System Design and Verification for a Safety Related Integrated Sensor

Paper #:
  • 2015-01-0234

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-0234
Citation:
Sacco, V., Poezart, M., and Close, G., "System Design and Verification for a Safety Related Integrated Sensor," SAE Int. J. Passeng. Cars – Electron. Electr. Syst. 8(2):320-324, 2015, https://doi.org/10.4271/2015-01-0234.
Pages:
5
Abstract:
This paper presents the engineering aspects of an integrated, monolithic, angular position sensor to be developed as Safety Element out of Context (SEooC) in accordance with ISO-26262[1]. The sensor is a Hall-effect-based angular sensor, used in a wide range of automotive, safety-critical applications such as accelerator pedal position, throttle-valve position, or any other application requiring the accurate measurement of the angular position of a mechanical part. The assumed safety requirements allocated to this sensor have to be developed according to ASIL-C.The mapping between technical safety requirements and architecture elements, as conveyed by the technical safety concept, will be first presented. Failure mode effect and Diagnostic Analysis (FMEDA)[2], supporting the safety mechanism specification will be discussed next; here a safety mechanism selection guide is also proposed. The paper will finally show how this safety-centric analysis is integrated into a classic mixed-signal integrated Circuit verification methodology.
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