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ID:28054057
大小:237.26 KB
页数:11页
时间:2018-12-07
《基于gprs远程监控系统数据终端的研究-外文翻译》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、夕卜文:Long-distancesupervisorysystemdataterminalresearchBasedonGPRS1introductionWiththedevelopmentofcomputertechnology,Internettechnologyisparticularlyextensiveandin-depthvariousaspectsofpeople’slives,makepeople’sliveshasundergoneaprofoundchange.Asindustrialareas,becauseofth
2、eneedtocontrolareas,monitoringofawiderangeofobjects,hencetheneedtospendalotofmanpower,materialandfinancialresourcesforequipmentmaintenance.Moreover,therearemanyadverseconditions,itisnoteasytostaytheoccasionalmomentofarrivalornotsomefielddatacollection.Iftheamountofwiringwo
3、rkitisnottheeconomy,isunreasonable.Thishashelpedwirelesscommunicationstechnologydevelopmentinthefieldofremotemonitoring.GPRS(GeneralPacketRadioService),astheexistingGSMnetworkevolutionofthetransitiontothethirdgenerationmobilecommunicationtechnologyfor(2.5G),withrapidaccess
4、,alwaysonline,sobytheflowmeterfeaturesRemotereal-timedatatransmissioninasuddenunmatchedadvantages.2GPRStechnologyGPRS(GeneralPacketRadioService)isbasedontheGSMmobilenetworksystems,theuseofpacketswitchingtechnology,compatiblewithGSM,andhigh-speeddatatransmissionnetworks,GPR
5、SintheGSMnetworktointroduceatraditionalthreenewcomponents:PCU(PacketControlUnit,acontrolunit).SGSN(ServingGPRSSupportNode.GPRSservicenodesupport)andGGSN(GatewayGPRSSupportNode.GatewayGPRSsupportnode)withthefollowingcharacteristics:Thehighutilizationrateofresourcestotheintr
6、oductionoftheGPRSpacketswitchingmodeoftransmission,OnlyuserssendorreceivedataonlyduringtheoccupationofresourcesThismeansthatmanyuserssharethesamewirelesscommunicationsandhighefficiency,therebyincreasingtheutilizationofresources.GSMcircuitswitcheddatatransmissionmethodsandm
7、odelsfortheentirelinkperiod,WhetheruserstransmitdataalonewilloccupyChannel.GPRSBillingusersbytheflowofdatacommunicationsfortheaccountingstandards.GPRSdatatransmissionspeedofhigh-speedtransmission57.6KB/s.thehighestattainable115-117.2kb/sfullymeetuserneeds.Accesstowaitforas
8、horttimeGPRSaccesstimeisshort,fastconnectivity,theaverage2s.Onlineuserswillprovidereal-ti
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