Ntsuas Cov Ntsiab Cai, Hom, thiab Calibrating Illuminance Meters
Kev ntsuas lub hauv paus ntsiab lus ntawm illuminance meter:
Lub cell photovoltaic yog ib qho khoom siv hluav taws xob uas ncaj qha hloov lub teeb lub zog rau hauv hluav taws xob hluav taws xob. Thaum lub teeb tshwm sim nyob rau saum npoo ntawm selenium hnub ci cell, qhov teeb meem tshwm sim dhau los ntawm cov hlau nyias zaj duab xis 4 thiab mus txog qhov sib cuam tshuam ntawm semiconductor selenium txheej 2 thiab cov hlau nyias zaj duab xis 4, tsim cov nyhuv photoelectric ntawm lub interface. Qhov loj ntawm lub peev xwm sib txawv generated yog proportional rau lub illuminance nyob rau saum npoo ntawm photovoltaic cell txais lub teeb. Hauv qhov no, yog tias ib qho kev sib txuas sab nraud txuas nrog, qhov tam sim no yuav ntws los ntawm, thiab tus nqi tam sim no yuav qhia rau ntawm microampere meter nrog lux (Lx) raws li qhov ntsuas. Qhov loj ntawm photocurrent nyob ntawm lub zog ntawm qhov teeb meem teeb meem thiab qhov tsis kam nyob hauv Circuit Court. Lub illuminance meter muaj lub iav hloov khoom siv, yog li nws tuaj yeem ntsuas ob qhov siab thiab qis illuminance. Hom illuminance meters: 1. Visual illuminance meter: siv tsis yooj yim, tsis tshua muaj neeg, tsis tshua siv 2. Optoelectronic illuminance meter: feem ntau siv selenium hnub ci cell illuminance meter thiab silicon solar cell illuminance meter
Hom illuminance meters:
1. Visual lux meter: siv tsis yooj yim, tsis muaj tseeb, tsis tshua siv
2. Optoelectronic lux meter: feem ntau siv selenium photovoltaic cell lux meter thiab silicon photovoltaic cell lux meter
Muaj pes tsawg leeg thiab kev siv yuav tsum tau ntawm photovoltaic cell illuminance meter:
1. Muaj pes tsawg leeg: microampere meter, hloov pob qhov rooj, xoom hloov kho, lub davhlau ya nyob twg thaiv, photovoltaic cell, V (λ) kho lim, thiab lwm yam.
Feem ntau siv selenium (Se) lossis silicon (Si) photovoltaic cell illuminance meter, tseem hu ua lux meter
2. Cov kev cai siv:
① Selenium (Se) los yog silicon (Si) photovoltaic hlwb nrog linearity zoo yuav tsum tau siv rau kev siv photovoltaic; Kev ua haujlwm ntev ntev tuaj yeem ua kom muaj kev ruaj ntseg zoo thiab ua haujlwm siab; Thaum siv siab E, xaiv cov cell photovoltaic nrog siab sab hauv tsis kam, uas tsis tshua muaj rhiab heev thiab zoo linearity, thiab tsis yooj yim puas los ntawm lub teeb muaj zog irradiation.
② Nruab nrog V (λ) kho lim, haum rau illumination nrog txawv xim kub kub qhov chaw, nrog me me yuam kev
③ Yog vim li cas ntxiv ib cosine kaum compensator (milky dawb iav los yog dawb yas) nyob rau hauv pem hauv ntej ntawm lub photovoltaic cell yog hais tias thaum lub sij hawm qhov teeb meem lub kaum sab xis loj, lub photovoltaic cell deviates los ntawm txoj cai cosine.
④ Lub ntsuas hluav taws xob yuav tsum ua haujlwm ntawm lossis ze ntawm chav tsev kub (qhov txav ntawm lub cell photovoltaic hloov nrog qhov kub thiab txias)
Calibration ntawm illuminance meter:
Calibration txoj cai:
Teeb lub photovoltaic cell vertically nrog Ls → E=I/r2, thiab hloov r kom tau txais cov txiaj ntsig photocurrent nyob rau hauv txawv illuminance. Hloov cov nplai tam sim no mus rau qhov ntsuas qhov pom kev raws li kev sau ntawv ntawm E thiab i.
Calibration method:
Siv lub teeb siv hluav taws xob siv hluav taws xob, ntawm qhov kwv yees ua haujlwm nyob deb ntawm qhov chaw teeb pom kev zoo, hloov qhov nrug l ntawm photovoltaic cell thiab cov qauv teeb, sau cov ntawv nyeem ntawm ammeter ntawm txhua qhov kev ncua deb, thiab suav cov illuminance E siv qhov kev ncua deb. square law E=I/r2. Los ntawm qhov no, ib tug series ntawm txawv illuminance photocurrent qhov tseem ceeb kuv tuaj yeem tau txais, thiab qhov kev hloov pauv ntawm photocurrent i thiab illuminance E tuaj yeem ua tau, uas yog calibration nkhaus ntawm lub ntsuas hluav taws xob. Lub calibration nkhaus ntawm lub illuminance meter yuav muab faib los ntawm lub dial ntawm lub illuminance meter, uas yog lub calibration nkhaus ntawm lub illuminance meter.
Cov yam ntxwv cuam tshuam rau calibration nkhaus:
Thaum hloov cov cell photovoltaic thiab ammeters, recalibration yuav tsum tau; Tom qab siv lub illuminance meter rau ib lub sij hawm, nws yuav tsum tau recalibrated (feem ntau yog 1-2 zaug ib xyoos); High precision illuminance meters tuaj yeem ntsuas tau siv cov qauv teeb pom kev zoo; Kev nthuav dav ntawm qhov chaw ruaj khov ntawm lub ntsuas hluav taws xob tuaj yeem hloov qhov kev ncua deb r, thiab cov qauv sib txawv kuj tuaj yeem siv los xaiv qhov me me ammeter.
