PWM na CCR Dimming: Nubuhe buryo bwa LED bwo gutwara ibinyabiziga bwiza?

Yaba PWM cyangwa CCR dimming yatsinze buri rubanza. Uburyo bwiza buterwa no gusaba kwawe. Uku kugereranya kwa pwm na ccr dimming ikubiyemo guhindagurika, gukora neza, gutuza amabara, igiciro, no guhuza. Urabona kandi ubuyobozi bufatika buyobora kurangiza.

PWM ihindura LED kuri no kuzimya kuri frequency nyinshi, mugihe CCR (Constant Current Reduction) ikomeza kugabanya urumuri rwa LED. Kubushoferi bwa LED butagaragara, guhitamo hagati ya PWM na CCR bigira ingaruka kumikorere, guhindagurika kwamabara, ubujyakuzimu bwimbitse, imyitwarire yubushyuhe, hamwe na sisitemu.

Nta buryo na bumwe ari bwiza kuri bose. Uburyo bwiza bwo gucana biterwa nuburemere bwa LED, urwego ruciriritse rusabwa, uburyo bwo kugenzura, ibidukikije bimurika, nibisabwa. Imyanya imwe ikenera zeru ya kamera n'amaso. Abandi bakeneye gucengera cyane kuri bije. Igisubizo cyawe cyicaye muribyo bisobanuro, ntabwo biri mubatsinze.

Ibyingenzi

• PWM dimming ihindura LED kandi ikazimya vuba, mugihe CCR igabanya umuvuduko w'amashanyarazi muburyo bworoshye.

• PWM dimming irashobora gutanga urumuri rwigihe gito, mugihe CCR itanga modulisiyo yo hasi kuva uburyo bwo gucana ubwabwo. Nyamara, muri rusange imikorere ya flicker iterwa nubushakashatsi bwuzuye bwa LED.

• PWM dimming ituma ibara rimwe, ariko CCR dimming irashobora gutuma amabara ashyuha nkuko ubyibushye.

• Abashoferi ba PWM bagura make kandi bakorana nabagenzuzi benshi, ariko abashoferi ba CCR bakeneye ibice byinshi no kugenzura ubushyuhe.

• Tora CCR ahantu hunvikana cyane, nkibitaro. Hitamo kandi kubikorwa aho ibara rifite akamaro, nka sitidiyo.

• Koresha PWM kumishinga ihendutse cyangwa mugihe ukeneye umucyo muto cyane munsi ya 10%.

• Abashoferi ba Hybrid bahuza uburyo bwombi kugirango bagabanye flicker kandi bazamure intera igaragara.

• Buri gihe ugenzure ko dimmer yawe ikorana na LED umushoferi kugirango wirinde guhindagurika cyangwa gusakuza hamwe na TRIAC ishaje.

Uburyo PWM na CCR Dimming ikora

PWM Yibanze

PWM dimming isobanura ubugari bwa pulse. Ihindura LED kuri no kuzimya mugihe cyagenwe. Umushoferi agenzura igihe LED imara muri buri cyiciro. Icyo gice ku gihe cyitwa cycle cycle. 50% yumusoro usobanura ko LED iri kuri kimwe cya kabiri cyinzira. Ijisho ryawe rihuza uku kwihuta guhinduka murwego ruhoraho. Inshingano yinshingano ishyiraho urwego rwurumuri.

Kugenzura Inshingano

Isano iri hagati yinzira yumurimo no kubona umucyo ntabwo ari umurongo. Iyerekwa ryabantu ryakira urumuri muburyo butari umurongo. Inshingano ziciriritse zimaze kugaragara neza. Imbonerahamwe ikurikira irerekana iyi ngaruka.

Gukuraho neza kugihe cyinshingano kuva 0% kugeza 100% ntabwo bitera kuzamuka kugororotse kugaragara. Kuri 5% yumusoro, bigaragara ko umucyo urenga 20% yikirenga. Kuri 20% yumusoro, igera kuri 50% yikirenga. Gukosora gamma bikosora uku kudahuza. Ikoresha ihindagurika ryimyumvire igaragara yumucyo. Agaciro gasanzwe gama ni 2.2. Kugirango ubone icya kabiri cyumucyo, cycle yinshingano ni 0.5 ^ 2.2, bingana na 21.76%.

