Research On Monitoring System Of ECG Based On ZigBee Wireless Sensor Network

With the obvious improvement of living standard and development of society, people pay more and more attention to their health. Heart disease has been one of the major factors to threat the health of people, which harbors the character of great danger and sudden occurrence, consequently it is very significant to study real-time heart electronic guardianship system. The traditional heart electrical guardianship system contains the drawbacks as follows:difficult in wiring, high cost and poor in scalability and portability. ECG check can show the electronic activity process of heart excitement, which is valuable to the study of the elementary function of heart and its pathology research. ZigBee is a new technology, which contains the following character:short distance, low speed, low power, low complexity and geography location function. Besides, it is prior at the aspect of equipment power, system cost, count-disturbance and BER. What's more, it is more and more applied to many fields, and it is appropriate to establish medical health care system at some area.This paper studies the system structure and key technology of WBAN and WSN, analyzes and discusses the generation mechanism, character and disturbance of ECG after searching plenty papers and magazines. Finally it raises a Monitor System of ECG system based on ZigBee technology. This system designs ECG detecting circuit and reasonable signal collecting node, which is based on the high quality micro-controller CC2431 from TI enterprise. The system can collect and transmit signal lively, record the change of heart electronic in PC and draw the picture. Meanwhile, the system designs the router node and the coordinator node, which is based on the CC2430, to transmit the heart electrical signal through the network of WSN based on ZigBee efficiently.The simulation proved that the system can collect and transmit the ECG of the patient, meet the prior demand of designing. The system is real-time, stable and scalable, which is valuable to medical apply to some degree. What's more, the design idea and concrete realization is beneficial to the further study about larger scale medical health care system.