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Real-time monitoring method for three-dimensional structure of disk type mirror surface

A three-dimensional structure and real-time monitoring technology, applied in image data processing, 3D modeling, instruments, etc., can solve the problems of inconvenient installation and slow speed of measurement hardware, and achieve manpower and time saving, good continuity, and fast and effective process Effect

Active Publication Date: 2019-02-19
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the shortcomings of the existing technology in the process of obtaining the mirror structure, the speed is slow or the installation of the measurement hardware is not convenient, and at the same time, the measurement process is also effective during the operation of the photothermal system

Method used

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  • Real-time monitoring method for three-dimensional structure of disk type mirror surface
  • Real-time monitoring method for three-dimensional structure of disk type mirror surface
  • Real-time monitoring method for three-dimensional structure of disk type mirror surface

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Embodiment Construction

[0050] Below in conjunction with accompanying drawing, the present invention will be further described

[0051] The processing object of this embodiment is as figure 1 as shown, figure 1 It is a schematic diagram of a typical butterfly mirror.

[0052] Step 1, camera array construction. Such as Figure 3-8As shown, in this embodiment, 4 industrial cameras are used to construct a camera array. The camera is connected with the main support by a fixed bracket. The main bracket consists of two longitudinal brackets 2 and two beams 3 to form a 'well'-shaped structure. The bottoms of the two longitudinal brackets 2 are respectively connected to the bottom bracket 1, and the joints of the longitudinal brackets 2 and the beams 3 also use fastening devices 4 Triangular support is carried out; the camera tray and the support structure 5 are divided into two ends located at the two ends of the beam 3, the camera is arranged on the camera tray, and the longitudinal bracket 2 and the ...

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Abstract

The invention discloses a real-time monitoring method for a three-dimensional structure of a disk type mirror surface. The method is used for solving the defect that the existing technology is slow orinconvenient to install a measurement hardware in the process of obtaining the mirror surface structure, and meanwhile the measurement process is also effective in the operation process of the photothermal system. The method comprises the steps of camera array construction, camera calibration, camera array placement, shooting and picture transmission, picture preprocessing, feature point selection and matching, reference point selection, camera relative position solving, three-dimensional position reconstruction, three-dimensional point correction, orientation analysis, and light spot analysis. The whole process is quick and effective, and the method is high in precision. The hardware facility is convenient to install, the robustness of the installation and use process is strong, a certain offset is allowed, and this offset does not affect the reconstruction result.

Description

technical field [0001] This application relates to the field of photogrammetry, and is a method for real-time monitoring of the three-dimensional structure of a dish mirror, specifically a digital industrial photogrammetry method based on multi-view reconstruction technology and applied to the measurement of the structure of a dish-type concentrating mirror in the field of solar power generation. Background technique [0002] The sub-components of the solar thermal power generation system include: concentrating mirrors, photothermal conversion devices, heat exchange devices, and corresponding engines for power generation. The advantage of photothermal power generation is that it can utilize the full-band sunlight. Due to the low energy flux density of sunlight, the concentrating mirror is used as a device for concentrating sunlight in the system, and its performance plays an important role in the efficiency of the entire system. [0003] Concentrating mirrors are mainly div...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C11/02G06T17/00
CPCG01C11/02G06T17/00
Inventor 倪东易振彧
Owner ZHEJIANG UNIV
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