Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement

doi:10.1088/1674-1056/28/3/034207

中国物理B ›› 2019, Vol. 28 ›› Issue (3): 34207-034207.doi: 10.1088/1674-1056/28/3/034207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement

Yudong Liu(刘煜东), Md. Moinul Hossain, Jun Sun(孙俊), Biao Zhang(张彪), Chuanlong Xu(许传龙)

1 Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;
2 School of Engineering and Digital Arts, University of Kent, Canterbury, Kent, CT2 7NT, UK;
3 Sunny Central Research Institute, Hangzhou 310052, China

收稿日期:2018-09-16 修回日期:2018-12-31 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: Chuanlong Xu E-mail:chuanlongxu@seu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51676044 and 51327803), the Social Development Project of Jiangsu Province, China (Grant No. BE20187053), the Postgraduate Research and Practice Innovation Program of Jiangsu Province, China (Grant No. KYCX170081), and China Scholarship Council.

Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement

Yudong Liu(刘煜东)¹, Md. Moinul Hossain², Jun Sun(孙俊)³, Biao Zhang(张彪)¹, Chuanlong Xu(许传龙)¹

1 Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;
2 School of Engineering and Digital Arts, University of Kent, Canterbury, Kent, CT2 7NT, UK;
3 Sunny Central Research Institute, Hangzhou 310052, China

Received:2018-09-16 Revised:2018-12-31 Online:2019-03-05 Published:2019-03-05
Contact: Chuanlong Xu E-mail:chuanlongxu@seu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 51676044 and 51327803), the Social Development Project of Jiangsu Province, China (Grant No. BE20187053), the Postgraduate Research and Practice Innovation Program of Jiangsu Province, China (Grant No. KYCX170081), and China Scholarship Council.

摘要/Abstract

摘要：

It is essential to investigate the light field camera parameters for the accurate flame temperature measurement because the sampling characteristics of the flame radiation can be varied with them. In this study, novel indices of the light field camera were proposed to investigate the directional and spatial sampling characteristics of the flame radiation. Effects of light field camera parameters such as focal length and magnification of the main lens, focal length and magnification of the microlens were investigated. It was observed that the sampling characteristics of the flame are varied with the different parameters of the light field camera. The optimized parameters of the light field camera were then proposed for the flame radiation sampling. The larger sampling angle (23 times larger) is achieved by the optimized parameters compared to the commercial light field camera parameters. A non-negative least square (NNLS) algorithm was used to reconstruct the flame temperature. The reconstruction accuracy was also evaluated by the optimized parameters. The results suggested that the optimized parameters can provide higher reconstruction accuracy for axisymmetric and non-symmetric flame conditions in comparison to the commercial light field camera.

关键词: light field camera flame radiation sampling, parameter optimization, temperature reconstruction

Abstract:

Key words: light field camera flame radiation sampling, parameter optimization, temperature reconstruction

中图分类号: (Geometrical optics)

42.15.-i

44.40.+a (Thermal radiation) 42.30.Wb (Image reconstruction; tomography) 07.60.Dq (Photometers, radiometers, and colorimeters)

刘煜东, Md. Moinul Hossain, 孙俊, 张彪, 许传龙. Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement[J]. 中国物理B, 2019, 28(3): 34207-034207.

Yudong Liu(刘煜东), Md. Moinul Hossain, Jun Sun(孙俊), Biao Zhang(张彪), Chuanlong Xu(许传龙). Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement[J]. Chin. Phys. B, 2019, 28(3): 34207-034207.

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Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement

Investigation and optimization of sampling characteristics of light field camera for flame temperature measurement

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