畢業(yè)設(shè)計(jì)論文采用單片計(jì)設(shè)計(jì)頻率計(jì)系機(jī)電工程系專業(yè)姓名班級(jí)學(xué)號(hào)指導(dǎo)教師職稱講師設(shè)計(jì)時(shí)間2目錄A1A23A3A0A4A6A74A3A5A4A9A8A10A11A12A13A14A15A10521A16A17A18A19522A16A17A20A21623A16A17A22A236A3A24A4A25A26A27A28A15A10731A29A30A31A32A33A34A35A36A37A38A39732A34A35A36A16A17A37A40A41733A42A43A44833189S51A29A30A40A418332A45A46A47A48A49A508333AT89S51A38A39A51A52A5132934A53A34A54A551035A56A57A54A5510A58A59A60A61A62A63A36A64A65A66A67A68A69A70A38A39A5111361A61A62A63A36A64A6511362A67A68A69A70A38A39A5112A3A71A4A25A26A72A28A15A101341A73A34A74A62A75A76A38A391342A74A62A77A78A511343A78A79A63A3616A80A81A82261A83A20262A84A8526A86A87A88A8928A90A91A291A92A93A94A95A96A97A98A99A100A983摘要隨著電子信息產(chǎn)業(yè)的不斷發(fā)展，信號(hào)頻率的測(cè)量在科技研究和實(shí)際應(yīng)用中的作用日益重要。傳統(tǒng)的頻率計(jì)通常是用很多的邏輯電路和時(shí)序電路來實(shí)現(xiàn)的，這種電路一般運(yùn)行較慢，而且測(cè)量頻率的范圍較小?？紤]到上述問題，本論文設(shè)計(jì)一基于單片機(jī)設(shè)計(jì)頻率計(jì)。首先，我們把待測(cè)信號(hào)經(jīng)過放大整形，然后把信號(hào)送入單片機(jī)的定時(shí)計(jì)數(shù)器里進(jìn)行計(jì)數(shù)，獲的頻率值，最后把測(cè)得的頻率數(shù)值送入顯示電路里進(jìn)行顯示。本文從頻率計(jì)的原理出發(fā)，介紹了基于單片機(jī)的頻率計(jì)的設(shè)計(jì)方案，選擇了實(shí)現(xiàn)系統(tǒng)的各種電路元器件，并對(duì)硬件電路進(jìn)行了G1235G11507。關(guān)鍵字單片機(jī)G727頻率計(jì)G727測(cè)量4第一章引言頻率G1214器是數(shù)G4395電路中一G1022G1868G3423應(yīng)用，實(shí)際的硬件設(shè)計(jì)用到的器件較多，G13864機(jī)G8616較G3809G7446，而且G1262產(chǎn)G10995G8616較大的G5322G17843。隨著G3809G7446G2499G13546G12255邏輯器件的G5203G8879應(yīng)用，G4570G1363整G1022系統(tǒng)大大G12628G2282。G6564G20652整G1319G5627G14033，G4439是G11464G6521用G2325進(jìn)G2058數(shù)G4395來顯示G15999測(cè)信號(hào)頻率的一種測(cè)量G16025G13634。G4439不G1177G2499G1209測(cè)量G8503G5370G8886，方G8886，G989G16294G8886，G4586G14045G1926信號(hào)和G1866G1194G1867G7389G2620G7411的信號(hào)的頻率，而且G17836G2499G1209測(cè)量G1194們的G2620G7411。經(jīng)過G6925G16025，G2499G1209測(cè)量G14045G1926G4497G5242，G1582G6116數(shù)G4395G5347G14045G4497測(cè)量G1214G726G2499G1209測(cè)量電G4493G1582G6116數(shù)G4395電G4493測(cè)量G1214在電路中G3698G2164傳G5875器，G17836G2499G1209G1582G6116數(shù)G4395G14045G6627G1214，計(jì)G1227器G12573。G3252G8504數(shù)G4395頻率G1214在測(cè)量G10301理量方G19766的G5203G8879應(yīng)用。頻率計(jì)的設(shè)計(jì)原理實(shí)際上是測(cè)量單G1313時(shí)G19400G1881的G2620G7411數(shù)。這種方G8873G1825G2447了實(shí)測(cè)G1209G2081的G20056測(cè)，G2528時(shí)G14422G11477了G2022G2010頻率的時(shí)G19400，G1823G7393了原來G20652頻率G18331用測(cè)頻G8181G5347而G1314頻G8585G18331用測(cè)G2620G7411G8181G5347的測(cè)量方G8873G4396在G6454G6389G17907G5242慢的G13582G9869。