1, Qhov ua rau thiab kev tiv thaiv cov txheej txheem ntawm condensation
Lub cev mechanism ntawm condensation
Lub ntsiab ntawm condensation yog qhov tshwm sim ntawm dej vapor liquefying thaum txias. Thaum qhov kub thiab txias ntawm LCD yog qis dua qhov ntsuas kub ntawm cov huab cua nyob ib puag ncig, cov dej vapor hauv huab cua yuav condense rau hauv cov dej ua kua rau ntawm qhov chaw ntawm lub vijtsam. Piv txwv li, nyob rau hauv ib cheeb tsam nrog ib tug kub ntawm 25 degrees thiab ib tug txheeb ze humidity ntawm 80%, lub dew point kub yog hais txog 21 degrees. Yog tias qhov kub thiab txias ntawm LCD poob qis dua 21℃vim tias cov cuab yeej kaw lossis hloov pauv ib puag ncig tam sim, condensation yuav tshwm sim tam sim ntawd.
Kev lag luam rooj plaub: Lub chaw tsim khoom siv petrochemical ib zaug ua rau thaj tsam loj ntawm cov tshuaj ntsuam xyuas luv luv nyob rau hauv ib pawg ntawm cov cuab yeej sab nraum zoov thaum lub caij los nag vim tsis xav txog cov teeb meem condensation. Tom qab kev sim, nws tau pom tias qhov kub ntawm qhov screen ntawm lub vijtsam yog 3℃qis dua qhov ntsuas kub, thiab thaum cov av noo nce mus txog 95%, cov dej lwg taw tes kub thiab qhov ntsuas kub sib txawv tsuas yog 1.2 degree, ncaj qha ua rau cov dej ntws.
Kev Tiv Thaiv Technology System
(1) Kev tswj ib puag ncig
Kev tswj qhov kub thiab av noo: Cov pa hluav taws xob LCD yog qhov tsim nyog rau ib puag ncig nrog cov av noo ntawm 30% -90% thiab kub ntawm -15℃txog 55 degree; Qhov chaw cia khoom yog cov av noo ntawm 10% -90% thiab kub ntawm -20℃txog 60 degree. Thaum lub sijhawm pib dhau lawm, lub tshuab tiv thaiv yuav tsum tau qhib.
Daim ntawv thov Desiccant: Cov kws tshaj lij hluav taws xob desiccants (xws li cov khoom siv silicone) tau muab tso rau hauv lub vijtsam zaub, nrog lub peev xwm nqus dej txog li 30% ntawm nws tus kheej qhov hnyav, uas tuaj yeem ncua qhov tshwm sim ntawm condensation. Cov chaw tsim khoom siv kho mob tau txo qhov kev pheej hmoo ntawm condensation los ntawm 75% los ntawm embedded desiccant modules ntawm lub vaj huam sib luag tom qab ntawm lub vijtsam.
(2) Kev tsim kho kom zoo
Sealing tsim: Cov ntaub ntawv tshwj xeeb sealing (xws li epoxy resin encapsulation) yog siv los kaw cov npoo ntawm lub vijtsam kom tiv thaiv cov dej vapor nkag mus. Ib qho cuab yeej ua tub rog ua tiav qib IP67 tiv thaiv los ntawm peb - txheej txheej kaw, thiab tuaj yeem ua haujlwm tsis tu ncua rau 72 teev yam tsis muaj qhov sib xyaw ua ke hauv 95% av noo ib puag ncig.
Cua sov zaj duab xis thev naus laus zis: Sib koom ua ke pob tshab zaj duab xis ua cua sov rau ntawm lub vaj huam sib luag sab nraum qab ntawm lub vijtsam, thiab tuav lub vijtsam ntsuas kub 2-3℃siab dua qhov dej dew point kub los ntawm PID kub tswj algorithm. Ib lub ntsuas ntse ntse siv cov yeeb yaj kiab cua sov qis ntawm 0.1W / cm ², uas tsuas yog nce lub zog siv los ntawm 5%, tab sis txo qis qhov tsis ua haujlwm ntawm 90%.
