Sun tracking correction method and sun tracking correction device based on motion law of sun and image acquisition

A technology of image acquisition and movement rules, which is applied in the field of sun tracking correction, can solve the problems of low correction accuracy of solar power generation devices and low sun tracking accuracy, and achieve real-time efficient tracking, high precision, and improved utilization.

Inactive Publication Date: 2017-05-31
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0006] However, in the existing sun tracking devices, due to factors such as mechanical errors, the track

Method used

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  • Sun tracking correction method and sun tracking correction device based on motion law of sun and image acquisition
  • Sun tracking correction method and sun tracking correction device based on motion law of sun and image acquisition
  • Sun tracking correction method and sun tracking correction device based on motion law of sun and image acquisition

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Embodiment Construction

[0041] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Such as figure 1 As shown, a sun tracking correction method based on the law of solar motion and real-time camera acquisition includes the following steps:

[0043] (1) Obtain the longitude λ and latitude of the local geographic location information;

[0044] (2) Calculate the declination angle δ of the place at the current moment and the solar angle β of the sun at the current moment:

[0045]

[0046]

[0047] Among them, n is the accumulated number of days in a year corresponding to the detection day. For example, taking the Gregorian calendar as an example, January 1st is the number of days n=1; January 2nd is the number of days n=2,..., December 31st is the number of days n=365;

[0048] (3) Use the sun angle β to calculate the time...

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Abstract

The invention discloses a sun tracking correction method and a sun tracking correction device based on the motion law of the sun and image acquisition. The method comprises the following steps: the declination angle Delta, the day angle Beta and the hour angle Omega of the sun in the local area are calculated according to the local time and the motion law of the sun; the altitude angle Alpha and the azimuth angle Gamma of the sun are calculated according to the latitude information, the declination angle Delta and the hour angle Omega, and the location of the sun is judged; a holder rotates to a specific position under control; a camera collects an image of the sun and processes the image, and calculates the deviation Sigma; and the camera feeds the deviation Sigma back to the holder, the holder rotates to correct the image so as to finely adjust the location of the sun, and thus, the sun's trajectory can be tracked in real time. A sun shading board is designed, which can shade a sun area to protect the camera while collecting a panoramic image of the sky. According to the invention, the sun image is corrected by calculating the deviation Sigma. The error influence brought by a mechanical device after long-time operation is reduced greatly. The sun's trajectory can be tracked effectively and accurately. The length of time when the sunlight is always perpendicular to the contact surface of solar equipment is increased. The utilization rate of sunlight is improved.

Description

technical field [0001] The invention belongs to the field of sun tracking and image processing, and in particular relates to a sun tracking correction method and device based on solar motion laws and image acquisition. Background technique [0002] As a clean energy, solar energy has the advantages of being renewable, green, and environmentally friendly. It is in line with the concept of sustainable development in modern society and building a green and environmentally friendly society, and has broad application prospects. And my country's "Twelfth Five-Year" development plan outline has clearly proposed "focus on the development of solar thermal utilization", indicating the importance of solar thermal utilization to energy conservation and emission reduction. Therefore, it is very important to track the sun's trajectory in real time and effectively increase the conversion rate and utilization rate of solar energy equipment. [0003] Traditional solar installations are basi...

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Application Information

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IPC IPC(8): G05D3/10G05D3/12
CPCG05D3/10G05D3/12
Inventor 侯北平王周敏穆清萍朱文周乐于爱华李刚
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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