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clearfix"><h1>三門(mén)視頻監(jiān)控系統(tǒng)CCTV 上海翊皖船舶設(shè)備供應(yīng)</h1><div id="ftl8gsa" class="proBig"><div id="irolmok" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yiwanchuanbo/637423537995963813/5135934.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7fhzurt" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yiwanchuanbo/637423537995963813/5135934.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="c3228hj" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>三門(mén)視頻監(jiān)控系統(tǒng)CCTV,cctv監(jiān)控系統(tǒng)</p><p><span>***更新：</span>2021-01-10 13:30:44</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hdpmct3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海翊皖船舶設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>徐慶華</p><p><span>郵箱: </span>hc_automation@163.com</p><p><span>電話(huà): </span>13917998260</p><p><span>傳真: </span>021_58461662</p><p><span>網(wǎng)址: </span>http://www.sh-yiwan.cn</p><p><span>手機(jī): </span>021-58361662</p><p><span>地址: </span>中國(guó)(上海)自由貿(mào)易試驗(yàn)區(qū)張楊路828-838號(hào)26樓</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="aebny3d" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="scjlrya" class="box"><p><p style="text-indent:25px">CCTV監(jiān)控系統(tǒng)組成：硬盤(pán)錄像機(jī)。監(jiān)控系統(tǒng)中較常用的記錄設(shè)備是民用錄像機(jī)和長(zhǎng)延時(shí)錄像機(jī)，因其操作簡(jiǎn)單易學(xué)，錄像帶也容易保存和購(gòu)買(mǎi)。與家用錄像機(jī)不同，延時(shí)錄像機(jī)可以長(zhǎng)時(shí)間工作，可以錄制24小時(shí)（用普通VHS 錄像帶）甚至上百小時(shí)的圖像，可以聯(lián)接報(bào)警器材，收到報(bào)警信號(hào)自動(dòng)啟動(dòng)錄像，三門(mén)視頻監(jiān)控系統(tǒng)CCTV，三門(mén)視頻監(jiān)控系統(tǒng)CCTV，可以疊加時(shí)間日期，三門(mén)視頻監(jiān)控系統(tǒng)CCTV，可以編制錄像機(jī)自動(dòng)錄像程序，選擇錄像速度，錄像帶到頭后是自動(dòng)停止還是倒帶重錄…… 延時(shí)錄像機(jī)的性能雖然出眾，但價(jià)格不菲，而且目前分辨率不是很高，在延時(shí)錄像時(shí)圖像也會(huì)丟失一部分，回放的圖像是一頓一頓跳躍的。我們常用的交換機(jī)有百兆交換機(jī)、千兆交換機(jī)。三門(mén)視頻監(jiān)控系統(tǒng)CCTV</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="三門(mén)視頻監(jiān)控系統(tǒng)CCTV,cctv監(jiān)控系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/yiwanchuanbo/637423537995963813/5135934.png"></div><p style="text-indent:25px">如何購(gòu)買(mǎi)CCTV閉路電視監(jiān)控?cái)z像系統(tǒng)：相機(jī)中成像芯片的類(lèi)型和質(zhì)量： CCTV安全相機(jī)使用CMOS或CCD（電荷耦合器件）芯片產(chǎn)生圖像。微小和/或非常低價(jià)的閉路電視攝像機(jī)通常使用CMOS技術(shù)，產(chǎn)生質(zhì)量差的視頻并且光敏度非常差。