基于ISO 26262的车道偏离预警系统概念设计与仿真

以道路车辆功能安全规范标准ISO 26262为准则，对汽车的车道偏离预警系统（LDWS）进行了概念设计。首先分析了ISO 26262功能安全规范概念阶段的活动内容，并在此基础上，完成车道偏离预警系统的项目定义、危险分析和评估，设计了功能安全概念的相关工作，确定了功能安全等级和安全目标。最后搭建了UML仿真模型对LDWS概念设计阶段进行仿真测试，测试结果表明此设计能够满足ISO 26262规范标准，实现了车道偏离预警系统的功能安全概念设计，对车道偏离预警系统的安全开发具有指导意义。

Conceptual design and simulation of lane departure warning system based on ISO 26262

Taking the road vehicles functional safety standard ISO 26262 as criterion, the conceptual design on lane departure warning system (LDWS) of vehicles was conducted. Firstly, the contents of event at conceptual phase of functional safety standard ISO 26262 were analyzed. On this basis, the project definition, risk analysis and assessment of LDWS were completed, then the relevant work of functional safety concept was designed, and the functional safety level and target were determined. Finally, an UML simulation model was established to conduct the simulation test at the conceptual design phase of LDWS. The test results showed that the design can satisfy the ISO 26262 standard. The functional safety conceptual design of LDWS was realized, which has guiding significance for the safe development of LDWS.