Thaum xaiv sab hauv tsev thiab sab nraum zoov puv -xim LED cov ntxaij vab tshaus, nws yog ib qho tseem ceeb uas yuav tsum tau tsom mus rau qhov zoo ntawm LED cov khoom, cov lus qhia siv, hloov ceev faj, tswj cov khoom, thiab kev ceev faj txog kev ua haujlwm software. Cov ntsiab lus tshwj xeeb yog raws li hauv qab no:
I. LED Component Quality
LEDs yog cov khoom tseem ceeb ntawm tag nrho - xim LED zaub screen, thiab lawv qhov zoo thiab qhov tsis zoo txiav txim siab ntau dua 50% ntawm qhov screen zoo. Thaum xaiv, ua tib zoo mloog rau tsib yam hauv qab no:
Failure Rate: Tag nrho - xim zaub screen yog tsim los ntawm ntau cov xim liab, ntsuab, thiab xiav LED pixels. Qhov tsis ua hauj lwm ntawm ib qho xim LED yuav cuam tshuam rau tag nrho cov duab pom. Kev lag luam kev lag luam xav kom qhov ua tsis tiav ntawm LED zaub screen los ntawm kev sib dhos rau 72 teev ntawm kev laus ua ntej xa khoom yuav tsum tsis pub tshaj 0.03% (vim qhov kev txwv ntawm cov khoom siv LED).
Anti- Muaj peev xwm zoo li qub: LEDs yog cov khoom siv hluav taws xob semiconductor thiab rhiab rau hluav taws xob zoo li qub, yooj yim ua tsis tau vim electrostatic paug. Feem ntau, qhov tsis ua hauj lwm voltage ntawm LED nyob rau hauv tib neeg lub cev electrostatic paug hom kev xeem yuav tsum tsis txhob qis dua 2000V.
Attenuation Characteristics: Lub ci ci ntawm liab, ntsuab, thiab xiav LEDs yuav txo qis nrog lub sijhawm ua haujlwm. Tus nqi ntawm attenuation nyob ntawm LED nti, cov khoom siv, thiab cov txheej txheem ntim khoom. Feem ntau, tom qab 1000 teev ntawm 20mA chav ntsuas kub ntsuas teeb pom kev zoo, cov xim liab LED attenuation yuav tsum tsawg dua 10%, thiab xiav thiab ntsuab LEDs yuav tsum attenuation yuav tsum tsawg dua 15%. Qhov sib xws ntawm liab, ntsuab, thiab xiav LED attenuation cuam tshuam rau qhov dawb tshuav thiab tso saib kev ncaj ncees ntawm lub vijtsam.
Brightness: LED ci ntsa iab yog qhov tseem ceeb ntawm kev txiav txim siab ntawm lub vijtsam ci. Lub teeb ci siab dua tso cai rau cov npoo tam sim no ntau dua, uas yog qhov zoo dua rau kev txuag hluav taws xob thiab ruaj khov. LEDs muaj qhov sib txawv saib; rau qhov muab nti ci ci, lub kaum sab xis me me ua rau lub teeb ci dua, tab sis pom lub kaum ntse ntse. Feem ntau, 100-degree LEDs raug xaiv los ua kom pom lub kaum ntse ntse txaus. Rau cov ntxaij vab tshaus nrog txawv pixel pitches thiab saib nrug, qhov sib npaug yuav tsum pom ntawm qhov ci, saib lub kaum ntse ntse, thiab tus nqi.
Kev sib xyaw ua ke: Tag nrho - xim cov lus qhia yog suav tsis txheeb liab, ntsuab, thiab xiav LED pixels. Qhov ci ntsa iab thiab wavelength sib xws ntawm txhua xim LED txiav txim siab qhov screen qhov ci, qhov sib npaug dawb, thiab chromaticity sib xws. Cov chaw tsim khoom lag luam feem ntau xav kom cov neeg muab khoom lag luam muab cov LEDs nrog lub wavelength ntau ntawm 5nm thiab qhov ci piv ntawm 1: 1.3. Cov kev qhia tshwj xeeb no tuaj yeem ua tiav los ntawm kev muab qhab nia siv lub spectrophotometer. Voltage sib xws feem ntau tsis tas yuav tsum tau. Tsis tas li ntawd, qhov sib xws ntawm cov xim liab, ntsuab, thiab xiav LEDs cuam tshuam rau qhov sib npaug ntawm cov xim dawb thiab cov xim video ntawm ntau lub kaum ntse ntse. Kev tswj hwm nruj yog yuav tsum tau muaj nyob rau hauv lub lens tsim thiab xaiv cov khoom raw, tshwj xeeb tshaj yog rau nruab nrab - mus rau siab -kawg qhia.
II. Cov ntsiab lus tseem ceeb rau kev siv LED Txawm siab - LEDs zoo yuav tsum tau siv thiab ib puag ncig zoo. Thaum xaiv LEDs, xyuam xim rau yim lub ntsiab lus tseem ceeb hauv qab no:
Anti- zoo li qub: Cov nroj tsuag sib dhos yuav tsum muaj kev tiv thaiv kev tiv thaiv - zoo li qub, xws li kev tiv thaiv kev tiv thaiv - zoo li qub hauv av, tiv thaiv - zoo li qub flooring, anti- zoo li qub soldering irons, anti- zoo li qub mats, anti- cov dab teg zoo li qub, thiab cov khaub ncaws zoo li qub. Kev kuaj electrostatic tsis tu ncua yuav tsum tau ua.
Wave Soldering Temperature and Time: Wave soldering kub thiab reflow lub sij hawm yuav tsum nruj me ntsis tswj. Qhov ntsuas kub ntawm 100℃± 5℃yog pom zoo, nrog rau qhov siab tshaj plaws ntawm 120℃thiab qhov kub thiab txias nce. Qhov ntsuas kub yuav tsum yog 245℃± 5 degree, thiab lub sijhawm yuav tsum tsis pub tshaj 3 vib nas this. Tom qab reflow, zam kev co los yog cuam tshuam rau LEDs kom txog thaum lawv rov qab mus rau chav tsev kub. Wave soldering tshuab ntsuas kub tsis tu ncua yuav tsum tau kuaj xyuas tsis tu ncua los tiv thaiv overheating lossis kub hloov pauv los ntawm kev puas tsuaj rau LEDs.
Tsim tus nqi tam sim no: Lub nominal tam sim no ntawm LED yog 20mA. Nws raug pom zoo tias qhov siab tshaj plaws ua haujlwm tam sim no tsis tshaj 80% ntawm tus nqi nominal. Rau cov lus qhia nrog me me pixel suab, tus nqi tam sim no yuav tsum tau txo qis ntxiv vim tias tsis muaj cua sov dissipation. Raws li qhov tsis sib haum xeeb ntawm cov xim liab, ntsuab, thiab xiav LEDs, cov txiaj ntsig tam sim no ntawm xiav thiab ntsuab LEDs tuaj yeem raug txo kom txo qis kom muaj qhov sib npaug dawb sib xws tom qab siv sijhawm ntev -.
LED Mixing: LEDs ntawm tib xim tab sis sib txawv brightness theem yuav tsum tau tov, los yog teem raws li ib tug discrete LED configuration daim duab, kom ntseeg tau zoo ib yam brightness rau txhua xim nyob rau hauv tag nrho cov tshuaj ntsuam thiab tsis txhob localized brightness inconsistencies cuam tshuam rau cov zaub nyhuv.
Tswj LED Verticality: Rau los ntawm - qhov LEDs, xyuas kom meej tias lawv nyob rau sab xis ntawm lub PCB lub rooj tsavxwm thaum lub sij hawm reflow. Kev sib txawv yuav cuam tshuam qhov ci ntsa iab ntawm LEDs, ua rau cov xim thaiv.
Thaum tshav kub kub Dissipation Design: LEDs ua kom sov thaum ua haujlwm. Qhov kub ntau dhau yuav cuam tshuam rau tus nqi lwj thiab ruaj khov; Yog li ntawd, lub tshav kub dissipation tsim ntawm PCB board thiab txee yog ib qho tseem ceeb heev.
Tswj Cold Solder Joints: Thaum lub vijtsam LED tsis teeb, muaj ntau dua 50% qhov tshwm sim uas nws tshwm sim los ntawm cov pob qij txha txias, xws li cov pob qij txha txias ntawm LED pins, IC pins, thiab header/socket connectors. Kev txhim kho cov txheej txheem nruj thiab txhim kho kev soj ntsuam zoo yog tsim nyog. Kev vibration kuaj ua ntej xa khoom xa tuaj yog ib txoj hauv kev tshuaj xyuas zoo.
Tsav Circuit Court Design: Kev teeb tsa ntawm tus tsav tsheb ICs ntawm tus tsav tsheb Circuit Court board ntawm cov zaub module cuam tshuam rau LED brightness. Yog tias cov zis tam sim no ntawm tus tsav tsheb IC mus deb dhau, qhov kev poob qis yuav loj dhau, cuam tshuam rau qhov kev khiav hauj lwm voltage ntawm LEDs thiab ua rau txo qhov ci. Qhov no yog qhov laj thawj vim li cas LEDs nyob ib puag ncig ntawm cov npoo ntawm lub teeb pom kev zoo tsis tshua muaj ci dua li cov hauv nruab nrab. Yog li ntawd, lub qhov dej zoo -tsim tus tsav tsheb Circuit Court layout yog qhov tseem ceeb los xyuas kom meej qhov ci zoo ib yam.
