Taw qhia rau lub hauv paus ntsiab lus ntawm kev ntsuam xyuas thiab txoj kev ntawm lub illuminance meter
1. Lub hauv paus ntsiab lus ntawm illuminance test
Illuminance yog qhov ntom ntom ntawm cov luminous flux tau txais ntawm lub dav hlau illuminated. Lub illuminance meter yog ib qho cuab yeej siv los ntsuas qhov illuminance ntawm lub teeb pom kev zoo, thiab nws yog ib qho ntawm cov cuab yeej siv dav hauv kev ntsuas illuminance.
2. Lub hauv paus ntsiab lus ntawm illuminance meter
Lub illuminance meter yog tsim los ntawm ob qhov chaw: 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.
Kev ntsuas cov kauj ruam thiab cov txheej txheem
Hauv chav ua haujlwm, qhov teeb pom kev zoo yuav tsum ntsuas ntawm txhua qhov chaw ua haujlwm (xws li lub rooj, workbench) thiab tom qab ntawd nruab nrab. Rau ib chav khoob lossis chav tsis ua haujlwm tsis muaj qhov chaw ua haujlwm tau lees paub, yog tias cov teeb pom kev dav dav siv ib leeg, feem ntau yog xaiv
Qhov teeb pom kev zoo yog ntsuas ntawm lub dav hlau kab rov tav ntawm qhov siab ntawm 0.8m. Faib qhov ntsuas thaj tsam rau hauv daim phiaj (lossis ze rau squares) ntawm qhov sib npaug, ntsuas qhov illuminance Ei ntawm qhov nruab nrab ntawm txhua daim phiaj, thiab nws qhov nruab nrab illuminance yog sib npaug rau qhov nruab nrab ntawm qhov illuminance ntawm txhua qhov taw tes, uas yog
Qhov twg Eav - qhov nruab nrab illuminance ntawm qhov ntsuas cheeb tsam, lx;
Ei —— lub teeb pom kev ntawm qhov chaw ntawm txhua daim phiaj ntsuas, lx;
N - tus naj npawb ntawm cov ntsiab lus ntsuas.
Uniformity ntawm illuminance yog hais txog qhov sib piv ntawm qhov tsawg kawg nkaus illuminance rau qhov nruab nrab illuminance ntawm qhov chaw teev tseg, uas yog:
Nyob rau hauv cov mis, Emin — hais txog qhov tsawg kawg nkaus illuminance ntawm qhov chaw yuav tsum tau ntsuas, lx.
Hauv qhov kev sim no, qhov saum npoo ntawm qhov ntsuas qhov ntsuas tau teeb tsa hauv chav yuav siv tau raws li qhov chaw tsim, thiab qhov tsawg kawg nkaus illuminance tuaj yeem suav tias yog qhov tsawg kawg nkaus illuminance tus nqi hauv qhov ntsuas ntsuas.
Ntsuas qhov ntev ntawm txhua qhov square hauv chav li lm, thiab chav loj tuaj yeem ua tau
Qhov twg Eav - qhov nruab nrab illuminance ntawm qhov ntsuas cheeb tsam, lx;
Ei —— lub teeb pom kev ntawm qhov chaw ntawm txhua daim phiaj ntsuas, lx;
N - tus naj npawb ntawm cov ntsiab lus ntsuas.
Uniformity ntawm illuminance yog hais txog qhov sib piv ntawm qhov tsawg kawg nkaus illuminance rau qhov nruab nrab illuminance ntawm qhov chaw teev tseg, uas yog:
Nyob rau hauv cov mis, Emin — hais txog qhov tsawg kawg nkaus illuminance ntawm qhov chaw yuav tsum tau ntsuas, lx.
Hauv qhov kev sim no, qhov saum npoo ntawm qhov ntsuas qhov ntsuas tau teeb tsa hauv chav yuav siv tau raws li qhov chaw tsim, thiab qhov tsawg kawg nkaus illuminance tuaj yeem suav tias yog qhov tsawg kawg nkaus illuminance tus nqi hauv qhov ntsuas ntsuas.
Ntsuas qhov ntev ntawm txhua qhov square hauv chav li lm, thiab chav loj tuaj yeem siv 2-4 m. Nyob rau hauv nqaim thiab ntev tsheb thauj mus los xws li aisles thiab ntaiv, cov ntsiab lus ntsuas yog teem raws li qhov nruab nrab ntawm qhov ntev kev taw qhia, nrog rau ncua sij hawm ntawm 1-2 m
; Lub dav hlau ntsuas yog theem hauv av lossis kab rov tav dav hlau 150mm saum av.
Qhov ntau dua qhov ntsuas cov ntsiab lus, qhov tseeb dua qhov nruab nrab illuminance tus nqi tau txais, tab sis nws kuj siv sij hawm ntau dua thiab siv zog. Yog tias qhov tso cai ntsuas qhov yuam kev ntawm Eav yog ± 10 feem pua, qhov kev ua haujlwm tuaj yeem raug txo los ntawm kev xaiv qhov ntsuas qhov tsawg tshaj plaws raws li chav ntsuas ntsuas. Qhov kev sib raug zoo ntawm ob yog teev nyob rau hauv Table 1. Yog hais tias tus naj npawb ntawm cov teeb yog raws nraim li tus naj npawb ntawm cov ntsiab lus ntsuas tau muab rau hauv lub rooj, cov ntsiab lus ntsuas yuav tsum tau ntxiv.
Chamber index Kr Yam tsawg kawg nkaus ntawm cov ntsiab lus ntsuas Chamber Performance index Kr Yam tsawg kawg nkaus ntawm cov ntsiab lus ntsuas
＜1 4 2-3 16
1-2 9 Ntau dua lossis sib npaug rau 3 25
Hauv cov qauv, L thiab W yog qhov ntev thiab dav ntawm chav, thiab hr yog qhov siab ntawm lub teeb mus rau lub dav hlau ntsuas.
Thaum lub teeb pom kev hauv zos siv los ntxiv cov teeb pom kev zoo, lub teeb pom kev ntawm qhov chaw ua haujlwm yuav tsum ntsuas raws li qhov ua haujlwm ntawm tus neeg, thiab lub photocell ntawm lub teeb pom kev zoo yuav tsum muab tso rau ntawm qhov chaw ua haujlwm lossis qhov chaw ua haujlwm rau kev ua haujlwm pom. .
Ib qho zoo tagnrho lux meter yuav tsum muaj cov hauv qab no:
● Me me thiab lub teeb yuag (Compact Size, Lub teeb yuag)
Lub sijhawm 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 thawj qhov yuav tsum tau ua ua ntej rau lub ntsuas hluav taws xob portable yog qhov me me thiab lub teeb yuag.
● Qhov tseeb﹝ Muaj tseeb﹞
Seb lub illuminance meter yog qhov zoo los yog tsis muaj kev sib raug zoo nrog nws qhov tseeb. Ntawm chav kawm, nws kuj yog ze ze rau nws tus nqi, yog li nws yog ib qho tsim nyog yuav tau yuav ib lub lux meter nrog qhov tseeb ntawm tus nqi tsim nyog. Feem ntau, qhov yuam kev yuav tsum tsis pub tshaj ± 15 feem pua.
● Xim Xim ﹝ Xim Xaus ﹞
Cov hom teeb pom kev zoo yog tag nrho-encompassing. Qee qhov tsom mus rau cov teeb liab siab siab nrog lub wavelengths ntev, los yog xiav-violet nrog luv wavelengths xws li Daylight fluorescent teeb; kuj tseem muaj ntau qhov sib npaug sib npaug xws li incandescent noob series. Qhov rhiab heev ntawm tib lub teeb pom kev zoo rau qhov sib txawv wavelengths yuav txawv me ntsis. Yog li ntawd, yuav tsum tau them nyiaj kom tsim nyog.
● Cosine Compensation﹝Cosine Compensation﹞
Peb txhua tus paub tias qhov ci ntsa iab ntawm qhov ci ntsa iab yog cuam tshuam nrog qhov xwm txheej ntawm lub teeb ci. Ib yam li ntawd, thaum ntsuas nrog lub teeb ntsuas lub teeb, qhov xwm txheej ntawm lub ntsuas hluav taws xob (Sensor) thiab lub teeb pom kev zoo yuav cuam tshuam rau kev nyeem ntawv tus nqi ntawm lub teeb ntsuas. Yog li ntawd, seb lub ntsuas hluav taws xob zoo puas muaj lub luag haujlwm ntawm cosine them nyiaj tsis tuaj yeem tsis quav ntsej.
