Dimming yog txheej txheem ntawm kev sib txawv ntawm lub teeb tawm ntawm lub teeb ci. Qhov no yog ua los teeb lub ambience los yog txuag lub zog thaum lub teeb tso zis tag nrho tsis xav tau tiag tiag. Feem ntau ntawm cov dimming tshuab siv ua ntej LEDs los yog niaj hnub no yog tsim los rau incandescent teeb. Cov tshuab no feem ntau siv rau pem hauv ntej-theem thiab rov qab-theem dimming txoj kev uas lub dimmer cuam tshuam los yog chops AC kab input kom txo tau lub hwj chim mus rau hauv tus neeg tsav tsheb. Nrog lub zog input tsawg dua, yuav muaj qhov tso tawm tsawg dua ntawm tus tsav tsheb, thiab qhov ci ntawm lub teeb yuav txo qis.

Feem ntau hnov ​​​​cov ntsiab lus dimming hauv LED teeb pom kev lag luam yog DMX, DALI, 0/1-10V, thyristor (TRIAC), WIFI, Bluetooth, RF, thiab Zigbee. Cov no yog cov input signals ntawm lub dimming fais fab mov. Kev xaiv ntawm cov tswv yim sib txawv yog vim qhov kev xav ntawm ib puag ncig (kev teeb tsa, kev xaim), kev ua haujlwm, tus nqi, thiab qhov yooj yim ntawm kev nthuav dav tom qab. Qhov zoo ntawm cov nyhuv dimming yog tsuas yog txiav txim los ntawm cov zis dimming txoj kev ntawm lub dimming fais fab mov, tsis yog cov input dimming txoj kev.

Cov zis dimming txoj kev dimming fais fab mov feem ntau muab faib ua ob hom, Constant Current Reduction (CCR) thiab Pulse Width Modulation (PWM) (tseem hu ua Analog Dimming).

Ua ntej, ib qho kev qhia meej: qhov tseeb, tag nrho LED strips yog dimmable.

Thaum koj mus kav khw rau cov teeb pom kev zoo hauv tsev xws li A-style qij, koj yuav pom TSIS DIMMABLE teev nyob rau hauv cov lus piav qhia ntawm cov khoom. Qee qhov LED qhov muag teev tsis yog dimmable vim hais tias cov hluav taws xob hluav taws xob hauv lub teeb LED tsis yog tsim los txhais cov teeb liab dimming ntawm phab ntsa dimmer, uas, nyob rau hauv lem, yog / tau npaj rau ib txwm incandescent noob.

Ntawm qhov tod tes, LED strips tsis yog tsim los txuas ncaj qha mus rau qhov hluav taws xob siab (xws li 120V AC phab ntsa socket), thiab yuav tsum muaj lub zog hluav taws xob los hloov cov hluav taws xob ntau dua AC mus rau qis dua 12V lossis 24V DC voltage.

Yog li ntawd, yog tias phab ntsa dimmer koom nrog, nws yuav tsum xub "sib tham" rau lub hwj huam mov ua ntej yuav muaj kev dimming ntawm LED sawb. Yog li ntawd, cov lus nug dimmable / tsis dimmable nyob ntawm lub hwj huam mov, thiab seb nws puas tuaj yeem txhais cov teeb liab dimming uas tsim los ntawm phab ntsa-dimmer.

Ntawm qhov tod tes, zoo tag nrho LED strips (raws li nyob rau hauv, lub strip nws tus kheej) yog dimmable. Muab qhov tsim nyog DC hluav taws xob teeb liab (feem ntau PWM), txhua lub teeb ci LED tuaj yeem hloov kho dawb.

Thov nco ntsoov tias feem ntau muaj ob hom coj strips ntawm lub khw, tas mus li thiab tsis tu ncua voltage. Lawv cov kev cai rau dimming fais fab mov yog txawv. Thov xa mus rau lub rooj hauv qab no:

Dab tsi tswj qhov ci ntawm LED?

