基于小波分析的自動變光焊接護(hù)目鏡響應(yīng)時間測試研究.pdf

1、上海大學(xué)碩士學(xué)位論文基于小波分析的自動變光焊接護(hù)目鏡響應(yīng)時間測試研究姓名：王權(quán)申請學(xué)位級別：碩士專業(yè)：機(jī)械制造及其自動化指導(dǎo)教師：洪躍20090301上海大學(xué)碩士學(xué)位論文ABSTRACTDuringweldingprocess，theretroflexionandtransitionofautomaticweldingfiltercanbeimplementedautomaticallythroughignitionandextingu

2、ishmentofarc，whichcanenhanceweldingqualityandreduceinjurytoeyesResponsetimeisoneofthekeyparametersbecauseitCanmakeastrongimpactonweldingqualityandprotectpeople’SeyesdirectlySoitismeaningfultoestablishtestingsystemofrespo

3、nsetimeMeanwhileitCanpromotethepopularizationofvariableproductsThetestingsystemincludesfiveparts：lamphouse，samplechamberphotoelectrictransitionandsignalmagnification，signalprocessingandtemperaturecontr01Thelamp—housecomp

4、risestriggerandbackgroundilluminantsTriggerilluminantsimulatesarC，retroflexioncanbeimplementedwhentriggerilluminantirradiatesthephotosensitivepointofweldingfilterwhilebackgroundilluminantsimulatesdaylightSamplechamberisu

5、sedtoplaceweldingfilterWhentriggerilluminantirradiatesthephotosensitivepoint，LCDcircuitovertums，thephotosignalswitchestoelectricalsignalthroughphotoelectricaltransition，thenmagnifybyamplifiercircuitAtlastinputintocompute

6、rbydataacquisitioncardforcalculationandtreatmentThisdissertationhascompletedstructuredesignofsamplechamberItsatisfiestestingrequirementsandCansimulatetestingenvironmentItcompleteddesignandsimulationofamplifiercircuitTher

7、esultsshowamplificationeffectisgoodThisdissertationalsoexertedsoftwareLabViewandcompleteddesignofdataacquisitionmodule，datadisplaymodule，datastoragemoduleanddataprocessingmoduleBasedonwaveletprinciple，thisdissertationimp

8、lementednoiseeliminatingthroughmatlabsoftware，calculatedresponsetimethroughsignalsthathasbeeneliminatednoisealreadyandanalyzedtheresultsThissystemimplementsresponsetimedetectionofautomotiveweldingfilteranddisplaysresults