【作者】 陈为军；

【导师】 李正明；

【作者基本信息】 江苏大学 ， 控制理论与控制工程， 2007， 硕士

【摘要】 视频监控系统是安全防范系统的重要组成部分，以其直观、方便、信息内容丰富而广泛应用于许多场合。近年来，随着计算机、网络以及图像处理、传输技术的飞速发展，视频监控技术也有长足的发展，由传统的模拟视频监控发展到现在的数字视频监控，其中又以基于网络的嵌入式数字视频监控技术发展最快、最具推广应用前景。本文在分析了视频监控技术的现状和特点的基础上采用了以嵌入式WEB服务器和CCD摄像头为主体，以Web访问为交互方式的视频监控系统设计方案。设计的过程中，使用专用芯片SAA7111A和IME6400进行视频信号的采样和MPEG-4编码，提高了采集编码的效率并减小了对控制芯片的CPU的占用率；编码后的数字视频信号通过内部的总线送到嵌入式WEB服务器中，由WEB服务器负责向网络上的用户发送；该WEB服务器基于ARM7系列微处理器S3C44BOX及嵌入式Linux操作系统uClinux平台上构建，使得该服务器具有较高的性能指标；对uClinux的内核进行了更新，使用了最新的Linux-2.6内核，改善了系统的实时性。整个系统需要一个IP地址就可以连接到Internet上，网络上的用户可以直接使用浏览器进行远程实时监控，受权用户还可以对系统进行操作和配置。在校园局域网内进行测试，实验结果表明，多个用户向服务器请求现场视频流时，能够同时稳定的播放清晰流畅的画面，无明显抖动和延时；远程操控服务器端时(如云台)，动作延时很小，并能很好的完成动作。更多还原

【Abstract】 The video monitor system is an important part of security defense system, which is widely used in a lot of occasion, for its intuition and convenience. Recently, Video monitor system has been well developed along with a very fast speed development of the technology of computer, network and image processing, from traditional analog technology for modern digital technology. Embedded digital Video monitor system is the fastest development part of the domain of digital security defense system.Based on the analyses of the current situation of video supervise and characteristic,this paper bring forword a solution which is made up of embedded WEB server and vidicon and we can visit and control the system with Web. We use SAA7111A and IME6400 to process analog video into digital MPEG-4 video, and then send the encoded signals to embedded WEB server, so the server can send them to users on internet. We use S3C44B0X, which is ARM7 series microprocessor produced by Samsung co.,Ltd, and embedded OS uClinux to construct our video server. We also use the latest Linux kernel Linux-2.6 to update uClinux. The system only need one IP address, and users can see the images by their browser, authorized users also can operate and configure the system.Experiment is tested in school local netwok. The result indicates: users can broadcast clear and smooth picture at the same time, without obvious shaking and delay when they ask for WEB server;It can work well without delay when web server is controlled remotly.更多还原