An Automated Testing Method for UDS Protocol Stack of Vehicles

摘要

An automated testing method for vehicles' UDS (Unified Diagnostic Service) protocol stack based on CAN bus is presented in this article. According to different diagnostic services, which are specified in ISO 14229-1, a strategy of generating test cases is designed by using a comprehensive method, which is mainly based on orthogonal design method. Then a test tool is developed in Delphi development environment. It can configure test parameters, import standard ODX (Open Diagnostic Data Exchange) database files and generate test scripts automatically. Finally, these scripts can be executed in another test environment directly and get test reports automatically. During the whole test process, users do not need to study the details of the test specification and write test scripts, or do the test steps manually. They can test the target stack just by configuring test tools and click 'Execute'. This automated test method can improve the efficiency of this UDS protocol stack test, and reduce the workload of developers.