A system and method for detecting the surface shape of tower-type secondary reflection mirrors based on multi-eye ranging

A secondary mirror, secondary reflection technology, applied in solar heating systems, measuring devices, solar ray concentration, etc., to achieve the effect of wide application, simplified operation steps, and improved accuracy

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A secondary mirror, secondary reflection technology, applied in solar heating systems, measuring devices, solar ray concentration, etc., to achieve the effect of wide application, simplified operation steps, and improved accuracy

CN106441149BActive Publication Date: 2019-04-16SHANGHAI PARASOL RENEWABLE ENERGY CO LTD

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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Such as figure 1 As shown, a tower-type secondary reflection mirror surface type detection system based on multi-eye distance measurement includes at least two image acquisition systems 1 and a computer 4. The image acquisition system 1 is installed on a horizontal rotation angle and pitch rotation angle and can display the angle accurately. On the pan-tilt mechanism 2, the pan-tilt mechanism is fixed on the ground through the support base 3; the image acquisition system is connected with the computer 4 through the data line, and the image data collected is sent to the computer 4 for calculation and processing.

[0039] A method for detecting the surface shape of a tower-type secondary reflection mirror based on multi-eye ranging, comprising the following steps:

[0040] (1), such as figure 2 As shown, first take the project...

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Abstract

The invention relates to a tower-type secondary reflection mirror surface detection system and method based on multi-view distance measurement, and the system comprises at least two image collection systems and a computer. The system comprises the steps: firstly enabling the image centers of the image collection systems to be aligned with a target point, and respectively obtaining the posture information (a pitching angle and a horizontal angle) of each image collection system; secondly carrying out the precise positioning of the target point on the images, and calculating a deflection angle through the deflection between the target point and the image centers in an image coordinate system; thirdly correcting the pitching angles and the horizontal angles; and finally obtaining high-precision three-dimensional coordinate information. Meanwhile, all image collection systems are adjusted independently, and can be flexibly arranged according to the characteristics of a to-be-measured object. Moreover, linear equations with the intersection being the target point are built through the image information of each image collection system, and the distance information of the to-be-measured object is obtained. Therefore, the system and method are easy to achieve the high-precision three-dimensional surface detection at different distances.

Description

technical field [0001] The invention relates to a system and method for detecting the surface shape of a tower-type secondary reflection mirror based on multi-eye ranging, and belongs to the technical field of surface shape detection of reflecting mirrors. Background technique [0002] As a new type of tower-type solar thermal power generation technology, it is installed on the tower-type secondary reflection mirror to reflect the sunlight reflected by the heliostat in all directions to the surface of the heat absorber to obtain higher energy density solar energy for power generation , so the surface accuracy of the tower secondary reflector is a key factor affecting the power generation efficiency. In the actual installation process, if the surface accuracy of the secondary reflector does not meet the requirements, the secondary reflected sunlight may not be accurately irradiated into the heat sink, thereby reducing the power generation efficiency and even affecting the nor...

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Application Information

Patent Timeline

16 Apr 2019

Publication

CN106441149B

IPC: G01B11/24

CPC: G01B11/24; F24S23/70; F24S80/00; Y02E10/40

Inventors: 游思梁; 孙楠