基于单片机的智能小车毕业设计论文外文文献翻译.docx
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基于单片机的智能小车毕业设计论文外文文献翻译.docx
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基于单片机的智能小车毕业设计论文外文文献翻译
毕业设计(论文)外文文献翻译
系部
机电工程系
专业
车辆工程
学生姓名
学号
指导教师
职称
讲师
2013年2月
ElectricintelligentcarbasedonSCM
Throughresearchandtorealizeaphotoelectricsensorforsensitivecomponents,withAT89C51ascontrolcoreelectrictracingofintelligentcontrolcarbonylation-thecar,thesystemisalsoincludingdcmotor,L9110chipsandLM324comparatoretc.ThedesignUSESAT89C51asintelligentcarcorecontroller.
ThesystemtakesmicrocontrollerascontrolcoreandrealizationofelectricbeforeEnter,back,turnleftandrightturnfunction.ThroughtheAnglesensordetectiontheseesawAnglechange,useincrementalplalgorithmtocontroltheelectriccarforbalance,andusingphotoelectricsensordetectionblackline,maketheelectricityActuationvehicleinthecourseofdrivingkeeplinearmotionanddon’tskipfromatrium.
1.ProjectDesign
Lightbuyasensor,therealityoftheelectriccarismovingquicklydegrees,bit,buy,transportationlineshapewhenmeasuredquantityofrealcondition,andwillbemeasuredquantitynumberaccordingtopreachsenttomonolithicmachineintolineprocessing,butbuysinglechipmachineaccordingtothemeasuredbuyrootdifferentformsofseveralinspectionaccordingtorealnowtoelectricactuationvehiclewisdomcancontrolsystem.Thiskindofsquarecaserealnowtoelectricactuationvehicledynamicshapestateintotheshipmentdorealpossessioninsystem,controlsystemspiritalive,candepend,puredegreeishigh,canfullfootofeachitemofthestockingstobed.
(1)straightepidemiologicalspeedistasseledstraightepidemiologicalspeeddepartmentwithpulsewidthmodulationexperience.meanwhilegatherspeedisexperience.meanwhile,itsmainelectricalpulsewidthmodulationbyroadsystemtypevariablechangedevice,JanesaysPWMvariablechangedevice.AdjustablespeedbyinthedepartmentofPWMexperience.Meanwhileopenshutfrequencyrateishigh,onlyonelectricitybarnadoelectricitysenseoffilterwavecanbeusetogettomoveverysmallstraightpulseelectricflow,electricityflowbarnadoelectriccapacityeasilyeventantras,departmentoflowspeedoperationflatexperience.meanwhile,adjustablespeedstabilityvanissurroundedrelativelywide,canreach1000leftlight.ByonelectricalflowwaveshapethanV-Msystem.beinphasewithflattoallelectricalflowdynamicmachine,electricheatconsumptionandhairlossthanasmall.withthesamplebuyinopenshutfrequencyrateishigh,andifafastspeedelectricalmachineringshouldmatchclose,fastentasseledphasecanbetogetverywidefrequencyband,becauseofthefastspeedringshouldbegood,dynamicconfigurationsexualcanperturbationresistancecanforceispowerful.Accordingtotheroot,withmorethanensemblecloseandthissetofelectricalmachinecontrolprojectbytoleranceofthequantityandelectricalmachinespeedstraightflowofhair,theexhibitortoadopttheprojectwithasingleextremelyHtypecanbechangedintochangedeviceinversePWMlinespeed.
1.1photoelectricdetectionmoduledesign
Theintelligentcarwasstuckontheblacklinerunningonwhitepaper“road”,sothismoduledesignneedtodetectshopontheblackrubberbeltdrivearea,includingRunstraightalongthearcdistrictanddrivingdistricttwoarea.Becauseftheblackandwhitepapertolightreflectioncoefficientisdifferent,canaccordingtoreceivereflectedlight.
Thestrengthofthejudge“road”-theblackline.thispaperUSESissimpleandpracticaldetectionmethods,namelytheinfrareddetectionmethod.
Infrareddetectionmethod,Iuseinfraredrayindifferentcolorsofphysicalsurfacewithdifferentreflectionpropertiescharacteristics.InthecardrivingprocessContinuallytothegroundtolaunchtheinfrared,whentheinfraredmetwhitegroundoccurswhenthereflectedlight,aimlessandlaunchpackedonthecarofreceivingtubereceiving;ifFruitismetblacklineisabsorbed,andthantheinfraredcarsreceivingtubereceivinglessthansignal.
1.2signalcomparativemoduledesign
ThispartdesignUSESaLM324comparator,ofsensorsignalvoltagereceivedcompareandamplified,andwillcomparetheresultsafterFeedtothemicrocontroller,usedtodetectsensorsensitivity,diagramshowninfigure5shows.Whentwosensorssimultaneouslydetectlight,straightforward.Whenthesensorcan’tdetectlight,incut-offstate,doubleLM324operationalamplifieroutputlowleveltomicrocontroller,byprogramprocessing,Ifleftnotdetectedlight,thenleftcorrectdirection;Iftherighthasnotbeendetectedlight,thenturncorrectdirection.
