任丘GPRS-dtu外殼標(biāo)準(zhǔn) 推薦咨詢(xún) 滄州萬(wàn)瑞電子機(jī)箱供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="支撐主動(dòng)心跳，堅(jiān)持長(zhǎng)久在線GPRS通訊網(wǎng)絡(luò)的長(zhǎng)處之一便是支撐GPRS終端設(shè)備長(zhǎng)久在線，因而典型的GPRSDTU在規(guī)劃上都支撐長(zhǎng)久在線功用，這就要求DTU包含了上電主動(dòng)撥號(hào)，任丘GPRS-dtu外殼標(biāo)準(zhǔn)、選用心跳包堅(jiān)持長(zhǎng)久在線（當(dāng)長(zhǎng)時(shí)刻沒(méi)有數(shù)"><meta name="keywords" content="任丘GPRS-dtu外殼標(biāo)準(zhǔn),GPRS-dtu外殼"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" 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href="http://www.cdcfah.com/cp/third-jwjjg_jjg/">鈑金加工</a>?任丘GPRS-dtu外殼標(biāo)準(zhǔn) 推薦咨詢(xún) 滄州萬(wàn)瑞電子機(jī)箱供應(yīng)</p><div id="xvbhnbn" class="leftbox clearfix"><h1>任丘GPRS-dtu外殼標(biāo)準(zhǔn) 推薦咨詢(xún) 滄州萬(wàn)瑞電子機(jī)箱供應(yīng)</h1><div id="dlz999n" class="proBig"><div id="b7fjfvt" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233383071_nhsdo_2282667.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jzn9lpl" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233383071_nhsdo_2282667.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7vjpbp7" 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>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>任丘GPRS-dtu外殼標(biāo)準(zhǔn),GPRS-dtu外殼</p><p><span>***更新：</span>2020-07-07 04:50:08</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="vzn975l" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">滄州萬(wàn)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(chǎng)四分場(chǎng)</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="7ftp7dh" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="v7lz9f9" class="box"><p><p style="text-indent:25px">支撐主動(dòng)心跳，堅(jiān)持長(zhǎng)久在線 GPRS通訊網(wǎng)絡(luò)的長(zhǎng)處之一便是支撐GPRS終端設(shè)備長(zhǎng)久在線，因而典型的GPRS DTU在規(guī)劃上都支撐長(zhǎng)久在線功用，這就要求DTU包含了上電主動(dòng)撥號(hào)，任丘GPRS-dtu外殼標(biāo)準(zhǔn)、選用心跳包堅(jiān)持長(zhǎng)久在線（當(dāng)長(zhǎng)時(shí)刻沒(méi)有數(shù)據(jù)通訊時(shí)，移動(dòng)網(wǎng)關(guān)將斷開(kāi)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(kāi)之前發(fā)送一個(gè)小數(shù)據(jù)包，以堅(jiān)持銜接不被斷開(kāi)）、支撐斷線主動(dòng)重連、主動(dòng)重?fù)芴?hào)等特色。（4）支撐參數(shù)裝備，任丘GPRS-dtu外殼標(biāo)準(zhǔn)，長(zhǎng)久保存 GPRS DTU作為一種通訊設(shè)備，其運(yùn)用場(chǎng)合十分廣（guang）泛。在不同的運(yùn)用中，數(shù)據(jù)中心的IP地址及端口號(hào)，串口的波特率等都是不同的。因而，GPRS DTU都應(yīng)支撐參數(shù)裝備，任丘GPRS-dtu外殼標(biāo)準(zhǔn)，而且將裝備好的參數(shù)保存內(nèi)部的長(zhǎng)久存儲(chǔ)器件內(nèi)（一般為FLASH或EEPROM等）。一旦上電，就主動(dòng)按照設(shè)置好的參數(shù)進(jìn)行作業(yè)。