Cov kev paub yooj yim txog lub ntsuas hluav taws xob tau sau tseg
Tib neeg thiab txhua yam tsiaj nyob hauv lub ntiaj teb ntawm qhov kaj, tsis muaj qhov kaj, kev ua neej yuav tsum nres. Hauv kev xyaum ntawm tib neeg rov siv lub teeb pom kev zoo thiab tsim cov khoom siv hluav taws xob, kev sib piv ntawm cov luminosity yog ua txhua lub sijhawm. Photometry muaj ntau yam kev siv hauv lub neej txhua hnub. Yog li ntawd, manufacturers tau tsim ntau yam photometers, thiab illuminance meter yog ib qho ntawm lawv. Ib yam ntawm.
Lub lux meter (los yog lux meter) yog ib qho tsis siv neeg luam ntawv kho qhov muag fiber ntau thiab cov cuab yeej kho qhov muag rau kev ntsuas qhov siv ntawm lub teeb ci thiab lub teeb ntuj. Nws daws qhov teeb meem ntawm kev ntsuas tsis tu ncua ntawm lub teeb siv thiab tsis siv neeg kaw. Nws yog tsim los ntawm photodetector, ib qho tsis siv neeg iav hloov amplifier Circuit Court, ib tug nkhaus kaw cov cuab yeej, lub tshuab luam ntawv digital thiab ib qho instantaneous digital zaub ntaus ntawv. Cov muaj pes tsawg leeg ntawm photovoltaic hlwb ua rau pom spectrum teb nkhaus raws li tib neeg pom spectrum nkhaus tau teev tseg los ntawm International Commission on Illumination (CIE).
Lub hauv paus ntsiab lus ntawm kev ntsuas lub teeb pom kev zoo: lub teeb ci photoelectric uas ncaj qha hloov lub teeb lub zog rau hauv lub zog hluav taws xob. Illuminance yog qhov ntom ntom ntawm cov luminous flux tau txais ntawm lub dav hlau illuminated. Lub illuminance meter yog siv los ntsuas qhov siv lub teeb (illuminance), uas yog qhov degree uas cov khoom yog illuminated, uas yog, qhov piv ntawm cov luminous flux tau nyob rau saum npoo ntawm cov khoom mus rau qhov chaw illuminated, thiab yog ib qho ntawm cov cuab yeej siv dav tshaj plaws hauv kev ntsuas illuminance.
Lub hauv paus ntsiab lus ntawm lub teeb pom kev zoo: Lub teeb pom kev zoo yog tsim los ntawm ob ntu: lub taub hau photometric (tseem hu ua lub teeb tau txais kev sojntsuam, suav nrog lub receiver, V (λ) khub lim, thiab cosine corrector) thiab nyeem ntawv . Feem ntau siv selenium (Se) photocell lossis silicon (Si) photocell illuminance meter, tseem hu ua lux meter.
Cov kev xav tau ntawm kev siv lub ntsuas hluav taws xob: Kev sojntsuam ntawm lub ntsuas hluav taws xob yog ua los ntawm iav, uas yooj yim tawg thiab puas, thiab cov nyhuv dej tsis zoo thaum siv.
1. Photocells yuav tsum siv selenium (Se) photocells los yog silicon (Si) photocells nrog zoo linearity; lawv tseem muaj peev xwm tswj tau zoo stability thiab siab rhiab heev tom qab ua hauj lwm ntev; Thaum E yog siab, xaiv photocells nrog siab sab hauv tsis kam, thiab lawv rhiab heev yog tsawg thiab linear Zoo, nws tsis yooj yim rau puas los ntawm lub teeb muaj zog;
2. Muaj V (λ) kho lim sab hauv, uas yog tsim rau lub teeb pom kev zoo nrog cov xim sib txawv, thiab qhov yuam kev me me;
3. Ntxiv ib cosine lub kaum sab xis compensator (opalescent iav los yog dawb yas) nyob rau hauv pem hauv ntej ntawm lub photocell vim hais tias lub photocell deviates los ntawm txoj cai cosine thaum lub teeb meem yog loj;
4. Lub illuminance meter yuav tsum ua hauj lwm ntawm los yog ze ntawm chav tsev kub (photocell drift hloov nrog kub).
Classification ntawm illuminometers:
1. Visual illuminance meter: nws tsis yooj yim rau siv, qhov tseeb tsis siab, thiab nws tsis tshua siv;
2. Photoelectric illuminance meter: Selenium photocell illuminance meter thiab silicon photocell illuminance meter yog feem ntau siv.
