A dish stirling solar concentrating quality detection method
A quality inspection method and solar concentrating technology, which is applied in the direction of testing optical performance, geometric characteristics/aberration measurement, etc., can solve problems such as the inability to effectively detect the quality of dish-type Stirling solar concentrating, and achieve high reliability and ensure accuracy High safety and high effect
Active Publication Date: 2019-05-31
ZHEJIANG UNIV OF TECH
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[0004] In order to overcome the deficiency that the existing technology cannot effectively detect the quality of dish-type Stirling solar concentration, the present invention provides a dish-type Stirling solar concentration that can effectively detect the quality of dish-type Stirling solar concentration, with high safety and high reliability. Quality testing method
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[0031] The present invention will be further described below in conjunction with the accompanying drawings.
[0032] refer to figure 1 , a dish type Stirling solar concentration quality detection method, comprises the following steps:
[0033] 1) Calibrate the camera pixel response by piecewise fitting
[0034] There is a nonlinear relationship between the pixel response of the camera and the illuminance of the surface of the object being photographed. Therefore, if you want to estimate the illuminance of the object surface from the brightness of the image, you need to calibrate the response of the camera in advance; use the method of segmented fitting to achieve this calibration. The equipment to be calibrated is an LCD display screen and a camera whose brightness can be controlled by a computer. This calibration has certain requirements on the quality of the LCD screen, that is, there is a linear relationship between the brightness displayed on the screen and the amount co...
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The invention provides a disc-type Stirling solar condensation quality detection method. The method comprises the steps that 1) a segmentation fitting method is used to calibrate camera pixel response; 2) a light spot image generated by the disk surface convergence light is photographed; 3) the image is calibrated according to a fitted camera response curve; 4) the light spot illumination distribution is estimated; 5) the light spot energy density distribution is estimated; and 6) the light spot quality is judged according to the condensation efficiency and the shape, the size and the distribution uniformity of light spots. According to the step 6), in the heating head area, the difference between the corresponding radiant power at each pixel position and the average power in the area cannot be too large, and if the difference is greater than a set threshold, the energy distribution is considered to be uneven. The disc-type Stirling solar condensation quality detection method provided by the invention can effectively detects the disc-type Stirling solar condensation quality, and has the advantages of high safety and high reliability.
Description
technical field [0001] The invention belongs to the field of concentrating thermal power generation in solar energy, and relates to the concentrator technology in the dish Stirling thermal power generation technology, in particular to a method for detecting the quality of the dish Stirling solar concentration. Background technique [0002] Due to the continuous consumption of traditional energy sources and serious air pollution, solar energy has received more and more attention due to its cleanliness and infinity. Among various solar energy utilization technologies, dish Stirling technology has the highest photoelectric conversion efficiency. This technology uses a giant parabolic dish to gather sunlight parallel to its optical axis near the focal point to form a high-energy-density spot, that is, a radiation source. This radiation source is used as the power source of the Stirling engine to drive it to run, and the engine drives the generator connected to it to run. , and ...
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IPC IPC(8): G01M11/02
CPCG01M11/02G01M11/0242
Inventor 许金山李松陈胜勇帅永辉
Owner ZHEJIANG UNIV OF TECH