相敏轨道电压传感器的设计与实现

The design and implementation of track phase angle sensor

提出了一种准确可靠的检测铁路25Hz相敏轨道电压传感器的设计与实现方案。采用通道复用技术实现了多路相敏轨道电压信号的监测,降低了产品成本;应用FIR数字滤波技术抑制干扰信号,使用相位差迭代算法实现了信号频率的高精度检测;运用数字信号处理技术准确测量相位角差。该方案能准确检测铁路25Hz相敏轨道电路的相关特征,方便进行设备监测和维护;具有高集成度和高可靠性。

The design and implementation of comprehensive detection sensor of 25 Hz phase sensitive track circuit signal is presented.it use channel multiplexing technology to realize multiplexed signal detection and help lower costs.Application of FIR digital filter technology could suppress interfering signals,and the phase difference method could detect the signal frequency; The use of digital signal processing accurately measures the phase angle difference.The design can accurately detect the railway 25 Hz phase sensitive track circuit signal,Conveniently for equipment monitoring and maintenance,also have high integration and high reliability.