Kuthwanima ndi imodzi mwamavuto omwe amapezeka kwambiri ndi mizere ya LED. Powerenga nkhaniyi, muphunzira za mitundu ya kuthwanima, zomwe zimayambitsa kuthwanima, komanso momwe mungakonzere kuthwanima.
Tiyeni tiyambe.
Kodi Mitundu Yosiyanasiyana ya Flickering Ndi Chiyani?
Flicker ndi kuzungulira kwachangu / kuzimitsa kwa gwero la kuwala. Itha kukhala dala (kalabu yausiku kapena kung'anima kwa konsati), koma nthawi zambiri, zimangokhala zosokoneza.
Pali mitundu iwiri ya zonyezimira: zowoneka ndi zosawoneka. Kuwuluka kowoneka ndi chilichonse chokhala ndi ma frequency ochepera 100 Hz (ie, ka 100 pa sekondi kapena kuchepera). Kuthwanima kosaoneka kumachitika pamwamba pa 100 Hz ndipo sikuwoneka ndi maso athu pamene kulipo. Mitundu yonse iwiri ya kugwedezeka ndi yopanda thanzi-zovuta zomwe zimachitika nthawi zambiri zimaphatikizapo chizungulire, maso, kupweteka mutu, migraines, ndi kusokonezeka kwa chidziwitso. Visible flicker imathanso kuyambitsa khunyu mwa anthu omwe ali ndi khunyu.
Kodi Zomwe Zimayambitsa Kuwala kwa Mzere wa LED ndi Chiyani?
Nazi zina zomwe zimayambitsa zowunikira za LED.
Zifukwa Zowoneka za Flicker
Malumikizidwe Osauka
Flicker imayamba (kapena imafika poipa kwambiri) pambuyo polumikizana. Chifukwa chachikulu ndikuti kulumikizana koyipa, kosagwirizana, kapena kwapang'onopang'ono kungayambitse kunjenjemera popanga ndi kuswa mabwalo. Zimachitika makamaka mu zolumikizira zopanda malonda ndipo sizingachitike mu soldering.
Chowunikira cha LED chidzasintha kapena kuzimiririka mukakanikiza cholumikizira chopanda solder.
Zigawo Zosagwirizana
Izi zimachitika kawirikawiri pamene chingwe cha LED chazimitsidwa. Choyamba, muyenera kuwonetsetsa kuti mzere wanu wa LED ndi dalaivala zimathandizidwa kuti ziwonjezeke. Kenako, muyenera kuwonetsetsa kuti ma dimmer ndi ma protocol a driver amagwirizana. Mwachitsanzo, simungagwiritse ntchito dimmer ya 0-10V yokhala ndi dalaivala wa DALI dimming.
Magetsi Odzaza kapena Osokonekera
Kuchulukirachulukira kwa dalaivala wa LED ndi chimodzi mwazinthu zomwe zimayambitsa kufiyira kwa Mzere wa LED.
Madalaivala a LED nthawi zambiri amakhala ndi chitetezo chochulukirapo. Mukadzaza kwambiri, dalaivala wa LED amakhala akuyatsa ndikuzimitsa nthawi zonse. Kenako mzere wa LED udzakhalanso woyaka ndi kuzimitsidwa nthawi zonse, kotero ikuwoneka ngati ikugwedezeka.
Dalaivala yolakwika ya LED imatha, nthawi zina, imapangitsanso kuti mzere wa LED uziyenda.
Mzere Wolakwika wa LED
Mzere wa LED nthawi zina umagwa chifukwa mzere wa LED ndi wolakwika.
Nthawi zambiri, ndikulumikizana koyipa pakati pa chipangizo cha LED ndi chogwirizira.
Pachithunzichi pansipa, mutha kuwona mawonekedwe amkati a mikanda ya SMD LED. Gawo lomwe limatulutsa kuwala ndi chipangizo cha LED, ndipo chipangizo cha LED chimalumikizidwa ndi chotengera cha LED ndi waya wagolide. Chip cha LED ndi bulaketi zikapanda kulumikizidwa bwino, magetsi amatha kudutsa ndipo nthawi zina osatero, ndipo nyali ya LED imanjenjemera.
