Implementing ISO 26262-5: A guide to Functional Safety for Product Development at Hardware Level
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Mobility engineering (MPMOB), MSc
Publicerad
2023
Författare
Dahl, Sofia
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Abstract
The increasing use of electrical and electronics in road vehicles increases the risk for failures
caused by malfunctioning electronic systems. The demand for regulations to ensure functional
safety is therefore a fact. The standard ISO 26262 is produced specifically for the automotive
industry and presents procedures and requirements for manufacturers to follow. This report
focuses on ISO 26262-5 which is product development on hardware level.
Before starting with the ISO 26262-5, the prerequisites need to be defined. The prerequisites
are procedures as Hazard Analysis and Risk Assessment, Fault Tree Analysis and safety goal.
The safety goals are assigned an ASIL-classification depending on the outcome in case of
failure. The ASIL decides the requirements for each safety goal when implementing ISO
26262-5.
A method describing the procedures for implementing ISO 26262-5 is developed. The method
guides the developer through the steps presented in ISO 26262-5 and provides the
requirement to each procedure. For clarity, an example for following the method is provided
to show the context within the procedures.
The example verified that a result can be reached by following the method. The reliability of
the result could not be verified and needs to be compared to a result produced by another
method. Depending on the outcome of the comparison, improvements may be necessary to
ensure the reliability of the method. The main task for manufacturers or developers regarding
the implementation of ISO 26262-5 in the development system is providing the necessary
documentation to follow the method.