Tus nqi tam sim no ntws los ntawm LED txiav txim siab nws lub teeb tso zis. Yog tias peb saib ntawm daim duab saum toj no, peb yuav pom tias hloov qhov voltage kuj hloov pauv tam sim no los ntawm LED, ua rau peb xav txog qhov dimming LED los ntawm kev nce lossis txo qhov voltage hla nws. Txawm li cas los xij, peb kuj tuaj yeem pom tias thaj av uas peb tuaj yeem hloov qhov voltage yam tsis tau txais tam sim no ntau dhau yog me me. Tsis tas li ntawd, qhov tam sim no tsis tuaj yeem kwv yees tau zoo, raws li qhov ci ntsa iab.

Yog hais tias peb luam theej duab ib co LED datasheets, peb yuav pom tau hais tias lub luminous siv ntawm ib tug LED nyob rau hauv pem hauv ntej tam sim no. Lawv kev sib raug zoo yog yuav luag linear ib yam nkaus thiab. Yog li nyob rau hauv dimming LEDs, peb coj mus rau pem hauv ntej voltage raws li tus nqi ruaj thiab tswj qhov tam sim no.

LED dimming txoj kev

Tag nrho cov khoom siv LED xav tau tus neeg tsav tsheb kom dim, thiab muaj ob txoj hauv kev uas cov neeg tsav tsheb siv kom dim LEDs: Pulse Width Modulation thiab Constant Current Reduction (tseem hu ua Analog Dimming).

Mem Tes Dav Dav Tes Haujlwm (PWM)

Hauv PWM, LED yog qhib thiab kaw ntawm nws qhov ntsuas tam sim no ntawm lub siab zaus. Kev hloov ceev ceev yog siab txaus rau tib neeg qhov muag pom. Dab tsi txiav txim siab qhov ci ntsa iab ntawm LED yog lub luag haujlwm lub voj voog lossis qhov piv ntawm lub sijhawm thaum LED ON thiab tag nrho lub sijhawm ntawm ib lub voj voog ua tiav.

Zoo:

• Muab cov zis ntau meej
• Haum rau cov ntawv thov uas xav tau kom muaj qee yam yam ntxwv ntawm LED xws li xim, kub, lossis kev ua haujlwm zoo
• Dav dimming ntau - tuaj yeem txo cov teeb pom kev zoo rau qhov muaj nqis tsawg dua 1 feem pua
• Zam kev hloov xim los ntawm kev ua haujlwm ntawm LED ntawm nws qhov kev pom zoo rau pem hauv ntej voltage / forward tam sim no ua haujlwm taw tes

tsis zoo:

• Cov tsav tsheb yog complex thiab kim
• Txij li thaum PWM siv kev hloov ceev ceev, qhov nrawm nrawm thiab ntog ntug ntawm txhua lub voj voog hloov ua tsis xav tau EMI hluav taws xob
• Tus neeg tsav tsheb yuav muaj teeb meem kev ua haujlwm thaum khiav nrog cov xov hlau ntev vim tias cov yam ntxwv tsis zoo ntawm cov xaim (capacitance thiab inductance) tuaj yeem cuam tshuam nrog cov npoo nrawm ntawm PWM.

Ua haujlwm ua haujlwm

Lub sij hawm lub luag hauj lwm voj voog piav qhia qhov feem ntawm 'nyob rau' lub sij hawm mus rau lub ncua sij hawm los yog 'lub sij hawm' ntawm lub sij hawm; Lub voj voog qis qis sib raug rau lub zog qis, vim tias lub hwj chim tawm rau feem ntau ntawm lub sijhawm. Lub voj voog lub luag haujlwm tau qhia nyob rau hauv feem pua, 100% ua tiav rau. Thaum lub teeb liab digital nyob rau ib nrab ntawm lub sijhawm thiab tawm ntawm ib nrab ntawm lub sijhawm, cov teeb liab digital muaj lub luag haujlwm ntawm 50% thiab zoo li "square" nthwv dej. Thaum lub teeb liab digital siv sijhawm ntau hauv lub xeev tshaj li lub xeev tawm, nws muaj lub luag haujlwm ntawm> 50%. Thaum lub teeb liab digital siv sijhawm ntau dua hauv lub xeev tawm tshaj li lub xeev, nws muaj lub luag haujlwm ntawm <50%. Nov yog ib daim duab uas qhia txog peb qhov xwm txheej no:

