Resarch On Intelligent Home Furnishing Security Monitoring System Based On Wireless Sensor Networks

Intelligent home furnishing security monitoring system use wireless communication, embedded technology, sensor technology to monitor the indoor environment, the system can not only prevent illeage intrusion, but also can realize remote assistance of family members.This paper firstly introduces several common short-range wireless communication technology. combined with the characteristics of intelligent home furnishing security monitoring system, selecte ZigBee network as network technology to build the family control network. And compared of three common ZigBee network topology structure, star network topology is chosen as the final network topology of home furnishing security monitoring system.This paper construct a double-layer network smart home monitoring system based on ZigBee technology. The lower layer network is a indoor environment parameters (including temperature, CO concentration, the smoke concentration) and other functional parameters (anti-theft, remote monitoring network.) monitoring network,which composed of microprocessors and sensors, and the ZigBee RF chip,the upper layer network can realize remote control of the user through GPRSThe main control center and each node choose STM32f103RBT6as the control chip, whose kernel is Cortex-M3.Radio frequency chip choose CC2520chip. The process of monitor and control of home furnishing security monitoring system were mostly done at the interruption, use Cortex-M3kernel CPU can quickly respond to interrupt, improve execution efficiency. Complete the software design of the system, including parameter setting program, data compression, filtering and transmission program design.Parameter program can set different function parameters for different users or different environment,and can set different alarm threshold for the same function parameters.Data transmission program design a unfied communication data format, ensure that data can be reliable, accurate transmission.Finally the security monitoring system functions were tested, test results show that, the system can collect real-time field data, alarm quickly and accurately in the presence of alarm events, and can carry on the remote state and data query through the mobile phone, remote monitoring function provides convenience for user who wants remote operation.The system runs stably, achieves the desired design goal and can meet the needs of ordinary households.40charts,11tables,60references.