Design of Intelligent Surveillance System Based on Wireless Video Trans- mission and PID Multiplexed Control Strategy

A kind of wireless video transmission intelligence surveillance system is developed to perform work normally done by human being in hazardous environment, narrow space, as well as chemical and toxic places. This system consists of two main parts: a host computer with monitoring software and a mobile intelligent vehicle. The host computer software can provide real-time display of video, temperature, humidity, light intensity and other environmental information collected by the intelligent vehicle, and can control the movement direction, movement speed of the intelligent vehicle as well as the camera platform angle with control buttons. The vehicle can collect images and sensor data, and transmit them to the host computer via wireless fidelity (WIFI). The speed of intelligent vehicle is regulated by joint control of position type proportion integration differentiation (PID) and bang-bang control strategy. The video is captured by universal serial bus (USB) interface camera, and transmitted to the host computer by WIFI for real-time display. The testing results show that the system can not only display clear video images, but also accurately display the dynamic data of sensors. At the same time, the host computer can reliably control the multi-directional movement, grabbing obstacles and changing camera platform angle of the intelligent vehicle.