通常G5785G1929G991計(jì)G12651G8611G12198G1881待測(cè)信號(hào)的G14045G1926G1022數(shù)，G8504時(shí)我們G12228G19404G19388時(shí)G19400G10381G12198。G19404G19388時(shí)G19400G1075G2499G1209大于G6122小于1G12198。G19404G19388時(shí)G19400G17246G19283，得到的頻率值G4613G17246G1946G11842，G1306G19404G19388時(shí)G19400G17246G19283G2029G8611測(cè)一G8437頻率的時(shí)G19400G19560G4613G17246G19283。G19404G19388時(shí)G19400G17246G11713，測(cè)得頻率值G2059G7044G6466G17246G5567，G1306測(cè)得的頻率G12946G5242G4613G2475G5445響。本論文的任務(wù)是設(shè)計(jì)一G1022基于單片機(jī)技術(shù)的數(shù)G4395頻率計(jì)。主要介紹了整形電路、控G2058電路和顯示電路的構(gòu)G6116原理，G1209及G1866測(cè)頻的基本方G8873。進(jìn)行了相應(yīng)的硬軟件設(shè)計(jì)。A101A102A103A104A105A106A107A108A109A1075第二章頻率計(jì)總體方案設(shè)計(jì)21方案比較方案一G726本方案主要G1209單片機(jī)G1038核心，利用單片機(jī)的計(jì)數(shù)定時(shí)功G14033來實(shí)現(xiàn)頻率的計(jì)數(shù)并且利用單片機(jī)的動(dòng)態(tài)掃描把測(cè)出的數(shù)G6466送到數(shù)G4395顯示電路顯示。G1866實(shí)原理框圖如21所示21A110A111A112A113A114A115A110A111A116A117A118A110A111A119A120A121A122A123A124A125A126A127A128A129A119A120A130A126A131A132A133A134A129A135A136A137A138A133A134A129A139A140A141A142A133A134A129A143A144A133A134A129A145A122A133A134A129A146A147A133A134A129A148A149A150A151A133A134A152A140A153A130A154A155A113A114A156A115A157A11522A158A15122A110A111A116A113A114A156A115A159A160A161A162A163A164A159A160A165A166A167A168A169AT89S51A133A134A122A123A150A151A133A134A170A171A172A173A163A164A148A149A150A151A124A146A147A124A143A144A133A134A145A122A124A131A132A133A134A139A140A141A142A133A134622方案論證方案一G726本方案主要G1209單片機(jī)G1038核心，G15999測(cè)信號(hào)先進(jìn)入信號(hào)放大電路進(jìn)行放大，再G15999送到G8886形整形電路整形，把G15999測(cè)得G8503G5370G8886G6122者G989G16294G8886G1038方G8886。利用單片機(jī)的計(jì)數(shù)器和定時(shí)器的功G14033對(duì)G15999測(cè)信號(hào)進(jìn)行計(jì)數(shù)。G13546寫相應(yīng)的G12255序G2499G1209G1363單片機(jī)自動(dòng)調(diào)G14422測(cè)量的量G12255，并把測(cè)出的頻率數(shù)G6466送到顯示電路顯示。方案二G726本方案G1363用大量的數(shù)G4395器件，G15999測(cè)量信號(hào)放大整形電路變G6116計(jì)數(shù)器所要求的G14045G1926信號(hào)，G1866頻率于G15999測(cè)信號(hào)的頻率相G2528。G2528時(shí)時(shí)基電路G6564供標(biāo)G1946時(shí)G19400基G1946信號(hào)，G1866G20652電平持續(xù)時(shí)G194001S，當(dāng)1S信號(hào)來到時(shí)，G19404G19388開通，G15999測(cè)G14045G1926信號(hào)通過G19404G19388，計(jì)數(shù)器開始計(jì)數(shù)，G11464到1S信號(hào)結(jié)束G19404G19388關(guān)閉，停止計(jì)數(shù)。若在G19404G19388時(shí)G194001SG1881計(jì)數(shù)器計(jì)得的G14045G1926G1022數(shù)G1038N，G2029G15999測(cè)信號(hào)頻率FXNHZ。邏輯控G2058電路的作用G7389兩G1022G726一是產(chǎn)G10995鎖G4396G14045G1926，是顯示器上的數(shù)G4395穩(wěn)定G727二是產(chǎn)G10995清零G14045G1926，G1363計(jì)數(shù)器G8611G8437測(cè)量從零開始計(jì)數(shù)。