良好的質(zhì)量和更好的閉路電視攝像機(jī)使用CCD技術(shù)。CCD芯片的尺寸通常為1/4“，1/3”或1/2“。根據(jù)經(jīng)驗(yàn)，尺寸越大，產(chǎn)生的圖像質(zhì)量越高，價(jià)格也越高。但是，更高密度的1/4“和1/3”CCD芯片現(xiàn)在可以產(chǎn)生與許多舊1/3“或1/2”芯片一樣好的圖像。三門(mén)視頻監(jiān)控系統(tǒng)CCTV在局域網(wǎng)內(nèi)的視頻監(jiān)控進(jìn)行交換機(jī)選擇時(shí)，接入層和匯聚層交換機(jī)的選擇通常只需要考慮交換容量的因素就夠了。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="三門(mén)視頻監(jiān)控系統(tǒng)CCTV,cctv監(jiān)控系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/yiwanchuanbo/637423537930876012/2650616.png"></div><p style="text-indent:25px">CCTV監(jiān)控系統(tǒng)：傳統(tǒng)的模擬監(jiān)控系統(tǒng)。傳統(tǒng)的模擬監(jiān)控模式在國(guó)內(nèi)大中城市剛剛引入道路監(jiān)控應(yīng)用時(shí)較為盛行，而較近幾年則日趨衰微，其主要缺陷如下：傳輸通道敷設(shè)費(fèi)用過(guò)于昂貴；由于各道路監(jiān)控點(diǎn)和監(jiān)控中心之間通常相距幾公里甚至幾十公里，而有效傳輸距離*300米左右的視頻電纜顯然無(wú)法達(dá)及，常規(guī)的解決辦法是在監(jiān)控點(diǎn)和監(jiān)控中心之間敷設(shè)光纜作為傳輸通道，光纜兩端接光端機(jī)作為視頻/光信號(hào)轉(zhuǎn)換設(shè)備。但這種解決方案實(shí)在過(guò)于昂貴，*光纜敷設(shè)費(fèi)用就占了整個(gè)監(jiān)控系統(tǒng)總投資費(fèi)用的80%以上；系統(tǒng)結(jié)構(gòu)復(fù)雜，監(jiān)控中心設(shè)備繁多，操作煩瑣；系統(tǒng)由攝像機(jī)、監(jiān)視電視墻、錄像機(jī)、控制矩陣、畫(huà)面分割器、解碼器及其它輔助設(shè)備組成，以同軸電纜為圖像傳輸介質(zhì)，以屏蔽雙絞線(xiàn)為控制信號(hào)傳輸介質(zhì)，設(shè)備繁多，結(jié)構(gòu)復(fù)雜，擴(kuò)容性差，而且多數(shù)設(shè)備是**設(shè)備，要求操作者經(jīng)培訓(xùn)方具備相應(yīng)的操作能力。</p><p style="text-indent:25px">高清網(wǎng)絡(luò)監(jiān)控系統(tǒng)如何選擇交換機(jī)：攝像機(jī)碼流：影響清晰度的因素，通常是視頻傳輸?shù)拇a流設(shè)定（包含了編碼發(fā)送及接收設(shè)備的編解碼能力等），這是前端攝象機(jī)的性能，與網(wǎng)絡(luò)無(wú)關(guān)。通常用戶(hù)認(rèn)為清晰度不高，認(rèn)為是網(wǎng)絡(luò)原因造成的想法實(shí)際是個(gè)誤區(qū)。一根千兆鏈路能夠支持?jǐn)?shù)據(jù)傳輸。計(jì)算：碼流：4Mbps。接入：24*4=96Mbps<1000Mbps<4435.2Mbp。匯聚：170*4=680Mbps<1000Mbps<4435.2Mbps。接入交換機(jī)。接入層交換機(jī)，主要考慮到接入到匯聚之間的鏈路帶寬。也即交換機(jī)的上聯(lián)鏈路容量需要大于同時(shí)容納的攝象機(jī)數(shù)*碼率。這樣視頻實(shí)時(shí)錄像就沒(méi)有問(wèn)題，但是如果有用戶(hù)在實(shí)時(shí)看到錄像，就還需要考慮到這個(gè)帶寬，每個(gè)用戶(hù)查看一個(gè)視頻占用的帶寬就是 4M，如果一個(gè)接入交換機(jī)的每個(gè)攝象機(jī)都有一個(gè)人在看，就需要攝象機(jī)數(shù)*碼率*（1+N）的帶寬，24*4*（1+1）=128M。閉路電視監(jiān)控系統(tǒng)因其能給人較直接的視覺(jué)、聽(tīng)覺(jué)感受，以及對(duì)被監(jiān)控對(duì)象的可視性、實(shí)時(shí)性及客觀性的記錄。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="三門(mén)視頻監(jiān)控系統(tǒng)CCTV,cctv監(jiān)控系統(tǒng)" src="https://tyunfile.71360.com/UploadFile/yiwanchuanbo/637423537888854459/5259308.png"></div><p style="text-indent:25px">CCTV監(jiān)控系統(tǒng)發(fā)展歷史：第三代視頻監(jiān)控系統(tǒng)以網(wǎng)絡(luò)為依托，以數(shù)字視頻的壓縮、傳輸、存儲(chǔ)和播放為中心，以智能實(shí)用的圖像分析為特色，并與報(bào)警系統(tǒng)、門(mén)禁系統(tǒng)完美的整合到一個(gè)使用平臺(tái)上，引發(fā)了視頻監(jiān)控行業(yè)的一次技術(shù)革命，迅速受到了安防行業(yè)和用戶(hù)的關(guān)注。