混凝土枕轨道电路参数与信号频率关系的研究

RESEARCH ON THE RELATIONSHIP BETWEEN THE SIGNAL FREQUENCY AND THE TRACK CIRCUIT PARAMETER OF CONCRETE SLEEPERS

本文通过实测数据的综合分析,较系统地揭示出我国混凝土轨枕线路条件下,轨道电路一、二次参数与传输信号频率之间的基本关系。特别对于道碴电阻为1～1000Ω·km、信号频率为25～3000Hz情况下,轨道电路一、二次参数的频率特性,作出了定量分析和相应结论。研究结果指出,在分析、处理轨道电路的传输问题时,必须依据自身的参量值和相关特性,而不能冒然引用通信线路的某些结论。

By synthetically analysing measured data, we systematically reveal the basic relationship between the first or second parameter of the track circuit and the transmissive signal frequency under the circumstance of the lines of concrete sleepers in China. Especially, we conduct a quan-titative analysis on the frequency characteristics of the first or second parameter of the track cir-cuit and draw corresponding conclusions in accordance with the case when the ballast resistance is 1～1000 Ω·km and the signal frequency is 25～3000Hz. As the result of the study shows,in analysing and processing transmissive problems of track circuits,the parameters and relative char-acteristics of the track circuit, rather than the conclusions drawn from communication lines,should be taken as the basis.