地面400MHz数字通信中继系统研究  

Research on Ground 400MHz Digital Communication Relay System

作　　者：王英慧 秦平 Wang Yinghui;Qin Ping

机构地区：[1]中国铁路北京局集团有限公司北京通信段,北京100070 [2]北京锦鸿希电信息技术股份有限公司,北京100070

出　　处：《铁道通信信号》2022年第12期68-72,78,共6页Railway Signalling & Communication

基　　金：中国铁路北京局集团有限公司科技研究开发计划(2020CD04)。

摘　　要：为解决铁路沿线山区、隧道等弱场环境中货车400 MHz列尾通信、工务人员语音通信不畅的问题,研究地面400 MHz数字通信中继系统。基于铁路DMR无线通信应用的原理和列车运行环境的特点,进行需求分析和功能设计,实现400 MHz数字货车列尾通信中继、数字对讲中继、隧道漏缆故障定位监测等功能,并通过现场试验进行了验证。试验结果表明:该系统能够提高货车列尾通信的可靠性,延长施工作业人员的对讲通话距离,降低漏缆维护作业的劳动强度。In order to solve the problem of 400 MHz train-end communication of freight train and poor voice communication of track maintenance personnel in weak field such as mountain areas and tunnels along the railway,the ground 400 MHz digital communication relay system is studied.Based on the principle of railway DMR wireless communication application and the characteristics of railway train operation environment,demand analysis and function design is carried out to realize the functions of 400 MHz digital freight train-end communication relay,digital intercom relay,tunnel cable leakage fault location and monitoring,etc.,which are verified by field test.The test results show that the system can improve the reliability of train-end communication,extend the intercom distance of construction workers,and reduce the labor intensity of cable leakage maintenance.

关 键 词：铁路通信 列尾通信 中继系统 数字通信 弱场 漏缆 

分 类 号：U285.2[交通运输工程—交通信息工程及控制]