一种便携式心率检测仪的设计  

Design of a Portable Heart Rate Monitor

作　　者：石肖伊 王先全[1] 赵雨倩 Shi Xiaoyi;Wang Xianquan;Zhao Yuqian(Chongqing University of Technology,Chongqing 400054,China)

机构地区：[1]重庆理工大学,重庆400054

出　　处：《机电工程技术》2023年第2期235-239,共5页Mechanical & Electrical Engineering Technology

摘　　要：心率异常是病人心血管系统出现问题的主要指标。目前大部分的健康监测设备体积大且检测准确度不高。因此,设计一种高精度、小体积、便携的心率检测仪已刻不容缓。设计了一款基于手指心率的测量仪。该测量仪由硬件电路模块和软件设计模块两部分组成。由采集电路、滤波电路、放大电路、整形电路、单片机系统、键盘电路和显示电路共同组成系统的硬件电路。系统软件包括心率信号处理、设置心率上下限和显示心率值,由主程序、显示子程序和定时器子程序共同作用实现。手指放在传感器上感应心率信号,通过硬件电路处理输入到单片机内,单片机则实现对心率信号的分析、处理,间接测量心率值,如果超过设定范围,系统将驱动蜂鸣器报警。在系统运行期间,可以观察到LED闪烁。如果闪烁均匀,则测量值准确。实验结果表明,该系统能够实时、精确地显示心率值,可靠性高并具有较强的实用性。Abnormal heart rate is a major indicator of cardiovascular problems in patients.At present,most of the health monitoring equipment is bulky and inaccuracy.Therefore,it is urgent to design a kind of high precision,small volume,portable heart rate detector.A finger heart rate measuring instrument was designed.The measuring instrument was composed of hardware circuit and software design.The hardware circuit of the system consisted of collecting circuit,filtering circuit,amplifying circuit,shaping circuit,single chip microcomputer system,keyboard circuit and display circuit.The system software included heart rate signal processing,setting the upper and lower limits of heart rate and displaying heart rate value,which was realized by main program,display subprogram and timer subprogram.The finger was put on the sensor to sense the heart rate signal,through the hardware circuit processing input to the monolithic integrated circuit,the single-chip microcomputer realized the analysis and processing of the heart rate signal,indirectly measured the heart rate value.If it exceeded the set range,the system would drive the buzzer alarm.LED flashing could be observed during system operation.If the scintillation was uniform,the measured value was accurate.The experimental results show that the system can display the heart rate in real time and accurately,with high reliability and practicability.

关 键 词：心率检测 光电传感器 LCD显示 指尖心率 

分 类 号：TH776[机械工程—仪器科学与技术]