上海轨道交通2号线车地通信环线与应答器的电气兼容性分析与测试

Analysis and Test of the Compatibility between TWC Loop and Beacon on Shanghai Rail Transit Line 2

上海轨道交通2号线增购31列车,采用的是CBTC (基于通信的列车控制)系统,同时兼容既有2号线TBTC(基于轨道电路的列车控制)系统,即是一套兼容性车载信号系统。此系统既要使用既有的车站TWC(车地通信)环线实现车地通信,也要在车站加装应答器实现CBTC级的停站精度。从理论分析、静态测试以及动车测试三个层面,对TWC环线与应答器的电气兼容性进行分析,确认应答器对既有信号系统不会产生功能影响及电气干扰。

The newly purchased 31 trains for Shanghai rail transit Line 2 adopt a compatible on-board signal system,which is compatible with CBTC system and the existing TBCT system of Line 2.This system uses the existing TWC(train to wayside communication)loop to realize train-to-ground communication,and installs the beacon to ensure the stop accuracy at CBTC level.The compatibility between TWC loop and beacon is analyzed from theoretical analysis,static test and motor car test three levels,so as to confirm that the beacon will not influence the existing signal system and interfere with the electronic functions.