注意：铸坯的渐晕校准和温度校正。

Note: Vignetting calibration and temperature correction for casting billets.

作者信息

Xie Zhi, Zhang Yuzhong, Hu Zhenwei, Bai Haicheng

机构信息

State Key Laboratory of Synthetical Automation for Process Industries, Northeastern University, Shenyang 110819, China.

出版信息

Rev Sci Instrum. 2013 Sep;84(9):096106. doi: 10.1063/1.4821499.

DOI:10.1063/1.4821499

PMID:24089881

Abstract

A method for calibration of vignetting coefficient is proposed in this paper to solve the distortion of temperature measurement using a CCD-based pyrometer. On this basis, a hybrid temperature measurement system, which comprises of an array CCD camera with high resolution and a single spot colorimetric thermometer, is introduced to eliminate the influences of surface striped iron oxide scale, dust, and emissivity on temperature measurement for casting billets. Currently, the system has been successfully applied and verified in some continuous casting production lines. The vignetting estimation error of 0.052 and the maximum temperature measurement fluctuation of 5 °C were achieved in these measurements.

摘要

本文提出一种用于校准渐晕系数的方法，以解决基于电荷耦合器件（CCD）的高温计温度测量失真问题。在此基础上，引入了一种混合温度测量系统，该系统由高分辨率阵列CCD相机和单光斑比色温度计组成，以消除表面条纹状氧化铁鳞片、灰尘和发射率对铸坯温度测量的影响。目前，该系统已在一些连铸生产线上成功应用并得到验证。在这些测量中，渐晕估计误差为0.052，最高温度测量波动为5℃。