Thaum lub teeb ci tshiab nkag mus rau hauv kev ua lag luam, qhov teeb meem stroboscopic kuj tshwm sim. PNNL's Miller Kuv tau hais tias: Lub amplitude ntawm lub teeb tso zis ntawm LED yog ntau dua li ntawm lub teeb incandescent lossis lub teeb fluorescent. Txawm li cas los xij, tsis zoo li HID lossis fluorescent teeb, teeb pom kev zoo hauv lub xeev SSL yog DC cov cuab yeej, uas txhais tau hais tias thaum lub sijhawm tam sim no tau muab, LED tuaj yeem teeb yam tsis muaj flicker.
Rau cov kab hluav taws xob LED yooj yim uas tsis siv lub zog hloov kho tam sim no, qhov ci ntawm LED yuav hloov nrog lub voj voog hloov tam sim no. Tus tsav plays ob lub luag haujlwm, kev siv hluav taws xob thiab kev hloov kho. Cov txheej txheem hloov dua siab tshiab los ntawm kev tsav tsheb mus rau LED, alternating tam sim no mus rau tam sim no ncaj qha yuav tsim hluav taws xob thiab cov zis tam sim no ripples. Hom ripple no muaj nyob ntawm ob zaug ntawm qhov khoom siv hluav taws xob, uas yog 120H hauv Tebchaws Meskas. Muaj kev sib raug zoo ntawm cov zis ntawm LED thiab cov zis waveform ntawm tus tsav. Dimming yog lwm qhov ua rau flicker. Ib txwm dimmers, xws li TRIAC dimmers (ib qho khoom siv hluav taws xob uas tuaj yeem ua ob txoj hauv kev), kho qhov tam sim no thiab txo cov teeb pom kev zoo los ntawm kev ncua lub sijhawm kaw thaum lub voj voog hloov. Rau LEDs, nws yog qhov zoo tshaj plaws los siv pulse width modulation (PWM) hloov LEDs ntawm zaus tshaj 200 Hz. Txawm li cas los xij, Benya tau hais ntxiv tias: "Yog tias koj siv pulse width modulation ntawm qhov tsawg zaus, xws li cov khoom siv hluav taws xob ib txwm muaj, nws yuav ua rau muaj kev kub ntxhov heev."
Kev nkag siab zoo ntawm LED stroboscopic:
Muaj plaub txoj hauv kev ua rau lub teeb ci LED kom flicker lossis tig rau thiab tawm.
1) Lub ED teeb hlaws tsis sib xws rau LED tsav lub zog, thiab ib txwm 1W hlaws nrog tam sim no: 280-30mA.
Voltage: 3.0-3.4V, yog tias lub teeb nti tsis muaj lub zog txaus, nws yuav ua rau lub teeb ci ntsa iab, thiab tam sim no siab dhau.
Thaum nws tau txais, nws yuav qhib thiab kaw. Hauv qhov xwm txheej hnyav, cov hlau kub lossis tooj liab ua rau hauv lub teeb hlaws yuav raug hlawv, ua rau lub teeb hlaws tsis teeb.
2) Nws yuav yog tias lub zog tsav tsheb tawg, tsuav yog nws hloov nrog lwm lub zog tsav tsheb zoo, nws yuav tsis flash
3) Yog tias tus neeg tsav tsheb muaj kev tiv thaiv kub dhau, thiab cov khoom siv hluav taws xob ua haujlwm ntawm lub teeb tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, tus neeg tsav tsheb tiv thaiv kub dhau pib.
Yuav muaj qhov tshwm sim flashing thiab flashing thaum ua haujlwm, piv txwv li: 20W dej nyab lub tsev yog siv los sib sau ua ke 30W teeb, tsis muaj cua sov ua haujlwm. Nws yuav zoo li no yog tias ua tiav.