Kuri / Kuzimya

LED mumashanyarazi ya PWM ntizigera yicara kurwego rwubu. Ikora kumurongo wuzuye cyangwa zeru. Iki gikorwa cyo / kuzimya gikomeza LED kumwanya wacyo wagenwe mugihe cyagenwe. Guhindura inshuro ziguma hejuru bihagije kuburyo utabona pulses imwe. Urabona gusa impuzandengo yumucyo isohoka. Igishushanyo gituma PWM igabanuka byoroshye kugenzura hamwe nibimenyetso bya digitale.

CCR Yibanze

CCR dimming, nayo yitwa guhora igabanuka cyangwa kugereranya dimingi, ifata indi nzira. Uwiteka uyobora umushoferi afata imbere ya voltage ihagaze kandi igabanya imbere yimbere aho. Umucyo mwinshi biterwa nimbere igezweho, kandi iyi link ni hafi kumurongo. Ugabanya icyerekezo kiyobowe nubu, ntabwo ukata ibimenyetso.

Kugabanuka kumurongo

Mugukomeza kugabanuka kugabanuka, umushoferi akomeza kugabanuka kumurongo woherejwe. Imbere yimbere ihinduka hamwe nurwego rwo kugabanuka muburyo bworoshye, butajegajega. Nta guhinduranya ibintu bibaho. Umucyo usohoka ukurikira ikigezweho munsi yumurongo utinze. Ubu buryo ntabwo busabwa hepfo 10% gucogora . Mugihe gito cyane, ibitanda bikora nabi kandi byerekana urumuri rutateganijwe. Inzira ntoya irashobora kandi gutera ibara ritandukanye.

Amplitude Dimming

Amplitude dimming ihindura uburebure bwimiterere yubu aho kuba ubugari bwayo. Ubuyobozi bugumaho igihe cyose. Ibisohoka amplitude iragabanuka uko ucuramye. Iyi mikorere ihamye ihuza porogaramu zikeneye isoko yumucyo isukuye. Amatara ayoboye aguma ahoraho murwego rwo hejuru kuko ibiyobora biguma hejuru yakarere kadahagaze neza.

Itandukaniro ryimikorere

Guhindura umurongo

PWM dimming ikoresha amabwiriza yo guhinduranya. Umushoferi ayoboye ahindura ibisohoka no kuzimya vuba. CCR ikoresha umurongo. Umushoferi ayoboye ahindura neza urwego rwubu. Guhindura bikora ibisohoka. Amabwiriza agenga umurongo asohoka neza. Iri tandukaniro rimwe ritwara byinshi mubucuruzi hagati yuburyo bubiri.

Igishushanyo mbonera cyumushoferi

Iyobowe neza irashobora gushyigikira PWM cyangwa CCR, ariko ntabwo buri gihe byombi. Abashoferi ba PWM dimming bakeneye icyiciro cyo guhinduranya hamwe numugenzuzi ushyiraho urwego rwinshingano. Abashoferi ba CCR bakeneye umurongo ugenzura urwego ruhindura ikigezweho nta guhinduranya. Ibice bibiri byumuzunguruko bitandukanye muburyo bwo kubara, kwerekana ubushyuhe, no kugenzura. Guhitamo kwawe kwijimye rero gushiraho byose yayoboye igishushanyo mbonera , ntabwo ari ikimenyetso cyo kugenzura gusa.

Flicker muri PWM na CCR Dimming

PWM Dimming Flicker

Kugaragara-Umuvuduko muto

PWM dimming ihindura LED yawe kandi ikazimya inshuro nyinshi buri segonda. Ubugari bwa pulse modulasiyo ikora hagati ya 100 Hz na 400 Hz . Ijisho ryawe rirashobora kubona uku guhinduranya nka flicker, cyane cyane kumpera yicyerekezo cyawe. Imirongo iri munsi ya 80 Hz ihindura urumuri abantu bahagaze barashobora kubona byoroshye. Intera kuva 15 kugeza 20 Hz itera flicker ubona cyane. Munsi ya 70 Hz , flicker ituma bigora gusoma inyandiko no kubona amakuru meza. Umusomyi umwe yasobanuye neza ikibazo:

