地面电子单元LEU“C”接口监测方案设计  

Monitoring Plan Design of Interface C of Lineside Electronic Unit(LEU)

作　　者：潘长清[1] 

机构地区：[1]中铁检验认证中心,北京100081

出　　处：《铁路通信信号工程技术》2017年第5期9-11,共3页Railway Signalling & Communication Engineering

摘　　要：描述中国高铁列控系统中地面电子单元LEU的C接口信号特性的一种监测方案。通过对LEU的C接口信号特性的监测,不仅可以发现LEU的C接口输出信号幅度频率的异常、输出报文数据位的错误,同时还能发现C接口长距离传输电缆的开路和短路故障。通过C接口监测,LEU可以向列控中心TCC实时报告C接口故障状态,对及时维修更换故障设备、提高铁路运营效率具有重要意义。同时C接口监测数据也存储在LEU本地CF卡中,为事后故障分析提供详细的原始记录,大大提高了LEU的可维护性。This paper describes a plan for monitoring the signaling characteristics of Interface C of Lineside Electronic Unit （LEU） in the train control system for Chinese high speed railways. By adopting this plan, it can not only find out the abnormal conditions of output signals amplitude frequency and output telegram data bit faults of Interface C, but also the open/short circuit faults of long-distance transmission cables of interface C. By monitoring interface C, LEU can send the report of the faults status to the Train Control Center （TCC） in real time, and the report will play an important role in the timely maintenance and replacement of failure equipment and in improving the efficacy of railway transportation. Besides, interface C monitoring data is stored in the local CF card of LEU, in order to provide detailed original records for post-accident analysis and greatly increase LEU maintainability.

关 键 词：LEU C接口 信号特性监测 电缆开短路监测 

分 类 号：TP334.7[自动化与计算机技术—计算机系统结构]