4) Yog tias lub teeb sab nraum zoov kuj muaj qhov tshwm sim ntawm flashing rau thiab tawm, ces lub teeb yuav raug dej nyab thiab qhov tshwm sim yuav flashing thiab nws yuav tsis tig. Lub teeb hlaws dai thiab tus tsav tsheb yuav tawg. Tsuas yog hloov lub teeb ci.
Yuav ua li cas txo stroboscopic
Tus yuam sij rau mitigating stroboscopic flicker yog tsav tsheb, uas tuaj yeem daws tau los ntawm kev muab qhov tsis tu ncua, tsis yog oscillating tam sim no. Txawm li cas los xij, cov tuam txhab lag luam yuav tsum ntsuas lwm yam kom tsav tus nqi, qhov loj me, kev ntseeg tau thiab kev ua haujlwm zoo thaum txhawb nqa cov khoom siv LED. Ree yog sawv cev los ntawm Mark McClear, tus lwm thawj coj ntawm engineering. Lub hom phiaj siv lub luminaire kuj yuav tsum tau txiav txim siab los xyuas kom meej tias cov khoom tsis dhau-tsim, vim hais tias nyob rau hauv qee lub teeb pom kev zoo stroboscopic flicker yog siv tau, thiab qee qhov tsis yog. Mcclear kuj tau hais tias: "Cov neeg tsim khoom tau sim ua kom zoo dua cov khoom lag luam uas tsim nyog rau cov ntawv thov twg, thiab yuav ua li cas kom strobe tau txais yam tsis tau nce nqi." Capacitors tuaj yeem kho AC ripple los ntawm tus tsav tsheb mus rau LED, tab sis nws kuj muaj qhov tsis zoo, Benya hais. Yog li ntawd, nyob rau hauv ib tug compact thiab tsawg qhov chaw, xws li LED hloov lub teeb qhov chaw, kev siv cov capacitors tsis ua hauj lwm. Siv mem tes dav modulation (PWM) adjustable LEDs, manufacturers yuav kho tau tam sim no mus rau heev. siab zaus ntau tshaj li ob peb kilohertz Qhov no zoo ib yam li cov hluav taws xob ballasts tsav cov teeb fluorescent Tab sis qhov siab dua qhov yuav tsum tau muaj, qhov ze ntawm tus tsav tsheb thiab LED "Hmoov tsis zoo, ntau tus neeg xav tsav tsheb deb ntawm lub teeb pom kev zoo, yog li nws Nws tsis yog ib txwm ua tau. "Benya hais tias, txhawm rau ua kom yooj yim qhov kev sib tw sib tw ntawm dimmers thiab dimmable LED lub teeb cav (LED lub cav), EMA (Lub Koom Haum Hluav Taws Xob / Chaw Tsim Tshuaj Hauv Tebchaws) tso tawm NEMA SSL7A-2013 "Lub Xeev Teeb Pom Kev SSL Phase Txiav Dimming : Basic Compatibility ", qhov no yog ib qho kev qhia rau cov khoom siv teeb pom kev zoo tsim thiab cov chaw tsim khoom, tsuav yog lub dimmer thiab LED lub teeb lub cav ua tau raws li tus qauv, lawv tau sib xws Megan, NEMA tus thawj coj kev ua haujlwm, hais tias tus qauv no yog thawj zaug hauv kev lag luam. thiab kos npe los ntawm 24 lub tuam txhab loj. Lub hom phiaj ntawm SSL7A yog kom tshem tawm qhov kev sib tw ntawm cov teeb thiab dimmers. Dab tsi yuav tsum tau hais txog yog tias tus qauv no tsuas yog siv rau cov thev naus laus zis tom qab tus qauv tso tawm. Raws li nws tau hais, tus qauv tsis muab ib txoj hauv kev los "txiav txim siab qhov sib haum xeeb ntawm cov khoom uas twb muaj lawm lossis teeb tsa LED lub teeb cav thiab theem-txiav dimmers".
Post lub sij hawm: Jan-05-2022
