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src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_7453289.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3meg958" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_7453289.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="l2amgty" 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>河北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>北京GPRS-dtu外殼廠家,GPRS-dtu外殼</p><p><span>***更新：</span>2020-08-01 14:01:44</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="kpd2m3h" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">滄州萬瑞電子機(jī)箱有限公司</a></p><p><span>聯(lián)系人：</span>李文超</p><p><span>郵箱: </span>2816163037@qq.com</p><p><span>電話: </span>19103271861</p><p><span>傳真: </span>0317_4371300</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0317-4371300</p><p><span>地址: </span>河北省滄州市青縣農(nóng)場四分場</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="o2jv03d" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="uovnhta" class="box"><p><p style="text-indent:25px">支撐主動心跳，堅持長久在線 GPRS通訊網(wǎng)絡(luò)的長處之一便是支撐GPRS終端設(shè)備長久在線，因而典型的GPRS DTU在規(guī)劃上都支撐長久在線功用，這就要求DTU包含了上電主動撥號、選用心跳包堅持長久在線（當(dāng)長時刻沒有數(shù)據(jù)通訊時，移動網(wǎng)關(guān)將斷開DTU與中心的銜接，心跳包便是DTU與數(shù)據(jù)中心在銜接被斷開之前發(fā)送一個小數(shù)據(jù)包，以堅持銜接不被斷開）、支撐斷線主動重連、主動重?fù)芴柕忍厣? （4）支撐參數(shù)裝備，長久保存 GPRS DTU作為一種通訊設(shè)備，其運用場合十分廣（guang）泛，北京GPRS-dtu外殼廠家。在不同的運用中，數(shù)據(jù)中心的IP地址及端口號，串口的波特率等都是不同的，北京GPRS-dtu外殼廠家。因而，GPRS DTU都應(yīng)支撐參數(shù)裝備，而且將裝備好的參數(shù)保存內(nèi)部的長久存儲器件內(nèi)（一般為FLASH或EEPROM等），北京GPRS-dtu外殼廠家。一旦上電，就主動按照設(shè)置好的參數(shù)進(jìn)行作業(yè)。北京GPRS-dtu外殼廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京GPRS-dtu外殼廠家,GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_7453289.jpg"></div><p style="text-indent:25px"> 電源　　輸入電壓：DTP_RB+ DTP_RC+: +5～12V DC。DTP_RD+: 12~24VDC 　　功耗：比較大電力耗費5W。待機(jī)電力耗費0.5W。 ? 功耗待機(jī) 3G:40~55mA@12VDC 2G:36~40mA@12VDC 通訊 3G:88~190mA@12VDC 2G:62~68mA@12VDC ? 外型尺度　　DTP_RD+型：PVC塑料外殼，尺度：98×90×37mm 外殼金屬外殼，維護(hù)等級IP30。外殼和體系安全隔離，特別合適工控現(xiàn)場運用 ? 環(huán)境　　作業(yè)溫度：-20℃～55℃ 　　存儲溫度：-40℃～85℃ 　　相對濕度：5%～95%不結(jié)露　　環(huán)境要求：無腐蝕性氣體，無液體噴濺，無金屬粉塵，無激烈震動，無激烈電磁攪擾。　　信號強(qiáng)度：有手機(jī)信號（中國移動或中國聯(lián)通）北京GPRS-dtu外殼廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京GPRS-dtu外殼廠家,GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233383071_nhsdo_2282667.jpg"></div><p style="text-indent:25px">在實質(zhì)上，DTU和數(shù)據(jù)處理中心樹立的是SOCKET銜接。DTU是SOCKET客戶端，數(shù)據(jù)處理中心是SOCKET的服務(wù)端。SOCKET銜接有TCP協(xié)議和UDP協(xié)議之分，DTU和中心要運用相同的協(xié)議，這個一般都有裝備軟件進(jìn)行裝備。給DTU裝備好中心的IP地址和端口號后，則把DTU經(jīng)過串口和用戶的設(shè)備相連。DTU和水文、電力、氣候、環(huán)保等用戶設(shè)備經(jīng)過串口連起來放置在現(xiàn)場。 DTU上電后首要注冊到移動的網(wǎng)絡(luò)，然后發(fā)送樹立SOCKET的懇求包給移動，移動把這個懇求發(fā)送到因特網(wǎng)。中心的服務(wù)端軟件接收到懇求后樹立銜接，并發(fā)送應(yīng)答信息。 </p><p style="text-indent:25px">支持遠(yuǎn)程參數(shù)配置/遠(yuǎn)程固件升級、支持遠(yuǎn)程短信/電話喚醒、支持本地串口固件升級、提供短信通道、提供DTU在線／離線電平指示等。這些擴(kuò)展功能可以增強(qiáng) 系統(tǒng)的可靠性，以及方便用戶的使用及維護(hù)。在工作方式上,GPRS DTU于GPRS MODEM的區(qū)別就是GPRS DTU內(nèi)部CPU在主動進(jìn) 行控制撥號和處理TCP/IP協(xié)議包.而GPRS MODEM則是被動的,需要外部設(shè)備來進(jìn)行撥號和進(jìn)行TCP/IP協(xié)議包處理. GPRS DTU 簡稱GPRS模塊，即串口服務(wù)器的無線版，其功用與串口服務(wù)器類似。運用移動和聯(lián)通遍布全國的GSM網(wǎng)絡(luò)，經(jīng)過短信辦法進(jìn)行數(shù)據(jù)傳輸。8路開關(guān)量輸入 8路模仿量輸入可以做報警功用8路開關(guān)量輸出可以做操控設(shè)備功用易操作簡略、實用，可以完成無人看守設(shè)備，給企業(yè)帶來方便。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="北京GPRS-dtu外殼廠家,GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_2261148.jpg"></div><p style="text-indent:25px">內(nèi)部集成TCP/IP協(xié)議棧 GPRS DTU內(nèi)部封裝了PPP撥號協(xié)議以及TCP/IP協(xié)議棧而且具有嵌入式操作體系，從硬件上，它可看作是嵌入式PC與無線GPRS MODEM的結(jié)合；它具有GPRS撥號上網(wǎng)以及TCP/IP數(shù)據(jù)通訊的功用。（2）供給串口數(shù)據(jù)雙向轉(zhuǎn)換功用 GPRS DTU供給了串行通訊接口，包含RS232,RS485,RS422等都?xì)w于常用的串行通訊辦法，而且GPRS DTU在規(guī)劃上大都將串口數(shù)據(jù)規(guī)劃成“通明轉(zhuǎn)換”的辦法，也便是說GPRS DTU可以將串口上的原始數(shù)據(jù)轉(zhuǎn)換成TCP/IP數(shù)據(jù)包進(jìn)行傳送，而不需求改變原有的數(shù)據(jù)通訊內(nèi)容。因而，GPRS DTU可以和各種運用串口通訊的用戶設(shè)備進(jìn)行銜接，而且不需求對用戶設(shè)備作改動。北京GPRS-dtu外殼標(biāo)準(zhǔn)</p><p style="text-indent:25px">北京GPRS-dtu外殼廠家</p><p style="text-indent:25px">因為GPRS DTU大多用于遙遠(yuǎn)的監(jiān)測現(xiàn)場，因而GPRS DTU的安穩(wěn)性就變得十分重要。許多用戶選用GPRS DTU，*在前期做了一些簡略測驗就完畢選型作業(yè)，實際上是很不充分的。假如選用了不安穩(wěn)的GPRS DTU并大量運用, 怎么可以在一開端，就能***而快速的測驗GPRS DTU安穩(wěn)性？這現(xiàn)已成為一個重要課題！遺憾的是，大多GPRS DTU廠家都只是宣揚自己產(chǎn)品安穩(wěn)性好，而關(guān)于詳細(xì)的安穩(wěn)性測驗辦法，則沉默不談！這里，是經(jīng)過驗證的GPRS DTU安穩(wěn)性測驗流程，可操作的GPRS DTU辨別辦法，這套測驗辦法，可以快速辨別GPRS DTU的主要通訊功能和安穩(wěn)性。北京GPRS-dtu外殼廠家</p><p style="text-indent:25px">滄州萬瑞電子機(jī)箱有限公司始建于2016-01-27，坐落于河北省滄州市青縣農(nóng)場四分場，現(xiàn)有員工51~100人余人。萬瑞是滄州萬瑞電子機(jī)箱有限公司的主營品牌，是專業(yè)的電子機(jī)箱、機(jī)柜、面板、模具、五金配件制造、加工:機(jī) 箱、機(jī)柜的整機(jī)組裝;配電箱、配電柜、電氣成套設(shè)備、機(jī) 械設(shè)備配件制造、加工(不含噴涂和表面化學(xué)處理) (依法須經(jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動) 公司，擁有自己**的技術(shù)體系。公司不**提供專業(yè)的電子機(jī)箱、機(jī)柜、面板、模具、五金配件制造、加工:機(jī) 箱、機(jī)柜的整機(jī)組裝;配電箱、配電柜、電氣成套設(shè)備、機(jī) 械設(shè)備配件制造、加工(不含噴涂和表面化學(xué)處理) (依法須經(jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動) ,同時還建立了完善的售后服務(wù)體系,為客戶提供質(zhì)量的產(chǎn)品和服務(wù)。誠實、守信是對企業(yè)的經(jīng)營要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***的[ "鈑金設(shè)備外殼加工", "機(jī)箱機(jī)柜加工定做", "儀器儀表外殼", "配電箱加工" ]。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/773766.html</p></div></div></div></div></div><div id="x78c2hd" class="page-right twoColRt"><div id="hroqfmy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7vxzwya" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="blnkmtv" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" 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