可穿戴式心率监测及显示系统设计
摘要：心率是指一定时间内心脏跳跃的次数,通常情况指一分钟跳动的次数,是我们临床常规检查中的生理指标。心率监测系统现在在我们日常生活中已有了十分广泛的应用。通常在医院都会检查一个人的心率，这样可以初步的确定一个人的健康状况。本课题设计是设计一个可穿戴式的心率监测及显示系统。本系统以MSP430单片机为核心，红外发光二极管与光敏三极管作为传感器，运用单片机系统的内部定时器可以计算时间，用光敏三极管感知心跳脉冲，接着MSP430单片机会通过脉冲累加进而得到心脏跳的次数，在显示屏上显示心脏跳动次数和时间及心电图。本系统实现了心率的监测与显示、测量还有报警提醒等功能。实验结果表明，系统工作正常，测量灵敏度高，实现了设计功能。
关键词：心率监测；MSP430单片机；光电传感器
Design of Wearable Heart Rate Monitor and Display System
Abstract： Heart rate refers to the number of times the heart is jumping in a certain period of time, usually refers to the number of times a minute, it is the physiological index of our clinical routine examination. Heart rate monitoring system has been widely used in our daily life. Usually in the hospital will check a person’s heart rate, so that it can be a preliminary determination of a person’s health status. This topic design is the design of a wearable heart rate monitoring and display system. The STC89C51 MCU as the core infrared emitting diode and the photosensitive triode tube as a sensor, using the MCU internal timer can be computed in time, with a photosensitive triode tube pulse heartbeat perception, then MCU STC89C51 will by pulse accumulation added and have the heart jump times. On the screen display heart beat frequency and time. This system has realized the heart rate monitor and the display, the measurement also has the alarm reminder and so on the function. The experimental results show that the system works well, the measurement sensitivity is high, and the design function is realized.
Keywords： Hearting rate monitoring；AT89C51 single-chip microcomputer；Photoelectric sensor
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