电子专业基于单片机的自行车里程速度里程表的设计.docx
- 文档编号:16216553
- 上传时间:2023-07-11
- 格式:DOCX
- 页数:72
- 大小:607.69KB
电子专业基于单片机的自行车里程速度里程表的设计.docx
《电子专业基于单片机的自行车里程速度里程表的设计.docx》由会员分享,可在线阅读,更多相关《电子专业基于单片机的自行车里程速度里程表的设计.docx(72页珍藏版)》请在冰点文库上搜索。
电子专业基于单片机的自行车里程速度里程表的设计
无锡职业技术学院
毕业实践任务书
课题名称基于单片机的自行车里程/速度表设计
指导教师徐明职称工程师
指导教师黄从贵职称讲师
专业名称电子工艺与管理班级电子工艺20631
学生姓名宁翠萍学号21
课题需要完成的任务:
设计一个自行车里程/速度表,以单片机AT89C51为核心,实现实时测量并显示自行车行驶进程中的两项运动参数:
速度和里程。
课题的具体要求如下:
1、整体方案的设计及论证。
二、系统的大体结构及性能。
3、硬件电路设计,包括:
单片机系统电路、电源电路、测量电路、功能选择电路和显示电路等。
4、软件程序设计,包括:
主程序设计、中断服务子程序、显示控制子程序和采样子程序等。
五、功能选择后启动测量,单片机实时收集,处置后显示。
六、速度和里程值可单独显示,测量值误差小于1%。
超速行驶(设置限速参数)时,能自动发作声光报警。
7、毕业设计小结。
课题计划:
~现场实地调研,查阅相关资料,完成文献综述;
可行性方案分析。
构思初步方案。
~论述并肯定最佳设计方案;
学习硬件开发软件、单片机开发软件。
~设计硬件电路,编制软件程序,联机调试;
撰写毕业论文。
~完善毕业论文,并做答辩预备。
计划答辩时刻:
~
电子信息技术系系(部、分院)
2008年12月25日
英文翻译
“acartoon"technologyandapplication
cardtechnicalcharacteristic
alongwithmicroelectronictechnologyunceasingdevelopment,specially1μmfollowingmemorychipmanufacturecraftbreakthroughandmature,causestheentireICcardtechnologytopresentthemoreandmoreformidablevitality.
thestableread-writeperformance
Regardingthemagcard,thelinearitycard,thelightcard,itsinformationinthemediumdistributionistheplane.Therefore,whenbyread-writecardininformation,thecardmachinemagneticheadandthelighttelegramheadingallmusttherelativecardcarryonthereciprocalmotion.Satisfiesthistransmissionrequestthemechanismquitetobewithoutdoubtcomplex,thusincreasedthecardmachinefailurerategreatly.Moreover,becausethemagcard,thelinearitycardorthelightcardcarryonthedataaccessdirectly,butisneedsthroughthemagnetoelectricitytransformationorthephotoelectricitytransformation,transformsmagnetismsignalorthelightsignalthelogicallevelsignal.Thereforethesignaltransformationpartfurtherincreasedthecardmachineelectricitypartcomplexity.RegardingtheICcard,itsinformationcard,itsinformationstorageisbasedonthesemiconductorelectriccircuit.Theinformationmayunderstandthree-dimensionallyforinthemediumdistribution.Intheusethecardmachineandthecarddirectcontact,andmaintainsbothrelativelystatic,thusdoesnotneedthecomplexmechanicaldrivestructure.OntheotherhandtheICcardandbetweenthecardmachinecarriesonthelogicallevelwigwagdirectly,doesnotneedtheclearsignaltypetransformation.Thiscausesthecardmachinewhichthecardmachinemechanismandtheelectriccircuitcompositionrelativeothercardsplantisgreatlythesimplification,thisdirectlywillcausethemachinecosttodrop,themaintenancecostwillreduce,themachinesandtoolsusewillbestabledreliably.
datastoragestable
Generalmagcardsignalstoragetimeisapproximately1~2years,andneedstoduplicateunceasinglyrenovates,maintainsthedatanottobeabletodecay.Thecardread-writenumberoftimesalsoisrestrictedinseveralthousandnextbest,moreuseswillnotbeabletoguaranteethedatathestabilityandthereliability.UsesintheICcardthesemi-conductormemorybeingabletoguaranteethedatathemaintenancetimeabove10years,evencanachievefor100yearslongtime.Thisenablesthecardintoescapethenetinthesituationtouse,alsocanguaranteethedatatheauthenticityandthereliability.Simultaneouslyalsoreducedtheworrydatapossiblytochangeorthelosscarriesontherevolutionandthebackupwork.Ontheotherhand,theICcardmemorycellmayduplicatescratchesreadsinthenumberoftimestoreachgenerally10,000times,evenreachesabove100,000times.Notonlythisdirectlyincreasedthecardrepetitionuseability,moreoverreduceslikelythemagcardsuchmanytimestosendthecostofcapitalgreatlywhichthecardbrings.
largecapacitydatastorageability
Magcarddataabilityaregenerallymostonlythenmorethan300(lightcardalthoughreservesmaybeverybig,butbecauseisread-only,thusitsapplicationisrestricted).However,presentcommodityICcardstoragecapacity:
Thememorystick,mayreachthe4Mposition,thelogicalencryptioncard,mayreachthe16Mposition,butregardingbringstheCPUsmartcard,thestoragecapacitytoreachthe64Kbyte,alsomayaffirm,alongwiththeSemiconductorTechnologydevelopment,itscapacityalsowillbecomethepositiongrowtheveryyear.NotonlythisenablestheICcardtoapplyinthememorypicture,thefingerprint,thesoundwave,regardsthenetgrainandsoonsomeneedlargecapacityinformationinthebiologytrickrecognitionproject,butalsowas"cardmultipurpose"hasprovidedthebiggercapableofextension.
