Taw qhia lub ntsuas ntsuas hluav taws xob thiab nws ua haujlwm li cas
1. Illuminometer:
Lub lux meter, tseem hu ua lux meter, yog ib qho cuab yeej tshwj xeeb rau kev ntsuas luminosity thiab brightness. Nws yog ntsuas qhov siv ntawm lub teeb (illuminance)
Nws yog qhov degree uas ib yam khoom yog illuminated, uas yog, qhov piv ntawm cov luminous flux tau nyob rau saum npoo ntawm cov khoom mus rau qhov chaw illuminated. Lub ntsuas hluav taws xob feem ntau yog tsim los ntawm selenium lossis silicon photovoltaic cell thiab microampere meter.
2. Kev ntsuas txoj cai:
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 photocurrent 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. 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 muaj tseeb, tsis tshua siv. 2. Optoelectronic illuminance meter: feem ntau siv selenium solar cell illuminance meter thiab silicon solar cell illuminance meter.
Dab tsi yog qhov zoo ntawm illuminance meter?
Compact Size, Lub teeb yuag
Lub cib fim rau kev siv lub ntsuas hluav taws xob yog qhov dav heev, thiab lub sijhawm ntawm daim ntawv thov feem ntau nyob hauv ntau qhov chaw, yog li lub cev nqa tau nrog me me thiab lub teeb yuag yog thawj qhov yuav tsum tau ua ua ntej rau lub ntsuas hluav taws xob.
Qhov tseeb
Qhov zoo ntawm lub illuminance meter yog kiag li muaj feem xyuam rau nws qhov tseeb. Tau kawg, nws kuj tseem cuam tshuam nrog nws tus nqi, yog li nws yog qhov yuav tsum tau yuav lub ntsuas hluav taws xob nrog qhov tseeb ntawm tus nqi tsim nyog, feem ntau nrog qhov yuam kev tsis tshaj ± 15%.
Xim Xaus
Muaj ntau hom teeb pom kev zoo, qee qhov tsom mus rau lub teeb ntev lub teeb liab siab, lossis luv luv wavelength xiav xiav teeb xws li Hnub Teeb fluorescent teeb; Kuj tseem muaj cov kab sib npaug sib npaug xws li cov qij incandescent, qhov rhiab heev ntawm tib lub illuminance meter yuav txawv me ntsis rau cov wavelengths sib txawv, yog li kev them nyiaj nruab nrab yog tsim nyog.
Cosine Compensation
Raws li peb txhua tus paub, qhov ci ntsa iab ntawm qhov illuminated nto yog cuam tshuam nrog qhov xwm txheej ntawm lub teeb ci. Los ntawm tib lub token, thaum siv lub ntsuas hluav taws xob rau kev ntsuas, lub kaum sab xis ntawm qhov tshwm sim ntawm lub sensor thiab lub teeb ci yuav cuam tshuam rau kev nyeem ntawv ntawm lub ntsuas hluav taws xob. Yog li seb lub ntsuas hluav taws xob zoo puas muaj cov txiaj ntsig cosine tsis tuaj yeem tsis quav ntsej.