23方案選擇G8616較G1209上兩種方案G2499G1209知道，方案一得核心是單片機(jī)，G1363用的元器件少，原理電路G12628單，調(diào)試G12628單只要G6925變G12255序的設(shè)定值G2029G2499G1209實(shí)現(xiàn)不G2528頻率范圍的測(cè)試G14033自動(dòng)選擇測(cè)試的量G12255。與方案一相G8616較方案二G2029G1363用了大量的數(shù)G4395元器件，原理電路G3809G7446，硬件調(diào)試麻煩。如要測(cè)量G20652頻的信號(hào)G17836需要G2164上G2010頻電路，G1227格相對(duì)G20652了G9869?；谏鲜?，所G1209選擇了方案一。A174A175A176A177A178A179A180A181A182A1807第三章系統(tǒng)硬件設(shè)計(jì)31一般數(shù)字式頻率計(jì)的原理數(shù)G4395G5347頻率計(jì)是測(cè)量頻率最常用的G1214器之一，G1866基本設(shè)計(jì)原理是首先把待測(cè)信號(hào)通過放大整形，變G6116一G1022G14045G1926信號(hào)，然后通過控G2058電路控G2058計(jì)數(shù)器計(jì)數(shù)，最后送到譯碼顯示電路里進(jìn)行顯示，G1866基本構(gòu)G6116框圖如圖31所示待測(cè)信號(hào)A183A184A185A186A187A188A189A190A191A19232頻率計(jì)方案的概述本頻率計(jì)的設(shè)計(jì)G1209AT89S51單片機(jī)G1038核心，利用G4439G1881部的定時(shí)/計(jì)數(shù)器完G6116待測(cè)信號(hào)G2620G7411/頻率的測(cè)量，單片機(jī)AT89S51G1881部G1867G73892G102216G1313定時(shí)/計(jì)數(shù)器，定時(shí)/計(jì)數(shù)器的工作G2499G1209由G13546G12255來實(shí)現(xiàn)定時(shí)，計(jì)數(shù)和產(chǎn)G10995計(jì)數(shù)溢出時(shí)中斷要求的功G14033。在定時(shí)器工作方G5347G991，在G15999測(cè)時(shí)G19400G19400G19560G1881，G8611來一G1022機(jī)器G2620G7411，計(jì)數(shù)器自動(dòng)G21641，這樣G1209機(jī)器G2620G7411G1038基G1946G2499G1209用來測(cè)量時(shí)G19400G19400G19560。在計(jì)數(shù)器工作方G5347G991，G2164至外部引腳的待測(cè)信號(hào)發(fā)G10995從1到0的跳變計(jì)數(shù)器G21641，這樣在計(jì)數(shù)G19404G19388的控G2058G991G2499G1209用來測(cè)量待測(cè)信號(hào)的頻率。外部輸入在G8611G1022機(jī)器G2620G7411G15999G18331用一G8437，這樣查測(cè)一G8437從1到0的跳變至少需要2G1022機(jī)器G2620G7411，所G1209最大計(jì)數(shù)G17907率G1038時(shí)鐘頻率1/24。定時(shí)/計(jì)數(shù)器的工作G7389運(yùn)行控G2058G1313TR控G2058，當(dāng)TRG13634，定時(shí)/計(jì)數(shù)器開始計(jì)數(shù)G726當(dāng)TR清0，停止計(jì)數(shù)。本設(shè)計(jì)終合考慮了頻率測(cè)量G12946G5242和測(cè)量反應(yīng)時(shí)G19400的要求。例如打要求頻率測(cè)量結(jié)果G10383G1313G7389效數(shù)G4395，這時(shí)如果待測(cè)信號(hào)的頻率G10381HZ，G2029計(jì)數(shù)G19404G19388G4497G5242必須大A193A194A195A196A197A198A199A200A201A197A198A202A203A204A205A197A198A206A207A208A197A1988于1000S。G1038了兼顧頻率測(cè)量G12946G5242和測(cè)量反應(yīng)時(shí)G19400的要求，把測(cè)量工作G2010G1038兩種方G8873G726（1）當(dāng)待測(cè)信號(hào)的頻率100HZ時(shí)，定時(shí)/計(jì)數(shù)器構(gòu)G6116G1038計(jì)數(shù)器，G1209機(jī)器G2620G7411G1038基G1946，由軟件產(chǎn)G10995計(jì)數(shù)G19404G19388，計(jì)數(shù)G19404G19388G4497G52421S時(shí)，即G2499滿足頻率測(cè)量結(jié)果G10383G1313G7389效數(shù)G4395。（2）當(dāng)待測(cè)信號(hào)的頻率100HZ時(shí)，定時(shí)/計(jì)數(shù)器構(gòu)G6116G1038定時(shí)器，由頻率計(jì)的處理電路把待測(cè)信號(hào)變G6116方G8886，方G8886G4497G5242G12573于待測(cè)信號(hào)的G2620G7411。