Manykindsofencryptiontechnology
measureinthemagcard,thebarcodecardorthelightcardinformationneedstocarryoncertaintransformationtobeabletodistinguish,buttheyforgeandthemaliciousinterpolationattacklacktheenoughresistanceenergyactuallyfacingtheduplication.RegardingtheICcard,mayusemanykindsofencryptiontechnologymeasure:
(1)hardwarelogicencryptionway:
Namelyusesthesemiconductorpasswordwhichcannotbereadtosave,enablesthepasswordcomparisonoperationonlyinthechipinteriortocompletevoluntarily.
(2)commonsoftwarelogicencryptionway:
NamelyusesthecharacteristiccharactermixcodeeitherusesCanadatoexaminetheglyphomancyverificationwithclearlymarkedpriceprocessingorusesthescrambledtextcodedirectly,allmayquiteconvenientlyenabletheinformationwhichinthecardsavestoachievethegoodencryptionperformance.(3)strictsoftwareencryptionway:
BringstheCPUintelligenceICcardthroughthechoice,intheusecardtheCPUoperationalcapabilityandthemonitorroutine,theinternationalgeneraleachkindofencryptionalgorithm(forexampleDES,RSAandsoon)willapplyincardencryptionprocessing,willenabletheICcardthesafetyperformancetoachievethequitehighlevel.
intellectualizedprocessingandtheresolutioncapability
Lightdiscussesisthemagcard,thelightcardorthebarcodecard,allisthenon-intelligentpassiveoperatingmode.ButintelligenceICcard,notonlycanonowninitiativesendouttheorderrequesttotheinterfaceequipment,thedistinctioninterfaceequipmentvalidity,aswellasdiscriminationinterfaceequipmentfunctionandjurisdiction,moreoverhasthevoluntarilyoperationandhandlingability.
eachkindofcompatible
functiontheICcarditselfsubstratecontourconformstotheinternationalstandardID-1size,alsotheKhakimaterialissameinthemagcard,therefore,attachesonthemagcardortheadditionalpaintingbarcodeontheICcardsubstrate,maysatisfythemagcardapplicationandthebarcodecardapplication.
goodcomprehensivecostbenefit
atpresent,theICcardaveragemonolithiccostisapproximatelymoreexpensivethanthemagcard3~5times.ButthecomprehensiveICcardsystemcomprehensivecostbenefit,notdifficulttoseeittohavethestrongcompetitiveability.
Insummary,ICcardthisnewbornproductcompareswithotherKhakiproduct,hastheunquestionabletechnicalsuperiority.Alongwiththetechnicaldevelopment,thiskindofsuperiorityfurtherwillalsodevelopandtheexpansion.ThereforeinthenextKhakiproductapplication,willsubstituteforothercardswiththeICcardtobecomethenextdevelopmentthemaincharacteristicandtheinevitabletrend.
cardsystemhardwarechoice
tooktheapplicationsystemthehardwareequipmentchoice,mustneedaswellastheimplementationmainbodyabilityaccordingtotheactualprojectconsidersitssystemhardwaredisposition.Thismainlyinvolves:
ICcardchoiceandconstructionofdatadesign;ICcardread-writemachinesandtoolschoiceanddesign;Systemdatatransmissionmodeandstructurechoiceandsoon..
2.1.1Cardchoice
CardchoicemainlychoosesbasedontheICcarduseenvironmentrequestandtheoperatingmoderequest.
ThebeltjointreceivesanelectricshocktheextremelycontactICcardandnon-contactstheelectrodethenon-contactICcardistwokindofmaincards
Regardingrequestfastthroughwithenvironmentbad(forexamplemulti-dust,rainwater,darknessandsoon)thesituation,maychoosethenon-contactICcardgenerally.Ifaltogethermaleautomobilecharge,highwaybridgecharge,automaticgeneralentranceguardcontrolandsoon.
Non-contactICcardeffectiverange;Readsthedatatobepossibletoreach1000mm.Writesthedatatobeawayfromisgenerally100~200mm.Comparedwithtypicalistheradiofrequencycards(RFCard).ItisonekindofpassiveICcard,itscontoursizeandthecontactICcardissame.
Itiscarriesonthecorrespondenceusingtheradiofrequencywayandtheinterfaceequipment.Itseffectiverangeandtheinterfaceequipmentreceive/transmitstheantennatoconcern.
Thebasiccorrespondingrelationsaretherangecoverageandtheantennaareaisproportional.
Non-contactICcardproductvarietynotverymany,Table1isseveralkindofnon-contactICcardsomeperformance.
Thenon-contactICcardaveragetransactiontimeisapproximately~.
2.1.2ICcarddatastorageandprocessingpatternchoice
CountingICcard:
ThemeritliesinthecardcosttobeoppositeinothertypeICcardsaysitspricetobelow,moreoverthiskindislowtothecardmachinerequest.Suitsinthedisposableexpense,butalsomayenhancescarditselfusingcardsurfacefineprintingandtheadvertisementspropagandathecollectionvalueandotheradditionalvalue,thusmayonestepreducetheICcardandthesystemcost,savestheinvestment.
Memorystickorlogicalencryptionmemorystick:
Issuitableorneedstheapplicationintheaccumulationdocumentsrecordingwhichwiderangeprintingrevises.Specially:
Thevarietyaremany,easytochoosetheperformancepricescaledheightofburstthecard,thecontroloperationissimple,islowtothecardmachinerequestandthedevelopmentsyste
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 电子 专业 基于 单片机 自行车 里程 速度 里程表 设计