cohu.com https://www.cohu.com/ At Cohu, we deliver leading-edge solutions to enable a smarter, safer, and more connected future. semiconductor equipment and services, and printed circuit board test. Thu, 08 Jan 2026 16:10:51 +0000 en-US hourly 1 /wp-content/uploads/2020/07/cropped-Cohu_Standard_favicon_32x32-32x32.png cohu.com https://www.cohu.com/ 32 32 Generative AI In Chip Manufacturing https://www.cohu.com/generative-ai-in-chip-manufacturing Thu, 08 Jan 2026 16:10:02 +0000 https://www.cohu.com/?p=48880 The post Generative AI In Chip Manufacturing appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white


Generative AI is a natural-language or text-based query, predicting patterns based on a massive set of data. While most of the attention has been focused on chatbots and copilots, it also can be used to identify small, transient aberrations in semiconductor manufacturing that are otherwise difficult to find. @Jon Herlocker, VP and General Manager of the Software Analytics Group at Cohu, Inc., talks with Semiconductor Engineering about how large language models can be used to improve yield and predict potential problems, how these systems work, and what to watch out for when using this technology.

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]]> Advanced Process Control In Semiconductor Manufacturing https://www.cohu.com/advanced-process-control-in-semiconductor-manufacturing Thu, 20 Nov 2025 19:54:46 +0000 https://www.cohu.com/?p=48292 The post Advanced Process Control In Semiconductor Manufacturing appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white


Advanced process control for semiconductor wafers is evolving in ways that can significantly improve yield and reduce scrap. As dimensions shrink, the need to improve manufacturing processes and reduce variability requires more precision. “Classic” APC was a step in the right direction, identifying problems in a process chamber, for example, and automating adjustments such as reducing electronic gases in a chamber or adjusting a wafer’s thickness due to critical dimension drift. That has been supplanted by machine learning-based APC, which adds virtual metrology to the picture. But there’s still a lot of data moving back and forth, which can result in multiple wafers being scrapped. Jon Herlocker, VP & General Manager of Tignis, A Cohu Analytics Solution, talks with Semiconductor Engineering about the next phase of APC, which includes intelligent process control, emulating the physics of an APC system, and optimizing it for multiple outcomes. This is part 5 of a 7-part series on AI in semiconductor manufacturing.

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]]> Virtual Metrology In Semiconductor Manufacturing https://www.cohu.com/tignis/virtual-metrology-in-semiconductor-manufacturing Wed, 24 Sep 2025 16:41:42 +0000 https://www.cohu.com/?p=47987 The post Virtual Metrology In Semiconductor Manufacturing appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white


Virtual metrology may never be 100% perfect because of the almost unlimited number of changes in a fab tools and the unique chip and wafer designs they’re being used to process. But there are places where virtual metrology does make sense. Jon Herlocker, VP & General Manager of Tignis, A Cohu Analytics Solution, talks with Semiconductor Engineering about why virtual metrology will never completely replace metrology tools in semiconductor fabs, where it has been used successfully, and what’s included and not included in data collected by sensors on those tools. This is the fourth video in a seven-part series on AI in semiconductor manufacturing.

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]]> Using AI For Fault Detection And Classification In Semiconductor Manufacturing https://www.cohu.com/tignis/using-ai-for-fault-detection-and-classification-in-semiconductor-manufacturing Fri, 05 Sep 2025 14:58:47 +0000 https://www.cohu.com/?p=47819 The post Using AI For Fault Detection And Classification In Semiconductor Manufacturing appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white


Classic fault detection and classification has some classic problems. It’s reactive, time-consuming to set up, and any product change involves significant man-hours. Even then, it still misses a lot of problems, which result in scrap. This is where machine learning can excel, because it can sift through huge amounts of data from thousands of sensors and find outliers and patterns. But there’s a big difference between supervised FDC and unsupervised. Jon Herlocker, VP & General Manager of Tignis, A Cohu Analytics Solution, talks with Semiconductor Engineering about the limitations of supervised FDC, which relies on previous faults, and why unsupervised FDC is necessary to reduce scrap and predict where failures will occur. [This is the third part in a seven-part series on AI in manufacturing.]

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]]> Machine Learning In Semiconductor Manufacturing https://www.cohu.com/tignis/machine-learning-in-semiconductor-manufacturing Fri, 22 Aug 2025 19:45:32 +0000 https://www.cohu.com/?p=47740 The post Machine Learning In Semiconductor Manufacturing appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Machine Learning In Semiconductor Manufacturing Video



Machine learning is a mathematical construct that is the foundation for nearly all the advancements in AI. ML came first, but it remains relevant even today. It can applied to semiconductor fab for such things as predictive maintenance of manufacturing equipment, rather than just maintenance on a schedule, which decreases downtime. But getting this right is harder than it sounds. Data needs to be relevant, clean, and organized in the right form. Jon Herlocker, VP & General Manager of Tignis, A Cohu Analytics Solution, talks with Semiconductor Engineering about what can go wrong in gathering and applying data, why so much compute horsepower is required, and where to harvest the data needed to keep it relevant. This is the second part in a seven-part series on AI in chip manufacturing.

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]]> AI, From A to Z https://www.cohu.com/tignis/ai-from-a-to-z Fri, 15 Aug 2025 19:47:39 +0000 https://www.cohu.com/?p=47747 The post AI, From A to Z appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

AI, From A to Z Video



First in a seven-part series: What’s the difference between AI, ML, DL, LLMs, and agentic AI? Is it truly revolutionary, or is it an evolutionary series of steps that have enabled machines to do much more than in the past? Jon Herlocker, VP & General Manager of Tignis, A Cohu Analytics Solution, talks with Semiconductor Engineering about the evolution of AI over nearly 70 years, the chain of innovation that has enabled things like ChatGPT and agentic AI, and how it applies to semiconductor manufacturing today and in the future.

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]]> Do More With Less in Semiconductor Manufacturing https://www.cohu.com/tignis/do-more-with-less-in-semiconductor-manufacturing Mon, 02 Dec 2024 16:23:31 +0000 https://www.cohu.com/?p=45273 The post Do More With Less in Semiconductor Manufacturing appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Do More With Less in Semiconductor Manufacturing


An orange background with four wooden blocks arranged vertically. Each one reads one word 'Do' 'More' 'With' 'Less' and there is a hand pushing the last block 'Less' out of alignment with the others

The recent resolution of labor disputes sheds light on a universal concern: the balance between automation and workforce dynamics. These situations mirror a challenge faced in semiconductor manufacturing—embracing AI without displacing the people driving the industry.



Moving Beyond Automation Fears

US port workers expressed concerns about automation technologies, such as autonomous cranes and robotics, potentially replacing their jobs. In semiconductor fabs, similar fears exist regarding AI and automation.

However, the shipping industry’s experience demonstrates that automation often reallocates jobs rather than eliminating them. This principle holds true for semiconductor fabs, where AI supports efficiency and safety, allowing workers to offload repetitive, low-value-added tasks.

AI as a Mechanism for Efficiency

AI isn’t about replacing jobs but enabling people to do more with less. AI-driven tools in fabs streamline production processes, predict equipment failures, and enhance product quality. For example, AI can manage repetitive yet critical tasks like anomaly detection faster and more accurately, freeing workers to focus on innovation and strategy.

Industries like automotive and e-commerce provide proof that automation hasn’t resulted in mass layoffs but created new roles in system management, data analysis, and advanced troubleshooting.

Upskilling: Preparing for the Future

To successfully integrate AI, workforce development is key. Semiconductor workers, like other industrial manufacturing employees, benefit from upskilling initiatives. For example:

  • Hands-on roles in AI implementation ensure humans remain integral to decision-making and innovation.
  • Career opportunities expand to include AI-driven data analysis, strategic oversight, and advanced engineering methods.
  • Increase the efficiency of fab workflows, as well as individual operators and technicians with AI-driven engineering insights

This transformation allows employees to contribute to higher-value tasks while leveraging AI for routine operations.

Safer, Smarter Workplaces

Automation can also improve workplace safety.

In semiconductor fabs, AI mitigates risks associated with hazardous tasks, reduces human error, and ensures consistency. This leads to safer conditions and a greater focus on intellectually engaging, rewarding work for employees.

The Path Forward

Automation supports people’s skills, amplifying what they can achieve. Semiconductor manufacturers have a unique opportunity to position AI as a partner in productivity. By embracing this evolution, fabs can meet growing demands for yield and quality, even amid constrained resources.

For example, Generative AI will help automate many engineering and technician tasks by enabling them to rapidly create queries leading to faster decision-making.

The lesson is clear: AI and automation, when implemented thoughtfully, enhance human potential. Workers and businesses thrive when technology is paired with a commitment to upskilling and innovation.

AI works alongside you, increasing your impact and efficiency. Let’s embrace the opportunity to do more with less and build a more efficient, rewarding future for the semiconductor industry.

#SmartManufacturing #SemiconductorManufacturing #DoMoreWithLess #AI #ML #WorkforceInnovation #PredictiveAnalytics #YieldManagement

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]]> Legacy Process Nodes are Critical to Many Industries https://www.cohu.com/tignis/legacy-process-nodes-are-critical-to-many-industries/ Thu, 05 Sep 2024 15:28:15 +0000 https://www.cohu.com/?p=45277 The post Legacy Process Nodes are Critical to Many Industries appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Legacy Process Nodes are Critical to Many Industries

A large square on a circuit board with a blue color overlay. Beams of light of varying heights are coming up from the center of the square

As the semiconductor industry continues to push the boundaries of innovation with advanced nodes, it is easy to overlook the critical role that ICs manufactured at legacy process nodes play in our everyday lives.



While the spotlight often shines on the leading-edge advancements of 5nm technology and below, it’s the mature nodes, those above 28nm and even above 130nm, that are the unsung chips that underpin a vast array of industries and applications. These mature node devices are indispensable, providing the backbone for electronic systems from automotive electronics to consumer products and industrial equipment.

Looking into the challenges and opportunities facing legacy semiconductor manufacturers, you will learn why maintaining robust production capabilities for these nodes is more important than ever.

The Automotive Industry: A Case Study in Dependence on Legacy Nodes

The automotive industry offers a stark reminder of the importance of legacy nodes. During the COVID-19 pandemic, the world witnessed a dramatic slowdown in vehicle production due to a shortage of semiconductors. Notably, it wasn’t the most advanced chips that were the primary issue, but the mature node devices that were essential for basic automotive functions such as steering, braking and engine control.

The situation became so dire that some automakers were forced to halt production lines resulting in more than 600,000 fewer vehicles produced in Q1 2021 according to HIS Markit. This crisis highlighted the fragility of today’s global supply chains and underscored the critical need for reliable access to legacy semiconductors. As vehicles become increasingly electrified, the demand for legacy chips (in addition to advanced ICs) will only grow, cementing their importance even more.

Beyond Autos: Everyday Essentials Powered by Legacy Nodes

While the automotive sector is a very high-profile example, semiconductors manufactured at mature process nodes are essential across many other industries as well. Consider the everyday items that we often take for granted: televisions, refrigerators, coffee machines, and Wi-Fi routers. These products all rely on mature semiconductor process technology. Unlike their advanced counterparts, which are typically focused on high-performance computing and specialized applications, legacy nodes offer the perfect balance of performance, cost, and reliability for mass-market high-volume products.

Their well-established manufacturing processes result in higher yields and lower defect rates, translating into cost-effective products for consumers, and predictable profitability for manufacturers. For these reasons, the demand for legacy nodes remains strong.

Industrial and Military Applications

Legacy nodes are also critical in industrial and military applications where reliability and durability are paramount. Industrial control systems, used in manufacturing equipment and process automation, rely on mature node ICs to ensure stable and uninterrupted operations. The ability to perform consistently in harsh environments makes these chips ideal for such applications.

In the military sector, legacy semiconductors are used in avionics, communication systems, radar, and missile guidance systems. These applications require chips that can withstand extreme conditions and provide long-term reliability, traits that are hallmarks of mature node process technology.

The Pandemic’s Legacy Chip Shortage: A Wake-Up Call

The COVID-19 pandemic served as a stark reminder of American (and global) dependency on legacy semiconductors. According to the U.S. Department of Commerce, firms faced their most acute shortages in chips at the 40nm node or larger. This shortage was a result of disrupted supply chains and a surging demand for consumer electronics and work-from-home devices, which further stressed production capacity for legacy chips. As consumers found out, the semiconductor industry cannot simply add more production capacity, it takes years to bring additional manufacturing capacity online.

This situation highlighted the critical need to enhance domestic manufacturing capabilities for both legacy and advanced semiconductors. The U.S. automotive and electronics industry’s reliance on these chips underscores the economic and strategic importance of maintaining robust legacy (and advanced) manufacturing capabilities.

The Path Forward for Legacy Manufacturers

For legacy semiconductor manufacturers, the path forward requires a delicate balance act between maintaining and upgrading existing fabs and investing in new production capabilities. Many legacy fabs are now over two decades old with equally aged manufacturing equipment and most likely with a significant percentage of its workforce nearing retirement. AI/ML can provide legacy fab managers with a two-pronged approach to these challenges: Improving fab profitability through higher OEE by leveraging all the data generated and collected across the fab to identify critical process and maintenance issues before they negatively impact manufacturing. The second benefit of AI/ML is to preserve the institutional and tribal process knowledge in your subject matter experts and democratize it across your entire manufacturing workforce.

For semiconductor companies building new fabs to increase capacity, the capital outlay is enormous, and it is vital to have those fabs reach high-volume production as soon as possible. AI/ML can help here as well, by leveraging the optimized process and equipment maintenance knowledge that was captured by the machine learning models from your existing fabs and using that knowledge to accelerate the yield ramp in your new fab.

Legacy process nodes are the unsung heroes of the semiconductor industry. Their critical role in powering a wide range of applications, from automotive and consumer electronics to industrial and military systems, cannot be overstated. As we continue to navigate the post-pandemic world, the importance of maintaining strong production capabilities for these mature nodes is more evident than ever.

For a deeper dive into the significance of legacy nodes and their role in the semiconductor industry, I encourage you to read the comprehensive SemiEngineering article that inspired this blog. Understanding the nuances and complexities of legacy semiconductor manufacturing will help us appreciate the vital role these technologies play in our modern world.

Read the full SemiEngineering article https://lnkd.in/e7vsUT4G. Stay informed and stay ahead in the ever-evolving world of semiconductors.

#Semiconductor #AI #ML #Innovation #Tignis #LegacyNodes #AutomotiveIndustry #TechInnovation #ConsumerElectronics

References:

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]]> Why Every Fab Should Be Using AI https://www.cohu.com/tignis/why-every-fab-should-be-using-ai Wed, 05 Jun 2024 18:40:12 +0000 https://www.cohu.com/?p=45466 The post Why Every Fab Should Be Using AI appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Why Every Fab Should Be Using AI

Man standing at a podium speaking with a sign to the right of him that says

At CS Mantech 2024, Charlie Parker, Sr. Machine Learning Engineer at Tignis presented on “Why Every Fab Should Be Using AI”.

If you missed his presentation, you can watch it below.


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]]> Navigating the Talent Crunch https://www.cohu.com/tignis/navigating-the-talent-crunch Mon, 06 May 2024 19:40:24 +0000 https://www.cohu.com/?p=45503 The post Navigating the Talent Crunch appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Navigating the Talent Crunch: AI Solutions for a Thriving Semiconductor Manufacturing Sector

Graphic illustration of a computer ship with a blue background and 'AI' in the center of the chip

The CHIPS and Science Act is a historic piece of legislation passed by the US government in 2022 aimed at regaining American leadership in semiconductor manufacturing. Supported by an unprecedented $52 billion in federal funding, this investment will also address supply chain vulnerabilities and national security concerns that were made glaringly public by the COVID epidemic.



In addition to revitalizing our chip manufacturing prowess and capacity, the CHIPS Act will also drive us to address another vital necessity —the need for a strong talent strategy. Beyond the funding of many new fabs, the Act will create demand for thousands of technical jobs needed to operate these fabs, talent that is in very short supply based on the projected growth rate of the semiconductor industry. America and the semiconductor industry will need to focus on establishing a much larger pool of trained workers to staff all the new fabs that will come online through the end of the decade.

The New Reality: A Talent Strategy for Tomorrow

In today’s high-tech world, creating jobs alone is no longer adequate. For the industry to thrive, a methodical approach to developing and retaining a skilled workforce capable of managing the complexities of modern semiconductor manufacturing is needed.

In the past, the assumption was that there would be an adequate supply of individuals possessing the required abilities to fill open positions. However, the semiconductor industry today is not a market segment that is actively sought after by high school or even college graduates. Combined with an aging workforce where significant numbers of workers will be retiring in a few years, it makes the need for trained technicians even more pressing for semiconductor manufacturers.

We need strategies that not only focus on training new workers but also on continuously enhancing the skills of existing employees to keep pace with the experienced staff expected to leave the workforce through the end of the decade. We need to look beyond just training new employees but also enabling existing technical staff to operate more efficiently and retain institutional and tribal knowledge before it disappears.

Building More Than Just Semiconductors: Building AI Assets That Increase in Value

In the face of this growing need for skilled labor in the semiconductor industry, technological innovations such as AI and machine learning are stepping in to bridge this gap. Companies like Tignis are at the forefront of this transformation, developing AI-powered process control solutions to significantly enhance the efficiency and precision of semiconductor manufacturing.

Tignis leverages advanced AI algorithms to monitor and optimize the complex processes involved in semiconductor manufacturing. These AI systems can predict and prevent potential issues before they occur, reduce waste, and ensure that tool availability is maximized. By automating and optimizing these critical goals, Tignis not only increases the yield of semiconductor production but also frees up human workers to be reallocated on more strategic, creative tasks that require human insight.

In today’s paradigm, manufacturing knowledge is captured, learned, and retained by expert individuals. Typically, semiconductor process engineers are taught the theoretical levers and environmental factors that affect their process, but at the same time they also need to learn the company-specific subtleties of their fab, tools, and products that make their process recipes efficient and dependable. But as paradigms shift and experts retire, critical institutional knowledge can be difficult to retain. AI is a highly valuable mechanism that does more than just learn the theoretical physics of a process, it also captures the nuances of that process over time in human-readable code. This AI code then becomes a persistent knowledge database for future engineers, democratizing the tribal knowledge that was once siloed in specific individuals.

Expert Insight

The integration of AI and automation into the semiconductor industry is often met with apprehension, with concerns about job displacement prevalent among the workforce.

David Park, VP of Marketing at Tignis has a more optimistic viewpoint in these areas saying, “AI and automation are not just about making processes faster or more cost-effective; they are about fundamentally transforming what a job entails. They enable us to rethink how and where we deploy human creativity and skills.”

This insight is crucial in shifting the narrative around AI from one of threat to one of opportunity. Park’s perspective highlights that AI and automation do not merely replace human labor but rather redefine it. They free human workers from mundane and repetitive tasks, allowing them to focus on more complex, strategic activities that machines are not equipped to manage.

In the context of ongoing labor shortages in the tech industry, AI and automation present a viable solution. They compensate for the lack of available human workers and help ensure that production does not stall due to workforce constraints. More importantly, they create an environment where all available human talent is used more effectively, maximizing the output and innovation potential of each employee. In this light, AI and automation are essential tools in the evolution of the workforce. They are not just adapting the industry to modern challenges but are also setting the foundation for future growth and development.

Turning the Tide with AI and Automation

The U.S. semiconductor manufacturing industry is currently facing a significant talent crunch, a challenge that is being addressed through the strategic integration of AI and machine-learning. These technologies are fundamentally revolutionizing the landscape of manufacturing, learning, and future growth.

But time is of the essence. AI can only learn from what it has seen in the past. Companies that wait to implement an AI strategy are losing valuable learning cycles and will be left behind by those that have already put AI strategies into place.

Tignis is at the forefront of this transformative journey. With a laser-focused commitment to the semiconductor industry, Tignis is not just responding to industry trends but actively shaping the future of semiconductor manufacturing. By prioritizing the development and implementation of AI and machine-learning, Tignis is envisioning a workforce that is quick, responsive, and leverages the knowledge that has been aggregated over decades of successful high-volume manufacturing.

References:

Howard, K. (2024, March 25). Chip market in the US: Influence of the CHIPS Act in GovCon. GovCon Wire. https://www.govconwire.com/articles/chip-market-in-us-chips-act-govcon

Morra, J. (2023, August 9). U.S. semiconductor workforce shortage reaching critical stage. Electronic Design. https://www.electronicdesign.com/technologies/embedded/article/21270688/electronic-design-us-semiconductor-workforce-shortage-reaching-critical-stage

House, W. (2023, February 3). FACT SHEET: CHIPS and Science Act will lower costs, create jobs, strengthen supply chains, and counter China. The White House.

