基于STM32的便携式心电信号采集系统设计  

Design of portable ECG acquisition system based on STM32

作　　者：李红利[1] 刘培军 陈国崴 张荣华[1] 李月军 LI Hongli;LIU Peijun;CHEN Guowei;ZHANG Ronghua;LI Yuejun(School of Electrical Engineering and Automation,Tianjin Polytechnic University,Tianjin 300387,China;Hangshen Group Co.,Ltd,Hangzhou 311234,China)

机构地区：[1]天津工业大学电气工程与自动化学院,天津300387 [2]杭申集团有限公司,杭州311234

出　　处：《天津师范大学学报（自然科学版）》2019年第2期67-70,80,共5页Journal of Tianjin Normal University：Natural Science Edition

基　　金：国家自然科学青年基金资助项目(61601324);天津市应用基础与前沿技术研究计划资助项目(15JCQNJC01500)

摘　　要：设计了一套便携式、高精度的小型实时心电信号采集显示系统.采用STM32作为核心控制器,选用TI公司的ADS1298模拟前端IC芯片,二者构成系统的数据采集部分. ADS1298采集的信号通过SPI通信发送到控制器,然后利用蓝牙模块将数据发送到由LabVIEW搭建的上位机显示平台,最后进行数据处理,显示心电波形图.实验结果表明:该系统能够实现人体心电信号的高精度(μV/bit)、便携式采集,并能实时动态显示波形;利用现有的高效滤波算法EMD对所采集数据进行处理,结果显示EMD的滤波效果与本文模型基本一致.A portable,high-precision,miniaturized and real-time ECG signal acquisition and display system is designed.The STM32 is used as the core controller and ADS1298 of TI is selected as analog front end IC chip,which constituted the main acquisition part of the system.ADS1298 sends the collected signal to the controller through SPI communication.Then the bluetooth module is used to send the data to the display platform of LabVIEW host computer.Finally the data is processed and the ECG waveform is showed on LabVIEW.The experimental results show that the system can achieve high precision(μV/bit),portable acquisition and real-time dynamic display of ECG waveform.The existing efficient filtering algorithm EMD is used to process the collected data,and the results show that the filtering effect of EMD is consistent with the proposed model.

关 键 词：STM32 ADS1298 SPI 蓝牙 心电波形 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]