本文選題：嵌入式　切入點：視頻監(jiān)控　出處：《西安工業(yè)大學》2013年碩士論文　論文類型：學位論文

【摘要】：進入信息時代以來,隨著獲取信息方式不斷的進步,人們對信息的完整性、準確性和可靠性提出了更高的要求。而視頻監(jiān)控正是以其內容豐富、直觀性強并且能夠完整的再現(xiàn)客觀信息等特點受到人們極大的關注。 論文首先對視頻監(jiān)控系統(tǒng)發(fā)展歷程進行了詳細的介紹,然后在對整個系統(tǒng)的功能需求進行分析的基礎之上,提出了幾套可用于實現(xiàn)遠程監(jiān)控的方案,再對這幾套方案的優(yōu)缺點進行總結和對比。由于網(wǎng)絡帶寬是有限的,在現(xiàn)有的研究當中還存在因為數(shù)據(jù)量太大而占用很多帶寬,造成了網(wǎng)絡延遲、堵塞,從而產(chǎn)生圖像失真、花屏、停頓等問題。本文在現(xiàn)有的實驗環(huán)境下,確定了一套最佳方案即以ARM9為核心處理器的實驗平臺上搭建嵌入式web服務器,配以功能完善、資源豐富的嵌入式Linux操作系統(tǒng)作為軟件平臺,使用傳輸速度快、成本低、通用性好的USB攝像頭完成對遠端視頻圖像信息的采集、壓縮和網(wǎng)絡傳輸。并且在此過程中采用內存映射法和減小圖像分辨率、改變像素色深、圖像傳輸幀率和圖像壓縮率等方式減小數(shù)據(jù)傳輸時占用的帶寬,解決了以上問題。論文研究重點是通過采用交叉開發(fā)的模式,在宿主機上運用虛擬機VMware安裝內核為2.6.35的Fedora14操作系統(tǒng),使用串口和超級終端完成宿主機和目標機之間的通信。軟件開發(fā)采用自下而上的順序,針對硬件平臺的架構,完成自舉程序Bootloader的開發(fā)和移植,對Linux系統(tǒng)內核進行裁剪、移植,制作YAFFS2根文件系統(tǒng),然后將其掛載。應用程序的編寫在Vi編輯器中完成,最后利用HTML和JavaScript語言,編寫了視頻監(jiān)控系統(tǒng)的登錄界面,提高了系統(tǒng)整體的安全性。 整個系統(tǒng)采用了計算機網(wǎng)絡技術、操作系統(tǒng)技術和串口通信技術,充分發(fā)揮嵌入式開發(fā)的潛能,實驗結果表明用戶只要使用瀏覽器就可以監(jiān)控到遠端的實時情況,能夠達到預期的效果。
[Abstract]:Since entering the information age, with the continuous progress of the way of obtaining information, people have put forward higher requirements for the integrity, accuracy and reliability of information, and video surveillance is rich in content. People pay great attention to the characteristics of visuality and the ability to reproduce objective information completely. Firstly, this paper introduces the development of video surveillance system in detail, and then, based on the analysis of the function requirement of the whole system, puts forward several schemes that can be used to realize remote monitoring. The advantages and disadvantages of these schemes are summarized and compared. Because the bandwidth of the network is limited, there is still a lot of bandwidth in the existing research because the amount of data is too large, which results in network delay, blockage and image distortion. In the existing experimental environment, this paper determines a set of best solution, that is, the embedded web server is built on the experimental platform with ARM9 as the core processor, and the function is perfect. As a software platform, the resource-rich embedded Linux operating system uses a USB camera with high transmission speed, low cost and good versatility to complete the collection of remote video image information. Compression and network transmission. In the process, the memory mapping method is used to reduce the image resolution, the pixel color depth is changed, the image transmission frame rate and the image compression rate are used to reduce the bandwidth of the data transmission. The key point of this paper is to install the Fedora14 operating system with 2.6.35 kernel on the host computer by using the mode of cross-development and using virtual machine (VMware). The serial port and super terminal are used to complete the communication between the host computer and the target computer. The software development adopts the bottom-up sequence, aiming at the architecture of the hardware platform, the development and transplantation of the bootstrap program Bootloader is completed, and the kernel of the Linux system is cut and transplanted. The YAFFS2 root file system is made, and the application program is written in the Vi editor. Finally, the login interface of the video surveillance system is written by using HTML and JavaScript language, which improves the security of the system as a whole. The whole system uses computer network technology, operating system technology and serial port communication technology to give full play to the potential of embedded development. The experimental results show that users can monitor the real-time situation of the remote end as long as they use the browser. Can achieve the desired results.
【學位授予單位】：西安工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TP277;TP368.1

【參考文獻】

相關期刊論文 前5條

1 王卓 ,包杰;嵌入式Linux系統(tǒng)及其應用前景[J];單片機與嵌入式系統(tǒng)應用;2004年05期

2 柯麗,黃廉卿;DSP芯片在實時圖像處理系統(tǒng)中的應用[J];光機電信息;2005年01期

3 楊穎;陳之龍;黃杰;黃宛寧;;基于USB攝像頭的嵌入式遠程視頻監(jiān)控系統(tǒng)[J];微計算機信息;2007年05期

4 許東;網(wǎng)絡化的全數(shù)字圖像監(jiān)控系統(tǒng)[J];有線電視技術;2002年02期

5 毛勇強;黃光明;;YAFFS文件系統(tǒng)在嵌入式Linux上的實現(xiàn)[J];電子設計應用;2006年01期

相關碩士學位論文 前2條

1 湯霄峰;基于Internet的嵌入式遠程監(jiān)控系統(tǒng)的研究與實現(xiàn)[D];湖南大學;2009年

2 高仁才;基于ARM的網(wǎng)絡視頻監(jiān)控機設計及實現(xiàn)[D];吉林大學;2010年

，

本文編號：1558369