Fast Functional Safety Verification for Distributed Automotive Applications During Early Design Phase

Both response time and reliability are important functional safety properties that must be simultaneously satisfied learning from the automotive functional safety standard ISO 26262. Safety verification pertains to checking if an application meets a safe set of design specifications and complies with regulations. Introducing verification in the early design phase not only complies with the latest automotive functional safety standard but also avoids unnecessary design effort or reduces the design burden of the late design optimization phase. This study presents a fast functional safety verification (FFSV) method for a distributed automotive application during the early design phase. The first method FFSV1 finds the solution with the minimum response time under the reliability requirement, and the second method FFSV2 finds the solution with the maximum reliability under the response time requirement. We combine FFSV1 and FFSV2 to create union FFSV (UFFSV), which can obtain acceptance ratios higher than those of current methods. Experiments on real-life and synthetic distributed automotive applications show that UFFSV can obtain higher acceptance ratios than their existing counterparts.