'Ndashobora kubikubwira amatara akubita byongera migraine yanjye . Ndetse na hertz 120 ziva mumatara ya fluorescent bizangiraho ingaruka ... Amatara ya LED ntabwo ari meza ... niyo yoroshye strobe. '

Hejuru ya 2kHz

Urashobora gutekereza ko igipimo cyihuta cyo guhindura gikosora byose. Ntabwo aribyo. Abantu barashobora kubona ibihangano bihindagurika kuri 500 Hz . Flicker kuri frequence igera kuri 2000 Hz irashobora kugaragara mugihe cyihuta cyamaso. Ingaruka ya stroboscopique mubisanzwe iba hagati ya 80 na 2000 Hz. Kubantu bamwe, igera kuri 10,000 Hz. Abashakashatsi bavuga ko inshuro ziri hejuru ya 3000 Hz kugirango birinde ingaruka ku mubiri. Uru rugabano rusunika abashoferi benshi ba PWM hanze ya flicker umutekano dimming range.

CCR Igikorwa Cyubusa

Nta Guhindura Ibintu

Kugabanuka guhoraho kugabanuka bihagarika iki kibazo aho cyaturutse. Umushoferi agabanya itangwa ryubu aho kuzimya itara no kuzimya. LED yawe ntishobora guhinduka vuba, ibisohoka rero bikomeza kugenda neza mugihe aho guhubuka. Nta guhinduranya ibintu bivuze ko nta guhuza flicker kandi nta bihangano bya stroboscopique. Uru rugendo ruhoraho rutanga CCR intsinzi isobanutse mubikorwa bya flicker.

Gukoresha Video na Kamera

Kamera yerekana guhindagurika amaso yawe yabuze. Kuzunguruka bifata urumuri rwo guhinduranya nkimigozi kuruhande. CCR ikuraho iki gihangano kuko urumuri rusohoka ntiruzunguruka. Ibidukikije byohejuru-bidafite aho bihurira , nkamatara yubuvuzi nifoto, biterwa nubu buryo. Kumurika igihe kirekire bimurika nabyo bifasha, kuva amashusho agabanuka iyo isoko igumye.

Ibintu byerekana ibyiyumvo

Imipaka yabantu

Ibyiyumvo byawe kuri flicker biterwa nibintu byinshi. Imbaraga zumucyo zifite akamaro: inshuro zikomeye flicker izamuka hamwe nubucyo, kuva kuri 22 kugeza kuri 25 Hz kurwego rwumucyo muke kugeza kuri 90 Hz murwego rwo hejuru. Kugirango werekane amashusho yimuka, flicker fusion yumuntu mubisanzwe iricara hagati ya 48 na 60 Hz . Ndetse na flicker itagaragara hejuru yimyumvire yawe irashobora gutera ingaruka mbi kubuzima no gusubiza ibibazo.

Imashini Iyerekwa

Ibikoresho bibona ukundi kubwawe. Ibipimo bya Electroretinogramu bitanga agaciro gakomeye ka flicker inshuro nyinshi kuruta ubushakashatsi bushingiye ku myitwarire, bwerekana imyumvire idasobanutse hejuru yimipaka. Inyoni zigera kure cyane kurenza abantu. Niba igenamiterere ryawe ririmo kamera, sensor, cyangwa igenzura ryikora, fata flicker nkikibazo cyo kureba imashini, ntabwo ari ikibazo cyumuntu gusa.

Uburyo bwiza bwa LED Driver Dimming Methods

Ubushobozi bwa PWM kuri Dimming

Kugabanuka Ku Gihombo

PWM dimming ituma LED yuzuye mugihe cyose kuri pulse. Igihombo cyimyitwarire guma hasi kuko the LED umushoferi amara umwanya muto atanga imbaraga nkuko ucuramye. Umusoro wa 20% bisobanura LED ikora kuri kimwe cya gatanu cyonyine. Guhindura igihombo bigumaho kimwe, bityo igihombo cyose kigabanuka uko umucyo ugabanuka. Ibi biha PWM gucuranga neza gutsindira neza kurwego rwo hasi. Kugereranya pwm na ccr kugereranya akenshi bitangirira hano, kuko imikorere kumusaruro muke nicyo gitandukanya uburyo bubiri.

