Txoj Cai Ua Haujlwm thiab Kev Siv Infrared Thermometer
Infrared Basic Theory
Xyoo 1672, nws tau pom tias lub hnub ci (dawb lub teeb) yog tsim los ntawm ntau yam xim. Tib lub sijhawm, Newton tau txiav txim siab tias lub teeb monochromatic yog qhov yooj yim dua li lub teeb dawb. Siv lub dichroic prism kom decompose hnub ci (dawb lub teeb) rau hauv monochromatic teeb liab, txiv kab ntxwv, daj, ntsuab, xiav, xiav, ntshav, thiab lwm yam. Nyob rau hauv 1800, tus British physicist FW Huxel nrhiav pom infrared rays thaum nws kawm ntau yam xim xim ntawm lub teeb. thermal point of view. Thaum nws tab tom kawm txog cua sov ntawm ntau yam xim ntawm lub teeb, nws txhob txwm thaiv lub qhov rais nkaus xwb ntawm chav tsaus ntuj nrog ib lub phaj tsaus, thiab qhib ib lub qhov nyob rau hauv lub phaj, thiab lub beam splitter prism tau ntsia rau hauv lub qhov. Thaum tshav ntuj dhau los ntawm lub prism, nws yog decomposed mus rau hauv cov xim lub teeb bands, thiab ib tug pas ntsuas kub yog siv los ntsuas cov cua sov uas muaj nyob rau hauv txawv xim nyob rau hauv lub teeb bands. Txhawm rau sib piv nrog qhov kub thiab txias, Huxel siv ntau lub ntsuas kub tso rau ze ntawm lub teeb xim xim raws li cov ntsuas kub sib piv los ntsuas qhov ntsuas kub ntawm qhov chaw. Thaum lub sijhawm sim, nws tau pom qhov tshwm sim txawv txawv: tus pas ntsuas kub tso rau sab nraum lub teeb liab liab muaj tus nqi siab dua li lwm qhov kub hauv chav. Los ntawm kev sim thiab kev ua yuam kev, qhov no hu ua qhov chaw kub kub uas muaj cua sov tshaj plaws yog ib txwm nyob sab nraum lub teeb liab ntawm ntug ntawm lub teeb band Z. Yog li nws tshaj tawm tias ntxiv rau qhov pom lub teeb, kuj tseem muaj "kab kub. " pom tsis tau rau tib neeg lub qhov muag hauv cov hluav taws xob tawm los ntawm lub hnub. Qhov no tsis pom "kub kab" nyob sab nraum lub teeb liab thiab hu ua lub teeb infrared. Infrared yog ib hom electromagnetic yoj, uas muaj tib lub ntsiab lus raws li xov tooj cua tsis thiab pom lub teeb. Qhov kev tshawb pom ntawm infrared yog kev dhia hauv tib neeg kev nkag siab ntawm qhov xwm txheej, thiab nws tau qhib txoj hauv kev tshiab rau kev tshawb fawb, kev siv thiab kev loj hlob ntawm infrared technology.
Lub wavelength ntawm infrared rays nyob nruab nrab ntawm 0.76 thiab 100 μm. Raws li lub wavelength ntau, nws tuaj yeem muab faib ua plaub pawg: ze infrared, nruab nrab infrared, deb infrared, thiab huab cua infrared. Nws txoj hauj lwm nyob rau hauv qhov nruam spectrum ntawm electromagnetic tsis yog thaj tsam ntawm xov tooj cua tsis thiab pom lub teeb. . Infrared hluav taws xob yog ib qho ntawm cov hluav taws xob hluav taws xob ntau tshaj plaws hauv qhov xwm txheej. Nws yog raws li qhov tseeb tias txhua yam khoom yuav tsim nws tus kheej molecular thiab atomic irregular motions nyob rau hauv ib tug pa ib puag ncig, thiab tsis tu ncua radiate thermal infrared zog, molecules thiab atoms. Lub zog ntau dua, qhov ntau dua lub zog hluav taws xob, thiab rov ua dua, qhov me dua lub zog hluav taws xob.
