Design of a Testing Tool Based on Fault Injection for Functional Safety

Abstract

ISO 26262 provides testing requirements for functional safety development and testing to mitigate unacceptable risks arising from system functional failures. Fault injection plays a vital role in assessing system robustness and validating the efficacy of safety mechanisms. This paper explores the fault types and implementation process of fault injection in the context of functional safety confirmation and validation. A fault injection board specifically designed for electrical faults is developed and integrated with Controller Area Network (CAN) messages to verify the effectiveness and correctness of safety mechanisms. The proposed approach offers the advantages of flexible switching and ease of control, making it a valuable tool in ensuring the functional safety of automotive systems.