Kev ua haujlwm thiab qhov tseem ceeb ntawm tus pas ntsuas kub infrared
Hauv qhov xwm txheej, txhua yam khoom uas muaj qhov kub siab tshaj xoom yog tas li emitting infrared hluav taws xob hluav taws xob mus rau qhov chaw nyob ib puag ncig. Lub hom phiaj ntawm tus pas ntsuas kub infrared yog tsom rau qhov kho qhov muag ntawm lub hom phiaj infrared hluav taws xob hluav taws xob 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 nws txoj haujlwm. Thiab 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.
Tus nqi ntawm infrared hluav taws xob hluav taws xob ntawm ib yam khoom thiab nws qhov kev faib tawm los ntawm wavelength yog ze ze rau nws qhov kub thiab txias. Yog li, los ntawm kev ntsuas lub zog infrared radiated los ntawm cov khoom nws tus kheej, nws qhov kub thiab txias tuaj yeem ntsuas qhov tseeb. Qhov no yog lub hom phiaj ntawm lub hauv paus ntawm qhov ntsuas kub ntawm infrared radiation.
Yuav luag txhua yam khoom tiag tiag uas muaj nyob hauv qhov tsis yog lub cev dub. Lub cev dub yog lub tshuab hluav taws xob zoo tshaj plaws uas nqus cov hluav taws xob hluav taws xob ntawm tag nrho cov wavelengths, tsis muaj kev xav lossis kev xa tawm ntawm lub zog, thiab muaj qhov emissivity ntawm 1 ntawm nws qhov chaw.
Tus nqi hluav taws xob ntawm tag nrho cov khoom 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.
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 hluav taws xob nyob rau hauv ob bands.
Raws li txoj cai hluav taws xob, tsuav yog peb paub qhov emissivity ntawm cov khoom, peb tuaj yeem paub cov yam ntxwv ntawm hluav taws xob infrared ntawm txhua yam khoom. Cov yam tseem ceeb uas cuam tshuam rau emissivity yog: hom khoom, nto roughness, lub cev thiab tshuaj qauv, thiab cov khoom thickness.
