The Research Of Network And Routing Methods Based On Reconfigurable ZigBee Network

IEEE 802.15.4/Zigbee specification which targets low data rate, low power consumption and low cost application is suitable for Wireless Sensor Network as its wireless communication technology. At present, ZigBee network node has poor adaptability in the construction of WSN using IEEE 802.15.4/Zigbee as the penetration of the 2.4GHz frequency is limited, once the environment around the node changes, the node's communication efficiency reduced greatly. In this paper, we present a reconfigure ZigBee network to solve this problem.The paper described the context, aim and the significance of the subject study at first. Secondly, it introduced the key technology of ZigBee network layer. We develop an NS2 simulator for Cluster-Tree WSN. The impact factors and level to the network performance were discussed. Based on the Cluster-tree network, the paper proposes using Cluster-Tree + AODVjr routing methods in order to adapt to reconfigurable ZigBee network. Simulation shows that reconfigurable ZigBee network has better stability and network penetration; it has a positive significance to the system flow balance and improves the system delay.In order to verify the practical effects of reconfigurable network application, this article gives the software and hardware implementations of reconfigurable network, which software is the focus of this article by using an example of battery production control. In the software, according to the characteristics of ZigBee network, the article proposed APDU data package which improved real time interactive communication between the network nodes. This paper also gives the way to achieve the node's watchdog and system wake-up which improved reliability of a single network node itself. Meanwhile, the article also shows how to implement the software in the PC software integration. Finally, in hardware implementation, the paper presents the network node hardware design.The original design goals have been achieved by the subject software and hardware design and field testing. The experimental hardware platform and a basic multi-task multi-protocol real-time system framework have been constructed. Future developers can easily create a network control system based on ZigBee and develop other application tasks on the platform without understanding the ZigBee protocol, which make references and foundation for future research.