Research and Practice on Verification Test of Intended Functional Safety Awareness System Based on HWA System

With the development of driving automation technology, more and more vehicles are equipped with intelligent driving functions. The Ministry of Industry and Information Technology (MIIT) issued in 2021 “Intelligent connected Vehicle production Enterprises and Product Access Management Guide (Trial)” (draft for comment) proposed that “intelligent connected vehicle products should meet the process assurance requirements of functional safety, intended functional safety and cybersecurity.” As the “eyes” of the HWA functional system, the perception system, due to its complexity, may still have safety problems caused by functional limitations such as sensors or algorithms in the absence of faults. Therefore, the intended functional safety analysis and verification methods for the perception system are particularly important to ensure that the system does not have unreasonable safety risks. This paper describes the analysis method of the intended functional safety function deficiency, and puts forward the test verification strategy and test verification method of known hazard scenarios. Taking the HWA system as an example, this paper analyzes the hazard scenario of the HWA perception system based on camera and millimeter wave radar, conducts testing and verification evaluation for typical hazard scenarios, identifies the insufficient function of the HWA perception system, and puts forward functional modification suggestions to ensure that the perception system does not have unreasonable risks.