The Research Of Home Care System Of Community Based On ZigBee

With the development of living standards, the people's environmental requirements will constantly improve. For the reason of wireless sensor network's characteristic that was low-cost, small size, it widely used in medical, household, industrial, military, environmental and somewere else, the extensive application of wireless sensor networks become a hot reach field in recent years. The characteristics of wireless sensor network node device was high standard density nodal point, flexible topology structure, low storage and computing power, As the productive forces develop, the ZigBee technology appeared in the demand of society, due to its low rate, low power and low complexity of the short-range wireless communications, ZigBee technology adpt to monitoring, control and lot of fields. Fourthermore, this technology together with sensor network technology allows the family health care and security systems become simple and feasible.This article describes a technique based on ZigBee about wireless sensor networks for remote monitoring alarm systems, the network design node implementation of the system fully reflects the advantage of ZigBee technology. This dissertation first introuduced the currrent development situation and research background in domestic and abroad about the monitoring systerm, especially telemedicine significance for patients. Then focuses on wireless sensor networks and ZigBee technology, Due to the fully development of technique, the increasingly sophisticated sensor technology using also wireless sensor network induced to more and more field touch in it, and it widely absorb people's attention. Dense wireless network is the wirelss communication technology which using densenly sensor nodes and self-organization network, it's mainly function reflected in the use of date acquisition, intergration and transmission of information prosessing. Althought bluetooth and other traditional wireless communications technology is still the hot research focus by people. As birth of ZigBee technology, it becomes more competitive in the wireless sensor network protocols. The artical apt to descripe this ZigBee pension community systerm. By using ZigBee technology nodes designtion realized the hardware and software system implementation, which will be discussed in detail. The nodes include controller module, RS232 module, wireless module, network communication module, alarm module and so on. In this systerm, the alarm signal generated by the alarm module, and pocessed by the signal progressing operation, then obtain the date created by radio frequency modules and send it to another network device, which have different function in order to responsible for the formation and maintenance of the network, routing protocal, simultaneous localization and something else. Network communication module is responsible for the various nodes of the network device to communicate with ZigBee network protocol. In order to exchange information, this systerm mainly designed by CC2430 and the date generated by the alarm module will transmate to other devices from the CC2430 wireless modules. Eventually, the network equipment through the RS232 sent the information to the host. Then from the received-date-host pass the information to the monitoring center via TCP. In the care center these date will store and analyze.According to the contained device information, the center compare to the datebase of patients and device information in the initial installation of equipment and achieve the alarm function. So the patients can receive timely warning of the rescue,the systerm composed of number of wear at the body node,routers and the coordinator,This systerm is undoubtebly provide the pension elder a great life and safe assurance in community, So this systerm has great significance on rescue the sudden diseases.