基于VT System的诊断自动化测试平台的实现

摘要

With the continuous improvement of automotive technology, more and more ECU are used in vehicles, which makes the ECU diagnostic testing an increasingly complex and essential job. Based on Hardware in the Loop (HIL) testing concept, by using Vector’s bus and diagnostic verification tool chain and VT System board, ECU and its peripherals are simulated and the faults diagnosis are processed. External input and output of the module is tested before loading the measured sample, then all the electrical and electronic faults are reproduced fast in real vehicle environment. The final automated testing system is implemented by preparation of test cases including testing for ECU diagnostic protocol, network fault code and electrical fault code.%由于现代汽车技术不断提高，越来越多的电子控制器（ECU）应用在汽车上，这就使得ECU的诊断测试越来越复杂和重要。基于硬件在环（HIL）的测试理念，运用德国Vector公司的总线与诊断验证工具链，在ECU诊断测试过程中使用VT System硬件板卡模拟ECU的诊断故障外设；在被测样件装车之前对ECU的外部输入输出进行测试，快速重现实车中所有的电子电气故障。通过测试用例的编写，最终实现对ECU诊断协议、网络故障码、电气故障码的自动化测试。