单片机的脉搏测量仪的设计方案.docVIP

基于单片机的脉搏测量仪的设计脉搏测量仪在我们的日常生活中已经得到了非常广泛的应用。为了提高脉搏测量仪的简便性和精确度，本课题设计了一种基于51单片机的脉搏测量仪。系统以AT89C51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。系统停止运行时，能够显示总的脉搏次数和时间。经测试，系统工作正常，达到设计要求1）自动测量脉搏并且对所得到的脉搏进行自动分析。 （2） 数字化技术等先进技术的应用。 （3）多功能化越来越明显。 关键词： AT89C51单片机；脉搏测量仪；传感器；信号采集 The Design of Pulse Measuring Instrument Based on Microcomputer Abstract Pulse measuring instrument in our daily lives has been a very wide range of applications. In order to improve the simplicity and accuracy of the pulse measuring instrument, the subject is designed based on 51 single-chip pulse measuring instrument. System uses AT89C51 microcontroller as the core, the infrared light-emitting diode and the photosensitive triode as sensor, and calculates time with using of the inner timer. The sensor produces pulse and the single-chip microcomputer gets the frequency by accumulating the pulses, and the timer obtains the time. Sensor collected for detecting the pulse of infrared light is converted into electrical signals, these electrical signals by the signal processing system, filtering, amplification, shaping meet the requirements of the pulse signal transmitted to the microcontroller, and processed by the microcontroller, and finally from the digital display pulse rate per minute. When the system stops running, it is possible to display the total of the pulse frequency and time. After testing, the system works well and meets the design requirements. The pulse measurement system performance is good, simple structure, low power consumption, small volume, stable output display. Through the study of the subject grasps the pulse measurement principle, method and implementation process. Learned the related knowledge of single chip microcomputer, can more comprehensive integration of circuit, electronic technology, signal acquisition and processing, program design, and so on professional knowledge. With the development of electronic technology, pulse measurement tec