A Design Of Automatic Meter Reading System Based On ZigBee

Automatic meter reading system is a kind of automation management system which no workers to a site can finish transcribing user's meter data,and adopting the modern communications technology and computer technology this system can read and process meter data automatically, solved the traditional single function, metering mode, simple structure, bad real-time accuracy, low time-consuming, and other issues of human resources is greatly reduced the cost. This for power system economic benefits, informationization level and even management decisions have very important significance.ZigBee technology has close, low power consumption, low rate, low complexity, low cost characteristic, these advantages make ZigBee technology for the development of the automatic meter reading system provides better choice.This paper includes the specific as follows:First, introduce topic background, discussing research status from domestic and abroad, clear the wireless meter reading system the huge development space, and summarized describes the main characteristics and ZigBee technical specifications.Secondly ,ZigBee protocol stack, research, from shallow and deep ZigBee physical layer, detailed instructions for MAC layer, network layer and application layer function, ZigBee protocol stack of the analysis is the foundation behind the software design.Then,we in-depth study difficult problems in the processof system design, which are ZigBee network topology and routing. Through the analysis of several routing ways, and Combined with the application of the practice ,we chose the Cluster-Tree + Z-AODV routing ways.Finally, ZigBee meter reading system are the overall design, hardware circuit including CC2430 peripheral circuit design of ADE7755 chips, electricity measurement circuit design, switching power circuit design, RS-232 interface circuit design, software design includes introduction gathering node electric communication protocols, key concepts and ZigBee protocol stack tuner, routers, acquisition terminal program design process. In the function of each node identified and perfected the node after ZigBee program for automatic meter reading system commissioning, maximum transmission inside the building, send and receive 85m distance to the success rate reached 99.5%, realize the function of automatic power offending electricity dormitory, achieve the desired goal.