Zaus

Lwm qhov tseem ceeb ntawm pulse width modulation (PWM) teeb liab yog nws qhov zaus. Lub PWM zaus qhia ceev npaum li cas lub PWM teeb liab ua tiav ib lub sij hawm, qhov twg lub sij hawm yog lub sij hawm coj lub teeb liab mus rau thiab tawm.

Reconciling lub luag hauj lwm lub voj voog thiab zaus ntawm PWM teeb liab tsim muaj peev xwm ntawm tus tsav tsheb dimmable LED.

Kev txo qis tas mus li (CCR)

Hauv CCR, tam sim no ntws tsis tu ncua los ntawm LED. Yog li ntawd lub LED yeej ib txwm ON, tsis zoo li nyob rau hauv PWM qhov twg lub LED yog ib txwm tig ON thiab OFF. Qhov ci ntsa iab ntawm LED yog hloov pauv los ntawm kev hloov qib tam sim no.

Zoo:

• Nws tuaj yeem siv nrog cov ntawv thov nrog cov kev cai EMI nruj thiab cov chaw taws teeb uas siv cov xaim ntev ntev
• Cov neeg tsav tsheb CCR muaj qhov tso zis ntau dua qhov txwv (60 V) dua li cov tsav tsheb uas siv PWM (24.8 V) thaum muab faib ua UL Class 2 tsav tsheb rau qhov chaw qhuav thiab ntub dej

tsis zoo:

• CCR tsis haum rau cov ntawv thov uas dimming lub teeb theem qis dua 10 feem pua ​​​​yog xav tau vim tias nyob rau ntawm qhov tsis tshua muaj tam sim no, LEDs tsis ua haujlwm zoo thiab cov teeb pom kev zoo tuaj yeem ua tsis zoo.
• Tsawg tsav tam sim no tuaj yeem ua rau xim tsis sib xws

DMX512 Dimming

DMX 512 yog tus qauv rau kev sib txuas lus digital uas feem ntau siv los tswj cov teeb pom kev zoo thiab cuam tshuam. Nws yog Ameslikas tsim raws li tus qauv qauv rau kev tswj cov theem teeb pom kev zoo dimmers, uas, ua ntej DMX512, tau ua hauj lwm ntau yam incompatible proprietary protocols. Nws tau dhau los ua thawj txoj hauv kev txuas cov tswj hwm (xws li lub teeb pom kev zoo) rau dimmers thiab cov khoom siv tshwj xeeb xws li pos huab thiab lub teeb ntse.

DMX512 kuj tau nthuav dav siv rau hauv cov khoom siv sab hauv uas tsis yog kev ua yeeb yam thiab cov teeb pom kev zoo nkauj, ntawm cov nplais xws li cov hlua Christmas teeb rau hluav taws xob billboards thiab chaw ntau pob lossis chaw ua yeeb yam. Tam sim no nws tuaj yeem siv los tswj yuav luag txhua yam, xav txog nws qhov chaw nyob hauv txhua hom chaw.