與一代傳統(tǒng)閉路電視監(jiān)控系統(tǒng)（CCTV）和第二代半數(shù)字式監(jiān)控系統(tǒng)（DVR）相比，第三代監(jiān)控系統(tǒng)基于TCP/IP網(wǎng)絡(luò)協(xié)議，以分布式的概念出現(xiàn)，將監(jiān)控模式拓展為分散與集中的相輔相成，無(wú)限度的拓展了監(jiān)控的范圍。在硬件設(shè)備方面，第三代系統(tǒng)運(yùn)用了更為優(yōu)先的D/A、A/D轉(zhuǎn)換設(shè)備視頻服務(wù)器，或內(nèi)置處理器的網(wǎng)絡(luò)攝像機(jī)把圖像處理（采集、壓縮、協(xié)議轉(zhuǎn)換、傳輸）設(shè)置在監(jiān)控點(diǎn)，利用無(wú)處不在互聯(lián)網(wǎng)和局域網(wǎng)，達(dá)到全范網(wǎng)范圍內(nèi)的即插即用，實(shí)現(xiàn)了從圖像采集、傳輸、錄像、較終輸出的全過(guò)程數(shù)字化以該系統(tǒng)也更加委屈定，因而是真正意義的全數(shù)監(jiān)察院網(wǎng)絡(luò)監(jiān)控系統(tǒng)。閉路電視監(jiān)控系統(tǒng)能提供某些重要區(qū)域近距離的觀察、監(jiān)視和控制。三門(mén)視頻監(jiān)控系統(tǒng)CCTV</p><p style="text-indent:25px">終端一般包括監(jiān)視器、各種控制設(shè)備、和記錄設(shè)備等。三門(mén)視頻監(jiān)控系統(tǒng)CCTV</p><p style="text-indent:25px">高清網(wǎng)絡(luò)監(jiān)控系統(tǒng)如何選擇交換機(jī)：匯聚交換機(jī)：在匯聚層需要同時(shí)處理 170 只攝象機(jī)的 3‐4M 碼流（170* 4M=680M），也就意味著匯聚層交換機(jī)需要支持同時(shí)轉(zhuǎn)發(fā) 680M 以上的交換容量。一般存儲(chǔ)都接在匯聚上，所以視頻錄像是線(xiàn)速轉(zhuǎn)發(fā)。但要考慮到實(shí)時(shí)查看監(jiān)控的帶寬，每個(gè)連接占用 4M，一條 1000M 的鏈路可以支持 250 個(gè)攝像頭被調(diào)試調(diào)用。每臺(tái)接入交換機(jī)接 24 個(gè)攝像頭。250/24，相當(dāng)于網(wǎng)絡(luò)可以承受每個(gè)攝像頭同時(shí)有 10 位用戶(hù)在實(shí)時(shí)查看的壓力。中心交換機(jī)：中心交換機(jī)，需要考慮交換容量以及到匯聚的鏈路帶寬，因?yàn)榇鎯?chǔ)是放置在匯聚層的，所以中心交換機(jī)沒(méi)有視頻錄像的壓力，即只要考慮同時(shí)多少人看多少路視頻。三門(mén)視頻監(jiān)控系統(tǒng)CCTV</p><p style="text-indent:25px">上海翊皖船舶設(shè)備有限公司致力于機(jī)械及行業(yè)設(shè)備，以科技創(chuàng)新實(shí)現(xiàn)高品質(zhì)管理的追求。上海翊皖擁有一支經(jīng)驗(yàn)豐富、技術(shù)創(chuàng)新的專(zhuān)業(yè)研發(fā)團(tuán)隊(duì)，以高度的專(zhuān)注和執(zhí)著為客戶(hù)提供主機(jī)遙控修理，監(jiān)測(cè)報(bào)警系統(tǒng)修理，船舶電機(jī)維修，閥門(mén)遙控修理。上海翊皖致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶(hù)產(chǎn)品上的貼心，為用戶(hù)帶來(lái)良好體驗(yàn)。上海翊皖始終關(guān)注機(jī)械及行業(yè)設(shè)備行業(yè)。滿(mǎn)足市場(chǎng)需求，提高產(chǎn)品價(jià)值，是我們前行的力量。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2787710.html</p></div></div></div></div></div><div id="jiaci7c" class="page-right twoColRt"><div id="az7w2cp" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qacelnk" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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