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In recent years, embedded technology has been rapid development, with low power consumption, small size, low cost, stable performance, easy on-site installation and other features and advantages of embedded system gradually in the field of smart home, industrial site, and Security Technology access to a wide range of applications. Video surveillance technology is a set of network technology, multimedia technology and computer technology in an integrated surveillance technology. Because of its convenient, intuitive, information rich content has been widely applied to electric power, transportation, smart buildings and other places. Most of the traditional video surveillance system using wired transmission, however, the high cost of network cabling, monitor the location of the limitations of the wired video surveillance system applications are extremely limited. Microwave, Wi-Fi coverage, satellite, and wireless access there building complex, longer duration, cost and other issues. Over the years, video surveillance has not found an effective solution. With the large-scale construction of 3G networks in China and commercial, through 3G technology makes video surveillance gradually get rid of the constraints of time, space, long distance and real-time video transmission. At the same time to support the the 2Mbps high-bandwidth video signal transmission quality improved significantly, anytime, anywhere, on-demand video surveillance possible. 3G technology, video surveillance will become a trend in video surveillance market. Research and achieve the wireless video surveillance system based on 3G technology. Embedded video capture terminal placed at the monitoring site, collected in real time via the USB camera video data encoded compressed using the H.264 video standard, and transmitted to the monitoring center via 3G wireless network for real-time monitoring. Embedded system hardware design and embedded Linux development and porting principle, embedded hardware platform to build and boot code transplant, transplantation of the Linux system kernel, root file system system to do the appropriate hardware modules driver implementation; The video embedded Linux development and H.264 video compression standard for video capture and compression program designed embedded terminal; analysis and comparison of network protocols, according to the characteristics of real-time video transmission, write a program based on UDP network transmission; research and use Socket programming and DirectShow video development technologies, development of application software for the PC end of the video data in real-time to receive and decode display, real-time display of the video data, and video files can be saved to the local hard disk.
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