Collins, B. (2024, February 19). US considering more than $10 billion in subsidies for Intel as part of CHIPS act to secure domestic semiconductor… TechRadar. https://www.techradar.com/pro/us-considering-more-than-dollar10-billion-in-subsidies-for-intel-as-part-of-chips-act-to-secure-domestic-semiconductor-manufacturing

Semiconductors and Artificial Intelligence – IEEE IRDSTM. (n.d.). https://irds.ieee.org/topics/semiconductors-and-artificial-intelligence#:~:text=AI%20demands%20will%20have%20lasting%20impacts%20on%20semiconductor%20design%20and%20production

Allan, L. (2024, April 4). AI takes aim at chip industry workforce training. Semiconductor Engineering. https://semiengineering.com/ai-automation-to-help-train-workforce-preserve-legacy-knowledge-optimize-processes

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]]> A Blueprint for Semiconductor Manufacturing Success with AI/ML Adoption https://www.cohu.com/tignis/a-blueprint-for-semiconductor-manufacturing-success-with-ai/ml-adoption Mon, 22 Apr 2024 18:30:52 +0000 https://www.cohu.com/?p=45461 The post A Blueprint for Semiconductor Manufacturing Success with AI/ML Adoption appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

A Blueprint for Semiconductor Manufacturing Success with AI/ML Adoption

Graphic of a semiconductor ship with a frame of the chip hovering above the main chip components in a blue background

In semiconductor manufacturing, the integration of AI and ML (machine learning) is not just a passing trend; it is a seminal shift that is already enhancing many facets of high-volume manufacturing (HVM). The integration of these technologies is driving enhanced operational efficiency, improved product quality, and reduced maintenance costs. Let’s explore the specific areas where these technologies are making an impact today.



Process Optimization: Machine learning models excel at automating and optimizing semiconductor manufacturing processes. By analyzing process and equipment data, ML algorithms can identify subtle and complex issues that traditional methods cannot recognize. The rapid troubleshooting and root-cause-analysis capabilities of AI/ML solutions enable process engineers to proactively address manufacturing issues, driving improved product throughput and lower cost of goods sold (COGS).  This is especially beneficial in periods of high semiconductor demand when greater equipment availability has a direct and positive impact on product revenue.

Intelligent Maintenance: Equipment downtime is a necessary evil in semiconductor manufacturing. Tools need to be well-maintained in order for them to properly manufacture devices that inherently have tight manufacturing tolerances. Performing too much maintenance is expensive and reduces equipment availability. Insufficient maintenance (e.g. run to fail) can be equally expensive if it results in “long term down” situations in addition to potentially scrapping the wafers in process when a tool goes down. AI/ML delivers intelligent maintenance, identifying equipment failures before they occur, enabling equipment engineers to leverage scheduled downtime to include additional maintenance tasks that can eliminate unplanned and costly maintenance activities.

Equipment Inventory Management: Legacy semiconductor manufacturers have additional challenges because many of the tools used in their fabs can be decades old. Maintaining a proper supply of critical replacement parts is essential to maintain high-volume manufacturing, especially for parts with limited availability. Even for companies that choose “run to fail” manufacturing practices, AI/ML can provide clear visibility into the need for future replacement parts, enabling equipment support teams to be ready to address any equipment down situation with minimal impact on production throughput.

Quality Control: In any manufacturing environment, process drift has always been a challenge for process engineers. Even the best designed processes will experience drift over time resulting in process variability than can affect quality.  AI/ML models are being used today to implement “run to run” process control that can actively manage process drift. Not only can process variation be reduced by 50% or more, chamber availability can also be increased by 1-3% providing additional capacity from the same tool fleet.

Cost Reduction: One of the most significant impacts of AI and ML in semiconductor manufacturing is overall cost reduction. Every one of the aforementioned areas has a direct impact on cost reduction: Engineering efficiency, smarter maintenance and inventory management, and improved product quality all contribute to lower COGS for semiconductor manufacturers.

Challenges and Future Directions: Despite the clear advantages, the integration of AI/ML into existing semiconductor manufacturing processes is not without challenges. High-quality data is the lifeblood of AI, and ensuring the timely availability of high-fidelity equipment and process data is essential to the success of any AI/ML implementation. Process engineering and equipment automation teams also need to be open to change, because AI/ML is much more than just “doing the same thing, but faster”. AI/ML is already changing the manufacturing paradigm that has existed for decades, and will continue to do so. Those that embrace change will be the winners in the next era of semiconductor manufacturing.

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The future of AI/ML is bright. As these technologies continue to advance, they will continue to unlock untapped potential within the semiconductor industry. In fact, other than fab personnel, AI/ML is the only appreciating asset in your fab.  We can expect to see further improvements in efficiency, reductions in production costs, and the development of even more sophisticated chips primarily due to the benefits of AI/ML.

For Tignis, these advancements are particularly pertinent. Tignis is well-positioned to help semiconductor manufacturers and equipment OEMs to achieve new levels of automation and process control, ensuring that these companies remain at the leading edge of innovation.

AI/ML is not just supporting the semiconductor industry, it is reshaping it. As an industry, we are on the cusp of a new era, with AI/ML acting as the catalysts for innovation.

Sources:

McKinsey & Company. (2024, March 13). Insights on Artificial Intelligence. https://www.mckinsey.com/capabilities/quantumblack/our-insights

McKinsey & Company. (2021, April 2). Scaling AI in the sector that enables it: Lessons for semiconductor-device makers. https://www.mckinsey.com/industries/semiconductors/our-insights/scaling-ai-in-the-sector-that-enables-it-lessons-for-semiconductor-device-makers

Intel Newsroom. (2024, February 21). Intel Launches World’s First Systems Foundry Designed for the AI Era. https://newsroom.intel.com/intel-foundry/foundry-news-roadmaps-updates

Intel Newsroom. (2023, November 3). Intel Labs Introduces AI Diffusion Model, Generates 360-Degree Images. https://newsroom.intel.com/artificial-intelligence/intel-labs-introduces-ai-diffusion-model-generates-360-degree-images-from-text-prompts

TechOvedas. (2023, August 7). How AI is Revolutionizing the Semiconductor Industry. https://techovedas.com/how-ai-is-revolutionizing-the-semiconductor-industry/

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]]> Transforming Semiconductor Manufacturing with AI and ML https://www.cohu.com/tignis/transforming-semiconductor-manufacturing-how-ai-and-ml Mon, 30 Oct 2023 15:49:13 +0000 https://www.cohu.com/?p=45454 The post Transforming Semiconductor Manufacturing with AI and ML appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Transforming Semiconductor Manufacturing: How AI and ML Boost Productivity and Beat the Skill Shortage

In the fast-paced world of semiconductor manufacturing, where innovation and efficiency are essential, there is a serious challenge- the persistent skilled labor shortage. As evident by billboards looking for workers along major highways, this shortage is not just a concern but a pressing reality.



Semiconductor manufacturers in the United States face a multifaceted problem—tightened immigration policies limiting access to skilled and unskilled workers, and a lack of graduates in STEM fields, critical for the industry’s growth. In Oregon, where Analog Devices, Intel and Microchip have fabs, the semiconductor sector expects to add more than 6,000 jobs over the next few years as these manufacturers expand.(1)

The demand for semiconductor manufacturing expertise has never been greater, and this is where Artificial Intelligence (AI) and Machine Learning (ML) become very useful. Not by replacing people but by helping the teams you have become more efficient.

Bridging the Skills Gap

The talent shortfall within the semiconductor industry is a profound issue that affects both process engineers and management alike. AI and ML have emerged as powerful tools to address this predicament, and here’s how they do it:

  1. Swift Onboarding: The semiconductor industry demands specialized knowledge and skills. AI and ML solutions can expedite the onboarding process for new employees. Interactive simulations, comprehensive training modules, and personalized learning experiences allow inexperienced workers to grasp complex manufacturing processes and equipment more efficiently. AI-driven training modules reduce the learning curve and ensure that newcomers become proficient swiftly.
  2. Codifying Institutional Knowledge: Experienced engineers and managers play a pivotal role in the industry’s success. However, as many of them approach retirement or move to other companies, there’s a genuine concern that their institutional knowledge may be lost. AI can preserve this wisdom by codifying and storing it in digital repositories, making it accessible to all. New hires can benefit from the collective wisdom of their predecessors, ensuring a smoother transition and enhanced performance.
  3. Predictive Maintenance and TroubleshootingOne of the industry’s primary challenges is the efficient maintenance of highly complex equipment. AI/ML-powered predictive maintenance systems can forecast equipment failures and suggest maintenance schedules. This not only reduces downtime but also enhances overall efficiency. Furthermore, these systems can swiftly identify and troubleshoot problems, allowing engineers to tackle issues with precision and agility.
  4. Enhanced ProductivityAI/ML-powered automation takes care of routine and repetitive tasks, freeing up engineers and management to focus on more creative and complex challenges. As a result, employees can apply their expertise where it’s needed the most, driving productivity and innovation.
  5. Problem-Solving at Speed: The semiconductor manufacturing process relies heavily on the functionality of complex machinery. AI and ML are adept at analyzing vast datasets and identifying intricate problems quickly. This accelerates the troubleshooting process and ensures that production processes continue without significant disruption.

AI and ML: A Competitive Edge

 In the semiconductor industry, where competition is fierce, embracing AI and ML is not an option but a necessity. Leading companies have already recognized the potential of these technologies in driving efficiency and innovation, setting a precedent for the rest of the industry.

By leveraging AI and ML, semiconductor manufacturers in the United States can transform their operations, maximize their existing talent pool, and maintain a competitive edge in the global market. As the industry confronts the challenges of recruitment, retention, and skills development, these technologies offer a lifeline, ensuring that progress and productivity remain unwavering.

Embrace the Future

AI and ML are not just tools; they are our partners in progress and are the keys to addressing the skilled labor shortage. By integrating them into our operations, we do more than secure the future of our industry; we bolster our professional growth and elevate our collective capabilities. Industry leaders have set the precedent by adopting AI/ML, and we can all leverage the power of these transformative technologies.

In the evolving semiconductor landscape, the union of human expertise and AI intelligence is our pathway to sustained productivity and innovation. By embracing AI and ML, we secure our role as leaders in a dynamic, competitive, and fast-evolving industry. It is not merely an option; it is the means to maintain our status as a powerhouse of progress and ingenuity.

Resources

  1. “Oregon seeks to jump start semiconductor workforce.” OregonLive. https://www.oregonlive.com/silicon-forest/2023/10/oregon-seeks-to-jump-start-semiconductor-workforce-with-intensive-two-week-program.html

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]]> Optimum Energy and Tignis Enter Exclusivity Agreement https://www.cohu.com/tignis/optimum-energy-and-tignis-enter-into-a-worldwide-exclusivity-agreement-to-advance-efficiency-for-hvac-solutions Thu, 06 Jul 2023 15:06:03 +0000 https://www.cohu.com/?p=45420 The post Optimum Energy and Tignis Enter Exclusivity Agreement appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Optimum Energy and Tignis Enter into a Worldwide Exclusivity Agreement to Advance Efficiency for HVAC Solutions

PAICe Monitor’s predictive analytics enhances Optimum’s ability to reduce energy costs and carbon emissions for its customers across semiconductor fabs, pharmaceutical manufacturing, hospitals, universities, and other smart buildings



SEATTLE, July 6, 2023  – Optimum Energy (“Optimum”), a leading supplier of energy optimization solutions, and Tignis, Inc. (“Tignis”), a pioneer in AI/ML solutions for advanced process control, today announced a new multi-year worldwide exclusive agreement to provide a closed loop HVAC solution for smart buildings worldwide, including for semiconductor fabs, pharmaceutical manufacturers, hospitals, and universities, among others. PAICe Monitor from Tignis will be embedded into Optimum’s control software solution to rapidly identify operational anomalies that negatively impact energy usage and carbon emissions in built environments worldwide. Optimum customers will benefit from additional operating cost savings and improved sustainability for their ongoing operations.

PAICe Monitor is a production-proven, AI-powered analytics solution that ingests existing operational data and learns the nuances of a customer’s process to automatically detect anomalies that can lead to costly operational variances in their built environment. In parallel, PAICe Monitor accelerates root cause analysis by identifying the most highly correlated interactions of system inputs and environmental variables, enabling support teams to proactively address issues that impact operational excellence.

Optimum’s state-of-the-art control software provides continuous system-level optimization of water-cooled chilled water plants, air handling units, boiler plants, among other energy system equipment, without requiring operator intervention. The software acts as a seamless intelligent supervisor for a customer’s HVAC building automation system. Regardless of building load or ambient conditions, Optimum’s technology automatically delivers the most efficient operation of an entire energy system resulting in increased equipment life, and energy and cost savings of up to 50%.

“Tignis is hyper-focused on leveraging AI to autonomously optimize process control and improve operational efficiency in advanced manufacturing environments,” said Jon Herlocker, CEO and Co-Founder of Tignis. “We are delighted to partner with Optimum to leverage our AI-powered process control solutions and we look forward to helping them continue to expand that capability to all of their global customers.”

“We are pleased to enter into this multi-year engagement with Tignis,” said Larry Stapleton, President of Optimum Energy. “Tignis is a leader in their field, and their technology is enhancing our ability to achieve double-digit improvement in energy savings and reliability for our customers. We are looking forward to expanding our use of Tignis technology across our portfolio of customers.”

About Optimum Energy

Since 2005, Optimum Energy’s patented software and engineering expertise has helped customers reduce energy use in heating and cooling systems, the largest consumer of energy in buildings, by up to 50%. Our solutions combine technologically advanced HVAC optimization software with powerful cloud-based data analytics and world-class engineering support. It’s a proven, measurable approach that verifiably reduces energy and water usage, while also resulting in significantly improved operations. From dramatic energy reductions to improved business continuity, from better asset management capabilities to powerful tools and engineering support that augment your existing facilities staff capabilities, Optimum Energy has the complete solution for maximizing your HVAC system’s operational efficiency.

About Tignis

Tignis is a leader in AI-powered process control solutions to enable next generation manufacturing processes, increase manufacturing output, and improve manufacturing sustainability. The company’s products democratize AI and machine-learning, enabling process and operations engineers to design, test and achieve extraordinary AI/ML results in manufacturing environments. Tignis is headquartered in Seattle, WA and the company’s technology is deployed in hundreds of facilities worldwide.

Contacts

Gaige Baisch
Marketing Manager, Optimum Energy
gaige.baisch@optimumenergyco.com
206-582-3192

David Park
VP of Marketing, Tignis
david.park@tignis.com
503-913-4793

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]]> Tignis Joins MITRE Engenuity’s Semiconductor Alliance https://www.cohu.com/tignis/joins-mitre-engenuitys-semiconductor-alliance-to-accelerate-next-generation-technological-advancements-across-the-u.s.-semiconductor-industry Thu, 02 Feb 2023 15:28:09 +0000 https://www.cohu.com/?p=45400 The post Tignis Joins MITRE Engenuity’s Semiconductor Alliance appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis Joins MITRE Engenuity’s Semiconductor Alliance to Accelerate Next-Generation Technological Advancements Across the U.S. Semiconductor Industry

Tech Foundation MITRE Engenuity Convenes Experts, Organizations, and Investors to Address American Semiconductor Innovation, Driving Generational Impact for Public Good



SEATTLE, Wash., February 2, 2023 – Tignis, a technology innovator in AI process control for semiconductor manufacturing, today announced it has joined MITRE Engenuity’s Semiconductor Alliance. In alignment with the coalition’s focus on collaboratively defining breakthrough semiconductor industry advancements critical to a healthy economy and national security, Tignis brings advanced expertise in artificial intelligence, machine learning, physics and data science.

“We are proud to be part of MITRE Engenuity’s Semiconductor Alliance, working together to define and accelerate our nation’s position of leadership across the semiconductor industry,” said Jon Herlocker, president and CEO of Tignis. “MITRE Engenuity brings together a distinguished coalition of innovators throughout every aspect of the supply chain, collaboratively identifying the best pathways and investments for semiconductor technology innovations and manufacturing leadership. We will all benefit from the resulting shared vision and U.S. preeminence throughout this critical industry.”

“We’re thrilled to have Tignis join our collaboration of industry-leading companies from across the United States that collectively account for over 50% of the industry’s R&D share,” said Raj Jammy, chief technologist, MITRE Engenuity, and executive director of the Semiconductor Alliance. “We’re working together to grow the semiconductor industry on U.S. soil and regain domestic leadership in the industries of today and the future.”

In alignment with the esteemed MITRE Engenuity Semiconductor Alliance members, Tignis brings unique expertise for driving next-generation semiconductor manufacturing advancements. Through its PAICe product suite, Tignis provides the precise insights of physics with the most advanced AI and ML data science to give semiconductor equipment manufacturers, wafer fabs, and components and materials suppliers unprecedented automation and process control. The company’s unique physics-driven AI models enable engineers and data scientists to understand how their equipment will operate in modes never previously observed. Tignis delivers the ability to know what equipment will do, select the best states of operation, and continually optimize processes.

About MITRE Engenuity

MITRE Engenuity, a subsidiary of MITRE, is a tech foundation for public good. MITRE’s mission-driven teams are dedicated to solving problems for a safer world. Through the organization’s public-private partnerships and federally funded R&D centers, MITRE Engenuity works across government and in partnership with industry to tackle challenges to the safety, stability, and well-being of our nation. MITRE Engenuity brings MITRE’s deep technical know-how and systems thinking to the private sector to solve complex challenges that government alone cannot solve. MITRE Engenuity catalyzes the collective R&D strength of the broader U.S. federal government, academia, and private sector to tackle national and global challenges.

About Tignis

Tignis specializes in AI-powered process control with a physics and engineering foundation. Headquartered in Seattle, the company develops and sells innovative software solutions that use AI and machine learning to enable next-generation manufacturing processes. Tignis gives semiconductor equipment manufacturers, wafer fabs, and components and materials suppliers unprecedented automation and process control—increasing manufacturing yield, decreasing process downtime, and reducing costs. Working with the world’s top semiconductor equipment manufacturers and fabricators, Tignis also has a proven track record of empowering other large-scale mission-critical industries. Tignis solutions are deployed in hundreds of facilities worldwide.

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]]> Tignis Internship Q&A with Duke Technology Scholar Anju Sekar https://www.cohu.com/tignis/internship-with-duke-technology-scholar Tue, 01 Nov 2022 13:53:28 +0000 https://www.cohu.com/?p=45372 The post Tignis Internship Q&A with Duke Technology Scholar Anju Sekar appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis Internship Q&A with Duke Technology Scholar Anju Sekar

SEATTLE, Wash., November 1, 2022 – The Duke Technology Scholars Program (DTech) is a comprehensive effort to empower the next generation of diverse leaders who will bring increased innovation to the tech industry. The program centers around the idea that community, mentorship and hands-on experience make the difference in recruiting and retaining under-represented people in technology fields. Through DTech, undergraduate students and alumni find the support, inspiration, community, and mentorship needed to succeed in technology fields, and then pay it forward by investing in others.

According to Amy Arnold, Executive Director of DTech, the program includes more than 450 students studying computer science and/or engineering at Duke.  In addition to students, they have an equal number of alumni working in software engineering, product management, and data science roles.  Seattle has become a destination of choice for many of these talented young women. Last summer, 75 of them worked at Seattle tech companies either as interns or in full-time positions.  Anju Sekar joined Tignis as a summer intern.

Please tell us about yourself.

My name is Anju Sekar and I’m from Phoenix, Arizona.  I’m a proud member of the DTech program and currently a junior at Duke University majoring in Computer Science with a minor in Statistics.  My academic passions include technical product management, data science, edtech, ethical tech, and femtech. Outside of technology, I’m also interested in strategy and business analytics, education, applied math, behavioral economics, public policy, and child policy research.

Tell us about your background in engineering/computer science. What is your major and why did you pick it?

Coming into college I didn’t have much experience in computer science but after taking an introductory course my first semester, I decided this was the right fit for my future career path.  Once I committed to this major, I searched out organizations and clubs to join that would open me to more computer science experience and learning. One such club was DAML (Duke Applied Machine Learning). Through DAML, I explored the different tracks available including software engineering, data science, and product management. I ended up finding interest in all three, especially product management, which is a professional track I plan to pursue in the future.

