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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3dbp3fn" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/szfx/2019/11/637097726897157781/6370977268971577812676357.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3nd5b37" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>無錫安居寶樓宇對講拓撲圖,樓宇對講</p><p><span>***更新：</span>2020-11-03 09:05:43</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="jnb3jpv" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">蘇州晟盟信息科技有限公司</a></p><p><span>聯(lián)系人：</span>嚴經(jīng)理</p><p><span>郵箱: </span>13812604426@163.com</p><p><span>電話: </span>13812604426</p><p><span>傳真: </span>0512_66000013</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0512-66000013</p><p><span>地址: </span>濱河路588號B座508室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="hhxftnd" class="page-proshow02"><p class="title">詳細說明</p><div id="t5njxlb" class="box"><p><p> 樓宇對講主要設(shè)備有哪些（5）網(wǎng)絡(luò)交換機 </p> <p> <p> 每個小區(qū)聯(lián)網(wǎng)時必須配匹一個，它是整個小區(qū)網(wǎng)絡(luò)資源管理器，對講時選用哪個通道、數(shù)據(jù)通信仲裁、通信信號中繼、協(xié)議變換等都要經(jīng)過交換機處理。 </p> <p> <br /> </p> 樓宇對講主要設(shè)備有哪些（6）聯(lián)網(wǎng)器 </p> <p> 分管理機（棟管理機、總管理機除外）、主機（副機除外）、圍墻機，每臺必須配置一個。它是聯(lián)網(wǎng)的必要設(shè)備，有了它，除了可以節(jié)省線材外，無錫安居寶樓宇對講拓撲圖，無錫安居寶樓宇對講拓撲圖，還可以減少布線的很多麻煩。 </p> <p> <br /> </p> <p> 樓宇對講主要設(shè)備有哪些（7）主呼通道 </p> <p> <p> 指主機發(fā)話輸入端至分機收話輸出端的通道。 </p> <p> <br /> </p> <p> 門口主機－分機通話通道或管理員機－門口主機－住戶通話通道（個別廠家叫做音頻上行通道）。 </p> <p> <br /> </p> 樓宇對講主要設(shè)備有哪些（8）應(yīng)答通道 </p> <p> <p> 分機－門口機通話通道或分機－門口主機－管理員機通話通道（個別廠家叫做音頻下行通道） </p> <p> <br /> </p> <p> 音頻的主呼通道及音頻的應(yīng)答通道總體上我們稱之為樓宇對講系統(tǒng)的音頻通道，根據(jù)廠家的不同，無錫安居寶樓宇對講拓撲圖，音頻通道使用的線材數(shù)量有所不同： </p> <p> <br /> </p> <p> 1)將音頻主呼通道及音頻應(yīng)答通道使用不同的線路傳輸，此時因為音頻的主呼與應(yīng)答通道不在相同的線路內(nèi)傳輸，從而達到雙工通話的功能。