地面电子单元接口C实时监测技术研究  

Research on Real-time Monitoring Technology for Interface C of Lineside Electronic Unit

作　　者：左林华 ZUO Linhua

机构地区：[1]中国铁路广州局集团有限公司电务部,广州510088

出　　处：《铁道通信信号》2024年第12期39-45,共7页Railway Signalling & Communication

基　　金：中国铁路广州局集团有限公司科研项目(2023K078-Z)。

摘　　要：针对现场运用中因应答器传输系统所属LEU与有源应答器之间的接口C工作异常导致应答器信息缺失,而又缺乏有效监测手段的问题,研究接口C实时监测系统。采用电流互感和高阻并接技术,在LEU输出端增加采集模块,对接口C的电流和电压等信号进行采集;基于对管内多年来有源应答器故障案例的统计分析,建立故障判定模型并进行试验验证;对监测系统接入影响进行测试,确认系统接入对接口C信号影响较小,不影响原有电路的正常工作。现场试验表明,监测系统通过接口C电压、电流等组合判定,可准确找出接口C故障原因及部位,实现对接口C不间断监测、预警和报警,可为应答器传输系统提供一种新的维护手段。In response to the problem of missing balise information caused by abnormal operation of the interface C between the LEU and the active balise in the balise transmission system during field use,as well as the lack of effective monitoring methods,the interface C real-time monitoring system is studied.By adopting the current mutual inductance and high resistance parallel connection technology,a collection module is added at the LEU output to collect signals such as the current and voltage of the interface C.Based on the statistical analysis of active balise fault cases of the railway bureau over the years,a fault diagnosis model is established and experimentally verified.Test of the impact of system access shows that the system has minimal impact on the interface C signals and does not affect the normal operation of the original circuit.Further field tests demonstrate that the system can accurately identify the cause and location of interface C faults by analyzing the collected interface C voltage and current signals,achieving continuous monitoring,early warning,and alarm functions for the interface C.This provides a new maintenance method for the balise transmission system.

关 键 词：应答器传输系统 接口C 地面电子单元 有源应答器 实时监测 故障判定模型 故障定位 

分 类 号：U284.48[交通运输工程—交通信息工程及控制] U285[交通运输工程—道路与铁道工程]