非接触测速信号的接口设计

The Design of Interface for Contactless TACH Singnal

在非接触测速中,采用变中频带通滤波技术,处理非接触测速传感器的信号接口,取得了教好的效果。使电路结构大为简化,并且提高的频率响应,彻底消除了采用跟踪滤波处理方式所存在的启动突变、信号跳变大、输出曲线不平滑等缺陷,同时降低了功耗,并具有很好的通用性和兼容性。

By using intermediate irequency passdand tecnniquc to process interrace ior contactless TACH singnal, the circuits of the contactless TACH singnal transducer are simplified and frequency influence of the transducer improved, which leads lower power consumption and better compatibility and versatility, with initiation sudden change, singnal transition, and unsmoothed output curve eliminated.