【正文】 ,543 car t im es, which r egistered r egist r ation 6, 905 car t im es, and tr ansfer r egist ration 3, 592 car t im es, and change r egist r ation 1033 car t im es, and m or t gage r egistr at ion 696 car t imes, and cancelat ion r egistr ation 187 car t im es, and int o business 980 car t im es, and Ar chives cor ections 81 pieces t im es, and issued t est qualif ied logo 25, 429 car t im es, and ot her vehicles business 3,640 car t imes。 本設(shè)計(jì)主要用 AT89C51 作為控制核心， 由霍爾傳感器、 LED 數(shù)碼顯像管 、HIN232CPE 電平轉(zhuǎn)換 、 及 RS232 構(gòu)成。 其優(yōu)點(diǎn)硬件 是 電路簡(jiǎn)單，軟件功能完善， 測(cè)量速度快、精度高、 控制系統(tǒng)可靠，性價(jià)比較高等特點(diǎn) 。 t o st rengt hen t he t raining super vision in lar ge and medium goods vehicle. A is established lar ge vehicles and sm al vehicles classif ication m anagement of m otor vehicle t est m ode, increased m edium van car, and anger ous goods t ransport car, and schol car t est pr oject 。 supervision Sur vey Section r elies on m otor vehicle det ection r em ot e issued t est qualif ied logo soft ware platf orm super vision m ot or vehicle t est, and i entif ication sit uation 7418l iangci, nvestigation m ot or vehicle except ion business 30 car t im es, his pards business war ni g 244 ar ticle, vehicles and driving people sound video r egulat or y screenshot s 1852 Zhang, checks m ot or vehicle ar chives 716 pieces t imes, and m edium bus, and m edium above t ruck, and Of hazar dous chem icals, vehicles and school buses and ot her key vehicle inspection r ecor d of 420. ( C) based on t heir own, and strict adher ence t o def ense, m ore cheating, f alse f alse f ugit ive suspects, r obery suspect vehicles and t he I nter crackdown. DM V f ul play t o t he fir st line of Defense positon contr ol, investigating cheating, f ake identif ication and r obber y suspect vehicles t hr ough oper ational wor k, and car ef uly examine t he document s and legal pr oof, check t raffic violat ions, t r af fic accidents, t he f ugit ive suspect suspect ed vehicles and t hef t han t o wor k, f urt her t ight car, dr iving m anagem ent business f orm alit ies r eview procedures. . Tr uck dr iver inf orm ation managem ent plat f orm. Mot or vehicles and t raff ic police depar tments, St at e t r ansport aut hor it y t o f ur ther clarif y t he Division of labour , im plem ent ation r esponsibilt y, st rengt hen our colabor at ion and m anagem ent t ogether , r einf orcing t he m anagem ent of drivers on which str ongly synt hetic war fare and inf orm ation war fare. 3 st rictly im plem ent ed. Fr om M ay 1 up, a is im plement ed plex r oad and bad weather driving exam, cur rently DM V is ur ged cont ract or s par ty in t reasures dr iving school incr eased sim ulation Highway, and cont inuous r gent det our s, and snow days, and wet sliding r oad, and bur st situation disposal, subj ects I I f ield t o dr iving exam project , is expected 1 序 言 近年來(lái)隨著計(jì)算機(jī)在社會(huì)領(lǐng)域的滲透， 在電子技術(shù)飛速發(fā)展的今天， 單片機(jī)的應(yīng)用正在不斷地走向深入。隨著人們生活水平的提高，社會(huì)經(jīng)濟(jì)的發(fā)展，人們開(kāi)始注重身體素質(zhì)的提高?？梢詫?duì)大范圍轉(zhuǎn)速進(jìn)行測(cè)量，測(cè)量的轉(zhuǎn)速精度高，還可以和 PC 機(jī)時(shí)時(shí)通信，實(shí)現(xiàn)對(duì)電機(jī)轉(zhuǎn)速的測(cè)量。 