ISO 26262 Safety Case – Success factors: management and traceability!

Veröffentlicht Veröffentlicht in Automotive, Englische Blogs

The term Safety Case is used in the automotive industry and railway industry (EN50129). The following article focuses on the automotive industry. Project experience shows that the achievement of a proven functionally safe system is complex and extensive. This is particularly true if the development of a product is spread over several companies. I will […]

Requirement and Test Traceability – Any added value?

Veröffentlicht Veröffentlicht in Englische Blogs, Requirements Engineering eng, Uncategorized

Requirement and Test Traceability: Think about the following situation: You are near the end of your safety-related project and you have established traceability between all the project artifacts. In an audit (e.g. Internal Quality Assurance, Customer, External Authority) you have to demonstrate which software requirements are developed from which System Requirements. Each software requirement is […]

EN 50128 and EN 50657 support tools

Veröffentlicht Veröffentlicht in Englische Blogs, Railway

Chapter 6.7 of EN 50128 and EN 50657 support tools and languages defines requirements for software tools that are used in a safety-relevant development process. Project team members in safety projects discuss the content and meaning of this chapter again and again. The following article summarizes the essential requirements and derives a practical guide for […]

Requirement completeness using data- and control flow analysis

Veröffentlicht Veröffentlicht in Englische Blogs, Functional Safety

Carrying out a data- and control flow analysis is required in almost all functional safety standards (ISO 26262-6 Table 7 Measures 1f/g, DO 178C Table A-7 Measure 8 and EN 50128, EN 50657Table A19 Measures3/4). In comparison to other measures, the data and control flow analysis causes a lot of questions, when it comes to […]

The non-intrusive measurement of structural coverage!

Veröffentlicht Veröffentlicht in Englische Blogs, Functional Safety

The measurement of structural source code coverage is nowadays defined as an important procedure in many functional safety standards. The non-intrusive measurement of structural coverage offers completely new possibilities in the future. For a long time, it was industry-wide consensus that structural coverage should and could only be determined in so-called white-box tests. In many […]

IEC61508

Functional Safety Basic Standard IEC 61508

Veröffentlicht Veröffentlicht in Englische Blogs, FuSaBasicStandard

The Functional Safety Basic Standard IEC 61508 is often referred to as the mother of all functional safety standards. This standard was introduced in 1998 with the intention of defining cross-industry processes and methods to be used for safety-relevant electrical, electronic and programmable electronic systems. IEC61508 is applied if no industry-specific standards are available for […]

IEC61508

IEC 61508 – Tool qualification – When? Why? How?

Veröffentlicht Veröffentlicht in Englische Blogs, FuSaBasicStandard

The term tool qualification triggers an unpleasant feeling and uncertainty in many people who deal with functional safety. IEC61508 requires the certification of software tools used for software development. Other functional safety standards also require similar measures. Unfortunately, however, the same terms are not always used. IEC61508 uses the term „certified tools“, often the term […]

RTCA DO 178C

RTCA DO 331 Model-Based Development and Verification in aerospace

Veröffentlicht Schreibe einen KommentarVeröffentlicht in Aerospace, Englische Blogs

With the enhancement of the RTCA DO 178B to the RTCA DO 178C, four so-called supplements have also been developed. The RTCA DO 331 Model-Based Development is one of these four supplements and describes the requirements for model-based development and verification in aerospace. The following article provides answers to the following questions: How is the […]

Functional safety and pragmatism is that possible?

Veröffentlicht Schreibe einen KommentarVeröffentlicht in Englische Blogs, Functional Safety

Many people associate with the implementation of functional safety, a lot of formalism, and unnecessarily extensive documentation and many processes with a high proportion of theoretical framework. And yes, such projects are existing very often and in every industry. My experience shows that such projects are not very powerful when measured by the real implementation […]