Ib qho zoo LED puv xim zaub yuav tsum tau yoog rau qhov sib txawv ntawm qhov kub thiab txias, huab cua sib txawv, thiab tuaj yeem siv tau ntau zaus. Nws kuj muaj txiaj ntsig zoo rau qhov ci ntsa iab ntawm qhov deb thiab ze, tshwj xeeb tshaj yog rau kev ua yeeb yam loj. Lub teeb pom kev zoo yuav tsum yog qhov zoo, tab sis qee zaum peb pom tias qhov ci ntawm LED tsis zoo ib yam. Dab tsi yog vim li cas rau qhov ci tsis sib xws ntawm LED puv xim zaub? Raws li kev paub ntau xyoo, tus editor tau sau cov ntsiab lus hauv qab no peb yam uas tuaj yeem ua rau LED Lub teeb ci ntawm cov xim puv xim tsis sib haum.
Full xim coj zaub
01 Lub teeb-emitting element
LED tag nrho-xim zaub lub teeb-emitting ntsiab, uas yog LED teeb-emitting raj, inconsistent brightness nyob rau hauv cov txheej txheem ntau lawm yog inevitable. Txawm li cas los xij, qhov kev ntsuas tau txais los ntawm LED cov khoom siv hluav taws xob ua lag luam yog ua kom muaj kev faib tawm tom qab tsim khoom tiav. Qhov me me qhov sib txawv ntawm qhov sib txawv ntawm ob cov ntaub ntawv nyob ib sab, qhov zoo dua qhov sib xws, tab sis cov tsos ntawm cov khoom qis thiab cov khoom muag siab yuav hnyav dua. Yog li ntawd, txhua tus neeg tsim khoom tswj qhov ci ntsa iab ntawm ob lub zog uas nyob ib sab ntawm 20 feem pua.
02 tsav Cheebtsam
LED tag nrho-xim zaub tsav Cheebtsam feem ntau yog cov tsav tam sim no, xws li MBl5026 thiab lwm yam. Cov chips no suav nrog 16 qhov tso tawm tam sim no tsis tu ncua, uas tuaj yeem siv los teeb tsa tus nqi tso tawm tam sim no. Qhov yuam kev ntawm txhua qhov tso zis ntawm tib lub nti yog tswj tsis pub dhau 3 feem pua, thiab cov khoom yuam kev ntawm cov chips sib txawv yog tswj tsis pub dhau 6 feem pua. Nws yog ib txwm ua rau tag nrho-xim LED zaub kom pom qhov teeb meem tsis zoo ntawm 25 feem pua ntawm pixels. Yog tias lub raj LED siv tsis yog tib theem thiab hom puv xim LED zaub, qhov ci ntsa iab yuav nce mus rau ntau dua 40 feem pua.
Full xim coj zaub
Nws tseem tsim nyog sau cia tias qhov tsis sib xws ntawm qhov ci ntawm cov xim puv xim LED yog qhov laj thawj tseem ceeb rau kev tsim ntawm lub vijtsam. Nws tsis tuaj yeem raug kho nrog cov khoom siv tom qab kho, tsuav nws tau pom los ntawm LED cov chaw tsim khoom thaum lub sijhawm tsim khoom thiab tsim khoom. Yog li ntawd, yog tias koj yuav ib lub vijtsam nrog lub teeb ci tsis sib xws, thov hu rau koj tus neeg muab kev pabcuam lossis cov chaw tsim khoom los daws qhov teeb meem.
Cov zaub yog tov nrog cov ntaub ntawv thaum lub sij hawm tsim khoom, thiab sib txawv batch ntawm dot matrix yog siv. Yuav daws qhov sib txawv xim ntawm LED hluav taws xob li cas?
Txoj kev 1
hloov cov tam sim no ntws los ntawm LED, lub dav LED raj tso cai rau ib tug tas mus li ua hauj lwm tam sim no ntawm txog 20 mA, tshwj tsis yog rau lub saturation ntawm lub liab LED, lub brightness ntawm lwm LEDs yog feem ntau proportional rau lub tam sim no ntws;
Txoj kev thib ob
Siv qhov pom kev inertia ntawm tib neeg lub qhov muag, lub pulse width modulation method yog siv los ua kom tiav grey scale tswj, uas yog, lub teeb mem tes dav (piv txwv li lub voj voog lub luag hauj lwm) yog ib ntus hloov, tsuav yog lub sij hawm rov qab teeb pom kev zoo yog luv txaus ( piv txwv li lub refresh zaus yog siab txaus), tib neeg lub qhov muag tsis xav tias lub luminous pixels yog co. Vim tias pulse width modulation yog tsim nyog rau kev tswj cov digital, niaj hnub no thaum microcomputers feem ntau siv los muab thiab LED cov ntsiab lus, yuav luag tag nrho cov LED hluav taws xob qhia siv pulse width modulation los tswj cov qib grey.
