Kukuvadza kwemwenje kupenya

Kubva mwenje wakapinda munguva yemarambi efluorescent, mwenje wakaperekedzwa nemwenje wange uchifashama nharaunda yedu yemwenje. Zvichienderana neyakajeka musimboti wemarambi efluorescent, dambudziko rekufinyamisa harina kunyatsogadziriswa. Nhasi, tapinda munguva yekuvhenekesa kwe LED, asi dambudziko rekupenya kwechiedza richiripo.

Chii chinonzi flicker

Flicker iko kushanduka kwechiedza chakasimba kana kupenya mune imwe nguva yenguva. Kupenya kwemwenje kunoitika mumashandisi mazhinji ekuvhenekesa, kusanganisira kupfura zvishoma paTV, mwenje wemugwagwa, nzvimbo dzakasiyana dzekuvhenekesa uye nzvimbo dzebasa uchishandisa muchina unotenderera nekukurumidza. Flicker ichakanganisa hutano hwevanhu, uye dhigirii rekukanganisa rinoenderana nehuwandu hwekufinyamisa uye kunzwisiswa kwemunhu kuflicker. High frequency flicker haizove neyakakosha kukanganisa pamuviri wemunhu, asi yakaderera frequency flicker pazasi 120 Hz iri nyore kukanganisa hutano hwevanhu.

Weighting function yeziso remunhu senits to flicker

Kukuvadza kwemwenje kupenya

Chiedza sosi flicker chakabatana zvakanyanya nemigraine, kutemwa nemusoro, autism, kuneta kwemaziso, kusaona uye zvimwe zvirwere zvetsinga. Zvidzidzo zvakaratidza kuti low-frequency, huwandu hwe3-70Hz scintillation light source inogona kukonzera photosensitive pfari kune vamwe vanhu vanonzwa; 100Hz flicker frequency yakaonekwa kuti ikonzere musoro uye migraine; 120Hz inopenya sosi yemwenje inogona kukanganisa mafungiro evanhu, sekufinha uye kusagadzikana. Kunyepa kwekuona kunokonzerwa neflicker mhedzisiro uye ine chekuita nemakanika kufamba kune njodzi munzvimbo dzemaindasitiri. Naizvozvo, kunyatsoyera uye kuongorora iyo flicker maitiro ezvigadzirwa zvemwenje zvine hukama zvakananga nehutano hwevanhu, rinova dambudziko rekukurumidzira kugadziriswa.

Zvikonzero zveflicker

Zvikonzero zvekupenya kwemarambi e LED zvinosanganisira kwete chete zvinhu zvemagetsi, asiwo zvikonzero zvehunyanzvi hwekuita kwemwenje sosi uye isina musoro dhizaini dhizaini. Ripple current ndechimwe chezvikonzero zvakakosha zvekufinyamisa mumagetsi emarambi mazhinji. Ripple yazvino ndiyo AC chikamu chichiripo mushure mekugadzirisa uye kusefa. Ripple yazvino inoiswa pamusoro peDC uye ine ma frequency akasiyana uye macurves. Ichi chikamu che AC chinoita kuti simba reiyo LED module ichinje, iyo inozoshandura kupenya. Huwandu uye kuwanda kweiyo superimposed AC ndiyo inogadzirisa zvinhu zve flicker.

IEEE Std 1789-2015

Dhiagiramu yetsanangudzo yeflicker index uye percent flicker

Nzira yekubvisa flicker

Pamusoro pebasa rekubvisa rima uye kuvhenekera zvakatipoteredza, kuvheneka kunofanira kufunga nezvehutano hwehutano hwezvigadzirwa. Kusakuvara kuvanhu chikamu chekushanda kwemwenje kusingafanirwe kufuratirwa.

Zvichikanganiswa nekugadziriswa kwemagetsi emagetsi emagetsi (50Hz muEuropean standard), kuwanda kweiyo ripple ikozvino muchikamu chikuru che LED drive inopeta zvakapetwa kaviri yemagetsi, ayo angangoita 100Hz. Uyezve, zvichienzaniswa nemwenje wechinyakare masosi, maLED anogona kushandura ikozvino kushanda kuita mwenje. Kuti uwane iyo mwenje yekubuda mhedzisiro pasina kupenya zvakanyanya sezvinobvira, yepamusoro-mhando ye LED mutyairi uye kuenderana pakati pemutyairi, dimmer uye LED module inokosha. Mufananidzo unotevera inzira yakajairika yekuongorora mudziyo wekudzora kuburikidza ne "output current ripple" kana "superiimposed AC". Kazhinji, kukosha kwakaratidzwa ndeye 100Hz. Iyo yakadzikira kukosha, inodzikira njodzi yekubhururuka.

IEEE Std 1789-2015

IEEE Yakakurudzirwa Mifananidzo yeModulating Yazvino muKupenya-Kupenya maLED ekuderedza Njodzi dzehutano kune Vataridzi.

Mwenje yeWellway LED nemwenje, angave mwenje-yekudzivirira-mvura, marambi emabhureki, mapani uye marambi asingapindi guruva, kusanganisira mamodhiyo ekutanga uye mamodhi anoona nezvekukurumidzira, vese vanoona basa racho pasina kupenya. Simba remhando yepamusoro rinoshandiswa nerambi rinogona kuderedza kubuda kwacho uye kuona kunyatsoenderana nemidziyo yemwenje.

(Mimwe mifananidzo inobva paInternet. Kana pane kukanganisa, tapota taura nesu uye uibvise pakarepo)