Real-time calibration technology of non-contact material surface temperature based on laser and multispectral inversion

Radiation temperature measurement is a non-contact temperature measurement method based on the thermal radiation characteristics of objects. Obtaining the true temperature of the target by using the radiation temperature measurement method can not only ensure the safety and reliability of the testin...

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Bibliographic Details
Published in:Journal of physics. Conference series Vol. 3085; no. 1; pp. 12034 - 12047
Main Authors: Zhu, Zhaohui, Zhan, Chunlian, Gan, Han
Format: Journal Article
Language:English
Published: Bristol IOP Publishing 01.08.2025
Subjects:
Algorithms
Carbon dioxide
Carbon dioxide lasers
Emissivity
Measurement methods
Modulation
Radiation
Real time
Surface temperature
Temperature distribution
Temperature measurement
Thermal radiation
ISSN:1742-6588, 1742-6596
Online Access:Get full text
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Summary:Radiation temperature measurement is a non-contact temperature measurement method based on the thermal radiation characteristics of objects. Obtaining the true temperature of the target by using the radiation temperature measurement method can not only ensure the safety and reliability of the testing process, but also significantly improve the temperature measurement accuracy. However, this method is greatly affected by factors such as the environment and test conditions. To address this issue, this paper proposes a radiation temperature measurement method based on laser modulation to calibrate parameters such as emissivity, reflectance, and gas transmittance of the material surface in real time, and combines the radiation temperature field inversion algorithm to obtain the true temperature of the material surface. Research shows that under the modulation of CO 2 lasers, the corresponding emissivity values can be obtained in real time according to the changes in surface temperature, and then the real-time temperature values can be calculated through the temperature inversion algorithm.
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ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/3085/1/012034