Igikorwa gihamye

LED mumuzunguruko wa PWM ihora ikora kumurongo wateganijwe. Imiyoboro ihamye ituma LED ikora murwego rwayo rukora neza. Irinda imikorere mibi ituruka mugukoresha LED kumuyoboro muto cyane. Abashoferi ba PWM rero batanga imikorere ikomeye murwego rwagutse. Ubu buryo bwo gucana burinda kandi guhinduranya ibara rishobora kugaragara mugihe ibitonyanga biri hasi cyane.

Imikorere ya CCR kuri Dimming Ntoya

Kwiyongera kw'Abashoferi

Kugabanuka kwa CCR bigabanya ikigezweho binyuze muri LED. Umushoferi wa LED agomba guta voltage yinyongera kurwego rwayo rwo kugenzura. Iyo voltage yatakaye ihinduka ubushyuhe. Mugihe ucuramye cyane, voltage igabanuka hejuru yumushoferi iba nini. Igihombo cyabashoferi kizamuka cyane kurwego rwo hasi. Ibi bituma CCR igabanuka idakorwa neza kuruta PWM igabanuka mubikorwa byimbitse. Imikorere ihindagurika ya CCR iguma ari nziza, ariko imikorere ifata hit.

Ubushuhe

Ubushyuhe buva kumurongo butera ikibazo cyukuri. Ukeneye ubushyuhe bunini hamwe nubuyobozi bushya bwumuriro. Ubu bushyuhe nabwo bugira ingaruka kuri LED ubwayo. Ubushyuhe bwo hejuru bugabanya LED ubuzima bwose kandi burashobora guhindura ibara risohoka. CCR dimming rero ikeneye igishushanyo mbonera cyubushyuhe, cyane cyane mubikoresho bifunze. Ibishushanyo byinshi byayoboye biguma kure ya CCR kubwiyi mpamvu.

Ingingo zifatika

Iyo PWM Yatakaje

PWM dimming itakaza imikorere yayo kumurongo muke cyane. Guhindura igihombo bihinduka umugabane munini wigihombo cyose. Umushoferi aracyahindura kuri voltage yuzuye, buri kintu rero cyo guhindura cyangiza ingufu. Mugihe gito cyane cyinshingano, PWM dimming imikorere igabanuka muburyo ushobora kubona. Kwivanga kwa electromagnetic nabyo bikura kumurongo wohinduranya. Flicker irashobora kandi kugaragara kuriyi ntera ntoya.

Iyo CCR Yatakaje

CCR dimming itakaza inkombe igihe cyose itandukaniro rya voltage hagati yo gutanga na LED nini. Itandukaniro rihinduka ubushyuhe. CCR nayo irwanira munsi ya 10% gucogora, aho imikorere ya LED iba idateganijwe. Kubyimbye byimbitse hamwe nubushobozi buhanitse, dimingi ya PWM ikomeza guhitamo neza. Abashoferi babiri barashobora kugaragara kimwe, nyamara imyitwarire yabo idahwitse iratandukanye cyane.

Ibara rihoraho hamwe nubuziranenge bwumucyo

PWM na Shift y'amabara

Imyitwarire idahwitse ku gihe

PWM dimming ituma LED kumurongo wuzuye mugihe cyose kuri pulse. Ihuriro rya semiconductor riguma ku bushyuhe buhoraho hamwe n'ubucucike bw'abatwara. Ibi imikorere ihamye ituma imyuka ihumanya ikirere kimwe murwego rwuzuye. Ingingo yawe yera iguma aho washyizeho, nubwo umanura urumuri ruyobowe.

Ingaruka Ntoya Yinshingano

Imbonerahamwe ikurikira irerekana uburyo buri buryo bwo gucana bugira ingaruka kumabara nkuko ugenda uva mubisohoka byuzuye kugeza 1%.

PWM dimming ifata CCT muri ± 50K kandi igakomeza CRI muminota 2 yumusaruro wuzuye kuri 10%. Ikiyobora iguma ibara-rihamye kuko chip itigera isiga aho ikora.

