Cov nplaim hluav taws xob emission rau infrared ntsuas kub
Ib qho kev ntsuas infrared tau txais cov ntaub ntawv ntsuas kub los ntawm kev ntsuas lub zog hluav taws xob infrared nyob rau saum npoo ntawm cov khoom siv hluav taws xob. Thiab nyob rau hauv cov ntaub ntawv uas lub infrared diagnostic instrument tau txais tib lub infrared hluav taws xob hluav taws xob lub zog los ntawm lub hom phiaj, txawv nrhiav kom tau raws li qhov sib txawv deg emissivity ntawm lub hom phiaj. Qhov ntawd yog hais tias, nrog tib lub zog hluav taws xob, qhov qis dua qhov emissivity, qhov siab dua qhov kub tso tawm. Qhov emissivity ntawm ib qho khoom nto yog txiav txim siab los ntawm nws cov khoom siv thiab lub xeev ntawm qhov chaw (xws li oxidation saum npoo, txheej khoom, roughness, thiab kab mob sib kis). Yog li ntawd, txhawm rau ntsuas qhov ntsuas kub ntawm cov khoom siv hluav taws xob kom raug siv cov cuab yeej ntsuas hluav taws xob infrared, nws yog ib qho tsim nyog yuav tsum paub txog tus nqi emissivity ntawm lub hom phiaj kuaj thiab muab cov nqi no los ua qhov tseem ceeb rau kev ntsuas kub rau hauv lub computer lossis kho tus nqi kho qhov ntsuas ε ntawm infrared ntsuas ntsuas, txhawm rau kho qhov emissivity ntawm qhov ntsuas qhov ntsuas qhov ntsuas kub. Ob qhov kev ntsuas los tshem tawm cov kev cuam tshuam ntawm emissivity ntawm kev tshawb pom cov txiaj ntsig yog: thaum siv ib qho infrared thermal imager rau kev ntsuas, emissivity yuav tsum raug kho los ntawm kev txheeb xyuas tus nqi emissivity ntawm qhov chaw ntawm cov khoom siv tshuaj ntsuam xyuas, txhawm rau kom tau txais kev ntsuas kub zoo thiab txhim kho kev ntseeg tau ntawm kev kuaj pom; Rau cov khoom siv uas tsis tshua muaj kev ua haujlwm tsis zoo hauv kev tshawb pom infrared, txhawm rau txhawm rau ua kom muaj txiaj ntsig zoo ntawm kev tshawb pom, cov txheej txheem ntawm kev siv cov xim tsim nyog tuaj yeem siv los ua kom muaj zog thiab ruaj khov rau lawv cov emissivity qhov tseem ceeb, txhawm rau kom tau txais qhov tseeb qhov kub ntawm qhov chaw ntawm cov khoom siv kuaj.
Txoj kab nqes yog qhov piv ntawm emissivity nyob rau hauv monochrome broadband kub ntsuas hom rau emissivity nyob rau hauv monochrome nqaim band kub ntsuas hom, uas yog siv los xam qhov ntsuas kub nyob rau hauv dual xim kub ntsuas hom. Vim qhov tsis muaj peev xwm kho qhov emissivity ntawm txoj kab nqaim, nws yog xam los ntawm kev faib cov monochromatic broadband emissivity los ntawm tus nqi nqes hav.
Yog tias koj yuav tsum tau them sai sai rau qhov ntsuas qhov nqaim, kho txoj kab nqes thiab broadband emissivity kom qhov nqaim emissivity ntau dua 1.00 (lossis tsawg dua 0.10).
Emissivity yog ib qho kev ntsuas ntawm ib qho khoom muaj peev xwm los tawm cov hluav taws xob infrared. Tus nqi no tuaj yeem nyob ntawm 0 (daim iav) txog 1.0 (blackbody). Yog tias qhov teeb tsa emissivity ntau dua li qhov tseeb emissivity, kev nyeem ntawv ntawm lub taub hau sensor yuav qis dua. Piv txwv li, yog tias qhov tseeb emissivity ntawm ib yam khoom yog 0.9 thiab tus nqi teev yog 0.95, qhov ntsuas kub yuav qis dua.
