For non-fixed motor speed measurement to explore the issue. Motor used in the shaft end or axial paste method of reflective paper, each week to produce a pulse, we will detect each pulse cycle, through the microprocessor after the octave into a 50 duty cycle for the standard square-wave signal not only greatly improve the stability of the pulse signal, and the detection accuracy by multiplier multiplier multiplier to decide. And this paper is the octave pulse signal precision and stability control.

Packet : 43680544beipingqi.rar filelist
倍频器.ASM

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