基于太赫兹成像的pcb板过孔内壁质量检测技术的分析-(5683)

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1、万方数据浙江工业大学硕士学位论文RESEARCHONQUALITYINSPECTIoNTECHNoLoGYFoRINNERWALLOFPCBVIAHoLEBASEDoNTERAHERTZIM陵GINGABSTRACTPrintedcirCuitboard口CB)，ttlemostcommonapplicationofelectroniccomponents，isabasiccomponentofelectronicdevices，Whichsupportsavarie哆ofelec廿Dniccomponentsfixi

2、nga11dassemblillgonit．PCBcor衄ibutestoachieVetllewiringandcollllection锄ongt11ecomponentsa11dmeettheelectricalcharacteriSticsrequirementSofsystem．Asfor廿1eoVeraHdesigna11dmallufacturingprocessofPCB，itsdrillingdiSpositionconcemsalargeportion．Nowadays，nationaIeconomy

3、柚delec仃onictechnolog)rdeVeloprapidly，aIldmedesi伊inga11dm明ufactu面玛processofPCBadv锄ceintosmaller印emlres，narro、Ⅳerlillespace，hi曲erdensit)randmultilayer，whichrequireahigherdemalldofthequal时ofPcBViasiIlspection．Todevelopaquali够inSpectionsystemforPCBViaswithhighaccura

4、cy，e伍ciencyands切bilityhasimportantpracticalsignincance．nispaper，aimjngatmedefectSoftIleexistingqualit)，inSpectiontechnologyforPCBVias，comesupwitllanewapproachformequalit)，inspectionofPCBViaSirulerwalI．Withtllecontinuousterahertzwavesast11edetectionlightsource，tI

5、lispaperjudgestIleiImerwallqualitybymeintensi哆ofterallertzimaging．Bynumericalsimulation，mepreliminaryfeasibilit)，oftheapproachisVerified．R-esearchworkdDneasf．oUows：1．ThispaperintroducedtheresearchstatusathomealldabroadoVerPCBViasinspectiontechnology，t11entlleaum

6、orresearchedonthecharacteristics，thegenerationanddetectionmethodsf．orterahenz．2．FocusonthePCBvias，mispaper蚰alyzed山emechaIlismoftemhenzwaVetransmi仕inginPCBvias．Theauthordiscussedtlletransmissioncharacteristicsinstalldardviasandtheareaswheremeinnerwallofviasarenaw

7、ed．Atlastmeprocessofusingt11efiniteelememmethodtosolveHelmholtzequationisdescribed．3．Basedont11eresearchoftheeXistingPCBViainspectionsystemandthecontinuousterahenzimagingsystem，thisp印erproposedthearchitectureofqualityinspectionsystemforinnerwallofPCBviaswhichisb

8、asedoncontinuousterahertzimagingtechnology．TheautIlor万方数据浙江工业大学硕士学位论文in仃oducedtllebasicprincipleoftllissystem．4．Usingttlefiniteelelllentsimulationso侍wareCOMSOLMultiph