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Heliostat correction method based on mirror mark

A calibration method and heliostat technology, applied in the field of heliostat detection, can solve the problems of small number of targets, low calibration efficiency, unusability, etc., and achieve high calibration efficiency, wide recognition range, and strong adaptability

Inactive Publication Date: 2019-09-06
ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Conventional heliostat correction technology mainly has two methods: one is to form a sun spot by reflecting sunlight to the target, and then correct the heliostat by calculating the center position of the spot. less, the correction efficiency is low, and it cannot be used on cloudy days; at the same time, when the heliostat is far away, it is difficult to reflect the sun spot to the target
The other is to use the camera to face the heliostat directly, and take pictures of the sun spot position reflected by the sun in the heliostat. This method needs to turn the heliostat to a specific angle for detection, which has strict requirements, and the correction efficiency is also low, and it cannot be detected on cloudy days use

Method used

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  • Heliostat correction method based on mirror mark
  • Heliostat correction method based on mirror mark
  • Heliostat correction method based on mirror mark

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Please refer to figure 1 with figure 2 , A method for heliostat correction based on mirror mark, including the following steps:

[0043] S1. Set marking points at the four corners of the mirror surface of the heliostat 4.

[0044] The mark points are marked with a back shape, and the mirror field 3 is partitioned, and a pan-tilt camera 1 that collects the marked point images is set up on the heat absorption tower, so that the pan-tilt camera 1 can obtain all the partitions facing the pan-tilt camera 1 after rotating Heliostat 4, and survey and map the coordinate value, initial horizontal angle and initial azimuth angle of PTZ camera 1 in the lens field coordinate system.

[0045] As an embodiment, the circular mirror field 3 is divided into four regions: southeast, northeast, southwest, and northwest. Four pan / tilt cameras 1 are installed on the heat absorption tower. Each pan / tilt camera 1 rotates its horizontal angle and The azimuth angle can completely cover the heliosta...

Embodiment 2

[0065] Please refer to image 3 with Figure 4 , A method for heliostat correction based on mirror mark, including the following steps:

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Abstract

The invention discloses a heliostat correction method based on a mirror mark. By setting a mark point on the heliostat to be measured, a back type mark is used together with a pan-tilt camera or a magnetic space positioning sensor mark is used together with a spatial positioning sensor measuring station and a spatial positioning system to measure the coordinate values of the marked points at the four corners of the heliostat to be measured, and the values are compared with the coordinate values calculated by the theoretical parameters to obtain the correction values of the horizontal angle andthe azimuth angle. The method provided by the invention can realize the correction of installation errors of the heliostat during the installation of the mirror field, and ensure that the heliostat can accurately align the positive heat sink device.

Description

Technical field [0001] The invention relates to the field of heliostat detection, in particular to a heliostat correction method based on mirror surface marks. Background technique [0002] In the energy field, solar energy is more and more used as a clean and renewable energy source. In the field of solar power generation, solar power generation methods include photovoltaic power generation and solar thermal power generation. With the development of science and technology, especially the rise of computer control technology, solar thermal power generation technology has become an emerging solar energy utilization technology after photovoltaic power generation technology. Tower-type solar thermal power generation uses a large number of reflectors to focus the energy of direct sunlight to heat the working fluid to generate high-temperature and high-pressure steam, which drives a steam turbine to generate electricity. [0003] Tower-type solar thermal power generation uses a large nu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/10
CPCG05D3/105
Inventor 白帆郑德雁倪杭飞王慧琛张国兴施斌
Owner ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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