Ikoreshwa rya LED Kumurika Ikoranabuhanga
Hariho itandukaniro rinini hagati yumucyo wa LED nisoko gakondo yumucyo ukurikije ubunini bwumubiri na luminous flux, spekure, hamwe no gukwirakwiza kwinshi kwurumuri. LED detection ntishobora gukoporora ibipimo nuburyo bwo kubona urumuri gakondo. Muhinduzi atangiza tekinoroji yo kumenya amatara asanzwe ya LED.
Kumenya ibipimo byiza bya amatara ya LED
1.Kumenyekanisha ubukana bwinshi
Ubwinshi bwurumuri, ubukana bwurumuri, bivuga ubwinshi bwurumuri rusohoka muburyo bwihariye. Bitewe numucyo wibanze wa LED, amategeko aringaniye ntakurikizwa mugihe gito. Igipimo cya CIE127 gitanga uburyo bubiri bwo gupima uburyo bwo gupima ubukana bwurumuri: imiterere yo gupima A (imiterere yumurima wa kure) nuburyo bwo gupima B (hafi yumurima). Mu cyerekezo cyurumuri rwinshi, ubuso bwa detector mubihe byombi ni cm 1. Mubisanzwe, ubukana bwa luminous bupimwa ukoresheje imiterere isanzwe B.
2. Luminous flux hamwe no kumenya ingaruka zumucyo
Luminous flux nigiteranyo cyumucyo utangwa nisoko yumucyo, ni ukuvuga urumuri rwasohotse. Uburyo bwo gutahura burimo ubwoko 2 bukurikira:
(1) Uburyo bwuzuye. Koresha itara risanzwe hamwe nigitara kiri munsi yikizamini hanyuma uhindure urwego rwuzuzanya, hanyuma wandike ibyo basomye mumafoto yerekana amashanyarazi nka Es na ED. Umucyo usanzwe urumuri uzwi Φs, hanyuma urumuri rwapimwe ΦD = ED × Φs / Es. Uburyo bwo kwishyira hamwe bukoresha ihame rya "point light light source", ryoroshye gukora, ariko ryatewe no gutandukana kwubushyuhe bwamabara bwamatara asanzwe n itara ririmo kugeragezwa, ikosa ryo gupimisha ni rinini.
(2) Spectroscopy. Luminous flux ibarwa uhereye kumashanyarazi ya P (λ) ikwirakwizwa. Ukoresheje monochromator, bapima 380nm ～ 780nm yumucyo wamatara asanzwe murwego rwo guhuza, hanyuma upime urumuri rwitara ruri mukigeragezo mubihe bimwe, hanyuma ubare urumuri rwamatara ugereranije.
Ingaruka yumucyo ni igipimo cyumucyo uturuka kumasoko yumucyo n'imbaraga ikoresha. Mubisanzwe, ingaruka zumucyo za LED zipimwa nuburyo buhoraho.
3. Kugaragaza ibintu biranga ibintu
Kumenyekanisha ibiranga LED birimo gukwirakwiza imbaraga, gukwirakwiza amabara, ubushyuhe bwamabara, hamwe nibipimo byerekana amabara.
Ikwirakwizwa ryingufu zerekana ko urumuri rwumucyo rugizwe nuburebure bwamabara menshi yuburebure butandukanye, kandi imbaraga zimirasire ya buri burebure nazo ziratandukanye. Itandukaniro ryitwa gukwirakwiza imbaraga zo gukwirakwiza urumuri rukurikije gahunda yuburebure. Spectrophotometer (monochromator) n'itara risanzwe bikoreshwa mukugereranya no gupima isoko yumucyo.
Umuhuzabikorwa wumukara ni umubare ugereranya urumuri rutanga ibara ryumucyo kumurongo wimbonerahamwe muburyo bwa digitale. Hariho sisitemu nyinshi zo guhuza ibara ryerekana ibara. Sisitemu ya X na Y isanzwe ikoreshwa.
Ubushyuhe bwamabara ni umubare werekana imbonerahamwe yamabara (isura yerekana ibara ryerekana) isoko yumucyo nkuko bigaragara mumaso yumuntu. Iyo urumuri rutangwa nisoko yumucyo rufite ibara rimwe nurumuri rutangwa numubiri wumukara rwose mubushyuhe runaka, ubushyuhe nubushyuhe bwamabara. Mu rwego rwo kumurika, ubushyuhe bwamabara nibintu byingenzi bisobanura ibintu byiza biranga isoko yumucyo. Igitekerezo kijyanye nubushyuhe bwamabara gikomoka kumirasire yumubiri wumukara, ushobora kuboneka kumurongo uhuza ibara urimo umubiri wumukara unyuze kumurongo wamabara yumucyo.
