Requirement Ebenen

DO-178B/C, ISO 26262, IEC 61508: How many level of Software requirements are necessary and useful?

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

In my daily projects in the automotive and industrial automation industry I’m continually confronted with the following question: How many levels of software requirements have to be written? That’s an interesting question, especially if we take the aerospace industry also into account. Software requirement level are a key topic if you want to improve your […]

FMEA

FMEA – A powerful method, but not for software!

Veröffentlicht 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 […]

ISO 26262: Fault Injection Test – Do you really need it?

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The ISO 26262 defines the fault injection test as a test method for the system integration and unit test level (ISO 26262-4 [System] Tables 5, 8, 10, 13, 15, 18; ISO 26262-5 [Hardware] Table 11; ISO 26262-6 [software] tables 10, 13). This method has certainly a large part in the implementation of a possible error-free […]

EN50128 konfigurierbare Systeme

EN 50128 Functional Safety in the railway industry

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The EN 50128 Functional Safety standard describes together with the EN 50126 and EN 50129 the functional safety in the railway industry. These standards implement the IEC61508 for this industry. The peculiarity of the rail industry with regard to functional safety is that the systems are to be certified by an governmental authority (in Germany […]

Agile development methods and functional safety – An unbridgeable contrast? (Part 2)

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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 […]