任丘GPRS-dtu外殼標(biāo)準(zhǔn)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="任丘GPRS-dtu外殼標(biāo)準(zhǔn),GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233383071_nhsdo_2282667.jpg"></div><p style="text-indent:25px">因?yàn)镚PRS DTU大多用于遙遠(yuǎn)的監(jiān)測(cè)現(xiàn)場(chǎng)，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(jiǎn)略測(cè)驗(yàn)就完畢選型作業(yè)，實(shí)際上是很不充分的。假如選用了不安穩(wěn)的GPRS DTU并大量運(yùn)用, 怎么可以在一開(kāi)端，就能***而快速的測(cè)驗(yàn)GPRS DTU安穩(wěn)性？這現(xiàn)已成為一個(gè)重要課題！遺憾的是，大多GPRS DTU廠家都只是宣揚(yáng)自己產(chǎn)品安穩(wěn)性好，而關(guān)于詳細(xì)的安穩(wěn)性測(cè)驗(yàn)辦法，則沉默不談！這里，是經(jīng)過(guò)驗(yàn)證的GPRS DTU安穩(wěn)性測(cè)驗(yàn)流程，可操作的GPRS DTU辨別辦法，這套測(cè)驗(yàn)辦法，可以快速辨別GPRS DTU的主要通訊功能和安穩(wěn)性。任丘GPRS-dtu外殼標(biāo)準(zhǔn)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="任丘GPRS-dtu外殼標(biāo)準(zhǔn),GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_7453289.jpg"></div><p style="text-indent:25px">支持自動(dòng)心跳，保持長(zhǎng)久在線 GPRS通信網(wǎng)絡(luò)的優(yōu)點(diǎn)之一就是支持GPRS終端設(shè)備長(zhǎng)久在線，因此典型的GPRS DTU 在設(shè)計(jì)上都支持長(zhǎng)久在線功能，這就要求DTU包含了上電自動(dòng)撥號(hào)、采用心跳包保持長(zhǎng)久在線（當(dāng)長(zhǎng)時(shí)間沒(méi)有數(shù)據(jù)通信時(shí)，移動(dòng)網(wǎng)關(guān)將斷開(kāi)DTU與中心的連接，心跳包就是DTU與數(shù)據(jù)中心在連接被斷開(kāi)之前發(fā)送一個(gè)小數(shù)據(jù)包，以保持連接不被斷開(kāi) ）、支持?jǐn)嗑€自動(dòng)重連、自動(dòng)重?fù)芴?hào)等特點(diǎn)。支持參數(shù)配置，長(zhǎng)久保存 GPRS DTU作為一種通信設(shè)備，其應(yīng)用場(chǎng)合十分廣（guang）泛。在不同的應(yīng)用中，數(shù)據(jù)中心的IP地址及端口號(hào)，串口的波特率等都是不同的。因此，GPRS DTU都應(yīng)支持參數(shù)配置，并且將配置好的參數(shù)保存內(nèi)部的長(zhǎng)久存儲(chǔ)器件內(nèi)（一般為FLASH或EEPROM 等）。一旦上電，就自動(dòng)按照設(shè)置好的參數(shù)進(jìn)行工作。 GPRS DTU的擴(kuò)展功能：較為專(zhuān)業(yè)的GPRS DTU還提供一些擴(kuò)展功能，主要包括：支持?jǐn)?shù)據(jù)中心域名解析 </p><p style="text-indent:25px">GPRS DTU在制定方案中的作用及其**功能我們?cè)谥贫o(wú)線數(shù)據(jù)工業(yè)監(jiān)控采集傳輸方案時(shí)，需要了解GPRS DTU的**功能，才能制定出基于通信網(wǎng)絡(luò)的GPRS DTU方案。下面介紹四種功能： 1）內(nèi)部集成TCP/IP協(xié)議棧 GPRS DTU內(nèi)部封裝了PPP撥號(hào)協(xié)議以及TCP/IP協(xié)議棧并且具有嵌入式操作系統(tǒng)，從硬件上，它可看作是嵌入式PC與無(wú)線GPRS MODEM的結(jié)合；它具備GPRS撥號(hào)上網(wǎng)以及TCP/IP數(shù)據(jù)通信的功能。 2）提供串口數(shù)據(jù)雙向轉(zhuǎn)換功能 GPRS DTU提供了串行通信接口，包括RS232,RS485,RS422等都屬于常用的串行通信方式，而且GPRS DTU在設(shè)計(jì)上大都將串口數(shù)據(jù)設(shè)計(jì)成“透明轉(zhuǎn)換”的方式，也就是說(shuō)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，而不需要改變?cè)械臄?shù)據(jù)通信內(nèi)容。