Qhov cuam tshuam ntawm cov khoom emissivity ntawm radiometric thermometry
Yuav luag txhua yam khoom tiag tiag uas muaj nyob hauv qhov tsis yog lub cev dub. Tus nqi hluav taws xob tawm los ntawm txhua yam khoom tiag yog nyob ntawm tsis yog nyob ntawm lub wavelength ntawm cov hluav taws xob hluav taws xob thiab qhov kub ntawm cov khoom, tab sis kuj nyob ntawm cov khoom xws li hom khoom tsim los ntawm cov khoom, cov txheej txheem ntawm kev npaj, txheej txheem thermal, thiab cov khoom siv hluav taws xob. lub xeev ntawm qhov chaw thiab ib puag ncig. Yog li ntawd, nyob rau hauv kev txiav txim rau tus dub leej twg txoj cai hluav taws xob kom raug rau txhua yam khoom tiag tiag, lub emissiving, lub emissiving, yuav tsum tau qhia txog qhov xwm txheej ntawm cov khoom thiab lub xeev. Qhov coefficient no qhia txog qhov sib ze ntawm cov hluav taws xob thermal ntawm cov khoom tiag tiag rau lub cev hluav taws xob, thiab muaj tus nqi ntawm xoom thiab tus nqi tsawg dua ib qho. Raws li txoj cai lij choj ntawm hluav taws xob, tsuav yog lub emissivity ntawm ib yam khoom yog paub, lub infrared radiation yam ntxwv ntawm ib yam khoom yog paub.
Lub ntsiab yam tseem ceeb cuam tshuam rau emissivity nyob rau hauv: hom khoom, nto roughness, lub cev thiab tshuaj qauv thiab cov khoom thickness.
Thaum siv cov ntsuas hluav taws xob hluav taws xob infrared los ntsuas qhov ntsuas kub ntawm lub hom phiaj ua ntej ntsuas lub hom phiaj hauv nws qhov band ntau ntawm cov hluav taws xob infrared, thiab tom qab ntawd los ntawm tus pas ntsuas kub los ntsuas qhov ntsuas kub ntawm lub hom phiaj yuav ntsuas. Ib leeg-xim pyrometer thiab tus nqi hluav taws xob nyob rau hauv lub band yog proportional; ob-xim pyrometer thiab qhov piv ntawm tus nqi hluav taws xob hauv ob pawg yog proportional.
Infrared system: tus pas ntsuas kub infrared los ntawm qhov system kho qhov muag, photodetector, teeb liab amplifier thiab teeb liab ua, tso tawm cov zis thiab lwm yam khoom. Optical system convergence ntawm nws daim teb ntawm kev pom ntawm lub hom phiaj infrared hluav taws xob hluav taws xob, qhov loj ntawm qhov kev pom los ntawm pyrometer qhov chaw kho qhov muag thiab lawv qhov chaw los txiav txim. Lub zog infrared yog tsom rau lub photodetector thiab hloov mus rau hauv cov teeb liab hluav taws xob sib xws. Lub teeb liab hloov mus rau qhov ntsuas kub ntawm qhov ntsuas lub hom phiaj tom qab dhau los ntawm lub tshuab hluav taws xob thiab cov teeb liab ua haujlwm thiab raug kho raws li algorithm thiab lub hom phiaj emissivity ntawm qhov ntsuas qhov kev kho sab hauv.
