【正文】 從系統(tǒng)的組成結(jié)構(gòu)來(lái)分析：a、PC機(jī)用于24小時(shí)不間斷工作時(shí)，其性能是不很穩(wěn)定的，工控PC機(jī)相對(duì)兼容PC機(jī)的穩(wěn)定性有一個(gè)檔次上的提高，適用于較復(fù)雜的工作環(huán)境。 但隨著基于PC機(jī)的視頻監(jiān)控錄像系統(tǒng)的發(fā)展，在實(shí)際工程使用過(guò)程中，也暴露出一些不足，主要是系統(tǒng)工作的不穩(wěn)定性。b、由于采用計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)，數(shù)字多媒體遠(yuǎn)程網(wǎng)絡(luò)監(jiān)控不受距離限制。 數(shù)字視頻壓縮編碼技術(shù)日益成熟，計(jì)算機(jī)的普及化，為基于PC機(jī)的多媒體監(jiān)控創(chuàng)造了條件。c、無(wú)法形成有效的報(bào)警聯(lián)動(dòng)，由于各部分獨(dú)立運(yùn)作，相互之間的控制協(xié)議很難互通，聯(lián)動(dòng)只能在有限的范圍內(nèi)進(jìn)行。模擬監(jiān)控系統(tǒng)的主要缺點(diǎn)有：a、通常只適合于小范圍的區(qū)域監(jiān)控，模擬視頻信號(hào)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(hào)的距離不大于1Km，雙絞線的距離更短，這就決定了模擬監(jiān)控只適合于單個(gè)大樓、小的居民區(qū)以及其它小范圍的場(chǎng)所。隨著微處理器、微機(jī)的功能、性能的增強(qiáng)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(jī)交互界面更為友好。模擬閉路電視監(jiān)控系統(tǒng)實(shí)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(hào)傳輸介質(zhì)”三個(gè)部分組成，其中：前端設(shè)備主要有攝像機(jī)、云臺(tái)、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(jī)等。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(guò)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(gè)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。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(chǎng)合。ll be easier in use process appears work instability, freezes and other issues, and PC video surveillance video system realization of their software in Windows 95/98 / NT, Unix, Linux operating system, such as general while system files, application software and image files are stored in the disk, video processing must highdensity input of large quantities of data, and to work hard drive, the average for the hard disk logic (such as Windows, already can39。附錄參考文獻(xiàn)[1]李金伴，[M].北京：化學(xué)工業(yè)出版社，2008[2][M].北京：電子工業(yè)出版社，2004[3]楊磊，[M].北京：機(jī)械工業(yè)出版社，2005[4]真功夫科技黑貓牌相關(guān)設(shè)備資料[5]黎連業(yè)，[M].北京：電子工業(yè)出版社，2005[6]《民用閉路監(jiān)視電視系統(tǒng)工程技術(shù)規(guī)范》GB5019894[7][M].高等教育出版社，2010[8][M].機(jī)械工業(yè)出版社，2007[9][M].北京：科學(xué)出版社，2002[10] of monitoring and contral system[M].American: Professional Publishing GrouP,2007外文文獻(xiàn)Video surveillance system is safe guard system is an important part of a preventive ability strong prehensive system. Video monitoring with its convenient, 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, puter processing power and storage capacity rapidly increase and various practical video information processing technology, video surveillance technology also appeared a considerable development, video monitoring entered the digital network age, increasingly attention by people and attention. The development of video surveillance system is mainly early analog closedcircuit television monitoring system bined to video monitoring system model of digital video monitor and now the evolution process, and the system of digital video monitor system now according to the technical development and divided into three stages: digital monitor multimedia stage, digital monitor DVR stage and digital monitor network stage. 1, video monitoring system simulations simulate video monitoring system is divided into microprocessorbased video switch control plus PC multimedia management and pcbased realize the switch control of matrix host and system multimedia management two types. Analog closedcircuit television monitoring system is actually the bination of many simulation monitoring equipment, system mainly consists of frontend device and terminal control device and signal transmission medium three parts, including: frontend equipment is mainly a camera, haeundae, decoder, control equipment is mainly a switching matrix, image segmentation device, monitor and control the keyboard, video, etc. Transmission medium including cable, control, etc. As microprocessors, the function, performance of microputers and heighten, multimedia technology application, the system in functionality, performance, reliability, structure pattern, etc, great changes have happened to the video monitoring system, more convenient, the position of the interface with other technical system tends to regulate, manmachine interface more friendly. But because video monitor and control system in the flow of information form does not change, the video signal is still simulation system, the network structure is mainly a ChanGongNeng, oneway, lumped way of information collection network, so system although has developed to a high level, has not much potential can dig, its limitations still exist, to meet the higher request, digital is the only way. Simulation monitoring system of main faults are: a, usually only suitable for small range of regional monitor video signal transmission, simulation tools, and is mainly coaxial cable to transmit analog video signal coaxial cable, the distance is not more than the distance twistedpair dump more short, this determines the analog monitor only suitable for single building, small neighborhood and other small range of places. B, the system of expansion ability difference for has already built good system, if want to add new monitory point, often is one change makes all change, new equipment is also hard to add to the original system in. C, unable to form effective alarm linkage, because each part between independent operation, the control protocol is difficult to each other, linkage in the limited scope only. 2 video monitoring system, digital multimedia technology, video with pression technology, network munication technology of digital video surveillance system development, the 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 monitoring system for the core. Digital video pression technology matures, the puter based on PC universalization, create conditions multimedia monitor. This new video monitoring system of rapid rise, partially replaced with video matrix image segmentation device, video as the core, plementary with other transmitter simulation video monitor mode, its advantage mainly displays in: a, PC multimedia monitor video matrix, the host integrated image segmentation device, many functions of video recorders, simplifies the structure of the system. B, because use the puter network techno