Xin Cheng-Yun, Cheng Xiao-Fang, Zhang Zhong-Zheng
Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei 230027, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2012 Oct;32(10):2735-8.
Abstract True surface temperatures can be determined by measurements of radiation emitted by the object. The non-spectral parameter in the radiation measurement equation is the function of the relative position between the target and the lens, so calibration of space position is necessary for temperature measurement, when emissivity and temperature are measured simultaneously. In the present paper, the non-spectral parameter was included into the undetermined coefficients of emissivity modeled by finite series, which will not affect the solution of true surface temperature. Therefore, radiation thermometry can be accomplished without calibration of space position and normalization of measurement data. And not the true spectral emissivity but the trend of it can be measured. Two special examples were investigated, respectively. The results indicate that when the effective wavelength of each channel is different, multi-wavelength radiation thermometry equations have the unique solution, while the number of the multiband ones may be zero, one, two or even three.
摘要 真实表面温度可通过测量物体发射的辐射来确定。辐射测量方程中的非光谱参数是目标与透镜相对位置的函数，因此在同时测量发射率和温度时，进行空间位置校准对于温度测量是必要的。在本文中，非光谱参数被纳入有限级数建模的发射率待定系数中，这不会影响真实表面温度的求解。因此，辐射测温无需进行空间位置校准和测量数据归一化即可完成。并且可以测量的不是真实光谱发射率，而是其变化趋势。分别研究了两个特殊示例。结果表明，当每个通道的有效波长不同时，多波长辐射测温方程有唯一解，而多波段辐射测温方程的解的个数可能为零、一、二甚至三个。