這時(shí)用方G8886G1582計(jì)數(shù)G19404G19388，當(dāng)待測(cè)信號(hào)的頻率100HZ，G2620G7411G103810MS，G1363用12HZ時(shí)鐘的最小計(jì)數(shù)值G103810000，完全滿足測(cè)量G12946G5242的要求。33單片機(jī)33189S51一般概述該AT89S51是一G1022G1314功耗，G20652G5627G14033CMOS8G1313微控G2058器，G2499在4KG4395G14422的系統(tǒng)G1881G13546G12255的閃G4396G4396儲(chǔ)器。該設(shè)備是G18331用ATMEL的G20652密G5242非易失G5627G4396儲(chǔ)器技術(shù)和符合工業(yè)標(biāo)G1946的80C51指令集合引腳。芯片上的FLASHG12255序G4396儲(chǔ)器課重G7044G13546G12255的系統(tǒng)G6122常規(guī)非易失G5627G1881G4396G13546G12255。通過結(jié)合通用8G1313中央處理器的系統(tǒng)G1881課G13546G12255閃G4396的單芯片，AT89S51是一G1022功G14033強(qiáng)大的微控G2058器G6564供了G20652G5242靈活的和G1867G7389G6116本效益的解決辦G8873，G2499在許多嵌入G5347控G2058中應(yīng)用。在AT89S51G6564供G1209G991標(biāo)G1946功G14033G7264KG4395G14422的FLASH閃G4396，128G4395G14422的RAM,32G1022I/O線，看G19388狗定時(shí)器，兩G1022數(shù)G6466指針，兩G102216G1313定時(shí)器/計(jì)數(shù)器，5G2533量?jī)蒅13435中斷結(jié)構(gòu)，全G2464工G1030行G12483G2487，片上G6403G14645器和時(shí)鐘電路。G8504外，AT89S51設(shè)計(jì)的G19757態(tài)邏輯G6817作到零頻率和G6915持兩種軟件G2499選電G8181G5347。G12366G19398G8181G5347停止的CPU，G2528時(shí)G1813許的RAM，定時(shí)器/計(jì)數(shù)器，G1030行G6521G2487和中斷系統(tǒng)G13499續(xù)運(yùn)作。在G6493電G8181G5347G1457G4396RAMG1881G4493，G2499停止G6403G14645器，停止G6403G14645器，停止所G7389G1866G1194芯片的功G14033，G11464到G991一G1022外部中斷G6122硬件G3809G1313。332引腳功G14033G16840G7138A209A210A211A212A213A214A215A216A217A2159VCCG726電G9316電G2399GNDG726G6521G3332G9869P0G2487G726P0G2487是一G134648G1313G9443G7509開路G3423G2464G2533I/OG2487，G1075即G3332G3348/數(shù)G6466G5647線G3809用G2487。作G1038輸出G2487用時(shí)，G8611G1313G14033G20549動(dòng)8G1022TTL邏輯G19388電路，對(duì)G12483G2487寫G256IG257G2499作G1038G20652G19471G6251輸入G12483用。在G16787問外部數(shù)G6466G4396儲(chǔ)器G6122G12255序G4396儲(chǔ)器時(shí)，這G13464G2487線G2010時(shí)G17728G6454G3332G3348（G13148G1313）和數(shù)G6466G5647線G3809用，在G16787問G7411G19400G9620活G1881部上G6301電G19471。在FLASHG13546G12255時(shí)，P0G2487G6521指令G4395G14422，而在G12255序效G20576時(shí)，要求外G6521上G6301電G19471。P1G2487G726P1是一G1022G5114G1881部上G6301電G19471的8G1313G2464G2533I/OG2487，P1的輸出G13543G1926G13435G2499G20549動(dòng)4G1022TTL邏輯G19388電路。對(duì)G12483G2487寫G256IG257，通過G1881部的上G6301電G19471把G12483G2487G6301到G20652電平，G8504時(shí)G2499作輸入G2487，作輸入G2487G1363用時(shí)，G3252G1038G1881部G4396在上G6301電G19471把G12483G2487G6301到G20652電平，G8504時(shí)G2499作輸入G2487。作輸入G2487G1363用時(shí)，G3252G1038G1881部G4396在上G6301電G19471，G7588G1022引腳G15999外部信號(hào)G6301G1314時(shí)G1262輸出一G1022電G8981。