摘要：城市人群物质生活不断提升，身体在快速的生活节奏和缺乏锻炼中出现了亚健康的情况。越来越多青年人遇到了从前只有中老年人才会遇到的心血管疾病。于是很多人注意到了这方面的状况，而脉搏的测量在一定程度上可以反映出人体的部分生理状况，可以方便快速了解自身的身体情况。70097

本课题主要设计一种自用的，家庭用的脉搏测量器。系统将通过proteus完成仿真测试，整个设计以STC89C52单片机控制系统，采用光电传感器来测量脉搏，采集到的脉搏经过放大电路，滤波整形电路，然后传输到单片机内部处理，最终将脉搏测量结果显示到LCD上。系统还可以自主设定心率上下限报警。

毕业论文关键词： 脉搏测量；STC89C52单片机；光电传感器；proteus

Design of heart rate meter based on proteus

Abstract：People live in city whose material life continues to improve, the body in the fast pace of life and lack of exercise in the sub-health situation. More and more young people met the past only in the elderly will encounter cardiovascular disease. So many people noticed this situation, and pulse measurement to a certain extent, can reflect the body's physiological condition, you can quickly and quickly understand their own physical condition.

This topic mainly designed a self-use, home with the pulse measuring device. The system will complete the simulation test through proteus, the main design ideas to STC89C52 single-chip microcomputer control system, the use of photoelectric sensors to measure the pulse, the collected pulse through the amplifier circuit, filter shaping circuit, and then transmitted to the microcontroller internal processing, the final pulse measurement results LCD on. The system can also set the upper and lower heart rate alarm.

Keywords:  Hearting rate monitoring；STC89C52 single-chip microcomputer；Photoelectric sensor；proteus

目录

1引言 1

1.1 课题的研究目的和研究意义 1

1.2 国内外研究现状与水平 1

1.2.1 发展现状 1

1.2.2未来发展趋势 2

2方案论证选择与设计 3

2.1 系统研究内容与目标 3

2.2 处理模块的选择与论证 3

2.3 传感器的选择与论证 3

2.4 显示模块的选择与论证 4

3各元器件选择以及其功能介绍 5

3.1 STC89C52单片机 5

3.2 LCD1602液晶显示屏 7

3.3 红外接收传感器 9

3.4 LM358 10

3.5 时钟DS1302 芯片 11

3.6 74HC14 六路施密特触发反相器 13

4硬件系统电路设计 15

4.1 STC89C52的最小系统设计 15

4.1.1 时钟电路 15

4.1.2 复位电路 15

4.2 DS1302时钟电路 16

4.3 蜂鸣器报警电路 16

4.4 显示电路 17

4.5 按键电路 18

4.6 运算放大电路