Research And Application Of Wireless Sensor Network To Smart Home Solution

With the development of electronic information technology and computer network, nowadays,there is a new trend for Smart Home to realize the family informatization, networking.The system of Smart Home can provide a kind of easier,ordered and effective life style to human,and must be the development tendency for future inhabitancy mode.In this way,the system of Smart Home is becoming a rising research field gradually.Because of its character of low power consumption,high self-healing ability etc,ZigBee technology, raised for low-rate wireless communication,is widely used in wireless sensor network and becomes a research focus.So that,the paper gives one solution of smart home based on the technology of wireless sensor network and Internet.This paper presents a smart home network remote control plan,based on the analysis of current situation of smart home technology at home and abroad and the research of embedded Intemet remote control technology.The plan devides the control system into three parts:user remoting control end,embedded home gateway and the part of control sensor nodes of home network.Home gateway,as the core of the smart home network,is the home information network portal and manager.We bring out a way to build an embedded platform based ARM S3C2410X and Linux OS to develop home gateway to access to ZigBee network,MCU circuit,Internet interface and Auxiliary circuit and are made.Designing the home device control model with low power consumption ATmega128 MCU and CC2420 chip matching with IEEE 802.15.4 accesses to home gateway.As the software of the whole system,transplanting embedded Internet,implementing ARP,IP, ICMP,TCP protocols and Z-Stack,This paper also setup a ZigBee node.After analyzing the implementation of TCP/IP and Z-Stack,this paper raised the gateway protocol model of between ZigBee based wireless sensor network and Internet based TCP/IP,and programmed in embedded C to exchange packet on the application layer.At last a process programmed in c++ based Qt libreary and linux Sock is used to test gateway system's communication between Internet and ZigBee.In the end,through debug and test,this system could satisfy the requirement, implements the connection between Internet and ZigBee simply and also provides a new idea for the next.