Intelligent video surveillance system study in this paper is constituted by CCD cameras, infrared pyroelectric sensor,
stepping motor and the computer. And make In-depth study for portable intelligent monitoring system from two aspects
of hardware and software. compare and analyse between CCD image sensor and CMOS image sensor, key research on
the CCD various' characteristics and performance indicators; investigate for the infrared pyroelectric sensor structure,
characteristics, put forward further method to improve pyroelectric sensor performance, response degree. On software,
according to the calculation of moving object detection, through controll the step motor, can tracking video real-time or
finish videoing,video Real-time. Intelligent video surveillance system use infrared pyroelectric sensor as access switches,
make sure the foolproof of monitoring site safety system.