基于单片机的宽量程高精度频率计

Cymometer of Wider-range and Higher Precision Based on Microcontroller

基于单片机宽量程高精度频率计的实现方案:测高频时通过多级硬件计数器分频,使高频测量范围可靠提升;低频测周以软件计时进行时间量程拓展、计入中断响应时间保证高精度;能自动等精度切换检测;降低了成本;易于从软件、硬件进一步扩展量程。

A cymometer＇ of wider-range and higher precision based on the microcontroller,a pursuit of performance.Multilevel circuit for frequency division and wider-range of higher frequency measurement.Chip software timing,Included in the interrupt response time,for wider-range and higher precision of lower frequency measurement,can automatic switching mode of detection with equal setting precision.It easy to achieve a higher performance of range and range and price-quality ratio by software and hardware means with this scheme.