Design Of Smart Home Security System Based On Zigbee Network

Smart home security system is an important subsystem of smart home system.A good smart home security system can automatically and efficiently monitor and alarm gas leakage,fire,burglary and other dangerous situations to protect the household safety.Combined with demand,this paper designs a smart home security system based on ZigBee network.The system uses ZigBee star network topology to transmit data between terminal nodes and coordinators.The coordinator is connected with the host computer by serial port,and the program controls the host computer and the mobile phone to monitor the environment data in real time.Firstly,the research background and significance of smart home security system at home and abroad are introduced,the development status at home and abroad is analyzed,the research content is determined,The key technology of ZigBee and the principle of AES security algorithm are introduced in detail.Secondly,the hardware system of smart home security system is designed,including coordinator,access control system and terminal monitoring node,and the circuit schematic diagram of each part is given.Then,the software design of smart home security system is carried out,including coordinator program,access control system program,terminal data acquisition program,ZigBee networking program,and the upper computer program is written by VB.Finally,the function test of the smart home security system prototype is carried out,including terminal node temperature,flame,natural gas and infrared data acquisition,fingerprint identification test of access control system,ZigBee networking test and so on.The test results basically meet the requirements.Based on the smart home security system of ZigBee networking,the data transmission of the whole network adopts ZigBee wireless transmission and management,which solves the problems of complex wiring and low efficiency in the traditional smart home security system,and also enhances the stability and operability of the system.