某发动机转速测量系统滤波电路的设计

Design of Filtering Electrocircuit of Test System Using for Speed Measurement of the Engine

介绍了带通滤波器的一般设计方法 ,并且根据某型检查仪的研制需求 ,进行了设计。该滤波电路具有体积小、重量轻、成本低等特点 ,适合用 A/ D卡直接采集 ,经实际工作证明 ,工作稳定可靠 ,能比较好地完成滤波功能。

This paper introduced the general design method of the bandpass filter, and according to the requirement of some type inspecting instrument, the paper proceeded the design. The filtering electrocircuit is small, light and cheap, it suits to use the A/D cards collect directly. Through the actual operative verification, it completes the filtering function goodly, what is more, the electrocircuit is stable and reliable.