Can you tell us a bit about the Duke DTech program, and how you got involved?

DTech is an organization at Duke that helps women-identifying individuals find summer internships. They provide a variety of resources and opportunities which include resume workshops, coffee chats with recruiters, interview prep, career fair prep, and much more. I joined DTech as a member my freshman year and took on a leadership role this past summer as the co-lead/product manager of the PrepTogether program. PrepTogether is a virtual summer program created by DTech that matches you with a group and provides you weekly resources to teach you how to answer specific interview questions for the professional track that you decide on.

What made you want to intern at Tignis?  

It was the innovative technology, company culture and match to my future career goals that made me choose Tignis for my summer internship.  When I was researching the company and what they did, I saw a lot of different projects I already had interest in and discovered new aspects of the project from which I knew I could learn and gain experience.

One example is Tignis’ PAICe Builder, which collects data and then uses this data to improve efficiency and speed for different pieces of equipment and software. This was similar to a project I did for the Duke Office of Information Technology that I found interesting and therefore I saw the opportunity to contribute in a useful manner. I knew this prior experience and interest would save me time getting up to speed and allow me to focus on in-depth learning to attain my ultimate goal for the internship which was to be able to dive right in in a more hands-on way.

What did you learn during your time at Tignis? 

On the product management side I learned how to write product specs, requirements docs, and how to make revisions based on multiple rounds of feedback. On the design and implementation side I learned how to make API specs, take advantage of Redux, and create the user interface flow.

More than all of this, however, I learned about how a company should value their employees as humans first, developers second. While working at Tignis, I discovered how much they truly value mental health and well-being. Whether it was Workout Wednesday, Toning Tuesday, time spent doing virtual social activities, Fifth Friday, Lunch and Learn, or farewell presentations; I always knew Tignis would support me in this aspect and showed me what I should prioritize in the future when deciding on a position and employer.

What do you consider your biggest accomplishment?

My biggest accomplishment to date is definitely what I created during my time at Tignis this summer. I got the opportunity to build a historical alerts data summary panel that displays information about the wafers, which was found to be beneficial and useful to the end users. I was able to work on all parts of the project from the product idea and feature design, to the user interface, implementation and a final presentation to the team.

Where do you see yourself in 10 years, and how do you think this experience will help you get there?

In 10 years, I’ll be 30 and see myself working as an upper level product manager at a company of any size. Hopefully, I’ll have also gotten my MBA by then. I want to work on a product that is revolutionary as well as something unique to the market. I want this to be something that will both benefit and serve the greater community as well as make a difference in the world. My hope is to be able to see the impact of the product in a tangible manner. Additionally, I want to have created something (startup or otherwise) that fulfills my own personal passions.  My ultimate dream one day is to be the CEO of my own startup company.

A closing word from Tignis’ UI/UX Manager, Brady Mauermann-Peterson 

When Anju joined Tignis for the summer, she jumped straight into a whirlwind of activity  preparation for beta, technology changes, design changes, and more.  She didn’t have experience with our technology, but did that stop her? Absolutely not! Before the internship had even begun, Anju was seeking out reference material on our tech stack which was the first sign that we found someone with a bright future. Anju consistently did well in her desire to take in the entire development process and to make something genuinely useful for our customers.  Over the course of the internship, I watched Anju seek out feedback and actively use that feedback to grow and improve. We have no doubt that she has the attitude and skill of a successful developer, and will be able to make her startup dreams come true!

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]]> Challenges of Time Series Data Analysis Semiconductor https://www.cohu.com/tignis/challenges-of-time-series-data-analysis-semiconductor/ Fri, 11 Mar 2022 19:38:06 +0000 https://www.cohu.com/?p=45328 The post Challenges of Time Series Data Analysis Semiconductor appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Challenges of Time Series Data Analysis Semiconductor

A semiconductor wafer sitting on a pedestal inside a machine with another wafer in the background

The semiconductor industry is rife with opportunities for machine learning, as well as atypical challenges for machine learning applications. One such challenge involves data that superficially appears to be in a time series, yet displays a number of distinct characteristics that prevent typical time-series analysis techniques.

Let’s use a very simplified film deposition recipe as an example. One can imagine a substrate is heated up to a process temperature from the base chamber temperature while the film material is also ramping up to temperature (step 1). Once both are heated, a shutter sequence is triggered and the film is deposited on the substrate for a fixed duration (step 2) until the shutter is closed, the film deposition ends, and the substrate and film material are cooled (step 3).


A line graph with Times ranging from 0-600 on the x axis and shutter, film temp, and substrate temp on the y axis. There are three separate lines in the graph and they are blue, yellow, and green

There are three sensors in this recipe, tracking the substrate temperature, film material temperature, and the shutter status (open or closed) over the three recipe steps. Nominally, these sensors are providing time-series data, but the data outside of the recipe duration is inconsequential when tracking a particular substrate.

This sample will have three time-series as features for any response that is chosen for quality control over the process. Working with these process-related time series in the semiconductor industry is fundamentally different from traditional time series analysis–there’s no reason to believe that each successive point in the data series depends on past values, and any forecasting in any supervised learning is usually for a response that is completely atemporal and outside of the process at hand. Comparing the traces that accompany each sample relies on “stacking” the data, rather than processing it in a continuous series.

Here are a few of the challenges that often accompany these types of datasets:

HIGH DIMENSIONAL DATA, LOW SAMPLE SIZE 

Without feature engineering, the dimensionality of these types of datasets can be extremely high. Typical processes in semiconductor manufacturing can involve a large number of sensors tracking different recipe parameters. These recipes can be extremely complex, and even in high-volume manufacturing the number of datapoints that can accompany each sample can be so high as to dwarf the overall number of samples under consideration.

Supervised machine learning in this domain can be difficult due to “the curse of dimensionality.” Overfitting a model to the data, or creating a model that performs well during training but cannot accurately perform with new data, is a very likely outcome in this regime. Unsupervised methods such as clustering can also be difficult, as the distance between samples can be hard to quantify in high-dimensional spaces.

AUTOMATED FEATURE ENGINEERING CAN BE DIFFICULT WITHOUT DOMAIN KNOWLEDGE

Reducing the number of features is an obvious solution to working with high-dimensional datasets, but semiconductor process datasets often have certain constraints that require technical expertise in the process.

Returning to the simplified film deposition example, there may be features in each trace that are obvious to a process engineer who works with the tool that may not be obvious to a data scientist. There may not be any reason to consider the ramp steps while the shutter is closed (steps 1 and 3), and the information in step 2 may be entirely sufficient in feature extraction. The duration of the deposition in step 2 is likely an important feature, perhaps more so than the overall duration of the recipe. The temperature overshoot from the substrate temperature ramp might be interesting to quantify as a feature, rather than just using the setpoint from the recipe. Rather than taking the film material temperature at face value, it may be more interesting (and interpretable) to attempt to extract a deposition rate as a function of time from the data.

There may be interesting opportunities to quantify and gauge the effect of physical phenomena in the discrepancy between the recipe setpoints and the anomalies that occur in real time. These may not be obvious without expertise in the subject matter. Domain knowledge can help to both reduce the number of features in a way that takes into account the physical aspects of the problem and increase the interpretability of the model.

LOW FEATURE VARIANCE WITHIN RECIPE GROUPS

In high-volume manufacturing, the same product will generally be produced by running the same recipe every time, with some changes in tool drift or calibration. In practice, there may be a large number of features present in the data that are known to have a large theoretical importance on the response, but are ultimately unchanging in the available dataset. In this case, modeling a process variable’s impact on the response can be limited to the impact of outliers on the dataset, or looking at anomalies in the dataset to identify failure modes present in the tool.

SUPERVISED MACHINE LEARNING CAN BE TRICKY OR MISLEADING WITHOUT A CLEAR IDEA OF THE PITFALLS

Many semiconductor processes have some quality metric that can be used to identify how well the process performed, but there are often unique challenges in gathering and identifying these performance metrics. For example, some firms may not track individual wafers throughout the process and rather rely on sampling from a lot identifier, causing any modeling to lose granular information about each wafer in the aggregation of the data over the lot. Alternatively, quality control for a process may be time intensive or expensive to perform (SEM, SIMS, etc.) and are therefore only performed intermittently, limiting the number of samples that can be used in an analysis.

Many of the performance metrics are spatially distributed across the wafer, in that they are measured at different surface points across the wafer. When using temporal data from the process time series, there is nothing intrinsic in the data that can identify variations in the spatial distribution of process incongruities. Information about process uniformity can be lost unless it is specifically accounted for.

Furthermore, trace datasets can be limited in scope to a single tool that is merely one of many in a complicated process, with a response that is measured after encountering multiple stages in a process for which little information may be available. In these cases, models risk overstating the impact of a single process on the overall product development, simply because they lack information about what happened to the wafer before and after the process for which there is information.

INCREASING THE ODDS OF A SUCCESSFUL MACHINE LEARNING ENGAGEMENT

When selecting suppliers, contractors, or data scientists as partners on semiconductor machine learning projects, make sure to cover your bases.  Ask them deep and specific questions on their experience in semiconductor and similar data cases.

  • Have they worked with semiconductor manufacturing processes in the past?
  • Are they familiar with non-continuous process data sets that may need to be divided and subdivided into steps?
  • Have they worked with extremely high dimensionality data sets?
  • Do they have domain or process specific knowledge that will allow them to augment model feature selection?

These are all important questions when selecting partners for machine learning in semiconductor manufacturing.

Tignis is a perfect fit when undertaking your next machine learning project. Regardless of the potential challenges, Tignis has ample experience working with this type of data. Tignis combines domain expertise of the underlying physical parameters of a problem with machine learning capabilities to identify the most promising directions and applications for the data available.

The post Challenges of Time Series Data Analysis Semiconductor appeared first on cohu.com.

]]> What is Digital Twin Query Language? https://www.cohu.com/tignis/what-is-dtql/ Wed, 19 Jan 2022 19:25:11 +0000 https://www.cohu.com/?p=45311 The post What is Digital Twin Query Language? appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

What is Digital Twin Query Language (DTQL)?

Tignis saw a gap in the way data is analyzed and who had the power to turn that data into meaningful insights. Sr. Machine Learning Engineer, Adam Ashenfelter discusses why Tignis developed a completely new programing language.



Line graph with five lines, blue, orange, purple, red, and green, with the dates on the x axis ranging from January 31 2021 to February 12 and 0-100 on the y axis.

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]]> Advanced Process Control Smart Manufacturing Conference https://www.cohu.com/tignis/advanced-process-control-smart-manufacturing-conference-2021-in-review/ Tue, 19 Oct 2021 12:10:14 +0000 https://www.cohu.com/?p=45710 The post Advanced Process Control Smart Manufacturing Conference appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Last week I attended the APCSM 2021 virtual conference where thought leaders came together to share how Artificial Intelligence and Machine Learning are helping to meet current challenges in the semiconductor and related industries. Various talks shared how new strategies in run-to-run process control, fault detection and classification, predictive analytics, and virtual metrology enable improvements in yield, quality, and manufacturing efficiency. A summary of some of our key takeaways is presented below.


Run-to-Run (R2R) Process Control 

Run-to-run process control is a strategy to modify run parameters using metrology feedback to maintain production specifications in face of process drift and disturbances. For example, a R2R controller could suggest modulating recipe parameters or modifying an overlay correction pattern for subsequent runs based on analysis of the error in previous runs. Established technology involves using a process model identified with design of experiments (DOE) to produce a linear model at the operating point, then modifying a constant term using an exponentially weighted moving average approach (EWMA). There is considerable promise in using a machine learning-based approach to enable robust R2R control in cases where linear+EWMA is inadequate. However, we observed talks where deep learning based R2R controllers failed to exceed the performance of the classic method. This demonstrates that ML based controllers must be carefully regularized and also specifically designed to aid in the cases where the classic approach fails: cases with inaccurate or changing process models or with high autocorrelation.

Fault Detection and Classification (FDC)

The process of timely fault detection (FD) and then understanding the type and cause of the fault or fault classification (FC) are core technologies required for maintaining good yield and process efficiency. The current sentiment is that although FD technology has already become quite mature, there is considerable opportunity in advancing FC systems to enable process engineers to be more efficient at fixing problems as they arise. Current FC strategies involve studying statistical process control charts, then comparing outliers with faults using univariate analysis. This strategy can be slow and tedious and also misses out on faults that occur due to non-linear relationships or complex multivariate interactions. Some presentations shared advances in multivariate FC techniques using machine learning (decision trees, PCA, SVMs, etc), using detailed analyses to give a hierarchy of most probable root causes for the fault. Key themes included using interpretable models to understand the origin for a fault and also using statistical methods to eliminate collinearity to return only the most relevant predictors. Another theme included using automatic trace segmentation to extract meaningful features from equipment time series data to use in FDC algorithms. Key challenges moving forward include making use of the time series data in FDC and designing FC systems that can identify both simple and complex root causes.

Predictive Analytics

A major industry trend is moving away from reactive FDC towards predictive analytics to prevent faults from occuring in the first place. Several talks shared examples of using ML to predict future behavior for use in failure prevention and preventive maintenance scheduling. One example showed that an ensemble model (an aggregate model composed of many simpler time series models) was able to quickly adapt to new behavior when deployed using on-line learning. Key challenges include using models that are robust enough to adapt to non-linear behavior without overfitting and giving false alarms, while making models lightweight enough to deploy on many different assets with efficient retraining.

Virtual Metrology

Another industry trend is using virtual metrology to reduce metrology costs and for earlier fault detection. Virtual metrology (VM) involves using a model to predict a metrology result in absence of the actual data, then using the VM prediction to take some action. A key theme was collaboration between data scientists and subject matter experts to identify relatively simple, interpretable models to use for VM. Important challenges in deploying VM solutions include effective MLOps (model monitoring and updating, etc.) with a lack of periodic collection of actual metrology results.

Summary

Although there is a considerable opportunity in leveraging AI in process control to unleash higher yields and more efficient processes in the semiconductor industry, there are practical challenges that must be overcome to realize the full potential. The presentation of these challenges validated the efforts of the Tignis team in developing our current technology suite. For example, our reinforcement learning process control (RLPC) has the ability to adapt the process model for more robust run-to-run control. Also, the surrogate modeling (SIM-AI) technology enables deployment of accurate machine learning models in cases where a large physical dataset is difficult to collect. Finally, our low-code digital twin query language (DTQL) empowers subject matter experts to develop effective predictive analytics and virtual metrology tools and deploy across many assets, with built in MLOps. Collectively, these tools have the capability to enable practitioners to overcome many of the aforementioned challenges.

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]]> How Tignis Digital Twins Power The Future of AI-Based Process Control https://www.cohu.com/tignis/how-tignis-digital-twins-power-the-future-of-ai-based-process-control/ Tue, 28 Sep 2021 18:01:59 +0000 https://www.cohu.com/?p=45289 The post How Tignis Digital Twins Power The Future of AI-Based Process Control appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

How Tignis Digital Twins Power The Future of AI-Based Process Control

Executive Summary

The Internet of Things and the Industrial Internet of Things continues to develop with advances in Artificial Intelligence and Machine Learning.  New solutions offer cost savings, efficiency gains and improved yield that were not possible before.  Startups like Tignis are leveraging these advances to optimize industrial operations and make Artificial Intelligence and Machine Learning available to almost any application. AI and ML, which have been widely deployed for consumer internet applications with great effect, will have to be completely reimagined for usability in the industrial world.  A new approach that adapts AI/ML to the world of physical sciences is required to enable solutions offering cost savings, efficiency gains and improved yields not previously possible. Tignis is pioneering these advances to optimize industrial operations and make Artificial Intelligence and Machine Learning available to almost any application.


ARTIFICIAL INTELLIGENCE AND MACHINE LEARNING TODAY

The benefits of big data analytics using Artificial Intelligence and Machine Learning (AI/ML) to the Internet economy cannot be understated. Today’s leading Internet companies have pushed the frontier of AI/ML as a foundational enabling technology to power their advertising revenues.  The monetization of the “attention economy” requires the use of AI/ML to aggregate and analyze massive data sets.  Similarly, large retailers use AI/ML to power their merchandizing strategies, personalized commerce, and their potential upsell/cross-sell opportunities (i.e., “if you like this, you will like that”).  This has largely been in the purely digital domain.

The world is in the early days of a major Great Leap Forward. AI/ML is moving from the “digital domain” for big data analytics into the “analog domain” for controlling real-world physical machines and complex systems built from those machines. We are on the verge of centralized computers using AI/ML to actively control machines at a massive scale. To enable this leap forward, investment in AI innovation has surged over the last 5 to 6 years. Over $50 Billion of venture funding has gone into AI/ML companies just in the last four quarters per CB insights.

There has been much written over the past half-decade about the Internet of Things (IoT) and Industrial Internet of Things (IIoT). A global race is underway to instrument the world with 10s of billions of new network-connected sensors and data collection probes. This tsunami of new data sources is laying the foundation for a not-too-distant future where computers using AI/ML will control and optimize the performance of highly complex large-scale industrial processes that make our daily lives possible.

Industries such as energy production, manufacturing, healthcare, and transportation are being re-imagined with AI/ML running in centralized cloud computing and operations centers controlling industrial processes that have historically been managed by human experts.  The legions of skilled process and operations engineers will not be replaced by AI/ML, but they will be given “superpowers” to do more work, in less time, with greater accuracy.  This article introduces foundational frontier technologies such as “Digital Twins” and “real-time analytics” that are emerging as the key enablers for a new era of industrial efficiency and productivity gains.

REIMAGINING AI AND ML FOR INDUSTRIAL APPLICATIONS

Typically, machine learning requires terabytes or even petabytes of data to train a massive ML model. The Internet economy is based on aggregating massive data sets from user clickstreams to determine likes, dislikes, interests, affinities, etc.  In the industrial space, it is common that a data scientist only has megabytes or gigabytes of data for training.  To make AI/ML useful for the industrial world, AI/ML models need to be aware that the industrial world is governed by the physical sciences; statics; dynamics; thermodynamics; fluid mechanics, biology, chemistry, etc.  Only then can the benefits of machine learning be realized for real-time AI/ML-based Process Control (AIPC) while filling in the gaps in small data sets. A nuanced understanding of the physical sciences that govern the behavior and performance of an industrial process or system within the said process is critical to track, control, and optimize its’ performance.

Innovation at the collaborative boundary between physical sciences (broadly defined) and AI/ML is where the next major wave of innovation will be found. We call this “AI+X” for short.

Industrial machines are increasingly becoming “cyber-physical”, meaning they are being infused with a proliferation of new sensors, data collection probes, and network connectivity to transport the data that is generated to a centralized location for analysis.  However, the first step in using these new sources of machine-generated data is to check their validity. AI/ML is fundamentally about analyzing large data sets to search for and identify patterns within the data, to group and classify elements within the data set into groups based on some pre-determined characteristics. This pattern matching is typically done by minimizing some error function between what you are observing and what you are seeking to find.  Sensor data from industrial processes is often inaccurate due to machine calibration issues, tolerances, or failures at some point along the data collection to analytics chain. Physical sciences provide the rules to validate the veracity of real-time IoT/IIoT sensor data before it is analyzed by AI/ML control planes.  This interdisciplinary collaboration between physics broadly defined and AI/ML is the key enabler for machines to control complex industrial processes.  Computers do only, and exactly, what they are told.  Traditional AI/ML from the purely digital domain analyzes the data that it is fed.

Consider the evolution of the modern aircraft engine to understand this industry trend towards 1) heavily instrumented, 2) purpose-built, 3) cloud-managed with AI+X to optimize performance.

The aircraft engine industry has gone through a major transformation over the last two decades. Aircraft engine manufacturers have gone from selling a discrete product (i.e., jet engines) to new business models (i.e., leasing/renting of jet engines) and more recently to a service model (example: selling horsepower). To support this transition, aircraft engine manufacturers such as General Electric have enormously improved their instrumentation by increasing the number of sensors from two hundred in an engine two decades ago to four thousand today. This new level of instrumentation provides vastly better situational awareness and helps the manufacturer improve product quality and helps them come up with creative ways of monetizing their investments.

