Kev tshawb fawb ntawm tus kheej-calibration yuam kev piv txoj kev ntawm infrared tus pas ntsuas kub
1 blackbody hluav taws xob thiab infrared ntsuas kub ntsuas txoj cai
Txhua qhov kub thiab txias siab tshaj li xoom ntawm cov khoom yog tas li xa tawm lub zog hluav taws xob infrared mus rau qhov chaw nyob ib puag ncig. Qhov loj ntawm cov khoom siv hluav taws xob infrared hluav taws xob thiab nws qhov kev faib tawm los ntawm wavelength thiab nws qhov kub thiab txias ntawm qhov chaw muaj kev sib raug zoo heev, yog li ntawd, los ntawm kev ntsuas ntawm infrared zog radiated los ntawm cov khoom nws tus kheej, tus pas ntsuas kub qhov muag qhov system nyob rau hauv lub detector mus rau hauv ib tug hluav taws xob teeb liab thiab los ntawm. infrared tus pas ntsuas kub tso saib ib feem ntawm qhov kub thiab txias ntawm cov khoom yuav tsum tau ntsuas, nws yuav muaj peev xwm txiav txim siab qhov kub thiab txias ntawm qhov chaw, uas yog cov hluav taws xob infrared raws li qhov ntsuas kub ntawm lub hom phiaj.
Infrared tus pas ntsuas kub nta: ntsuas tsis sib cuag, qhov kub ntau, lub sij hawm teb ceev ceev, siab rhiab heev, tab sis vim qhov cuam tshuam ntawm emissivity ntawm cov khoom nyob rau hauv kev sim, nws yuav luag tsis yooj yim sua kom ntsuas qhov kub ntawm qhov khoom nyob rau hauv kev sim, ntsuas yog qhov kub thiab txias.
Tus txheej txheem calibration txheej txheem ntawm infrared tus pas ntsuas kub yog siv lub blackbody furnace calibration. Blackbody yog txhais nyob rau hauv txhua rooj plaub ntawm tag nrho cov wavelengths ntawm qhov teeb meem hluav taws xob nqus tus nqi yog sib npaug zos rau 1 ntawm cov khoom, lub blackbody yog ib tug zoo tagnrho cov khoom qauv, yog li cov kev taw qhia ntawm ib tug hluav taws xob coefficient nrog rau qhov xwm ntawm cov khoom thiab cov saum npoo ntawm lub radiation. hloov, uas yog, emissivity, uas yog txhais raws li cov khoom tiag tiag thiab tib qhov kub thiab txias blackbody hluav taws xob cov khoom ntawm qhov piv. Cov khoom hluav taws xob thiab kev nqus ntawm infrared radiation txoj cai kom ua tau raws li Kirchhoff txoj cai lij choj, thaum lub teeb hluav taws xob teeb pom kev zoo rau saum npoo ntawm txhua yam khoom, raws li lub hauv paus ntsiab lus ntawm kev txuag hluav taws xob, cov khoom ntawm qhov teeb meem hluav taws xob nqus tus nqi, reflectivity, transmittance ntawm peb yuav tsum. yuav sib npaug ntawm qhov sib npaug ntawm 1, qhov dav dav emissivity tsis yooj yim rau kev txiav txim siab, feem ntau yog los ntawm kev ntsuas qhov nqus ntawm qhov nqus los txiav txim siab qhov emissivity, yog li lub blackbody qhov chaw ntawm hluav taws xob raws li tus qauv hluav taws xob rau kev tshuaj xyuas ntau yam ntawm cov hluav taws xob hluav taws xob infrared. .
Infrared tus pas ntsuas kub los ntawm qhov system optical, photodetector, teeb liab amplifier thiab teeb liab ua, tso zis tso zis thiab lwm yam khoom. Cov khoom ntsuas thiab qhov cuam tshuam ntawm qhov chaw ntawm cov kab hluav taws xob los ntawm cov khoom siv hluav taws xob demodulation nkag mus rau lub ntsuas hluav taws xob infrared. Qhov sib txawv ntawm ob lub teeb liab yog amplified los ntawm inverse amplifier thiab tswj qhov kub thiab txias ntawm lub tswv yim qhov chaw, kom lub spectral radiation brightness ntawm lub tswv yim qhov chaw yog tib yam li lub spectral radiation brightness ntawm cov khoom. Cov zaub qhia qhov ci ntsa iab ntawm qhov khoom raug ntsuas. Infrared tus pas ntsuas kub ntsuas los ntawm cov khoom siv hluav taws xob kub ntau dua li qhov ntsuas kub ntawm qhov khoom, vim tias lub cev dub tsis muaj nyob, ntawm qhov ntsuas kub tib yam hauv cov khoom siv hluav taws xob tiag tiag yog ib txwm tsawg dua li tag nrho cov hluav taws xob hluav taws xob los ntawm qhov tseeb. lub cev dub, yog li tus ntsuas kub infrared ntsuas kub yuav tsum yeej tsawg dua qhov ntsuas kub ntawm qhov khoom. Kev ntsuas kub yuav tsum nyob deb npaum li qhov ua tau los teeb tsa lub ntsuas kub infrared emissivity (rau adjustable emissivity ntawm tus pas ntsuas kub infrared) mus rau tib tus nqi emissivity ntawm emissivity ntawm cov khoom raug ntsuas, kom deb li deb raws li qhov ua tau kom ntsuas tus nqi ntawm cov khoom ntsuas. qhov ntsuas kub ntawm qhov khoom yuav tsum ntsuas tib yam.
Tus pas ntsuas kub infrared tam sim no tau siv dav, tau dhau los ua cov cuab yeej tseem ceeb rau kev kuaj xyuas cov khoom siv hluav taws xob. Raws li kev siv lub sij hawm ntev hauv cov kab ntau lawm, kev ntsuam xyuas ntawm qhov chaw ntawm cov chaw nres tsheb, cov khoom siv hluav taws xob hluav taws xob sib txuas, T-hom hlau clips, los ntawm cov phab ntsa casing pob qij txha, lub tsheb npav, riam rooj tog txiav, cable txuas; Cov kab sib txuas, xaim txuas lub raj, xaim clips lossis xaim txuas. Vim qhov kev siv tsis zoo ntawm thaj chaw ib puag ncig thiab kev saib xyuas tsis tu ncua yuav ua rau kev ua haujlwm ntawm lub ntsuas kub infrared tsis tuaj yeem ntsuas qhov tseeb lossis txawm tias cov cuab yeej tsis ua haujlwm, ua rau kev ntsuas tsis raug, cuam tshuam rau kev nyab xeeb thiab ruaj khov ntawm daim phiaj hluav taws xob. Nyob rau hauv daim ntawv no, raws li lub hauv paus ntsiab lus ntawm infrared kub ntsuas nyob rau hauv lub lag luam ntawm infrared tus pas ntsuas kub nws tus kheej-calibration txoj kev, yooj yim thiab yooj yim mus use, kev siv cov units yuav ua tau raws li cov qauv no ntawm tus kheej-calibration khoom, nyob rau hauv lub teb ua ntej lub kev ntsuam xyuas ntawm tus pas ntsuas kub infrared nws tus kheej-calibration sib piv, los txiav txim seb lub ntsuas kub infrared puas nyob rau hauv lub xeev ntawm kev ua haujlwm zoo, koj tuaj yeem ua tiav qhov kev sim ua haujlwm, txhawm rau txo qis kev nyab xeeb.
