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本文介绍了一种用作瞬时转速测量的PC机主机外硬件结构极其简单的脉宽计数电路,在不影响主机系统正常工作的前提下利用了PC机系统板上的计数器、外接元件仅是一个非门,实测表明效果良好,为开发利用PC机机内的计数器和转轴的瞬时转速测量开辟了一条新路子.
This paper introduces a pulse width counting circuit with extremely simple hardware structure for the host computer of instantaneous speed measurement. It takes advantage of the counter on the PC system board without affecting the normal operation of the host system. The external components are only one Non-door, the measured results show good results for the development and utilization of PC machine counter and shaft instantaneous speed measurement has opened up a new path.