Automotive Safety Critical System Design based on AUTOSAR

Abstract

Automotive embedded systems are a typical safety-critical system. If safety system encounters an abnormal behavior during system operation, it may cause serious injury to people. Therefore, it should be designed to detect faults and external intrusions from the design phase. In addition, software in automotive system is becoming complex and important as autonomous vehicle and electric car technologies are applied. In order to design such complex and safety related software, AUTOSAR (AUTomotive Open Software Architecture) software platform should be applied and the safety requirements of ISO26262 should be satisfied. When designing safety-critical system, there are three basic considerations for detecting faults and external intrusions such as memory protection, timing protection and communication protection. In this study, we introduce the software safety design of the automotive brake system which is one of the most safety critical system.