体外循环机速度测量装置

Extracorpoveal Circulation Speed-Measuring Apparatus

介绍了一种用单片机 MCS—51实现的简易测速装置。它测量准确,运用范围广。程序设计采用了先进的时间法,即测得运转一周的时间(可精确到0.001秒),再折算成速度,充分利用了 MCS—51控制能力和运算能力强的特点。其中测 T 程序中巧妙地运用了光电转换采集的两个脉冲信号作为中断信号,分别启动和中止计数器工作。

This paper introduces a simple speed-measuring apparatus equipped with single-chip microcom- puter,MCS-51.It can be used in wide fields with excellent precision.A progressive method of time sampling is adopted for programming,i.e.transfer the time per revolution to speed (with precision of 0.001s).So the characters of MCS-51,good controlling and running ability,are fully utilized.In the time-measuring pro- gramm,two impulse signals,sampled by photo-electric transformation are wisely adopted to start and stop the counter respectively.