Measurement of flame temperature distribution using optical tomographic and two-color pyrometric techniques
Measurement of flame temperature distribution using optical tomographic and two-color pyrometric techniques
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DOI：
10.1109/i2mtc.2012.6229354
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发表时间：
2012-05
期刊：
影响因子：
--
通讯作者：
M. Hossain;G. Lu;Yong Yan
中科院分区：
文献类型：
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作者：
M. Hossain;G. Lu;Yong Yan
本文提出了结合光学层析技术和双色参数技术对燃烧器火焰温度分布进行三维重建的方法。火焰图像是使用八个光纤束和两个RGB CCD（电荷耦合器件）相机从燃烧器一侧的八个不同方向获得的。提出了一种结合LFBP（逻辑滤波反投影）和SART（同步代数重建技术）的层析成像新算法，用于两种原色（红、绿）图像的三维灰度重建。然后，根据双色原理，从重建的两个原色图像的灰度级的比例确定火焰的温度分布。最后给出了燃气燃烧试验台的实验结果，并进行了讨论。结果表明，该方法可以有效地测量火焰的三维温度分布。
This paper presents the technique which combines optical tomographic and two-color parametric techniques for the three-dimensional (3-D) reconstruction of temperature distribution of a burner flame. Flame images are acquired using eight optical fiber bundles and two RGB CCD (charge-coupled device) cameras from eight different directions on one side of the burner. The new tomographic algorithm which combines the LFBP (Logical Filtered Back-Projection) and SART (Simultaneous Algebraic Reconstruction Technique) is proposed for the 3-D reconstruction of the gray-levels for two primary color (Red and Green) images. The temperature distribution of the flame is then determined from the ratios of the reconstructed gray-levels of the two primary color images based on the two-color principle. Experimental results on a gas fired combustion test rig are also presented and discussed. The results demonstrate that the proposed technique is effective in measuring the 3-D temperature distribution of the flame.