The automobile industry is another example of how the power of AI/ML is being combined with vast amounts of sensor data and the physical sciences to actively control a complex real-world process.  In this case, the car is a purpose-built physical appliance/robot that exists to provide transportation-as-a-service.  Automobiles began as relatively simple machines that could be maintained by a reasonably handy person with some simple tools. Over the past decade cars evolved with onboard computers that perform advanced system diagnostics for basic maintenance tasks. Something as basic as tire pressure and tire wear is now continuously tracked with purpose-built, wireless sensors.  Modern cars have effectively become data centers on wheels.  Driver-assist via 360-degree view camera arrays, collisions avoidance systems, integrated navigation controls, and even “pet modes” that sense the presence of a pet when a car has been turned off and proactively control the climate in the vehicle are commonplace.  Every major auto manufacturer has a major R&D initiative for autonomous vehicles. AI/ML is foundational to the emerging systems for computer vision, radar, lidar, precision geo-location, collision avoidance, etc. that will make autonomous vehicles increasingly common over the next decade. Each autonomous vehicle will be actively managed by a “Digital Twin” running in the cloud where sensor data can be ingested, rationalized, verified as being viable, aggregated, and put to good use.

According to Strategy Analytics, we already have about 22 billion devices connected to the internet as of 2018 and that is expected to grow to about 50 billion by 2030.  This growth is going to be driven primarily by more connected machines and enables ML in the industrial space.

THE GREAT LEAP FORWARD IN INDUSTRIAL PROCESS CONTROL

As the need for bringing AI and ML to the industrial world emerges, it makes sense to focus on high-value industrial processes which are labor-intensive and/or hazardous.  Examples include, but are not limited to:

•    Energy (both traditional and renewable)
•    Semiconductor manufacturing
•    Automotive/transportation
•    Healthcare

These industries have highly talented process and control engineers, but they do not have the tools to make sense of the deluge of data coming from the connected machines that they are now tasked with managing.

To create the factories of the future as envisioned by the Industry 4.0 vision (coined by Klaus Schwab, the Founder of the World Economic Forum.), the following basic steps need to happen:

1.    The flood of data needs to be ingested in a cost-efficient manner.
2.    The data needs to be put into a form that is useful, relevant and actionable.
3.    Complex processes and end-to-end workflows need to be understood.
4.    Representative digital models of the industrial workflows need to be built.
5.    AI/ML techniques need to be applied to enhance workflow outcomes.

With current technologies, this work is only possible with a cross-functional set of skillset and thus can be prohibitively expensive.

As a precursor, IT operations management has evolved over the last decade from stage 1 (i.e., monitoring and observability) to currently at about stage 3 (recommendations) as shown in the graphic below.

Industrial process control will have to go through a similar transformation if it is to deliver superior business outcomes.  AI and ML will be the foundational technology to enable the evolution along this continuum.

ENTER DIGITAL TWINS AND TIGNIS AI-BASED PROCESS CONTROL

Based in Seattle and founded by the former VMWare Cloud Management CTO Dr. Jonathan Herlocker, Tignis has built a revolutionary platform that is uniquely positioned to address the AI-based Process Control (AIPC) challenges and opportunities outlined above.

Tignis recently launched the world’s first comprehensive solutions suite to quickly build, monitor, deploy and optimize industrial processes with Digital Twins based on AI/ML and physics. The Tignis PAICe Product Suite has three components:

  •    PAICe Builder, an analytics tool easy enough for anyone to use
    •    PAICe Monitor, allows for easy deployment to the private or public cloud
    •    PAICe Maker, deploys ML-based algorithms that improve with time

The key capabilities of the suite can be summarized as follows:

  •    Modeling a complex industrial process
    •    Data ingestion at web-scale and rationalize data so that it is useful
    •    Simple and efficient creation and deployment of ML to data to glean insights
    •    ML-based closed-loop control of the processes to optimize performance
    •    Interactive data analysis powered by a new intuitive language

Simply put, the Tignis platform enables Internet-scale big data aggregation and validation across all the connected elements in any high-value industrial process. Tignis validates the machine’s logs and sensor data against the physical science parameters, then provides an intuitive representation of the entire end-to-end process. In other words, creating a “Digital Twin” of the physical system that runs in the cloud, but is continuously fed with and powered by real-time data from the physical system.

What makes the Tignis approach different is the introduction of a brand new, low-code programming language called Digital Twin Query Language (DTQL), the first language designed specifically to build machine analytics on digital twins.  This puts the power of AI/ML in the hands of process engineers and helps them achieve process improvements not previously possible…without requiring them to write a line of software. Engineers now can utilize surrogate machine learning models that are more accurate and up to one million times faster than traditional physics-based simulations. Thanks to DTQL and the broader PAICe product suite from Tignis, process engineers can now leverage all the historical data they have collected and convert their deep expertise into machine learning-based predictive models that can be easily deployed and managed across their entire process ecosystem. The outcome is quicker production, better quality control and faster time to market. In essence, the Tignis PAICe product suite gives the world’s process and operations engineers super-powers so they can do their job of keeping the factories working at peak performance better than ever before.

TIGNIS AT WORK IN REAL-WORLD USE CASES

To put the power of the Tignis platform into practice, let’s take the example of the semiconductor manufacturing industry. The ongoing global shortage of semiconductor chips is impacting a host of industries, from phones to laptops to cars to smart appliances to equipment in hospitals. According to Goldman Sachs, the chip shortage could reduce U.S. GDP by as much as 1% in 2021. To make matters worse, the U.S. share of global semiconductor manufacturing capacity has dropped to 12% today from 37% in 1990, according to a study by the Boston Consulting Group. To make the US competitive in this industry, in addition to the financial capital which is expected from the recently passed bill at the US Senate, the semiconductor industry will need new technologies that help accelerate operational efficiency. Tignis’ PAICe Maker can be a key enabler to drive the next phase of innovation in semiconductor manufacturing. Therefore, it is not surprising that Synopsys and Tokyo Electron have elected to use the Tignis platform to optimize their processes. However, the applicability of Tignis’ technology is not limited to the semiconductor industry as evidenced by the usage of the Tignis PAICe Product Suite at energy companies such as Optimum Energy.

CONCLUSION

To date, the IoT and IIoT have largely focused on connecting more devices to the Internet. This has very little actual business value unless the IoT/IIoT data can be ingested, validated, then used to drive measurable business value from productivity gains, better yields, improved uptime, etc.

Tignis and the emerging field of AI+X (in this case the laws of physics) and Digital Twins running in the cloud while controlling real-world systems can enable the full potential of AI/ML to move from the digital domain to the analog/physical domain.
To unlock this potential, the Tignis approach is anchored on the following key principles:

  •    Instrumenting the physical world to enable data collection and aggregation
    •    Creating a high-precision state model for a complex system
    •    Building a graph of how the machines are interconnected end-to-end
    •    Ingesting massive amounts of sensor data from each machine in the process
    •    Enriching and validating the raw data with metadata to validate the plausibility
    •    Leveraging the “Digital Twin” to enable a new level of AI-based process control
    •    Using Tignis DTQL to enable this entire flow in a no-code / low code approach

In essence, the Tignis platform has put Machine Learning in the hands of process engineers who have never had access to it until now.  A variety of industries from semiconductor manufacturing to energy to automotive and transportation systems will now be able to leverage Machine Learning-based control algorithms to outperform classic process control and deliver process outcomes that were out of the realm of traditional possibilities. Some of the harshest, most labor-intensive backbreaking tasks out there such as weed abatement and harvesting crops in farming will be automated by AI/ML controlling fleets of heavily instrumented cyber-physical purpose-built robots. All these robots will have “digital twins” ingesting their real-time data sets, track their performance, and provide control stimulus.  Human operators will be used to address anomalies.  Much work remains to realize this grand vision of increased automation and productivity, but the Tignis AIPC suite has taken a great leap forward to democratize the full potential of AI-based process control with Digital Twins for the IIoT.  Please visit www.tignis.com for more reading.

About the author: Chris Rust is the founding partner of Clear Ventures. Rust earned a BS and MS in electrical engineering at the University of Lowell, then a MS telecommunications engineering and MS Engineering Management from the University of Colorado. Rust held engineering and product management roles at MITRE, US West, and broadband pioneer Roadrunner where he was a co-founder and lead architect. After that, Rust spent 14 years at Sequoia Capital and USVP as an early stage technology investor. He co-founded Clear Venture in 2014 where they help founders win in business technology and services. Rust was a Seed investor and Board Member of Tignis before acquisition by Cohu.

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]]> PAICe Builder Use Case https://www.cohu.com/tignis/paice-builder-use-case Mon, 20 Sep 2021 17:23:03 +0000 https://www.cohu.com/?p=45784 The post PAICe Builder Use Case appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Like any manufacturer, upstream oil and gas producers continually seek the next great efficiency improvement. They understand that even fractional gains in core equipment efficiency can yield substantial benefits to production, revenue, and equipment life. For oil producers, sucker rod pumps (SRPs), also known as beam pumps, are under constant scrutiny for this reason.

SRP systems are the most widely used method of artificial lift in onshore oil production. Designed for use on wells that cannot produce the well fluid on their own, which is by far the majority, the systems consist of many surface and subsurface components that must be periodically maintained to optimize operational efficiency.

Sub-optimal production in a single well can cost a producer thousands of dollars per day in lost revenue. Additionally, damaged rod pumping systems require extremely expensive repair processes called workovers, making predictive maintenance essential. A new approach was needed to accelerate efficiency improvements.

Tignis developed a machine learning (ML) model using PAICe Builder to demonstrate how easy it is to apply advanced analytics to automatically detect sudden efficiency losses and emerging equipment issues. The SRP analytics built into Tignis’ PAICe Builder monitor the rod pump cycle, identify anomalies, trigger alerts, and quantify the production losses and impact on revenue on a pump-by-pump basis. The potential impact on the bottom line is considerable.

Performance and diagnostic challenges

Any number of pump or rod issues can lead to failure or a drop in SRP process efficiency, such as pump valve leaks, bent rods, wear, corrosion, insufficient liquid supply, fluid buildup, gas interference, and sand production. These failure modes can present themselves in different ways for each pump or failure, making it difficult to write legacy condition-based monitoring alerts.

A dynamometer is one commonly used device to monitor SRP operation. These devices plot the SRP’s rod load versus position through every cycle, which can be compared to an ideal dynamograph to monitor if a pump is behaving normally. Although this method is considered to be very adept at catching SRP issues, the solution can be difficult to implement and maintain. Each SRP’s ideal dynamograph must be tuned individually. Additionally, dynamographs must be re-tuned as the reservoir and well properties, such as crude viscosity or fluid ratios, change over time, resulting in significant maintenance costs.

One proposed methodology of monitoring SRPs is utilizing pure physics-based models of the pump and well to produce the ideal process state and comparing the ideal to real-time sensor data from the well. However, in practice, this solution is not practical. Physics-based models of sucker rod pumps are computationally taxing and cannot be run in real time on currently available hardware. Calculations of a single cycle of the pump using readily available physics-based models can take more than a minute to compute, meaning that the calculation cannot keep up with the incoming real-time data.

Real-time analytics alternative

Tignis enables an automated approach to SRP monitoring by providing a tool that allows process/operations engineers to quickly build real-time ML analytics on physical systems and bring data-driven decision support to challenges across the operation. To provide an example, a new rod pump analytics model was built into PAICe Builder, powered by our proprietary Digital Twin Query Language (DTQL), which helps automate detection and notification of SRP inefficiencies by converting the SRP surface load and position into time-series data and running ML-based predictive models against it in real time.

A key advantage of this method is that ideal operation of the SRP is based on the pump’s historic behavior, meaning the analytic does not require manual setup and tuning for each pump it is applied to. This analysis can be broadly applied to many SRP manufacturers and applications. In addition, the model continues to tune itself over time using new incoming data. This method allows the quick and efficient detection of changes in well efficiency or operation.

Another advantage of using PAICe Builder for SRP analytics is that the embedded machine learning drastically increases calculation times of ideal variables. When trained on historic data, machine learning can predict ideal process states, similar to a physics model, but much more efficiently. This enables monitoring to happen in real time as data is being produced.

Not only does PAICe Builder uncover efficiency anomalies and immediately alert the operations crew, but it also allows engineers to translate the efficiency loss to the loss in barrels per day (bbl/day) produced, and then translates that oil loss to the loss in potential revenue per day. All this supporting data is included with the alert to help prioritize actions on SRP abnormalities.

Quantifying substantial business value



The SRP analytics model targets conditions that cause insufficient pump rates, such as friction between the pump and other subsurface components, equipment wear, and corrosion. The figure above illustrates how dynamograph data reflects the abrupt change in position and load behavior when a pump’s rate, or strokes per minute (SPM), drops after six minutes of normal operation. Using a simple rule set created in the PAICe Builder app, deviations like this are handled in three steps:

1. Available sensor data, in this case the annular fluid height in the well, flow rate out of the well, and surface pump position, is monitored to detect in real time when a significant change in surface load behavior occurs and its relationship to fluid production behavior, at which point an alert is issued with this information and the following supplemental data points.



2. The analytics determine the ideal flow rate (846 bbl/day) had the anomaly not occurred, as compared to the actual flow rate (506 bbl/day) as a result of the anomaly, which translates to a production loss of 340 barrels of oil per day.



3. The resultant daily revenue loss is computed by multiplying the production loss amount by oil price data that is either manually input or streamed into PAICe Builder. In this case, at $60 a barrel, the theoretical 40% loss in pump efficiency equates to $20,400 of lost revenue per day.

Armed with this knowledge, corrective actions can be prioritized based on their value to the operation. Simple connectivity to data visualization tools such as OSIsoft’s PI Vision allows operators to rank order the rod pumps by those causing the most immediate or substantial revenue loss, allowing them to concentrate their efforts to maximize production and profitability.

From this example, it is easy to see how early detection of efficiency anomalies can save thousands of dollars per day. Additionally, the SRP analytics reveal issues that don’t immediately impact oil production but can shorten pump life or cause expensive repairs, allowing predictive maintenance to occur before failure. One such example is a pump-off condition where the pump fills with insufficient fluid during upstroke. This condition can lead to fluid pound, causing accelerated stress and fatigue of subsurface SRP equipment, ultimately leading to a premature need to perform an expensive workover of the pump and other subsurface equipment.

The simplicity of the solution is also evident in how the analytics are applicable to a broad range of rod pumps. The custom ML model can be deployed to any rod pump that has sensor data, regardless of its manufacturer, rating, or geographic location.

The SRP model is just one example of how, using PAICe Builder, customers can quickly build a wide range of analytics for themselves to address whatever process challenges they are facing. ML analytics use cases like this one make it clear why artificial intelligence (AI) is the future of process control

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]]> Tignis Announces Commercial Release of PAICe Product Suite https://www.cohu.com/tignis/announces-commercial-release-of-paice-product-suite Wed, 25 Aug 2021 17:31:08 +0000 https://www.cohu.com/?p=45798 The post Tignis Announces Commercial Release of PAICe Product Suite appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Technology Innovator Tignis Launches New AI and Machine Learning Tool Suite for Manufacturing and Process Control that Puts the Power of Machine Learning in the Hands of Non-Data Scientists

Includes The Ability to Utilize Tignis-Created Surrogate Machine Learning Models That Are Up to One Million Times Faster than Today’s Physics-based Simulations

SEATTLE, Wash. – Tignis, a technology innovator in AI-Powered process control with a physics and engineering foundation, today announced the PAICe Product Suite, a new AI and Machine Learning analytics tool set for manufacturing and process control that puts the power of Machine Learning in the hands of non-data scientists.  This next-generation technology helps manufacturers achieve process improvements not previously possible with advanced process control (APC), including the ability to utilize surrogate machine learning models created by Tignis that are more accurate and up to one million times faster than physics-based simulations, resulting in faster production, better quality control and faster time to market.

At the PAICe Product Suite’s core is a brand new, low-code programming language built by Tignis called DTQL (Digital Twin Query Language), the first language designed specifically to build machine analytics on digital twins.  Through DTQL, the PAICe product suite significantly removes the obstacles that have prevented engineers from leveraging all the historical data they have collected into better decisions, and enables process and reliability engineers to convert their deep subject matter knowledge into hundreds of machine learning based predictive models that are easily managed across thousands of diverse physical assets – without having to become a data-scientist.

The PAICe product suite accelerates the ability to build, validate and deploy machine learning enabled solutions in the manufacturing and process industries, with an initial focus on semiconductor manufacturing, oil and gas processing, and energy.  It is the latest venture by Jon Herlocker, a serial entrepreneur and deep technologist with a track record of founding and building successful startups, as well as a former VP and CTO at VMware, a $12 billion dollar a year virtual infrastructure management company.  Tignis is funded and advised by industry leaders. Software executive Paul Maritz is an investor and member of Tignis’ Board of Directors.  Maritz was CEO at VMWare, and at Microsoft he was a member of the top executive management team.  Harel Kodesh, former CTO of GE Digital, is also an investor.

“The PAICe product suite puts Machine Learning in the hands of people that have never been able to use it before,” said Herlocker.  “This is important because Machine Learning-based control algorithms not only outperform classic feedback or feedforward Advanced Process Control, they continuously learn from new process data reducing the need to retune controls and improve over time.  With the PAICe product suite, many more manufacturers will now be able to take advantage of the benefits of machine learning in modern manufacturing and process control by increasing process quality, throughput and yield.”

The PAICe product suite enables Machine Learning for more than just predictive maintenance – it enables it for process optimization and directly in process control loops.  It is able to run Machine Learning-based simulations one million times faster than legacy physics-based simulations, allowing manufacturers to have real time feedback control in places that were not possible in the past such as real-time optimization.  Key features of the suite include:

PAICe Builder, a Machine Learning analytics tool easy enough for anyone to use.  It provides simple connectivity to OSIsoft PI data historian and other data sources, and is available in both downloadable or cloud versions, allowing you to do analytics anywhere.

PAICe Monitor, which allows you to easily deploy your analytics to private or public cloud infrastructure and thousands of assets with one click (including Web APIs to ingest and send data to and from data historians).  It offers a scalable cloud infrastructure so you can build the analytics you need, and the Tignis managed infrastructure means you only pay for the resources you need.

PAICe Maker, which deploys and manages machine learning based control algorithms that improve over time with more data.  Machine learning models can compute control variables at speed one million times faster than legacy physics-based simulations, allowing real time computation of control.  Hybrid on-premise and cloud architecture ensures low latency for control but the best possible model training and learning in the cloud.

Through the company’s extensive beta test program prior to launch, the PAICe product suite is in use by a number industrial clients spanning the Oil and Gas, Semiconductor and Energy industries.  Some notable users of the product suite include Tokyo Electron (TEL), Synopsys, Etairon, and Optimum Energy.  The product suite is now available directly from Tignis.

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]]> Intern Spotlight: Duke Technology Scholars Program (DTech) https://www.cohu.com/intern-spotlight-duke-technology-scholars-program-dtech Tue, 17 Aug 2021 14:36:19 +0000 https://www.cohu.com/?p=46304 The post Intern Spotlight: Duke Technology Scholars Program (DTech) appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Intern Spotlight: Duke Technology Scholars Program (DTech)




Check out our Tignis Internship Spotlight video to meet this year’s DTech scholars Anabella Buckvar and Thivya Sivarajah, and to learn about their valuable accomplishments. The Duke Technology Scholars Program (DTech) empowers the next generation of diverse leaders who will bring increased innovation to the tech industry. Our 2021 internships provided a well-rounded experience – coding, product design, and interdisciplinary teamwork. We appreciate our interns’ great contributions and wish them the best in the coming year!

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]]> Employee Spotlight: Eric Holzer https://www.cohu.com/employee-spotlight-eric-holzer Wed, 16 Jun 2021 14:51:20 +0000 https://www.cohu.com/?p=46201 The post Employee Spotlight: Eric Holzer appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Employee Spotlight: Eric Holzer

Tune in to this month’s Tignis Employee Spotlight where Eric Holzer discusses why he joined Tignis and what keeps him excited to come to work every day. Eric Holzer is a Senior Product Manager at Tignis. He holds Masters and Bachelor’s degrees in Mechanical Engineering from Purdue University and Georgia Tech. Prior to coming to Tignis, Eric work at General Electric and Uptake Technologies in roles ranging from reliability engineering, operations engineering, product management, and customer implementations.

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]]> Solve Real Industrial Programs with Analytics https://www.cohu.com/tignis/solve-real-industrial-problems-with-analytics Wed, 26 May 2021 17:36:41 +0000 https://www.cohu.com/?p=45803 The post Solve Real Industrial Programs with Analytics appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

I regularly advise industrial and manufacturing companies about how they can leverage modern analytics and machine learning to improve their operations, their revenue, and their profitability. I’m seeing a common pattern – where the successful deployment of analytics encounters resistance because one of three critical skill sets is either missing in the conversation or not incented to participate.

