Multispectral High Temperature Thermography
The paper considers the issues of creating high-temperature digital thermographs based on RGB photodetector arrays. It has been shown that increasing the reliability of temperature measurement of bodies with unknown spectral coefficient of thermal radiation can be ensured by optimal selection of the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/3/742 |
| _version_ | 1797484887774593024 |
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| author | Waldemar Wójcik Vladimir Firago Andrzej Smolarz Indira Shedreyeva Bakhyt Yeraliyeva |
| author_facet | Waldemar Wójcik Vladimir Firago Andrzej Smolarz Indira Shedreyeva Bakhyt Yeraliyeva |
| author_sort | Waldemar Wójcik |
| collection | DOAJ |
| description | The paper considers the issues of creating high-temperature digital thermographs based on RGB photodetector arrays. It has been shown that increasing the reliability of temperature measurement of bodies with unknown spectral coefficient of thermal radiation can be ensured by optimal selection of the used spectral range and registration of the observed thermal radiation fields in three spectral ranges. The registration of thermal radiation in four or more spectral ranges was found to be inefficient due to the increasing error in temperature determination. This paper presents a method for forming three overlapping spectral regions in the NIR spectral range, which is based on the use of an external spectral filter and a combination of the spectral characteristics of an RGB photodetector array. It is shown that it is necessary to ensure the stability of the solution of the system of three nonlinear equations with respect to the influence of noise. For this purpose, the use of a priori information about the slope factor of the spectral dependence of the thermal radiation coefficient in the selected spectral range for the controlled bodies is proposed. The theoretical results are confirmed by examples of their application in a thermograph based on an array of CMOS RGB photodetectors. |
| first_indexed | 2024-03-09T23:10:57Z |
| format | Article |
| id | doaj.art-a0557899f8024ccc8ff7914cf116cd8c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T23:10:57Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a0557899f8024ccc8ff7914cf116cd8c2023-11-23T17:44:34ZengMDPI AGSensors1424-82202022-01-0122374210.3390/s22030742Multispectral High Temperature ThermographyWaldemar Wójcik0Vladimir Firago1Andrzej Smolarz2Indira Shedreyeva3Bakhyt Yeraliyeva4Department of Electronics and Information Technology, Faculty of Electrical Engineering and Computer Science, Lublin University of Technology, Nadbystrzycka 38d, 20-618 Lublin, PolandDepartment of Quantum Radiophysics and Optoelectronics, Belarusian State University, 4 Nezavisimosti Avenue, 220030 Minsk, BelarusDepartment of Electronics and Information Technology, Faculty of Electrical Engineering and Computer Science, Lublin University of Technology, Nadbystrzycka 38d, 20-618 Lublin, PolandFaculty of Information Technology, M.Kh.Dulaty Taraz Regional University, Tole Bi St 40, Taraz 080000, KazakhstanFaculty of Information Technology, M.Kh.Dulaty Taraz Regional University, Tole Bi St 40, Taraz 080000, KazakhstanThe paper considers the issues of creating high-temperature digital thermographs based on RGB photodetector arrays. It has been shown that increasing the reliability of temperature measurement of bodies with unknown spectral coefficient of thermal radiation can be ensured by optimal selection of the used spectral range and registration of the observed thermal radiation fields in three spectral ranges. The registration of thermal radiation in four or more spectral ranges was found to be inefficient due to the increasing error in temperature determination. This paper presents a method for forming three overlapping spectral regions in the NIR spectral range, which is based on the use of an external spectral filter and a combination of the spectral characteristics of an RGB photodetector array. It is shown that it is necessary to ensure the stability of the solution of the system of three nonlinear equations with respect to the influence of noise. For this purpose, the use of a priori information about the slope factor of the spectral dependence of the thermal radiation coefficient in the selected spectral range for the controlled bodies is proposed. The theoretical results are confirmed by examples of their application in a thermograph based on an array of CMOS RGB photodetectors.https://www.mdpi.com/1424-8220/22/3/742temperature measurementthermographypyrometry methodsthermal radiation coefficientRGB matriceshigh-temperature thermal imaging |
| spellingShingle | Waldemar Wójcik Vladimir Firago Andrzej Smolarz Indira Shedreyeva Bakhyt Yeraliyeva Multispectral High Temperature Thermography Sensors temperature measurement thermography pyrometry methods thermal radiation coefficient RGB matrices high-temperature thermal imaging |
| title | Multispectral High Temperature Thermography |
| title_full | Multispectral High Temperature Thermography |
| title_fullStr | Multispectral High Temperature Thermography |
| title_full_unstemmed | Multispectral High Temperature Thermography |
| title_short | Multispectral High Temperature Thermography |
| title_sort | multispectral high temperature thermography |
| topic | temperature measurement thermography pyrometry methods thermal radiation coefficient RGB matrices high-temperature thermal imaging |
| url | https://www.mdpi.com/1424-8220/22/3/742 |
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