吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā) 和諧共贏滄州萬(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="DTU發(fā)送的懇求信息是因特網(wǎng)上的數(shù)據(jù)包，有一些原因會(huì)阻止中心收到銜接懇求包，吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)，這樣也就不能樹(shù)立銜接。**常見(jiàn)的有中心的電腦上有殺毒軟件，吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)、防火墻等把這些數(shù)據(jù)包給屏蔽了。另一是中心"><meta name="keywords" content="吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā),GPRS-dtu外殼"><link rel="canonical" href="http://m.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" href="/static/new_net_01/css/404.css"> <meta 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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>吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā),GPRS-dtu外殼</p><p><span>***更新：</span>2020-08-03 16:04:34</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="r2y233w" 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="xw3lqd2" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="poli8nh" class="box"><p><p style="text-indent:25px">DTU發(fā)送的懇求信息是因特網(wǎng)上的數(shù)據(jù)包，有一些原因會(huì)阻止中心收到銜接懇求包，吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)，這樣也就不能樹(shù)立銜接。**常見(jiàn)的有中心的電腦上有殺毒軟件，吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)、防火墻等把這些數(shù)據(jù)包給屏蔽了。另一是中心電腦是經(jīng)過(guò)路由器上網(wǎng)的，在路由器上要設(shè)置數(shù)據(jù)轉(zhuǎn)發(fā)。SOCKET銜接樹(shù)立后就可以雙向通訊了。作業(yè)進(jìn)程 GPRS DTU上電后，首要讀出內(nèi)部FLASH中保存的作業(yè)參數(shù)（包含GPRS撥號(hào)參數(shù)，串口波特率，數(shù)據(jù)中心IP地址等等，事前現(xiàn)已裝備好）。 GPRS DTU登陸GSM網(wǎng)絡(luò)，然后進(jìn)行GPRS PPP撥號(hào)。撥號(hào)成功后，GPRS DTU將取得一個(gè)由移動(dòng)隨機(jī)分配的內(nèi)部IP地址(一般是10.X.X.X)。也便是說(shuō)，GPRS DTU處于移動(dòng)內(nèi)網(wǎng)中，而且其內(nèi)網(wǎng)IP地址通常是不固定的，隨著每次撥號(hào)而變化。咱們可以理解為GPRS DTU這時(shí)是一個(gè)移動(dòng)內(nèi)部局域網(wǎng)內(nèi)的設(shè)備，吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)，經(jīng)過(guò)移動(dòng)網(wǎng)關(guān)來(lái)完成與外部Internet公網(wǎng)的通訊。這與局域網(wǎng)內(nèi)的電腦經(jīng)過(guò)網(wǎng)關(guān)拜訪外部網(wǎng)絡(luò)的辦法類(lèi)似。吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā),GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018981911300941_nhsdo_3459769.jpg"></div><p style="text-indent:25px">因?yàn)門(mén)CP/UDP通訊銜接現(xiàn)已樹(shù)立，就可以進(jìn)行數(shù)據(jù)雙向通訊了。關(guān)于DTU來(lái)說(shuō)，只需樹(shù)立了與數(shù)據(jù)中心的雙向通訊，完成用戶串口數(shù)據(jù)與GPRS網(wǎng)絡(luò)數(shù)據(jù)包的轉(zhuǎn)換就相對(duì)簡(jiǎn)略了。一旦接收到用戶的串口數(shù)據(jù)，DTU就當(dāng)即把串口數(shù)據(jù)封裝在一個(gè)TCP/UDP包里，發(fā)送給數(shù)據(jù)中心。反之，當(dāng)DTU收到數(shù)據(jù)中心發(fā)來(lái)的TCP/UDP包時(shí)，從中取出數(shù)據(jù)內(nèi)容，當(dāng)即經(jīng)過(guò)串口發(fā)送給用戶設(shè)備。經(jīng)過(guò)有線的數(shù)據(jù)采集中心，一起與許多個(gè)GPRS DTU進(jìn)行雙向通訊。這是目前GPRS DTU運(yùn)用體系中**為常用的辦法。北京GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā),GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_5181040.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(fèi)5W。待機(jī)電力耗費(fèi)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(jí)IP30。外殼和體系安全隔離，特別合適工控現(xiàn)場(chǎng)運(yùn)用 ? 