DALI Dimming

Lub Digitally Addressable Lighting Interface (DALI) tau pib hauv Tebchaws Europe thiab tau siv ntau xyoo nyob rau hauv lub ntiaj teb no. Tam sim no nws tau dhau los ua neeg nyiam nyob hauv Tebchaws Meskas thiab. DALI tus qauv tso cai rau kev tswj hwm digital ntawm tus kheej cov khoom siv los ntawm cov txheej txheem sib txuas lus tsis tshua muaj hluav taws xob uas tuaj yeem xa cov ntaub ntawv mus rau lub teeb pom kev zoo thaum tseem tau txais cov ntaub ntawv los ntawm cov khoom siv, ua qhov no yog ib qho cuab yeej tseem ceeb rau kev tsim cov ntaub ntawv saib xyuas thiab tswj kev sib koom ua ke. DALI tso cai rau kev hais lus rau ib tus neeg sib tw, nrog rau 64 qhov chaw nyob muaj peev xwm tsim tau rau hauv 16 thaj chaw sib txawv. DALI kev sib txuas lus tsis yog polarity rhiab heev, thiab ntau yam kev sib txuas kev teeb tsa muaj peev xwm ua tau nrog cov txheej txheem no. Daim duab kos duab DALI ib txwm muaj nyob hauv qab no:

0/1-10V Dimming

Thawj thiab yooj yim tshaj plaws hluav taws xob teeb pom kev zoo tswj cov teeb liab, qhov hluav taws xob tsawg 0-10V dimmers, siv qhov hluav taws xob tsawg 0-10V DC teeb liab txuas nrog txhua lub zog LED lossis Fluorescent ballast. Ntawm 0 Volts, lub cuab yeej yuav dim mus rau qhov tsawg kawg nkaus lub teeb pom kev los ntawm tus neeg tsav tsheb dimming, thiab ntawm 10 Volts lub cuab yeej yuav ua haujlwm ntawm 100%. Daim duab kab hluav taws xob 0-10V raug qhia hauv qab no:

TRIAC Dimming

TRIAC stands rau Triode rau Alternating Tam sim no, thiab yog ib qho kev hloov uas siv los tswj fais fab. Thaum siv hauv kev siv teeb pom kev zoo, nws feem ntau hu ua 'TRIAC dimming'.

TRIAC circuits tau siv dav thiab ntau heev hauv AC fais fab kev tswj kev siv. Cov kab hluav taws xob no tuaj yeem hloov cov hluav taws xob siab thiab siab heev ntawm tam sim no hauv ob feem ntawm AC waveform. Lawv yog cov khoom siv semiconductor, zoo ib yam li diode.
TRIAC feem ntau yog siv los ua ib txoj hauv kev ntawm lub teeb dimming hauv kev siv teeb pom kev zoo hauv tsev thiab tuaj yeem ua haujlwm raws li lub zog tswj hauv cov motors.

TRIAC lub peev xwm los hloov cov hluav taws xob siab ua rau nws zoo tagnrho rau siv hauv ntau hom kev siv hluav taws xob tswj. Qhov no txhais tau tias nws tuaj yeem ua haujlwm kom haum rau txhua hnub teeb pom kev zoo-tswj xav tau. TRIAC circuits yog siv rau ntau tshaj li qhov teeb pom kev hauv tsev, txawm li cas los xij. Lawv kuj tseem siv tau thaum tswj cov kiv cua thiab lub cev muaj zog me me thiab hauv lwm yam AC hloov thiab tswj kev siv.
Yog tias koj tab tom nrhiav kev tswj ntau lub hom phiaj, peb paub tseeb tias koj yuav pom TRIAC cov txheej txheem muaj txiaj ntsig.

TRIAC yog qhov hluav taws xob siab (~ 230v) dimming. Txuas lub TRIAC module rau koj cov khoom siv loj (nruab nrab ntawm 100-240v AC), koj tuaj yeem tau txais cov nyhuv dimming uas koj xav tau.

RF dimming

Xov tooj cua zaus (RF) dimming siv lub xov tooj cua zaus teeb liab sib txuas lus nrog tus tswj LED kom dim xim ntawm koj lub teeb LED.

