Thermochemical luminescence tomography-based combustion flame three-dimensional contour fast reconstruction method
A technology of three-dimensional profile and combustion flame, which is applied in the direction of sensing radiation from gas/flame, scientific instruments, optical radiation measurement, etc., can solve the problems that the detection of combustion characteristics in three-dimensional space cannot be realized, and achieve efficient and clean combustion and improved combustion The effect of technology and broad application prospects
Inactive Publication Date: 2019-07-05
SHANDONG UNIV OF TECH
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Non-intrusive detection technology does not require external energy beams to intervene in the combustion field. The system is relatively simple, but the detection result is the two-dimensional distribution of the combustion field, or the accumulation in the one-dimensional direction of space, which still cannot realize the detection of combustion characteristics in three-dimensional space.
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[0014] Taking the visual detection of a certain laminar flame as an example, the specific implementation process of a fast three-dimensional contour reconstruction method of a combustion flame based on thermochemiluminescence tomography technology disclosed in the present invention will be further explained in conjunction with the accompanying drawings:
[0015] Step 1. Build a multi-angle image acquisition system such as figure 1 As shown, the system uniformly sets 6 imaging optical paths in the range of 0-180°, and each imaging optical path is mainly composed of industrial CCD and lens; the imaging angles of each optical path are 0°, 30°, 60°, 90°, 120°, 150°, the angle between the main optical axes of two adjacent imaging optical paths is 30°; the main optical axes of each imaging optical path are on the same plane and intersect at the center point O. Uniformly set the CCD working mode as the external trigger mode, use the synchronization box as the external trigger source ...
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The invention relates to a thermochemical luminescence tomography-based combustion flame three-dimensional contour fast reconstruction method. The method is sued for performing three-dimensional visual inspection on combustion flame morphological contour features. According to the method, based on the principle of the thermochemical luminescence tomography, a CCD is used to synchronously collect combustion flame chemiluminescence images from a plurality of angles; a binarized array is constructed through multi-angle combustion flame radiation images; a flame binarized tomographic image is reconstructed on the basis of the array, and a sectional contour is identified; and the reconstruction of a combustion flame three-dimensional spatial contour is realized based on the reconstruction of the flame tomographic sectional contour. With the method adopted, the problem of insufficient spatial resolution of an existing visual combustion detection method can be solved; visual detection in two-dimensional space is extended to three-dimensional space; a detection process does not require the involvement of an external strong light source, sound waves, and the like, and therefore, the detection process has little possibility of being interfered by other factors; and reconstruction steps do not involve large-scale iterative operation, and therefore, the computation quantity of the method is much less than that of conventional computer tomography, and requirements for computer hardware resources are not high.
Description
technical field [0001] The invention relates to a method for visual detection of combustion flames, in particular to a rapid three-dimensional contour reconstruction method of combustion flames based on thermal chemiluminescence tomography technology. Background technique [0002] Combustion process visualization detection technology is widely used in the application research of energy industry, and simple photography or video monitoring can no longer meet the needs of scientific research and production. At present, visual combustion detection technology is widely used to study the combustion characteristics of fuel under complex working conditions, to reveal fuel combustion law, pollutant formation characteristics, heat release law, etc. The development of visual detection technology will promote the development of basic combustion theory and fuel application technology. breakthrough is of great significance. The current visual combustion detection technology can be divide...
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Login to View More IPC IPC(8): G01J5/00G01J5/10G01J5/20
CPCG01J5/00G01J5/0018G01J5/10G01J5/20G01J2005/0077G01J2005/106G01J2005/202
Inventor 成艳亭王建军孙砚飞乔建委许文硕王志勇
Owner SHANDONG UNIV OF TECH