Dimming shine tsarin canza yanayin fitowar haske na tushen haske. Ana yin wannan don saita yanayi ko don adana makamashi lokacin da ba a buƙatar cikakken fitowar haske da gaske. Yawancin tsarin dimming da aka yi amfani da su kafin LEDs ko ma a yau an tsara su don fitilu masu haske. Waɗannan tsarin yawanci suna amfani da hanyoyin rage-ɓangaro da gaba-gaba da baya-lokaci inda dimmer ke katsewa ko yanke shigar da layin AC don rage wutar da ke shiga cikin direba. Tare da ƙarancin ƙarfin shigarwa, za a sami ƙarancin fitarwa akan direba, kuma hasken hasken yana raguwa.

Mafi yawan jin kalmomin dimming keywords a cikin hasken kasuwanci na LED sune DMX, DALI, 0/1-10V, thyristor (TRIAC), WIFI, Bluetooth, RF, da Zigbee. Waɗannan su ne siginonin shigar da wutar lantarki mai dusashewa. Zaɓin siginar shigarwa daban-daban yana da yawa saboda la'akari da yanayin (shigarwa, wayoyi), aiki, farashi, da sassaucin haɓakawa daga baya. Ingantacciyar tasirin dimming an ƙaddara ta hanyar hanyar rage ƙarfin fitarwa na isar da wutar lantarki, ba hanyar shigar da dimming ba.

Hanyoyin dimming na fitar da wutar lantarki sun kasu galibi zuwa nau'i biyu, Ci gaba da Rage Ragewa (CCR) da Pulse Width Modulation (PWM) (wanda kuma aka sani da Analog Dimming).

Na farko, wani bayani: a zahiri, duk LED tube ne dimmable.

Lokacin da kuke siyayya don fitilun LED na gama gari kamar kwararan fitila na A-style, galibi kuna iya ganin BA DIMMABLE da aka jera a ƙarƙashin bayanin samfurin. Wasu fitulun LED ba su da ƙarfi saboda wutar lantarki a cikin kwan fitilar LED ba a ƙera ta don fassara siginar dimming na dimmer ɗin bango ba, wanda, bi da bi, an yi shi ne/an yi shi don kwan fitila na gargajiya.

A daya bangaren, LED tube ba a tsara don a haɗa kai tsaye zuwa high ƙarfin lantarki (misali a 120V AC bango soket), da kuma bukatar da wutar lantarki don mayar da high ƙarfin lantarki AC zuwa ƙananan 12V ko 24V DC ƙarfin lantarki.

Don haka, idan dimmer na bango yana da hannu, dole ne ya fara "magana" ga wutar lantarki kafin duk wani dimming zai iya faruwa a tsiri na LED. Don haka, tambayar dimmable/ba dimmable ya dogara da sashin samar da wutar lantarki, kuma ko zai iya fassara siginar dimming da bango-dimmer ya samar.

A daya hannun, kusan duk LED tube (kamar a cikin, tsiri kanta) ne dimmable. Idan aka ba da siginar wutar lantarki ta DC da ta dace (yawanci PWM), kowane haske tsiri na LED ana iya daidaita shi cikin yardar kaina.

Lura cewa gabaɗaya akwai nau'ikan ledoji iri biyu akan kasuwa, m halin yanzu kuma akai-akai irin ƙarfin lantarki. Abubuwan da suke buƙata don rage wutar lantarki sun bambanta. Da fatan za a koma ga teburin da ke ƙasa:

Menene ke sarrafa hasken LED?

Adadin halin yanzu da ke gudana ta hanyar LED yana ƙayyade haskensa. Idan muka kalli jadawali da ke sama, za mu ga cewa canza wutar lantarki kuma tana canza wutar lantarki ta hanyar LED, yana sa mu yi tunanin rage hasken LED ta hanyar ƙara ko rage ƙarfin lantarki a cikinsa. Duk da haka, muna iya ganin cewa yankin da za mu iya canza wutar lantarki ba tare da samun yawan wutar lantarki ba kadan ne. Har ila yau, halin yanzu ba shi da tsinkaya, kamar haske.

Idan muka duba wasu takaddun bayanan LED, za mu iya ganin cewa hasken haske na LED ya dogara da halin yanzu. Dangantakar su kusan layi ce kuma. Don haka a cikin ɗimbin LEDs, muna ɗaukar ƙarfin wutar lantarki na gaba azaman ƙayyadaddun ƙima kuma muna sarrafa halin yanzu maimakon.

