液晶自動(dòng)變光焊接面罩電路的設(shè)計(jì)與實(shí)現(xiàn).pdf

1、南昌大學(xué)碩士學(xué)位論文液晶自動(dòng)變光焊接面罩電路的設(shè)計(jì)與實(shí)現(xiàn)姓名：陶凌申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電子與通信工程指導(dǎo)教師：孫麗華涂銀水20071201AbstractA8S了RAeTBecauseofthenonlinearoffiquidcrystalandthediscretenessofitsparameters，Theliquidcrystalautochangingshadeweldingnowstillhassomedrawback

2、swhichaffectsthequalityofproductseriously———?dú)鈒lcadjustoftheshadenumberisnotaccurate，thetimeforresponseisnotshortenoughandthetotaldevicedissipationistoohighAsaresultitisusefulforsolvingtheproblemsoftheweldingmasknowandsat

3、isfyingallthedemandoflaborprotectionintheweldingindustrybettertocarryouttheresearchanddevelopmentoftheHquidcrystalautochangingshadeweldingmaskAlsoithasimportantactualsignificanceandnoticeableecorlomicbenefitThisarticlefi

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5、rcuitinthisarticlefirst毽辯singlechipastheoofeofthecontrolcircuitByestablishingthedatabaseoftheparametersofliquidcrystalofdifferentbatch，wehavesolvedtheproblemsofthenonlinearofliquidandhardtoregulatetheadjustoftheshadenumb

6、erexactly。Thankstotheoriginalchangingshadecontrolcircuit，thetimeforresponse≤O2msAccordingtOtheregulationinuniversaltechnicalrequirementsforeyeandfaceprotectors)andequipmentforeyeandfaceprotectionduringweldingoperatious)i

7、nourCountrywetookpartinandfinishedthedesignoftheshellandthecircuitofthefaceguardTheshelloftheliquidcrystalauto—changingshadeweldingismadeofhighperformanceplasticwhichishighstrengthandwithoutleakinglightInadditionto，byadd

8、ingfireretardantandotherspecialcomponents，ithasmeettothedemandofinflamingretardingandcouldbearthehighandlowtemperatureForresistancetoimpact，besidesofchoosinglightweightandhighstrengthmaterial，wealsoconsidermoreintheaspec