As long as the shaft per revolution, resulting in one or multiple fixed pulse, and pulse into the microcontroller to count, you can get speed information.

只要转轴每旋转一周，产生一个或固定的多个脉冲，并将脉冲送入单片机中进行计数，即可获得转速的信息。

youdao

As long as the shaft per revolution, resulting in one or multiple fixed pulse, and pulse into the microcontroller to count, you can get speed information.

只要转轴每旋转一周，产生一个或固定的多个脉冲，并将脉冲送入单片机中进行计数，即可获得转速的信息。

youdao