基于频移键控信号的车地无线通信质量检测方法研究  

Research on Quality Detection Method of Wireless Train-Wayside Communication Based on FSK Signal

作　　者：曹振丰 陆鑫源 杨明来 CAO Zhenfeng;LU Xinyuan;YANG Minglai(Faculty of Railway Transportation,Shanghai Institute of Technology,201418,Shanghai,China;不详)

机构地区：[1]上海应用技术大学轨道交通学院,上海201418 [2]上海轨道交通维护保障有限公司通号分公司,上海200002

出　　处：《城市轨道交通研究》2021年第8期145-149,155,共6页Urban Mass Transit

基　　金：上海申通地铁集团有限公司项目(JS-KY12R014-1)。

摘　　要：车地通信系统的通信质量直接影响线路的正常运营。提出了基于频移键控信号的车地通信质量定量检测方法,通过对频移键控信号的解析运算,对比分析电压幅值、波形失真及误码率等参数,判定轨旁车地通信的通信质量。上海轨道交通2号线的实测结果表明:该检测方法能检测在连续发送模式下的列车精准停车定位单向通信质量,并对故障点进行告警,实现了车地通信质量技术指标的定量分析,提高了故障处理的准确性和检测效率。The communication quality of TWC(train-wayside communication)system directly affects the normal operation of lines.A quantitative detection method of TWC based on FSK signal is proposed.Through analyzing and calculating FSK signal,comparing and analyzing the parameters of voltage amplitude,waveform distortion and symbol error rate,the communication quality of wayside TWC system is estimated.The field test results of Shanghai Rail Transit Line 2 show that the method can detect one-way communication quality of trains at precise stop positioning in CTM(continuous transmission mode)and warn fault points,which helps to realize the quantitative analysis of TWC quality technical indicators,improving detection efficiency and fault treatment accuracy.

关 键 词：城市轨道交通 车地通信 移频键控 信号检测 

分 类 号：U231.7[交通运输工程—道路与铁道工程]