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本文介绍一种以8031单片机为核心的智能化速度测量仪。该测量仪在测量方法上改进了传统的多周期测量法,使得测量精度与被测信号的频率无关只取决于预选的闸门时间;软件部分四大模块即采样时间控制模块、脉冲信号计数模块、数据处理模块、主程序及键控模块等之间联系非常特殊,前三个模块靠中断进入,因而十分有效地利用了 CPU 时间,提高了测量速度,配置了18一数字/功能键和 TP801P 微型打印机,使得闸门时间设置及功能选择更加灵活,并按键控命令打印测量结果。该测量仪直接测量脉冲信号范围0.06HZ～500KHZ,如果软件部分稍作改动,频率下降便可降低,如果扩充硬件计数器,频率上限很容易提高。
This article describes a 8031 microcontroller as the core of the intelligent speed measuring instrument. The measuring instrument improves the traditional multi-period measuring method in the measuring method, so that the measuring accuracy has nothing to do with the frequency of the signal to be measured, only depends on the pre-selected gate time. The four parts of the software are the sampling time control module, the pulse signal counting module, Data processing module, the main program and the key control module, the connection between the very special, the first three modules by interrupt access, which is very effective use of the CPU time and improve the measurement speed, configured with a 18 digital / function keys and TP801P mini Printer, making the gate time setting and function selection more flexible, and press the key command to print the measurement results. The instrument directly measures the pulse signal range 0.06HZ ~ 500KHZ, if the software part of a slight change, the frequency can be reduced to reduce, if you expand the hardware counter, the frequency cap is easy to increase.