III. Hloov Kev Tiv Thaiv
Hloov Ib ntus: Thaum tig ntawm lub vijtsam, qhib lub computer ua ntej, tom qab ntawd lub vijtsam; Thaum tua lub vijtsam, tua lub vijtsam ua ntej, tom qab ntawd lub computer. Tig lub khoos phis tawj ua ntej tua cov zaub yuav ua rau lub teeb ci ntawm qhov screen, hlawv tawm cov hlab LED.
Screen Switching Interval: Lub sijhawm hloov pauv ntawm lub vijtsam yuav tsum ntau dua 5 feeb.
Fais fab- ntawm cov xwm txheej: Lub vijtsam tsuas tuaj yeem siv tau tom qab lub khoos phis tawj tau nkag mus rau engineering tswj software.
Tsis txhob tig ntawm lub vijtsam nrog lub vijtsam dawb puv: Lub kaw lus inrush tam sim no yog qhov loj tshaj plaws hauv lub xeev puv npo dawb; qhov no yuav tsum zam.
Tsis txhob qhib lub vijtsam hauv lub xeev tsis muaj kev tswj hwm: Lub kaw lus inrush tam sim no loj heev nyob rau hauv lub xeev tsis tswj. Tsis txhob qhib lub vijtsam yog tias lub khoos phis tawj tsis nyob hauv kev tswj software, tsis muaj lub zog, lossis lub zog tswj lub zog tsis raug.
Ua tib zoo saib xyuas qhov kub thiab txias: Tsis txhob tso lub vijtsam rau lub sijhawm ntev yog tias qhov ntsuas kub nyob ib puag ncig siab dhau los lossis cov cua sov tsis zoo.
Tig lub vijtsam tam sim: Yog tias ib kab ntawm lub vijtsam hluav taws xob ua kom ci ntsa iab, tua lub vijtsam tam sim ntawd. Tsis txhob tso nws rau lub sijhawm ntev.
Txheeb xyuas lub hwj chim hloov: Yog tias lub vijtsam hloov pauv lub zog nquag mus ncig, xyuas lub vijtsam lossis hloov lub zog hloov tam sim.
Tsis tu ncua xyuas kev ruaj ntseg mounting: Tsis tu ncua xyuas cov ntsiab lus mounting rau kev ruaj ntseg. Yog tias xoob, kho, ntxiv dag zog, lossis hloov cov khoom siv mounting.
Kev tiv thaiv kab tsuag: Nyob ntawm ib puag ncig ntawm lub vijtsam thiab chav tswj, tiv thaiv kab tom. Muab tshuaj tua kab mob yog tias tsim nyog.
IV. Kev ceev faj rau kev hloov pauv thiab hloov kho rau chav tswj:
Kev sib txuas fais fab cable: Cov kab nruab nrab thiab nyob ntawm lub computer thiab tswj lub hwj chim cables yuav tsum tsis txhob thim rov qab. Txuas lawv hauv lawv qhov chaw qub. Yog tias muaj cov khoom siv peripheral, sim lub casing rau lub zog tom qab kev sib txuas.
Kev tshuaj xyuas cov cuab yeej hloov chaw: Ua ntej txav cov cuab yeej tswj xws li cov khoos phis tawj, xyuas cov kev sib txuas xoob thiab cov tswj vaj huam sib luag.
Kev Sib Txuas Lus Cable Txoj Haujlwm: Tsis txhob hloov txoj haujlwm lossis qhov ntev ntawm cov xov tooj sib txuas lus thiab cov khoom sib txuas.
Kev daws teeb meem: Yog tias muaj luv luv Circuit Court, tripping, burnt wires, los yog pa luam yeeb tshwm sim tom qab hloov chaw, tsis txhob rov sim dua los ntawm lub hwj chim; tam sim tshawb xyuas qhov teeb meem.
V. Software Kev Ua Haujlwm thiab Kev Tiv Thaiv Kev Siv
Software thaub qab: thaub qab WIN2003, WINXP, daim ntawv thov, software installers, databases, thiab lwm yam. Nws raug nquahu kom siv "ib-nias rov qab" software.
Master Installation thiab Rov Qab: Ua tau zoo hauv cov txheej txheem kev teeb tsa, thawj cov ntaub ntawv rov qab, thiab thaub qab.
Control Parameter Settings: Master tswj parameter nqis thiab cov ntaub ntawv yooj yim preset hloov kho.
Kev Ua Haujlwm Zoo Tshaj Plaws: Ua kom paub siv qhov program rau kev ua haujlwm thiab kho.
Regular Data Cleanup: Tsis tu ncua xyuas thiab tshem tawm cov ntaub ntawv tsis cuam tshuam.
Kev Ua Haujlwm Tus Neeg Ua Haujlwm: Tsis yog- cov neeg ua haujlwm raug xaiv yuav tsum tsis ua haujlwm software.
