Vim li cas cov qib ntawm cov koob yees duab thermal feem ntau cuam tshuam nrog pixels?
1. Pixels
Ua ntej tshaj plaws, nws yog ib qho tsim nyog los txiav txim siab qib pixel ntawm infrared thermal imager yuav, thiab qib ntawm feem ntau infrared thermal imagers muaj feem xyuam rau pixel. Cov khoom lag luam siab kawg hauv pej xeem thermal imaging koob yees duab muaj pixels ntawm 640*480=307,200. Cov duab infrared coj los ntawm high-end thermal imaging lub koob yees duab no meej thiab muag heev, thiab qhov tsawg kawg nkaus ntsuas ntawm 12 meters yog 0.5 * 0.5cm; Lub pixel ntawm thermal imager yog 320 * 240=76,800, thiab qhov tsawg kawg nkaus ntsuas ntawm 12 meters yog 1 * 1cm; lub pixel ntawm qhov tsawg kawg infrared thermal imager yog 160 * 120=19, 200, ntsuas ntawm 12 meters Qhov tsawg kawg nkaus yog 2 * 2cm. Qhov siab dua qhov pom pixels, qhov me me qhov tsawg kawg nkaus ntawm lub hom phiaj uas tuaj yeem thaij duab:
2. Kev ntsuas kub thiab ntsuas qhov khoom
Txiav txim siab qhov ntsuas kub ntawm qhov ntsuas kub raws li qhov ntsuas kub ntawm cov khoom ntsuas los xaiv lub koob yees duab infrared thermal imaging nrog qhov ntsuas kub uas haum. Feem ntau ntawm cov koob yees duab thermal imaging tam sim no nyob rau hauv kev ua lag luam tau muab faib ua ob peb qhov kub thiab txias, xws li -40-120 degree thiab 0-500 degree . Nws tsis yog tias qhov loj dua ntawm qhov ntsuas kub, qhov zoo dua. Qhov me me ntawm qhov ntsuas kub ntau, qhov ntsuas qhov ntsuas kub ntau dua yuav raug. Tsis tas li ntawd, thaum lub dav hlau infrared thermal imager xav tau los ntsuas cov khoom siab tshaj 500 degree, nws yuav tsum tau nruab nrog lub lens sib xws.
3. Kev daws teeb meem kub
Qhov kev daws teeb meem ntawm qhov kub thiab txias qhia txog qhov kub thiab txias ntawm ib qho infrared thermal imager. Qhov kev daws teeb meem me me, qhov pom tseeb dua qhov infrared thermal imager perceives qhov kub hloov. Thaum xaiv, sim xaiv cov khoom lag luam nrog tus nqi me me ntawm qhov ntsuas no. Lub hom phiaj tseem ceeb ntawm infrared thermal imager los ntsuas cov khoom ntsuas yog kom paub qhov ntsuas kub ntawm qhov ntsuas kub ntawm qhov sib txawv. Nws tsis yog qhov tseem ceeb heev los ntsuas qhov ntsuas kub ntawm ib qho taw tes. Lub hom phiaj tseem ceeb yog txhawm rau nrhiav qhov chaw kub ntawm qhov sib txawv ntawm qhov kub thiab txias thiab ua lub luag haujlwm ntawm kev kho ua ntej. .
4. Spatial daws teeb meem
Txhawm rau muab nws yooj yim, qhov me me ntawm qhov kev daws teeb meem me me yog, qhov siab dua qhov kev daws teeb meem yog, qhov tseeb qhov ntsuas qhov ntsuas kub ntau dua, thiab qhov me dua qhov kev daws teeb meem me me, lub hom phiaj me tshaj plaws yuav tsum tau sim tuaj yeem npog cov pixels ntawm thermal. imager, thiab qhov ntsuas kub ntawm qhov ntsuas yog qhov ntsuas kub ntawm lub hom phiaj ntsuas. kub tiag tiag. Yog tias tus nqi daws teeb meem loj dua, qhov kev daws teeb meem spatial qis dua, thiab lub hom phiaj me tshaj plaws uas yuav tsum tau sim tsis tuaj yeem npog tag nrho cov pixels ntawm infrared thermal imager, thiab lub hom phiaj ntsuas yuav cuam tshuam los ntawm nws cov hluav taws xob ib puag ncig. Qhov ntsuas kub yog qhov ntsuas kub ntawm lub hom phiaj ntsuas thiab nws qhov chaw nyob ib puag ncig. Qhov nruab nrab kub ntawm, tus nqi tsis raug txaus. Saib qhov kev sib piv hauv qab no:
Rau siab spatial daws teeb meem, qhov ntsuas kub ntawm qhov ntsuas taw tes yog qhov tseeb dua; qhov spatial daws teeb meem ntawm daim duab yog tsawg, qhov ntsuas kub yog qhov nruab nrab ntawm qhov ntsuas qhov taw tes thiab nws qhov chaw nyob ib puag ncig, thiab qhov ntsuas kub tsis raug.
5. Kub stability
Lub hauv paus tseem ceeb ntawm lub koob yees duab infrared thermal imaging yog lub ntsuas infrared. Tam sim no, muaj ob hom kev ntes, uas yog vanadium oxide siv lead ua thiab polysilicon ntes. Lub ntsiab kom zoo dua ntawm vanadium oxide ntes yog tias MFOV (Kev Ntsuas Field of View) ntawm qhov ntsuas kub yog 1, thiab qhov ntsuas kub yog qhov tseeb rau 1 pixel. Rau Amorphous Silicon sensor, MFOV yog 9, uas yog, qhov kub ntawm txhua qhov taw tes tau txais raws li qhov nruab nrab ntawm 3 × 3=9 pixels. Lub vanadium oxide detector muaj qhov kub thiab txias stability, lub neej ntev thiab me me kub drift.
6. Kev sib xyaw ua haujlwm ntawm infrared thiab pom lub teeb duab
Yog tias cov duab infrared thiab pom lub teeb pom kev sib xyaw ua ke thiab tso tawm, ntau txoj haujlwm yuav raug txo. Qhov tsis paub qhov hotspots hauv daim duab infrared tuaj yeem txiav txim siab raws li cov duab pom lub teeb, thiab cov ntawv tshaj tawm tsis siv neeg kuj tseem yuav txo tau lub sijhawm ua haujlwm.
Xya, kev pab cuam tom qab muag thiab kev calibration tsis tu ncua
Infrared thermal imaging koob yees duab yuav tsum tau siv blackbody hluav taws xob calibration qhov chaw rau qhov kub thiab txias calibration txhua ob peb xyoos los xyuas kom meej qhov tseeb ntawm qhov ntsuas kub, uas yuav tsum tau cov neeg muag khoom kom muaj zog tom qab-muag kev pab cuam thiab calibration kev pab cuam. FLIR tau qhib cov ceg ntoo hauv Shanghai, Beijing, Guangzhou, thiab Chengdu hauv Suav teb, thiab muaj qhov chaw pabcuam tomqab muag hauv Shanghai los muab kev pabcuam tomqab muag thiab ntsuas kev pabcuam rau cov neeg siv khoom suav.