333AT89S51原理圖如圖32G3A218A219A220A221A222A223A224A225A226A227A228A229A230A2181034分頻電路本G8437設(shè)計(jì)G18331用的是G14045G1926定時(shí)測(cè)頻G8873，由于考慮到單片機(jī)的定時(shí)計(jì)數(shù)器得計(jì)數(shù)G14033G2159G7389G19492，G7092G8873對(duì)過G20652頻進(jìn)行測(cè)量，所G1209我們對(duì)待測(cè)信號(hào)進(jìn)行了G2010頻，這樣G14033G6564G20652測(cè)量頻率的范圍，G17836G14033相應(yīng)的G6564G20652頻率測(cè)量的G12946G5242。所G1209我們需要把待測(cè)信號(hào)進(jìn)行G2010頻。G1866原理圖如33G3G3G3G3G3G3G3G3G3G3G3A231A232A231A233A234A233A234A235A236A23735顯示電路我們測(cè)量的頻率最終要顯示出來G1855G8585LED數(shù)碼G12661顯示器由8G1022發(fā)G1821二G7509G12661G13464G6116。基中7G1022G19283G7477形的發(fā)G1821G12661G6502G2027G6116“日”G4395形，G2490一G1022G3290G9869形的發(fā)G1821G12661在數(shù)碼G12661顯示器的G2503G991G16294作G1038顯示小數(shù)G9869用，G4439G14033顯示各種數(shù)G4395及部G1233G14533文G4395G8609。LED數(shù)碼G12661顯示器G7389兩種形G5347G726一種是8G1022發(fā)G1821二G7509G12661的G19463G7509G18129G17842在一G17227的，G12228之G1038G1861G19463G7509LED數(shù)碼G12661顯示器G727G2490一種是8G1022發(fā)G1821二G7509G12661的G19464G7509G18129G17842在一G17227的，G12228之G1038G1861G19464G7509LED數(shù)碼G12661顯示器。如G991圖所示。G1861G19464和G1861G19463結(jié)構(gòu)的LED數(shù)碼G12661顯示器各G12520G2022G8585G2529和G4445G6502G1313G13634是相G2528的。當(dāng)二G7509G12661G4560通時(shí)，對(duì)應(yīng)的G12520G2022G8585發(fā)G1154，由發(fā)G1154的G12520G2022G8585G13464合而顯示的各種G4395符。8G1022G12520G2022G8585HGFEDCBA對(duì)應(yīng)于一G1022G4395G14422（8G1313）的D7、D6、D5、。D4、D3、D2、D1、D0，于是用8G1313二進(jìn)G2058碼G4613G14033G15932示G8454顯示G4395符的G4395形G1207碼。在單片機(jī)應(yīng)用系統(tǒng)中，數(shù)碼G12661顯示器顯示常用兩種辦G8873G726G19757態(tài)顯示和動(dòng)態(tài)掃描顯示。所G16871G19757態(tài)顯示，G4613是G8611一G1022數(shù)碼G12661顯示器G18129要G2356用單G10432的G1867G7389鎖G4396功G14033的I/OG6521G2487用于G12520G2022G8585G4395形G1207碼。這樣單片機(jī)只要把要顯示的G4395形G1207碼發(fā)送到G6521G2487A238A239A240A241A242A243A244A245A246A24411電路，G4613不用G12661G4439了，G11464到要顯示G7044的數(shù)G6466時(shí)，再發(fā)送G7044的G4395形碼，G3252G8504，G1363用這種辦G8873單片機(jī)中CPU的開G19156小,G14033供G13485單G10432鎖G4396的I/OG6521G2487電路很多。在單片機(jī)系統(tǒng)中動(dòng)態(tài)掃描顯示G6521G2487是單片機(jī)中應(yīng)用最G1038G5203G8879的一種顯示方G5347之一。G1866G6521G2487電路是把所G7389顯示器的8G1022G12520G2022G8585AHG2528G2529G12483G17842在一G17227，而G8611一G1022顯示器的G1856G1861G7509COM是各自G10432G12447G3332G2475I/O線控G2058。CPUG2533G4395G8585輸出G2487送出G4395形碼時(shí)，所G7389顯示器G6521G6922到相G2528的G4395形碼，G1306究G12467是G18039G1022顯示器G1154，G2029G2474決于COMG12483，而這一G12483是由I/O控G2058的，所G1209我們G4613G14033自行決定G1321時(shí)顯示G2750一G1313了。而所G16871動(dòng)態(tài)掃描G4613是指我們G18331用G2010時(shí)的辦G8873，G17730G8981控G2058各G1022顯示器的COMG12483，G1363各G1022顯示器G17730G8981G9869G1154。