Development Of Telemedicine Monitoring System Based On Wireless Sensor Network Technique

The wireless sensor network is a new network communication technique that integrates the sensor, the embedded computing, communication, distributed info-processing, the microelectronic manufacturing and network technologies, etc. It can monitor, sense, acquire and transmit various environmental information or monitored objects'information in network monitoring regions in real time. It has the features of low-cost, low-power-dissipated and easy-distributed. In many areas of military, national defense and national economy, it has a broad application prospects and spreading potentiality, especially in the medical treatment. It can be used for acquisition of the patient data, tracking treatment, mobile observation, and telemedicine. Its deep research and spreading application will promote the info-construction of medical treatment in China. It can speed up the development of related domains and subjects, and further enhance China's overall nation power accordingly.The paper deals with the monitoring system based on ZigBee wireless sensor network technique in details. The system adopts very low-power MSP430 single-chipped microprocessor and CC2420 radio frequency chip. And the CC2431chip is used for node positioning. The system transplants the standard protocol stack of ZigBee 2006. By the upper computer software and programs of various physiological data acquisition, the physiological data of warded people, such as the pulse, blood pressure, blood oxygen saturation and electrocardiogram, are gathered by the PC software in real time, then the collected data are transmitted to the telemedical monitoring center through the wireless sensor network. The data information of each node, including the location and health status of the warded people, can be displayed by the monitoring center software. It makes timely and effective medical guidance possible. The system is small- sized, low-power-dissipated and strongly compatible and can be connected to network with different hardware platforms. The author mainly introduces hardware circuit design of processor module, data acquisition module, and wireless communication module, implements the physiological data acquisition program, transplants Z-Stack protocol stack, positions and carries through the experiments, and debugs. During the positioning process, the system has stable signals and good communication status. The received data are accurate and the precision of node positioning is high. The design achieves the demands of system positioning. Experiments prove that the system has good stability and security. It has very high practical value and promoting function in telemedical monitoring field in the future.