Poyerekeza ndi ma LED a SMD, ma CSP ndi COB LED alibe mawaya agolide ndipo amatha kupewa vutoli. Kuti mudziwe zambiri, chonde werengani CSP LED Strip VS COB LED Mzere.
Palinso zochitika pomwe mikanda ya LED ndi ma PCB samagulitsidwa bwino. Mukapeza kuti gawo linalake la chingwe cha LED likuthwanima, mumakanikiza gawo ili la LED ndi dzanja lanu. Chophimbacho chikhoza kusintha kapena kutha.
Zomwe Zimayambitsa Zosawoneka
Mwina mukuwona mizere yoyima pazithunzi za kamera ya foni yanu yam'manja ndikuwona kusuntha kwa zinthu zomwe zikuyenda, chodabwitsa choyambitsidwa ndi strobe yosaoneka.
AC Mphamvu ya LED Mzere
Magetsi amagetsi amazima chifukwa magetsi ambiri padziko lapansi amatumizidwa kudzera pa alternating current (AC). Monga dzina lake limatanthawuzira, AC imasintha mayendedwe ake ーー imayenda mbali imodzi kenako imatembenuka pamlingo wa 50 mpaka 60 pa sekondi iliyonse. Izi nthawi zambiri zimatenga mawonekedwe a sine wave. Komabe, Direct current (DC) ndiyokhazikika ndipo nthawi zonse imayenda mbali imodzi.
Pamene magetsi akuyenda molowera kwina, chilichonse cholumikizidwa pamzerewu chimataya mphamvu nthawi yomweyo. Chifukwa magetsi amayenda kwina kulikonse, magetsi onse amayaka.
Ichinso ndichifukwa chake chingwe cha AC champhamvu cha LED chikugwedezeka.
Kusintha kwa PWM
Kuwala kwa ma sign a PWM kumapanga zofewa zosawoneka.
PWM ndikupusitsa mwadala mphamvu za DC pakati pa mayiko omwe ali ndi mphamvu ndi kunja. Posintha nthawi yapakati pakati pa kuyatsa ndi kuzimitsa, PWM itha kugwiritsidwa ntchito kupanga malingaliro a kuwala kosiyana. Komabe, LED ndi 0% kapena 100% yowala. Kuti mukwaniritse chinyengo cha 50% kuwala, LED ndi theka la nthawi pa 0% kuwala (kuchoka) ndi theka la nthawi pa 100% kuwala (pa).
Kuthwanimaku sikukhala ndi vuto chifukwa sikuwoneka. Komabe, pojambulira kanema, zowoneka bwinozi zitha kukhala tsoka.
Kuwala komwe kukuwuluka mu kanema kumawonekera komanso kuwonekera chifukwa mafelemu a kamera pa sekondi imodzi (FPS) kujambula sikugwirizana ndi kuchuluka kwa magetsi. Izi zimadziwika kuti 'strobe effect'.
Pafupifupi ma dimmers onse a LED ndi owongolera "osintha mtundu" (CCT kapena RGB) omwe amayikidwa pamagetsi otsika a DC mbali ya dera amagwiritsa ntchito PWM kuti akwaniritse zomwe akufuna. Tsoka ilo, ma dimmers ambiri a PWM amagwiritsa ntchito ma frequency omwe ali otsika kwambiri. Mafupipafupi akuyenera kukhala 25,000 Hz kapena kupitilira apo kuti athetse mphamvu ya PWM flicker. Komabe, ma dimmers ambiri a PWM samaphatikiza ma frequency a PWM, omwe nthawi zambiri amawonetsa kuti amagwiritsa ntchito mafupipafupi mazana angapo Hz kwambiri.
Kuti mumve zambiri za kuwala kwa mizere ya LED, chonde werengani Momwe Mungayimitsire Magetsi a Mzere wa LED.
Momwe Mungayimitsire Kuwala kwa Mizere ya LED kuti zisagwedezeke?
Potengera malingaliro otsatirawa, titha kupewa kuthwanima kwa mzere wa LED.
Zowoneka Flicker
Yang'anani Mgwirizano
Choyamba, tiyenera kuyang'ana maulumikizidwe onse, kuphatikizapo mawaya, zolumikizira, ndi madalaivala a LED, kuti tiwonetsetse kuti kulumikizana kuli bwino. Kulumikizana koyipa kumatha kuyambitsa kukana kwambiri, kutentha kwambiri, ndipo mwina kuyambitsa moto. Zachidziwikire, zipangitsanso kuti chingwe cha LED chiziyenda.