To successfully deploy intelligent analytics and achieve the desired business results, three core skill sets must be successfully melded together. It is a requirement that poses a fundamental challenge to many pursuing the technology’s potential, because the triad of essential skills is usually distributed across individuals or functional organizations that do not interact on a daily basis. Specifically:

  • Automation engineers understand the data and know what data is available (and could potentially be available), and they are intrigued by the possibilities of analytics and machine learning (ML). However, they don’t necessarily deeply understand the manufacturing process or equipment, such as how to recognize that a chiller is failing, so they don’t understand all the kinds of problems that would be valuable to solve with data. These engineers would be motivated to fill data gaps or software tool gaps if only they knew which data was important for solving a problem.
  • Process experts are deeply knowledgeable about the equipment and/or production processes and they know what process problems need to be solved. But they may not understand what is possible with ML and data analytics or how to use the analysis to solve problems. These subject matter experts, such as mechanical equipment specialists, equipment reliability engineers, oilfield reservoir engineers, and pharmaceutical process engineers, don’t have analytics on their priority list because their time is constrained by reacting to challenges in the production line, whether output problems, equipment concerns, or system downtime.
  • ML analytics/data science experts understand the analytics and what is possible using analytics, but they don’t necessarily understand what data is available from the equipment, or what problems need to be solved. The data science skill set is more commonly found in larger organizations such as pharmaceutical manufacturing.

Keys to success

If the project is handed off to just one team in the triad, it is much less likely to be successful. To optimally deploy advanced industrial analytics, it is necessary to create a business environment that connects the islands of expertise by encouraging the groups to interact with each other. Fostering the intersection of automation, process, and ML analytics insights improves the ability to identify and prioritize opportunities to solve real problems. Providing organizational support for cross-functional projects will ensure the efforts are sustained.

Impactful insights arise from the information exchange. Automation engineers will readily seek out data that the process team says is needed. Process engineers will leap at the chance to resolve existing problems with data when they learn the automation team can make data and tools available that are easy to use. Data science teams will eagerly deploy any analytics project identified as necessary to the operation.

One great technique to accelerate collaboration within the triad of skills is to hire individuals whose experience crosses two or more of the skill sets. These individuals can serve as translators, helping to build trust between functions and accelerate the speed of iteration. Such individuals are likely to be in high demand and hard to recruit, so another creative approach is to do internal cross training – take your process engineers and have them work on the automation or data science team for a while.

If a combination of skill sets is not available internally, partnering with an external vendor can fill the void. For example, to further accelerate analytics development, consider engaging with a vendor whose expertise extends beyond data science and into process, equipment, and/or reliability engineering.

Consider the upstream oil and gas industry, for example. At Tignis we have expert data scientists who not only have PhDs in petroleum engineering but were formerly oilfield reservoir engineers. They are experts not only with the latest in machine learning, but also understand the analytics, the process, and how to use data to solve upstream business use cases.

The bottom line

When engaging in digital transformation projects around analytics, start by creating a cross-functionally funded team that includes all three pillars of expertise. It is not uncommon for industrial organizations to be deficient in one or more of the three pillars, most commonly data science expertise.  When looking for external resources and suppliers to supplement your team it is best to look for organizations that have skill sets that overlap your team’s.  This will ultimately improve the overall communication of the team and accelerate the time to value of your digital transformation project.

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]]> The State of Semiconductors https://www.cohu.com/tignis/the-state-of-semiconductors Tue, 20 Apr 2021 17:45:07 +0000 https://www.cohu.com/?p=45807 The post The State of Semiconductors appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Semiconductors enable the modern world we live in by selectively controlling the conductivity of materials and ultimately the flow of information. As a whole, the need for getting the right information in the hands of the right people continuously grows year over year, despite recent challenges. During the Covid-19 pandemic in 2020, the global sales of semiconductors grew 5.4% and the market is forecasted to grow an additional 7.7% to a total of $476 billion in 2021. Currently, the United States excels in the design and innovation of new semiconductor technologies. The United States holds 47% (as of 2019) of the global sales market share but in order to keep that position spends around 40 billion a year in research and development. Alternatively, semiconductor supply chains tend to be more global to drive value and efficiency gains for the industry. With 80% of semiconductor foundries and assembly/test operations now concentrated in Asia, there is a clear strategic weakness for the United States and a need to consider investments in the semiconductor manufacturing sector.

Semiconductors are manufactured in a sequence of material patterning steps on a base substrate— usually a silicon wafer. The semiconductor industry uses silicon as a substrate due to its natural electrical insulating properties and its ability to absorb dopants that alter the properties of the silicon to their specific requirements.  Many semiconductors must go through a 50 or more step manufacturing process in order to produce functioning devices. Transistors, contacts, etc., all made of different materials are laid down that, in concert, function as the core of all modern computing devices. The main steps of this manufacturing process are photo masking, etching (selectively removing material of the desired circuit patterns), ionic implantation (to introduce a dopant at a given depth into the material using a high energy electron beam), and metal deposition.

From an electronics consumer perspective the industry regularly comes out with new hardware that is astounding, however within the industry these advancements were planned and considered for decades. For example, Samsung just released a 512GB DDR5 RAM module which uses High-K Metal Gate (HKMG) technology.  This technology has about twice the transfer speed and more than an order of magnitude more capacity than the current generation of DDDR 4 RAM modules. In this product, hafnium was used in the gates of the transistors of the device in order to achieve an extremely low leakage current.  Ultimately, this means the HKMG DDR5 RAM has significantly reduced power consumption and more reliability. Although it is being marketed as a newly released product, the technology used in this module was demonstrated over 20 years ago and has been in use for more than a decade in some applications. Maturing a technology to be ready for mass production is challenging and time consuming. In the end, new technologies that improve semiconductor performance are only valuable when manufacturing is viable at scale.

So what makes semiconductor manufacturing difficult and what tools do semi fabs have at their disposal? As semiconductor manufacturing processes shrink to the micron level, sources of process variance are becoming increasingly harder to control. This lack of control can lead to significant decreases in process yield, the quantitative measure of the quality of a semiconductor process. In addition, the significant number of steps in order to manufacture a semiconductor can have compounding effects on yield. For example, if each manufacturing step in the semiconductor manufacturing process is ninety nine percent successful then after 50 similar manufacturing steps the yield will be below sixty percent. In this example, 2 in every 5 semiconductors would be discarded due to production issues. The industry employs various advanced process control methods to monitor process variance. For example, feedforward control algorithms may use metrology from the previous step to recommend control schemes for the next step of semiconductor manufacturing. These methods of process control are well understood, have been around for decades, and largely rely on physical simulations of the process in order to make control decisions.  Unfortunately, physical simulations have their limitations. Each simulation is either an overly simplified representation of the real world process or they are extremely computationally expensive and cannot be run in real time during the manufacturing process.

As the semiconductor manufacturing industry looks forward to smaller critical dimension sizes and higher process yield, a larger number of process parameters need to be controlled with more precision. Rapid high-fidelity simulations at each step of the manufacturing process will be needed in order to optimize process control. The newly required quality and speed of simulations cannot be achieved with current advance process control technologies, therefore AI Process Control (AI-PC) must be utilized.  AI-PC simulates semiconductor manufacturing processes hundreds of thousands times faster than conventional simulation methods enabling real time process control. AI-PC’s ability to model more possible states and apply the best process parameters in real time significantly improves process yield and opens up new semiconductor technologies to mass production.

Inevitably, without significant investment into AI-PC and the advancement of semiconductor manufacturing, all those dollars spent on the new semiconductor technologies will just be a waste of sand.

Alexander Fry is a Data Scientist & Machine Learning Engineer at Tignis Inc.  He holds degrees in physics and astronomy including a PHD from the University of Washington. He currently serves as a key subject matter expert for Tignis in the Semiconductor Industry.

References

[1] https://www.semiconductors.org/wp-content/uploads/2020/06/2020-SIA-State-of-the-Industry-Report.pdf

[2] “IDC forecast $476 billion in 2021, a 7.7% year-over-year growth rate.”

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]]> Intro to AI-PC: The Next Level of Process Control https://www.cohu.com/tignis/intro-to-ai-pc-the-next-level-of-process-control Tue, 16 Mar 2021 13:51:59 +0000 https://www.cohu.com/?p=46466 The post Intro to AI-PC: The Next Level of Process Control appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Intro to AI-PC: The Next Level of Process Control

Manufacturing process control is all about getting as close as possible to set points to optimize quality, throughput, and yield. But traditional process control models such as PID loops, advanced process control (APC), and multivariable process control (MPC) are limited in their ability to achieve these goals. A new model that incorporates artificial intelligence (AI), overcomes the issues and is delivering dramatically improved outcomes.

Originally, process control was dependent on an operator’s gut feel or specialized expertise. Two similar models, APC and later MPC, emerged to help automate the control function. With APC, a static controller tunes a process for a single variable, such as the quality of gas coming out of a distillation process. MPC addresses process interactions by tuning multiple process variables with a static controller.

However, PID loops, APC, and MPC are static models, meaning unless or until someone manually intervenes, the same logic is applied continuously. In addition, most controllers are reactive in that they try something, look at the results, and then use that feedback to adjust. MPC is promising but it has not really caught on in industry because historic methods of engineering make its simulations inordinately expensive.

Feedback, feedforward, and predictive control

AI-PC is the next step in the process control maturity curve. It optimizes or replaces historic PID loops and APC loops by putting AI on the controllers and using machine learning models to generate and refine control processes. It trains off existing APC models, simulations, or historical process sensor data and is taught to apply sensor feedback from quality checks at the end of the process, allowing the logic of the control algorithm to get smarter. Besides intelligent feedback control, AI-PC’s extremely high computational speeds support feedforward and predictive control. These unique characteristics are transformative:

  • Drastically higher speeds enable real-time process control: Compared to the advisory approach of static process control, AI-PC controllers can run predictive physical simulations millions of times faster, allowing for real-time process control. Instead of asking one question every 15 minutes to make decisions based on the current process state, AI-PC can ask 1,000 questions a second, enabling it to simulate and predict thousands of futures as part of the control loop. 
  • Machine learning drives continuous process improvement: By learning to recognize when a process is performing poorly and retraining the process controller in a feedback loop, process quality increases over time. AI-PC homes in on a machine’s specific process and its unique environmental and operating conditions to continuously sharpen the process.

Optimized business outcomes

For discrete and process manufacturers alike, the advantages of real-time, continuously improving process control are many. For instance:

  • Quality: Tightening variances without exceeding spec improves process and product quality.
  • Yields: Limiting variations in quality avoids product scrap and increases throughput yields.
  • Uptime: Improving process quality minimizes unplanned outages from plant or equipment tripping.
  • Sustainability: Controlling emissions, energy efficiency, and other environmental parameters enables a more sustainable operation.
  • Safety: Operating within process constraints improves the safety of people and processes.
  • New business models: Pricing strategies can be aligned to the quality of products produced, such as premium pricing for higher-end products.

Manufacturing use cases

As semiconductor processes shrink into the single digit nanometers, sources of process variance are becoming increasingly harder to control. Most existing fabs are utilizing APC methods, which are not sophisticated enough to correct for significant sources of process variation. Ideally, for each process step, we would like to predict which set points or recipe will result in the highest possible yield. A feedforward predictive control uses metrology from the previous step to do this prediction. However, some processes – particularly those to enable next generation chips – are incredibly complicated, and their outcomes cannot be predicted without sophisticated simulation. It can take 10s of minutes or hours to run a single simulation step therefore they cannot be run on every single semiconductor wafer, and they cannot be run in real time.

One of the leading semiconductor production equipment manufacturers chose AI-PC from Tignis to help control one of its next-generation semiconductor fabrication tools. They had a large number of process parameters that needed to be controlled with each wafer and to identify the right parameters required a high-fidelity simulation that was computationally expensive and slow. This limited how many times they could update the process parameters. With AI-PC, they are able to simulate thousands of possible  futures each second and apply the best process parameters in real time to each wafer produced.

Crude oil distillation is another area where AI-PC is improving process control. Even though the multi-physics models used to simulate oil distillation are completely different from the models used in semiconductor manufacturing, the technique of training an AI-PC model is still effective. An AI-PC model can predict the results of the critical ASTM D86 lab measurement, recommend the set points that are predicted to yield the optimum measurement, and then continuously compare the actual results to the predicted ones.  At any point where there is drift between what AI-PC predicts will happen and what actually happens, the AI-PC model retrains to create an updated model which accounts for the process drift.

Regardless of the industry or the physical process being modeled, continuously improving feedback, real-time feedforward and predictive control make AI-PC the future of process control.

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]]> Why Tignis Engineers Love Our Applications https://www.cohu.com/tignis/why-tignis-engineers-love-our-applications-and-why-you-should-try-them Thu, 25 Feb 2021 18:52:54 +0000 https://www.cohu.com/?p=45811 The post Why Tignis Engineers Love Our Applications appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

As a Tignis team member, I can say I am always excited and surprised with the tools put together by our team. Internally, these tools have helped us deliver incident reports to our customers to save them time by quickly guiding their attention to incidents of interest. One such tool, Tignis’s interactive data analysis application powered by DTQL, has become so compelling that it now stands out in its own right. DTQL stands for Digital Twin Query Language because it leverages the interaction between physical components or assets in a system or process and then navigates relationships to strengthen analysis techniques.

The exciting news for you is that we are releasing this previously internal-only functionality for use by any team looking to get advanced analytical value out the sensor data from their physical equipment. We are already seeing strong interest from automation teams and maintenance teams. Tignis’s analysis application powered by DTQL is a line-by-line interpreter and graphing explorer that allows rules to be declared using logic, mathematical, statistical, or ML functions, the results of which can be plotted or used to create highlighted portions of interest. I have had a very pleasant and illuminating experience with this tool, including continuous surprises with its capabilities, and amazement at the anomalies it picks up that would have otherwise escaped me. I think this application would be of immediate help to many people. Allow me to tell you why I love it so much.



Currently, many maintenance teams are using Excel as a tool for data analysis. Don’t get me wrong, Excel has its place in the world and is an impressive tool in its own right. However, for data analysis it can be a bit cumbersome: wait for the program to load all your data, make sure you have selected appropriate rows or columns, deal with missing or incorrect data, find and navigate to the plotting feature, ensure correctness of the settings used to plot your data, select more rows and columns, and visualize with graphs that have pre-configured time ranges with little ability to navigate within them or zoom in/out. Additionally, all of the preceding issues get repeated for every analysis you want to do, there are data limitations on top of this, and lastly data formatting issues can be experienced when you export to csv or during a data import.  All of these issues go away with Tignis’s analysis application.

Tignis’s analysis application powered by DTQL aims to connect to existing infrastructure. The application was initially developed to be used exclusively by Tignis team members on Tignis’ platform, but we have also recently added an abstraction interface that allows us to create connectors to pull data in from other sources. Presently, the interpreter can pull data from CSV files and OSISoft Pi servers, but we plan to expand to more data sources in the future. Our aim here is to make it easy to work with your data. In the case of Pi, you can simply specify your server connection details and Tignis takes care of the rest.



Setting up a connection with Tignis’s application is extremely easy. Once the user provides their data historian credentials, it synchronizes data according to timestamp. There are no restrictions on sampling rate. Missing data is handled with flexibility. For example, the application makes it easy for you to extrapolate prior values to fill in gaps which is useful in the case where your system only stores changes in values. If you have sparse data, where some points are just missing, and you don’t know the correct value, a more sophisticated approach is to use ML to predict sensor values. This may sound complicated, but Tignis makes it so easy. I’m confident anyone can do it.

“If you have sparse data, where some points are just missing, and you don’t know the correct value, a more sophisticated approach is to use ML to predict sensor values. This may sound complicated, but Tignis makes it so easy. I’m confident anyone can do it.”

We have implemented the capability to work with templates. If you are familiar with OSI Pi’s element templates you will understand what this means. If not I’ll briefly explain: templates allow us to write rules on an asset class, which can then be applied to every individual entity (think asset) or element that fits within that template, saving a lot of time and effort. You can then select from a drop-down menu any individual entity that fits into that template to validate your rule against it. If you don’t have templates and only have a single entity or element you would like to work with, DTQL will accommodate that as well.

Tignis’ analytics application powered by DTQL has context-based intelligence baked in. If you are writing a rule on a template or entity and click the search button, it will pull up all the entities or templates available in your system. Once you have a target entity or template, clicking the search button again pulls up a list of sensors or features available to that target entity or template. In addition to the context based search feature, the search button also includes a list of all of the logic, mathematical, statistical, or ML functions that are available for use.

Now that I’ve mentioned why I personally love the new analysis application powered by DTQL from Tignis, let me tell you some of the things that you can do. I’ve had a lot of fun with it and I think you will too!

  • Create indicators and alerts for when scheduled maintenance should occur using equipment run times and meter readings (usage based maintenance)
  • Create alerts based on the number of occurrences of an event of interest using counting functionality.
  • Create alerts form SME knowledge using static thresholds for safety or reliability related events
  • Create multivariate physics based alerts from inputs such as equipment performance curves.
  • Create alerts using statistical analysis on signals where SME knowledge is not available
  • Create multivariate ML models for systems that are too complex or physics based equations are unknown.

All this allows the possibility to notify yourself or your team that you have a problem, after, during, or even before it has occurred.

I am excited to see our customers get as much out of this tool as we have internally.  Tignis onboarded it’s first external users to the interactive data analysis application powered by DTQL this quarter and plans to release it more broadly over the coming months.  If you’re interested in being an early adopter or trying the application, please visit info.tignis.com/dtql-app. Also, keep any eye on our website and social media for product release information!

Steven Herchak has worked at Tignis since January 2020.  He is an Integration Engineer with a M.A.Sc. degree from the University of Victoria. Previously, Steven has worked with a building automation and controls company and Schneider Electric.  At Tignis he is responsible for working directly with customers to interpret their needs and translate them into live analytics using DTQL.

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]]> Tignis is SOC 2 Type II Certified https://www.cohu.com/tignis/soc-2-type-ii-certified Fri, 22 Jan 2021 19:02:27 +0000 https://www.cohu.com/?p=45817 The post Tignis is SOC 2 Type II Certified appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Being a trusted provider of advanced data intelligence solutions comes with great responsibility. Tignis considers the privacy and security of our customers’ sensitive data to be a business imperative. That is why we recently pursued a company-wide initiative to achieve independent third-party certification of our security controls and their effectiveness.

We chose the System and Organization Controls for Service Organizations (SOC 2) framework, developed by the Association of International Certified Public Accountants (AICPA), to help us solidify and maintain a robust security posture. Successful SOC 2 audits and their resultant reports provide assurance that controls relevant to security, availability, and processing integrity of systems, in addition to the confidentiality and privacy of information processed by these systems, are suitable in both design and operating effectiveness.

Why now? Very simply, we wanted to make sure our security controls are the best they can be and at least as good as our customers’. As scientists, we understand that peer review is critical for validating processes and results. SOC 2 provided an opportunity for independent validation that our processes for handling sensitive customer data are optimized, sustainable, and scalable.

Additionally, some customers with SOC 2 in place are reticent to work with vendors who are not certified. The reason is clear: When everyone sharing data has SOC 2 processes in place, it establishes a level of trust that the data’s privacy and security practices are audited and under control, and it also helps subsequent audits go more smoothly.

Each SOC 2 control establishes that the given security policy exists, who is responsible for its implementation, what happens when the policy comes into play, and how it is documented, thus ensuring a complete audit trail. For example, a code of conduct control establishes the requirement that every new employee sign a code of conduct, who in HR is responsible for getting it signed, that a ticket will be generated and kept open until it is signed, and how it will be documented in the ticketing system.

Compliance steps strengthen data security

Coalfire was chosen to be our SOC 2 auditor, and we agreed to pursue SOC 2 Type II certification, which is more comprehensive and valuable than Type I. Type I validates whether the security controls are in place at a given moment in time. Type II takes it to a whole other level by not only establishing that the controls exist but auditing them over an extended period to ensure they are effective, the policies are followed, and changes are properly documented.

To prepare for the certification audit, we met with Coalfire to review our existing practices and documentation, such as how we onboard and offboard employees, how we ensure our passwords are secure, how we handle physical office keys, and how security events and their fixes are tracked. We were fortunate that our meticulous DevOps team had already instituted many solid security practices.

With Coalfire’s recommendations in mind, we bolstered some existing controls and documentation requirements and also created new ones. Next, an audit of our roughly 200 controls spanned from Feb. 15 to Sept. 15, 2020. By Nov. 2020, we were successfully certified as SOC 2 Type II compliant.

