視頻監(jiān)控系統(tǒng)外文翻譯譯

1、<p><b>　　中文3630字</b></p><p><b>　　畢業(yè)設(shè)計外文翻譯</b></p><p>　　2014 屆 信息科學與工程 學院 通信工程 專業(yè)</p><p>　　題 目： </p><p><b>　　子 題：</b>&l

2、t;/p><p><b>　　外文文獻</b></p><p>　　Video surveillance system is safe guard system is an important part of a preventive ability strong comprehensive system. Video monitoring with its conven

3、ient, intuitive and information content rich and widely used in many occasions. In recent years, with the development of modern science and technology, in particular network bandwidth, computer processing power and stora

4、ge capacity rapidly increase and various practical video information processing technology, video surveillance technology also </p><p>　　1, video monitoring system simulations simulate video monitoring syste

5、m is divided into microprocessor-based video switch control plus PC multimedia management and pc-based realize the switch control of matrix host and system multimedia management two types. Analog closed-circuit televisio

6、n monitoring system is actually the combination of many simulation monitoring equipment, system mainly consists of "front-end device" and "terminal control device" and "signal transmission medium

7、" three parts, </p><p>　　2 video monitoring system, digital multimedia technology, video with compression technology, network communication technology of digital video surveillance system development, t

8、he rapid rise, on the market today there are two types of digital video monitor system type, one is the digital video equipment video monitoring system for the core, another kind is embedded video Web server video monito

9、ring system for the core. </p><p>　　Digital video compression technology matures, the computer based on PC universalization, create conditions multimedia monitor. This new video monitoring system of rapid ri

10、se, partially replaced with video matrix image segmentation device, video as the core, complementary with other transmitter simulation video monitor mode, its advantage mainly displays in: a, PC multimedia monitor video

11、matrix, the host integrated image segmentation device, many functions of video recorders, simplifies the stru</p><p>　　But as the PC video surveillance video system development, in actual engineering in use

12、process, also exposed some shortage, mainly system work instability. The video surveillance video based on PC for: the structure of system compatible/industrial PC + video capture card + ordinary/more reliable operation

13、platform + application software. From the system composition structure to analysis: a, PC for 24 hour uninterrupted job, its performance is not very stable, g-kong PC relative compatible PC's </p><p>　　E

14、mbedded system mainly consists of embedded processor, relevant support hardware, embedded operating system and application software system etc, it is the collection software and hardware in the integration of can work in

15、dependently "devices". Embedded operating system is a kind of real-time, supports embedded system application operating system software, it is embedded system extremely important constituent, usually includes a

16、nd hardware related software drivers, system kernel bottom, device dr</p><p>　　Embedded video Web server mode, a built-in video server embedded Web server, the embedded real-time multitasking operating syste

17、m. The video signal digital camera sent by high compression chip after through internal bus to compress, built-in Web server, Internet users can use directly on the Web server browsers on camera images, subscribers can a

18、lso control the camera lens, haeundae, the actions or operate on system configuration. </p><p>　　Because the video compression and Web function centralism to a small size within the equipment can be directly

19、 connected lans, achieve namely that look, omited inserted range of complex cable, convenient installation (only set an IP address), the user does not need to install any hardware device, with the browser can only watch.

20、 Embedded video Web server monitoring system and other surveillance system has the following characteristics: a comparison of embedded video area is vast, have been super</p><p>　　The development of video mo

21、nitoring system </p><p>　　1, video monitoring system development direction </p><p>　　Video digitizing, front integration, network, system integration is monitoring the development of video monit

22、oring system, and recognized the direction is the premise of digital network, network and system integration of video monitor based, so, the biggest two characteristics is the digital and network. </p><p>　　

23、2, digital </p><p>　　Digital is the 21st century features, is the information technology as the core, the necessity of the development of electronic technology, digital is toward growth pass, along with the

24、time development, our environment will become more and more digital. </p><p>　　Video surveillance system is the system of digital first should flow in video, audio, (including from analog state control, etc.

25、) state, which to digital completely break "classic cable TV system based on camera imaging technology as the center" structure, fundamentally changing video monitoring system from information acquisition, data

26、 processing, transmission and system control of the mode and structural form. The flow of information digitization, coding compression, open video monitoring syst</p><p>　　3 and network </p><p>

27、　　Video monitoring system of the structure of the network will mean system by lumped type to distribution type system transition. Distribution type system USES the multi-layer hierarchical structure form and the real-tim

28、e kernel technology with micro multitask, multi-user, distributed operating system to achieve beat task scheduling algorithm fast response. Distributing type monitoring system of the hardware and software using the stand

