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ID:33110652
大小:10.49 MB
页数:55页
时间:2019-02-20
《基于太赫兹成像的pcb板过孔内壁质量检测技术的分析-(5683)》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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