Hanyoyin Dimming LED

Duk na'urorin LED suna buƙatar dimming direba, kuma akwai daidaitattun hanyoyi guda biyu da direbobi ke amfani da su don rage LEDs: Pulse Width Modulation da Constant Current Reduction (wanda kuma aka sani da Analog Dimming).

Warfin Maganin Pulse (PWM)

A cikin PWM, LED ɗin yana kunnawa da KASHE a ƙimar sa na yanzu a babban mitar. Saurin saurin sauyawa yana da girma sosai don idon ɗan adam ya gani. Abin da ke ƙayyadadden matakin haske na LED shine zagayowar wajibi ko rabon lokacin da LED ɗin ke ON da jimillar lokacin zagaye ɗaya cikakke.

abũbuwan amfãni:

• Yana ba da madaidaicin matakin fitarwa
• Ya dace da aikace-aikacen da ke buƙatar kula da wasu halaye na LED kamar launi, zazzabi, ko inganci
• Faɗin raguwa - na iya rage fitowar haske zuwa ƙimar ƙasa da kashi 1
• Guji sauyin launi ta hanyar aiki da LED a wurin da aka ba da shawarar tura wutar lantarki/gaba da aiki na yanzu

disadvantages:

• Direbobi suna da rikitarwa da tsada
• Tunda PWM yana amfani da saurin sauyawa, saurin tashi mai sauri da faɗuwar gefen kowane sake zagayowar yana haifar da radiyon EMI maras so.
• Direba na iya samun matsalolin aiki lokacin da yake gudana tare da dogayen wayoyi tunda ɓatattun halaye na waya (ƙarfin ƙarfi da inductance) na iya tsoma baki tare da saurin gefuna na PWM

Abinda ke Bukatar

Kalmar sake zagayowar wajibi tana bayyana rabon 'kan' lokaci zuwa tazara na yau da kullun ko 'lokaci' na lokaci; ƙananan sake zagayowar aiki yayi daidai da ƙarancin wuta, saboda wutar tana kashe yawancin lokaci. Ana bayyana sake zagayowar aiki a cikin kashi, 100% yana kunne sosai. Lokacin da siginar dijital ta kasance a kan rabin lokaci kuma a kashe sauran rabin lokaci, siginar dijital tana da aikin sake zagayowar 50% kuma yayi kama da kalaman "square". Lokacin da siginar dijital ta ciyar da ƙarin lokaci a cikin jihar fiye da kashe jihar, tana da aikin sake zagayowar> 50%. Lokacin da siginar dijital ta ciyar da ƙarin lokaci a cikin kashe jihar fiye da na kan jihar, tana da aikin sake zagayowar <50%. Anan ga hoto wanda ke kwatanta waɗannan yanayi guda uku:

Frequency

Wani muhimmin al'amari na siginar bugun nisa (PWM) shine mitar sa. Mitar PWM tana ƙayyadaddun saurin siginar PWM ke cika lokaci, inda lokacin shine lokacin da aka ɗauka don kunnawa da kashe siginar.

Daidaita sake zagayowar aiki da mitar siginar PWM yana haifar da yuwuwar direban LED mai dimmable.

Rage Rage Cigaba (CCR)

A cikin CCR, halin yanzu yana gudana ta hanyar LED. Don haka LED ɗin koyaushe yana ON, ba kamar a cikin PWM ba inda kullun LED ke kunnawa da KASHE. Hasken LED yana bambanta ta hanyar canza matakin yanzu.

abũbuwan amfãni:

• Ana iya amfani da aikace-aikace tare da ƙaƙƙarfan buƙatun EMI da aikace-aikacen nesa inda ake amfani da dogon wayoyi
• Direbobin CCR suna da ƙimar ƙarfin fitarwa mafi girma (60V) fiye da direbobi waɗanda ke amfani da PWM (24.8 V) lokacin da aka rarraba su azaman direbobin UL Class 2 don busassun wurare da bushewa.

disadvantages:

• CCR bai dace da aikace-aikace ba inda ake son rage matakan haske ƙasa da kashi 10 saboda a ƙananan igiyoyin ruwa, LEDs ba sa aiki da kyau kuma fitowar hasken na iya zama mara kyau.
• Ƙananan igiyoyin motsi na iya haifar da launi mara daidaituwa

DMX512 Dimming

BA-512 mizani ne na cibiyoyin sadarwar dijital waɗanda aka fi amfani da su don sarrafa haske da tasiri. An yi niyya ne ta asali azaman ƙayyadaddun hanya don sarrafa matakan hasken wuta, wanda, kafin DMX512, ya yi amfani da ka'idojin mallakar mallaka iri-iri marasa jituwa. Nan da nan ya zama hanya ta farko don haɗa masu sarrafawa (kamar na'ura mai walƙiya) zuwa dimmers da na'urori masu tasiri na musamman kamar injin hazo da fitillu masu hankali.

