The Smart Home Security System Based On ZigBee Techology

The concept of smart home is proposed early.However,it can’t be realized limited by the level of science and technology and high cost. In recent years,networked and intelligentized home control system which combined with automatic control system,computer network system and network communication technology has been put into use successfully.Especially the application of wireless network technology in the smart home system vigorously improved technology,greatly reduced the cost,and further promote the intelligent household system development prospects in the market.Intelligent security system is an important subsystem of smart home system.Home security system with the character of automatic,efficient and timely is significant in preventing gas leak and explosion, fire, theft, robbery and protecting the home when homeowners is out of. Newer ZigBee technology have obvious advantages of low cost and consumption,ad hoc,embedded devices freely,strong extension performance, detecting and repairing the fault rapidly and accurately. Therefore,the paper has designed a Smart Home Security System based on ZigBee technology.This paper introduced the advantages of ZigBee technology, the network topology structure, protocol architecture and data transmission mode. Wireless security network structure type is designed to cluster network topology considering the home environment and the problem of cost and consumption.Because CC2530Soc produced by TI company compared with CC2430has larger cache and the storage capacity and communication distance up to400m,so CC2530is chosen for setting up wireless security.Household environment data is gathered by end point,collected to coordinator through wireless transmission and multiple hops routing,transmitted to the monitoring center. In the monitoring center the critical alarm value is set up to realize the security function of the system. This paper chose and design the model of the security sensors, describe the design scheme and implementation functions of power supply circuit,antenna,peripheral circuit of CC2530and GPRS module.Then this paper go into more detail on networking process of ZigBee,working of Z-Stack,data transmission on serial port,communication between the points and data and information gather of end point.The upper computer is designed to use Visaul Basic6.0to realize the real time data display interface,and finish the remote alarm functions through GPRS network. In the end of this paper have a simple test about the wireless sensor network.The smart home security system designed by this paper can organize networks automatically and have high flexibility. The point can be to join and leave the network at any time and change position flexibly.Sensor network has large size, less blind spots,higher accuracy and high robustness.Therefore,the system has a broad application prospect in the market.