Going forward, we have committed to having internal quarterly meetings, such as a security policy and controls review to make sure we are adhering to our policies and documenting any exceptions, and annual meetings, such as a risk assessment where we imagine potential future threats, weigh the risks, and proactively implement relevant controls. We will also be independently audited at least annually.

Such practices automatically lead to continuous improvement. Regularly reviewing our document trail of identified and corrected incidents facilitates ongoing improvements to our overall security posture.

We expect the growth in demand for SOC 2 compliance throughout industry to continue. For Tignis, it is already having a positive impact on our internal and external oversight, risk management, vendor selection, and customer peace of mind.

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]]> AI for Industrial and Manufacturing Use Cases https://www.cohu.com/tignis/ai-for-industrial-and-manufacturing-use-cases Tue, 10 Nov 2020 20:19:36 +0000 https://www.cohu.com/?p=45823 The post AI for Industrial and Manufacturing Use Cases appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Predictive analytics use cases are validating its value proposition and driving increased investments in artificial intelligence (AI) and machine learning (ML). Real-world examples in manufacturing and other asset-intensive industries demonstrate the technology’s ability to study data patterns in systems, sensors, and processes; automatically detect anomalies; and proactively predict failures and inefficiencies in time to make corrections.

What is not well understood is that ML models require ongoing care and feeding. There is generally an unfounded expectation that ML initiatives are implemented in project form, on a finite timescale. In reality, model implementation is never “done” because operational objectives, connected systems, process inputs, and personnel tend to change over time. Without continual tuning and retraining, algorithm learnings will eventually become distorted, leading to faulty conclusions and higher risks and costs from missed opportunities to improve reliability, efficiency, and performance.

The return on investment will deteriorate as well when there is a lack of awareness or resources to proactively manage ML models. Selecting a predictive analytics solution that includes oversight by data scientists and subject matter experts — at no extra cost — provides protection from excessive lifecycle costs of the advanced technology.

Change is inevitable

To optimize predictive analytics and avoid undesirable surprises, attention must be paid to how conditions and variables evolve after ML models are trained and implemented. Examples of what may be encountered include:

Incomplete training: Systems may have a set of significantly different modes of operation. For example, expected system performance is radically different in startup, shutdown, and steady state modes. Models will decline in prediction quality when they enter a mode for which they have not been trained. Proactive retraining is needed to ensure the models become relevant and accurate.

Unexpected inputs: An ML model that is not trained on all possible inputs will not predict as well when something unexpected is encountered. For example, if an oil and gas plant’s ML model is trained on a certain composition of crude, or a coal-fired power plant’s model is trained on a certain composition of coal, and somewhere upstream another form of the product enters the process, the model may need to be retrained to accommodate the new input.

Evolving priorities: Predictive models trained with a high sensitivity to precision will make fewer but more accurate predictions. On the other hand, those trained with a high sensitivity to recall will predict a wider range of problems, though the risk of false positives and irrelevant results is greater. When sensitivity targets shift over time, the model needs to be retrained to the new objectives, even if it is technically predicting the same physical variables.

Altered systems: Adding new equipment to a system, such as an additional chiller, or upgrading an asset to one with a different power curve, are examples of system alterations that require algorithm retraining. Likewise, if a sensor breaks or is removed, or a new type of sensor is added, retraining becomes necessary.

New personnel: A new plant manager or engineer may bring a different operating philosophy to the plant. If they are used to operating with setpoints that are different than how a model was originally trained, it must be retrained to reflect the changes.

Managing change is optimal

Having ongoing ML oversight services included with your AI solution will help to prevent unexpected risks and decreasing ROI. Tignis’ physics-driven analytics solution includes subject matter expertise for the life of the subscription, at no extra cost. Not only do Tignis ML models automatically retrain on new data as it arrives, but our data science experts will ensure your objectives are always being met by continuously monitoring the performance of your connected systems, and meeting regularly with your teams to discuss model training and optimization opportunities.

Though the enduring need for model tuning is not always well communicated, you need not be caught unaware. Remember that machine learning is never done, and you will be on the right track for analytics optimization.

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]]> Move Beyond Asset Reliability to System Reliability https://www.cohu.com/tignis/move-beyond-asset-reliability-to-system-reliability Tue, 06 Oct 2020 19:27:00 +0000 https://www.cohu.com/?p=45827 The post Move Beyond Asset Reliability to System Reliability appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Traditionally, when we think about improving reliability, we focus on individual assets and how to reduce their downtime. Less common, yet equally beneficial, is applying reliability efforts to the system as a whole, such as a manufacturing production line, a continuous chemical production process, or a wastewater treatment system.

Best practices including preventive and predictive maintenance, condition-based maintenance, and reliability engineering have long been applied at the equipment or component level. These are proven, highly effective strategies for anticipating and avoiding asset failures and related costs while increasing plant and process uptime.

The emergence of the industrial internet of things (IIoT) has condition monitoring sensors rapidly growing in prevalence in industrial and other asset-intensive environments. A familiar example is installing a vibration monitoring device on a critical motor, pump, or compressor to detect common precursors to mechanical failure, such as worn or faulty bearings.

Importantly, individual assets that are part of a larger process may appear to be working correctly, even though the process itself is at risk. That is why it is necessary to also monitor system reliability – not just asset reliability.

For example, significant risks to system reliability may stem from imperfections of the control system. In almost every system we analyze, we find that at first glance the system appears to be doing its job, but a closer look at its control systems will reveal a notable lack of control due to issues ranging from imperfect PID loop tuning to improperly sized equipment.

Though these systems may be meeting demand at the moment, their instability means that any stresses or changes could lead to unpredictable behavior, or even system-wide failure. At a minimum, the issues are creating unnecessary wear and tear on valves, dampers, and the like, which can eventually cause larger and potentially more serious problems affecting quality, throughput, safety, and/or uptime.

A modern approach to managing mechanical system reliability involves analytics based on physics and machine learning (ML). The proprietary Tignis solution continuously monitors and analyzes sensor data from connected mechanical systems and models the complete system in a digital twin, where usage patterns are learned, and any divergence stands out. Besides automatically detecting and analyzing hidden system anomalies, it also identifies the operational impacts and immediately notifies the appropriate personnel, allowing time to address any faults or inefficiencies and prevent system failure.

Active management of critical assets and systems alike should be a reliability improvement imperative. We recommend extending the value of your existing asset monitoring sensor investments and taking a closer look at the reliability of your complete industrial systems.

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]]> News Roundup September 2020 https://www.cohu.com/tignis/news-roundup-september-2020 Mon, 28 Sep 2020 19:34:15 +0000 https://www.cohu.com/?p=45831 The post News Roundup September 2020 appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Our team is always keeping an eye on news surrounding digital twins, machine learning, data analytics and more. Here are a few articles that we found especially interesting during the month of September.

Industry 4.0 & the Water Sector – Water Finance & Management

This article in Water Finance & Management hits the nail on the head when it comes to IIoT and the water industry. It outlines six major technological elements of Industry 4.0, and how “integration of these elements into operable production systems has the promise to link global value chains.” It also outlines why Industry 4.0 is “massively important for water.” With the capabilities existing today, the article notes, “It’s now a matter of architecting, implementing, deploying and then operating and maintaining.” Tools like AI, ML, big data analytics, and more are the building blocks of the 4th industrial revolution. They will provide increased productivity, more resilience, and a direct return on investment to those who take full advantage.

(Be sure to check out our Tignis TV interview with Steve Allbee, former U.S. EPA Project Director, for more insights into the critical role of asset management in the water and wastewater treatment industry.)

Make the most of digital twins and IoT – Riviera 

Many industries around the world are opening their eyes to the power of digital twin and machine learning technology, and the cruise industry is no exception. This article in Riviera highlights how Rolls-Royce Power Systems is looking to “provide condition-based asset management based on how an engine is actually operated.” Rolls-Royce is using machine learning techniques – specifically a neural network – to detect and classify anomalies and build a body of knowledge which is continually updated for all customers of a particular engine class.

When Tackling Manufacturing’s Long Tail, Speed Is Key – Forbes

In this valuable Forbes article, Natan Linder, CEO of Tulip, breaks down the “long tail” problem in manufacturing operations, why it’s often difficult and expensive to solve, and four things manufacturers should be paying very close attention to in order to tame the tail in their operations. By doing so, manufacturers can break through inefficiencies and make a big impact on their future operations. Linder recommends that “Focusing your attention on the large aggregate value you can coax from the many discrete operational challenges you face everyday is…a way to balance fast business results with foundation setting for a digital future.”

The post News Roundup September 2020 appeared first on cohu.com.

]]> So Many Risks and Faults at Stake https://www.cohu.com/tignis/so-many-risks-and-faults-at-stake Wed, 16 Sep 2020 19:54:15 +0000 https://www.cohu.com/?p=45863 The post So Many Risks and Faults at Stake appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Some take the reliability of critical equipment and systems for granted, but those tasked with keeping them operational are keenly aware of the threats. Because there are so many potential risks and faults to manage, advanced condition monitoring and analytics are needed to hold them at bay. The Tignis solution can detect a minimum of eight different types of errors or unfavorable conditions, enabling a comprehensive path to reliability and optimization for connected industrial systems.

While most plants do not have the necessary data to immediately start utilizing supervised ML, many plants have collected at least a few months of historical sensor data. With this data, here are examples of classes of faults that Tignis can detect using anomaly detection and engineering principles:

  • Mis-sized or out-of-spec equipment: Tignis can detect incorrect or improperly sized equipment. For instance, a pump that had been shipped from the manufacturer with the wrong size impeller inside could have produced devastating outcomes had it not been discovered by the software. Another example is valves not sized for the expected differential pressure, which can make them hard to control.
  • Out-of-control / unstable controls: Almost every plant that Tignis monitors has an automated control loop that attempts to maintain certain setpoints. Control loops must be tuned to ensure that they are stable and will always converge. Just as a car constantly overcorrecting will swerve back and forth, posing a dire hazard, issues like this can occur in control systems. They are technically “out of control” not only because they may never reach the setpoint in some cases, but the oscillations can propagate through the system and cause havoc in unpredictable ways. Tignis has detected and resolved issues where systems had multiple control loops that interacted with each other in unpredictable ways.
  • Sensor failures: Stuck sensors, bias sensors, drifting sensors, mis-calibrated sensors—Tignis has discovered these and more. Failed or failing sensors can invalidate decisions made based on their readings. In systems with automated control loops, a bad sensor means an incorrect control decision. Depending on how bad the sensor error is, outcomes could be catastrophic.
  • Mechanical wear and obstruction: When the right sensors are available, Tignis can pay close attention to the amount of work a system is doing and compare it to the power utilization of the associated assets. When changes or trends in asset or system efficiency are identified, it often can be traced back to problems such as a bearing that is starting to wear, a filter that is becoming clogged, fouling on the inside of pipes, or stuck and leaky valves or dampers. Identifying these issues when they are just emerging provides time to avoid critical conditions and failure.
  • Hidden component failures: Tignis brings hidden conditions to light. For example, large and complex monitored systems often have redundant components. In the case of multiple fans ventilating a cleanroom, when one fan fails, another can provide the full service, but that “backup” fan is now the “critical” system as it does not have its own backup. If Operations is unaware of the primary fan’s failure and need for repair or replacement, it puts the cleanroom at risk. Another hazard is intermittent or momentary component failures, which can precede a complete failure. These, too, may be missed by Operations if not automatically detected.
  • Automation programming errors: PLCs and similar control hardware must be programmed. The quality of automation programming can be highly variable, particularly with respect to handling exceptional conditions. When a system enters a state that was not predicted by the programmer, unexpected results may occur and lead to unanticipated and potentially catastrophic situations. Tignis’ automation can detect some or many of these errors by monitoring the resulting physical properties.
  • Incorrect schematic data or incorrectly labeled sensors: P&IDs are not always updated correctly, and sensor tags are frequently wrong or undecipherable. These issues raise the potential for detrimental events, as both humans and computers may be making decisions based on faulty knowledge of how the system is built or currently being operated. Tignis can help to detect such errors so they can be proactively corrected.
  • Violations of best practices or regulatory compliance: Most plants have well-documented design standards for equipment, and some plants are subject to governmental regulations. The standards and requirements can be encoded in Tignis’ proprietary query language and continuously monitored to prevent violations.

Staying on top of all the possible threats is easier with an intelligent, physics-driven condition monitoring and analytics solution. There is no better way to keep your critical assets running reliably and help your company consistently meet its performance objectives.

The post So Many Risks and Faults at Stake appeared first on cohu.com.

]]> Risk and Fault Detection Strategies https://www.cohu.com/tignis/risk-and-fault-detection-strategies Tue, 08 Sep 2020 19:59:29 +0000 https://www.cohu.com/?p=45867 The post Risk and Fault Detection Strategies appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Operators of critical machines and systems have no time for downtime. Connected mechanical systems equipped with industrial internet of things (IIoT) sensors will constantly stream data about their condition in the hopes that someone will detect clues about their future state. Processing the massive volume of data and converting it into timely measures to extinguish threats is supported by condition monitoring and analytics solutions.

The best solutions employ advanced risk and fault detection strategies that expedite analytics, diagnostics, and decision making. The Tignis solution contains four automated mechanisms for detecting risks and faults, each of which requires a different set of available information:

  • Anomaly detection: When monitoring a system, the observed value of a given physical property is constantly compared to the predicted value, and if there is significant or sustained variation, it is marked as anomalous. This may include flow, load, force, pressure, temperature, vibration, or other performance variables.

Powered by ML, anomaly detection involves taking historical sensor data, picking a measurable outcome that matters (usually one sensor that measures a particularly important physical property), and then training an ML model to predict that property based on the measurements of other correlated properties across the system.

Anomaly detection can be applied to any digital twin with sensor data, even when Tignis data scientists personally have no idea how the system or machine works before seeing it. This minimizes barriers to value.

  • Engineering principles and statistics: Issues can be detected based on known engineering/physics principles and statistics using Tignis’ proprietary analytics query language. The digital-twin-aware query language sits somewhere conceptually between SQL and Excel, and it is designed to enable non-technical subject matter experts such as mechanical engineers to easily and quickly build rules about how a system with a given digital twin should Compared to anomaly detection, this mechanism can be more prescriptive about detected problems and possible solutions.

Engineering principles require encoded engineering/physics rules for at least one of the components in the system being modeled. Fortunately, many basic components are common everywhere, including pumps, fans, tanks, compressors, and more.

Tignis works with each new customer to add new rules for the processes and assets they really care about, whether they are common or not. The efforts are facilitated by the increasingly large library of encoded engineering knowledge we are amassing.

  • Supervised machine learning: The most effective ML develops when training examples are available; specifically, records of past occurrences of events that should be preemptively predicted and prevented in the future. Supervised ML enables early detection of previously experienced issues. Think of this as training a machine to recognize the signature of an undesirable condition.

Supervised ML requires well-documented and annotated digital records of past failures along with associated sensor data. That data often does not exist but is incredibly effective when it does.

  • Simulation: Never-before-experienced issues can be detected early by combining supervised ML with simulation. If a high-fidelity simulator is available for a process, Tignis can use it to simulate any possible state of the system and generate training data, which is then used to train an ML early-detection algorithm. The ML detection algorithms are orders of magnitude faster than the simulation and can be practically applied in real time.

High-fidelity simulators are not widely used in industry at the moment. They are most often reserved for the most risky or complicated plants or processes, such as nuclear plants or some hydrocarbon plants, because they can cost millions to build and will only apply to a single plant. That will change as Tignis has developed techniques and tools that make simulation more accessible. Tignis has world-class experts in chemical engineering, mechanical engineering, and physics who can build simulations for high-value processes. For example, Tignis recently built a simulator for the physics of one process step within semiconductor processing.

Threats will become a reality if they remain unseen. Using an advanced condition monitoring and analytics solution with a multifaceted blend of automated threat detection mechanisms helps to expose equipment risks, enable predictive maintenance and reliability optimization measures, and keep the operation running as expected.

The post Risk and Fault Detection Strategies appeared first on cohu.com.

]]> News Roundup – August 2020 https://www.cohu.com/tignis/news-roundup-august-2020 Tue, 01 Sep 2020 20:05:22 +0000 https://www.cohu.com/?p=45871 The post News Roundup – August 2020 appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Our team is always keeping an eye on news surrounding digital twins, machine learning, data analytics and more. Here are a few articles that we found especially interesting during the month of August.

Industry 4.0: Reimagining manufacturing operations after COVID-19  McKinsey & Company

COVID-19 has thrown the business world into crisis mode and the manufacturing sector is no different. McKinsey explores how manufacturers have responded to the unprecedented volatility, observing that “players utilizing digital solutions are better-positioned to weather the storm, having moved faster and further than their peers during the crisis.”

This in-depth article includes recent survey results, a look at adoption rates for digital twins and automation technologies, valuable historical data from previously conducted McKinsey surveys, and critical ingredients for a successful digital transformation.

Digital Twins Gain Traction in Manufacturing – Design News

Digital Twins have gained traction in all areas of manufacturing across a variety of sectors. This article and accompanying slideshow by Design News provide insightful examples of how the industrial world has taken advantage of digital twin technology to help with system design, IoT and more. Improving efficiency, plant productivity, and predictive maintenance are just a few of the many benefits explored.

Smart pumps are key for more sustainable cities – Smart Cities Dive

As smart cities gain momentum, action needs to be taken to ensure the systems within are as optimized as possible. According to Smart Cities Dive, “a surprising amount of energy (and cost) can be saved by reconsidering the designs of pump systems.”

Peter Gaydon of the Hydraulic Institute points out that, “the pumps responsible for heating and cooling buildings, treating and distributing water, and generating power are often overlooked in conversations around smart or sustainable cities.” This article covers the concept of smart pumps as well as key considerations to maximize their energy efficiency.

The post News Roundup – August 2020 appeared first on cohu.com.

]]> News Roundup – July 2020 https://www.cohu.com/tignis/news-roundup-july-2020 Tue, 11 Aug 2020 20:10:44 +0000 https://www.cohu.com/?p=45876 The post News Roundup – July 2020 appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Our team is always keeping an eye on news surrounding digital twins, machine learning, data analytics and more. Here are a few articles that we found especially interesting during the month of July.

Role of the IoT and AI in the digital transformation of water utilities – Sensor Industries

Municipalities around the world are striving to initiate big changes using IoT technology. With improved sensor technology and wide-spread digitization, the logical next step is to evaluate incorporating Artificial Intelligence (AI) and Machine Learning (ML) technologies, helping efficiently process data from multiple sources in real time into actionable operational insights. We couldn’t agree more!

10 Reasons Why The Cloud Is The Future Of Industrial Monitoring – Forbes

In yet another excellent article, Louis Columbus explains how cloud technology can help prolong the life of equipment, benchmark performance over time, improve collaboration, and more. Cloud-based SCADA (supervisory control and data acquisition) systems “are providing new insights into preventative maintenance, changing long-standing assumptions, and improving performance.” SCADA data also helps identify factors impacting machine stability by location, asset and process workflows.

More IoT devices, but homeowners’ insurance adoption still lags potential – Digital Insurance

According to research from Markets and Markets, the size of the global smart home market will grow from USD 78.3 billion in 2020 to USD 135.3 billion by 2025 at a CAGR of 11.6 percent over the five-year period.

In this article, Digital Insurance delves into three categories of IoT technology that interest insurers right now: water leak detection, smoke and fire suppression, and intrusion detection. Using data from their policyholders’ smart home technology, insurance carriers will be able to deepen customer engagement, increase loyalty, and reduce risk.

The post News Roundup – July 2020 appeared first on cohu.com.

]]> Duke Technology Scholars Program – Tignis Q&A with Intern https://www.cohu.com/tignis/duke-technology-scholars-program-tignis-qa-with-intern Tue, 04 Aug 2020 13:57:25 +0000 https://www.cohu.com/?p=46033 The post Duke Technology Scholars Program – Tignis Q&A with Intern appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

The Duke Technology Scholars Program (DTech) is a comprehensive effort to empower the next generation of diverse leaders who will bring increased innovation to the tech industry. The program centers around the idea that community, mentorship and hands-on experience make the difference in recruiting and retaining under-represented people in technology fields.

According to Amy Arnold, Executive Director of DTech, this year’s program includes 108 women studying Computer Science and/or Engineering. These talented women are doing technical summer internships at leading technology companies of all sizes, including 23 working for companies based in Seattle. Today’s blog post features an interview with Micaelle (Mimi) Larrieux, who is interning with Tignis.

Please tell us about yourself.

