| The power of wireless video monitor system comes from the safety of special places and the social stability development demand, It gradually becomes the focus of attention and cutting-edge research.Wireless video monitor business, once launched,become the highlight of the industry innovation and development. More and more companies are investing to a new generation of wireless video monitor system research and development work.It can be said that video monitor system is an irreversible trend toward the network-based, digital, intelligent direction.With the combination of Embedded systems and Web technologies,on the basis of USB camera for image acquisition,using USB wireless net card for data transfer, composed of the wireless LAN environment by AP.In the network's coverage area,we enter the correct IP address in the Browse, Immediately watching the monitor to the image.Firstly discuss the embedded wireless video monitor system design plan, to introduce the related hardware and software environment and wireless LAN network protocol standards and two network models, go on discussing the establishment of the embedded cross-compiler environment and porting of embedded linux system, including the boot and start of U_BOOT,2.6.13 version of the kernel cut transplants, making the root file system of Yaffs.Then analyze the USB device driver hierarchy, consists of three parts of Host Controller Driver,USB Driver,and USB device driver.In the Generic device driver framework,load USB camera and USB wireless network card driver successfully.Finally elaborate implementation of embedded web video servers,include the two parts of video servers and Web server.the Embedded Video Server use Linux API to collect image, Embedded Web server is the boa server, with the Java Applet programming,to Complet the video data transmission. |
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