由 于本人水平有限，加之時(shí)間倉(cāng)促，論文中難免會(huì)有錯(cuò)誤和不足之外，不夠理想、許多方面還需要繼續(xù)完善和改進(jìn)。 t o expand the breadt h and dept h of t he port al system, inf ormation syst em of Ent er prise Management Assist ant role t o play。 t hr ee is st rictly m ot or vehicle identif ication m anagem ent , equipped wit h unif ied of identif ication equipm ent and t ool, using mobile ident if icat ion Term inal, and law enf orcem ent r ecor ds instr ument, echnol gy identif icat ion m eans. As t o 20XX years J une 20 st at ewide mot or vehicle keep volum e f or 567, 408 car , and last year ear lier t han gr owt h 75, 814 car, gr owt h 13. 36%。 組成及框圖： 本系統(tǒng)通信部分是單片機(jī)經(jīng)電平轉(zhuǎn)換 電路 HIN232CP 之后，通過(guò)串口 RS232 發(fā)送數(shù)據(jù)，由 PC 微機(jī)接收，微機(jī)部分用 Visual Basic 軟件編寫(xiě)的界面作為 PC 機(jī)部分與單片機(jī)進(jìn)行串口之間通信。 系統(tǒng)要求及主要內(nèi)容 將霍爾傳感器產(chǎn)生的脈沖信號(hào)輸出入到單片機(jī)的外部中斷 0 口，單片機(jī)工作在內(nèi)部定時(shí)器工作方式 0，對(duì)周期信號(hào)進(jìn)行內(nèi)部記數(shù)，調(diào)用計(jì)算公式算出轉(zhuǎn)速，調(diào)用顯示程序顯示在 LED上，同時(shí)通過(guò)串口向上位機(jī)發(fā)送轉(zhuǎn)速數(shù)據(jù)。 t o st rengt hen t he t raining super vision in lar ge and medium goods vehicle. A is established lar ge vehicles and sm al vehicles classif ication m anagement of m otor vehicle t est m ode, increased m edium van car, and anger ous goods t ransport car, and schol car t est pr oject 。 supervision Sur vey Section r elies on m otor vehicle det ection r em ot e issued t est qualif ied logo soft ware platf orm super vision m ot or vehicle t est, and i entif ication sit uation 7418l iangci, nvestigation m ot or vehicle except ion business 30 car t im es, his pards business war ni g 244 ar ticle, vehicles and driving people sound video r egulat or y screenshot s 1852 Zhang, checks m ot or vehicle ar chives 716 pieces t imes, and m edium bus, and m edium above t ruck, and Of hazar dous chem icals, vehicles and school buses and ot her key vehicle inspection r ecor d of 420. ( C) based on t heir own, and strict adher ence t o def ense, m ore cheating, f alse f alse f ugit ive suspects, r obery suspect vehicles and t he I nter crackdown. DM V f ul play t o t he fir st line of Defense positon contr ol, investigating cheating, f ake identif ication and r obber y suspect vehicles t hr ough oper ational wor k, and car ef uly examine t he document s and legal pr oof, check t raffic violat ions, t r af fic accidents, t he f ugit ive suspect suspect ed vehicles and t hef t han t o wor k, f urt her t ight car, dr iving m anagem ent business f orm alit ies r eview procedures. . Tr uck dr iver inf orm ation managem ent plat f orm. Mot or vehicles and t raff ic police depar tments, St at e t r ansport aut hor it y t o f ur ther clarif y t he Division of labour , im plem ent ation r esponsibilt y, st rengt hen our colabor at ion and m anagem ent t ogether , r einf orcing t he m anagem ent of drivers on which str ongly synt hetic war fare and inf orm ation war fare. 3 st rictly im plem ent ed. Fr om M ay 1 up, a is im plement ed plex r oad and bad weather driving exam, cur rently DM V is ur ged cont ract or s par ty in t reasur