Photometric Measurement Systems in Lighting Engineering: Kev Ntsuam Xyuas Photopic thiab Scotopic Lumen Parameters
Los ntawm Kevin Rao Kaum Ob Hlis 1, 2025
Kev ntsuas kho qhov muag ntawm lub teeb pom kev zoo yuav tsum ntsuas cov qauv raws li cov yam ntxwv ntawm lub cev ntawm tib neeg lub zeem muag. Tib neeg retina muaj ob hom photoreceptor hlwb: cones thiab rods, sib xws rau txawv spectral teb curves. Lub International Commission ntawm Illumination (CIE) tau hais raws li lub photopic luminous efficiency muaj nuj nqi V (λ) thiab scotopic luminous efficiency muaj nuj nqi V'(λ), tsim kom muaj ob tug ywj siab photometric ntsuas tshuab.
Photopic Lumen Measurement Standard
Photopic lumens yog raws li CIE 1931 Standard Observer cone teb nkhaus, nrog ncov rhiab heev ntsuas nyob rau hauv 555nm daj- cheeb tsam ntsuab. Cov txheej txheem no siv rau cov teeb pom kev zoo ib puag ncig nrog luminance siab dua 3 cd / m², sib haum rau nruab hnub nrig sab nraum zoov thiab cov chaw ua haujlwm hauv tsev. Cov cuab yeej ntsuas ntsuas tau ntsuas raws li ISO / CIE 19476 tus qauv, yuav tsum muaj qhov ntsuas qhov tsis sib xws f1' Tsawg dua lossis sib npaug li 3%.
Hauv kev tsim teeb pom kev lag luam, photopic lumen qhov tseem ceeb ncaj qha cuam tshuam nrog cov teeb pom kev zoo uas tau teev tseg hauv cov qauv xws li GB50034-2013. Kev tuav 500lx ntawm lub chaw ua hauj lwm lub dav hlau yuav tsum muaj photopic lumen ceev tsis pub tsawg tshaj 300 lm / m².
Scotopic Lumen Measurement Principple
Scotopic lumens yog raws li CIE 1951 scotopic muaj nuj nqi V'(λ), nrog ncov rhiab heev ntawm 507nm nyob rau hauv xiav - cheeb tsam ntsuab. Qhov kev ntsuas no tsim nyog rau ib puag ncig nrog luminance hauv qab 0.01 cd / m², xws li cov xwm txheej ntawm lub hli lossis qhov tob hauv av. Kev ntsuas Scotopic yuav tsum tau siv qhov tsaus ntuj - hloov kho photometric probes, ua raws li CIE 198: 2011 phau ntawv qhia rau mesopic photometry.
Scotopic lumen parameters ua lub luag haujlwm tseem ceeb hauv kev tsim cov chaw hloov pauv hauv qhov teeb pom kev zoo. Raws li specification JTG/T D70/2-01-2014, lub luminance nyob rau hauv qhov nkag seem yuav tsum tau tsim nrog ib tug gradient decay nkhaus raws li scotopic lumen qhov tseem ceeb.
Technical Parameter Sib Piv Table
| Kev ntsuas Dimension | Photopic Lumen System | Scotopic Lumen System |
|---|---|---|
| Daim ntawv pov thawj | CIE 1931 V(λ) muaj nuj nqi | CIE 1951 V'(λ) muaj nuj nqi |
| Peak Wavelength | 555nm ua | 507nm ua |
| Siv tau Luminance | >3 cd / m² | <0.01 cd/m² |
| Hom Cell | Cone hlwb | Qws hlwb |
| Ntsuas ntsuas | L-1000 Photometer | Tsaus -Adapted Probe System |
| Spectral Luj | Ua kom pom cov xim daj -ntsuab ntsuab | Hais txog xiav -ntsuab ntsuab |
| Daim ntawv thov Engineering | Teeb pom kev ua haujlwm sab hauv tsev | Txoj kev & qhov teeb pom kev zoo |
| Cov ntaub ntawv txheem | ISO/CIE 19476 | TSI 198:2011 |
Engineering Application ntawm S/P Ratio
Qhov sib piv S / P yog txhais raws li qhov piv ntawm lub teeb qhov chaw scotopic lumens rau nws cov duab lumens. Qhov parameter no muaj qhov tseem ceeb hauv kev tsim teeb pom kev zoo mesopic. Raws li CIE 191: 2010, qhov chaw mesopic thaj tsam li ntawm 0.01 txog 3 cd / m², sib xws rau hauv nroog txoj kev teeb pom kev zoo thiab chaw nres tsheb.
Cov teeb pom kev zoo nrog qhov sib piv S / P siab muab qhov pom kev zoo dua lumens rau tib lub teeb pom kev zoo lumen. Hauv kev coj ua engineering, LED teeb pom kev zoo nrog qhov sib piv S / P saum toj no 1.2 tuaj yeem txo txoj kev teeb pom kev zoo zog los ntawm 15-20% thaum tswj qhov sib npaug ntawm qhov pom.
