Assisted Assignment of Automotive Safety Requirements

ISO 26262, a functional-safety standard, uses Automotive Safety Integrity Levels (ASILs) to assign safety requirements to automotive-system elements. System designers initially assign ASILs to system-level hazards and then allocate them to elements of the refined system architecture. Through ASIL de...

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Bibliographic Details
Published inIEEE software Vol. 31; no. 1; pp. 62 - 68
Main Authors da Silva Azevedo, Luís, Parker, David, Walker, Martin, Papadopoulos, Yiannis, Esteves Araujo, Rui
Format Journal Article
LanguageEnglish
Published Los Alamitos IEEE 01.01.2014
IEEE Computer Society
Subjects
Allocations
ASIL
ASIL automation
ASIL decomposition
Automobile safety
Automotive components
Automotive engineering
Automotive Safety Integrity Levels
Batteries
Computer architecture
Decomposition
Design engineering
Designers
Embedded computer systems
functional safety
Hazards
HiP-HOPS
Integrity
ISO 26262
ISO standards
Resource management
Safety
Safety standards
Software engineering
Software quality
Studies
Systems design
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Summary:ISO 26262, a functional-safety standard, uses Automotive Safety Integrity Levels (ASILs) to assign safety requirements to automotive-system elements. System designers initially assign ASILs to system-level hazards and then allocate them to elements of the refined system architecture. Through ASIL decomposition, designers can divide a function's safety requirements among multiple components. However, in practice, manual ASIL decomposition is difficult and produces varying results. To overcome this problem, a new tool automates ASIL allocation and decomposition. It supports the system and software engineering life cycle by enabling users to efficiently allocate safety requirements regarding systematic failures in the design of critical embedded computer systems. The tool is applicable to industries with a similar concept of safety integrity levels.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0740-7459
1937-4194
DOI:10.1109/MS.2013.118