在G17730G8981G9869G1154掃描過G12255中，G8611G1313顯示器的G9869G1154時(shí)G19400是G7509G1038G11713G7254的（G134341MS），G1306由于G1166的G16282G16285G7254G11053現(xiàn)G16949及發(fā)G1821二G7509G12661的G1325G17757效應(yīng)，G4625G12661實(shí)際上各G1313顯示器并非G2528時(shí)G9869G1154，G1306只要掃描的G17907G5242足G3827G5567，G13485G1166的G2372G16949G4613是一G13464穩(wěn)定的顯示數(shù)G6466，不G1262G7389閃G9877G5875。G1866原理圖34G3A247A248A249A250A251A252A253A254A255A3636硬件設(shè)計(jì)簡(jiǎn)介和系統(tǒng)整體原理圖361硬件設(shè)計(jì)G12628介G18331用外G6521G6566G3848輸入G14045G1926信號(hào)，經(jīng)過1N4538B（1N4538B的穩(wěn)G2399值G10385V，穩(wěn)G2399G1457G6264，G19462止輸入電G2399過G20652G6451G1272電路）后經(jīng)過兩G1343574HC14傳輸G4570G14045G1926信號(hào)G17728G6454G1038方G8886信12號(hào)，輸入到4040的時(shí)鐘計(jì)數(shù)輸入G12483，4040對(duì)輸入的G14045G1926進(jìn)行計(jì)數(shù)G2010頻，G86114040G8611輸入4096G1022外出，Q12輸出一G1022G14045G1926。單片機(jī)的T1工作在計(jì)數(shù)G10378態(tài)，在單G1313時(shí)G19400G1881計(jì)數(shù)值G19512G1209單G1313時(shí)G19400即是G14045G1926的頻率，單片機(jī)所測(cè)量的頻率的范圍G1881是1100MHZ，G2010兩G7735測(cè)量，256K100MHZ,256KG1209G9911HZ。單片機(jī)測(cè)量后G4570測(cè)量結(jié)果G17728G6454G6116G1857G1313BCD碼，通過單片機(jī)的G1030行G2487發(fā)送到數(shù)碼G12661顯示，數(shù)碼G12661顯示電路G18331用74LS164G20549動(dòng)G1861G19464G7509數(shù)碼G12661，G18331用G19757態(tài)顯示。數(shù)G6466的傳送G18331用G1030行G12239動(dòng)方G5347，即單片機(jī)G4570G1857G1022顯示碼從G1314到G20652G17892G1313通過G1030行G2487G1209方G53470發(fā)送到數(shù)碼G12661顯示，數(shù)碼G12661的顯示G10386G1313，即顯示單G1313G10381HZ和1KHZ。通過兩G1022發(fā)G1821二G7509G12661G2010G2047指示，P10G20549動(dòng)顯示1HZ單G1313指示G9795，G1314電平G9869G1154G727P11G20549動(dòng)顯示1KHZ單G1313指示G9795，G1314電平G9869G1154。362系統(tǒng)整G1319原理圖G3G3G3G3G3G3G16826G16277G19480錄一G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3G3A1A0A2A3A4A5A6A7A8A613第四章系統(tǒng)軟件設(shè)計(jì)41測(cè)頻軟件實(shí)現(xiàn)原理測(cè)頻軟件的實(shí)現(xiàn)是基于電路系統(tǒng)來進(jìn)行設(shè)計(jì)的。本G8437設(shè)計(jì)G18331用的是G14045G1926定時(shí)測(cè)頻G8873，所G1209在軟件實(shí)現(xiàn)上基本G17993G10043系統(tǒng)的設(shè)計(jì)原理，進(jìn)行測(cè)頻。本G8437軟件設(shè)計(jì)G16833G16340G18331用G8731G13546G16833G16340，在電G14053上G13546譯通過后即G2499G991G17745到電路上的實(shí)際電路中，即G2499實(shí)現(xiàn)頻率的測(cè)量。