【摘要】 本文讨论了仪器的电路结构,并详细叙述了25Hz 带通滤波器的工作原理。本仪器通过电磁感应线圈拾取轨道电路电流信号,经过滤波处理,消除各种干扰,以非插入方式测量出轨道上的25Hz 电流分布情况。从而可以迅速找到25Hz 电路的故障点。更多还原

【Abstract】 The Authors not only discuss the circuit structure of this instrument,but also give a detailed description of the operating principle of 25Hz band-pass filter.After picked up by induction coils,the current signals on rails are filtered to remove the interference.Then we can find out the distribution of 25Hz current signals on rails with non-inserting measurement and the location of fault of the 25Hz current singal.更多还原