Spectral Optimization Technology
Kho LED nti wavelength kev sib xyaw ua ke thiab phosphor ratios tso cai rau kev tswj xyuas meej ntawm lub teeb ci S / P piv. Siv 450nm xiav chips nrog nqaim -FWHM phosphors tuaj yeem ua tiav qhov zoo tshaj plaws nrog S / P piv ntawm 1.3-1.5. Cov teeb pom kev zoo li no hauv kev teeb pom kev zoo tuaj yeem txo cov sijhawm tsav tsheb los ntawm 0.2-0.3 vib nas this.
Daim Ntawv Thov Kev Lag Luam Scenarios
Txoj Kev Teeb pom kev zoo
Raws li tus qauv CJJ45-2015, teeb pom kev zoo rau kev nthuav dav yuav tsum ua tib zoo xav txog cov teeb pom kev zoo photopic thiab scotopic luminance tsis. Tus txheej txheem tsim siv mesopic photometric qauv los ua kom lub zog ua haujlwm zoo los ntawm kev kho qhov sib piv S / P. Cov ntaub ntawv tiag tiag qhia tau hais tias siv LED txoj kev teeb pom kev zoo nrog S / P piv ntawm 1.4 txo lub zog siv hluav taws xob los ntawm 18% thaum tswj qhov kev pom zoo tib yam.
Tunnel Lighting Control
Tunnel teeb pom kev zoo yog tsim los sib cais rau thaj chaw nkag, thaj chaw hloov pauv, thaj chaw sab hauv, thiab thaj chaw tawm. Lub teeb pom kev zoo hauv thaj chaw hloov pauv yuav tsum yog raws li scotopic lumen tsis tau tsim kom muaj qhov luminance decay nkhaus, raws li tus qauv exponential muaj nuj nqi. Cov kev qhia tshwj xeeb tam sim no xav tau qhov luminance decay tus nqi nyob rau hauv qhov kev hloov chaw ntev tsis tshaj 1:10.
Muaj kev nyab xeeb teeb pom kev zoo
Teeb pom kev zoo hauv thaj chaw ua haujlwm txaus ntshai yuav tsum ua kom tau raws li ob qho tib si photopic illuminance cov cai thiab scotopic contrast cov cai. Raws li GB/T 26189-2010, lub teeb pom kev zoo nyob rau hauv siab - cov chaw ua haujlwm muaj kev pheej hmoo yuav tsum muaj qhov sib piv S/P tsis qis dua 1.2 kom ntseeg tau tias muaj peev xwm paub txog kev cuam tshuam hauv cov teeb pom kev tsawg.
FAQ
Txoj kev ntsuas rau scotopic lumens
Kev ntsuas Scotopic lumen yuav tsum tau ua nyob rau hauv ib qho chaw tsaus ntuj, nrog rau kev sojntsuam mus txog 30 feeb ntawm kev hloov kho tsaus. Kev ntsuas qhov ntsuas lub spectral teb yuav tsum tau ntsuas rau V'(λ) muaj nuj nqi, nrog rau qhov kev ntsuas qhov ntsuas tsis paub tseeb tsawg dua lossis sib npaug li 5%.
Standard ntau yam rau S / P piv
S / P piv rau cov teeb pom kev dav dav LED qhov chaw nyob ntawm 0.8 txog 1.5. Cov peev txheej tshwj xeeb rau kev teeb pom kev zoo tau pom zoo kom muaj S / P piv ntawm 1.2 thiab 1.4. Cov peev txheej hauv qab 0.9 tsis haum rau thaj chaw mesopic.
Engineering daim ntawv thov conversion yam
Nyob rau hauv ib puag ncig mesopic, qhov hloov pauv ntawm photopic illuminance thiab scotopic luminance yog 0.8-1.2, nrog rau cov nqi tshwj xeeb nyob ntawm qhov chaw illuminance theem thiab lub teeb qhov chaw spectral faib.
Kev ntsuas ntsuas cov ntawv pov thawj xav tau
Cov cuab yeej rau kev ntsuas scotopic yuav tsum muaj ntawv pov thawj CNAS. Daim ntawv pov thawj Calibration yuav tsum suav nrog V'(λ) cov ntaub ntawv sib piv. Cov cuab yeej drift yuav tsum tswj tsis pub dhau 3% thaum lub sij hawm calibration txhua xyoo.
Standard ua raws li kev txheeb xyuas
Cov tswv yim tsim teeb pom kev zoo yuav tsum raug xa nrog rau thib peb -cov ntaub ntawv qhia txog kev kuaj sim. Cov ntawv ceeb toom yuav tsum muaj cov khoom siv hluav taws xob spectral faib hluav taws xob, S / P piv, thiab cov ntaub ntawv suav mesopic luminance.
Technical Standard References
CIE 1931 Standard Colorimetric Observer Spectral Tristimulus Tus Nqi
CIE 1951 Scotopic Spectral Luminous Efficiency Function
ISO/CIE 19476: 2014 Photometer Calibration Specification
CIE 191: 2010 Pom zoo System rau Mesopic Photometry
JTG/T D70/2-01-2014 Cov Cai Qhia Kom Paub Txog Kev Tsim Kho Txoj Kev Loj Qhov Teeb Pom Kev
