The Node Based On Zigbee Technology Design And Clustering Algorithm Research

Wireless sensor network(WSN) Wireless sensor network (WSN) is a new technology based on sensor technology, embedded technology and network communication technology. The data collection, processing and transmission, it acquisition the data form surveillance area, processing and transmission Has been regarded as a promising method of reliable civil and military, or monitoring of environmentally harmful or hazardous conditions, ZigBee technology as an emerging technology in wireless sensor networks, With its low cost, low power consumption, short delay advantages can develop rapidly and expand into every field, its application prospect is relatively broad. The node is an important component unit of the ZigBee network, because the nodes are deployed in harsh environment, the power of the nodes usually can’t be recharged or replaced in the network. Therefore, energy efficiency is the key of life and cost of the ZigBee network. Only solve the energy problem, the ZigBee network to play the biggest role in the application.First of all, First of all, in this paper, We through consulting a large number of literature, Simple describes the characteristics of the wireless sensor network and its application field and situation at home and abroad, Detailed introduces the concrete structure zigbee2006protocol stack and each layer of function, the Second, through the analysis of system structure of zigbee protocol stack and the research design scheme of zigbee node, According to the specific requirements of the node design, select the appropriate hardware components to complete the design of zigbee nodes and Gateway Interface board, and production of the PCB. Finally, in order to guarantee the node in the later operation can play the best performance, We design the node test scheme to ZigBee node.In the ZigBee network, In the ZigBee network, node join or leave the network for a variety of reasons, so that the entire network topology changes frequently, Nodes manage is very difficult, Produced a series of problems of the rapid reduction of the energy of the node and the packet loss rate increases, thereby reducing the life cycle of the entire network, in order to effectively solve these problems, in this paper, we review a large number of documents base on cluster, research of traditional cluster protocol, And induction its advantages and disadvantages, Strive to find a good clustering algorithm, through the improvement and optimization, Propose a new clustering algorithm, The design of this algorithm is improved based on the LEACH algorithm, the main idea is that all nodes containing a circular area. According to the actual needs Will the entire network evenly divided. Then, selection of cluster head nodes based on the residual energy of nodes and node location information to the, then cluster corresponding rotation According to actual need. The main design goal is to reduce the energy consumption of nodes, Improve the network life cycle and balanced network node load.After the completion of the After the completion of the algorithm, in order to compare the advantages and disadvantages of the algorithm with the classical clustering algorithm LEACH and existing ZigBee routing protocol AODV algorithm. We carried on to the simulation analysis, The main compare their network life cycle, the total network energy consumption, the simulation results show that the algorithm is a significant role in the balance of energy consumption in the network, and can extend the life cycle of the network.