Dab tsi yog infrared thermometer txoj cai thiab kev faib tawm
1, infrared txoj cai: txhua yam khoom ntev npaum li nws qhov kub siab tshaj ** xoom (-273 degree C), muaj cov hluav taws xob hluav taws xob tawm sab nraud, cov khoom kub sib txawv, lub zog hluav taws xob kuj txawv, thiab lub wavelength. ntawm cov hluav taws xob nthwv dej kuj txawv, tab sis ib txwm suav nrog cov hluav taws xob infrared, txhiab degrees Celsius hauv qab ntawm cov khoom, hluav taws xob hluav taws xob ntaus * lub zog electromagnetic yoj yog infrared yoj, yog li cov khoom nws tus kheej infrared radiation ntsuas, koj tuaj yeem txiav txim siab qhov kub ntawm nws. sab nrauv. Nws qhov kub thiab txias sab nraud, qhov no yog qhov ntsuas kub ntawm qhov ntsuas kub infrared raws li lub hom phiaj lub hauv paus thiab cov hauv paus ntsiab lus ntawm qhov laj thawj.
Blackbody yog ib hom ambition radiation lub cev, nws absorbs tag nrho cov wavelengths ntawm radiant zog, tsis muaj zog xav txog thiab kis tau tus mob, nws sab nraud emissivity yog 1. Txawm li cas los, lub hav zoov ntawm cov khoom tiag tiag nyob rau hauv lub ntuj ntiaj teb no, yuav luag tag nrho cov tsis yog ib tug blackbody, nyob rau hauv kev txiav txim. kom paub meej thiab tau txais cov infrared radiation diffusion kev qhuab qhia, nyob rau hauv txoj kev kawm theoretical yuav tsum tau xaiv kom tau raws li tus qauv, uas yog quantization ntawm Planck muab tso rau pem hauv ntej los ntawm lub cev kab noj hniav radiation oscillator modulus, uas ua rau lub derivation ntawm lub Planck txoj cai ntawm blackbody hluav taws xob. , uas yog, lub wavelength ntawm blackbody spectral radiance, uas yog qhov pib ntawm txoj kev xav ntawm infrared radiation, nws yog hu ua txoj cai ntawm blackbody hluav taws xob.
Tag nrho cov hluav taws xob ntawm cov khoom tiag tiag ntxiv rau lub wavelength ntawm cov hluav taws xob hluav taws xob thiab qhov kub thiab txias ntawm cov khoom, tab sis kuj nrog cov khoom ntawm cov khoom siv, kev npaj, txheej txheem thermal, nrog rau cov tsos ntawm lub xeev thiab cov xwm txheej xwm txheej thiab lwm yam. Yog li ntawd, txhawm rau ua kom txoj cai ntawm blackbody hluav taws xob siv tau rau txhua yam khoom tiag tiag, nws yog ib qho tsim nyog yuav tsum ua kom paub qhov sib npaug ntawm cov coefficient, piv txwv li, emissivity, uas cuam tshuam rau qhov xwm ntawm cov khoom thiab lub xeev ntawm sab nraud. Qhov coefficient no qhia txog theem ntawm qhov sib thooj ntawm cov hluav taws xob thermal ntawm ib yam khoom tiag tiag rau lub cev hluav taws xob, thiab nws cov nqi yog nyob nruab nrab ntawm 0 thiab 1. Raws li txoj cai ntawm hluav taws xob, tsuav yog peb paub qhov emissivity ntawm cov khoom. , peb paub cov yam ntxwv ntawm cov hluav taws xob infrared ntawm txhua yam khoom. Kev cuam tshuam cov emissivity ntawm qhov tseem ceeb ntawm cov xov paj hauv: cov khoom siv, nto roughness, lub cev thiab tshuaj layout thiab thickness ntawm cov khoom.
2, infrared tus pas ntsuas kub lub hauv paus ntsiab lus thiab layout: nyob rau hauv lub ntuj ntiaj teb no, kev sib sau ntawm qhov kub thiab txias siab tshaj ** xoom-degree cov khoom yog unceasingly mus rau qhov chaw nyob ib puag ncig kom xa tawm infrared hluav taws xob lub zog. Qhov loj ntawm cov khoom lub zog hluav taws xob infrared thiab nws qhov sib txawv ntawm lub wavelength, thiab nws qhov kub thiab txias sab nraud muaj kev sib raug zoo heev. Yog li ntawd, los ntawm kev ntsuas ntawm lub zog infrared radiated los ntawm cov khoom nws tus kheej, nws yuav muaj peev xwm txiav txim siab nws qhov kub thiab txias sab nraud, uas yog lub hauv paus rau kev ntsuas kub ntawm infrared radiation.