Bluetooth, WIFI, Zigbee Dimming

Bluetooth yog ib tug luv luv-range wireless technology qauv uas yog siv rau kev sib pauv cov ntaub ntawv ntawm tsau thiab mobile pab kiag li lawm nyob rau hauv luv luv siv UHF xov tooj cua nthwv dej nyob rau hauv lub ISM bands, los ntawm 2.402 GHz mus rau 2.48 GHz, thiab kev tsim kho tus kheej cheeb tsam networks (PANs). Nws yog tsuas yog siv los ua lwm txoj hauv kev sib txuas ntawm cov xov hlau, sib pauv cov ntaub ntawv ntawm cov khoom siv txav tau ze thiab txuas cov xov tooj ntawm tes thiab cov suab paj nruag nrog lub mloog pob ntseg wireless. Nyob rau hauv hom siv dav tshaj plaws, kev xa hluav taws xob yog txwv rau 2.5 milliwatts, muab nws luv luv txog li 10 meters (33 ft).

Wi-Fi lossis WiFi (/ˈwaɪfaɪ/), yog ib tsev neeg ntawm wireless network raws tu qauv, raws li IEEE 802.11 tsev neeg ntawm cov qauv, uas feem ntau yog siv rau cov cheeb tsam hauv cheeb tsam sib txuas ntawm cov khoom siv thiab kev siv Internet, tso cai rau cov khoom siv digital nyob ze sib pauv cov ntaub ntawv los ntawm xov tooj cua nthwv dej. Cov no yog cov khoos phis tawj siv ntau tshaj plaws hauv ntiaj teb, siv thoob ntiaj teb hauv tsev thiab chaw ua haujlwm me me los txuas cov desktop thiab laptop computers, ntsiav tshuaj computers, smartphones, smart TVs, printers, thiab cov neeg hais lus ntse ua ke thiab mus rau lub wireless router txuas rau lawv. Is Taws Nem, thiab hauv cov chaw nkag wireless hauv cov chaw pej xeem xws li khw kas fes, tsev so, tsev qiv ntawv thiab tshav dav hlau los muab pej xeem Is Taws Nem nkag rau cov khoom siv mobile.

ZigBee yog IEEE 802.15.4-raws li cov lus qhia tshwj xeeb rau cov txheej txheem kev sib txuas lus siab siv los tsim cov kev sib txuas ntawm tus kheej nrog cov xov tooj cua me, lub zog qis, xws li kev siv hluav taws xob hauv tsev, cov ntaub ntawv kho mob, thiab lwm yam tsis muaj hluav taws xob tsawg. -bandwidth xav tau, tsim rau cov phiaj xwm me me uas xav tau kev sib txuas wireless. Li no, Zigbee yog lub zog qis, cov ntaub ntawv tsis tshua muaj nqi, thiab ze ze (piv txwv li, thaj chaw tus kheej) wireless ad hoc network.

Xaus Kawg

Tag nrho cov LED strips yog dimmable. Tab sis thov nco ntsoov muaj ob hom coj sawb, tas li voltage coj sawb, thiab tsis tu ncua tam sim no coj sawb. Qhov tam sim no coj sawb yuav tsum tau siv nrog PWM tso zis teeb liab dimmable coj sawb! Rau qhov tsis tu ncua voltage LED strips, koj tuaj yeem xaiv PWM lossis CCR tso zis teeb liab dimming fais fab mov raws li qhov project xav tau. Thiab muaj ntau lub tswv yim tawm tswv yim, xws li DMX512, DALI, 0/1-10V, TRIAC, WIFI, Bluetooth, RF, thiab Zigbee.
Koj tuaj yeem xaiv lub teeb liab tsim nyog xav txog ib puag ncig (kev teeb tsa, xaim), muaj nuj nqi, nqi, thiab kev ua kom yooj yim ntawm kev nthuav dav tom qab.

LEDYi tsim cov khoom zoo LED strips thiab LED neon flex. Tag nrho peb cov khoom dhau los ntawm cov chaw soj nstuam high-tech los xyuas kom meej qhov zoo tshaj plaws. Dhau li ntawd, peb muab cov kev xaiv customizable ntawm peb LED strips thiab neon flex. Yog li, rau hwm LED sawb thiab LED neon flex, hu rau LEDYi ASAP!