Embedded controllers and digital signal processors are increasingly being used in automotive safety critical control systems. Controller integrity is a significant concern in these systems. Over the past decade, several techniques have been published about controller safety and integrity verification. These techniques include: single processor with watchdog, dual processors, dual core processor, and asymmetric processor (intelligent watchdog). Each of these techniques have benefits, however, many new non-distributed safety-critical systems are applying the asymmetric processor technique to help verify controller integrity.This paper discusses an overview of five controller integrity techniques, and then provides a detailed discussion of an asymmetric processor approach. This paper presents two different options within the asymmetric processor approach.
Controller Integrity in Automotive Failsafe System Architectures
Sae Technical Papers
SAE 2006 World Congress & Exhibition ; 2006
2006-04-03
Aufsatz (Konferenz)
Englisch
Controller integrity in automotive failsafe system architectures
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