基于单片机便携式心率测试仪计..doc

哈尔滨理工大学本科生毕业设计 PAGE II 基于单片机的便携式心率测试仪的设计 摘 要 心率测量仪在我们的日常生活中已经得到了非常广泛的应用。为了提高心率测量仪的简便性和精确度，本设计计了一种基于51单片机的心率测量仪。系统以AT89S51单片机为核心，以红外发光二极管和光敏三极管为传感器，并利用单片机系统内部定时器来计算时间，由光敏三极管感应产生脉冲，单片机通过对脉冲累加得到脉搏跳动次数，时间由定时器定时而得。系统运行中能显示脉搏次数和时间，系统停止运行时，能够显示总的脉搏次数和时间,在脉搏数超过设定上下限时蜂鸣器报警。经测试，系统工作正常，达到设计要求。 关键词：心率测量仪；AT89S51单片机；红外发光二极管；光敏三极管；蜂鸣器。  ABSTRACT Heart rate measuring instrument in our daily lives has been widely used. In order to improve the pulse measuring instrument is simple and accurate, the design method based on 51 single chip Heart rate measuring instrument. System based on the AT89S51 single-chip microcomputer as the core, with the infrared emitting diode and a photosensitive triode sensor three, and the use of MCU internal timer to calculate time, a photosensitive triode induction pulse three, single chip microcomputer based on pulse accumulation by pulse number, and time by the timer timer. System can display the pulse frequency and duration, the system stops running, can display the total pulse frequency and duration, the pulse number exceeds the set upper and lower limit alarm buzzer. After testing, the system is working properly, achieves the design requirements. Key words: Heart rate measuring instrument;AT89S51 single chip microcomputer;Infrared emitting diode;A three transistor;Buzzer. 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc326062500 摘 要 PAGEREF _Toc326062500 \h I HYPERLINK \l _Toc326062501 ABSTRACT PAGEREF _Toc326062501 \h II HYPERLINK \l _Toc326062502 第1章 引 言 PAGEREF _Toc326062502 \h 3 HYPERLINK \l _Toc326062503 1.1 概述 PAGEREF _Toc326062503 \h 3 HYPERLINK \l _Toc326062504 1.2 基于单片机的心率测试仪的发展与应用 PAGEREF _Toc326062504 \h 4 HYPERLINK \l _Toc326062505 1.3 设计说明书内容 PAGEREF _Toc326062505 \h 5 HYPERLINK \l _Toc326062506 第2章 整体方案分析 PAGEREF _Toc326062506 \h 6 HYPERLINK \l _Toc326062507 2.1 任务 PAGEREF _Toc326062507 \h 6 HYPERLINK \l _Toc326062508 2.2 要求 PAGEREF _Toc326062508 \h 6 HYPERLINK \l _Toc326062509 2.3 设计时要考虑的问题 PAGEREF _Toc32606