Design and verification of VCU system based on ISO26262

Abstract

According to ISO26262 standard, the functional safety analysis of the pure electric vehicle’s concept stage of Vehicle Control Unit (VCU) was carried out. From this, the safety goals and ASIL levels of the VCU are determined. According to the safety analysis method, the functional safety requirements of the VCU at the vehicle level are obtained. At the hardware architecture level, the functional safety design of the VCU’s microcontroller module, storage module, and power supply module is carried out to meet the functional safety development requirements. Carefully consideration of software failures that may occur during VCU software development. These include software architecture design, safety-critical code/program flow monitoring, change management, and safety-critical variables. The fault injection test of the VCU demonstrates the feasibility of this technology.