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Showing posts with the label Methods

ASIL Certification for HW Components and HW Evaluation

In our previous post , we introduced the topic of ASIL certification for HW elements. In this article, we will give you an idea of what is done as part of ASIL Certification. We will then introduce the concept of HW Evaluation , how it is to be done and what are the challenges in doing it.   Note: ISO26262 does not talk about "Certification" and what is the way to "certify" a component.  ASIL Certification means that a component was developed according to ISO26262, it was audited by Independent Safety Auditors and the Auditor confirmed that the Component meets the qualitative and quantitative expectations for that ASIL level. The Idea behind “ASIL Certification” Basics first. How is Safety is achieved in an Item? By sufficiently preventing Systematic failures - by good design and following ASIL development processes By introducing safety mechanisms to detect random hardware failures and achieving the required quantitative Hardware Metrics for that ASIL level.  Let u

Systematic faults and failures

The ISO26262 provides a bookish definition for Systematic faults and failures. In this post, we have explained our understanding of what these mean. To do so, we have described the following aspects: An easy way to understand systematic faults & systematic failures Possible scenarios in which systematic faults could occur Challenges with complete elimination of systematic failures Probability of systematic failures An easy way to understand systematic faults & systematic failures In simple terms we would like to call Systematic faults as "Method or Process faults”. It is any fault in the way of applying methods or processes whose consequent failure shows up in a deterministic way. This consequent failure is what is called a Systematic failure. What do we mean by "deterministic"? It means that if the same fault is injected into the system 'n' no of times under specific conditions, the same failure will occur every time. The failure is not really tied to th