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Automatic Decomposition and Allocation of Safety Integrity Level Using System of Linear Equations

Authors:
Mohamed Slim Dhouibi
Jean-Marc Perquis
Laurent Saintis
Mihaela Barreau

Keywords: ISO 26262, ASIL Decomposition

Abstract:
In ISO-26262, the Automotive safety integrity level (ASIL) represents the degree of rigour that should be applied in the development, implementation and verification of a requirement in order to reduce and control the risk in the final product. The ASILs are allocated to the safety requirements which are inherited by the subsystems and components in a hierarchical approach. During the allocation process, the safety requirements could be decomposed over redundant elements. It is referred to as ASIL decomposition and is an important feature, as it helps to reduce the complexity and the development cost of the design. The decomposition could lead, however, to different allocations. In this paper, we propose an approach to find all the possible allocations in order to assist the analyst in reaching the optimal allocation.

Pages: 1 to 5

Copyright: Copyright (c) IARIA, 2014

Publication date: February 23, 2014

Published in: conference

ISSN: 2308-3700

ISBN: 978-1-61208-321-6

Location: Nice, France

Dates: from February 23, 2014 to February 27, 2014