CCR hamwe n'amabara ahamye

Umuyoboro uhoraho

CCR dimming igabanya icyerekezo gikomeza imbere aho. Kuri 10% gucogora, iyobowe ibona 10% yumurongo ugezweho. LED chromaticity ntabwo ikurikiza ikigezweho kumurongo ugororotse. Uburebure bwa pompe yubururu ihinduka 2-4 nm, fosifore ihinduka neza, kandi ingingo yera igenda ishyuha. Ubu ni physics, ntabwo ari inenge.

Birenze-CRI

CCR dimming ihindura CCT kubushyuhe 200-600K hanyuma igabanya CRI kumanota 5-15 kuri 10%. Iyo drift ituma CCR ikwiranye nakazi keza-CRI. Ibikoresho byashyizwe kuri CRI 95 kubisohoka byuzuye birashobora kugwa munsi yicyo kimenyetso uko ucuramye. Kubikorwa byamabara-bikomeye, iki gihombo cyibikorwa byayoboye birenze inyungu zunguka.

Ibara-Ibyingenzi Porogaramu

Sitidiyo n'amafoto

Studiyo ikeneye ubushyuhe buhamye bwamabara kuri buri mucyo urwego. PWM dimming itanga iyo stabilite. Ufotora arashobora kugabanuka kuva imbaraga zuzuye kugeza urumuri rwuzuye rutagira impinduka yera. Kugabanuka kwa CCR byasunika ibara risusurutse uko urumuri rugabanuka, guhatira uburinganire bushya bwera kuri buri rwego.

Ubuvuzi no Gucuruza

Amatara yubuvuzi hamwe no kugurisha nabyo biterwa ibara neza . Umuganga ubaga akeneye tissue kugirango asa kimwe kuri buri mucyo. Umucuruzi akenera umwenda utukura kugirango ugume umutuku munsi yumucyo wijimye. PWM dimming irinda izo manza zombi. CCR dimming itangiza ubushyuhe bushobora kwerekana nabi uruhu rwuruhu, amabara yigitambara, nibirango byibicuruzwa. Iyo amabara yizerwa atwara amahitamo yawe, dimingi ya PWM nuburyo bwiza bwo gucana.

Igiciro no Guhuza Abashoferi ba LED

Ikiguzi cya PWM

Igishushanyo Cyoroshye Cyumuzingi

PWM igabanya umushoferi igura make gukora kuruta umushoferi wa CCR. Umuzunguruko ukoresha icyiciro cyo guhinduranya hamwe nubugenzuzi bworoshye. Ntukeneye ubushyuhe bunini cyangwa gucunga neza ubushyuhe. Ibi bituma fagitire y'ibikoresho iba hasi. Umushoferi wa PWM dimming nawe akora akonje, bityo uzigama kubiciro byo gufunga. Kuri LED yamurika imishinga kuri bije, dimingi ya PWM niyo guhitamo bifatika.

Kugenzura Guhuza

PWM dimming abashoferi bakorana nabagenzuzi benshi batandukanye. Urashobora kubikoresha hamwe nibimenyetso bya digitale, microcontrollers, cyangwa moderi isanzwe ya dimmer. Ihinduka rituma PWM igabanuka byoroshye kongeramo ibishushanyo bishya. Abashoferi benshi ba PWM bagabanya ibimenyetso 0-10V, icyinjijwe cya PWM, cyangwa protocole ya aderesi ya digitale. Urabona amahitamo menshi adafite injeniyeri yihariye.

Ikiguzi cya CCR

Kugenzura umurongo

Umushoferi wa CCR LED akeneye umurongo wo kugenzura umurongo. Iki cyiciro kigabanya voltage yinyongera nkubushyuhe. Igishushanyo kigomba gukoresha ubwo bushyuhe hamwe nubushyuhe bunini hamwe nuburyo bwitondewe. Igenzura ryimyanya ihamye nayo yongeraho ibintu bigoye. Izi ngingo zisunika igiciro cyumushoferi wa CCR LED hejuru yumushoferi usa na PWM.

