可穿戴心电监护设备设计与实现

摘要

为了满足心脏病患者日益增长的心电监护需求，设计了一种可穿戴式的心电监护设备来满足患者日常生活的心电监护功能。设备设计包括硬件和软件2部分，硬件方面采用柔性织物电极、AD8232芯片和STM32微控制器实现对心电信号的采集、A/D转换和传输功能；软件方面借用小波变换在心电信号去噪和识别方面的优势，获得清晰的心电信号和心率，并实现对症状的初步诊断；最后设计了基于 LabVIEW平台的友好人机交互界面，可以直观、清楚的显示心电信号的实时波形，当前患者的R R间期和心率参数。利用本设备对几位志愿者进行测试，得到了良好的结果，可以实现患者日常心电监护。%In order to meet the growing demand of patients with heart diseases for ECG monitoring, this paper designs wearable ECG monitoring equipment to achieve the ECG monitoring function of daily life for patients.The equipment design comprises hardware and software design.In terms of hardware,the flexible fabric electrode,AD8232 chip and STM32 microcontroller are used to implement the functions of ECG signal acquisition,A/D conversion and transmission;In term of software,the advantages of the wavelet transformation in ECG signal denoising and identification are utilized to obtain a clear ECG signal and heart rate,and realize the preliminary diagnosis of the symptoms.Finally,a friendly human computer inter-action interface based on the LabVIEW platform can display real time ECG signal waveform,the current RR inter phase and the heart rate in patients intuitively and clearly.Several volunteers are tested with the equipment. Good results are obtained.The equipment can realize patients'daily ECG monitoring.