| With the improvement of living standard residents have higher request for the residential area, and intelligent district comes. Intelligent district fuses the computer technology, communication technology, multimedia technology and some high-tech, it can support more comfortable, securer, more convenient service for the residents. This thesis based on the background of intelligent district, aim at designing the surveillance system based on Zigbee, and mending the Zigbee route protocol which can influence the performance of intelligent district.This thesis introduces the background, the development status of internal and overseas, sum up the development trend of intelligent district; put forward the design scheme of intelligent district, introduce the hardware platform and the software architecture about home sub-surveillance and camera sub-surveillance, display the achievement of some software. This thesis analyzes the implement of intelligent district system, explains some key technology and flow. This thesis aims at the wireless sensor network technology of intelligent district, advances an improved sensor network routing protocol named Multiple Path Assort Direct Diffuse. This protocol bases on direct diffusion, combines the advantage of multiple path route, adopts multiple route transport mechanism, adopts delay evaluation mechanism and data classification handle mechanism, it's more suitable for the intelligent district wireless sensor network application. This thesis describes the arithmetic of Multiple Path Assort Direct Diffuse, makes NS2 in charge of the evaluation of it. The simulation results indicate that Multiple Path Assort Direct Diffuse protocol can improve the energy efficiency of the network, obtain a better performance of delay and higher rates of the groups receive. |