29、ardization, the modularization and the serialization of design</p><p><b>　　外文翻譯</b></p><p>　　視頻監(jiān)控系統(tǒng)是安全防范系統(tǒng)的重要組成部分，是一種防范能力較強的綜合系統(tǒng)。視頻監(jiān)控以其直觀、方便、信息內(nèi)容豐富而廣泛應(yīng)用于許多場合。近年來，隨著現(xiàn)代科學技術(shù)的不斷發(fā)展特別是網(wǎng)絡(luò)帶寬

30、、計算機處理能力和存儲容量的迅速提高以及各種實用視頻信息處理技術(shù)的出現(xiàn)，視頻監(jiān)控技術(shù)也有長足的發(fā)展，視頻監(jiān)控進入了全數(shù)字化的網(wǎng)絡(luò)時代，日益受到人們的重視和關(guān)注。視頻監(jiān)控系統(tǒng)的發(fā)展基本上是從早期的模擬閉路電視監(jiān)控系統(tǒng)向數(shù)模結(jié)合的視頻監(jiān)控系統(tǒng)和現(xiàn)在的數(shù)字視頻監(jiān)控系統(tǒng)演變的過程，而現(xiàn)在的數(shù)字視頻監(jiān)控系統(tǒng)根據(jù)技術(shù)的發(fā)展又分為三個階段：數(shù)字監(jiān)控的多媒體階段、數(shù)字監(jiān)控的DVR階段和數(shù)字監(jiān)控的網(wǎng)絡(luò)階段。 </p><p>　　

31、1、模擬視頻監(jiān)控系統(tǒng) 模擬視頻監(jiān)控系統(tǒng)分為基于微處理器的視頻切換控制加PC機的多媒體管理和基于PC機實現(xiàn)對矩陣主機的切換控制及對系統(tǒng)的多媒體管理兩種類型。模擬閉路電視監(jiān)控系統(tǒng)實際上就是許多模擬監(jiān)控設(shè)備的組合，系統(tǒng)主要由“前端設(shè)備”和“終端控制設(shè)備”以及“信號傳輸介質(zhì)”三個部分組成，其中：前端設(shè)備主要有攝像機、云臺、解碼器等，控制設(shè)備主要有切換矩陣、畫面分割器、監(jiān)視器、控制鍵盤、錄像機等。傳輸介質(zhì)包括電纜、控制線等。隨著微處理器、微機的功

32、能、性能的增強和提高，多媒體技術(shù)的應(yīng)用，系統(tǒng)在功能、性能、可靠性、結(jié)構(gòu)方式等方面都發(fā)生了很大的變化，視頻監(jiān)控系統(tǒng)的構(gòu)成更加方便靈活、與其它技術(shù)系統(tǒng)的接口趨于規(guī)范，人機交互界面更為友好。但由于視頻監(jiān)控系統(tǒng)中信息流的形態(tài)沒有變，仍為模擬的視頻信號，系統(tǒng)的網(wǎng)絡(luò)結(jié)構(gòu)主要是一種單功能、單向、集總方式的信息采集網(wǎng)絡(luò)，因此系統(tǒng)盡管已發(fā)展到很高的水平，已無太多潛力可挖，其局限性依然存在，要滿足更高的要求，數(shù)字化是必由之路。模擬監(jiān)控系統(tǒng)的主要缺點有：通常

33、只適合于小范圍的區(qū)域監(jiān)控，模擬視頻信號的傳輸工具主要是同軸電纜，而同軸電纜傳輸模擬視頻信號的距離不大于1Km，雙絞線的距</p><p>　　2、數(shù)字視頻監(jiān)控系統(tǒng) 隨著多媒體技術(shù)、視頻壓縮編碼技術(shù)、網(wǎng)絡(luò)通訊技術(shù)的發(fā)展、數(shù)字視頻監(jiān)控系統(tǒng)迅速崛起，現(xiàn)今市場上有兩種數(shù)字視頻監(jiān)控系統(tǒng)類型，一種是以數(shù)字錄像設(shè)備為核心的視頻監(jiān)控系統(tǒng)，另一種是以嵌入式視頻Web服務(wù)器為核心的視頻監(jiān)控系統(tǒng)。</p><p&g

34、t;　　數(shù)字視頻壓縮編碼技術(shù)日益成熟，計算機的普及化，為基于PC機的多媒體監(jiān)控創(chuàng)造了條件。這種新型視頻監(jiān)控系統(tǒng)的迅速崛起，部分地取代了以視頻矩陣圖像分割器、錄像機為核心，輔以其它傳送器的模擬視頻監(jiān)控模式，其優(yōu)越性主要表現(xiàn)在：PC機的多媒體監(jiān)控主機綜合了視頻矩陣、圖像分割器、錄像機等的眾多功能，使系統(tǒng)結(jié)構(gòu)大為簡化。由于采用計算機網(wǎng)絡(luò)技術(shù)，數(shù)字多媒體遠程網(wǎng)絡(luò)監(jiān)控不受距離限制。由于采用大容量磁盤陣列存盤器或光盤存儲器，可以節(jié)省大量的磁帶介質(zhì)，