Kubara Ibigize

Abashoferi ba CCR bakoresha ibice byinshi kurenza PWM dimming. Ukeneye pass tristoriste, ibyiyumvo-bigezweho, hamwe nuburinzi bwumuriro. Buri gice cyongera ikiguzi kandi gifata umwanya wubuyobozi. Umushoferi wa PWM dimming yirinda byinshi muribi bice. Ibice byinshi byo kubara nabyo bigabanya kwizerwa kandi bizamura igihe cyo guterana.

Kwishyira hamwe kwa Sisitemu

Inkunga iriho

Uzahura nibibazo byo guhuza mugihe uhujije uburyo bwo gucana hamwe na feri ishaje-yaciwe. Imiyoboro ya TRIAC iyobora akenshi itera ibibazo kubashoferi ba PWM na CCR LED. Urashobora kubona guhindagurika iyo dimmer idashobora gutwara umutwaro. Buzzing cyangwa humming bibaho mugihe umusaza wa TRIAC dimmer yagonganye numushoferi wa LED. Urwego ruciriritse rushobora kandi kugabanuka kubera ko umushoferi wo hasi ntarengwa ahuye nibisohoka. Gushiraho bimwe bigabanuka kumurongo wo hejuru. Umucyo utaringaniye mubice byinshi byerekanwa kubushoferi budahuye cyangwa ibibazo byibura umutwaro. Ibi bibazo byerekanwe hamwe na PWM dimming na CCR dimming, reba rero dimmer ihuza mbere yo kugura.

Gusubiramo Ibitekerezo

Kuvugurura sisitemu iriho hamwe na PWM dimming ibisanzwe biroroshye. Urashobora kenshi kubika insinga zihari hanyuma ugasimbuza umushoferi gusa. Abashoferi ba CCR barashobora gukenera dimmer ninzira nini yubushyuhe. Buri gihe ugenzure ubwoko bwa dimmer n'umutwaro muto. Dimmer ihuza hamwe na LED ihuye neza bizaguha dimingi nziza, yizewe.

Igitabo Cyicyemezo Cyuburyo bwa Dimming

Ubu ufite ishusho yuzuye ya pwm na ccr dimming. Intambwe ikurikira ni guhuza uburyo n'umushinga wawe . Aka gatabo kanyuze mu ngingo zingenzi zicyemezo.

Igitabo Cyasubiwemo

Uburyo bwo Guhitamo Hagati ya PWM na CCR Dimming

Uburyo bwiza bwo gucana biterwa na LED yuzuye ya sisitemu na sisitemu yo kumurika kuruta kuri PWM cyangwa CCR yonyine.

Reba PWM Igihe

PWM irashobora kuba nziza mugihe porogaramu isaba intera yagutse, kugenzura neza imibare, cyangwa LED ikora neza mugihe gikwiye. Kumucyo wabigize umwuga, hitamo umushoferi ufite inshuro ya PWM ikwiye kandi igenzurwa neza.

Reba CCR Igihe

CCR irashobora kuba nziza mugihe ihinduka ryumucyo ryigihe gito cyane aribyingenzi kandi urwego rusabwa rwo kugabanuka rushobora kugerwaho nta guhinduranya amabara atemewe cyangwa gutakaza ubushyuhe. LED na shoferi bigomba gusuzumirwa hamwe murwego rwagenewe gukora.

Tekereza Hybrid Dimming

Igishushanyo cya Hybrid PWM + CCR kirashobora guhuza kugabanuka guhoraho kugabanuka kurwego rwo hejuru rusohoka hamwe na PWM igenzura kurwego rwo hasi. Ubu buryo burashobora gufasha kuringaniza imikorere ya flicker, guhuza amabara, gukora neza, hamwe nuburebure bwimbitse, bitewe nububiko bwubushoferi.

Kubushoferi bwa LED butagaragara, nanone tekereza kugenzura kugenzura, ubwoko bwumutwaro wa LED, CV cyangwa CC ibisohoka, umutwaro muto, urwego ruciriritse, imiterere yubushyuhe, nibisabwa bisabwa mbere yo guhitamo umushoferi.

