Fotolia_115428091_M

Compiler for safety critical software – What needs to be done?

Veröffentlicht am Schreibe einen KommentarVeröffentlicht in DO178 eng, Englische Blogs, Functional Safety

The compiler is the central „tool“, which is required for every software development. It forms the link between the human-readable high-level source code (e.g., C and C ++) and the machine code, interpretable for the hardware processor. For the development of safety critical software according to relevant functional safety standards such as ISO26262 (car), EN50128 […]

Fotolia_73259178_S

Freedom of Interference – The practice in Industry!

Veröffentlicht am Schreibe einen KommentarVeröffentlicht in DO178 eng, Englische Blogs, Functional Safety

In the last blog (June 2017), I explained the principle of Freedom of Interference. The example used was based on the automotive industry and the ISO26262. Now I would like to consider Freedom of Interference with respect to the industry sectors railway, aviation and automotive and share my industry experiences with you.

Fotolia_11463533_S

Challenges when determining the structural source code coverage on the target!

Veröffentlicht am Schreibe einen KommentarVeröffentlicht in DO178 eng, Englische Blogs, Functional Safety

The proof of a 100% structural source code coverage is required by almost all functional safety standards (IEC61508, ISO26262, DO 178C, etc.). In the individual SIL / ASIL levels, only the type of source code coverage is differentiated. Essentially, the Statement Coverage (low SIL / ASIL Level), the Branch Coverage and the MC / DC […]

cropped-DI1A6017-1

Good safety development process – What is it?

Veröffentlicht am Schreibe einen KommentarVeröffentlicht in DO178 eng, Englische Blogs, Functional Safety

IEC 61508, ISO26262, DO 178C, ISO 25119: Have you ever encountered these abbreviations in your professional life? If so, there is a high probability that you are already implementing functional safety projects in your company or that you are entering the market in the near future. Perhaps you have already made the experience, or at […]

Bausteine

Tool Qualification – The phantom pain of functional safety (part 1)!

Veröffentlicht am 1 KommentarVeröffentlicht in Englische Blogs, Functional Safety

Many companies and project teams that carry out projects for the first time in the field of functional safety have the impression that the topic of tool qualification is critical to success and involves a great deal of effort. Although this issue is, of course, important and also involves a certain cost effort, the subject […]

Fotolia_131482412_S

Structural source code coverage and Requirements – Is there any dependency?

Veröffentlicht am Schreibe einen KommentarVeröffentlicht in Englische Blogs, Functional Safety, Requirements Engineering eng, Validation and Verification

If you are newly engaged in the area of functional safety, then you will encounter fairly quickly the terms “structural source code coverage” and “requirements”. The specification of technical systems by requirements is, of course, also common in non-safety-critical areas. By contrast, the subject structural source code coverage is almost unknown outside safety-critical projects. In […]

Fotolia_74952370_S

FMEA – A powerful method, but not for software!

Veröffentlicht am 2 KommentareVeröffentlicht in Englische Blogs, Functional Safety, Top 5 eng

In the functional safety, there is a method which is always used – the FMEA (Failure Mode Effects Analysis). In particular, on system and hardware level the FMEA supports systematic analysis. There are also variants such as the FMECA and the FMEDA. In this blog post I use only the term FMEA. In project practice […]

Agile_VV_eng

Functional safety and agile development methods – An unbridgeable contrast? (Part 2)

Veröffentlicht am Schreibe einen KommentarVeröffentlicht in Englische Blogs, Functional Safety, Top 5 eng

In the first part of the blog, we have considered the principles of agile development and the functional safety development. Based on these principles, I want to debate possible areas of conflict in this blog, if you want develop agile in functional safety projects. As well, I want to give an idea about the opportunities […]

Part1_Eng_Picture

Functional safety and agile development methods – An unbridgeable contrast? (Part 1)

Veröffentlicht am 1 KommentarVeröffentlicht in Englische Blogs, Functional Safety

As a motivation for this blog, the following questions served me: Do you develop software to agile methods and must meet functional safety requirements in future? Under which conditions does it work? Do you develop safety-critical embedded systems in industries such as: railway, aeronautics, automotive, medical technology and automation technology? Is it possible to use […]