Calibration and measurement performance analysis for a spectral band charge-coupled-device-based pyrometer

Yuzhong Zhang; Wuqiong Zhang; Zhe Dong; Shuangbao Shu; Jingtao Dong; Chenyao Xing

doi:10.1063/1.5129758

Calibration and measurement performance analysis for a spectral band charge-coupled-device-based pyrometer

Rev Sci Instrum. 2020 Jun 1;91(6):064904. doi: 10.1063/1.5129758.

Authors

Yuzhong Zhang¹, Wuqiong Zhang¹, Zhe Dong¹, Shuangbao Shu¹, Jingtao Dong¹, Chenyao Xing¹

Affiliation

¹ School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, Anhui, China.

PMID: 32611010
DOI: 10.1063/1.5129758

Abstract

Commercial charge-coupled device (CCD) cameras are used widely in industrial applications. This paper uses a commercial CCD camera to develop a spectral band CCD-based pyrometer. To improve the calibration accuracy, a thermometry model based on the extended effective wavelength is introduced to describe the pyrometer. The Tikhonov regularization method is employed to acquire the stabilized solutions for the model parameters considering their sensitivities to the perturbations in the calibration data. Therefore, the relationships between the temperature measurement performances and the system parameters, namely, the electron gain and F-number, are analyzed in terms of the temperature measurement range and sensitivity. Meanwhile, the error and uniformity of the temperature measurements are also investigated using a blackbody furnace. The experimental results show that the temperature measurement range for the designed pyrometer is 800-1203 °C, in which the sensitivity is 0.4906-35.64 °C^-1 and the average relative error and non-uniformity of the temperature measurements are 2.5‰ and 1.36%, respectively.