Management of RAM Fault for Safety Applications 2019-26-0365
As safety compliance (ISO 26262) has become a norm for automotive embedded software development, the OEMs and Tier1s are pushed to follow the safety guidelines during hardware and software development process. This demands for microcontroller/software not only to detect internal faults but also to find the exact root cause of the failure and have a self-healing mechanism.
In this article, the injection, detection and safety action of RAM fault will be addressed using specific microcontroller and Vehicle Application.
This article will focus on:
1. RAM fault injection, detection and safety action which will cover ISO-26262 functional safety from QM to ASIL-D.
2. RAM test implementation using AUTOSAR Complex Device Driver which contains the complete RAM faults detection and their test manager implementation in accordance with ISO-26262.
3. RAM test discussion will be on memory separations and the algorithm selection, different kinds of RAM errors and the correction mechanism, diagnostics coverage, single and continuous test.
4. Conclusion based on achieved diagnostics coverage, Single point fault metric and latent point fault metric.
Anavaratha Selvan Ganapathi
Symposium on International Automotive Technology 2019