A Calibration Method Based on Dual Quadratic Fitting and Nine Parameters for Mining Non-Cooled Infrared Thermal Imager
Authors
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College of Electrical and Information Engineering, Hunan University, Changsha 410 082 ,CN
Ding Dehong -
Eado Monitoring Technology Co., Ltd., Zhuhai 519 085 ,CNCui Daijun
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Hunan Province Cooperative Innovation Center for The Construction & Development of Dongting Lake Ecological Economic Zone, Hunan University of Arts and Science, Changde 415 000 ,CNLi Ling
Keywords:
Mining Non-Cooled Infrared Thermal Imager, Dual Quadratic Fitting, Nine Parameters, Calibration Steps, Downhole Temperature, Anomalous Region.Abstract
Infrared detection method is mainly used to detect infrared energy field, through which the spontaneous combustion zone of coal can be comprehensively judged. In order to ensure the accuracy of the temperature of the test target under the mine, the paper mainly studies the calibration method of the uncooled infrared imager under the influence of the environment temperature, distance, the effect of the working temperature of the detector and the other factors. A new method of calibration model of dual quadratic fitting and the calibration equation of nine parameters method are proposed. Compared to existing methods, the proposed method is used to process the experiment, and it is concluded that the average error is within 1°C, which can meet the requirements of temperature measurement-thermal imaging under the mine.
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