42軟件流程圖14A9A10T0A11A12A13A14T1A15A16A17A181A14A19A20A12A13A13A21A22A23A24A25A2664MSA14A22A234A27A43A28A29A30A31A32A334A107A31A32A7320HA330A34A35A37A38A39A40A14P11A260A41A35A34A35A42A44A261KHZA45A4624A44A47A48A49A16A50A516A44BCDA52A53A54A55A52A56A57A58A5950H,51H,52H,53H,54H,55HA60A61A62A63A64A65A66A67A68A69P10A700A109A64A71A110A701HZA72A74A75A76A77A78A76A79A53T1A80A78A76A79A56A81A82256A83A8440H,41H,42HA80A85A86A87A58T0,T1,A88A89T0,T1,A9021HA91A920A87A58A93A94A95A96A92256A97A98A93A94A99A100100M256KHZ,A54A55A101A91A102A551HZA56P10A920A103A104A105A63A64000000A9021HA91A920A72A74A106A93A78A76A79A56A81A824A83A108A111A8440H,41H,42HA112A113A114A115A116A106A117A118A119A56P12A113A114A920A65A66A120A121A67A122A123A12421HA120A121A125A126A93A94A127A113A114A128A129256KP35A120A121A701A106A130A116A93A113A114A131A132A133A134A9121HA110A1201P35A113A114A92A135A136A137A138A139A140A141T0,T1A142A143A14424A91A145A146A147A76A148A149A92BCDA52A56A53A54A55A52A60A61A62A56A148A149A83A108A111A8450H,51H,52H,53H,54H,55HYNNYNYYNNYNYA150A143A101A151A152A87A75A153A154A7515A87A58A93A94A131A132A133A134A9121HA921A56A155A156T1,TR10A85A86A87A58R64A157A158T0A704A159A65A66A160A161A157A1580A7064A162A159A65A66A160A161R6A1631A83A113A114A920A56A920A164A165256A97A98A106A130A93A94A133A13420HA113A114A921A56A921A164A92256A97A98A93A94A95A96A700A1664A159A65A66A160A161A87A58A93A94A131A132A133A134A9121HA921A56A155A167T1A69TR10A168A169A157A158R780R7A1631A83A113A114A920A56A920A164A1654A98YNYNNYA170A171A172A126A173A174A61A62T0A175A176A177A178T0A175A176A177A1781643程序設(shè)計(jì)ORG0000HLJMPMAINORG000BHLJMPCT0ORG0030HMAINMOVTH0,06HMOVTL0,00H設(shè)G13634定時(shí)時(shí)G19400G103864MSMOVSP,60HMOVIE,82HMOVTL1，00HMOVTH1，00HMOVTMOD，51HG727T0定時(shí)，T1計(jì)數(shù)，G18129工作在方G5347一MOVR6，4G727SETB20HG727定時(shí)器工作方G5347標(biāo)G5547，20HG10381，測(cè)量時(shí)G19400G103864MS，G2554G2029G10384G12198CLR21HG727測(cè)量結(jié)束標(biāo)G5547，21HG10381G2029測(cè)量結(jié)束MOVR7，80MOV40H，00HMOV41H，00HMOV42H，00HCLRP10G727指示顯示單G1313G10381HZ，G1314電平G9869G1154發(fā)G1821二G7509G12661SETBP11G727只是顯示單G1313G10381KHZ，G1314電平G9869G1154發(fā)G1821二G7509G12661MOVSBUF，0C0HJNBTI，A179A180A181A182A183A184A185A186A187A18517MOVSBUF，0C0HJNBTI，MOVSBUF，0C0HJNBTI，MOVSBUF，0C0HJNBTI，MOVSBUF，0C0HJNBTI，MOVSBUF，0C0HJNBTI，F(xiàn)INDKEYSETBP12MOVC,P12JCFINDKEYCLR21HSTARTG726SETBP35G727MOVC，P35JNCSTARTG3G3G3SETBTR0SETBTR1JNB21H，CLRTR0MOVA,P2ANLA,0FHMOVB,AMOVA,TL118ANLA,0FHSWAPAORLA,BMOV40H,AMOVA,TL1ANLA,0F0HSWAPAMOVB,AMOVA,TH1ANLA,0FHSWAPAORLA,BMOV41H,AMOVA,TH1ANLA,0FHSWAPAMOV42H,AMOVA,42HJNZFINDDATAMOVA,41HJNZFINDDATAG3LJMPNEXTSTARTG3G3頻率G1314于256K，G6454G7735測(cè)量FINDDATAMOVR1,40HMOVR2,41HMOVR3,42HA179A180A181A182A183A184A185A186A187A18519LCALLBCDTREAT0MOVSBUF,50HJNBTI,MOVSUBF,51HJNBTI,G3G3G3G3G3G3MOVSBUF,52HJNBTI,MOVSUBF,53HJNBTI,MOVSBUF,54HJNBTI,MOVSUBF,55HJNBTI,CIRP10SETBP11LJMPKEYFINDNEXTSTARTSETBP35G727MOVC，P35JNCNEXTSTARTCLR20H設(shè)G136344G12198測(cè)量方G5347CLR21HSETBTR0G3G3G3MOVTH0,3CHMOVTL0,0B0HMOVR7,8020JNB21H,CLRTR0MOV40H,P0MOVA,P2ANLA,0FHMOV41H,AMOVA,TL1ANLA,0FHSWAPAORLA,41HMOV41H,AMOVA,TL1ANLA,0F0HSWAPAMOV42H,AMOVA,TH1ANLA,0FHSWAPAORLA,42HMOV42H,ACLRCRRCAXCHA,41HRRCAXCHA,42HA179A180A181A182A183A184A185A186A187A18521CLRCRRCAXCHA,41HRRCAG3G3G3XCHA,40HMOV41H,AMOVA,42HCLRCRRCAXCHA,41HRRCAXCHA,42HCLRCRRCAXCHA,41HRRCAG3G3XCHA,40HMOV41H,AMOVR1,40HMOVR2,41HMOVR3,42HLCALLBCDTREAT0MOVSBUF,50HJNBTI,MOVSUBF,51H22JNBTI,G3G3G3G3G3MOVSBUF,52HJNBTI,MOVSUBF,53HJNBTI,MOVSBUF,54HJNBTI,MOVSUBF,55HJNBTI,SETBP10CLRP11LJMPKEYFINDCT0JNB20H,NEXTCT0MOVTH0,06H64G8639G12198MOVTL0,00HDJNZR6,CT0RETIMOVR6,4SETB21HCLRTR1CT0RETIRETINEXTCT0MOVTH0,3CHMOVTL0,0B0H50G8639G12198定時(shí)DJNZR7,NEXTCT0RETSETB21HA179A180A181A182A183A184A185A186A187A18523MOVR7,80CLRTR1NEXTCT0RETRETITABDB0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90HBCDTREAT0PUSHACCG727G457024G1313二進(jìn)G2058數(shù)G17728G6454G1038BCD碼PUSHB7PUSHPSWG3G3G3G3G3G3MOV36,24MOVR7,0MOVR6,0MOVR5,0MOVR4,0LOOPCLRCMOVA,R1RLCAMOVR1,AMOVA,R2RLCAMOVA,R2MOVR3,ARLCAMOVR3,AMOVA,R4ADDCA,R424DAAMOVR4,AMOVA,R5ADDCA,R5DAAMOVR5,AMOVA,R6ADDCA,R6DAAMOVR6,AMOVA,R7ADDCA,R7DAAMOVR7,ADJNZ36H,LOOPMOVA,R4ANLA,0FHMOV50H,AMOVA,R4ANLA,0F0HSWAPAMOV51H,AMOVA,R5ANLA,0FHMOV52H,AA179A180A181A182A183A184A185A186A187A18525MOVA,R5ANLA,0F0HSWAPAMOV53H,AMOVA,R6ANLA,0FHMOV54H,AMOVA,R6ANLA,0F0HSWAPAMOV55H,APOPPSWPOPBPOPACCRETEND26結(jié)束語1結(jié)論基于單片機(jī)的頻率計(jì)的設(shè)計(jì)G9053及到計(jì)G12651機(jī)的硬軟件知G16794，通過對(duì)系統(tǒng)的設(shè)計(jì)和調(diào)試，本G8437設(shè)計(jì)主要完G6116了G1209G991工作G7261、G6564出基于單片機(jī)的數(shù)G4395頻率計(jì)設(shè)計(jì)的基本方案G7272、完G6116了整形電路、G2528步電路、G2010頻電路、主控G19388電路G12573相應(yīng)的硬件電路設(shè)計(jì)及G1235G11507G7273、G13546譯了數(shù)G4395G5347頻率計(jì)的控G2058G12255序、數(shù)碼G17728G2282G12255序、數(shù)G6466顯示G12255序G12573系統(tǒng)軟件G12255序G7274、對(duì)硬件電路進(jìn)行了G1235G11507，進(jìn)行了誤差G2010析。2致謝首先在這里G5875謝XX老師認(rèn)G11507的指G4560，本G8437設(shè)計(jì)的過G12255和結(jié)果G18129G13485了我很多G5875觸。初G8437拿到畢業(yè)設(shè)計(jì)的題目時(shí)，G11507的是對(duì)數(shù)G4395頻率計(jì)一G7092所知。在初G8437G16277到XX老師的時(shí)候，對(duì)頻率G17836不了解，怎么設(shè)計(jì)，幾乎沒G7389什么想G8873。在XX老師的指G4560和講解G991，對(duì)頻率計(jì)的介紹G7389了一定的了解。后來通過不斷的學(xué)習(xí)和查閱資料，終于清楚的知道了頻率計(jì)的基本G5785G1929和設(shè)計(jì)的方案G7389了一定的理解。通過對(duì)各種G5627G14033的G8616較和所學(xué)知G16794G