The Principle of Temperature Measurement of a Non-Diffuse Emitter
XIN Cheng-yun1, SONG Zheng-chang1, DAI Jing-min2, ZHANG Yu2, LI Yi-min1*, DU Xiang-han3
1. School of Electric Power Engineering, China University of Mining and Technology, Xuzhou 221116, China 2. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China 3. AVIC Hefei Jianghang Aircraft Equipment Co., Ltd., Hefei 230026, China
Abstract：In order to measure the temperature of the object in the case of non-diffuse emission within a finite solid angle, a new concept for radiation thermometry, the apparent emissivity, has been presented firstly after a proper mathematical transformation of the radiation measurement equation and its characteristics have also been investigated. The results indicated that although the apparent emissivity is complex in form, it is only the function of the wavelength for one measurement even if the object is non-diffuse. So the temperature of the object in the case of non-diffuse emission within a finite solid angle can be solved by modeling the apparent emissivity. Then the equations for monochromatic and wavelength radiation measurement were deduced. At the same time, the measurement of temperature for a finite area was investigated, and it can be found that if the temperatures of the finite area are the same, they can also be determined by modeling the apparent emissivity.
辛成运1，宋正昶1，戴景民2，张 昱2，李意民1*，杜香寒3 . 非漫发射体温度测量原理 [J]. 光谱学与光谱分析, 2014, 34(12): 3188-3191.
XIN Cheng-yun1, SONG Zheng-chang1, DAI Jing-min2, ZHANG Yu2, LI Yi-min1*, DU Xiang-han3 . The Principle of Temperature Measurement of a Non-Diffuse Emitter . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(12): 3188-3191.
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