1.3motorcontrolanddrivingmoduledesign
Becauseuseisdoubledrivecars,thispartofthecircuitmustbeabletooutputoftwodifferentvoltagevalues,respectivelytocontrollingtrolleyrightandlefttwomotordrive,thetwoofthewheelspeedanddirectionofthesameordifferent,thustocontrolitsadvanceandturning.Insystemdesignprocess,usetwoL9110chipstoconnectSCManddcmotorrespectively.L9110isforcontrolanddrivemotordesigntwochannelspush-pullpoweramplifierapplication-specificintegratedcircuitdevice,discretecircuitsinmonolithicICintegratedsuchthattheperipheralequipmentsinlowercostandthewholemachinecancarryonsexualhigh.ThecoreslicetwoaTTL/CMOSandletelectricityflatloseinto,havegoodanti-jamming,twooutputterminalcanpickfloodingdynamicelectricmachinestraighttotheshipmentofpositivereversemoveandithashadabigelectricityflowfloodingdynamiccanforce,eachcallwaycanpassover800mAcontinuouscurrent,peakcurrentcapacityof1.5~OA;Atthesametimeithasloweroutputsaturationpressuredropandthestaticelectricity,Thebuilt-inclampadiodecanreleasetheperceptualloadofreversecurrentimpulse,makingitthedriverelays,dcmotors,steppingmotororswitchpowertubetheuseofsafeandreliable.
FollowtracingcarsystemtocommonAT89C51,complementary
withrelativelysimplecomponentsandcircuitdesign,thesmoothcompletionoffollowunderthepremiseoftracingfunction,andfullyconsideredappearance,costs,somostofthecircuitcarbymanualweldingiscomplete.Inthedesign,weneverinacircuitincreaseredundantfunctions,butretainedvarioushardwareinterfaceandsoftwaresubroutinesinterfacetofacilitatetheexpansionanddevelopmentafter.
2.Systemhardwaredesign
2.1motordrivermoduledesign
Inmakingintelligentcar,rightwheelrespectivelywithtwospeedandTorquebasicidenticaldcmotordrivendeceleration.bolt-ontrunk-lidspoilerDepartmenttoinstalladirectionwheel,thenthroughtheI/OmouthtocontroltowdcslowingdownMotorspeedandsteeringcanbeachievedonthecartotheleft,turnrightandstraightline.
MotordriveusingaintegratedelectricalmachinefloodingdynamiccoresliceL298N.L298NisSTtheproductionofthecompany,theinternalcontainingfourchannellogicaldrivecircuit,itisakindoftowphasefourphasemotordrive,namelythespecialcontainstowHbridgeofhighvoltagelargecurrentcommanderbridgetypedrive,acceptancecriteriaTTLlogiclevelsignals,bedriven46V,2Abelowthemotor.
2.2tracingmoduledesign
Tracingmodulemainlycomposedbyphotoelectricsensorreflex,Photoconductiveresistanceoftheresistanceofthelightwiththesurroundingenvironmentchanges,whentheLTTwhitelinesabove,lightemissionstrongly;TheLTTblacklineabove,lightemissionarerelativelyweak.Sowhenphotoconductiveresistanceinwhitelineandblacklineabovetheelementswilloccursignificantlychanges,theresistancechangesvalueaftercomparatorcanoutputhighlevel.Butthiswayenvironmentalinfluencesbig,workisnotstable.ThisarticleactualuseisRPP220typereflexsensorsmadetracingmodule.
RPR220isanintegrationofreflectivephotoelectricdetector,transmitterisagasinfraredlightemittingdiodeandthereceiverisahighsensitivitysiliconphotoelectrictriodeflat.Whenthelightemittingdiodereflectedback,triodeconductionandoutputlowlevel
2.3obstacleavoidancemoduledesign
Obstacleavoidancemodulemainlycomposedbyinfraredreflectionsensor.Infraredreflectionsensorbyoneinfraredtubesandphotoelectricdiodeconstitute,infraredtubesouttomeettheinfraredobjectreflectivesexstrongafterbeturnedback,byphotoelectricdiodereceiving,causephotoelectricdiodecurrentincreases,lightbornthischangeintovoltagesignal,itcouldbeprocessorreceivesandprocessing.
2.4remotecontrolmoduledesign
ThismodulewilllaunchendUSEShighsensitiveHL-5000typeuniversaltelevisionremotecontrol,thereceiverusingreceivefrequencyfor38kHreceivinghead1838,thismoduleandthesinglechipcomputerinterfaceisveryconvenient.Inaddition,fortheredoutsidemeetafterharvestofplaitcodeletternumberthedepartmenttasseledsetwhenshippedwithprojectofAT89C52singlechipmicrocomputerexternalinterruption.Inordertorecognizeacompletekeysignal,mustforeachcodingpulsewidthweremeasuredwithdiscriminatereceivesthepulseisostill1.themicrocontrollertimer/countertomeasuringpulsewidth.Timer/counterexceptpointsthancanbeset,fromexcept2toexcept2048,measurablepulsewidthcanreach500m/s.Thispapersetexceptpointfor12,namelythan12pointsfrequency,becausetheexternalclockisabout12MH,clockcyclefor1s,sothetimer/counterfor1pertimingonces.
2.5alarmmoduledesign
Alarmmodulecorechip110IC,canchooseapplicationinautomobile,motorcycle,alarms,personalriotdevice,doormagneticalarmdeviceandetc.
3.Systemsoftwaredesign
Thissystemsoftwaremodularstructure,hemainprogr
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