(3) Cov qauv kev ua haujlwm
Kev siv hluav taws xob tsis tu ncua kom tsav cov dej noo: Cov khoom siv kaw lub sijhawm ntev yuav tsum tau siv rau 2 teev hauv ib lub lis piam kom siv cov cua sov uas tsim los ntawm lub vijtsam zaub kom evaporate sab hauv cov dej noo. Ib qho kev ntsuas kev tsheb ciav hlau tau txo qis cov khoom siv kho cov khoom siv los ntawm 12% mus rau 2% los ntawm txoj kev no.
Kev tu thiab tu: Siv daim ntaub microfiber dipped nyob rau hauv ib tug tshwj xeeb tu tus neeg saib xyuas (pH 6.5-7.5) los so saum npoo, tsis txhob ya raws infiltration. Nws yog txwv tsis pub siv cov kuab tshuaj organic xws li cawv, vim tias lawv tuaj yeem ua rau cov yeeb yaj kiab polarizing thiab ua rau cov zaub tsis zoo.
2, Kev phom sij ntawm hluav taws xob zoo li qub thiab kev tiv thaiv
Kev puas tsuaj ntawm hluav taws xob zoo li qub
Electrostatic paug (ESD) tuaj yeem ua rau LCDs puas tsuaj hauv ob hom:
Sudden tsis ua hauj lwm: Kev tawg ncaj qha ntawm tus tsav tsheb IC lossis TFT array, tshwm sim tam sim ntawd tsoo lossis lub vijtsam flickering, suav txog li 10%.
Muaj peev xwm tsis ua hauj lwm: ua rau hlau tsiv teb tsaws los yog rwb thaiv tsev puas tsuaj, ua rau lub neej luv luv los yog tsis sib xws, suav txog li 90%. Raws li kev txheeb cais los ntawm cov chaw tsim khoom siv hluav taws xob semiconductor, LCDs tsis muaj kev tiv thaiv muaj qhov nruab nrab ntawm lub neej tsuas yog 3 xyoos hauv ib puag ncig tsim khoom, thaum tiv thaiv LCDs tuaj yeem kav ntev dua 8 xyoo.
Kev Tiv Thaiv Technology Matrix
(1) Kev xaiv cov khoom siv
Cov txheej txheem txheej: Txau ITO (indium tin oxide) txheej txheej txheej txheej ntawm qhov chaw ntawm lub vijtsam kom tswj tau qhov chaw tiv thaiv nyob rau hauv thaj tsam ntawm 10 ⁶ -10 ⁹ Ω / sq, uas tuaj yeem tawm hluav taws xob zoo li qub. Lub davhlau ya nyob twg tuav tau nce ESD tiv taus hluav taws xob los ntawm 2kV mus rau 8kV los ntawm cov thev naus laus zis no.
Anti zoo li qub ntim: Siv ib qho kev sib xyaw ua ke ntawm cov khoom ua npuas dej (nto ua haujlwm<10 ⁴ Ω) and shielding bags (shielding effectiveness>40dB) rau kev ntim khoom, lub chaw tsim khoom siv logistics tau txo qhov kev puas tsuaj ntawm kev thauj mus los ntawm 5% mus rau 0.3% los ntawm cov tshuaj no.
(2) Grounding system
Qhov chaw ua haujlwm hauv av: Cov khoom tiv thaiv- zoo li qub workbench, pem teb, thiab cov cuab yeej yog grounded los ntawm 1M Ω resistor kom tawm hluav taws xob zoo li qub thiab tiv thaiv cov khoom siv luv luv. Ib lub tuam txhab hluav taws xob qee qhov txo qis ESD kev sib tsoo tus nqi ntawm cov kab ntau lawm los ntawm 82% los ntawm kev tsim cov txheej txheem hauv av.
Khoom siv hauv av: LCD hlau thav duab muaj kev ntseeg siab txuas nrog cov cuab yeej siv los ntawm lub caij nplooj ntoos hlav daim hlau, nrog rau kev tiv thaiv hauv av.<0.1 Ω. A certain medical device has improved the solution rate of touch screen drift problem to 99% by optimizing the grounding path.
