城市轨道交通ATP车载设备测试用例生成方法

A Test Case Generation Method of On-Board ATP Equipment in Urban Rail Transit

根据对城市轨道交通ATP车载设备功能的分析,搭建了模拟车辆外部接口的城市轨道交通ATP车载设备测试环境,确定了测试ATP车载设备的10个安全输入参数和7个非安全输入参数。基于输入参数建立了可变强度覆盖矩阵,并利用回溯搜索算法优化出由20个用例组成的ATP车载设备测试用例集。测试结果表明,给出的测试用例只有穷举测试法的1%,而测试的有效性达90%以上,能够对ATP车载设备功能进行高效和可靠的测试,并大大降低了测试成本,从而验证了ATP车载设备测试用例生成方法的有效性。

Based on analyzing the functions of on-board automatic train protection（ATP） equipment in urban rail transit,the simulative testing environment of vehicle external interfaces of on-board ATP equipment for urban rail transit was established and 10 security input parameters and 7 non-security input parameters for testing on-board ATP equipment were defined.According to input parameters,the variable strength covering array was built and the test case collection of on-board ATP equipment,which was made up of 20 test cases,was optimized by using backtrack-based search algorithm.The testing results show that the given test cases only take 1% of the exhaustive test cases,but the test validity is over 90%.It can make effective and reliable test on the functions of on-board ATP equipment and largely cut test cost.Consequently,the validity of the test case generation method of ATP on-board equipment is verified.