Deg emissions los ntawm infrared thermometers
Txhua qhov ntsuas infrared ntsuas yog ntsuas lub zog hluav taws xob infrared nyob rau saum npoo ntawm cov khoom siv hluav taws xob kom tau txais cov ntaub ntawv ntsuas kub ntawm cov khoom siv. Thiab nyob rau hauv cov ntaub ntawv ntawm infrared diagnostic instruments tau txais tib lub infrared hluav taws xob hluav taws xob lub zog los ntawm lub hom phiaj, vim qhov sib txawv emissivity ntawm qhov chaw ntawm lub hom phiaj, yuav tau txais txawv nrhiav tau. Qhov ntawd yog hais tias, rau tib lub zog radiant, qhov qis dua qhov emissivity, qhov siab dua qhov kub yuav tshwm sim. Lub emissivity ntawm qhov chaw ntawm cov khoom yog tsuas yog txiav txim los ntawm qhov xwm ntawm cov khoom thiab lub xeev ntawm nto (xws li oxidation ntawm nto, txheej txheej, roughness thiab av, thiab lwm yam). Yog li ntawd, txhawm rau ntsuas qhov ntsuas kub ntawm cov khoom siv hluav taws xob kom raug nrog 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 soj ntsuam thiab nkag mus rau tus nqi no rau hauv lub khoos phis tawj yog qhov tseem ceeb rau kev suav ntawm qhov kub thiab txias. ε- kho tus nqi ntawm lub ntsuas infrared ntsuas txhawm rau kho qhov emissivity ntawm qhov ntsuas qhov ntsuas kub tso zis. Tshem tawm qhov cuam tshuam ntawm emissivity ntawm kev tshawb pom cov txiaj ntsig ntawm lwm qhov kev tawm tsam yog: thaum siv lub koob yees duab infrared thermal imaging rau kev ntsuas, qhov emission yuav raug kho, nrhiav kom paub qhov emissivity tus nqi ntawm qhov ntsuas qhov saum npoo ntawm cov khoom siv rau kev kho emissivity, thiaj li. kom tau txais kev ntsuas qhov ntsuas kub zoo, txhim kho kev ntseeg tau ntawm kev kuaj pom; rau infrared nrhiav kom tau qhov txhaum-nrhiav qhov chaw ntawm cov cuab yeej, thiaj li yuav ua rau cov kev tshwm sim ntawm nrhiav kom tau ib tug zoo sib piv, yuav siv tau los thov kom tsim nyog rau infrared nrhiav kom tau qhov txhaum-ntau zaus cov khoom Cheebtsam, nyob rau hauv thiaj li yuav ua rau cov kev tshawb nrhiav tau muaj kev sib piv zoo, tuaj yeem siv los siv cov xim tsim nyog kom nce thiab ruaj khov tus nqi emissivity, thiaj li yuav tau txais qhov tseeb qhov kub thiab txias ntawm qhov chaw ntawm cov khoom nyob rau hauv kev sim.
Txoj kab nqes yog qhov piv ntawm cov emissivity nyob rau hauv monochrome broadband hom rau emissivity nyob rau hauv lub monochrome nqaim band hom, thiab yog siv nyob rau hauv ob-xim kub ntsuas hom los xam qhov ntsuas kub. Txij li thaum lub emissivity nyob rau hauv lub narrowband hom tsis tuaj yeem hloov kho, nws pom tau los ntawm kev faib cov monochrome broadband emissivity los ntawm tus nqi nqes hav.
Yog tias koj yuav tsum nco ntsoov qhov ntsuas qhov nqaim, ua kom qhov nqaim emissivity ntau dua 1.
Emissivity yog ib qho kev ntsuas ntawm ib yam khoom lub peev xwm los radiate lub teeb infrared. Tus nqi no tuaj yeem nyob ntawm {{0}}} (specular) mus rau 1.0 (blackbody), thiab yog tias qhov emissivity raug teeb tsa rau tus nqi ntau dua qhov tseeb emissivity, lub taub hau sensor yuav nyeem qis. . Piv txwv li, yog tias qhov tseeb emissivity ntawm ib yam khoom yog 0.9 thiab qhov chaw yog 0.95, qhov ntsuas kub yuav qis.