Igihe cyo Guhitamo PWM

Igiciro-Cyunvikana Imishinga

Abashoferi ba PWM dimming bagura make kubaka no gushiraho. Umuzunguruko ukoresha ibice bike kandi ntukeneye ubushyuhe bunini. Uzigama kuri fagitire y'ibikoresho no ku giciro cyo gufunga. Abashoferi ba PWM dimming nabo bakorana nabagenzuzi benshi, nkibimenyetso 0-10V, microcontrollers, na protocole ya digitale. Kubikorwa byingengo yimari iyobowe numucyo, pwm dimming nigikorwa gifatika.

Kwaguka kwagutse

PWM dimming ituma imikorere yayo igaragara kurwego rwo hasi. Ubuyobozi bukora kumurongo wuzuye mugihe buri kuri pulse, bityo igihombo cyumuvuduko kigabanuka uko ucuramye. Ibi biguha intera yagutse ikoreshwa. CCR irwanira munsi ya 10% gucogora, aho imikorere iyobowe iba idateganijwe. Niba ukeneye gucura cyane hamwe nubushobozi buhamye, abashoferi ba pwm batanga ibisubizo byiza.

Uburyo bwa Hybrid na Adaptive

PWM hamwe na CCR

Ibishushanyo bishya byayoboye bivanga uburyo bwombi muri sisitemu imwe. CCR ikora neza-mucyo-karere , aho bisanzwe birinda guhindagurika. PWM ifata kumurongo wo hasi kugirango yongere intera ikoreshwa. Ubu buryo bwa Hybrid butwara imipaka imwe muburyo bwombi. Ntabwo ikemura neza ibibazo bihindagurika kandi bihoraho, cyane cyane iyo bigaragara ko umucyo ufite akamaro kuruta urumuri rwapimwe. Biracyaza, igishushanyo gihuza imbaraga za buri buryo bwo gukora neza muri rusange.

Urugero rumwe ruva muri Meteor. Umwanya wabo wo gutwara ibinyabiziga uhuza CCR nziza kandi igenzura neza PWM kugirango igabanye flicker itagaragara. Itanga dimingi ihamye yo gufata amashusho yihuta kugeza 960 fps. Ottima Tech isobanura ingamba zisa: igereranya ryagabanutse mukarere keza cyane hamwe na PWM yumurongo mwinshi mukarere gake. Ibi bikomeza gucogora neza no guhuza amabara murwego rwose.

Sisitemu yo gutwara ibinyabiziga

Ubucuruzi bwubucuruzi IC ubu bushyira mubikorwa gahunda ya Hybrid muri silicon. Dior Inc. AL5887Q numuyoboro wa 36, ​​umushoferi-urwego rwimodoka. Ihuza Hybrid PWM hamwe na analog (CCR) dimming. PWM dimming itwikiriye 100% kugeza kuri 3% byinshingano . Munsi ya 3%, chip ihindura gahunda igenzurwa na digitale igera kuri CCR ihwanye na dimming. Ntabwo aribisanzwe gakondo CCR, ariko itanga ingaruka zimwe. Imipira nkiyi yerekana aho isoko igana: sisitemu yo guhuza n'imikorere itoranya uburyo bwiza bwo gucana kuri buri rwego rwumucyo.

Guhitamo kwawe biracyafite akamaro. Kubikorwa bya flicker-byoroshye cyangwa ibara-akazi, hitamo CCR. Kubikorwa byoroheje-byimishinga cyangwa intera yagutse, hitamo PWM. Kubintu byose hagati, abashoferi bavanga batanga inzira yo hagati. Banza usuzume ibyifuzo byawe. Uburyo bwiza bwo gucana bukurikiza ibyo ukeneye, ntabwo biva mubyifuzo bisanzwe.

PWM itsindira imikorere kandi yagutse. CCR itsinze kuri flicker-free, ibara-rihamye risohoka.

Hitamo CCR kubikorwa byoroshye cyangwa amabara-akomeye. Hitamo PWM kumishinga-yorohereza ibiciro cyangwa gucura cyane. Banza ugerageze ibyo usabwa.

