叠加预发码电路JMJ及FMJ继电器电路的修改  

Modification of JMJ Overlap Pre-coding Circuit and FMJ Relay Circuit

作　　者：曹海霞[1] 

机构地区：[1]中铁二院成都勘察设计研究院有限责任公司,成都610081

出　　处：《铁路通信信号工程技术》2016年第3期102-103,共2页Railway Signalling & Communication Engineering

摘　　要：97型25 Hz相敏轨道电路叠加电码化预发码电路进行分析,发现JMJ及FMJ无延缓落下性能,引起在办理正线列车进路时轻车跳动或其他情况暂时无码,提出电路改进方案并应用于工程实践中。According to the analysis of the overlap pre-coding circuit of 97-Type 25H phase detecting track circuits, the paper presents that JMJ and FMJ circuits have no delay-falling performance, which will cause shunt faults or other temporary no-codes when setting the train route for main line and puts forward the improved scheme of the circuits and the application of the scheme in the practice.

关 键 词：电码化 机车信号信息 电路 

分 类 号：U284.4[交通运输工程—交通信息工程及控制]