The Research And Realization Of Zigbee Network

Zigbee network is a short-range low-rate wireless personal area network (Low-rate wireless personal area network, the LR-WPAN) constructed based on Zigbee technology, such a low rate wireless personal area network, its network structure is simple, low cost, with limited power and flexibile throughput. LR-WPAN principal goal is to achieve the installation easy, and reliable data transfer, short-range communications, a very low cost and power consumption, and has a simple and flexible communications network protocol. It can be used as industrial control, environmental monitoring, business monitoring, automotive electronics, home digital control, and other families of the low-speed network based the framework network. The underlying network protocol used is IEEE802.15.4 standard.This paper presents a zigbee technology based on the wireless communications network architecture, that is zigbee network. The network system designed the overall structure of system node including hardware platforms, node application software platform. Using the latest system-on-chip CC2430 chip as the hardware design core. To achieve the expansion of binding table to realize binding table unlimited storage as well as real-time observation network and node information, designed the coordinator node and PC hardware communications interface and coordinator node upper computer software platform. The network system uses MSSTATE_LRWPAN protocol stack as a network communication protocol, the protocol stack source completely open and easy to transplant, easy to maintain, easy expansion, small code space (about 32 K). Test results from the hardware, hardware nodes have high receiver sensitivity, ideal communication distance;Test results from the network, on the basis of the agreement in constructing the network speed, low latency network communication, high network data transmission efficiency, good networks self-organizing and self-repair capability and has a good network scalability.Main contents of this paper are:Lucubrated in the implementation mechanism of MSSTATE_LRWPAN protocols based on the newest zigbee comunications standard,proposed zigbee network organizing programs,realized zigbee tree network;Using the newest zigbee standard chip CC2430 as the kernel part of network node,design and realization of low-cost wireless comunication module;Achieved the design of comunication interface and comunication agreement between coordinator and PC; Design and realization of a long-range wireless monitor and data transmition network software platform named coordinator upper computer soft. On the platform,implement network and node information acquisition,nodes dynamicly binding,node data transceiving.