The Design And Implementation Of Wearable ECG Monitor Device

Since heart and blood vessel problems can cause cardiovascular disease,and the age of onset is younger,in recent years,the research on cardiac monitoring system has attracted the attention of many clinicians at home and abroad.With the acceleration of urbanization and population aging,the population of sub-health status of Chinese residents has shown an increasing trend.In order to do a good job in aging social medical services and to monitor the sub-health of the heart,it is necessary to detect and prevent potential heart problems as early as possible.Based on the communication method of low-power Bluetooth 4.0,this thesis designs and implements a wearable ECG signal acquisition and display system,and uses the existing ECG signal processing method to build an ECG node and a data transmission platform.The monitored human ECG signal is transmitted from the transmission to the mobile terminal for display,and finally achieves the purpose of monitoring various symptoms of arrhythmia.This thesis mainly works as follows:(1)Combining the characteristics of wearable devices and ECG signals,the functional requirements and non-functional requirements of wearable ECG monitors are analyzed,and the overall design of software and hardware components is based on this.(2)According to the performance parameter requirements,the devices required for each functional module are selected and combined.The ECG signal acquisition circuit based on ADS1191,the CC2540 Bluetooth module circuit and the corresponding power supply circuit and SPI hardware connection circuit are designed in detail.(3)According to the functional requirements,the software system of ECG monitor was designed and developed,and the ECG monitoring software of ECG data acquisition and transmission module,Bluetooth communication module,data processing module and waveform drawing module was designed in detail.(4)Extracting R wave using differential threshold algorithm.(5)Through the real experimental environment,the prototype of the ECG acquisition system was tested to verify the effectiveness of the design.