(3) Cov txheej txheem tswj
Kev tswj cov av noo: Kev tswj cov av noo ntawm 40% -60% hauv qhov chaw tsim khoom tuaj yeem txo qhov tsim hluav taws xob zoo li qub. Ib lub tuam txhab vaj huam sib luag tau txo qis qhov hluav taws xob zoo li qub hauv kev cob qhia los ntawm 3kV rau 0.5kV los ntawm kev txhim kho ultrasonic humidifiers.
Ion cua neutralization: Nruab cov kiv cua ion hauv cov txheej txheem tseem ceeb los tsim cov ions zoo thiab tsis zoo thiab ua rau hluav taws xob zoo li qub. Ib qho SMT cov kab ntau lawm tau txo qhov cuam tshuam adsorption yuam kev ntawm 0.2% mus rau 0.01% los ntawm cov thev naus laus zis no.
(4) Cov qauv kev ua haujlwm
Kev tiv thaiv cov neeg ua haujlwm: Cov neeg ua haujlwm hnav cov khoom tiv thaiv- zoo li qub wristbands (kuj<1M Ω) and anti-static clothing (surface resistance<10 ΩΩ). A certain aerospace research institute has reduced the damage rate of electronic components by 95% through strict dress codes.
Cov khoom siv cais tawm: Siv cov khoom siv los tiv thaiv- cov tais zoo li qub los thauj cov ntxaij vab tshaus thiab zam kev sib cuag nrog cov khoom zoo li qub xws li plastics thiab hluavtaws fibers. Qee lub tuam txhab tsheb ntsuas hluav taws xob txo qis tus nqi ntawm lub vijtsam zaub los ntawm 3% mus rau 0.1% los ntawm kev hloov cov khoom ntim.
3, Kev lag luam zoo tshaj plaws kev coj ua
Cov khoom siv kho mob teb
Lub tuam txhab saib xyuas siab - kawg tau tsim muaj peb - theem kev tiv thaiv:
Cov txheej txheem tsim: Txais kev siv tshuab lamination tag nrho los tshem tawm cov huab cua txheej nruab nrab ntawm lub vijtsam zaub thiab lub vijtsam kov, txo cov hluav taws xob zoo li qub;
Cov txheej txheem ntau lawm: Siv ESD saib xyuas hauv cov plua plav-rhiav pub dawb los tso saib tiag- lub sijhawm hluav taws xob zoo li qub ntawm txhua qhov chaw ua haujlwm;
Kev siv txheej: Muab cov neeg siv nrog cov khoom siv tiv thaiv- cov khoom siv tu zoo li qub, suav nrog cov ntaub siv hluav taws xob thiab tus neeg saib xyuas nruab nrab.
Qhov kev daws teeb meem no ua rau cov khoom lag luam dhau qhov IEC 61000-4-2 tus qauv 8kV tiv tauj kev kuaj tawm, txo cov nqi kho lag luam kom qis dua 0.5%.
Industrial Control Field
Qee qhov chaw tsim khoom PLC tau tsim cov tshuaj tiv thaiv sib xyaw rau cov twj siv sab nraum zoov:
Kev tiv thaiv tus qauv: Lub vijtsam zaub txais GORE-TEX breathable zaj duab xis, uas sib npaug sab hauv thiab sab nraud cua siab thaum tsis muaj dej;
Kev tiv thaiv Circuit Court: Ntxiv TVS diode rau tus tsav tsheb IC, clamp voltage<15V;
Kev tiv thaiv software: Tsim cov hluav taws xob zoo li qub nrhiav kom pom cov algorithms uas cia li rov pib lub kaw lus thaum kuaj pom qhov txawv txav.
Qhov kev daws teeb meem no ua rau cov cuab yeej ua haujlwm ruaj khov hauv ib puag ncig ntawm -40℃txog 85℃thiab 95% av noo, thiab tau txais ntawv pov thawj ATEX tawg-pov thawj.
