畢業(yè)設(shè)計基于單片機的數(shù)字萬用表設(shè)計畢業(yè)論文.doc

畢業(yè)設(shè)計（論文）題目：基于單片機的數(shù)字萬用表設(shè)計英文題目：THEDESIGNOFDIGITALMULTITESTERBASEDONMONOLITHICINTEGRATEDCIRCUIT學生姓名學號指導老師職稱專業(yè)摘要本次設(shè)計用單片機芯片AT89s52設(shè)計一個數(shù)字萬用表，能夠測量交、直流電壓值、直流電流、直流電阻以及電容，四位數(shù)碼顯示。此系統(tǒng)由分流電阻、分壓電阻、基準電阻、電容測試芯片電路、51單片機最小系統(tǒng)、顯示部分、報警部分、AD轉(zhuǎn)換和控制部分組成。為使系統(tǒng)更加穩(wěn)定，使系統(tǒng)整體精度得以保障，本電路使用了AD0809數(shù)據(jù)轉(zhuǎn)換芯片，單片機系統(tǒng)設(shè)計采用AT89S52單片機作為主控芯片，配以RC上電復位電路和11.0592MHZ震蕩電路，顯示芯片用TEC6122，驅(qū)動8位數(shù)碼管顯示。程序每執(zhí)行周期耗時縮到最短，這樣保證了系統(tǒng)的實時性。關(guān)鍵詞數(shù)字萬用表AT89S52單片機AD轉(zhuǎn)換與控制AbstractThisdesignisdesignadigitaluniversalmeterwithchipAT89s52ofone-chipcomputer,canmeasureandhandin,directcurrentpressingvalue,directcurrentflow,thedirectcurrentishindered,fournumbersshow.Thissystemisshuntedresistance,resistanceofpartialpressure,basicresistance,minimumsystemof51one-chipcomputers,shownthatsome,warningpart,ADchangeandcontrolmakinguppartly.Inordertomakethesystemmoresteady,makethewholeprecisionofthesystembeensured,thiscircuithasusedAD0809datatochangethechip,theone-chipcomputersystemisdesignedtoadoptAT89S52one-chipcomputerasthetopmanagementchip,theelectricityisrestoredtothethronethecircuitand11.0592MHZandshakenthecircuittomatchonRC,showthatthechipusesTEC6122,urge8numberstobeinchargeofshowing.Theeveryexecutioncycleconsumingtimeofprocedurecontractstogetshortest,inthiswaythereal-timecharacterofthesecuritysystem.Keyword:DigitaluniversalmeterAT89S52one-chipcomputerAD目錄摘要.iAbstract.ii緒論.41.數(shù)字萬用表設(shè)計背景.61.1數(shù)字萬用表的設(shè)計目的和意義.61.2數(shù)字萬用表的設(shè)計依據(jù).61.3數(shù)字萬用表設(shè)計重點解決的問題.62數(shù)字萬用表總體設(shè)計方案.62.1數(shù)字萬用表的基本原理.62.2數(shù)字萬用表的硬件系統(tǒng)設(shè)計總體框架圖.122.3硬件電路設(shè)計方案及選用芯片介紹.132.3.1設(shè)計方案.132.3.2芯片選擇及功能簡介.142.4數(shù)字萬用表的硬件設(shè)計.242.4.1分模塊詳述系統(tǒng)各部分的實現(xiàn)方法.242.4.2數(shù)字萬用表控制硬件整體結(jié)構(gòu)圖.292.4.3電路的工作過程描述.293.系統(tǒng)軟件與流程圖.303.1電路功能模塊.303.2系統(tǒng)總流程圖.303.3