A Design Of Wireless Sensor Network System Based On Multiplex Communication Technology

As a new kind of Ad hoc network,wireless sensor network(WSN)has the advantages over the typical wireless networks,such as providing coverage of a large area,easy to deploy,improved anti-destructibility.Medical treatment,detecting environment hazards and military surveillance are among many WSN applications.ZigBee technology which is based on the IEEE 802.15.4 standard is one new kind of wireless communication technology.It has advantages of low distance,low complexity,low power consumed,low data rate and low price.And it is one of the best choices that used in wireless sensor network.So ZigBee technology can give support and application to detecton of humiture and ph3 concentration in the storehouse of tobacco leaf.The thesis exhibits a design progress of a wsn system be used of detecton of humiture and fire alarm based on ZigBee technology.At first,the thesis makes a comprehensive analysis of system exploiture background and feasibility and puts forward the requirement of the system designing.Besides,it does a detailed research about MAC layer,physical layer and network layer of ZigBee technology.Then based on theory analysis,we choose the Microchip company's platform of system exploiture and make a particular explain of wireless sensor node's device selecting and hardware implement.The thesis also introduces the method of how to realize system's topology configuration.At last,the thesis presents how to use microchip stack and it runs several primary demo applications which can play an important role in guidance of compiling system software.