35、同時有利于系統(tǒng)實現(xiàn)多媒體信息查詢。</p><p>　　但隨著基于PC機的視頻監(jiān)控錄像系統(tǒng)的發(fā)展，在實際工程使用過程中，也暴露出一些不足，主要是系統(tǒng)工作的不穩(wěn)定性。基于PC的視頻監(jiān)控錄像系統(tǒng)的組成結(jié)構(gòu)為：兼容/工控PC機+視頻采集卡+普通/較可靠的操作平臺+應(yīng)用軟件。從系統(tǒng)的組成結(jié)構(gòu)來分析：PC機用于24小時不間斷工作時，其性能是不很穩(wěn)定的，工控PC機相對兼容PC機的穩(wěn)定性有一個檔次上的提高，適用于較復雜的工作環(huán)

36、境。操作系統(tǒng)：以Windows 98為操作平臺的系統(tǒng)，業(yè)內(nèi)人士都知道，Win98的穩(wěn)定性是有一定問題的，如果同時應(yīng)用軟件又不是很規(guī)范，這樣就容易在使用過程中出現(xiàn)工作不穩(wěn)定、死機等問題，而基于PC機的視頻監(jiān)控錄像系統(tǒng)其軟件的實現(xiàn)是在Windows 95/98/NT、Unix、Linux等通用操作系統(tǒng)上，同時系統(tǒng)文件、應(yīng)用軟件和圖像文件都存儲在硬盤上，視頻處理必須高密度輸入大量數(shù)據(jù)，同時硬盤要進行多工工作，普通的硬盤邏輯（如Windows的

37、FAT32）已無法適應(yīng)，以致極易產(chǎn)生系統(tǒng)的不穩(wěn)定性，造成死機現(xiàn)象。應(yīng)用軟件：采用簡易應(yīng)用軟件的系統(tǒng)是不能夠用于安防領(lǐng)域的，視頻監(jiān)控系統(tǒng)的應(yīng)用軟件能力上應(yīng)支持多任務(wù)并發(fā)處理，如監(jiān)視、錄像、回放、備份、報</p><p>　　嵌入式系統(tǒng)主要由嵌入式處理器、相關(guān)支撐硬件、嵌入式操作系統(tǒng)及應(yīng)用軟件系統(tǒng)等組成，它是集軟硬件于一體的可獨立工作的"器件"。嵌入式操作系統(tǒng)是一種實時的，支持嵌入式系統(tǒng)應(yīng)用的操作

38、系統(tǒng)軟件，它是嵌入式系統(tǒng)極為重要的組成部分，通常包括與硬件相關(guān)的底層驅(qū)動軟件、系統(tǒng)內(nèi)核、設(shè)備驅(qū)動接口、通信協(xié)議、圖形界面、標準化瀏覽器等，嵌入式操作系統(tǒng)在系統(tǒng)實時高效性、硬件的相關(guān)依靠性、軟件固態(tài)化及應(yīng)用的專用性等方面具有較為突出的特點。嵌入式系統(tǒng)的優(yōu)缺點：系統(tǒng)為專用系統(tǒng)，所以系統(tǒng)小，指令精簡，處理速度快。系統(tǒng)數(shù)據(jù)置于ROM/FLASH MEMORY，調(diào)用速度快，不會被改變，穩(wěn)定性好。系統(tǒng)處理實時性好，性能穩(wěn)定。文件管理系統(tǒng)更適合于大量

39、的視頻數(shù)據(jù)。在網(wǎng)絡(luò)功能、音視頻同步等方面也難令人滿意。</p><p>　　嵌入式視頻Web服務(wù)器方式，視頻服務(wù)器內(nèi)置一個嵌入式Web服務(wù)器，采用嵌入式實時多任務(wù)操作系統(tǒng)。攝像機送來的視頻信號數(shù)字化后由高效壓縮芯片壓縮，通過內(nèi)部總線送到內(nèi)置的Web服務(wù)器，網(wǎng)絡(luò)上用戶可以直接用瀏覽器觀看Web服務(wù)器上的攝像機圖像，授權(quán)用戶還可以控制攝像機、云臺、鏡頭的動作或?qū)ο到y(tǒng)配置進行操作。</p><p&g

