At the last, we designed a UM71 tracksignal parameters detecting system base on TMS320F2812, and implemented part functions of the frequency-shift tracksignal detecting.
In electric railway track circuit, the two steel tracks are both transmission line of the tracksignal and return line for electric locomotive tractive current back to electric substation.
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。
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Based on the characteristics of Domestic frequency shift key tracksignal, this paper presents a kind of appropriate detection method for our national train signal — Time-frequency analysis.