Design And Implementation Of Data Acquisition System For Wireless Sensor Networks Based On ZigBee

As the wireless sensor nodes need to be distributed in the external environment for data collection,batteries are usually used for power supply,so the energy consumption of the nodes must be reduced.ZigBee technology has become the most widely used wireless sensor network communication technology due to its low power consumption,low data rate,low cost and high reliability.Therefore,it is of great theoretical and practical significance to study ZigBee network communication technology.This paper studies,mainly analyzes and improves the traditional ZigBee routing protocol,and the Wireless sensor network is self-organized by the sensor nodes which in the tested area,realizes the wireless sensor network data acquisition system based on ZigBee.And it make the Wireless Sensor Network Data Acquisition System based on ZigBee come true.The specific research contents are as follows:Firstly,this paper analyzes the requirements of the whole Wireless Sensor Network Data Acquisition System based on ZigBee,and determines the main function of the system and the overall design architecture.And the system is divided into three parts:data acquisition module,wireless communication module,host computer storage and display module,then design and implement the three modules of the system.Then,this system analyzes the protocol architecture of ZigBee technology,the network topology,the network address allocation mechanism and ZigBee routing policy in ZigBee sensor nodes.After improving and combining the Cluster-Tree routing algorithm and AODVjr routing algorithm,the network topology of ZigBee Tree Cluster network was established.This paper make some improvements to reduce the end-to-end delay in the ZigBee network,and balance the energy of the sensor nodes in the network.And the effectiveness of system is proved by the NS-2 simulation software.Based on the main control chip of ZigBee,the circuit design,fabrication and debugging of ZigBee terminal node,ZigBee routing node and ZigBee coordinator node in ZigBee wireless sensor network are realized,including ZigBee controller module,sensor module,wireless communication module and energy supply modules.Finally,the environmental data of temperature,humidity and light intensity collected by the ZigBee wireless sensor network are stored and processed in the real-time display software of the host compute.