I am a rising junior at Duke University, although I’m just completing my first year as a student there because I spent my freshman year at Johns Hopkins University. I am from Massachusetts and went to boarding school in-state throughout high school. I enjoy volunteering with my church through various programs, and absolutely any sport you could name. My competitiveness and work ethic are some of the main reasons I believe I’m able to be successful when tackling new challenges.

Tell us about your background in engineering/computer science.

I remember having a love for STEM (science, technology, engineering, and mathematics) as early as middle school, when it became clear that the disciplines encouraged questions and the love of curiosity. This led me to try various engineering summer programs throughout high school, which solidified my interest in creating technology to help people. Because there were no engineering classes in my high school, I picked up computer science because it seemed interesting. I ended up completing two years’ worth of computer science along with some very interesting projects.

During my freshman year of college, I took a hiatus from the subject to pursue chemical and biomolecular engineering, but my interest was piqued once again upon my arrival at Duke when I decided to pursue degrees in biomedical engineering and computer science. I’ve only taken a few formal courses, but I do a lot of learning online and through the many available resources which has really helped me explore new topics outside of the classroom.

Can you tell us a bit about the Duke DTech program, and how you got involved?

At Duke, I’m part of a pre-professional tech organization called Catalyst. It was through Catalyst that someone suggested I look into DTech, and I immediately started attending workshops to learn more about computer science as well as the recruiting process. Amy Arnold and Kelly Perri have created a spectacular network of women in STEM who are eager to help and support each other during their time at Duke and through the recruiting process.

What made you want to intern at Tignis?  

I was intrigued by Tignis at first glance because the idea of using computer-based analytics to evaluate mechanical systems—which I had learned about through my engineering courses—was very exciting. I’ve always loved engineering—not necessarily computer based—and the idea that I would have an opportunity to not only hone my computer science skills but also expand my knowledge of these systems really drew me to Tignis.

Another reason I was so excited by Tignis was the smaller size of the company, and my ability to make an impact through my work that would be of genuine use to my coworkers. Through conversations with my interviewers, it became clear that they too wanted to help me grow and learn in an environment that would challenge me, and as soon I heard that I couldn’t wait to get started!

What do you hope to learn at Tignis? 

Although the circumstances in the summer of 2020 are anything but ordinary, I do hope to learn what it is like to operate in a start-up environment alongside a small group of coworkers. Being able to form connections and ask questions is really important to me, and I wanted to learn how to do so as a coworker as opposed to a student. With regard to software engineering, I hope to continue learning new languages and software essential pivotal to developing companies, as well as more about machine learning and analytics.

What have you learned so far?

I have learned too much to concisely recap in a paragraph. What comes to mind is my work learning about notebooks, databases, several Python packages, machine learning, and Git. This knowledge has allowed me to approach challenges with a deeper understanding of the software I’m using, as well as more elegant solutions to the projects, assignments, and ideas I’ve been confronted with in the past.

Where do you see yourself in 10 years, and how can Tignis get you there?

While I have no idea what kind of work I’ll be doing in 10 years, I hope that it will be challenging, and have the goal of making a positive impact on the lives of many people. Tignis has shown me what it is like to be in a collaborative yet challenging work environment. I also hope to have a good work-life balance, and generally just feel happy when I wake up in the morning. Having one-on-one conversations with my coworkers has really allowed for some great insight into how they achieve these goals, and I can only hope that I will be with a company that cares as much for its employees’ well-being as much as Tignis does.

What do you enjoy doing in your free time?

I love sports, and played volleyball in college my freshman year. I spent about 40 hours a week in season and at least 25 out of season playing and travelling. I still play a lot of outdoor volleyball—grass and beach. Overall, I really like to stay active and learn new things.

A closing word from Tignis’ Jon Herlocker

Tignis was pleased to hire Mimi Larrieux as a Seattle-based intern. When COVID-19 upset our plans, we both agreed to try and make this work remotely. The challenges could have been overwhelming. However, Mimi’s tenacity and personal skills, along with her software knowledge, have made it an easy and enjoyable engagement. The high-paced startup world doesn’t allow for a lot of hand-holding, and Mimi didn’t need it. She gathered requirements, asked questions as needed, and doggedly knocked off a series of ambitious tasks. She will be missed when she returns to Duke, and we wish her great success.

The post Duke Technology Scholars Program – Tignis Q&A with Intern appeared first on cohu.com.

]]> Tignis Sponsors UW Industry Capstone Project https://www.cohu.com/tignis/tignis-sponsors-uw-industry-capstone-project Tue, 21 Jul 2020 20:22:15 +0000 https://www.cohu.com/?p=45887 The post Tignis Sponsors UW Industry Capstone Project appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

The University of Washington College of Engineering is renowned for its innovation. Their Industry Capstone Program brings together UW students and chosen companies to tackle multidisciplinary engineering problems. The program allows students to work side-by-side with industry technical partners and faculty on real-world projects, and provides valuable experience, skills and connections.

Tignis recently sponsored a UW Industry Capstone Project, giving support to a team of talented seniors who were selected to design and build an innovative HVAC (heating, ventilation, and air conditioning) modeling solution.

This 6-month project was proposed for academic review by College of Engineering faculty, with funding provided by Tignis to cover project and program costs. The student team—Robert A. Rochlin (B.S. Mechanical Engineering), Zhenghao Guo (M.S. Electrical and Computer Engineering), and Tiankai Zheng (M.S. Electrical Engineering)—were supported by a team of experts from Tignis, PSR Mechanical, and Pacific Northwest National Laboratory (a U.S. Department of Energy lab).

The students designed and implemented software responsible for getting IIoT sensor data from buildings into a normalized format in the cloud, worked with HVAC experts to identify the most common issues affecting performance of HVAC systems, created analytics algorithms to detect those issues, and designed a web-based application to expose all the value to HVAC engineers.

This project provided the students with real-world experience in highly marketable skillsets such as IIoT software design, big data analytics, data science, machine learning (ML), control theory, HVAC optimization, and hybrid physics/ML models.

The outcome of this project was aimed at increasing the speed at which the industry can identify and validate opportunities to improve HVAC efficiency and cost, which could have a direct and broad impact on energy usage globally.

The post Tignis Sponsors UW Industry Capstone Project appeared first on cohu.com.

]]> The Journey of a Data Scientist: Chiller Surge Counts https://www.cohu.com/tignis/the-journey-of-a-data-scientist-chiller-surge-counts Wed, 15 Jul 2020 17:37:28 +0000 https://www.cohu.com/?p=45914 The post The Journey of a Data Scientist: Chiller Surge Counts appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Chillers vibrate routinely, surge occasionally, and excesses in both can be problematic. Distinguishing between benign and detrimental behavior is essential to ensuring successful chiller maintenance and protection.

Refrigerant that reverses course and flows from the condenser to the compressor causes chillers to vibrate more than normal, creating a groaning or squealing sound. Excessive surge events, whether from poor maintenance or poor control of water flow rates or temperature, can reduce a chiller’s reliability and life span.

The first line of defense is often a surge detector that counts chiller surge events; however, uncleansed data leads to poor analysis and conclusions. Plots of raw, unfiltered vibration sensor data typically reveal monotonically increasing surge counts interspersed with spikes, dips, and plunges (Figure 1). False positives are not uncommon and decision making based on misleading data can be ineffective and costly. Even in simple tasks, such as alerting on a rapid increase of a counter, the devil is in the details.



Figure 1: Raw surge counts reported by a chiller. Should be monotonically increasing. Bad data leads to false alarm.


Doing analysis with equipment data requires special expertise. With the right tools and skill sets, steps can be taken to cleanse the data, find the signals through the noise, and generate thresholds for actionable alarms based on meaningful surge information. Tignis helps companies apply data science in this manner to improve preventive and predictive maintenance. Tignis has developed a proprietary technology that enables rapid and agile integration, normalization, and analysis of physical equipment and associated sensor data.

Data science increases trust in the data

There are several reasons surge count data can be “dirty” and prone to misinterpretation:

  • Sensors may register surges even when the chiller is off, whether due to maintenance or another environmental trigger.
  • Surge counts may momentarily drop to zero due to a power or network communication failure, and then bounce back up to where the counter left off.
  • Surge counts may reset to zero if a sensor loses power for too long, is replaced, or needs replacement, causing the counter to start over.
  • Some sensors are more sensitive than others, e.g., one chiller’s detector might register 10 surges while another registers one surge for a similar event.
  • Overly sensitive detectors may produce false alarms when no surge actually occurred, and overactive or malfunctioning sensors may do so repeatedly.

Rules, flags, and filters are cleansing techniques used by data scientists to produce useful information. Instead of relying on an absolute count of every detected chiller surge, data science allows plants to see actual changes over longer periods of time by taking moment-to-moment data (e.g., every five minutes) and comparing the current count to the previous count.

Rules can flag when there are more events than expected so that suspicious values that clutter up relevant data can be dropped out. With filters, zero values from momentary drops or periods when the chiller was not actually running can be dropped, along with the negative values seen in full resets. Identifying and eliminating random spikes in the data helps to focus attention on clumps or clusters of spikes. These measures, which increase trust in the data, enable analysis of well-defined groups of activity for the overall number of surges over a given period of time.

Once the data is cleaned and filtered, thresholds can be set to generate alerts. The goal for alarm thresholds is to generate alerts when the chiller has a surprising number of surges over a specified time frame. For instance, more than 15 surges in a six-hour period could be an event triggering an alert to the maintenance team (Figure 2).


Figure 2: Surge count over six-hour windows, after filtering bad data. But what’s the right threshold on which to alarm? Different chillers need different thresholds.

Using this analysis, a dynamic threshold can be assigned based on how many surge events for this chiller is normal over a period of time. This is accomplished by finding a high quantile over an historic period, such as the 98% quantile over the previous 30 days, and alerting on surges above that amount (Figure 3).

Figure 3: Surges over six hours, with dynamic threshold unique to each chiller. Finally, an alert rule that generates the right amount of alerts across all chillers.

Dynamic alert thresholds are useful because they can be applied to chillers across the board. Due to variances in chiller design, sensor sensitivity, and operating conditions, the threshold for one chiller may not work well for another. Therefore, alerting thresholds must be selected individually for every chiller based on its own historic activity. Applying dynamic thresholds to the cleansed data is an effective longer-term solution.

Strong tooling and expertise make a difference

Most of the work in data science and machine learning (ML) is in cleaning the data and getting it ready to model. Having robust tooling and deep technical expertise in data analysis and transformation streamlines the process. For instance, Tignis developed an internal tool for data processing, exploration, and modeling of mechanical systems. It establishes a digital twin of the system where all connections and sensors are visualized and modeled, and a data processing layer on top where the rules, filters, and thresholds are formulated and deployed.

Preventing the destructive effects of chiller surge is a must for any maintenance organization, and data science can facilitate an intelligent approach. Tignis is uniquely equipped to help.

The post The Journey of a Data Scientist: Chiller Surge Counts appeared first on cohu.com.

]]> News Roundup: June 2020 https://www.cohu.com/tignis/news-roundup-june-2020 Tue, 30 Jun 2020 17:52:28 +0000 https://www.cohu.com/?p=45918 The post News Roundup: June 2020 appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Our team is always keeping an eye on news surrounding digital twins, machine learning, data analytics and more. Here are a few articles that we found especially interesting during the month of June.

AI Is The Uncertainty Cure Enterprises Want In 2020 – Forbes

“85% of enterprises are evaluating or using artificial intelligence in production today.” This is one of the many insights from a recent O’Reilly research report, AI Adoption in the Enterprise 2020, that Louis Columbus highlights in his latest Forbes article. The report is based on a survey of 1,388 respondents from 25 industries, and presents detailed insights about which ML techniques advanced enterprises choose to apply.

Too Big to Succeed: How to Rightsize Your Compressed Air System and Start Achieving Real Cost Savings – Plant Services

Many organizations have systems that are oversized and running inefficiently. Here, Plant Services breaks down several cost-effective ways to decrease maintenance costs and improve long-term reliability. The article shares real-world examples of oversized systems and the inefficiencies that resulted from them, as well as practical approaches to mitigate oversized compressors.

Automated Assembly in the Age of Industry 4.0 – Assembly Magazine

The data being collected by high-speed multi-station automated assembly systems has expanded dramatically over recent years, with real-time information helping engineers build smarter machines. IIoT is all about finding ways to improve machine performance, and this valuable Assembly Magazine article features in-depth recommendations from systems integration and control systems engineering experts.

The post News Roundup: June 2020 appeared first on cohu.com.

]]> Reliability: Prepare Your Plant for a ML Future https://www.cohu.com/tignis/reliability-prepare-your-plant-for-a-ml-future-start-saving-your-failure-data Tue, 23 Jun 2020 18:04:19 +0000 https://www.cohu.com/?p=45928 The post Reliability: Prepare Your Plant for a ML Future appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Equipment reliability management tools are far more automated and intelligent than in years past, but whether and how well they work for any one company depends on an enduring challenge: available data. It is well established that machine learning (ML) from sensor condition data can speed up problem identification and analysis, but poor or absent failure data can slow ML as well as human diagnostics and decision making. Users with solid failure data can make better and faster decisions based on optimized ML findings, leaving more time for beneficial root cause analysis and continuous improvements in maintenance and reliability initiatives.

Best data practices enable the best ML techniques

Of the two ML methods, supervised learning and unsupervised learning, the former is most effective and actionable because it is based on previous experience. Just as a human operator learns from past failures, supervised learning algorithms are taught to recognize the signature of a potential impending failure by providing it with several training examples. Training the algorithms effectively requires keeping records of past failure descriptions and the associated sensor data leading up to the failure.

The other alternative, unsupervised learning, does not require training data but the results are significantly less effective and less actionable. Its algorithms look for patterns and structure in data in an exploratory manner. Truly unsupervised learning can only detect deviations from normal where normal is something that has been observed before. It cannot easily explain why a condition is happening or why it might be important. Therefore, to get the most value from an ML investment for reliability improvements, it is important to amass failure data and enable supervised learning.

Importantly, sensor-related failure data is not the only variable for success. Companies can and should also prepare for ML by saving failure metadata, including standardized failure codes/modes, cause codes, solution codes, and unstructured failure information or observations in the work order. The more information available, the more prescriptive you can be on the failure predictions.

Organizations who are best at capturing failure metadata have reliability best practices embedded in their culture. For example:

  • Failure Modes and Effects Analysis (FMEA) proactively evaluates equipment and components for failure risks and codifies the potential causes and effects.
  • Root Cause Failure Analysis (RCFA or RCA) looks back reactively at failures to determine the root causes and documents how to prevent them in the future.
  • Criticality Analysis serves to identify and prioritize the equipment and systems most critical to the business and align maintenance and recovery efforts as well as failure data saving efforts accordingly.

The knowledge base gleaned from these valuable exercises supports prescriptive recommendations for maintenance actions and continuous improvement of reliability practices. Combined with ML, they offer a wealth of potential for improving reliability while mitigating aging workforce and aging equipment concerns. Those who choose to make the investment should aim high and make saving failure data a core priority.

The post Reliability: Prepare Your Plant for a ML Future appeared first on cohu.com.

]]> The Necessity of Remote Plant Management https://www.cohu.com/tignis/the-necessity-of-remote-plant-management Tue, 16 Jun 2020 18:53:12 +0000 https://www.cohu.com/?p=45973 The post The Necessity of Remote Plant Management appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

During COVID-19 companies around the world have called for their workforce to work remotely during these uncertain times. This new, pandemic-affected reality adds urgency to the need for remote machine monitoring and diagnostics. On top of ongoing industrial challenges such as ever-tightening budgets and an aging workforce, manufacturers and operators are now dealing with social distancing and sheltering in place to avoid the spread of a novel coronavirus.

These times require a more flexible approach to plant management – including remote work. A key next step for industry leaders in addressing this challenge is to become familiar with the tools and technologies that can support these operational and cultural changes. Fortunately, the options are improving every day – literally – thanks to machine learning (ML). Applying ML and digital twins to automate condition monitoring of assets and whole processes can enable better process management from any location. Service-centered solutions allow you to work closely with subject matter experts (SMEs) no matter where you are at the time.

Heightened intelligence and visibility

In these challenging times, the Tignis team is here to help. We can enable modeling and remote monitoring of complete mechanical systems – not just the individual assets. A digital twin or replica of your system can be quickly constructed based on your existing historian sensor data and piping and instrumentation diagrams (P&IDs).

ML algorithms use the physics of flow to study patterns and anomalies in your system, whether it’s fluid, electricity, mechanical energy, or heat flow. ML and digital twins can help automate the prediction, identification, and notification of risks to reliability and efficiency, and formulate recommended diagnoses and corrective actions. System and component statuses, problem areas, and problem causes are presented in the dynamic, searchable digital twin, helping reliability engineers to validate and act on the diagnostics, which are continuously improved by ML.

Optimized for on-site and remote workers

Authorized users can login to Tignis’ cloud-based solution anytime from anywhere with an internet connection and browser. They are alerted to conditions requiring attention, shown only relevant information, and can easily access deeper layers of data when needed.

At a glance, they can visualize the flow, pressure, connectivity, and status of the sensors and systems, how they are performing live with current sensor data overlaid, and the lead-up to problems with a P&ID time slider. Decisions can be made within minutes – even by those with minimal training. This approach is far faster than researching disparate P&ID schematics, historians, and trend charts, and nothing is paper based.

Expertise on tap

Paired with the ready-to-use ML solution is access to Tignis’ SMEs and data scientists. Our team can answer industry or technology questions, provide software guidance, and implement suggested improvements. We understand plants are dynamic with ever-evolving technologies, systems, personnel, and production objectives, so we not only provide immediate value, but also actively enhance the solution based on valued customer feedback.

With COVID-19 catapulting the need for remote work into the spotlight, it is important for business leaders to plan for a safe, efficient, and productive future. On behalf of the Tignis team, we would be honored to help.

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]]> Mechanical System Condition Monitoring https://www.cohu.com/tignis/mechanical-systems-condition-monitoring-the-intersection-of-machine-learning-and-real-world-experience Tue, 09 Jun 2020 18:09:05 +0000 https://www.cohu.com/?p=45932 The post Mechanical System Condition Monitoring appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

The long-standing best practice of monitoring asset conditions for early signs of failure has saved industrial organizations untold millions of dollars. Its longevity is a testament to its success in helping to avoid unplanned downtime and improve safety, productivity, and operational performance. What is remarkable is how the once-manual exercise has evolved into an automated, digital, science-based practice.

Today, human and machine intelligence coexist and grow with modern condition monitoring technology. Sophisticated analytics powered by machine learning (ML), intuitively applied by skilled workers, are propelling asset reliability, availability, and uptime to higher levels.

Journey to excellence

Fewer of us remember when machine condition monitoring was limited to technicians with deep equipment and process expertise. Through their eyes, ears, nose, or hands, they could sense when something was awry and search their memories, P&ID schematics, trend charts, and historical records to diagnose and correct impending problems.

Recognizing the immense value of the practice and the risks of relying on pockets of expertise, tools began rolling out to sharpen condition monitoring and analysis. Route-based inspections using techniques such as vibration analysis, oil analysis, and infrared thermography became the norm, and software and data historians were implemented to encapsulate the information.

Now, in the era of the industrial internet of things (IIoT), cloud- and network-connected assets have smart sensors automatically harvesting condition data and fueling cutting-edge analytics and diagnostics. It is here where human and machine intelligence come together to elevate predictive maintenance, enable prescriptive maintenance, and optimize business outcomes.

Tignis harnesses this capability in our physics-driven approach to monitoring the condition of connected mechanical systems. It is not enough to monitor individual assets; automated, continuous system monitoring enables unprecedented reliability and efficiency improvements.

Using ML algorithms and digital twins, Tignis analyzes mechanical system connectivity; monitors changes in physical properties such as temperature, pressure, or water volumes; weighs the significance within the operational systems; and offers detailed recommendations. Because it applies the physics of flow — whether of fluid, water, electricity, mechanical energy, or heat – it increases the speed and accuracy of fault detection, reduces false positives, and delivers unique insights into anomalies that help with diagnostics, root cause analysis, and decision-making.

Why blending human and machine learning matters

ML algorithms and associated data continually self-improve by design. For this reason, some users may perceive the technology to be a threat to their job. In reality, the roles are complementary, and the human element is indispensable. The intelligent analytics must be successfully applied, and that requires skilled workers with a penchant for continuous learning.

