Study And Design On Embedded Wireless Video Monitoring Terminal

With the rapid development of computer, micro-electronics, mutilmedia and network communications technology, embedded video monitoring technology has also made rapidly development. At present, digital video monitoring, replaceing traditional analog video monitoring system, becomes more popular. With the increasing development of wireless communications, wireless video monitoring has incomparable superiority. It overcomes many existing difficulties resulting from lineate network, such as, hard to distribute network wires, difficult to spread and long life cycle installation, etc. Therfore, it becomes favor to more users.This paper is to design a wireless video monitoring system terminal based on 802.11g wireless LAN technology, S3C2410 processor and embedded Windows CE real-time operation system by adopting 802. 11g wireless LAN bandbase controller WT6104CLVG of Memory Interface,transmission rate can reach 54Mbps which provides a high-spreed transmission channel for the video information transmission. The wireless video monitoring terminal can easily access wireless LAN and wired LAN by wireless AP(Access Point).Whereas the tremendous amount of high-precision real-time video information, it needs to compress coding prior to transmission. The system designed in this paper, using MPEG4 encoding chip IME6400 to compress and encode the acquisition of the digital video and MPEG4 video stream is generated and then transferred to wireless LAN by wireless module.In this paper, hardware design and software exploitation are included. Hardware design includes circuit design of mainly-controlled module, video capture, encoding module, and wireless transmission module. Software exploitation consists of transplant of BSP, the kernel image creation, the development of module driver and application software which are based on the Windows CE operating system.