不同非均匀性校正温度的红外测温技术

张晓龙; 刘英; 王健; 周昊; 孙强

doi:10.3788/CO.20140701.0150

Volume 7 Issue 1

Jan. 2014

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Chinese Optics > 2014 > 7(1): 150-155.

ZHANG Xiao-long, LIU Ying, WANG Jian, ZHOU Hao, SUN Qiang. Infrared thermometry technology with different nonuniformity correction temperatures[J]. Chinese Optics, 2014, 7(1): 150-155. doi: 10.3788/CO.20140701.0150

Citation:

ZHANG Xiao-long, LIU Ying, WANG Jian, ZHOU Hao, SUN Qiang. Infrared thermometry technology with different nonuniformity correction temperatures[J]. Chinese Optics, 2014, 7(1): 150-155. doi: 10.3788/CO.20140701.0150

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Infrared thermometry technology with different nonuniformity correction temperatures

doi: 10.3788/CO.20140701.0150

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 11 Oct 2013
Rev Recd Date: 13 Dec 2013
Publish Date: 25 Jan 2014

Abstract

Abstract

In order to keep high accuracy of temperature measurement of the cooled medium-wave infrared thermal imager after nonuniformity correction under different ambient temperatures, the calibration model of the medium-wave infrared thermal imager is analyzed with the consideration of the effect of the nonuniformity correction temperature. The nonuniformity of thermal imager is corrected using surface blackbody under different temperatures. The relationship between the gray and blackbody radiance is obtained by thermometry experiment of blackbody target. The mathematical calculation model of target temperature is established and the error of thermometry result is analyzed. The results show that the drift of gray of thermal image as nonuniformity correction radiance under different correction temperatures can be treated linearly, and is independent on the target temperature. When the nonuniformity is low, the temperature measurement error of the thermal imager is less than 0.22 ℃, which greatly reduces the temperature measurement error of the cooled medium-wave infrared thermal imager after nonuniformity correction under different correction temperatures.
- nonuniformity correction,
- cooled,
- medium-wave infrared thermal imager,
- infrared temperature measurement

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