因此，GPRS DTU可以和各種使用串口通信的用戶設(shè)備進(jìn)行連接，而且不需要對(duì)用戶設(shè)備作改動(dòng)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="任丘GPRS-dtu外殼標(biāo)準(zhǔn),GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018981911300941_nhsdo_8365549.jpg"></div><p style="text-indent:25px">簡(jiǎn)介 GPRS DTU是一種物聯(lián)網(wǎng)無(wú)線數(shù)據(jù)終端，運(yùn)用公用運(yùn)營(yíng)商網(wǎng)絡(luò)GPRS網(wǎng)絡(luò)(又稱(chēng)G網(wǎng))為用戶供給無(wú)線長(zhǎng)間隔數(shù)據(jù)傳輸功用. 選用高功能的工業(yè)級(jí)8/16/32位通訊處理器和工業(yè)級(jí)無(wú)線模塊，以嵌入式實(shí)時(shí)操作體系為軟件支撐平臺(tái)，一起供給RS232和RS485（或RS422）接口，可直接銜接串口設(shè)備，完成數(shù)據(jù)通明傳輸功用。該GPRS DTU已廣（guang）泛運(yùn)用于物聯(lián)網(wǎng)產(chǎn)業(yè)鏈中的M2M職業(yè)，如智能電網(wǎng)、智能交通、智能家居、金融、移動(dòng)POS終端、供應(yīng)鏈主動(dòng)化、工業(yè)主動(dòng)化、智能建筑、消防、公共安全、環(huán)境維護(hù)、氣候、數(shù)字化醫(yī)療、遙感勘測(cè)、農(nóng)業(yè)、林業(yè)、水務(wù)、煤礦、石化等范疇。任丘GPRS-dtu外殼定做</p><p style="text-indent:25px">任丘GPRS-dtu外殼標(biāo)準(zhǔn)</p><p style="text-indent:25px">在線閑暇測(cè)驗(yàn) 測(cè)驗(yàn)原因：測(cè)驗(yàn)GPRS DTU自己堅(jiān)持已建鏈路的才能，當(dāng)沒(méi)有數(shù)據(jù)時(shí)，GPRS DTU經(jīng)過(guò)心跳堅(jiān)持自己的銜接，GPRS DTU應(yīng)至少能堅(jiān)持均勻1小時(shí)以上的鏈路持續(xù)時(shí)刻，不發(fā)生斷線重連。測(cè)驗(yàn)辦法：讓GPRS DTU連上數(shù)據(jù)中心后不發(fā)任何數(shù)據(jù)，調(diào)查它能堅(jiān)持鏈路多久，時(shí)刻越長(zhǎng)越好。本項(xiàng)測(cè)驗(yàn)接近完畢時(shí)，應(yīng)向數(shù)據(jù)中心和DTU各發(fā)幾個(gè)數(shù)據(jù)包，來(lái)驗(yàn)證該DTU堅(jiān)持的閑暇鏈路是真實(shí)可用的，假如DTU或數(shù)據(jù)中心任何一方無(wú)法收到對(duì)方的數(shù)據(jù)包，則為不合格。二）數(shù)據(jù)中心封閉后康復(fù)測(cè)驗(yàn) 測(cè)驗(yàn)原因：數(shù)據(jù)中心在以后運(yùn)轉(zhuǎn)和維護(hù)進(jìn)程中，肯定會(huì)呈現(xiàn)暫時(shí)中止暫停服務(wù)的狀況，因而需求測(cè)驗(yàn)GPRS DTU在數(shù)據(jù)中心康復(fù)后的快速康復(fù)才能。測(cè)驗(yàn)辦法：讓數(shù)據(jù)中心封閉短時(shí)刻，如1分鐘，然后康復(fù)數(shù)據(jù)中心，看DTU是否能快速銜接上來(lái)，康復(fù)時(shí)刻應(yīng)該在5分鐘內(nèi)，越快越好，重復(fù)屢次該項(xiàng)測(cè)驗(yàn)，DTU有必要康復(fù)銜接，只需呈現(xiàn)一次DTU一直無(wú)法康復(fù)銜接的現(xiàn)象，即為不合格,以此例推就就可以判別出DTU質(zhì)量. 任丘GPRS-dtu外殼標(biāo)準(zhǔn)</p><p style="text-indent:25px">滄州萬(wàn)瑞電子機(jī)箱有限公司屬于機(jī)械及行業(yè)設(shè)備的高新企業(yè)，技術(shù)力量雄厚。萬(wàn)瑞電子機(jī)箱供應(yīng)是一家有限責(zé)任公司企業(yè)，一直貫徹“以人為本，服務(wù)于社會(huì)”的經(jīng)營(yíng)理念;“質(zhì)量高速，誠(chéng)守信譽(yù)，持續(xù)發(fā)展”的質(zhì)量方針。公司目前擁有***員工51~100人人，具有[ "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" ]等多項(xiàng)業(yè)務(wù)。萬(wàn)瑞電子機(jī)箱供應(yīng)將以真誠(chéng)的服務(wù)、創(chuàng)新的理念、***的產(chǎn)品，為彼此贏得全新的未來(lái)！</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/519506.html</p></div></div></div></div></div><div id="h7dz99r" class="page-right twoColRt"><div id="nt9rrvr" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zvlznr9" class="recomPic 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