基于单片机的脉搏测量仪设计-.doc

河南理工大学毕业设计（论文）说明书 摘要 本文介绍的是一种基于单片机的脉搏测量仪设计，作为该系统中重要的电路模块，如心率采集电路、显示电路和STC89C52单片机之间通过串口实现连接。本次设计运用单片机STC89C52作为中心控制处理单元，通过ST188作为红外光电传感器来采集脉搏信号，经过LM358进行运放；再通过前后级滤波、放大、整形，从而得到稳定信号；实现了快速检测心率的功能。还可以通过按键来设置脉搏值的上下限范围；蜂鸣器驱动模块可以在超出所设置的范围时进行报警提示，测量结果在液晶上显示。 实验表明，该设计的测试结果与实际的要求基本一致，STC89C52单片机超强的抗干扰能力和LCD1602显示屏控制比较方便的优点使这些功能能够顺利地完成。该系统的制作成本在百元以内，具有价格低廉、便于操纵、功耗小、可靠性高等优点，十分适用于家庭和个人使用。 关键词：心率；红外光电传感器；STC89C52；LM358；软件 Abstract Presented in this paper is a design of pulse measuring instrument based on MCU, as the circuit module plays an important role in the system, such as heart rate acquisition circuit, display circuit and STC89C52 microcontroller through the serial port to realize the connection. This design with STC89C52 microcontroller as the central control unit, through ST188 as infrared photoelectric sensor to collect the pulse signal, after the lm358 for op amp; again through before and after filtering, magnifying, shaping, and get stable signal; functions to achieve the rapid detection of heart. You can also through the button to set the pulse value scope; buzzer driver module In the range beyond the scope of the alarm prompt, the measurement results in the liquid crystal display. Experimental results show that the test results of the design and practical requirements are basically the same, STC89C52 MCU strong anti-interference ability and LCD1602 display control the advantages of more convenient so that these features can be successfully completed. The production cost less than 100 yuan, with low price, easy manipulation, low power consumption, high reliability, very applicable to families and individuals. Key words: heart rate; infrared photoelectric sensor; STC89C52; LM358; software 目录TOC \o 1-3 \h \u HYPERLINK \l _Toc1196 第1章 引言 PAGEREF _Toc1196 1 HYPERLINK \l _Toc3881 1.1 选题背景及意义 PAGEREF _Toc3881 1 HYPERLINK \l _Toc3494 1.2 国内外发展现状 PAGEREF _Toc3494 1 HYPERLINK \l _Toc21509 1.3 课题研究内容 PAGEREF _Toc21509 2 HYPERLINK \l _Toc10325 第2章 整体方案设计 PAGEREF _T