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通信電子]基于gprs遠(yuǎn)程監(jiān)控系統(tǒng)數(shù)據(jù)終端的研究外文資料翻譯(更新版)

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【正文】 a via the Inter to remote monitoring center in the process. Realization of the difficult process of the System posted GGSN is a difficult process. Gate way GPRS terminal that is recorded (GGSN) and Gateway to LCP, PAP,IPCP agreement in the course of our consultations. Network consultation process is a plex process, the process is as follows. gateway. GPRS dialup access, the first successful return to a PAP REQ frame, LCP REQ we sent an empty frame, the agreement forced to the stage of negotiations, then Gateway GPRS send LCP installed frame, we reject all requests to install and test mode PAP or CHAP certify GPRR Gateway option, we will accept only the PAP, PAP user name or password and then verify the process, if successful, Message Gateway GPRS will return IPCP dynamic allocation of IP addresses. Gateway GPRS time to finish the consultation process . 5 Conclusion Remote monitoring technology in the field of industrial control applications are extensive, in the power system. Network ignite oil investigation, irrigation, transportation and other areas has a very important role, using GPRS wireless technology makes realtime monitoring system reliability has been greatly improved. Intelligent Monitoring System to further promote the industrial and information technology. 。附件 2:外文原文 Longdistance supervisory system data terminal research Based on GPRS 1 introduction With the development of puter technology, Inter technology is particularly extensive and indepth various aspects of people39。 發(fā)送 “ATDT*99***1” 若 Modem 返回 “310D” 則表示成功接通 GPRS 網(wǎng)絡(luò)。 遠(yuǎn)程通信模塊主要包含 GPRS 無線模塊、 SIM 卡和串口模塊 MAX3238 三部分,SIEMENS GPRS 無線模塊采用 MC35GPRS 模塊,其功能是將數(shù)據(jù)或命令通過與其連接天線發(fā)射出去,或接收遠(yuǎn)端監(jiān)控中心發(fā)送的數(shù)據(jù),再將接收到的數(shù)據(jù)或命令進(jìn)行相應(yīng)的協(xié)議 處理后,通過 MAX3238 送入單片機(jī)進(jìn)行處理, MX3238 起電平轉(zhuǎn)換和串行通信的功能,由于傳輸數(shù)據(jù)的承載方式是 GPRS 網(wǎng)絡(luò),所以 SIM 卡是不可缺少的,功能是存儲(chǔ)數(shù)據(jù)和在安全條件下完成客戶身份鑒定和客戶信息加密計(jì)算的全過程。 提供實(shí)時(shí)在線功能 用戶將初始處于連線和在線狀態(tài),這將使訪問服務(wù)變得非常簡(jiǎn)單、快速。 88888 畢業(yè)設(shè)計(jì) (論文 )外文資料翻譯 系 (院): 電子信息工程系 專 業(yè): 電氣工程及其自動(dòng)化 姓 名: 學(xué) 號(hào): 外文出處: Mobile Networks and Application ( 用外文寫 ) 附 件: ; 。 接入時(shí)間短 GPRS 接入等待時(shí)間短,可快速建立連接,平均為 2s。 數(shù)據(jù)終端設(shè)備 GPRS 數(shù) 據(jù) 終 端 數(shù)據(jù)中心設(shè)備 GPRS 網(wǎng)絡(luò) Inter AD0832 E2PROM X25045 中央 處理 模塊 AT89C55 串行接口模塊 顯示模塊 通信模塊 GPRS 終端硬件結(jié)構(gòu) 數(shù)據(jù)處理模塊主要包含 AT89C55, X25045 兩個(gè)芯片, AT89C55 用于處理與遠(yuǎn)程通信模塊、模 /數(shù)轉(zhuǎn)換模塊和顯示模塊間的數(shù)據(jù)傳輸,為了保證數(shù)據(jù)不會(huì)因?yàn)榈綦姸鴣G失,采用串行 E2PROM 器件 X25045 對(duì)數(shù)據(jù)進(jìn)行存儲(chǔ)。 AT+CGDCONT=1, “IP” , “CMNET” ; //設(shè)置 GPRS 接入網(wǎng)關(guān),如果 Modem 返回 “310D” 則表示初始化成功。 4 結(jié) 論 遠(yuǎn)程監(jiān)控技術(shù)在工業(yè)控制領(lǐng)域中的應(yīng)用非常廣泛,在電力系統(tǒng)、燃 氣管道 管網(wǎng)、石油勘測(cè)、水利、交通運(yùn)輸?shù)阮I(lǐng)域有著非常重要的作用,采用 GPRS 無線技術(shù)使得監(jiān)控系統(tǒng)的實(shí)時(shí)性、可靠性有了很大的提高,進(jìn)一步促進(jìn)了工業(yè)監(jiān)控系統(tǒng)的智能化和
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