Qhov cuam tshuam ntawm cov khoom emissivity ntawm hluav taws xob thermometry
Yuav luag txhua yam khoom tiag tiag uas muaj nyob hauv qhov tsis yog lub cev dub. Tus nqi hluav taws xob ntawm tag nrho cov khoom siv tiag tiag tsis yog nyob ntawm qhov hluav taws xob wavelength thiab qhov kub thiab txias ntawm cov khoom, tab sis kuj yog nyob ntawm cov khoom xws li hom khoom, kev npaj, txheej txheem thermal, lub xeev saum npoo thiab ib puag ncig ntawm cov khoom. Yog li ntawd, txhawm rau ua kom txoj cai dub lub cev hluav taws xob siv tau rau txhua yam khoom tiag, ib qho kev faib ua feem cuam tshuam nrog rau cov khoom siv thiab lub xeev saum npoo yuav tsum tau qhia, uas yog, emissivity. Qhov coefficient no txhais tau hais tias kaw qhov hluav taws xob hluav taws xob ntawm ib qho khoom tiag tiag rau lub cev hluav taws xob, thiab nws cov nqi yog nyob nruab nrab ntawm xoom thiab tus nqi tsawg dua 1. Raws li txoj cai hluav taws xob, tsuav yog qhov emissivity ntawm cov khoom paub, cov hluav taws xob infrared. Cov yam ntxwv ntawm txhua yam khoom tuaj yeem paub.
Cov yam tseem ceeb uas cuam tshuam rau emissivity yog: hom khoom, nto roughness, lub cev thiab tshuaj qauv, thiab cov khoom thickness.
Thaum siv lub ntsuas hluav taws xob hluav taws xob infrared los ntsuas qhov ntsuas kub ntawm lub hom phiaj, tus nqi ntawm cov hluav taws xob infrared ntawm lub hom phiaj nyob rau hauv nws cov qhab ntau yuav tsum tau ntsuas ua ntej, thiab tom qab ntawd qhov ntsuas kub ntawm lub hom phiaj ntsuas yog xam los ntawm tus pas ntsuas kub. Ib tus pas ntsuas kub ib leeg yog proportional rau tus nqi hluav taws xob nyob rau hauv lub band; ib tug ob-xim ntsuas kub yog proportional rau qhov piv ntawm tus nqi ntawm cov hluav taws xob nyob rau hauv ob bands.
Infrared system: Infrared tus pas ntsuas kub muaj qhov kho qhov muag, photoelectric detector, teeb liab amplifier, teeb liab ua, tso zis tso zis thiab lwm qhov chaw. Lub optical system sau lub hom phiaj infrared hluav taws xob hluav taws xob nyob rau hauv nws qhov kev pom. Qhov loj ntawm qhov kev pom yog txiav txim los ntawm qhov chaw kho qhov muag ntawm tus pas ntsuas kub thiab lawv txoj haujlwm. Lub zog infrared yog tsom rau lub photodetector thiab hloov mus rau hauv cov teeb liab hluav taws xob sib xws. Lub teeb liab dhau los ntawm lub amplifier thiab teeb liab ua Circuit Court, thiab hloov mus rau hauv tus nqi kub ntawm qhov ntsuas lub hom phiaj tom qab kho raws li kev kho sab hauv algorithm ntawm qhov ntsuas thiab lub hom phiaj emissivity.