Sinthani Zigawo Zosagwirizana
Chachiwiri, ndikufunika kusintha zigawo zosagwirizana monga ma dimmers, madalaivala a LED, ndi zina zotero. Zigawo zosagwirizana kwambiri ndi dimmers ndi madalaivala a LED.
Sinthani Dalaivala ya LED
Bwezerani magetsi olakwika a LED, kapena gwiritsani ntchito magetsi ochulukirapo.
Chonde dziwani kuti ndizosatheka kugwiritsa ntchito madalaivala angapo a LED kuti mulumikizane ndi mzere umodzi wa LED pomwe mphamvu ya dalaivala ya LED siyikwanira. Chifukwa cha nthawi yosagwirizana yoyambira madalaivala a LED, dalaivala yemwe amayamba poyamba ndi mphamvu zosakwanira adzayambitsa chitetezo chokwanira, ndiyeno atseke ndikuyambiranso. Kenako madalaivala onse azingoyambira ndikutseka.
Sinthani Mizere Yolakwika ya LED
Pomaliza, muyenera kusintha mzere wolakwika wa LED. Mukaonetsetsa kuti kugwirizana kuli bwino, mbali zonse zimagwirizana, ndipo dalaivala wa LED ali bwino, pamapeto pake muyenera kusintha mzere wa LED.
Invisible Flicker
Gwiritsani Ntchito Magetsi a Low Voltage DC LED Strip Lights okhala ndi Madalaivala a LED
Timagwiritsa ntchito mizere yotsika yamagetsi ya LED komanso madalaivala apamwamba kwambiri a LED ngati kuli kotheka. Madalaivala a LED amasintha ma AC apamwamba kwambiri kukhala otsika-voltage okhazikika, motero amawonetsetsa kuti mizere ya LED isakhale yolimba.
Ngati mukufuna kumvetsetsa mtundu wotchuka wa driver wa LED mwachangu, mutha kuwerenga Mndandanda Wapamwamba Wopanga Ma Dalaivala a LED.
Gwiritsani Ntchito Dimming Power Supplies ndi CCR Output Signal
Njira zochepetsera zotulutsa mphamvu zamagetsi zimagawidwa m'mitundu iwiri, Constant Current Reduction (CCR) ndi Pulse Width Modulation (PWM) (yomwe imadziwikanso kuti Analog Dimming).
Mu CCR, magetsi akuyenda mosalekeza kudzera mu LED. Kotero LED imakhala ONSE nthawi zonse, osati monga mu PWM, kumene LED imayatsidwa nthawi zonse ndi KUZImitsa. Kuwala kwa LED kumasinthidwa ndikusintha mulingo wapano.
Gwiritsani Ntchito Dimming Power Supplies ndi High Frequency PWM Output Signal
Mu PWM, LED imayatsidwa ndikuzimitsa pakali pano pamlingo wapamwamba. Kusintha kofulumira kumakhala kokwanira kuti diso la munthu liwone. Chomwe chimatsimikizira kuchuluka kwa kuwala kwa LED ndi kuzungulira kwa ntchito kapena chiyerekezo cha nthawi yomwe LED ili ON ndi nthawi yonse ya kuzungulira kwathunthu.
Kamera yapamwamba imawona mafupipafupi a PWM, m'pamenenso imakhala yochepa kwambiri. Nthawi zambiri kuposa 25 kHz, kamera simatha kuwona kuthwanima.
Kutsiliza
Pomaliza, mikwingwirima ya LED imatha kukhala vuto lokhumudwitsa, koma mwamwayi, pali njira zingapo zosavuta zomwe zingakuthandizeni kukonza vutoli. Kuchokera pakuwunika mphamvu yamagetsi mpaka kusintha zina zolakwika, njira zothetsera vutoli zitha kukuthandizani kuzindikira ndi kuthetsa chomwe chikuyambitsa kunjenjemera. Kuphatikiza apo, kuchitapo kanthu kuti mupewe kugwedezeka kwamtsogolo, monga kugwiritsa ntchito zida zapamwamba komanso kuteteza bwino mizere yanu ya LED, kungakuthandizeni kupeŵa vutoli kwathunthu.
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