Safety Element out of Context - A Practical Approach

2012-01-0033

04/16/2012

Event
SAE 2012 World Congress & Exhibition
Authors Abstract
Content
ISO 26262 is the actual standard for Functional Safety of automotive E/E (Electric/Electronic) systems. One of the challenges in the application of the standard is the distribution of safety related activities among the participants in the supply chain.
In this paper, the concept of a Safety Element out of Context (SEooC) development will be analyzed showing its current problematic aspects and difficulties in implementing such an approach in a concrete typical automotive development flow with different participants (e.g. from OEM, tier 1 to semiconductor supplier) in the supply chain. The discussed aspects focus on the functional safety requirements of generic hardware and software development across the supply chain where the final integration of the developed element is not known at design time and therefore an assumption based mechanism shall be used. The inherent ambiguity deriving from such assumption based distribution of requirements also makes the responsibility allocation on the development chain difficult.
This paper also proposes improvements and extensions of the SEooC concept which may lead to an increased usability of the approach in modern development lifecycles. In order to demonstrate and evaluate the proposed modifications of the SEooC approach, a concrete example (the implementation of a generic AUTOSAR complex device driver for electric motor control) will be described in the paper. The chosen case study is generic and representative for a large spectrum of functional safety relevant automotive applications like Electric Power Steering, Dynamic Steering, X-by-Wire, etc.
Meta TagsDetails
DOI
https://doi.org/10.4271/2012-01-0033
Pages
11
Citation
Schneider, R., Brandstaetter, W., Born, M., Kath, O. et al., "Safety Element out of Context - A Practical Approach," SAE Technical Paper 2012-01-0033, 2012, https://doi.org/10.4271/2012-01-0033.
Additional Details
Publisher
Published
Apr 16, 2012
Product Code
2012-01-0033
Content Type
Technical Paper
Language
English