資源描述:
《基于gprs遠(yuǎn)程無(wú)線數(shù)據(jù)采集系統(tǒng)設(shè)計(jì)》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、摘要遠(yuǎn)程數(shù)據(jù)采集技術(shù)的出現(xiàn),是計(jì)算機(jī)網(wǎng)絡(luò)技術(shù)與通信信息技術(shù)相結(jié)合的必然結(jié)果。早期的遠(yuǎn)程數(shù)據(jù)采集技術(shù)是非在線、非實(shí)時(shí)的采集方式,而現(xiàn)代的遠(yuǎn)程采集技術(shù)則是實(shí)時(shí)的、在線的采集方式,借助于現(xiàn)代的計(jì)算機(jī)技術(shù)、互聯(lián)網(wǎng)技術(shù)和通信技術(shù),采集者可以依靠安裝在現(xiàn)場(chǎng)的各種各樣的傳感器設(shè)備,可以遠(yuǎn)隔千里就可以獲得現(xiàn)場(chǎng)的實(shí)時(shí)數(shù)據(jù),對(duì)現(xiàn)場(chǎng)的情況進(jìn)行監(jiān)督和分析。GPRS(GeneralPacketRadioservice)是基于移動(dòng)GSM網(wǎng)絡(luò)的一種新型的數(shù)據(jù)理技術(shù),它的出現(xiàn)為無(wú)線數(shù)據(jù)采集系統(tǒng)提供了一種高效的、全新的數(shù)據(jù)傳輸方式,可以提供跨地域、高速、大容量、高實(shí)時(shí)性
2、的數(shù)據(jù)傳輸業(yè)務(wù),改變過(guò)去采用有線傳輸方式傳輸距離近、數(shù)據(jù)傳送量小、實(shí)時(shí)性差等缺點(diǎn),大大地提高了數(shù)據(jù)采集的實(shí)時(shí)性和可靠性。本文中設(shè)計(jì)了一種基于GPRS的遠(yuǎn)程無(wú)線數(shù)據(jù)采集系統(tǒng)。該系統(tǒng)是以移動(dòng)公司的GPRS網(wǎng)絡(luò)作為遠(yuǎn)程數(shù)據(jù)的傳輸平臺(tái)。文中首先對(duì)GPRS網(wǎng)絡(luò)的體系結(jié)構(gòu)和工作原理作了詳細(xì)的介紹。其次,分別論述了本數(shù)據(jù)采集系統(tǒng)的硬件設(shè)計(jì)和軟件設(shè)計(jì)。硬件設(shè)計(jì)部分采用三星公司的ARM9s3C2440處理器,設(shè)計(jì)了相關(guān)的外圍電路,GPRS部分采用成都無(wú)線龍公司的GPRS模塊來(lái)作為無(wú)線網(wǎng)絡(luò)的數(shù)據(jù)接入平臺(tái)。軟件部分采用嵌入式Linux作為它的操作系統(tǒng),移植了
3、PPP協(xié)議作為數(shù)據(jù)鏈路層協(xié)議,并在此基礎(chǔ)上進(jìn)行驅(qū)動(dòng)程序和應(yīng)用軟件的開發(fā),編寫了用于數(shù)據(jù)通訊的軟件程序,實(shí)現(xiàn)了數(shù)據(jù)的遠(yuǎn)程采集和傳輸功能。目前這種技術(shù)被廣泛的應(yīng)用于無(wú)線數(shù)據(jù)采集領(lǐng)域、遠(yuǎn)程數(shù)據(jù)監(jiān)控領(lǐng)域等,相信隨著移動(dòng)通信技術(shù)的發(fā)展以及3G技術(shù)的實(shí)現(xiàn),移動(dòng)通信網(wǎng)的實(shí)時(shí)性和確定性都將得到極大的改善,本文所設(shè)計(jì)的基于ARM和GPRS網(wǎng)絡(luò)的數(shù)據(jù)采集系統(tǒng)必將會(huì)有著更為廣闊的發(fā)展空間。關(guān)鍵詞:嵌入式系統(tǒng),GPRS,ARM9s3C2440,LinuxAbstractRemotedataacquisitiontechnologies,isainevitabl
4、eresultwiththedevelopmentofcomputernetworktechnology,communicationandinI/Ormation.Intheearlytime,theremotedataacquisitionisnon-onlion,non-real-timemode.Nowdays,theremoteacquisitiontechnologyisreal-time,onlinemethod.Andwiththethedevelopmentofmoderncomputertechnology,Inter
5、nettechnologyandcommunicationstechnology,thecollectorscanobtainthereal-timedatafromtheremotesite,relyingonthevarietyofsensordevicesinstalledonthesite,socandosomemonitoringandanalysisaboutthesituationofthesitethroughthereal-timedata.GPRS(GeneralPacketRadioService)isanewda
6、taprocessingtechnology,basedonmobileGSMnetwork.Itprovideahighlyefficient,newdatatransmissionmodeI/Orthewirelessdataacquisitionsystem.Itcanprovidelong-distance,highspeed,largecapacity,highreal-timedatatransmissionservices,greatlyimprovingthereliabilityandaccuracyofthedata
7、.ThispaperhaspresentedawirelessRemoteDataacquisitionsystembasedonGPRS.InthissystemGPRSnetworkisamediumI/Ortransmittingtheremotedata.Firstly,itpresentsdetailedexplanationofGPRSnetwork’ssystemstrutureandcommunicationprinciple.Secondly,itintroducesthedesignofhardwwareandsof
8、twareintheembeddedsystem.TheprojetusesARM9embeddedprocessorandGPRSasthehardwareplatI/Orm.TheLinuxOperat