Dab tsi yog lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub cev ntsuas kub infrared?
Kev ntsuas qhov ntsuas kub ntawm Infrared Thermometer
Lub hauv paus ntsiab lus ntawm infrared ntsuas kub ntsuas kub yog los hloov cov hluav taws xob hluav taws xob ntawm infrared emitted los ntawm cov khoom ntsuas mus rau hauv hluav taws xob teeb liab. Tus nqi ntawm cov hluav taws xob hluav taws xob infrared muaj feem xyuam rau qhov kub ntawm cov khoom nws tus kheej, thiab qhov kub ntawm cov khoom tuaj yeem txiav txim siab los ntawm kev hloov nws mus rau hauv hluav taws xob teeb liab. Tag nrho cov khoom saum toj kawg nkaus xoom yuav tawm hluav taws xob infrared ntawm lawv tus kheej. Lub luag haujlwm ntawm lub ntsuas kub infrared yog txhawm rau sau cov hluav taws xob infrared tawm los ntawm cov khoom, thiab nws yuav tsis tawm ib qho teeb meem hluav taws xob txhua, yog li nws tsis muaj teeb meem rau tib neeg lub cev. Qee tus neeg to taub yuam kev tias tus ntsuas kub infrared emits hluav taws xob rau tib neeg lub cev los tsim kev nyeem ntawv, uas yog kev xav tsis zoo.
Kev ntsuas kub emissivity ntawm infrared tus pas ntsuas kub
Blackbody yog lub tshuab hluav taws xob zoo tshaj plaws uas nqus cov hluav taws xob hluav taws xob ntawm tag nrho cov wavelengths yam tsis muaj kev xav lossis kev xa tawm ntawm lub zog. Nws qhov emissivity saum npoo yog 1. Txawm li cas los xij, yuav luag txhua yam khoom muaj nyob hauv qhov tsis yog blackbodies. Yuav kom nkag siab thiab tau txais txoj cai kev faib tawm ntawm cov hluav taws xob infrared, nws yog ib qho tsim nyog yuav tsum xaiv tus qauv tsim nyog hauv kev tshawb fawb theoretical, uas yog tus qauv oscillator quantized ntawm lub cev kab noj hniav hluav taws xob tau npaj los ntawm Planck. Qhov no ua rau txoj cai ntawm Planck blackbody hluav taws xob, uas yog spectral radiance ntawm blackbodies qhia nyob rau hauv wavelength. Qhov no yog qhov pib ntawm tag nrho infrared radiation theories, yog li txoj cai blackbody hluav taws xob. Tus nqi hluav taws xob ntawm tag nrho cov khoom tiag tiag tsis yog nyob ntawm lub wavelength ntawm cov hluav taws xob 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, deg lub xeev, thiab ib puag ncig tej yam kev mob uas ua rau cov khoom siv. khoom. Yog li ntawd, txhawm rau txhawm rau txoj cai lij choj ntawm lub cev hluav taws xob siv rau txhua yam khoom siv, nws yog ib qho tsim nyog yuav tsum ua kom paub qhov sib npaug ntawm cov khoom sib txuas nrog rau cov khoom siv thiab lub xeev saum npoo, uas yog emissivity. Qhov coefficient no sawv cev rau qhov sib thooj ntawm cov hluav taws xob hluav taws xob ntawm cov khoom siv tiag tiag thiab cov hluav taws xob lub cev dub, nrog tus nqi ntawm xoom thiab tus nqi tsawg dua 1. Raws li txoj cai ntawm hluav taws xob, tsuav yog qhov emissivity ntawm ib yam khoom paub, lub infrared. hluav taws xob yam ntxwv ntawm tej yam khoom yog paub. Cov yam tseem ceeb uas cuam tshuam rau emissivity yog cov khoom siv, nto roughness, physicochemical qauv, thiab cov khoom thickness. Thaum ntsuas tib neeg lub cev kub, qhov emissivity feem ntau hloov mus rau 0.95 rau qhov ntsuas kub kom raug.
Tib neeg infrared tus pas ntsuas kub
Tus pas ntsuas kub infrared siv los ntsuas tib neeg lub cev kub yog hu ua tib neeg lub cev infrared tus pas ntsuas kub. Txawm li cas los xij, nws yuav tsum tau qhia meej tias tsis muaj kev kho mob tshwj xeeb lossis kev lag luam infrared tus pas ntsuas kub, vim tias cov qauv tsim khoom ntawm cov ntsuas kub infrared zoo ib yam. Tsuas muaj qhov sib txawv ntawm cov high-precision, siab coefficient piv piv, high-performance infrared tus pas ntsuas kub, thiab high-precision, qis coefficient piv piv, thiab low-performance infrared thermometers. Ntev npaum li qhov emissivity ntawm tus pas ntsuas kub infrared tau teeb tsa rau 0.95 (qhov emissivity ntawm tib neeg daim tawv nqaij feem ntau yog tus nqi no, thiab txawm tias muaj qhov sib txawv, qhov cuam tshuam tsuas yog nyob rau hauv 0.3 degrees), nws ua tau raws li qhov xav tau ntawm tib neeg kev ntsuas kub. (Piv txwv li, txhua hom tsheb tuaj yeem khiav ntawm 40 km / h, thaum lub tsheb high-end yuav ncav cuag qhov ceev ntawm 200 km / h, tab sis tsis muaj qhov sib txawv ntawm cov tsheb uas tshwj xeeb khiav ntawm 40 km / h thiab cov tsheb tshwj xeeb. khiav ntawm 200 km / h, tsuas yog qhov sib txawv ntawm cov tsheb ua haujlwm siab thiab qis.)
