摘要
在电气化铁路轨道电路中，两条钢轨即是轨道信号的传输线，又是电力机车牵引电流返回变电所的回流线。工频牵引电流对轨道电路传输的信号带来极大的干扰，信干比可达１／６０。本文介绍了解决现代电气化铁路轨道电路综合参数＂在线＂测试过程的技术难题。
In electric railway track circuit, the two steel tracks are both transmission line of the track signal and return line for electric locomotive tractive current back to electric substation. The work-frequence tractive current creates big disturbance on the track singnal and the S/N can come up to 1/60. In this paper. It is given how to solve technical problem on track circuit synthetic parameters on-line measure in modern electric railway.
关键词
轨道电路
电气化铁路
技术参数
测量
track circuit, switching capacity filter, method of heterodyne measure,zero crossing shaping circuit, process before analog
