Development And Research Of Smart Security System Based On WSN

With the development of society,people's awareness of security has become a part of people's concept.Therefore,design and development of smart security system has important value for safety.The paper designs and develops a smart security system based on Zigbee and Linux.The system mainly includes wireless sensor network of Zigbee,embedded Linux server and 3G SMS alarm module.The system achieve interaction between user and server by the B / S structure.Users can remotely view video and sensor information through the browser.The main work of the paper is as follows:Firstly,establish a sensor network of smart security system(including detection of human,smoke,gas,door).build a complete ZigBee network and achieve the communication through Z-stack.the terminal node transmit data of sensor to the coordinator node through the routing node.Than the coordinator send the data to users through Linux and the MJPG-Streamer server.Secondly,establish Web server on the platform of embedded Linux system.transplant Linux,JPEG library and MJPG-Streamer on the Contex-A8 kernel.The MJPG-Streamer server is for secondary development.completed the process of receiving and processing sensor data,SMS alarm mode,the design of user interface and achieve the interaction between the user and the server.Complete the functions of image acquisition,compression,storage,transmission and display through USB camera.the users can remotely view the video image and the sensor data.Then,design the alarm mechanism of home and no-home mode.establish a smart alarm module,which 3G module send text messages for users by SMS once the home security problems.Finally,design and develop the hardware of the system,including the terminal node hardware circuit board and embedded Linux development board.