论文总字数：15853字

摘 要

21世纪，心率测量仪已经得到了广泛的应用，不仅仅是在医疗卫生领域，在个人的生活中，也起到了相当大的作用。不仅能够帮助医生们诊断各种疾病，还能让我们每个人在平时时刻的监测自己的身体状况，提醒我们合理运动，及时发现身体不适，尽早就医，为了解决心率监测仪器体积大不方便的问题，本次项目设计了基于单片机的人体心率健康监测系统，以STC89C52RC为主控的中央处理器，以ST188为测试端口，测量血液透光性从而得出血液透过数据，通过单片机定时器定时溢出时间来计算脉搏速率。系统在测量的过程中，通过led小灯显示采集情况，当指示灯规律闪烁时，说明系统已经正确采集到数据。当系统结束采集，会在1602显示屏上显示采集到的脉搏速率。

本次项目使用红外光电传感器ST188采集脉冲信号，经过一系列的电路处理后，输入单片机，通过外部中断计时，从而计算出人体心率，十分的简单快捷。此外，本系统还有自定义设置上下限心率报警功能，当用户心率处在设定范围之外时，蜂鸣器会报警提示。其次，为响应国家绿色生活号召，本系统增添了太阳能化学能混合供电模式，用户可以根据使用场景自主选择。

关键词：STC89C52RC单片机；ST188光电传感器；1602显示屏；太阳能化学能双供电。

Human Heart Rate Health Monitoring System Based on Single Chip Microcomputer

Abstract

In the 21st century, the heart rate meter has been widely used, not only in the field of medical and health, but also in personal life, which has played a considerable role. It can not only help doctors to diagnose various diseases, but also let each of us monitor our own physical conditions at ordinary times, remind us to exercise reasonably, find out physical discomfort in time, and go to hospital as soon as possible. In order to solve the problem of inconvenient and large volume of heart rate monitoring instrument, this project designs a human heart rate health monitoring system based on single chip microcomputer, with stc89c52rc as the core processing The ST188 photoelectric sensor is used to measure the light transmittance of blood so as to obtain the data of blood transmission, and the pulse rate is calculated by the timer timing overflow time of single chip microcomputer. In the process of measurement, the system displays the acquisition situation by LED small light. When the indicator light flashes regularly, it indicates that the system has collected the data correctly. When the system finishes collecting, the collected pulse rate will be displayed on the 1602 display screen.

In this project, the infrared photoelectric sensor ST188 is used to collect the pulse signal. After amplifying and shaping the circuit, it is input into the timer port of single-chip microcomputer for corresponding processing, so as to calculate the human heart rate, which is very simple and fast. In addition, the system also has a custom set upper and lower limit heart rate alarm function. When the user's heart rate is outside the set range, the buzzer will give an alarm prompt. Secondly, in response to the call of national green life, the system adds a hybrid power supply mode of solar chemical energy, which users can choose independently according to the use scenarios.

Key words: STC89C52RC Single Chip Microcomputer, ST188 Photoelectric Sensor, 1602 Display Screen, Solar Chemical Energy Dual Power Supply

目 录

摘 要 I

Abstract II

目 录 III

引 言 1

第一章 概 述 2

1.1 选题的背景和意义 2

1.2 心率脉搏仪的发展与前景 2

第二章 总体方案的设计与选型 4

2.1 系统整体设计概述 4

2.2 主控模块的选型 4

2.3 显示模块的选型 4

2.4 脉搏采集模块的选型 5

2.5 按键模块的选型 5

第三章 系统硬件电路设计 6

3.1 系统总体电路设计概述 6

3.2 主控电路设计 6

3.2.1 以STC89C52为核心的主控电路设计 7

3.3 显示电路设计 8

3.3.1液晶显示电路设计 8

3.4 脉搏采集电路设计 8

3.4.1传感器电路设计 9

3.4.2耦合、滤波电路设计 9

3.4.3放大、整形电路设计 10

3.5 按键电路设计 11

第四章 系统软件设计 13

4.1系统整体软件设计概述 13

4.2主控软件设计 13

4.3显示软件设计 14

4.4脉搏采集软件设计 16

4.5 按键软件设计 17

第五章 系统调试 18

5.1软件调试 18

5.2硬件调试 18

5.3误差分析 19

5.4实物演示 19

结 论 22

致 谢 23

参考文献 24

附 录 25

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