環(huán)境　　作業(yè)溫度：-20℃～55℃ 　　存儲(chǔ)溫度：-40℃～85℃ 　　相對(duì)濕度：5%～95%不結(jié)露　　環(huán)境要求：無(wú)腐蝕性氣體，無(wú)液體噴濺，無(wú)金屬粉塵，無(wú)激烈震動(dòng)，無(wú)激烈電磁攪擾。　　信號(hào)強(qiáng)度：有手機(jī)信號(hào)（中國(guó)移動(dòng)或中國(guó)聯(lián)通） </p><p style="text-indent:25px">供電：外接電源：DC 9V 500mA 寬電壓供電：DC 5-32V 通訊電流：350mA 待機(jī)電流：35mA 6、尺度產(chǎn)品外形尺度：92x62x22 mm（不包含天線及固定件）產(chǎn)品包裝尺度：298x226x60mm 7、分量 0.41KG 8、其他參數(shù): 作業(yè)環(huán)境溫度 -25~+65oC 儲(chǔ)存溫度 -40~+85oC 相對(duì)濕度 95%(無(wú)凝結(jié)) 軟件功用 1. TCP/UDP通明數(shù)據(jù)傳輸；支撐多種作業(yè)形式，心跳包技術(shù) 2. 智能防掉線，支撐在線檢測(cè)，在線堅(jiān)持，掉線主動(dòng)重?fù)?，確保設(shè)備長(zhǎng)久在線 3. 支撐RSA，RC4加密算法 4. 支撐虛擬值守VWM（Virtual Man Watch）功用，確保體系安穩(wěn)可靠 5. 支撐虛擬數(shù)據(jù)**網(wǎng)（APN/VPDN） 6. 支撐數(shù)據(jù)中心動(dòng)態(tài)域名和IP地址拜訪 7. 支撐DNS動(dòng)態(tài)獲取，避免DNS服務(wù)器異常導(dǎo)致的設(shè)備當(dāng)機(jī) 8. 支撐雙數(shù)據(jù)中心備份 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā),GPRS-dtu外殼" src="http://tyunfile.71360.com/UpLoadFile/2019/8/20/11/637018976233070085_nhsdo_1441032.jpg"></div><p style="text-indent:25px">11. 交通指示 12. 煤炭監(jiān)控 13. 地震監(jiān)測(cè) 14. 車(chē)輛誘導(dǎo) 15. 供水監(jiān)控 16. 高速公路監(jiān)測(cè) 17. 噪聲實(shí)時(shí)監(jiān)控 18. 環(huán)保重點(diǎn)污染源監(jiān)控 19. 供水管網(wǎng)實(shí)時(shí)傳輸監(jiān)控 20. 電力配網(wǎng)主動(dòng)化遙控體系 21. 各類(lèi)國(guó)內(nèi)外帶串口或485接口的PLC，RTU完成無(wú)線數(shù)據(jù)傳輸?shù)? DTU通訊的實(shí)質(zhì) GPRS DTU**基本的用法是：在DTU中放入一張開(kāi)通GPRS功用的SIM卡，DTU上電后先注冊(cè)到GPRS網(wǎng)絡(luò)，然后經(jīng)過(guò)GPRS網(wǎng)絡(luò)和數(shù)據(jù)處理中心樹(shù)立銜接。這條銜接觸及了無(wú)線網(wǎng)絡(luò)運(yùn)營(yíng)商，因特網(wǎng)寬帶供貨商，用戶公司的網(wǎng)絡(luò)狀況，以及用戶的電腦裝備等環(huán)節(jié)，因而要樹(shù)立這條銜接需求把各部分都裝備好。北京GPRS-dtu外殼國(guó)標(biāo)</p><p style="text-indent:25px">吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)</p><p style="text-indent:25px"> 恰當(dāng)?shù)臄?shù)據(jù)實(shí)時(shí)性要求國(guó)內(nèi)GPRS網(wǎng)絡(luò)，其傳輸數(shù)據(jù)的延時(shí)為秒級(jí)規(guī)模。在絕大部分時(shí)刻下，GPRS數(shù)據(jù)通訊的均勻全體延時(shí)為2秒左右。也便是說(shuō)，從GPRS DTU端發(fā)送的數(shù)據(jù)包將大致在2秒鐘后抵達(dá)數(shù)據(jù)中心。反之，從數(shù)據(jù)中的數(shù)據(jù)包也大致在2秒鐘后抵達(dá)GPRS DTU。總的來(lái)說(shuō)，GPRS這種實(shí)時(shí)性，可以滿意大多數(shù)職業(yè)運(yùn)用的要求。可是，關(guān)于一些特定的運(yùn)用體系，假如不能接受2秒左右的均勻延時(shí)，那么GPRS通訊辦法就或許是不合適的。（別的，CDMA網(wǎng)絡(luò)的傳輸延時(shí)也是1秒-2秒左右）。從另一個(gè)角度來(lái)講，假如咱們要規(guī)劃的體系希望經(jīng)過(guò)GPRS網(wǎng)絡(luò)來(lái)傳輸數(shù)據(jù)，那么就要在規(guī)劃通訊協(xié)議時(shí)分考慮這種延時(shí)的狀況。吉林GPRS-dtu外殼經(jīng)銷(xiāo)批發(fā)</p><p style="text-indent:25px">滄州萬(wàn)瑞電子機(jī)箱有限公司是一家電子機(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(xiàng)目，經(jīng)相關(guān)部門(mén)批準(zhǔn)后方可開(kāi)展經(jīng)營(yíng)活動(dòng)) 的公司，創(chuàng)建于2016-01-27。公司自2016-01-27成立以來(lái)，投身于[ "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" ]，是機(jī)械及行業(yè)設(shè)備的主力軍。依托效率源扎實(shí)的技術(shù)積累、完善的產(chǎn)品體系、深厚的行業(yè)基礎(chǔ)，目前擁有員工數(shù)51~100人，年?duì)I業(yè)額達(dá)到50-100萬(wàn)元。萬(wàn)瑞電子機(jī)箱供應(yīng)始終關(guān)注機(jī)械及行業(yè)設(shè)備市場(chǎng)，以敏銳的市場(chǎng)洞察力以準(zhǔn)確定位，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來(lái)源地址: 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