Research Of Wireless Sensor Network Based On ZigBee Technology

With the rapid development of technology, human has been in information era. Obtaining information is the precondition of realizing informationization while one of the most important tools which were used to acquire information is the sensors. The wireless sensor network which combines sensor technology, wireless communication technology, embedded computer technology, modern network and distributed information disposal technology together is a multi-study, highly crossed new research fields. It plays an important part in campaign people communication, invironmental and weather control, disaster detection, intelligent building, radiation inspection and so on. The IEEE802. 15. 4 and ZigBee protocol offer the criterion for wireless sensor netwok.ZigBee protocol is constituted of IEEE802.15.4's PHY and MAC layer, ZigBee network layer and application layer. because the node has some characteristics such as low cost, small volume, limited energy and limited communication, the network's characteristics are the system supporting low cost operation, easily realization and very low power consumption.The paper introduced the research background of wireless sensor network in china and out, it also analyzes 802.15.4 protocol and ZigBee technology. In this paper, the scheme and procedure about the design of wireless sensor network are proposed, the slotted CSMA/CA algrithm which is used in wireless sensor netwok is theoretically analyzed and computer simulated by language C. We analyze the arithmetic's simulation result theoretically.