Ibara ryerekana amabara yerekana ingano yumucyo ugaragazwa nisoko yumucyo yerekana neza ibara ryikintu. Ubusanzwe bigaragazwa nigipimo rusange cyerekana amabara Ra, aho Ra ni impuzandengo yimibare yerekana ibara ryerekana ibara ryerekana umunani. Ibara ryerekana ibara ni ikintu cyingenzi cyerekana urumuri rwiza, rugena urwego rushyiraho urumuri, kandi kunoza ibara ryerekana amabara ya LED yera ni kimwe mubikorwa byingenzi byubushakashatsi niterambere.
4.Ikizamini cyo gukwirakwiza ubukana bworoshye
Isano iri hagati yubucyo bwumucyo nu mfuruka (icyerekezo) byitwa gukwirakwiza ibinyoma byurumuri, kandi umurongo ufunze wakozwe no kugabura byitwa gukwirakwiza ubukana bwurumuri. Kuberako hariho ingingo nyinshi zo gupima, kandi buri ngingo itunganywa namakuru, mubisanzwe bipimwa na fotometrike ikwirakwizwa.
5.Ingaruka zubushyuhe kuri optique iranga LED
Ubushyuhe buzagira ingaruka kuri optique ya LED. Umubare munini wubushakashatsi urashobora kwerekana ko ubushyuhe bugira ingaruka kuri LED yangiza ikirere hamwe namabara.
6. Ibipimo byo kumurika hejuru
Umucyo utanga isoko yumucyo mubyerekezo runaka nuburemere bwurumuri rwumucyo mubice byateganijwe muri icyo cyerekezo. Mubisanzwe, metero yubucyo bwa metero hamwe nintego zumucyo zikoreshwa mugupima ubwiza bwubuso.
Gupima ibindi bipimo byerekana amatara ya LED
1.Gupima ibipimo by'amashanyarazi by'amatara ya LED
Ibipimo by'amashanyarazi ahanini birimo imbere, voltage ihindagurika hamwe na rezo ihindagurika, bifitanye isano no kumenya niba itara rya LED rishobora gukora bisanzwe. Hariho ubwoko bubiri bwibipimo byamashanyarazi bipima amatara ya LED: ibipimo bya voltage bipimishwa munsi yumuriro runaka; na parameter yubu igeragezwa munsi ya voltage ihoraho. Uburyo bwihariye nuburyo bukurikira:
(1) Imbere ya voltage. Gushyira imbere imbere kumatara ya LED kugirango bimenyekane bizatera voltage kugabanuka kumpera zayo. Hindura inkomoko yimbaraga nigiciro cyubu hanyuma wandike ibyasomwe bijyanye na voltmeter ya DC, aribwo voltage yimbere yamatara ya LED. Ukurikije imyumvire isanzwe, iyo LED iri imbere, kurwanya ni bito, kandi uburyo bwo hanze bwa ammeter burasobanutse neza.
(2) Subiza inyuma. Koresha voltage yinyuma kumatara ya LED yapimwe hanyuma uhindure amashanyarazi yagenwe. Gusoma ammeter ni ihindagurika ryamatara ya LED yapimwe. Ni kimwe no gupima voltage yimbere, kuko LED ifite imbaraga nini iyo ikora muburyo bwinyuma.
2, Ikiranga ubushyuhe bwamatara ya LED
Ibiranga ubushyuhe bwa LED bifite ingaruka zikomeye kubiranga optique n'amashanyarazi biranga LED. Kurwanya ubushyuhe hamwe nubushyuhe bwihuza nibyo bintu nyamukuru biranga ubushyuhe bwa LED2. Kurwanya Ubushyuhe bivuga kurwanya ubushyuhe hagati yubusabane bwa PN nubuso bwurwo rubanza, nicyo kigereranyo cyitandukaniro ryubushyuhe kumuyoboro utemba wubushyuhe hamwe nimbaraga zashizwe kumuyoboro. Ubushyuhe bwo guhuza bivuga ubushyuhe bwa PN ihuza LED.
Uburyo bwo gupima ubushyuhe bwa LED hamwe nubushyuhe bwumuriro muri rusange: uburyo bwa infragre ya micro-imager, uburyo bwa spekrometrike, uburyo bwo gukoresha amashanyarazi, uburyo bwo gusikana amashanyarazi hamwe nibindi. Ubushyuhe bwa chip ya LED bwapimwe nkubushyuhe bwo guhuza LED hamwe na microscope yubushyuhe bwa infragre cyangwa thermocouple ntoya, kandi ukuri ntikwari guhagije.
Kugeza ubu, uburyo bw'amashanyarazi bukoreshwa muburyo bukoreshwa mugukoresha umurongo ugereranije hagati yumubyigano wimbere wumuvuduko wa LEDPN hamwe nubushyuhe bwihuriro rya PN, hanyuma ukabona ubushyuhe bwihuza rya LED mugupima itandukaniro ryamanuka rya voltage yimbere kuri ubushyuhe butandukanye.