利用窄谱照明透过火焰进行成像。
Imaging Through Fire Using Narrow-Spectrum Illumination.
作者信息
Smith Christopher M, Hoehle Matthew S
机构信息
Berkshire Hathaway Specialty Insurance, 100 Federal Street, 20 Floor, Boston, MA, 02110, USA.
National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899, USA.
出版信息
Fire Technol. 2018;54. doi: 10.1007/s10694-018-0756-5.
This paper demonstrates a simple method to enhance visibility through clean-burning flames that allows new opportunities to perform qualitative and quantitative optical metrology in fire research. The method combines narrow-spectrum, blue illumination and matched optical filters to reduce the influence of optical emissions from a glowing hot target and a large natural gas diffusion flame. The paper describes how the required illumination strength and filtering can be estimated from basic combustion and optical principles. Compared to white light, the required illumination to detect objects 26 engulfed in flames with this method is reduced by a factor of 10. A series of experiments are conducted to determine the effectiveness of this method, successfully demonstrating the ability to take images of objects in natural gas fires up to 1000 kW using 200 W of illumination power.
本文展示了一种通过清洁燃烧火焰提高可见度的简单方法，这为火灾研究中的定性和定量光学计量带来了新机遇。该方法将窄光谱蓝色照明与匹配的光学滤光片相结合，以减少炽热发光目标和大型天然气扩散火焰产生的光发射的影响。本文描述了如何根据基本燃烧和光学原理估算所需的照明强度和滤光情况。与白光相比，使用此方法检测火焰中被吞没物体所需的照明减少了10倍。进行了一系列实验以确定该方法的有效性，成功证明了使用200瓦照明功率能够拍摄高达1000千瓦天然气火灾中物体的图像。
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