目录第1章绪论.........................................................................................................11.1研究背景.......................................................................................................................11.2国内外研究现状...........................................................................................................11.3研究内容及方案...........................................................................................................31.4方案概述.......................................................................................................................3第2章系统硬件设计.........................................................................................52.1元件选择.......................................................................................................................52.1.1光电传感器..........................................................................................................52.1.2AT89C51单片机.................................................................................................62.2脉搏信号检测电路.......................................................................................................92.3脉搏信号采集电路.....................................................................................................102.4脉搏信号放大电路.....................................................................................................102.5数码管显示电路.........................................................................................................112.6脉搏测量仪总电路原理图.........................................................................................12第3章系统软件设计.......................................................................................133.1人体脉搏测量仪的主程序流程.................................................................................133.2定时器中断程序的流程.............................................................................................143.2.1中断的概念........................................................................................................143.2.2定时器中断程序的流程....................................................................................153.3外部中断程序流程.....................................................................................................17第4章系统调试...............................................................................................194.1Proteus仿真结果........................................................................................................214.2放大电路的调试.........................................................................................................214.3整形电路的调试.........................................................................................................214.4光电传感器的调试.....................................................................................................22结论......................................................................................................................23致谢......................................................................................................................24参考文献.....................................................................