由于分線傳輸，線路增加（共兩條音頻線路，實際上應(yīng)該是三條音頻線路：應(yīng)該加上系統(tǒng)地線），但是對于單邊的線路故障比較好 </p> <p> <br /> </p> 無錫安居寶樓宇對講拓撲圖</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫安居寶樓宇對講拓撲圖,樓宇對講" src="http://tyunfile.71360.com/UpLoadFile/szfx/2019/11/637097726897157781/6370977268971577812676357.jpg"></div><p> 判斷：如果系統(tǒng)音頻出現(xiàn)問題，通過音頻的單向可以了解到是分機－主機的音頻線路問題，還是主機－分機的音頻線路問題（分機能夠聽到主機通話，而主機不能聽到分機通話，或相反）。 </p> <p> <br /> </p> <p> 2)將音頻主呼通道及音頻應(yīng)答通道使用單一的線路傳輸，通過復(fù)用的技術(shù)進行雙工通話。由于采用單線傳輸，線路相對于雙線傳輸減少一根。 </p> <p> <br /> </p> <p> 樓宇對講主要設(shè)備有哪些（9）視頻通道 </p> <p> <p> 指主機所攝圖像傳輸?shù)椒謾C監(jiān)視器的通道 </p> <p> <br /> </p> <p> 通常的樓宇對講系統(tǒng)的視頻通道是與系統(tǒng)的通訊、音頻通道完全分開的，采用電視監(jiān)控的視頻傳輸原理進行通道的設(shè)計。由于樓宇對講系統(tǒng)相當(dāng)于一點對多點的視頻傳輸系統(tǒng)，在保證視頻傳輸清晰的前提下需要保證每條視頻通道的阻抗匹配（75歐姆）。在樓宇對講系統(tǒng)中，視頻分配器是系統(tǒng)視頻通道中一個必不可少的器件。視頻分配器的功能主要是對一個視頻信號進行多路分配，并保證系統(tǒng)中任一視頻通道的視頻阻抗匹配的均衡。 </p> 無錫可視樓宇對講室內(nèi)機</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="無錫安居寶樓宇對講拓撲圖,樓宇對講" src="http://tyunfile.71360.com/UpLoadFile/szfx/2019/11/637097726725637078/6370977267256370784674628.jpg"></div><p> 在樓宇對講系統(tǒng)中使用的門禁系統(tǒng)一般采用感應(yīng)式ID卡及感應(yīng)式IC卡。小區(qū)一卡通一般采用感應(yīng)式IC卡來完成（因為IC卡有比較強大的存儲功能，可將很多信息存儲在卡內(nèi)），IC卡目前通常采用LEGIC技術(shù)與MIFARE技術(shù)兩種。由于LEGIC技術(shù)卡在研制初期是使用在**領(lǐng)域內(nèi)，相比較而言，感應(yīng)距離、可靠性、數(shù)據(jù)運算能力、抗干擾能力等均比MIFARE技術(shù)卡強，但由于價格的原因，MIFARE技術(shù)卡在實際中大量的應(yīng)用。 </p> <p> <br /> </p> <p> 在樓宇對講系統(tǒng)中集成的門禁系統(tǒng)，由于讀卡部分必須在門口主機上，門口主機必須有一塊專門進行讀卡的部分。感應(yīng)卡一般采用射頻技術(shù)，金屬的物體對于感應(yīng)卡有屏蔽作用，從而影響卡的感應(yīng)舉例。門口主機的感應(yīng)卡部分必須采用非金屬質(zhì)地，以降低對門禁感應(yīng)卡的屏蔽。 </p> <p> <br /> </p><p> C、機功能不同：主機分成對講主機（根據(jù)廠家不同還有非可視主機的稱謂）、可視主機。 </p> <p> <br /> </p> <p> a、對講主機：主機主要功能為呼叫住戶、與住戶通話、住戶遙控開鎖。此類型的主機的通道主要是控制通道（呼叫住戶功能及開鎖功能）和音頻通道（以下將具體進行講解）； </p> <p> <br /> </p> <p> b、可視主機：主機的主要功能組成為呼叫住戶、與住戶通話、住戶遙控開鎖及住戶可看到主機的視頻信號。此類型的主機的通道主要是控制通道（呼叫住戶功能及開鎖）、音頻通道及視頻通道（以下將具體進行講解）。 </p> <p> <br /> </p><p> 6)內(nèi)解碼：內(nèi)解碼系統(tǒng)由于將解碼器放置在分機內(nèi)部，理論上可以將各個分機串聯(lián)在一條數(shù)據(jù)通道上，接線十分方便，但在實際應(yīng)用中內(nèi)置解碼分機系統(tǒng)出現(xiàn)了一些非常難處理的情況，如：一戶出現(xiàn)問題，將影響到一條線上的所有住戶，而且問題很難排查（因為是內(nèi)解碼，必須進入住戶室內(nèi)對分機及線路進行檢查，而且接線錯誤等問題也可以造成比較巨大的影響）。