System Level Risk Analysis for Immunity in Automotive Functional Safety Analyses

At present, automotive functional safety and EMC engineering are largely carried out independently. Current EMC regulations aim to avoid unwanted disturbances by setting appropriate immunity threat levels and emission limits. However, with the rapidly evolving technology and complexity of automotive systems, the limits identified in standards may no longer be appropriate. Hence the identification and assessment of EMC-related risks are becoming increasingly necessary. This paper outlines the tools used to support risk analysis for functional safety and presents initial proposals for a graphical method to better align the analysis of EMC risks and functional safety.