Ingozi yokukhanyisa ukukhanya

Ukusukela oko ukukhanya kwangena kwixesha lezibane ze-fluorescent, izibane ezihamba kunye nezibane bezigquma indawo yethu yokukhanya. Ngokuxhomekeke kumgaqo okhanyayo wezibane ze-fluorescent, ingxaki ye-flicker ayizange isombululwe kakuhle. Namhlanje, singene kwixesha lokukhanya kwe-LED, kodwa ingxaki yokukhanya kokukhanya isekhona.

Yintoni i-flicker

I-Flicker kukutshintsha kokuqina kokukhanya okanye ukukhanya ngexesha elithile. Ukukhanya kokukhanyisa kwenzeka kwizicelo ezininzi zokukhanyisa, kubandakanywa ukudubula okucothayo kwi-TV, ukukhanya kweendlela, iindawo ezahlukeneyo zokukhanyisa ngokubanzi kunye neendawo zokusebenza usebenzisa oomatshini abajikeleza ngokukhawuleza. I-Flicker iya kuchaphazela impilo yabantu, kwaye inqanaba leempembelelo lixhomekeke kubuninzi be-flicker kunye nobuntununtunu bomntu ukuze buphephe. I-flicker ephezulu ayiyi kuba nempembelelo ebalulekileyo kumzimba womntu, kodwa i-flicker ephantsi ye-flicker engaphantsi kwe-120 Hz kulula ukuchaphazela impilo yabantu.

Umsebenzi wobunzima bobuntununtunu beliso lokuqhwanyaza

Ingozi yokukhanyisa ukukhanya

I-Flicker yomthombo wokukhanya inxulumene ngokusondeleyo ne-migraine, intloko ebuhlungu, i-autism, ukukhathala kwamehlo, ukungaboni kakuhle kunye nezinye izifo ze-neurological. Uphononongo lubonise ukuba i-low-frequency, uluhlu lwe-3-70Hz scintillation umthombo wokukhanya kunokubangela i-photosensitive epilepsy kubantu abathile abanovelwano; I-100Hz i-flicker frequency yachongwa ukuba ibangele intloko kunye ne-migraine; 120Hz Umthombo wokukhanya odanyazayo unokuchaphazela umoya wabantu, njengokukruquka kunye nokuxhalaba. Ukukhohlisa okubonwayo okubangelwa yimpembelelo ye-flicker kunye nentshukumo ehambelana noomatshini kuyingozi kakhulu kwiindawo zoshishino. Ngoko ke, ukulinganisa ngokuchanekileyo kunye nokuvavanya iimpawu ze-flicker zeemveliso zokukhanyisa zihambelana ngqo nempilo yabantu, okuyingxaki engxamisekileyo ukuba isonjululwe.

Iimbangela ze-flicker

Izizathu zokukhanya kwezibane ze-LED azibandakanyi kuphela izinto zokubonelela umbane, kodwa kunye nezinto zokusebenza kobugcisa bomthombo wokukhanya kunye noyilo olungenangqiqo. I-Ripple current yenye yezona zinto zibalulekileyo ezibangela i-flicker kumbane wezibane ezininzi zokukhanyisa. I-Ripple yangoku yinxalenye ye-AC esekho emva kokulungiswa kunye nokucoca. I-Ripple yangoku ibekwe phezulu kwi-DC kwaye ine-frequencies eyahlukeneyo kunye ne-curves. Eli candelo le-AC lenza amandla emodyuli ye-LED aguquguquke, nto leyo eya kutshintsha ukukhanya. Ubuninzi kunye nokuphindaphinda kwe-AC ebekwe phezulu zizinto ezithatha isigqibo sokuqhwanyaza.

IEEE Std 1789-2015

Umzobo wenkcazo yesalathiso se-flicker kunye ne-percent flicker

Indlela yokuphelisa i-flicker

Ukongeza kumsebenzi wokuphelisa ubumnyama kunye nokukhanyisa indalo, ukukhanya kufuneka kuthathelwe ingqalelo ukusebenza kwezempilo kweemveliso. Ukungabi nabungozi ebantwini yinxalenye yokusebenza kwezibane ekungafuneki ukuba zingahoywa.

Ukuchatshazelwa kukulungiswa kwamandla ombane ombane (50Hz kumgangatho waseYurophu), ukuphindaphinda kwe-ripple current kwinxalenye enkulu ye-LED drive iphindwe kabini kumandla ombane, malunga ne-100Hz. Ngaphezu koko, xa kuthelekiswa nemithombo yokukhanya yemveli, ii-LED zinokuguqula kwangoko ukusebenza kwangoku kube kukukhanya. Ukuze ufezekise umphumo wokukhanya ngaphandle kokuqhwala kangangoko kunokwenzeka, umqhubi we-LED ophezulu kunye nokuhambelana phakathi komqhubi, i-dimmer kunye nemodyuli ye-LED ziyimfuneko. Lo mfanekiso ulandelayo yindlela eqhelekileyo yokuvavanya isixhobo solawulo nge "output current ripple" okanye "superiimposed AC". Ngokuqhelekileyo, ixabiso elibonisiweyo yi-100Hz. Okukhona lisezantsi ixabiso, kokukhona usezantsi umngcipheko wokuqhwanyaza.

IEEE Std 1789-2015

I-IEEE eCetyisiweyo yeMifanekiso yokuModareyitha yangoku kwii-LED eziKhanyisayo zokunciphisa imingcipheko yempilo kubabukeli.

Izibane ze-LED kunye nezibane ze-Wellway, nokuba izibane ezinobungqina obumanzi, izibane zezibiyeli, iipaneli kunye nezibane zokukhusela uthuli, kuquka iimodeli ezisisiseko kunye nemifuziselo yokubona unxunguphalo, bonke bayawuqonda umsebenzi ngaphandle kokuqhwanyaza. Unikezelo lwamandla oluphezulu olusetyenziswa sisibane lunokunciphisa i-ripple ephumayo kwaye luqonde ukuhambelana okugqibeleleyo kunye nezinto zesibane.

(Eminye imifanekiso iphuma kwi-Intanethi. Ukuba kukho ukophulwa komthetho, nceda uqhagamshelane nathi kwaye uyicime ngokukhawuleza)