Yuav ua li cas ua kom infrared ntsuas kub ntsuas qhov tseeb dua
I. Calibration ntawm cov ntsuas kub infrared
Hais lus nruj me ntsis, lub calibration ntawm infrared tus pas ntsuas kub, siv lub blackbody. Vim tias lub cev dub tuaj yeem nqus tau lub zog ntawm lub zog, thiab tag nrho cov hluav taws xob tawm, nrog lub ntsuas kub infrared los xyuas qhov kub ntawm lub cev dub, tsis muaj zog poob, qhov ntsuas kub yog qhov tseeb. Tab sis nyob rau hauv qhov xwm txheej, lub cev dub yog qhov zoo tshaj plaws, thiab tsis muaj tiag, tsuas yog nrog cov khoom siv dub, xws li blackbody rauv kom ntsuas qhov ntsuas kub infrared, kho, ntsuas los ntawm lub qhov cub dub tom qab lub ntsuas kub infrared, nws cov txiaj ntsig ntsuas yuav nyob ze rau ntawm tus nqi tseeb.
Qhov thib ob, hauv kev xyaum, qhov tseeb txheej ntawm infrared tus pas ntsuas kub emissivity
Nws tau pom tias cov khoom lub zog radiant tsis yog tsuas yog cuam tshuam nrog lub wavelength thiab kub ntawm cov hluav taws xob hluav taws xob, tab sis kuj nrog cov khoom ntawm tus kheej cov khoom muaj kev sib raug zoo, thiab yog li qhia lub tswv yim ntawm cov khoom emissivity. Lub emissivity ntawm ib tug blackbody yog 1.0, uas txhais tau hais tias tag nrho cov nqus thiab tag nrho cov hluav taws xob; qhov tseeb khoom emissivity tsawg dua 1.0, uas txhais tau hais tias ib feem ntawm qhov nqus thiab ib feem ntawm cov hluav taws xob. Raws li txoj cai lij choj blackbody hluav taws xob, yog tias peb paub qhov emissivity ntawm cov khoom, peb tuaj yeem paub cov khoom siv hluav taws xob infrared. Hauv kev xyaum, peb yuav tsum ntsuas lub ntsuas kub infrared yooj yim kom pom qhov emissivity ntawm cov khoom. Qhov tseeb emissivity yuav ua rau ntsuas qhov ntsuas kub ntau dua.
1, qhov ntsuas kub ntawm qhov khoom ntsuas nrog qhov ntsuas kub ntawm qhov ntsuas ntsuas raws li kev siv, thiab tom qab ntawd siv tus ntsuas kub infrared los ntsuas qhov kub ntawm cov khoom, thiab kho qhov emissivity, kom qhov kub ntawm lub ntsuas kub infrared yog tib yam siv qhov ntsuas kub, thaum lub sij hawm emissivity yog emissivity ntawm lub hom phiaj raug ntsuas.
2, qhov saum npoo ntawm cov khoom yuav tsum tau ntsuas dub, thiab tom qab ntawd tus pas ntsuas kub infrared emissivity hloov mus rau 0.98, ntsuas qhov kub ntawm thaj tsam blackened raws li kev siv. Tom qab ntawd siv tus pas ntsuas kub infrared los ntsuas qhov ntsuas kub ntawm qhov chaw nyob ib sab ntawm thaj chaw blackened, kho cov emissivity kom txog rau thaum qhov ntsuas kub ntawm tus pas ntsuas kub thiab qhov ntsuas kub qhia tau zoo ib yam. Lub sijhawm no, emissivity yog emissivity ntawm cov khoom ntsuas.
