Three-dimensional fluid concentration field calibration device and calibration method
A calibration method and calibration device technology, which is applied in measurement devices, material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems that PLIF calibration method cannot realize 3DLIF calibration, etc., and achieve the effect of improving measurement accuracy
Active Publication Date: 2021-07-27
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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[0004] Based on this, it is necessary to provide a three-dimensional fluid concentration field calibration device and calibration method for the problem that the PLIF calibration method cannot achieve calibration in the 3DLIF measurement process
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[0067] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.
[0068] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" an...
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Abstract
The application relates to a three-dimensional fluid concentration field calibration device and a calibration method. The three-dimensional fluid concentration field calibration device can divide the accommodating cavity formed by the calibration box into a first-layer cavity and a second-layer cavity by arranging two first partitions and at least two second partitions in the calibration box. body and the third-layer cavity, while dividing the second-layer cavity into at least three sub-cavities. In the actual measurement process, the liquid outside the calibration device enters the first-layer cavity, the second-layer cavity, the third-layer cavity and the sub-cavity through the liquid inlet hole, and the first-layer cavity, the second-layer cavity, The third-layer cavity and sub-cavity are used to configure the fluorescent substance solution with a preset concentration. The plane laser scans along the distribution direction of the first-layer cavity, the second-layer cavity and the third-layer cavity of the calibration device to obtain Multi-frame fluorescence scanning images at different positions of the calibration device, according to the scanning images, the calibration coefficient of the three-dimensional fluid concentration field can be obtained, the calibration process is completed, and the measurement accuracy of the 3DLIF equipment is improved.
Description
technical field [0001] The present application relates to the technical field of flow measurement, in particular to a three-dimensional fluid concentration field calibration device and calibration method. Background technique [0002] In three-dimensional laser-induced fluorescence (3D Laser Induced Fluorescence, 3DLIF) measurement, on-site calibration and correction are usually required to accurately invert the gray distribution of the image into a real three-dimensional concentration field. [0003] In the traditional Planar Laser Induced Fluorescence (PLIF) calibration method, a uniform concentration field with different concentrations is usually constructed for measurement, and the gray level of the image is extracted and its correlation with the concentration is constructed, so as to realize the calibration of the light source along the process. Attenuation correction. However, the PLIF calibration method cannot realize the calibration during the 3DLIF measurement proc...
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IPC IPC(8): G01N21/64
CPCG01N21/6402
Inventor 王鲁海黄真理任家盈
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES