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ID:33006502
大小:1.86 MB
页数:61页
时间:2019-02-19
《lxi触发盒程控软件设计与同步算法分析》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、ABSTRACTABSTRACTAsaresultoftherapiddevelopmentandpopularizationoftheEthernettechnologyinrecentyears,technologyofLXIbushasbeenwidelyusedtothetestandmeasurementapplications.Theadaptabilityofhigh-speedLANinterfaceandtheunifiedmodeloftriggerandthetimingcharacteristicsofIEEE1588,simpli
2、fytheintegrationofthetestsystemsandreducethecostfordesignandmaintenance,providebetteroptionsforthetestsystembuilders.LXIbushasbeensupportedbymostoftheequipmentmanufacturers,andwillgraduallyreplaceothertraditionaltestbustechnology,suchasGPIB,VXIandsoon.Thisthesisisbasedontheproject
3、of"LXIclassATriggerbox".TheLXItriggerboxconformstoLXIclassAstandard,whichcanbeaccessedthroughthenetwork,supportstheIEEE1588synchronizationprotocol,andsupportsthehardwarebustriggermode.TheLXItriggerboxalsomakesnon-LXIinstrumentscompatiblewithLXIinstrumentsviaTTLpulseoutput.TheLXItr
4、iggerboxhasthefunctionofcontrollinginstrumentswithRS-232interfaceremotely,whichenablesthetraditionalRS-232instrumentstobecontrolledthroughnetwork.InthisthesistheLXItriggerboxremotecontrolsoftwareisdesignedandimplemented.TheaccuracyofPTPsynchronizationisimprovedandmulti-devicesynch
5、ronizationisimplemented.Contributionsareasfollows:1.TheC/SsoftwareandB/Ssoftwareoftheremotecontrolfunctionaredesignedandimplemented.TheC/SsoftwareincludestheSCPIcommandsandinstrumentdrivers.TheB/SsoftwareincludesWebinterfacesandserverprograms.2.ALXIplatformbasedonLXItriggerboxandL
6、abWindows/CVIenvironmentisbuilt.3.Thefactorsthataffectsynchronizationeffectsareanalyzed.TheaccuracyofsynchronizationisimprovedbyusingPIcontrollertuningprograms.AschemeoftimestampmatchingbasedontheFIFOisproposedandtheaccuracyofmultipledevicesynchronizationoftheLXItriggerboxisimprov
7、ed.ThethesisincludesthetestoftheremotecontrolsoftwareandIEEE1588synchronizationaccuracy.Testresultsshowthatthefunctionofremotecontrollingsoftwareisimplemented.ThePTPsynchronizationaccuracyisimproved.TheIIABSTRACTmaximumdeviationis20nswhentheboxesareconnectedbyanetworkcabledirectly
8、.Themaximumdeviationis70nswhenthe
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