Intelligent Security System Design Based On Wireless Network

With the development of social economy,the demand for domestic life is gradually improving.The concept of "smart home" was put forward with advances in science and technology,and has been paid much attention since it appeared.Security system is the most important part of the smart home system,the designer has always attached great importance to this part of the design.Security issues have been the key problem concerned to the user,the same is true of the safety of domestic life.At the moment,the pace of life continues to accelerate,the office workers in most of the time basically do not pay attention to their home situation.Therefore,this paper assumes that the user can make full use of the phone or computer and other electronic equipment at handfor remote monitoring and control of the situation at home.When the abnormal situation occurs,the phone will receive alarm information.At this point,the user can watch the security condition of homethrough the network and take appropriate remedial measures.The home security system is designed for the majority of ordinary home users,therefore,in the design should first consider the low cost,low power consumption and other factors.In this paper,the design of smart home security system will be low-cost,multi-functional,intelligent as the purpose.In this paper,the advantages and disadvantages of various wireless local area networks are compared and analyzed.The design of this system uses ZigBee network and WiFi network.The task of ZigBee network is to complete the network of the system,which is designed by the star network.The task of the WiFi network is to receive instructions from the mobile phone to the gateway.In this paper,we use STM32F103 as the main controller of the system gateway,use the μC/OSIII operating system to schedule the gateway and the terminal nodes,and use the GSM module to realize remote alarm and control.The terminal node includes: intelligent monitoring node,intelligent electronic door node,intelligent sensor groupnode and intelligent socket node.To achieve the functions of this system are:(1)when someone illegally entered through the GSM remote alarm and open camera monitoring home;(2)electronic door supports fingerprint,password,remote and other ways to unlock;(3)when the system detects smoke,flame or harmful gas,will remote alarm and automatically open fan;(4)the system can make real-time detection of household appliances electricity through the smart socket,and ensure the safe use of electricity.