Tignis facilitates learning. Visualization of ML analytics in a digital twin allows users to rapidly recognize where and why degradation exists in the mechanical system, process, or operation. They can drill down for further details, compare current and historical IIoT sensor data, and quickly define and execute the best course of action to eliminate or mitigate the issue.

Learning is accelerated with cloud-enabled remote monitoring and automated alerts providing real-time visibility for authorized operators, technicians, reliability engineers, or other concerned users – no matter where they are located. Collaboration capabilities allow internal teams to work together on issues and consult with Tignis data scientists or subject matter experts when needed.

There is no better way to show how much you value your personnel than to enrich their expertise and facilitate continual learning. Their success is your success.

The post Mechanical System Condition Monitoring appeared first on cohu.com.

]]> News Roundup – May 2020 https://www.cohu.com/tignis/news-roundup-may-2020 Tue, 02 Jun 2020 18:13:23 +0000 https://www.cohu.com/?p=45936 The post News Roundup – May 2020 appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Our team is always keeping an eye on news surrounding digital twins, machine learning, data analytics and more. Here are a few articles that we found especially interesting during the month of May.

Adopt Digital Twins to Mitigate Impact of Pandemic – MachineDesign

MachineDesign wrote an excellent article on how organizations navigating the pandemic are preparing for the “new normal.” According to the interview of Karen Panetta, dean of graduate engineering at Tufts University, and pioneer in the development of digital twins, “The pandemic acts as a catalyst for extending technologies and digital twin simulation can be a critical tool in a proactive, strategic response.”

In a detailed Q&A, Ms. Panetta discusses the utility of digital twins, as well as what we can expect in the future. She shares, “Employing digital twins can expedite an enterprise’s efforts by giving it the ability to anticipate stress points, enable more efficient model adaptations and more quickly rework its processes.”

Don’t Rush Digital Transformation: 8 Considerations in a New Era – Industry Week

Stephan Liozu breaks down eight considerations for manufacturing leaders to think about as they redesign their digital programs. He presents how to best approach “digital transformation 2.0” – a new normal that will be much more practical, realistic, and focused on impact.

He shares valuable considerations including clear focus, greater levels of integration and coordination between the core legacy entities and the digital business, recognition of true digital innovations as new business models, and more.

A Guide to Industry 4.0 Predictive Maintenance – IoT For All

IoT For All takes a deep look at predictive maintenance – everything from the differences between preventative and predictive, to how it works, advantages, and implementation. With the introduction of machine learning, the manufacturing sector is presented with a massive opportunity to improve the efficiency of their maintenance programs.

This article’s takeaway: “The advancement of AI and ML will assist in predictive maintenance, ultimately providing businesses with an extreme advantage over anyone not moving towards industry 4.0.”

3 Real-World Applications for Pneumatics and IIoT – Design World Online

This article provides specific and insightful scenarios for real-world applications of IIoT-enabled pneumatics. It touches on common goals for manufacturers and industrial operations, such as improving safety, improving predictive and preventative maintenance effectiveness, increasing energy efficiency, and more.

The post News Roundup – May 2020 appeared first on cohu.com.

]]> News Roundup – April 2020 https://www.cohu.com/tignis/news-roundup-april-2020 Tue, 05 May 2020 18:39:47 +0000 https://www.cohu.com/?p=45960 The post News Roundup – April 2020 appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

We are always keeping an eye on news surrounding digital twins, machine learning, data analytics and more. This month our team has been discussing big ideas surrounding Industry 4.0 and what it takes to build a reliability-based maintenance system. Here are a few articles that we found especially interesting during the month of April.

Digital Twins for Managing Water Infrastructure – Water World

Water World magazine had a great article on digitizing data to “help utilities get the most out of their data to improve their decision-making, efficiency, and service.” The article addresses the challenges of data isolated in disconnected IT solutions, spreadsheets and paper records – as well as solutions such as digital twins being adopted by progressive water utilities.

Making the Move to Industry 4.0 – MachineDesign

This article from MachineDesign touches on several key topics within Industry 4.0 – Industrial ethernet deployment, security, and handling large amounts of data. Exploring the benefits of automation, the author observes, “Today, autonomous systems are more interconnected, communicating, analyzing and interpreting data to let managers intelligently decide and act in other areas of the factory.”

7 Steps for Implementing Reliability-based Maintenance – Reliable Plant

Reliable Plant identified 7 key steps to building a reliability-based maintenance program. Here’s a valuable excerpt from the article: “Manufacturers are turning to reliability-based maintenance (RBM) more and more, using RBM as a strategy to help maintain valuable plant assets and eliminate the costly adverse impacts of performance issues like delays and unexpected downtime.”

Augmented Intelligence Webinar – Tignis CEO, Jon Herlocker

Our CEO, Jon Herlocker, joined forces with InfluxData for a webinar surrounding real-time data combined with machine learning. If you’re curious about how Tignis is architected, this is an excellent resource to learn more about the Tignis condition monitoring and analytics solution.

The post News Roundup – April 2020 appeared first on cohu.com.

]]> Working Smarter What It Means for Industry Plants https://www.cohu.com/tignis/working-smarter-what-it-means-for-industry-plants Tue, 28 Apr 2020 18:44:20 +0000 https://www.cohu.com/?p=45965 The post Working Smarter What It Means for Industry Plants appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

“Do more with less” – the age-old mantra of the industrial world – is even more urgent now with the pandemic straining plants to unprecedented limits. Financial resources are tight, supply chains are disrupted, uptime expectations remain high, and the challenge of recruiting and retaining skilled maintenance talent continues to grow. Though it is harder than ever to remain productive and profitable, the demand for new efficiencies is relentless.

Plants can work smarter, not harder, with the right solution sets. The Tignis condition monitoring and analytics solution augments existing intelligence about connected mechanical systems, providing the ability to visualize emerging issues, resolve problems faster, and do more with less. Our physics-based approach melds the cloud, digital twins, modeling, and machine learning (ML) to automate and simplify otherwise labor-intensive processes.

Efficiencies by design

Tignis’ efficiencies are built into the solution at multiple levels:

Automated monitoring: Tignis continuously monitors massive quantities of incoming IIoT sensor data to automatically detect and report on anomalies, trends, and impending asset failures. It reduces dependence on plant floor personnel to watch and test for symptoms.

Remote analytics: The cloud-based platform enables remote access to high-speed analytics and high-fidelity diagnostics, providing crucial insights to authorized users wherever they are located. Unnecessary trips to the plant are avoided when decisions and actions can be handled remotely.

Intuitive intelligence: Tignis automatically brings attention to degradation, operational impacts, and root cause evidence, and provides access to multiple layers of supporting detail through an interactive, responsive user interface. Problem areas are visually narrowed to the affected components, piping, instruments, and process flows using a 2D digital twin of the mechanical system with overlaid sensor data. Compared to relying on traditional historians and HMIs, decisions made with Tignis are more informed and resolutions are timelier and more effective.

Work prioritization: Maintenance planners and schedulers can confidently prioritize work orders based on risk and asset criticality due to earlier warning of issues, higher-quality alerts, fewer false positives, and informed diagnostics. The ability to focus attention where it is most needed avoids mission-critical asset failure and the need for emergency maintenance.

Continuous improvement: Using ML and adaptive modeling capabilities, Tignis constantly learns your mechanical systems, adapts to evolving conditions and changing systems, and improves the identification, analytics, and diagnostics of condition anomalies.

Outsourced expertise: Tignis is a software-as-a-service (SaaS) solution, meaning all the expertise needed for optimal results is included. You can rely on our IT professionals, data scientists, and domain experts instead of staffing the roles internally. We facilitate real-time collaboration between your plant personnel and our subject-matter experts in order to accelerate and extend your return on investment.

Best-practice maintenance: By enabling preemptive actions for detected issues, Tignis helps plants to apply cost-effective, condition-based predictive maintenance (PdM) to improve asset reliability and performance. Costly run-to-failure and time- or usage-based preventive maintenance strategies can be limited to the least critical, disconnected mechanical systems or eliminated altogether.

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]]> 3 Steps to Optimizing System Reliability https://www.cohu.com/tignis/3-steps-to-optimizing-system-reliability Tue, 14 Apr 2020 19:24:58 +0000 https://www.cohu.com/?p=45998 The post 3 Steps to Optimizing System Reliability appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

As discussed in one of our recent posts , the sensors that you use to monitor your facilities can produce a lot of data you don’t really need. Sometimes less is more: You can be more efficient when you’re able to focus just on the data that is sensible and pertinent—even though it’s tempting to think that the more data you have, the better you can perform your duties, and the less susceptible you are to getting blamed for system failures when things go wrong.

But the other important thing to remember is that sensors are an imperfect technology. They can be miscalibrated to send the wrong data; they can send data you don’t really care about; and of course, they can weaken and fail. Accounting for sensor limitations is an important part of maintaining healthy asset monitoring and management.

Tignis uses the concepts of digital twin and physics-based modeling  to create system reliability solutions that put sensor data to work in useful, sensible ways.

  • digital twin is a database that models your installation as a sum of its many components, connections, and characteristics. Without a digital twin, you have no electronic medium for accurately capturing the myriad ways each system part relates to and impacts the other parts so that you can develop meaningful knowledge about them.
  • Physics-based modeling applies basic physical laws to the data models in your digital twin so that the solution can understand and learn usage patterns that conform to physical logic.

Using these two elements in tandem has plenty of advantages for modernizing your long-term asset management approach. In a series of upcoming posts, we’ll talk about the three steps you can take with sensors to align with this new perspective on asset management and help improve the ways you monitor system reliability:

  1. Optimize your use of existing sensors to avoid the unnecessary time and expense of installing new ones.
  2. Identify faulty sensors and other issues more readily in your environment.
  3. Eliminate false positives so that your monitoring solution gives you better, root cause-focused reporting.

Stay tuned to learn about each of these steps in more detail.

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]]> Use Your Data to Get Results https://www.cohu.com/tignis/use-your-data-to-get-results-not-just-to-have-it-around Tue, 07 Apr 2020 18:48:14 +0000 https://www.cohu.com/?p=45969 The post Use Your Data to Get Results appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

The rise of 24/7 asset monitoring and the internet of things (IoT) have produced many benefits, but they’ve also introduced complexity. Much of this is due to the proliferation of monitoring data derived from the sensors you use to instrument your equipment. Potential advantages only become actual benefits if you can build a usable methodology that applies 24/7 data in smart ways that yield meaningful operational improvement.

To do this, you need a platform that not only gathers the data from the sensors, but applies basic logic to it in critical ways:

  • Does the range of values make sense in context? For example, if the sensor measures outdoor temperature in a part of the country where this range is 30 to 100 degrees Fahrenheit nearly all of the time—do the majority of sensor readings support this range? Are the readings closer to the top of the range during summer months, and closer to the lower end of the range in the winter?
  • Is the data sensible from a basic scientific perspective? For example, does the power usage of Pump A increase when the pump speed increases? If not—was the pump speed point accidentally swapped with Pump B when you programmed the automation controller? Likewise, do the readings across two tightly coupled components (such as a valve that water flows through, and a tank where the water is collected) match up in a way that makes physical sense?
  • Is the data an anomaly, maybe produced by a one-time environmental event (such as an unusually hot day) or a human factor (such as a visiting contractor accidentally whacking a pipe with his stepladder)? Is the system currently being maintained or repaired in a way that would throw an anomalous reading? Are there any other “normal” explanations, such as the system undergoing a routine power-off/power-on cycle?

And so on. It’s the kind of logic that human operators would apply anyway when they arrive to diagnose a problematic situation. But with the right information about the site, computers can use machine learning to do it faster, more proactively, and at a much deeper level than human observation traditionally allows.

By overlaying detailed schematics about each system and its sensors with known facts about the physics of how each element should behave, you can build toolsets that go a long way to automatically discovering design faults, detecting potentially miscalibrated sensors, and proposing corrective action.

At Tignis, we help you streamline and modernize the ways you collect, analyze, correlate, and report sensor data in your environment. Rather than simply having data for data’s sake, we get you to a place where the data you’re collecting has direct impact on your operations, enabling the analysis you need to achieve real business outcomes.

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]]> Monitoring Solutions that Help People, Not Just Systems https://www.cohu.com/tignis/monitoring-solutions-that-help-people-not-just-systems Wed, 25 Mar 2020 18:57:35 +0000 https://www.cohu.com/?p=45977 The post Monitoring Solutions that Help People, Not Just Systems appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Many vendors talk a big game when it comes to revolutionizing the various industries they support through the use of their software and other innovations. What’s often missing from this message is the positive effect that kind of transformation also has on individual lives and careers.

At Tignis, we’re proud of our technology and what it can do for businesses, but we haven’t lost sight of what it can mean for the individual people as well—stakeholders like you who have often, in one way or another, bet your job on making the business successful.

The right approach to modernizing can benefit you in a few key areas:

Build your skills, experience, and reputation

Finding new ways to keep critical assets up and running is good for your company’s bottom line, which means it’s also good for your job. By taking part in the transformation of your environment to more modern methods of asset management, you stand to gain valuable experience in the growing areas of machine learning and advanced analytics as they pertain to your role. Whatever measures your company uses to assess your job performance, you can be well-served by a platform that empowers you to achieve more.

Reduce stress and free up your time

Having analytics you can trust translates to fewer last-minute scrambles and middle-of-the-night emergencies. Shifting your environment from reactive to proactive maintenance can improve your job satisfaction and free up your work schedule to focus on new projects and develop new skills.

Streamline your monitoring operations

By producing alerts and recommendations that are more accurate and action-ready, a modern monitoring platform helps make your workload more manageable by saving you time and effort. You can maintain systems more proactively while reducing the time you spend chasing down the root cause of issues and responding to false positive alarms.

With these focus areas in mind, we always remind ourselves that in addition to providing benefits to businesses, our own business model must also sustain real benefits for the people we work with directly.

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]]> What is a Digital Twin, and Why Do You Need One? https://www.cohu.com/tignis/whats-a-digital-twin-and-why-do-you-need-one Thu, 12 Mar 2020 19:07:48 +0000 https://www.cohu.com/?p=45986 The post What is a Digital Twin, and Why Do You Need One? appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

Somewhere, you have physical schematic drawings that show all of the parts of your mechanical systems and overall asset environment. If you’re organized, you know right where these drawings are—good for you. If you’re lucky, they’re reasonably up-to-date. They might even be in an electronic format, like PDF. But, on their own, they’re insufficient as a basis for modernizing and streamlining the ways you monitor your assets.

That’s because machine learning operates on data, not analog drawing components. Even a PDF doesn’t cut it: It’s electronic, but it’s still just basically a photograph of the physical drawings, not a set of data. Meaningful analysis can’t be performed unless all of the descriptions in your schematic drawings are translated into ones and zeroes.

When we develop a digital twin for our customers, we take the details of your schematic—along with many other details we add in the course of learning about how your system elements rely on and impact one another—and we put it into a database. The thousands of rows and columns in the database model your installation as a sum of its many components, connections, and characteristics. Now, instead of relying on and interpreting a human-readable set of drawings, you have a dynamic digital entity with the power to support complex computations and analysis.

Creating a data base replication of your physical environment—a digital twin—enables you to:

  • Manage changes and updates to your mechanical systems in a durable, detailed, electronic format.
  • Apply powerful machine learning algorithms that optimize reliability and performance.
  • Readily update and expand your monitoring and analytics tools based on new understanding.
  • Future-proof your environment for the next wave of analytics by having a digital systems blueprint.

At Tignis, we use physics-based machine learning algorithms along with the digital twin to yield concise analysis, tailored to your specific environment’s needs. Without a digital twin, you have no electronic medium for accurately capturing the myriad ways each system part relates to and impacts the other parts so that you can develop meaningful knowledge about them.

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]]> The 3 Essentials of Impactful Systems Analysis https://www.cohu.com/tignis/the-3-essential-of-impactful-systems-analysis Thu, 12 Mar 2020 19:04:08 +0000 https://www.cohu.com/?p=45981 The post The 3 Essentials of Impactful Systems Analysis appeared first on cohu.com.

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PHYSICS, MACHINES AND DATA

Tignis, A Cohu Analytics Solution logo in white

At Tignis, we help you increase the reliability of your connected mechanical systems so you can be smarter and more innovative in the ways you do your job. Our “secret sauce” is using physics-based machine learning algorithms along with a database replica of your physical environment—a digital twin—to yield concise analysis, tailored to your specific environment’s needs.

In future blog posts, we’ll go into more detail about what all that means. For today, let’s start out by looking at a few key ways you can modernize your asset monitoring processes to make them more reliable and efficient. These three focus areas are a best practice for any asset manager.

1. Make the most of your existing sensors

The internet of things (IoT) promises ultimate connectivity across all things in every business environment, including the individual parts of the mechanical systems you manage. This advent of 24/7 monitoring capabilities encouraged facilities to equip mechanical systems with a broad range of sensors. As you know, using sensors can help extend your condition-based maintenance through early detection of events that might impact the reliability and efficiency of your systems.

That’s great—it’s certainly worth gathering relevant data about your systems—but, even putting aside that word “relevant” for a minute (because not all data is relevant, after all) installing sensors takes time and money. There’s not just the cost of the equipment itself, but also the infrastructure needed to make it useful, from wiring the electrical connections (which can be especially expensive in manufacturing and industrial environments) to the more high-tech components, such as the network and IoT software platform you use for collecting and analyzing the sensor data. There’s also the time it takes just to engage your IT team and then figure out where the sensors actually need to go. And don’t forget, fitting new sensors into any hard-to-reach places can pose life safety risks that take longer to mitigate and can run up your budget even further.

The good news? If you have some automation in your current system, you already have a head start. With the right software, you can leverage the data collection capabilities of your existing sensors and apply physics-based machine learning models using a digital twin to yield the results you need. In many environments, you can use this approach to detect and manage a rich set of maintenance conditions with a surprisingly low number of sensors.

By applying this technique and working with us to develop the right solution that meets their needs, our customers transform their condition monitoring and expand coverage while overcoming the typical limitations of cost, life safety, IT project churn, and uncertainty about new sensor placement. By calculating simple algorithms based on known physical principles, we help companies do away with extraneous sensor equipment in places where it’s expensive and problematic to add and maintain.

2. Find faulty sensors more easily

Once you’ve evaluated the sensors in your environment to see how you can do more with less, you need to make sure the sensors you have in place are continuing to add value over time. Assuming a given sensor is providing data that is useful to your systems analysis, you need to keep the sensor operational in ways that ensure that data is accurate.

For most maintenance teams responding to a preventive action request, this entails lots of hands-on physical testing or cross-validation with other sensors. The reality is that most of us don’t have time to do this work proactively, so we end up testing sensors only when we suspect a fault—and that’s usually when something much larger has already gone wrong.

Again, the solution comes down to having the right data and knowing what to do with it. Just as physics-based calculations can help you determine where sensors are unnecessary, similar calculations can tell you whether the data being reported by a sensor is suspected of being inaccurate. Sometimes this is just a warning, and can clue you in to the need for proactive maintenance; and sometimes, when the physics just don’t make sense, it’s a clear sign that a sensor has failed—or else there’s a serious problem with your systems.

As with #1 above, these calculations only work if you’ve scripted your machine learning algorithms to apply basic physical laws, and you have previously mapped your entire constellation of system variables into a central database (digital twin).

3. Weed out the false positives

Having lots of sensors producing data and lots of system rules processing the data leads to lots of alerts going off, calling your attention to supposedly urgent conditions. Some of these are real, but many are not. It’s no surprise to any seasoned asset manager that rules are fallible, and very often alerts come across whose business relevance is basically zero. At Tignis, we refer to these generally as false positives. We also just sometimes call them noise.

Here are the three most typical responses to a false positive alert:

  • “The alert is based on faulty data, which I might or might not recognize as faulty in the moment.”
  • “The alert is based on accurate data, but I’m pretty sure it’s reporting a condition that doesn’t exist.”
  • “The data is accurate, and the condition exists—but, for my business purposes, I just don’t care.”

And actually, “I don’t care” is really the logical response to all of these alerts. You shouldn’t care, because you have more important things to focus on in your day. It’s like having someone run into your office every five minutes with a new, urgent message that actually has no pertinence to the business, and all you want to do is do your work.

You can say enough’s enough, and shut and lock the door so that person can’t run in any more. But then, what happens when they’re no longer crying wolf, and there actually is a serious problem?

Such is the danger of having too much “noise” in your day—it blurs the edges between the things you actually care about and the stuff you don’t. By modernizing your asset monitoring systems to report only relevant alerts, you can be more intentional and clear-headed about the alerts you respond to, and more impactful in your job.

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