离去区段CTCS-3级向CTCS-2级列控系统等级转换测试用例研究  

Research on Test Case of CTCS-3 to CTCS-2 Level Transition on Departure Section

作　　者：雷群 LEI Qun

机构地区：[1]北京华铁信息技术有限公司,北京100081

出　　处：《铁道通信信号》2024年第12期26-32,共7页Railway Signalling & Communication

基　　金：中国铁道科学研究院集团有限公司重大项目(2023YJ312)。

摘　　要：动车组在高速铁路运行时,应能根据线路的列控系统等级自动切换车载设备的控制等级而不引发紧急制动,因此在工程线路开通前,设计测试用例,对离去区段上设置有CTCS-3向CTCS-2等级转换点的特殊线路场景进行针对性的系统集成测试十分必要。在CTCS-3级向CTCS-2级转换过程中,车载设备是否触发制动受许多外部条件影响,如车载设备类型、CTCS-3级与CTCS-2级行车许可中描述的最高允许速度是否存在较大差异等。利用场景举例法,研究等级转换点所在离去区段长度不同时的测试用例设计方案,确保覆盖CTCS-3级与CTCS-2级行车许可存在最不利差异的场景。所研究的测试用例可最大化地在测试阶段发现车载设备紧急制动问题,并已在工程建设中得到验证,对集成测试工作开展有一定指导意义。When an EMU train is running on high-speed railway,it should be able to automatically switch the control level of onboard equipment according to the train control system level of the line without causing emergency braking.Therefore,it is necessary to design test cases and carry out targeted system integration tests for special line scenes with CTCS-3 to CTCS-2 level transition points on the departure section before a project line is opened.In the process of transition from CTCS-3 to CTCS-2,whether the onboard equipment triggers braking is affected by many external conditions,such as the type of onboard equipment and the existence or inexistence of big differences between the maximum permitted speeds described in CTCS-3 and CTCS-2 movement authorities.This paper studies the test case design schemes with lengths of the departure section where the level transition point is located being different by illustrating scenario examples covering the most unfavorable differences between CTCS-3 and CTCS-2 movement authorities.The test cases formed in the research can help identify emergency braking problems of onboard equipment in the test stage at a maximum extent.They have been verified in engineering construction and will contribute to guiding the development of integration testing.

关 键 词：CTCS-3级列控系统 CTCS-2级列控系统 离去区段 行车许可 等级转换 紧急制动 临时限速 

分 类 号：U238[交通运输工程—道路与铁道工程] U284.48