Based On The Zigbee Wireless Sensor Network Technology Research And Application

Wireless sensor network is a hot front edge research field and has gained internationalattention with multidisciplinary and highly integrated knowledge. Research on wirelesssensor networking technology is very important in this field. Zigbee is a kind of low speedwireless communication technology and it’s very suitable for wireless sensor network.But Zigbee wireless sensor network has the following problems to be solved atpresent: First, now most Zigbee protocol uses improved AODV algorithm as its routingalgorithm which adopts “flooding” mode as its data broadcast mode. It can easily form a“broadcast storm”; second, in contrast to Zigbee’s intensive industry application,performance simulation research based on Zigbee wireless sensor network is not enoughnor systematic; third, compared to numerous hierarchical principle analysis, there are fewopen-source materials of specific project implement using existing Zigbee protocol stack.This paper aims to solve the three problems above. First, based on hierarchicalnetwork node address allocation feather of Zigbee protocol, and making full use of nodes’neighbor table information, I propose two optimized route algorithms apply to Zigbee:Zigbee On-tree self-clearing broadcasting algorithm (ZSR) and Zigbee On-tree forwardingnode selection algorithm (ZFS). This paper described the calculation process of the twoalgorithms and confirmed their theoretical feasibility. Then I compared them with existingZigbee route algorithm by series of Matlab simulation and proved my algorithms’ validityin Zigbee data broadcasting. After that, I did some performance simulation using OPNETon key technologies of Zigbee networking including failed node self-healing technologyand mobile node switching technology. At last, I analyzed TI’s ZStack-1.4.2protocol stackfrom application’s point of view and designed a Zigbee wireless sensor network systemwith multi-tasking capability based on this protocol stack.