新型二取二结构的25Hz微电子相敏接收器数据处理方法研究

Discussion on New Type of 2-Vote-2 25Hz Phase-sensitive Track Circuit Receiver

介绍了新型二取二结构的25Hz相敏轨道电路接收器,分别采用函数相关性法和傅里叶变换法对受端轨道电压信号和局部电源信号进行数字信号处理,并对二者的输出信号进行动态与门判决,再输出驱动后级执行轨道继电器的控制信号,从而提高接收器的安全性和抗干扰能力。

One new type of 25Hz phase-sensitive track circuit receiver with 2 vote 2 logic opera- tion unit is introduced. A correlation function method and a Fourier transform method are used to fulfill digital signal processing of rail voltage signal and local power supply signal respectively and dynamic and gate judgment are made to both of the output signals of the two methods and the re- sults are then output control signal to drive the execution track relay, so as to improve the securi- ty and anti-interference capability of the receivers.