基于FPGA的頻率計的設計.pdf

1、河北科技大學碩士學位論文基于FPGA的頻率計的設計姓名：范亞斌申請學位級別：碩士專業(yè)：測試計量技術及儀器指導教師：王彥朋20090901Abstract==％；自=自====目___目======自=========E==自==目目E=========；I目j_==：=====目_目AbstractDevelopmentofEDAtechnologyhaschangedthetraditionalmethodofelecmcaldesi

2、gnExtensiveapplicationofprogrammablelogicdevicessuchasFPGAhasmadetlleelectricaldesignasconvenient2ussoftwareprogrammingTheprogressofelectricaldesigntechnologyalsochangedthetraditionaldesignmethodoffrequencymeterThecommon

3、measurementmethodoffrequencyiStoutilizethefrequencycharacteristicsofthecircuittomeasurefrequencyandalsotOadoptnumericalmethodofutilizingpulsecountingtOmeasurefrequencyWighthedevelopmentofdigitalcircuittechnologyavarietyo

4、fimprovedfrequencymeasurementmethodsareproducedbasedonpulsecountingmethodAndmeasurementaccuracymeasurementoftherapidresponseandotheraspectsaregreatlyimprovedThispaperanalyzesthedirectfrequencymeasurementmethodand也emeasur

5、ingprincipleofperiodicfrequencymeasurementmethod，whichshowsthereasonswhythesetWOmethodsproduceerrorof：1countsMultiperiodsynchronousfrequencvmeasurementmethodrealizedthesynchronizationofgatesignaloffrequencymeasurementand

6、themeasuredpulsesignal，eliminatingthemeasuredsignalerrorof=1countsThepaperanalyzesthemulti—periodsynchronousfrequencymeasurementprincipleindepthandindicatestheadvantagesanddisadvantagesofthesethreemeasurementmethodsandsu

7、itablemeasuringoccasionsbycalculmingthemeasurementerrorofthesethreemethodsAsthemeasurementaccuracyofmultiperiodsynchronousfrequencymeasurementmethodisindependentonthemeasuredsignalfrequency，whichISanequal。accquracymeasur

8、ementmethod，itisapplicabletOawiderangeoffrequencymeasurementTherefore，thispaperadoptsmultiperiodsynchronousfrequencvmeasurementmethodtOcarryoutthedesignoffrequencymeterandgivestheoverallprogramdesignInthespecificdesignre

9、alization，themeasuringfrequencycoremodulesotthefrequencymeterusesEDAdesigntechnologyoflarge—scaleprogrammablelogicdevicesbasedonFPGA，accordingtOtopdowndesignmethodThisdividesfrequencvmeasunngmoduleintoanumberofsub—module

10、sinaccordancewiththedifferentfunctions，usingVHDLprogramtOachievethefunctionofeachsub—module，andat1astadoptesthecomponentinstantiationstatementintop1eveldesigndocumentstoconneclthevariousmodulestogethertOformafrequencymea