Design and Realization of Omni-Directional Mobile Detection Alarm System Based on ARM11

Based on B/S architecture,a full range of motion image detection and alarm systems is designed.Linux system is translated into ARM11platform as the operating system platform.Via USB camera capture front-end image,the collected image were sent to moving target detection module. Using image sequence frame difference method to detect whether a moving object exists,in order to prevent the emergence of false alarms.The background reference frame were update timely.Then the image data were compressed by H.264compression module,and the compressed image data is transmitted to the client for decoding display;and client end uses CGI dynamic web technology to control monitor behavior.Experimental results show that the monitoring system can accurately detect the moving target,and the image is clear, smooth PTZ control,which can fully meet the users daily requirements,and can be widely used in transport,schools,banks,supermarkets,buildings and some important events.