Research on some influence factors in high temperature measurement of metal with thermal infrared imager
Research on some influence factors in high temperature measurement of metal with thermal infrared imager
复制标题
热红外成像仪金属高温测量的若干影响因素研究
DOI：
10.1016/j.phpro.2011.06.150
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Ke Zhiyong
中科院分区：
文献类型：
--
作者：
Quan Yanming;Xu Hao;Ke Zhiyong
近年来，红外热成像技术被引入到金属加工温度的研究领域，如金属加工中工件和工具的温度。然而，这些金属部件通常是非黑体，其表面发射率未知且变化不定，加上在线加工环境也影响红外成像仪的测量。因此，用红外热像仪精确测量金属加工温度成为一个挑战。本文首先分析了红外热像仪的测温公式，然后介绍了作者设计的实验装置，并利用红外热像仪实验研究了高发射率的低温和高温背景、物面视场比、拍摄角度等因素对红外热像仪测温的影响。结果表明，采用高发射率的低温背景、较小的物面/视场比以及垂直于被测表面的拍摄方向可以提高测量精度。该工作为金属加工过程中的温度测量提供了有益的参考。
Thermal infrared imagers have been introduced into the research field of metal processing temperature in recent years, such as the workpiece's and the tool's temperatures in metal machining. However, these metal components are usually non-black body with unknown and varied surface emissivities, plus the in-line processing environment also effects the measurement of infrared imager. Hereby, accurately measuring metal processing temperature with infrared imager becomes a challenge. In this paper, the temperature measurement formula of infrared imager is analyzed first, and next the experimental devices designed by the authors is introduced, then several influences on the temperature measurement, such as low temperature and high temperature backgrounds with high emissivity, object area / viewing field ratio, and the shooting angel, are experimentally investigated with a thermal infrared imager. The results indicate that a low temperature background with high emissivity and a small object area / viewing field ratio, as well as a shooting direction perpendicular to the measured surface, can improve the measurement accuracy. This work provides a useful reference for the temperature measurement in metal processing.
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DOI：
10.1016/s0890-6955(00)00113-9
发表时间：
2001-05
影响因子：
14
作者：
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2008-03-03
影响因子：
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