A Multi-node Control System For Building Based On ZigBee

To fulfill the demand of multi-node, network control and less wiring for modern building control system, the paper designed a new control system based on Zigbee wireless technology. This control system consisted of a host controller, multi master nodes ,route nodes and sub nodes. The host controller communicated with master nodes through Ethernet, and each master node constituted a tree Cluster Tree with route nodes and sub nodes who communicated with master nod by Zigbee.This paper describes the structure of the whole system and the corresponding design of hardware and software. giving Details of the Ethernet communication protocol stack required to transplant. Wireless PA, LAN circuit design and test results of the comparison.The cluster tree type network of Zigbee implementations is described. also the creation and maintenance of routing tables, and one method of network address assigning included. and then the concrete realization of the method in low-power considerations of terminal equipment is given.This building multi-node network control system is to verify that the main significance of ZigBee wireless technology based on building control feasibility for building multi-node multi-objective control.It promoted Ethernet technology and ZigBee wireless network control technology in new buildings, especially in mobile, multi-network, multi-section control applications.