DMX512 kuma ya faɗaɗa don amfani da shi a cikin da ba na wasan kwaikwayo ba da hasken gine-gine, a ma'auni masu kama da fitilun Kirsimeti zuwa allunan tallace-tallace na lantarki da filin wasa ko kide-kiden fage. Ana iya amfani da shi yanzu don sarrafa kusan komai, yana nuna shahararsa a kowane nau'in wurare.

DALI Dimming

Motar Hasken Lantarki na Lambobi (DALI) ta samo asali ne daga Turai kuma an aiwatar da shi sosai tsawon shekaru da yawa a wannan yanki na duniya. Yanzu haka yana ƙara shahara a Amurka. Ma'auni na DALI yana ba da izinin sarrafa dijital na daidaitattun ɗaiɗaikun ɗaiɗaiku ta hanyar ƙayyadaddun ƙa'idar sadarwa ta ƙarancin wutar lantarki wanda zai iya aika bayanai zuwa na'urori masu haske yayin da suke karɓar bayanai daga kayan aiki, yin wannan kayan aiki mai mahimmanci don gina tsarin kula da bayanai da sarrafa haɗin kai. DALI yana ba da damar magance abubuwan daidaitawa guda ɗaya, tare da adireshi har zuwa 64 waɗanda za a iya tsara su zuwa yankuna 16 daban-daban. Sadarwar DALI ba ta da hankali, kuma ana iya daidaita tsarin haɗin kai iri-iri tare da wannan yarjejeniya. Ana nuna zanen waya na DALI na yau da kullun a ƙasa:

0/1-10V Dimming

Tsarin siginar sarrafa hasken lantarki na farko da mafi sauƙi, ƙarancin wutar lantarki 0-10V dimmers, yi amfani da siginar ƙarancin wutar lantarki 0-10V DC da aka haɗa da kowane wutar lantarki na LED ko Fluorescent ballast. A 0 Volts, na'urar za ta dusashe zuwa mafi ƙarancin matakin haske wanda direban mai ragewa ya yarda, kuma a 10 Volts na'urar za ta yi aiki a 100%. Ana nuna zane na waya na 0-10V na yau da kullun a ƙasa:

TRIAC Dimming

TRIAC yana nufin Triode don Alternating Current, kuma shine mai canzawa wanda ake amfani dashi don sarrafa iko. Lokacin amfani da aikace-aikacen hasken wuta, ana kiransa da yawa 'TRIAC dimming'.

Ana amfani da da'irar TRIAC sosai kuma ana amfani da su sosai a aikace-aikacen sarrafa wutar lantarki. Waɗannan da'irori za su iya canza babban ƙarfin lantarki da manyan matakan halin yanzu a cikin sassa biyu na tsarin igiyar igiyar AC. Na'urorin semiconductor ne, kama da diode.
Ana amfani da TRIAC sau da yawa azaman hanyar dimming haske a aikace-aikacen hasken gida kuma yana iya zama ma a matsayin ikon sarrafa wuta a cikin injina.

Ƙarfin TRIAC don canza manyan ƙarfin lantarki ya sa ya dace don amfani a aikace-aikacen sarrafa wutar lantarki daban-daban. Wannan yana nufin yana iya aiki don dacewa da bukatun sarrafa hasken yau da kullun. Ana amfani da da'irar TRIAC don fiye da hasken gida kawai, kodayake. Ana kuma amfani da su lokacin sarrafa magoya baya da ƙananan motoci da sauran aikace-aikacen sauya AC da sarrafawa.
Idan kuna neman sarrafawa mai amfani da yawa, muna da tabbacin za ku sami TRIAC yarjejeniya mai fa'ida.

TRIAC babban ƙarfin lantarki ne (~ 230v) dimming. Wayar da tsarin TRIAC zuwa wadatar kayan sadarwar ku (tsakanin 100-240v AC), zaku iya samun tasirin dimming da kuke buƙata.

