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PROCESSAUTOMATIONINSTRUMENTATIONVol131No16June2010(:GRAM09):2010-02-01,,1985,;IntelligentHouseholdFireAlarmandStealPrecautionSystem(,150040):,STC89C52GSM,,,::TP391:AAbstract:Atpresent,mostofthedomesticproductsofsecurityequipmentarenotreliableenough.Aimingatthisproblem,anintelligentfirealarmandstealprecautionsystembasedonSTC89C52singlechipcomputerandGSMshortmessagemoduleisintroduced.Thebasisoperationalprincipleandcircuitrycompositionaredescribedindetail.Thesystemprovidespromptshortmessageofalarmandcontrolshomeappliancesthroughshortmessageuponoccurrenceofdangeroussituation.Thesystemfeatureshighlyautomatic,strongadaptability,reliablecircuitryde2signanditisacceptabletomostofthefamilies.Keywords:MCUSMSmoduleMagneticdoorsensorIntelligentAnti2interference0,,,,,[1],STC89C52,,,,1,,,,,,,,,,,,11Fig.1Structureofthesystem22.1STC8SCT89C52RC51,51,,8kBFlash512BRAM,07,3162010680MHz,,STCSTC2ISP.exe,[2]2.2DallasDS13023lRAM,,31d,,2100,12h24h(),;8DIP[3]2.3SHT10SHTxx,,14A/D,SCKSHTxx,DATA2.4LCD12864,841616,,,,[4],2.5JB35GSM,,,RS2232,,,[5]JB35G,2.6,,,,,,,,,,,22Fig.2Monitoringcircuitoffirealarmandstealprecaution2.7,,ULN2003,[6]33Fig.3Relaycontrolcircuit2.8ISD4004CMOS,,(SPIMicrowire)[7],,,4.0kHz5.3kHz6.4kHz8.0kHz,,,,100(),10ISD40043.0V,17,PROCESSAUTOMATIONINSTRUMENTATIONVol131No16June2010,TPS76030,2.2F0.1F;,0.1F,344Fig.4Flowchartofthemainprogram:,,,,,4,,,,,,,,,Internet,,[1].AT89C52[J].,2008(13):100.[2],.[J].,2007(3):201.[3].DS1302[J].:,2004,17(2):30-31.[4].[D].:,2003.[5],.GSMTC35[J].,2004(9):32-35.[6],,.AT89C51[J].:,2008,28(1):142-143.[7].[D].:,2003.(69)DS18B20,,[1]NeromK,KanegaeY,ShortridgeKF.GenetianalysisofporcineH3N2virusesoriginatinginsouthenChina[J].JourralofGeneralVirology,1995,76:613-624.[2].[EB/OL].[2009-9-11].http:[3]DuboisL,VanoverscheldeC,ThomyV,etal.Temperaturecontrolbymicrowaveradiometrywithnarrowbandwidth[J].Eur.Phys.J.Appl.Phys.,2000(9):63-68.[4].DS18B20[J].:,2004,25(6):83-84.[5]Semiconductor.DS18B20programmableresolution12wiredigitalthermometer[R].DallasSemiconductorCorporation,2002.[6].[M].2.:,2007:123-129.[7],,.[J].,2008,29(10):64-66.[8],.DS18B20[J].,2005,18(4):10-12.[9],.STC[J].,2009,24(7):38-41.[10],.DS18B20[J].,2008,31(9):91-93.[11].DS18B20[J].,2007,24(9):1249-1252.27,