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中英文外文翻译--基于单片机的汽车防盗报警系统设计.doc

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中英文外文翻译--基于单片机的汽车防盗报警系统设计.doc

BASEDONMONOLITHICINTEGRATEDCIRCUITAUTOMOBILESECURITYALARMSYSTEMDESIGNABSTRACTDECODESTHEAUTOMOBILESECURITYSYSTEMUSINGTHEMONLITCHISINTEGRATEDCIRCUITINTERIORRESOURCESREALIZATIONJUMPCODE,ITEACHTIMEUSESTHEREMOTECONTROLPASSWORDALLISCHANGING,BOTHENHANCEDTHESYSTEMSECURITY,ANDGREATLYREDUCEDTHECOSTKEYWORDMONOLITHICINTEGRATEDCIRCUIT,AUTOMOBILESECURITYSYSTEM,CODE/DECODEINTRODUCTIONISUNCEASINGLYPROGRESSIVEALONGWITHTHESOCIALECONOMYANDTHEHIGHTECHRAPIDDEVELOPMENT,INTHEROUTINEWORKANDTHELIFE,THEAUTOMOBILEHASBECOMETHEPEOPLEIDEALTRANSPORTATIONVEHICLEBUTTHEFOLLOWINGMOTORVEHICLETHECASEWHICHROBBEDGRADUALLYISALSOINCREASEDHASCREATEDTHEPILOTECONOMICALPROPERTYLOSSINORDERTOREDUCETHEAUTOMOBILETOROBTHEEVENTTHEFORMATIONRATE,FORHASTHEAUTOMOBILETHEUSERTOPROVIDETHESAFETYCONTROL,SIMPLYDEVELOPSONEKINDTOBERELIABLE,THEEASEOFOPERATION,CANSENDOUTINTHEDISCOVERYNORMALCONDITIONTOTHEPILOTREPORTSTOTHEPOLICETHEREMINDERANDTHESECURITYWARNINGSAFETYSYSTEMHASTHEPRACTICALSIGNIFICANCETHISARTICLEBASEDONTOTHEEXISTINGAUTOMOBILESECURITYALARMSYSTEMGENERALIZEDANALYSIS,DEVELOPSONEKINDOFBRANDNEWSECURITYALARMSYSTEMTHISSYSTEMHASMAINLYUSEDTHEJUMPCODECODE/DECODINGPRINCIPLE,CAUSESTHEOVERALLSYSTEMTOBESAFER,GREATLYREDUCESPASSWORDEXPLAININGRATE1SYSTEMPRINCIPLEOFWORKTHEAUTOMOBILESECURITYALARMSYSTEMTHEREMOTECONTROLWHICHCARRIESBYTHEDRIVERANDINSTALLSINTHEAUTOMOBILETHECONTROLLERTWOPARTSCOMPOSESTHEREMOTECONTROLANDTHECONTROLLERALLUSEEIGHTCMOSWHICHAMERICANATMELCORPORATIONPRODUCESTHEAVRMONOLITHICINTEGRATEDCIRCUIT,THISSERIESMONOLITHICINTEGRATEDCIRCUITBASEDONNEWSIMPLIFIESINSTRUCTIONRTHEISCSTRUCTURE,INCLUDESTHESERVICELIFEMOSTTOBEFEWIS1,000TIMEWRITES/SCRATCHESTHECIRCULATIONTHEFLASHPROGRAMMEMORY,ASWELLASTHESERVICELIFEATLEASTIS100,000TIMEWRITES/SCRATCHESTHECIRCULATIONETHEEPROMDATACARRIERSTORAGE,SOME2ONLYHAVEWHENTHEENTIREPIECECLEANINGCANCLEANTHEPROGRAMMINGENCRYPTIONLOCKSTHELOCALIZATION11SYSTEMDESIGNTHEAUTOMOBILESECURITYEXAMINATIONUSESTHEULTRASONICSENSORTHEULTRASONICSENSORISCOMPOSEDBYTHEULTRASONICWAVETRANSMISSIONCIRCUITANDTHESUPERSONICRECEPTIONELECTRICCIRCUIT,INTHEAUTOMOBILECABAPPROPRIATEPOSITION,INSTALLSTHEULTRASONICWAVELAUNCH/RECEIVER,ASWELLASSWITCHELECTRICCIRCUITT1WHENTHEAUTOMOBILEPARKSTHEVEHICLEOWNERPERSONMUSTLEAVETHEAUTOMOBILE,WITHREMOTECONTROLCLOSEDSWITCHT1,THEAUTOMOBILEALARMSYSTEMSATGARRISONSTHECONDITION,AROUNDTHESYSTEMUSEULTRASONICWAVEEXAMINATIONVEHICLEOBSTACLELAUNCHESTHEPARTIALELECTRICCIRCUITSLIKESCHART1TOSHOWWHENITSP1MOUTHP11,P12TOTHEDTRIG,THEP10CONTROLULTRASONICWAVELAUNCH,ARE0,THEPHOTOELECTRICITYCOUPLEROUTPUTSTHETP1ENDIS1,THEPERMISSIONULTRASONICWAVELAUNCH,LAUNCHES/THERECEIVEULTRASONICWAVEINTURN,THECIRCULATIONREPEATEDLYCARRIESONSIMULTANEOUSLYTHEMONOLITHICINTEGRATEDCIRCUITINTERIORCOUNTERSTARTSTOCOUNTTHESTEAMDISTANCEBETWEENVEHICLESOBSTACLEDISTANCEISTHETIMEWHICHSENDSOUTTHROUGHTHESOUNDNAVIGATIONANDRANGINGREFLECTSSPENDSDETERMINESANDCARRIESONTHECOMPUTATIONTHEREFLECTIONSIGNALCAUSESTHEDTRIGGERTOPRODUCEINTERRUPTREQUESTSIGNALINT1,SIMULTANEOUSLYSTOPSCOUNTING,READSTAKESCOUNTSTHEVALUE,CALCULATESTHEACTUALDISTANCEAFTERTHEFORMULA,THENCARRIESONTHECOMPARISONWITHTHEDATUMDISTANCE,IFEXAMINESWHENTHEACTUALDISTANCEISBIGGERTHANREFERENCEVALUE80CM,DOESNOTCARRYONTHEACCUSTOMOPTICSTOREPORTTOTHEPOLICE;IFSOMEPEOPLEAPPROACHTHEAUTOMOBILETOENTERTHECAB,THEEXAMINATIONACTUALDISTANCEISSMALLERTHANORWASEQUALTOWHENREFERENCEVALUE80CM,THROUGHMONOLITHICINTEGRATEDCIRCUITP22ANDTHEP23PORT,ACTUATESTHEINDICATINGLAMPDISPLAYCIRCUITANDTHESOUNDALARMCIRCUIT,SENDSOUTTHREETWOFLASHANDTRIGGERSAHIGHLEVEL,THEACTUATIONISWIRELESSSIGNALTRANSMISSIONCIRCUITCHART1ULTRASONICWAVETRANSMISSIONCIRCUIT12CODE/DECODINGPRINCIPLETHEPRESENTAUTOMOBILEREMOTECONTROLSECURITYSYSTEMAREMANYISUSESVD5026/27,PT2262/72,HT12E/DANDSOONTHEGENERALCODE/DECODESTHEELECTRICCIRCUIT,ITSPASSWORDDECIDEDBYTHECOMPONENTADDRESS,EACHSETOFSECURITYSYSTEMSUSEAFIXEDINVARIABLEPASSWORDALONGWITHTHEMICROPROCESSINGTECHNOLOGYDEVELOPMENT,THROUGHTHERECEIVEREMOTECONTROLTRANSMITTINGMESSAGE,MAYINTERCEPTTHISFIXEDPASSWORD,MOREOVERGENERALARRANGESTHEDECODINGADDRESSTOLOSETHEPERSONTOCARRYTHECOMPONENTSIZELIMIT,ITSQUANTITYISIMPOSSIBLETOOMUCH,CANOBTAINNOTREPEATEDLYCODESVERYISALSOLIMITED,ALSOCANVERYQUICKLYEXPLAINTHEPASSWORDWITHTHEAUTOMATICSCANNERTHEREFORE,THISKINDOFPASSWORDFIXEDINVARIABLEAUTOMOBILESECURITYSYSTEMHASRECEIVEDTHESERIOUSTHREATDECODESTHEAUTOMOBILESECURITYSYSTEMUSINGTHEMONOLITHICINTEGRATEDCIRCUITINTERIORRESOURCESREALIZATIONJUMPCODE,ITEACHTIMEUSESTHEREMOTECONTROLPASSWORDALLISCHANGING,WITHTHEPASSWORDNOLONGERDUPLICATESUSES,CAUSESTHEINTERCEPTIONPASSWORDALSOISMAKESAFUTILEEFFORT,INADDITION,ITMAYINCREASETHEENOUGHMANYPASSWORDSFIGURE,ENHANCESTHESYSTEMRESISTANCEILLEGALSCANNINGTHEABILITYTHEREMOTECONTROLCODINGALTOGETHERHAS12BYTES,SEPARATELYBY3BYTESCODESCHANNELSCODE,3BYTESCODESFOREWORDSNUMBER,5BYTESJUMPSCODES,1BYTEPRESSEDKEYOPERATIONCODEISCOMPOSEDENCODEDFRONTADDSONLOGICINEACHBYTE0TOTAKETHEOUTSETPOSITION,ENCODEDBEHINDADDSONALOGICAL1ACHIEVEMENTINEACHBYTETOSTOPTHEPOSITION,ANDINMOSTFRONTADDSONSEVERALLOGIC1TOTAKETHEGUIDANCESIGNAL,THISCONSTITUTEDTHESERIALCODEDSIGNALWHICHUSESINTOTRANSMITTHECODECHANNELCODEUSESINTOEXPRESSTHEREMOTECONTROLSTATUS;EACHSETOFSYSTEMSUSEAFIXEDCHANNELCODETHECODEFOREWORDNUMBERUSESINTORECORDTHEENCODEDORDER,ITSSTARTINGVALUEIS0,THEMONOLITHICINTEGRATEDCIRCUITEVERYTIMECODESATIME,THECODEFOREWORDNUMBERUPWARDLYCOUNTSTIMETHECODECHANNELCODEANDTHECODEFOREWORDNUMBERDEPOSITSINMONOLITHICINTEGRATEDCIRCUITEEPROM,GUARANTEESTHEMPOWERCUTTHEINFLUENCETHEJUMPCODEISTHESYSTEMATICTRUEPASSWORD,ITPASSESTHROUGHTHECOMPLEXSPECIALALGORITHMBYTHECODECHANNELCODEANDTHECODEFOREWORDNUMBERTOEXTRACT,THISSPECIALALGORITHMFOREIGNSECURITYTHEPRESSEDKEYOPERATIONCODEBYTHEPRESSEDKEYWHICHPRESSESWASDECIDED,WHENTHEHYPOTHESISTHEKEYISPRESSEDDOWN,ITSCODEDECIDESAS01H;WHENRELIEVESTHEKEYPRESSESDOWN,ITSCODEDECIDESAS00HWHETHERISTHEDECODINGCONFIRMSRECEIVETHECODELEGITIMATEASERIESOFOPERATINGPROCESSWASCONFIRMEDTHELEGITIMATECODENEEDSTOSATISFYTHREECONDITIONS;1CODESTHECHANNELCODEANDTHEDECODINGCHANNELCODEISSAME;2CODEDTHEFOREWORDNUMBERTOBEBIGGERTHANTHEDECODINGFOREWORDNUMBERDECODINGFOREWORDNUMBERTORECORDONLEGITIMATELYHASUSEDCODEFOREWORDNUMBER,THISCONDITIONMIGHTGUARANTEEBEFOREHASUSEDCODEWASINVALID;3JUMPSTHECODETOBEEQUALTOREUSESTHESPECIALALGORITHMTOEXTRACTCHANGESTHECODEAFTERTHEMONOLITHICINTEGRATEDCIRCUITCONFIRMEDRECEIVESISTHELEGITIMATECODE,WRITESTHECODEFOREWORDNUMBERINTHEDECODINGFOREWORDNUMBER,ANDCOMPLETESCORRESPONDINGOPERATIONPROCESSINGACCORDINGTOTHEOPERATIONCODETHEDECODINGCHANNELCODEANDTHEDECODINGFOREWORDNUMBERALSODEPOSITSINMONOLITHICINTEGRATEDCIRCUITEEPROM,GUARDSAGAINSTBECAUSEOFPOWERCUTLOSES13SECURITYREPORTSTOTHEPOLICEREALIZATIONIFWILLHAVEROBBERCHENZHERUTHEROOM,STARTSTHEAUTOMOBILE,AFTERWRONGPASSWORD,THENTHEAUTOMOBILESTORAGEBATTERY12VVOLTAGE,THEIGNITIONELECTRICCURRENTWAYIGNITIONLOCK,THEIGNITIONOUTAGE,THEENGINEEXTINGUISHES,AGAINSTARTS,WILLDUPLICATETHEABOVEPROCESS,LIKETHIS,THEBANDITSANDTHIEVESALWAYSWILLNOTBEABLETOSTARTTHEAUTOMOBILE,WILLNOTBEABLETOACHIEVEITSANTICIPATEDGOALTHEALARMCIRCUITMAINLYISCOMPOSEDBYTHEINTEGRATEDBLOCKANDTHESPEAKERANDELECTRONICSWITCHINGSCRTRIODEORTHEMULTIPLEUNITTUBE,AREFORENHANCETHEELECTRICCIRCUITMEASUREWHICHTHEPOWERBUTOFTENUSES,ITHASCOMPOSEDACURRENTAMPLIFICATIONFACTORVERYBIGEQUIVALENTTRANSISTOR,TOTALENLARGEMENTFACTORFORTHESETWOENLARGEMENTFACTORPRODUCTSCRISTHEELECTRONICSWITCHINGWHICHCONSTITUTESBYTHESILICONCONTROLLEDRECTIFIER,THEELECTRICCAPACITYANDTHERESISTANCECONSTITUTIONNEGATIVEBOOSTERCONCURRENTLYFILTER,PROVIDES34VTOICTHEVOLTAGE,ICISTRACESDRAWSUPSOUNDREPORTSTOTHEPOLICETHEINTEGRATEDCIRCUIT,THEALARMAPPARATUSBYTHESCRCONTROL,ROBSTHEVEHICLETHIEFONCEAFTERTHEWRONGPASSWORD,THENTHESTORAGEBATTERYELECTRICCURRENTENTERSTHESECURITYSYSTEMBESIDESAGROUP,ANOTHERGROUPISSTARTEDINTHEENGINE,AFTERLEADSTHEENGINEWORK,NATURALCONTACTOUTPUTVOLTAGE,AFTERTHEDIFFERENTIATINGCIRCUIT,SILICONCONTROLLEDRECTIFIERSCRISTRIGGERED,ALSOPASSESTHROUGHTHERESISTANCETOFALLTHEPRESSURE,THEVOLTAGEADDSINTHEICPOWERSOURCEINPUTEND,ICOBTAINSTHEVOLTAGEOUTPUTALARM,ENLARGESAFTERTHEMULTIPLEUNITTUBE,DESTROYSMOVESTHESPEAKERTOSENDOUTRESOUNDINGLYREPORTSTOTHEPOLICETHESOUNDWHENSTATICSTATE,ENTIREELECTRICCIRCUITDOESNOTCONSUMETHEELECTRICITY2SOFTWAREDESIGNTHEALARMAPPARATUSSOFTWAREDESIGNMAINLYDIVIDESINTOMASTERROUTINEALARMAPPARATUSINITIALIZATION,KEYMODULATIONANDDECODING;ALARMAPPARATUSINTERRUPT

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