目 录
摘 要 ............................................................................................................................I
Abstract..........................................................................................................................II
第 1 章 概述..................................................................................................................1
1.1 选题的背景和意义..........................................................................................1
1.2 心率监测系统的设计设想..............................................................................1
1.3 心率监测系统方案的选择..............................................................................2
第 2 章 心率监测系统系统结构..................................................................................4
2.1 光电心率监测系统的结构..............................................................................4
2.2 工作原理..........................................................................................................5
2.3 光电心率监测系统的优点..............................................................................5
2.4 光电心率监测系统的适用范围......................................................................6
第 3 章 硬件系统..........................................................................................................7
3.1 控制器..............................................................................................................7
3.1.1 AT89S52 简介 .......................................................................................7
3.1.2 AT89S52 的结构 ...................................................................................7
3.2 信号采集..........................................................................................................9
3.2.1 光电传感器的原理.................................................................................9
3.2.2 光电传感器的结构.................................................................................9
3.2.3 信号采集电路.........................................................................................9
3.3 信号放大 .......................................................................................................................10
3.4 波形整形电路................................................................................................13
3.5 单片机处理电路............................................................................................14
3.6 显示电路........................................................................................................14
3.6.1 1602 字符型 LCD 简介........................................................................15
3.6.2 1602LCD 的指令说明及时序..............................................................15
3.6.3 1602LCD 的 RAM 地址映射及标准字库表.......................................16
3.6.4 电源模块电路原理图...........................................................................16
第 4 章 软件系统........................................................................................................17
4.1 主程序流程：................................................................................................17
4.2 中断程序流程................................................................................................18
4.3 显示程序流程：............................................................................................18
4.4 软件说明........................................................................................................19
第 5 章 抗干扰及使用方法........................................................................................20
5.1 抗干扰措施....................................................................................................20
5.1.1 环境光对心率传感器测量的影响.......................................................20
5.1.2 电磁干扰对心率传感器的影响...........................................................20
5.2 使用方法........................................................................................................20
第 6 章 系统检验........................................................................................................21
6.1 系统检验........................................................................................................21
6.2 误差分析........................................................................................................22
第 7 章 总结与展望....................................................................................................23
参 考 文 献................................................................................................................24
