TY  - CONF
A1  - Braun, Jürgen
A1  - Mottok, Jürgen
T1  - Fail-Safe and Fail-Operational Systems safeguarded with Coded Processing
T2  - 2013 IEEE EUROCON - International Conference on Computer as a Tool,  Zagreb, Croatia, July 1-4, 2013
N2  - Safety has the highest priority because it helps contribute to customer confidence and thereby ensures further growth of the new markets, like electromobility. Therefore in series production redundant hardware concepts like dual core microcontrollers running in lock-step-mode are used to reach for example ASIL D safety requirements given from the ISO 26262. Coded processing is capable of reducing redundancy in hardware by adding diverse redundancy in software, e.g. by specific coding of data and instructions. A system with two coded processing channels is considered. Both channels are active. When one channel fails, the service can be continued with the other channel. It is imaginable that the two channels with implemented coded processing are running with time redundancy on a single core or on a multi core system where for example different ASIL levels are partitioned on different cores. In this paper a redundancy concept based on coded processing will be taken into account. The improvement of the Mean Time To Failure by safeguarding the system with coded processing will be computed for fail-safe as well as for fail-operational systems. The use of the coded processing approach in safeguarding failsafe systems is proved.
KW  - fail-safe
KW  - fail-operational
KW  - fault-tolerant
KW  - failure probability
KW  - coded processing
KW  - Safely Embedded Software
KW  - SES
KW  - safety measure
KW  - ISO 26262
KW  - electromobility
KW  - Mean Time To Failure
KW  - MTTF
KW  - reliability
KW  - diversity
Y1  - 2021
UR  - https://opus4.kobv.de/opus4-oth-regensburg/frontdoor/index/index/docId/1196
SN  - 978-1-4673-2231-7
SP  - 1878
EP  - 1885
ER  -