Design and Implementation of Information Acquisition System Based on New Wireless Sensor Network

In order to boost the data acquisition efficiency in the practical application, realizes video surveillance via wireless sensor network, this paper presents an information acquisition system based on new wireless sensor network, designing and implementing an integration of two networks which are ZigBee and Wi-Fi. It exploits each advantage of different networks focusing on information acquisition and transmission under particular working environment, breaks through the limitation of single wireless communication both in function and performance, and adopts mobile terminal as the control mode. This paper elaborates how to collect information on temperature, humidity and smoke concentration via ZigBee network and transmit video signal via Wi-Fi network. Data from multi-terminal nodes are aggregated and uploaded to the intelligent gateway including coordinator, and the webcam built in gateway is used to collect video information which is transmitted to terminal devices. A custom designed Android graphical user interface (GUI) application is also developed to enable automated and manual control of the system and users will capture the real time situation through Android GUI application.