Abashoferi ba Hybrid bavanga PWM na CCR. Bahindura uburyo uko umucyo uhinduka. Ibi bigabanya guhindagurika no kwagura intera. PWM ikora ibisohoka bike; CCR ikora ibisohoka cyane. Hamwe hamwe bigabanya ibyago byo guhindagurika. PWM ihindagurika kumurimo muke hamwe na CCR ihindagurika kumurongo mwinshi byombi bifite akamaro. PWM flicker iva muguhindura; CCR flicker iguma idahari. PWM iracyatsinda kubiciro. PWM flicker na CCR flicker biratandukanye. PWM flicker ikeneye kwitabwaho no kwipimisha PWM. CCR flicker iguma hasi. Ikoranabuhanga ryabashoferi rikomeza gutera imbere.

Ibibazo

Ni ubuhe buryo bwo gucogora butera guhindagurika?

Kugabanuka kwa PWM bitera guhindagurika kuko umushoferi azimya LED ikazimya. Imirongo iri hagati ya 80 Hz na 2000 Hz itera ingaruka zigaragara za stroboskopi. Kugabanuka kwa CCR nta guhinduranya ibintu, bityo urumuri rusohoka ruguma ruhagaze. Umwanya wunvikana kuri flicker, CCR niyo guhitamo neza.

Nshobora gukoresha PWM dimming yo gufata amashusho?

Urashobora, ariko ukeneye inshuro nyinshi zo guhinduranya. Abashoferi ba pwm basanzwe bakora hagati ya 100 Hz na 400 Hz, kamera zifata nka bande. Imirongo iri hejuru ya Hz 3.000 igabanya ibi bihangano. Kugabanuka kwa CCR birinda ikibazo rwose kuko ikigezweho nticyigera gihinduka.

Ese dimingi ya CCR ihindura ibara ryurumuri rwanjye LED?

Yego. CCR dimming ihindura ubushyuhe bwamabara 200-600K ubushyuhe kuri 10%. CRI nayo igabanuka amanota 5-15. PWM dimming ifata CCT muri K 50K kandi igakomeza CRI itajegajega. Kubikorwa byamabara akomeye, pwm dimming irinda ingingo yawe yera kurwego rwo hejuru.

Nubuhe buryo buhendutse kubashoferi ba LED?

Abashoferi ba PWM bagura make. Umuzunguruko ukoresha ibice bike kandi ntukeneye ubushyuhe bunini. Abashoferi ba CCR bakeneye amabwiriza agenga umurongo, pass transistors, hamwe numuzunguruko wumuriro. Ibyo bice byongera ikiguzi n'umwanya wibibaho. Ku mishinga itwarwa ningengo yimari, pwm dimming niyo gutoranya bifatika.

Ni ubuhe burebure nshobora gucogora kuri buri buryo?

PWM dimming ikora neza murwego runini, ndetse no munsi ya 1% yinshingano. Kugabanuka kwa CCR kurwanira munsi ya 10%, aho LED ikora iba idateganijwe. Niba ukeneye gucengera cyane hamwe nubushobozi buhamye, abashoferi ba pwm batanga ibisubizo byiza.

Kuvangavanga ni iki?

Abashoferi ba Hybrid bavanga uburyo bwombi hamwe. CCR ikora umucyo mwinshi, aho irinda guhindagurika. PWM ifata urumuri ruke kugirango yongere intera igabanutse. Ubu buryo bugabanya ibyago byoroshye kandi bitezimbere amabara. Ubucuruzi bwubucuruzi IC ubu bubaka gahunda ya Hybrid muri silicon.

Dimmers ya TRIAC ishaje ikorana nabashoferi?

Ubwo buryo bwombi burashobora kugira ikibazo hamwe nuyobora-TRIAC dimmers. Urashobora kubona guhindagurika, gusakuza, cyangwa kugabanuka kugabanuka. Reba dimmer guhuza mbere yo kugura. Dimmer ihuye na shoferi itanga neza, yizewe.

Nubuhe buryo bukwiranye no kumurika ubuvuzi?

CCR ikwiranye nubuvuzi kuko idatanga flicker. Ibitaro bikeneye urumuri ruhoraho kugirango abarwayi bahumurizwe kandi bibande ku bakozi. Sisitemu ya DALI na 0-10V itanga igenzura ridafite flicker. Kugabanuka kwa PWM birashobora gutera amaso muri ibi bidukikije.