移频脉冲轨道电路在动车所中的应用  

Application of Frequency Shift Pulse Track Circuit in EMU Workshop

作　　者：孔明祥 Kong Mingxiang

机构地区：[1]东南沿海铁路福建有限责任公司,福州350000

出　　处：《铁路通信信号工程技术》2022年第S01期76-79,共4页Railway Signalling & Communication Engineering

摘　　要：动车所常用25 Hz轨道电路叠加电码化或不对称高压脉冲轨道电路叠加电码化的方式。在应用过程中发现,25 Hz轨道电路叠加电码化方式存在分路不良现象;使用不对称高压脉冲轨道电路后,叠加电码化则会存在掉码现象。ZPW-2000A·TM移频脉冲轨道电路同时含有高压脉冲信号和移频信号,脉冲信号可以有效改善使用25 Hz轨道电路分路不良问题,移频信号同时给机车发码,解决了高压脉冲轨道电路叠加电码化机车掉码问题。At Present,the superposition of 25Hz track ircuit and coded track circuit or asymmetrical high voltage pulse track circuit and coded track circuit is commonly used in EMU workshop.In the process of application,it is found that there is poor shunting in use of 25Hz track circuit superposed coded mode,and the code missing occurs in use of asymmetric high voltage pulse track circuit superposed coded mode.The ZPW-2000A·TM frequency shift pulse track circuit contains both high voltage pulse signal and frequency shift signal.The pulse signal can eff ectively improve poor shunting problem of the 25Hz track circuit.The frequency shift signal sends codes to the locomotive at the same time to solve the code missing problem of the high voltage pulse track circuit superposed coded mode.

关 键 词：动车所 不对称高压脉冲 移频脉冲 轨道电路 

分 类 号：U284.2[交通运输工程—交通信息工程及控制]