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Dish Stirling solar energy light-concentrating mirror surface quality detection method

A quality inspection method and solar concentrating technology, applied in the field of dish solar energy, can solve the problem of inability to take into account efficiency and accuracy, and achieve the effects of improving efficiency, simple equipment and high accuracy

Active Publication Date: 2017-07-04
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0005] In order to overcome the lack of both efficiency and precision of the existing mirror surface quality inspection, the present invention provides a dish-type Stirling solar concentrating mirror surface quality inspection method with high detection efficiency and high detection accuracy

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  • Dish Stirling solar energy light-concentrating mirror surface quality detection method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] refer to figure 1 , a dish type Stirling solar concentrating mirror surface quality detection method, comprises the following steps:

[0035] 1) Install the device. The measuring equipment of the present invention is an industrial camera and an LCD display. Fix the two devices together and place them at a distance of about 2 times the focal length from the mirror. Adjust the camera angle so that the specular area it sees is all on the LCD screen.

[0036] 2) Camera internal parameter calibration. Use the checkerboard calibration board to calibrate the internal parameters of the camera, including the calibration of focal length, image center, and lens distortion.

[0037] 3) Calibrate the positional relationship between the camera and the LCD display. Place the rectangular flat mirror in front of the camera and the screen, display a standard checkerboard on...

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Abstract

The invention discloses a dish Stirling solar energy light-concentrating mirror surface quality detection method. The method includes the following steps: 1. Installing a device; 2. calibrating internal parameters of a camera; 3. calibrating the position relation of the camera and a LCD display; 4. initially establishing the position relationship between the camera and a mirror surface; 5. on the basis of a mirror surface initial model, estimating the distribution of normal factors on the surface of the mirror surface; 6. on the basis of the normal factor, knitting a new mirror model; 7. re-computing the distribution of the normal factors on the surface of the mirror surface, again knitting a mirror surface model; 9. comparing the parameters of the two adjacent knitted models until the models are converged; 10. on the basis of the converged mirror surface model, computing the normal vector at a mirror surface reference point of the mirror surface model; 11. superpose the normal vector which is knitted at the reference point and an engineered normal factor which are different by rotating around the reference point by a mirror surface coordinate system; and 12. computing the standard differences between the normal vector on the surface of the mirror surface and an ideal difference so as to represent the smoothness of the mirror surface. According to the invention, the method has high detection efficiency and high detection precision.

Description

technical field [0001] The invention belongs to the field of dish-type solar energy in solar energy technology, and relates to a technology of a sunlight collector in concentrating thermal power generation, in particular to a method for detecting the quality of a dish-type Stirling solar concentrating mirror. Background technique [0002] At present, the rapid consumption of fossil energy and the serious pollution of the environment have become the focus of the world's common attention, and the development of new energy has become the core of research in various countries. Among them, solar energy has attracted more and more attention and research because of its sustainability and cleanliness. The main way to utilize solar energy is to convert light energy into electrical energy. Existing technologies mainly include photovoltaic power generation and concentrating thermal power generation. Among them, the dish Stirling technology in concentrating thermal power generation has ...

Claims

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Application Information

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IPC IPC(8): G01B11/30
CPCG01B11/30
Inventor 李松许金山陈胜勇帅永辉
Owner ZHEJIANG UNIV OF TECH
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