40、t;　　由于把視頻壓縮和Web功能集中到一個體積很小的設(shè)備內(nèi)，可以直接連入局域網(wǎng)，達到即插即看，省掉多種復雜的電纜，安裝方便（僅需設(shè)置一個IP地址），用戶也無需安裝任何硬件設(shè)備，僅用瀏覽器即可觀看。嵌入式視頻Web服務(wù)器監(jiān)控系統(tǒng)與其它監(jiān)控系統(tǒng)的比較有如下特點：布控區(qū)域廣闊 嵌入式視頻Web服務(wù)器監(jiān)控系統(tǒng)的Web服務(wù)器直接連入網(wǎng)絡(luò)，沒有線纜長度和信號衰減的限制，同時網(wǎng)絡(luò)是沒有距離概念的，徹底拋棄了地域的概念，擴展布控區(qū)域。系統(tǒng)具有幾乎無限

41、的無縫擴展能力 所有設(shè)備都以IP地址進行標識，增加設(shè)備只是意味著IP地址的擴充?？山M成非常復雜的監(jiān)控網(wǎng)絡(luò) 采用基于嵌入式Web服務(wù)器為核心的監(jiān)控系統(tǒng)，在組網(wǎng)方式上與傳統(tǒng)的模擬監(jiān)控和基于PC平臺的監(jiān)控方式有極大的不同，由于Web服務(wù)器輸出已完成模擬到數(shù)字的轉(zhuǎn)換并壓縮，采用統(tǒng)一的協(xié)議在網(wǎng)絡(luò)上傳輸，支持跨網(wǎng)關(guān)、跨路由器的遠程視頻傳輸。性能穩(wěn)定可靠，無需專人管理 嵌入式Web服務(wù)器實際上基于嵌入式電腦技術(shù)，采用嵌入式實時多任務(wù)操作系統(tǒng)，又由于視

42、頻壓縮和Web功能集中到一個體積很小的設(shè)備內(nèi)，直接連入局域網(wǎng)或廣域網(wǎng)，即插即看，系統(tǒng)的實時性、穩(wěn)定性、可靠性大大提高，也無需專人</p><p>　　視頻監(jiān)控系統(tǒng)的發(fā)展 </p><p>　　1、視頻監(jiān)控系統(tǒng)的發(fā)展方向 </p><p>　　前端一體化、視頻數(shù)字化、監(jiān)控網(wǎng)絡(luò)化、系統(tǒng)集成化是視頻監(jiān)控系統(tǒng)公認的發(fā)展方向，而數(shù)字化是網(wǎng)絡(luò)化的前提，網(wǎng)絡(luò)化又是系統(tǒng)集成化的基礎(chǔ)

43、，所以，視頻監(jiān)控發(fā)展的最大兩個特點就是數(shù)字化和網(wǎng)絡(luò)化。 </p><p><b>　　2、數(shù)字化</b></p><p>　　數(shù)字化是21世紀的特征，是以信息技術(shù)為核心的電子技術(shù)發(fā)展的必然，數(shù)字化是邁向成長的通行證，隨著時代的發(fā)展，我們的生存環(huán)境將變得越來越數(shù)字化。 </p><p>　　視頻監(jiān)控系統(tǒng)的數(shù)字化首先應(yīng)該是系統(tǒng)中信息流（包括視頻、音

44、頻、控制等）從模擬狀態(tài)轉(zhuǎn)為數(shù)字狀態(tài)，這將徹底打破"經(jīng)典閉路電視系統(tǒng)是以攝像機成像技術(shù)為中心"的結(jié)構(gòu)，根本上改變視頻監(jiān)控系統(tǒng)從信息采集、數(shù)據(jù)處理、傳輸、系統(tǒng)控制等的方式和結(jié)構(gòu)形式。信息流的數(shù)字化、編碼壓縮、開放式的協(xié)議，使視頻監(jiān)控系統(tǒng)與安防系統(tǒng)中其它各子系統(tǒng)間實現(xiàn)無縫連接，并在統(tǒng)一的操作平臺上實現(xiàn)管理和控制，這也是系統(tǒng)集成化的含義。</p><p><b>　　3、網(wǎng)絡(luò)化 </b

45、></p><p>　　視頻監(jiān)控系統(tǒng)的網(wǎng)絡(luò)化將意味著系統(tǒng)的結(jié)構(gòu)將由集總式向集散式系統(tǒng)過渡。集散式系統(tǒng)采用多層分級的結(jié)構(gòu)形式，具有微內(nèi)核技術(shù)的實時多任務(wù)、多用戶、分布式操作系統(tǒng)以實現(xiàn)搶先任務(wù)調(diào)度算法的快速響應(yīng)。組成集散式監(jiān)控系統(tǒng)的硬件和軟件采用標準化、模塊化和系列化的設(shè)計，系統(tǒng)設(shè)備的配置具有通用性強、開放性好、系統(tǒng)組態(tài)靈活、控制功能完善、數(shù)據(jù)處理方便、人機界面友好以及系統(tǒng)安裝、調(diào)試和維修簡單化，系統(tǒng)運行互為熱