The Research And Application On The ZigBee Technology In The Wireless Sensor Network

As the development of wireless communication technology, the WSN (wireless sensor network) has been used from the field of military to ISM (Industry, science and medicine), which plays an important role in these areas. The technology of information collection done in wireless sensor network has been developped from simplify to integration and network. ZigBee is a wireless tenology with low speed, which is mostly used in WLAN (wireless local area network). ZigBee is usually used in the condition with small datas, low data rate, small scope, high security and low power operation.This rsearch selected ZigBee technology as the software basic of the WSN, designed the WSN network platform based on ZigBee technology, developed the network communication protocol. The main contents have been researched are as follow:(1) Study the character, system framework and the key tenology of the WSN,research the system framework of ZigBee, whose network algorithm, address distribution algorithm and route algorithm have been analysed completely.(2) The ZigBee technology is mostly used in WLAN (wireless local area network), whose distance from node to node is short. If the distance could be enlarged, the node number can be reduced, the cost can be cut and the communication scope can be broadened also. The software of ADS is used to design and silulate the critical circuit in this paper, which completes the purpose of enlarging the communication scope.(3) In the WSN, the quality of channel detection theory impacts the communication effi-ciency. As the protocol which achieves channel detection theory in the network, the CSMA (carrier sense multiple access with collision avoidance) is being used in the WSN. In this paper, the character of CC2430 has been reaearched, the determinant regulation in the channel detection has been expatiated, and a whole CSMA theory has been completed last.