RF Dimming

Dimming mitar rediyo (RF) yana amfani da siginar mitar rediyo don sadarwa tare da mai sarrafa LED don rage launin fitilun LED ɗin ku.

Bluetooth, WIFI, Zigbee Dimming

Bluetooth mizanin fasahar mara waya ta gajeriyar hanya ce da ake amfani da ita don musayar bayanai tsakanin kafaffen na'urorin hannu da na hannu a kan gajeriyar tazara ta amfani da raƙuman radiyon UHF a cikin makaɗaɗɗen ISM, daga 2.402 GHz zuwa 2.48 GHz, da gina hanyoyin sadarwa na yanki (PANs). Ana amfani da shi galibi azaman madadin haɗin waya, don musayar fayiloli tsakanin na'urori masu ɗaukar hoto da ke kusa da haɗa wayoyin hannu da masu kunna kiɗa tare da belun kunne mara waya. A cikin yanayin da aka fi amfani da shi, ikon watsawa yana iyakance ga milliwatts 2.5, yana ba shi gajeriyar kewayon har zuwa mita 10 (33 ft).

Wi-Fi ko WiFi (/ ˈwaɪfaɪ/), iyali ne na ka'idojin cibiyar sadarwa mara waya, bisa tushen IEEE 802.11 iyali na ma'auni, waɗanda aka fi amfani da su don sadarwar yanki na na'urori da hanyar Intanet, barin na'urorin dijital na kusa don musayar bayanai ta igiyoyin rediyo. Waɗannan su ne cibiyoyin sadarwar kwamfuta da aka fi amfani da su a duniya, ana amfani da su a duk duniya a cikin gida da ƙananan hanyoyin sadarwa na ofis don haɗa kwamfutocin tebur da kwamfutar tafi-da-gidanka, kwamfutocin kwamfutar hannu, wayoyi, smart TVs, printers, da lasifika masu wayo tare da na'ura mai ba da hanya tsakanin hanyoyin sadarwa don haɗa su zuwa. Intanet, da kuma a wuraren shiga mara waya a wuraren jama'a kamar shagunan kofi, otal-otal, dakunan karatu da filayen jirgin sama don samar da hanyar Intanet ga jama'a don na'urorin hannu.

Sadarwa ƙayyadaddun tushen IEEE 802.15.4 ne don rukunin manyan ka'idojin sadarwa da ake amfani da su don ƙirƙirar cibiyoyin sadarwar yanki na sirri tare da ƙananan radiyo na dijital mara ƙarfi, kamar na sarrafa gida, tattara bayanan na'urar likitanci, da sauran ƙarancin ƙarfi. -Buƙatun bandwidth, tsara don ƙananan ayyuka waɗanda ke buƙatar haɗin mara waya. Don haka, Zigbee ƙaramin ƙarfi ne, ƙarancin bayanai, da kusanci (watau yanki na sirri) cibiyar sadarwar ad hoc mara waya.

Kammalawa Karshe

Duk filayen LED suna dimmable. Amma don Allah a lura akwai nau'ikan nau'ikan LED guda biyu, madaurin wutar lantarki na yau da kullun, da madaurin jagora na yanzu. Dole ne a yi amfani da tsiri mai jagora na yau da kullun tare da siginar fitarwa na PWM dimmable led tsiri! Don madaurin wutar lantarki na LED tube, za ka iya zaɓar PWM ko CCR fitarwa siginar dimming samar da wutar lantarki bisa ga aikin ta bukatun. Kuma akwai siginonin shigarwa da yawa, kamar DMX512, DALI, 0/1-10V, TRIAC, WIFI, Bluetooth, RF, da Zigbee.
Kuna iya zaɓar siginar shigarwar da ta dace ta la'akari da yanayin (shigarwa, wayoyi), aiki, farashi, da sassaucin faɗaɗa daga baya.

LEDYi yana kera inganci mai inganci LED tube da LED neon flex. Duk samfuranmu suna tafiya ta cikin dakunan gwaje-gwaje masu fasaha don tabbatar da mafi kyawun inganci. Bayan haka, muna ba da zaɓuɓɓukan da za a iya daidaita su akan filayen LED ɗinmu da lanƙwasa neon. Don haka, don ɗigon LED mai ƙima da LED neon flex, lamba LEDY ASAP!