Research of Multi Points and Multi Spectral Calibration in Two-Dimensional Temperature Field Reconstruction Based on CCD
ZHANG Fu-cai1, 2, SUN Xiao-gang1*, XING Jian3
1. Harbin Institute of Technology, Harbin 150001, China
2. Heilongjiang University of Science and Technology, Harbin 150022, China
3. Northeast Forestry University, Harbin 150040, China
Abstract：Based on the multi-spectral technology and the characteristics of CCD two-dimensional temperature field measurement, this paper proposes a colorful CCD two-dimensional temperature field multi-spectral true temperature online multi-point calibration system. With the analysis of multi-spectral measurement model and CCD measurement model, the approximate relation between the true temperature and the brightness of CCD is deduced during the gas combustion. With multi-spectral multi-points temperature measurement technology, the true temperature to calculate the emissivity and the true temperature of multi-points and use values of the true temperature, the corresponding points of CCD array can be calibrated. Applying the two-dimensional temperature field true temperature calibration system in CO2 laser welding flame, we not only get the variation between the emissivity and the wavelength but also two-dimensional true temperature distribution maps of flame of CO2 laser welding. Multi-spectral calibration technology has the feature of real time and flexible and is a really feasible temperature CCD online multi-points calibration and measurement method.
Key words：Multi-spectral; CCD; Temperature field; True temperature; Emissivity
张福才，孙晓刚，邢 键. 多光谱多点标定的CCD二维温度场重建方法的研究[J]. 光谱学与光谱分析, 2017, 37(07): 2283-2287.
ZHANG Fu-cai, SUN Xiao-gang, XING Jian. Research of Multi Points and Multi Spectral Calibration in Two-Dimensional Temperature Field Reconstruction Based on CCD. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(07): 2283-2287.
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