辐射换热角系数理论对红外辐射测温的优化

量子电子学报 ›› 2019, Vol. 36 ›› Issue (4): 490-494.

辐射换热角系数理论对红外辐射测温的优化

刘纯红¹,熊丹枫¹,张乐文²,吴海滨³

1合肥师范学院物理与材料工程学院，安徽合肥 230601； 2国网黄山供电公司，安徽黄山 245000； 3安徽省光电感测工程技术研究中心，安徽合肥 230601

收稿日期:2018-11-06 修回日期:2018-11-28 出版日期:2019-07-28 发布日期:2019-07-11
通讯作者: 刘纯红
作者简介:刘纯红（1982—），男，安徽怀宁，硕士，讲师，主要从事光电检测理论和产品的开发设计及信息处理方面的研究工作。 E-mail: 657840633@qq.com
基金资助:
Open project of The Research Center of Photoelectric Sensing Engineering Technology of Anhui Province（安徽省光电感测工程技术研究中心开放课题项目01001567-201605）； The AnHui's key research and development plan with scientific and technological research projects on the surface with 2018（安徽省2018重点研究与开发计划面上攻关项目1804a09020097）； Major projects of natural science research in Anhui Universities（安徽省高校自然科学研究重大项目KJ2017ZD56）

Algorithm optimization on temperature measurement of the infrared radiation via the theory of radiant heat transfer angle coefficient

Chun-Hong Liu[1], Dan-Feng Xiong[1] , Yong-Dong[2],Le-wen Zhang[3], Hai-Bin Wu[3]

1, The School of physics and materials engineering of Hefei Normal University, Hefei 230601 China; 2.State Grid Anhui Mount Huangshan Power Supply Company, Huangshan 245000 China ; 3.The Research Center of Photoelectric Sensing Engineering Technology of Anhui Province, Hefei 230601 China

Received:2018-11-06 Revised:2018-11-28 Published:2019-07-28 Online:2019-07-11

摘要/Abstract

摘要： 根据比尔定律，物体向周围空间的热辐射量分布与辐射方向成余弦关系，故在红外辐射测温系统中，由于被测目标与探测器的相对位置关系，导致探测器接收到的红外辐射量存在差异，对红外辐射测温带来误差。首先，计算目标空间位置与探测器的角系数之间的定量关系；然后，建立红外辐射量的理论修正模型，通过建立的修正模型对目标辐射到探测器的辐射量进行定量补偿；最后，利用红外像探测器对均匀光源辐射量进行采集实验来验证上述方法。从实验结果得出：随着探测器与均匀光源的相对角度的增加，探测器在不同θ角下对均匀光源进行测量的灰度值明显降低。通过对探测器测量值进行补偿后，相对误差小于4%。此方法提高了红外辐射测温的精度。该项研究对红外辐射测温的误差修正具有一定的指导价值。

关键词: 角系数, 比尔定律, 热辐射, 最小二乘法

Abstract: In terms of the famous Beer's principle, a cosine relationship between the distribution of heat radiation of an object to the surrounding space and its radiation direction has been confirmed. Consequently, an obvious difference to the amount of the received infrared radiation is ubiquitous and even results to the error of infrared radiation temperature measurement, owing to the nature of the relative position relationship between the measured target and the detector. To address the issue, the relation of target position to the angle coefficient of detector was firstly characterized quantitatively. A modified model of the amount of infrared radiation was subsequently proposed. Through the modified model, a quantitative compensation scheme for the amount of detector radiation was implemented from target radiation. Moreover, to test the reliability of the method proposed above, an experiment measurement to derive the amount of radiation from uniform light was carried out by using the infrared detector. The results showed that , as the relative angle between the detector and uniform light increases, the gray values from the measurement of detector to uniform light under different ?-angles remarkably decreases. Also, the relative error is lower than 0.04 after the quantitative compensation for the measurement of detector. The present optimized method does not improve the accuracy of infrared radiation temperature measurement, but also enhance the stability of test technology. Such a method can provide a guidance for the error correction of infrared radiation temperature measurement.

Key words: angle coefficient, Beer's principle, heat radiation, the least square method

刘纯红熊丹枫张乐文吴海滨. 辐射换热角系数理论对红外辐射测温的优化[J]. 量子电子学报, 2019, 36(4): 490-494.

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