Infrared ntsuas kub ntsuas lub hauv paus ntsiab lus yog cov khoom (xws li steel) emission infrared radiation muaj cov hluav taws xob hluav taws xob hloov mus rau hauv hluav taws xob teeb liab, infrared hluav taws xob hluav taws xob thiab qhov loj ntawm cov khoom (xws li hlau) lawv tus kheej qhov kub thiab txias sib haum rau qhov loj ntawm cov teeb liab hluav taws xob. hloov mus rau qhov loj ntawm cov khoom (xws li hlau) tuaj yeem txiav txim siab qhov kub thiab txias. Infrared tus pas ntsuas kub los ntawm qhov system optical, photoelectric detector, teeb liab amplifier thiab teeb liab ua rau txim, kev ua tau zoo thiab lwm yam khoom. Optical system convergence ntawm nws daim teb ntawm kev pom ntawm lub hom phiaj ntawm infrared hluav taws xob hluav taws xob lub zog, lub teb ntawm kev pom ntawm qhov loj ntawm qhov chaw ntawm lub pyrometer thiab nws qhov chaw los txiav txim. Lub zog infrared tsom rau lub photodetector thiab hloov mus rau hauv cov teeb liab hluav taws xob sib xws. Lub teeb liab yog thim rov qab amplifier thiab teeb liab ua kev rau txim rau Circuit Court, thiab raws li qhov ntsuas nyob rau hauv kev kho algorithm thiab lub hom phiaj ntawm emissivity kho rau lub hom phiaj ntawm ntsuas kub tus nqi.
Thaum siv cov ntsuas hluav taws xob hluav taws xob infrared los ntsuas qhov ntsuas kub ntawm lub hom phiaj ntawm thawj qhov kev ntsuas ntawm lub hom phiaj ntawm cov hluav taws xob hluav taws xob infrared nyob rau hauv qhov ntsuas ntawm nws cov qhab, thiab ces xam los ntawm tus pas ntsuas kub kom ntsuas los ntawm lub hom phiaj ntawm qhov ntsuas kub. Infrared tus pas ntsuas kub raws li lub hauv paus ntsiab lus yuav muab faib ua monochrome pyrometer thiab dual-xim pyrometer (kua hluav taws xob tshaj li cov xim pyrometer), monochrome pyrometer thiab tus nqi hluav taws xob nyob rau hauv lub band yog proportional rau; dual-xim pyrometer thiab qhov piv ntawm tus nqi hluav taws xob ntawm ob pawg yog proportional.
3, kev loj hlob thiab kev faib tawm ntawm tus pas ntsuas kub infrared: infrared thermometry kev txawj ntse tau loj hlob kom muaj cov thermal hloov hauv cov tsos ntawm cov ntsuas kub ntsuas, los txiav txim siab nws qhov kub thiab txias diffusion duab, agile nrhiav pom qhov sib txawv ntawm qhov kub thiab txias, uas yog lub koob yees duab infrared thermal imaging. Infrared thermography pib siv rau hauv cov tub rog, Tebchaws Asmeskas TI tau tsim lub ntiaj teb thawj qhov kev ntsuas ntsuas hluav taws xob hauv ntiaj teb, thiab tom qab ntawd infrared thermography kev txawj ntse hauv Western lub teb chaws tau siv tsis tu ncua hauv dav hlau, tso tsheb hlau luam, nkoj nkoj thiab lwm yam riam phom, raws li kev tshawb nrhiav tsom rau ntawm thermal aiming system, kev vam meej ntawm kev yos hav zoov scavenger, ntaus lub hom phiaj lub peev xwm. Infrared tus pas ntsuas kub kwv yees li hauv qab no: (1) infrared point tus pas ntsuas kub: suav nrog ob yam khoom siv thiab khoom siv; (2) infrared scanner; (3) infrared thermal imaging lub koob yees duab.