內(nèi)解碼系統(tǒng)的廠家自98年以后開始增加短路保護器（根據(jù)廠家不同也有叫隔離器），具體方式就是將原先串聯(lián)在一起的各個住戶分機通過短路保護器進行隔離。增加短路保護器后總體的布線結(jié)構(gòu)與外置解碼器系統(tǒng)相同（主機將各個短路保護器串聯(lián)，再從短路保護器向各個住戶分機進行分支，這樣的布線方式我們稱之為樓內(nèi)總線布線方式）。一些內(nèi)解碼系統(tǒng)的廠家在短路保護器上增加了如故障指示等外置解碼器所擁有的功能，使樓宇對講系統(tǒng)的布線方式逐漸的趨于統(tǒng)一。 </p> <p> <br /> </p> <p> 通過樓內(nèi)總線方式進行的單棟住宅的樓宇對講系統(tǒng)布線有更好的維護性能，系統(tǒng)在進入使用階段后，對于日常的維護工作提供很多幫助。無錫安居寶樓宇對講拓撲圖</p><p style="text-indent:25px">無錫安居寶樓宇對講拓撲圖</p><p> D、音頻部分：主機的音頻部分由喇叭和咪頭組成，主要進行音頻播放與音頻接收的功能。音頻部分在主機的內(nèi)部。 </p> <p> <br /> </p> <p> E、視頻部分：主機的視頻部分由攝像頭組成，完成主機的圖像采集，再通過視頻通道發(fā)送到分機顯示屏。目前樓宇對講系統(tǒng)主機的視頻部分由于受到空間的局限，攝像頭基本采用單板機，與專業(yè)監(jiān)控系統(tǒng)的攝像機在性能上有比較大的區(qū)別：像素低（樓宇可視對講系統(tǒng)分機的顯示屏比較高只能達到380線，主機的攝像頭一般采用在480線以下產(chǎn)品）、逆光性能差（單板機由于體積的限制，樓宇對講系統(tǒng)中使用的攝像頭一般不具備逆光補償功能，只有簡單的電子快門）、照度限制（樓宇對講系統(tǒng)中使用黑白攝像頭照度均在0.1LUX左右，均采用紅外補光功能，但距離有限制）。由于以上原因，樓宇對講系統(tǒng)主機視頻部分的比較好監(jiān)視范圍一般在距離主機0.5米的范圍內(nèi)（再遠的距離也可以看到，但是清晰度將降低）。無錫安居寶樓宇對講拓撲圖</p><p style="text-indent:25px">蘇州晟盟信息科技有限公司是一家公司以智能化安防工程和智能一卡通工程為主，同時承接計算機網(wǎng)絡(luò)、監(jiān)控系統(tǒng),門禁考勤一卡通,車輛識別道閘,樓宇對講,綜合布線,弱電機房,集團程控電話交換機,報警系統(tǒng),電子圍欄, LED大屏拼接,視頻會議系統(tǒng),廣播音響,多媒體信息發(fā)布,背景音樂,巡更系統(tǒng)等系統(tǒng)工程。的公司，致力于發(fā)展為創(chuàng)新務(wù)實、誠實可信的企業(yè)。晟盟科技作為公司以智能化安防工程和智能一卡通工程為主，同時承接計算機網(wǎng)絡(luò)、監(jiān)控系統(tǒng),門禁考勤一卡通,車輛識別道閘,樓宇對講,綜合布線,弱電機房,集團程控電話交換機,報警系統(tǒng),電子圍欄, LED大屏拼接,視頻會議系統(tǒng),廣播音響,多媒體信息發(fā)布,背景音樂,巡更系統(tǒng)等系統(tǒng)工程。的企業(yè)之一，為客戶提供良好的智能化弱電，智能化工程，智能化維保，IT網(wǎng)絡(luò)外包。晟盟科技致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。晟盟科技始終關(guān)注安全、防護市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1831022.html</p></div></div></div></div></div><div id="xpf555b" class="page-right twoColRt"><div id="nvjxlvl" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vvlbhl3" 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配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="ntpv573" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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