自動(dòng)焦度計(jì)的研制.pdf

1、浙江大學(xué)碩士學(xué)位論文自動(dòng)焦度計(jì)的研制姓名：周明昱申請學(xué)位級(jí)別：碩士專業(yè)：測試計(jì)量技術(shù)及儀器指導(dǎo)教師：嚴(yán)惠民20040301浙江大學(xué)碩士論文ABSTRACTFocimeteroneofthenecessaryinstrumentsforthespectaclemanufacturerisusedforthespecificationesoflenses，China，wheremanypeoplewearspectacles，focimet

2、ersareinhighdemandTheautomaticfocimeterisbotllfastandaccurateandiswidelyusedinthebigspectacleshopsForalongtime，theautomaticfocimeterhasbeenmainlyimportedandtherelateddocumentislimitedBasedonthepatentoftheforeignautomatic

3、focimeteranddocument，thisprojectstudiesindetailstheprincipleandrealizationoftheautomaticfocimeterTheautomaticfocimeterisusuallymadeupoftheopticalsystem，precisemechanicalsystem，photoelectricitydetectingdevices(CCDsensersa

4、lecommonlyused)，andelectricalcontrols，involvingtheopticaltechnology，mechanicaltechnologyelectricaltechnologyetcThebackground，implication，defnitionandclasificationofthefocimeterarediscussedfirst，andthenthesystemprincipleo

5、fthefocimeterandtheoveralplanareanalysedThedesignofthesoftwareandhardwareofthesystemisfollowedInthesectionofthehardwaredesign，theembeddedplatformconsistedofARMprocessorisusedinthisprojectAR／vlsystemstructureisacknowledge

6、dastheleadingembededRISCprocessingcore，whichhassuchadvantagesaslowpowerconsumptionandcost，andhighperformanceThecompany’SpartnersareworldwideSumsung’SARMICisusedinthisprojeetasthecontrollerandtheICcapabilityisfullymadeuse

7、ofrealizingLCDdisplayADsampling，SDRAMcontrol，etc111esystemI／OisextendedthroughthebusThedesignofthehardwareislowincostandpowerconsumption，andhighinoperatingspeedInthesoRwareI_tC／OS—IIoperatingsystemisused，whichissimple，fl

8、ee，etcRTOSsoftwareiseasytodesignandextendnlesystemusedintheprojectinvolvesthedesignofpersontOcomputerinterface，wherethestructureofwindowsisfollowed，SOthateachinterfacehastheidenticalstructure，whichisgoodfortheprogrammain

9、tenanceAprototypefocimeterismadeaccordingtothedesigndiscussedinthispaperSomestandardlenseshavebeenmeasuredwiththefocimeterandtheresultsareofasatisfactoryHowevertherearesomeroomstOimprove，whichareanalyzedintheendofthepape