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Angle measuring method for sun precision tracking and digital photoelectric angle sensor

An angle sensor, precision tracking technology, applied in the direction of conversion sensor output, measuring device, measuring device casing, etc., can solve the problems of low measurement accuracy, large measurement error, missing targets, etc., to achieve simple angle calibration, high accuracy, enhanced Effects of Control and Data Acquisition

Inactive Publication Date: 2011-03-30
曹彦波
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Problems solved by technology

[0007] One of the purposes of the present invention is to provide an angle measurement method for precise tracking of the sun, which solves the problems in the prior art that the sensit

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  • Angle measuring method for sun precision tracking and digital photoelectric angle sensor
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  • Angle measuring method for sun precision tracking and digital photoelectric angle sensor

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. The specific technical indicators of the embodiment are as follows: field of view: ±24°, resolution 0.025°, linear array CCD with 2048 pixels, and slit length of 30mm.

[0037] The photoelectric measurement method of the sun's parallel light incident angle for precise tracking of the sun is based on the slit imaging principle and realized by a digital line array CCD photoelectric sensor. Its basic measurement principle is as figure 1 As shown, the basic steps of the measurement method are as follows:

[0038] It is known that the pixel width of the linear CCD is a, and the distance between the center line of the slit and the surface of the photosensitive pixel of the linear CCD is H.

[0039] The coded position of the pixel obtained by the orthographic projection of the center line of the slit on the surface of the CCD pixel is N0, and this is taken a...

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Abstract

The invention relates to an angle measuring method for sun precision tracking and a digital photoelectric angle sensor, which belong to the fields of solar energy application and meteorological observation instruments. The measuring method is based on the slit imaging principle, and parallel light incident from the sun is imaged on a CCD (Charge Coupled Device) photosensitive unit through an optical imaging unit. The incident angle of the sun light in one direction at a certain moment is obtained through measuring pixel code position signals corresponding to light spot centroid and carrying out arc tangent calculation by known parameters. The digital photoelectric angle sensor comprises the optical imaging unit, a photoelectric detecting unit, an information processing unit, an output interface unit, a casing and the like. The incident angle of the incident light of the sun in two directions can be precisely measured by the method and two digital photoelectric angle sensors of the invention, precise sun azimuth signals can be provided, and the precision tracking and the radiation measurement of sun targets can be realized. The sensor has the advantages of simple structure, small size, no chromatic aberration, precise measurement angle and high accuracy.

Description

technical field [0001] The invention relates to the fields of solar energy applications and meteorological observation instruments, in particular to an angle measurement method and a digital photoelectric angle sensor for precise tracking of the sun. Background technique [0002] Energy is an important support for the existence and development of human civilization, and an indispensable resource for human survival. However, at present, the traditional fossil fuels in the world are decreasing, and there is an urgent need to find alternative energy sources for human production and life. Among all kinds of alternative energy sources, solar energy is more and more favored by people because of its inexhaustible, inexhaustible, clean and environmental protection, freedom and fairness, and has become the focus of people's attention. [0003] As a clean energy source, the current use of solar energy by humans mainly includes two forms: photoelectric conversion and photothermal conve...

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Application Information

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IPC IPC(8): G01B11/26G01D5/347G01D11/24
Inventor 曹彦波赵晓波曹博成
Owner 曹彦波
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