脉搏与呼吸信号检测系统设计  

Design of Pulse and Respiratory Signals Detection System

作　　者：张瑞[1] 邢丽冬[1] 张笑 钱志余[1] ZHANG Rui;XING Lidong;ZHANG Xiao;QIAN Zhiyu(College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,210016)

机构地区：[1]南京航空航天大学自动化学院,南京市210016

出　　处：《中国医疗器械杂志》2024年第2期167-172,共6页Chinese Journal of Medical Instrumentation

基　　金：江苏省自然科学基金(BK20190387);江苏省大学生创新创业训练项目(202010287208T)。

摘　　要：设计了脉搏和呼吸同步检测系统,用于探究不同情形下生理信号的变化情况。系统通过STM32控制脉搏和呼吸采集电路获取相应信号,测算后实时显示心率、呼吸频率等参数,将数据传输至上位机,并保存到数据库。实验测试结果表明,该系统可监测不同情形下的脉搏和呼吸波形,波形状态良好;与医用脉搏血氧仪相比,测算出的心率、血氧饱和度误差在3%以内,呼吸频率与实际数值相比误差在5%以内,验证了系统信号采集的准确性。该系统体积小、成本低、穿戴舒适,可应用于与脉搏和呼吸信号相关的实验研究。A pulse and respiration synchronous detection system is designed to explore the changes of physiological signals in different situations.The system obtains the corresponding signal through STM32 control pulse and respiratory acquisition circuit,calculates and displays real-time parameters such as heart rate and respiratory rate,and transmits the data to the upper computer for storage in the database.The experimental test results show that the system can monitor pulse and respiratory waveform in different situations,and the waveform is in good condition.Compared with medical pulse oximeter,the error of measured heart rate and blood oxygen concentration is less than 3%,and the error of respiratory rate is less than 5%compared with the actual value,which verifies the accuracy of system signal acquisition.The system is small in size,low in cost,and comfortable to wear,and can be applied in experimental research related to pulse and respiratory signals.

关 键 词：脉搏信号 呼吸信号 同步采集 特征参数提取 

分 类 号：R318[医药卫生—生物医学工程] R197.39[医药卫生—基础医学] TH77[机械工程—仪器科学与技术]