Cov khoom uas muaj qhov kub siab tshaj xoom yuav tawg cov kab hluav taws xob infrared vim lawv tus kheej molecular motion. Tom qab lub hwj chim teeb liab radiated los ntawm cov khoom yog hloov dua siab tshiab rau hauv ib tug hluav taws xob teeb liab los ntawm lub infrared detector, cov zis teeb liab ntawm lub imaging ntaus ntawv yuav kiag li simulate spatial faib ntawm qhov kub thiab txias ntawm lub scanned khoom ib tug los ntawm ib tug. Tom qab ua tiav los ntawm lub tshuab hluav taws xob, nws raug xa mus rau lub vijtsam zaub thiab tau txais cov duab thermal sib raug rau cov cua sov faib rau saum npoo ntawm cov khoom. Siv cov qauv no, nws muaj peev xwm paub qhov ntev-ntev thermal lub xeev duab duab thiab ntsuas kub ntawm lub hom phiaj thiab tshuaj xyuas thiab txiav txim.
Thermal Imager Txoj Cai
Infrared thermal imager siv infrared detector, optical imaging lub hom phiaj lens thiab optical-mechanical scanning system (tam sim no advanced focal dav hlau technology oits optical-mechanical scanning system) kom tau txais lub infrared hluav taws xob hluav taws xob faib qauv ntawm lub hom phiaj ntsuas thiab xav txog nws mus rau lub photosensitive sensor. ntawm lub infrared detector. Ntawm lub hauv paus, nruab nrab ntawm lub tshuab kho qhov muag thiab lub ntsuas hluav taws xob infrared, muaj qhov kho qhov muag-mechanical scanning mechanism (lub focal dav hlau thermal imager tsis muaj lub tshuab no) txhawm rau luam theej duab infrared thermal duab ntawm cov khoom ntsuas thiab tsom mus rau chav tsev lossis lub spectroscopic ntes. Lub zog hluav taws xob infrared hloov mus rau hauv lub teeb liab hluav taws xob los ntawm lub ntsuas hluav taws xob, thiab cov duab hluav taws xob infrared tso tawm rau ntawm lub vijtsam TV lossis saib tom qab ua kom nrov nrov, hloov pauv, lossis cov teeb liab video txheem. Cov duab thermal zoo li no sib raug rau qhov chaw thermal faib rau ntawm qhov khoom; Nws yog qhov tseem ceeb ntawm cov duab thermal faib ntawm cov hluav taws xob infrared ntawm txhua qhov ntawm cov khoom ntsuas lub hom phiaj. Vim tias lub teeb liab tsis muaj zog heev, piv nrog cov duab pom lub teeb, nws tsis muaj txheej txheej thiab peb-dimensionality. Yog li ntawd, txhawm rau txiav txim siab lub tshav kub infrared ntawm qhov ntsuas lub hom phiaj zoo dua thaum lub sijhawm ua haujlwm tiag tiag, qee qhov kev pabcuam pabcuam feem ntau siv los ua kom cov kev ua haujlwm zoo ntawm cov cuab yeej, xws li cov duab ci ntsa iab, kev sib piv, kev kho tus qauv tiag, tsis tseeb. xim rendering thiab lwm yam technologies
Txoj kev loj hlob ntawm thermal imaging koob yees duab
Nyob rau hauv 1800, British physicist FW Huxel nrhiav infrared, uas qhib txoj kev dav rau tib neeg siv infrared technology. Hauv Ntiaj Teb Tsov Rog Thoob Ntiaj Teb thib 1, cov neeg German tau siv cov duab hluav taws xob hloov hluav taws xob los ua cov khoom siv hluav taws xob hloov hluav taws xob los tsim cov cuab yeej siv hluav taws xob hmo ntuj thiab cov khoom siv sib txuas lus infrared, uas tau tsim lub hauv paus rau kev txhim kho cov thev naus laus zis infrared.
Tom qab Tsov Rog Thoob Ntiaj Teb thib Ob, thawj tiam ntawm infrared imaging device rau tub rog teb tau tsim los ntawm Texas Instruments Corporation ntawm Tebchaws Meskas tom qab ze li ib xyoos ntawm kev tshawb fawb. Nws yog hu ua Infrared Finding System (FLIR), uas yog Siv lub tshuab kho qhov muag los soj ntsuam cov hluav taws xob infrared ntawm lub hom phiaj ntsuas. Lub photon detector tau txais cov cim qhia ntawm ob-dimensional infrared tawg, thiab tom qab photoelectric hloov dua siab tshiab thiab ib tug series ntawm cov cuab yeej ua, ib tug video duab teeb liab tsim. Tus thawj daim ntawv ntawm qhov system no yog ib tug tsis yog-lub sij hawm-lub sij hawm tsis siv neeg kub tis recorder. Tom qab ntawd, nrog kev txhim kho ntawm indium antimonide thiab germanium-doped mercury photon detectors nyob rau hauv 1950s, high-speed scanning thiab real-time zaub ntawm lub hom phiaj thermal dluab pib tshwm. qhov system.
