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中英文翻译--智能化煤气表的设计.doc中英文翻译--智能化煤气表的设计.doc -- 5 元

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TheDesignOfIntelligentGasMeterGasmeterisagasflowmetertheyareincludedinthenationaldirectoryofstrongcompulsoryseizuretestmeasuringinstruments.Gasmeteringsystemhasbeendevelopingconstantly.Fromunenlightenedmechanicaltointelligentnowadays,madepeoplesliveshasbeenfacilitated.Inthepastforalongperiodoftime,weusemostofallmechanicalintheinternational,withthecontinuousadvancementofelectrontechnology,electrontypegasmeterhavealsoemergedinothercountry,butthereisstillalotofnonconvenience.Currentlymechanicalgasmetergiveagreatdealofinconveniencetomanagementandusers,thatis,issueofmeterreading.Wetakeoriginalbackwardartificialwaytolookuptablechargesgenerally.ThischargingmethodhasseveralmajordisadvantagesoccupyagreatdealofmanpowerManydrawbacksofartificiallyinefficientandcreatedagreatwasteofhuman,material,timetomanagedepartment.Therefore,researchanddevelopmentanewtypeofgasmeterchargingsystemisnecessary.Abroad,intelligentgasmeteringsystemisalsodeveloping,andtheyhaveautomaticbilling,aswellasalarmfunction,toprotectthebenefitsoftheGasCompanyandtheusers.InChina,GasMeterremainsatafairlylowlevel,mostoftheproductsjusttoplayaroleofswitching,andthedevelopmentofintelligenttablealsostagnatedataverylowlevel,althoughtherearealotofmanufacturerstoproducttheintelligentgasmeter.However,veryfewsophisticatedproductstheyimprovetheproductsonthebasisofforeigntechnologyaccordingtotheactualsituation,mostlytheuseofICcardtechnology.andmanufacturerscannotbesimultaneouslylargequantitiesofproducts.Intheviewtheactualsituation,wereferencetoalreadyexistproduct,accordingtotheideaofit,andtodesigntheintelligentgasmeter.thesystemoftheintelligenthaveapplicationofadvancedICcardbillingfunctions,useoftheremotecommunications,toconnectthecomputerwithalluserterminalsundercontrolbySinglechip,andhavethebestanticheatingfunction,preventusersfromstealinggas.Tomakethegasasacommodityafterfirstuse,theGasCompanycanbetoacceleratecashflow,eliminatethearrearsofthephenomenonofgaschargeshappened.Itcompletelyovercomesthemechanicaldisadvantageofthegasmeter,reducetheartificialfactorsimproveworkefficiencysavingthemanagerstime.Atthesametime,themeteringsystemalsotakesanumberofwaystoenhanceitspracticalityinusing,suchastransparencyofuserdata,userscanviewintuitivetheirownusageamount,aswellasthebalanceofthecard.Inordertoimprovethereliabilityofthesystem,thesystemalsosetupabrownoutprotection,whilethemeteringsystemalsoconsideringcanbeaddgasalarmfunction,thatis,whenthegasleakhappened,thesystemwillprovideuserswithalarmfunctions,toprovideuserswiththeuseofsafetysexual.Becauseofthesmartelectroncardprepaidgassystemsisbuildupofcomputerintelligentelectroniccardwriterandsalesdatabasesoftware.Ithavesetupusers,userchange,relocation,marketing,writingcards,statistics,searchfor,buythosestatisticsshouldbeimprisoned,finedreportfunctionsetc.Thesmartcardselectrongasdistributionsystemcanrealizethemodernizationofthegassalesmanagement,anduserconsumptionbecauseoftheamountofdatasuchasprepurchasethroughintelligentelectroniccardtotransmitautomaticallyrecorded,comparedwiththepreviousmanualentrynotonlyreducescostsbutalsoensureddataaccurateandreliable.Following,introduceoftheoveralldesignprogram.First,thecontrollerThedesignisbasedontheimplementationofsinglechipmicrocomputercontrolsystem,singlechipmicrocomputerusedAT89S51/52,itmanufacturebyATMELcompanyoftheUnited,itisthesinglechipofstateslowvoltage,highperformanceCOMS8bit.Chipcontaining8kbytesofrepeatedlyrewritablereadonlyprogrammemoryPEROMand256kbytesofrandomdatamemoryRAM,thedeviceusedATMELCorporationhighdensity,nonvolatilememorytechnology.Convenientcontrolandeasypower,easytoprogram,whilethepriceswererelativelycheaponmarket,andthereisassociatedcircuits,componentsarealsoabundantonthemarket,butalsoconducivetothepromotionofthesystem.Thechipalsohavefour8bitparallelI/OportP0P3,eachportcanbeusedasinput,canalsobeusedforoutputTherearetwo16bittimer/counterinternal,eachregularbrowser/countercanbesettocountthewaytocountontheoutside,alsocanbeconfiguredthewayfromtimetotimeandfromtimetotimeinaccordancewiththeresultsofcountingortheachievementofthecomputercontrolithavefiveinterruptsourceswithtwointerruptInterruptPriorityControlsystemandafullduplexUARTserialI/OportfortherealizationofsinglechipMCUandPCorbetweentheserialcommunicationbetween.thechipwiththeoscillatorandclockGenerationCircuit,butthequartzcrystalneedanexternalcapacitance,themaximumallowedfortheoscillationfrequency24MHz.AT89S52allsignalprocessingdigitalsignal,ahighantiinterferenceperformance.AT89S52supporttoISPProgramming.Controllerusing11.0592MHzcrystaloscillator,sothatmoreaccurateclock,thechipcanbeusedtoenterpowersavingprogramstateonthecircuit,thatis,whenusersturnoffthegasvalveafterthegasmeterdoesnotapply,theprocedurethatwouldallowthecircuittoenterpowersavingmode,savepowerconsumption.Second,billingThegasmeterbillingsystemisthroughnoncontactlesssmartcardreaderimplementation,andusingMCSRC500contactlesssmartcardreadersinglechipcommunication,programdesignisflexible,easytodevelop,andcommunicatewiththecomputer,managetheusersdatathroughthecomputersoftware.Theusermustbegotothegascompaniestopurchasegasbeforeusersgas,then,purchasethevolumeofgasintotheusercard,thencardswillbepurchasedthegasintothegasmeterinsidethehousethroughthecard,theelectromagneticvalvetobeopenbycontrolwithsinglechipmicrocomputer,theusercanbenormaluseit.Throughtheflowsensor,thesystemmeasuredthegasvolumehasbeenusedandautotominusthepurchasegas,whendepositgaslittleordepositgasrunout,theelectromagneticvalvewillbeclosedandthealarmcircuitwillbetoremindtheusertorenewatthesametime.Userswillonceagainpurchasedgasintothecard.ThecircuitthroughtheserialportwiththeMCSRC500communication,thereforethedesignofhardwarecircuitsaddsaMAX232circuit,implementdataexchangeofthesinglechipwiththesmartcards.Third,displaymoduleThesystemshowstheuseofLCDModule1602,LCD1602isacommon162lines,68characterdotmatrixLCDmodule.Itiswidelyusedinsmartintelligentinstrumentation,communications,officeautomationequipment,anditscharactergeneratorROMhavesometheirmediumownfiguresandlettersofthealphabet,somespecialsymbolslibraryofcharacters,wecanuse1602tosetupeight68dotmatrixfontcharacteristicsofcustom,itbeabletomeettherequirementsforuser,andLCDmodule1602suitablesize,easytoinstall,Inordertosaveenergy,theLCDmodule1602poweriscontrolledbysinglechipindesign,whenthesystemneedtodisplay,thepowerwillbesupply,otherwise,nopowersupply.RT1602Cusethestandard16pininterface,whichleftthisportfrom1footto16foot.No.1pinVSStopowergroundNo.2pinsupplyvoltageforlogicNo.3pinInputforadjustingtheLCDcontrast,andwhenthepoweristheweakestcontrast,thehighestcontrastratioofgroundpower,contrasttoohighwillleadtoghosting,whenusedbya10KpotentiometertoadjustthecontrastNo.4pinRStoregisterselect,Husuallyselectthedataregister,theselectionoflowlevelinstructionregister.No.5pinRWforreadwritesignalline,whenhightimereadoperation,whenlowlevelwriteoperation.WhentheRSandthelowcoRWcanbewrittenintothecommandordisplaytheaddress,whenRSishighforlowlevelRWcanbereadwhenthebusysignal,whenRSishighforlowlevelRWcanbewrittenintothedata.No.6pinItistheclocklatchsignalinput.No.7to14feetD0D7forthe8bitbidirectionaldataline.No.15to16feetfeetorBacklightairpower.Cathodebacklight15feet,16feetbacknegative.1602charactersLCDmodulewithinthememoryoccurredCGROMhavebeenstoredin160differentgraphicdotmatrixcharacters,thesecharactersareArabicnumerals,upperandlowercaseletters,commonlyusedsymbols,andJapanesekanaandsoon,eachcharacterafixedcode,suchastheuppercaselettersofthealphabetAcodeis01000001B41H,showthatwhenthemoduletoaddress41Hinthecharacterdotmatrixgraphicdisplay,wecanseethelettersA.Fourth,ProtectionfunctionThesystemcircuitalsohasabrownoutprotectionfunction,usingAT24C02memorychiptostorethenecessaryrealtimedata,whennoelectricpowerorincaseofunexpectedpoweroutagescanprotectthedata,whenthesystemisrestoredinaccordancewithAT24C02tostoredata,restorelostelectricitybeforethedatasystemtoensurethenormalbilling,toavoidthegascompanyandcustomerlosses.Theintelligentgasmeterinstallationeasy,theusercanquerythebalanceofcardorusageamountbythekeyinthecircuit.
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