電子密碼鎖產(chǎn)品總體設(shè)計（模板）

電子密碼鎖產(chǎn)品總體設(shè)計【摘要】電子密碼鎖是集計算機技術(shù)、電子技術(shù)、數(shù)字密碼技術(shù)為一體的機電一體化高科技產(chǎn)品，具有安全性高，使用方便等優(yōu)點。本論文從電子密碼鎖系統(tǒng)的功能，硬件電路設(shè)計，軟件設(shè)計和PCB板制作四部分分別論述這一系統(tǒng)。電子密碼鎖系統(tǒng)包括電子鎖，電子鑰匙，用戶卡及用戶卡生成器四部分。一把電子鑰匙里能存儲32把鎖的開鎖密碼。每一把電子鎖里保存著當前開鎖密碼，以及用戶第一次使用用戶卡時的用戶卡號和加密位。用戶憑用戶卡在鎖上隨時更改開鎖密碼，更新或配制鑰匙里開鎖密碼。同一把電子鎖可配制多把鑰匙，而且一張用戶卡可在多把電鎖上使用。本系統(tǒng)考慮到電子密碼鎖成本及體積因素，在設(shè)計電子密碼鎖部分時，以P1C12C509A單片機為核心，AT24C02FlashRAM,HT7027電壓檢測芯片及專用驅(qū)動芯片等構(gòu)成外圍電路；電子鑰匙只有一片AT24C02和一片3.3V鈕扣電池，用戶卡里只有一片AT24co2。用戶卡生成器數(shù)量不多，而且不是面向用戶，所以設(shè)計時使用AT89c52單片機為核心，由多個數(shù)碼管，按鍵和發(fā)光二極管組成外圍電路。里面還內(nèi)置了AC220V交流電轉(zhuǎn)換為直流5v電路，使它能在市電下使用。系統(tǒng)軟件設(shè)計包含電子密碼鎖，用戶卡生成器兩部分程序。電子密碼鎖程序是用PIC匯編語言編寫。由于PIC單片機只有1K程序存儲空間，所以在設(shè)計程序時使用子程序復(fù)用技術(shù)。鎖的安全性方面采用了多道加密技術(shù)，包括開鎖密碼隨機生成，用戶卡號與加密位較驗。使用一種多次加密技術(shù)，使鎖能識別新配制用戶卡和舊用戶卡，并使I日用戶卡失效。在鑰匙里采用了一種數(shù)據(jù)結(jié)構(gòu)，使電子鎖能分辨出是修改開鎖密碼還是新寫入開鎖密碼。另外用戶在開鎖時操作方便，而且與開機械鎖的感覺并無區(qū)別。用戶卡生成器是用來生成用戶卡的，在設(shè)計操作界面時盡量人性化。主要的功能有按鍵輸入及識別，LED動態(tài)顯示，用戶卡號生成，用戶卡加密位生成，T2C讀寫操作等。在安全性方面也采取了多道加密過程，卡號和加密位均為多字節(jié)數(shù)據(jù)，增加破解的難度。在程序設(shè)計時使用C51語言，并用Keil軟件進行編譯和軟硬件仿真。硬件電路制作使用ProtelDXP設(shè)計制做PCB板。然后分別將電子鎖和用戶卡生成器焊接調(diào)試，進行性能和功能測試。本系統(tǒng)電子密碼鎖硬件部分結(jié)構(gòu)簡單、成本低，軟件部分使用電子加密提高鎖的安全性，具有比較好的市場前景?！娟P(guān)鍵詞】電子密碼鎖P1C12C509AAT89C52AT24C02ProtelDXP附件二InspirationsofJackKerouac[Abstract]ManythingshavebeensaidandwrittenabouttheAmericanwriterJackKerouac.Hehadbeenregardedastheinventorofavant-gardeAmericanwriting,areligiouszealot,acoiTupterofAmericanvalues,thiscentury'sShakespeare,andadrunkenrambler.Inmanywaysheisallthesethingsandnotanyofthem,whatwedoknowisthatnootherwriterinthemidnineteenthcenturyhadmoreinfluenceovertheshapingofpopularAmericanculture.ThisisnotwhatKerouacsetouttoaccomplish,butwhateventuallywastheoutcomeofhiswritings.Despitehisdeepprotestagainstthemovementsinculturethathiswritingstarted,hewillforeverberememberedasthefathertothisneweraofAmericanliterature.JackKerouacledalifeofimpulsivenessthatwasillustratedinthesponlaneouslanguageofhisliteraryworksandemulatedbytheBeatGeneration,agenerationofcounter-cultureyouththatsoughttochallengethestandardsofsocietyandeffectivelyleftanexampleforfutureactivistmovementsinAmerica.Throughouthisshortbutbrilliantlife,therearesomeveryimportantfactorsthatnotonlyshapedKerouac'sworksandwritingstyle,butalsolargelyinfluencedhischaracterandlife.Thosefactorsincludethefriendshipwithhispeerwriters,NealCassady,AllenGinsburg,WilliamBurroughs,andGarySnyder,tonamejustafew,eachofwhomeitherinspiredorencouragedhiminthecreatingofhisworksandtheformingofhiswritingstyle.Amongthem,thesinglebiggestinfluencewasNealCassady.Neal'slifeandpersonahaveadirectinfluenceonKerouac,swritingbygivingupmoretraditionalwritingstylesforafreeflowingspontaneousstylethatmadehimfamous.Kerouac'sfirstandalsothemostfamousnovelOntheRoadwhichinauguratedhiscareerasthespokesmanfortheBeatGenerationisessentiallyanautobiographicalaccountofKerouac'srecklesswanderingjourneysacrossAmericawithNeaLCassadyinthelate1940s.JackKerouacwasalsoawriterwithspiritualpreoccupations.Heallowedreligiontobewhatitis,anintegralpartofeverythinghedid,includingwriting.Buddhism,theAsianreligionKerouachasbelieved,isanotherfactorlargelyinfluencedhislife.AsaBuddhist,Jacksawlifeasamiraclethatcouldbeunderstood.Kerouac'sproseprovesitselftobeaverygoodexampleofhiswritingsasspiritualcommentary.Kerouac,whilewanderingthecountryinfreightcarsandthebacksofpick-uptrucks,sawhimselfasamoderndaysageorbodhisatva,discoveringtheessenceof"thevoid"andusinghisliteratureasarecordofthesediscoveries.HisworksareawonderfulexampleofintegratingBuddhismintothedailylifeandthoughtofamanlivinginawesternculture,itisespeciallyshownintwoofhispoems:"DesolationBlues"and"TheMexicoCityBlues”.Kerouachadalifelongloveofjazz,andjazzmusicplayedanessentialroleintheformingofKerouac'suniquespontaneouswritingstyle.TheinfluenceofJazzfounditswayintoKerouac'sprose,hispoetryandhismethodofthinking.Kerouacrelyforhisinspirationuponthismostbasicandgreatestexpressionofallartisticendeavor-music-andfoundthereakernelofsomethingofwhichhecouldmakeuse.Andhemadeabridgebetweenmusicandprose/poetry.Butthroughouthislife,JackKerouachasbeenanalcoholicandhealsotookalotofdrugs,alcoholanddrughavetogetherdeeplyaffectedhispersonalityandalsoplayedanimportantroleinthecreatingofhisworks.KerouacopenlyadmittedhewrotewhilehighonBenzedrine,marijuanaoralcohol.ForKerouac,literalintoxicationprovidedboththephysicalrushthatpropelledhimthroughhislongwritingsessionsandthefreedomfromhiscensoriousself.Butthisisalsowhatcausedthedeteriorationofhishealthandfinallyledtohisdeath.JackKerouac'sworksareundeniablyanintegralpartofAmericanliterature.InOntheRoad,Kerouacwrote,4tsomewherealongtheline[he]knew...thepearlwouldbehandedto[him]“Fictionalized,SalParadiseanticipatedthepearl,butinsteadKerouacpassesittotoday'saudience.Withexpect