Photoelectric sensor for sunlight angle detection and detection method thereof

Abstract

The invention discloses a photoelectric sensor for sunlight angle detection. The photoelectric sensor comprises: a shading shell, first light-transmitting glass, second light-transmitting glass, a silicon photocell and a signal processing module. The shading shell is in an L shape, the first light-transmitting glass is arranged in a square area located at the right angle of the shading shell, thesecond light-transmitting glass is arranged on two sides of the first light-transmitting glass respectively, and the two pieces of second light-transmitting glass are perpendicularly arranged. The second light-transmitting glass is in an inverted-T shape, and the cross section of the protruding part is in an isosceles trapezoid shape. The photosensitive surface of the silicon photocell is in the shape of an isosceles triangle, and the silicon photocell is arranged right under the first light-transmitting glass and the second light-transmitting glass and is tightly attached to the bottom surface of the first light-transmitting glass and the bottom surface of the second light-transmitting glass. And the signal processing module is arranged at the bottom of the shading shell. In the invention, the structure of the second light-transmitting glass solves the problem of small sunlight detection range of the photoelectric sensor, and the invention also provides a sunlight angle detection method, which utilizes the structural characteristics of the silicon photocell to calculate the azimuth angle and the elevation angle of sunlight.

Description

Technical field: [0001] The invention relates to the technical field of photoelectric sensors, in particular to a photoelectric sensor for detecting sunlight angles and a detection method thereof. Background technique: [0002] With the continuous improvement of solar energy technology, the development and utilization of solar energy has been closely related to human production and life. The existing solar technology products on the market include solar water heaters, solar street lamps, solar garden lights, etc. The key to solar products is how to improve the tracking accuracy and reliability of sunlight. [0003] The reliability of the current automatic sunlight tracking technology depends on the detection accuracy of the sunlight detection device. The existing automatic tracking technology mainly adopts the comparison control method. When the optical axis is aligned with the sun, the light spot formed by the sunlight irradiating on the silicon photovoltaic cell through t...

AI Technical Summary

Problems solved by technology

The existing automatic tracking technology mainly adopts the comparative control method. When the optical axis is aligned with the sun, the light spot formed by the sunlight irradiated on the silicon photovoltaic cell through the optical system will inevitably shift, resulting in the final voltage generated by each quadrant cell. In the same way, the automatic tracking is realized by comparing the potential difference in the horizontal and vertical directions with the horizontal and vertical directions. This similar method can only realize automatic tracking through the output signal difference, and cannot accurately calculate the azimuth information of the sun, and the control is reliable. Sex is not high

If you want to improve the measurement accuracy, you can increase the number of silicon photovoltaic panels, which will increase the cost

In addition, due to the structure of the optical system, the detection angle of sunlight will become smaller, making it impossible to accurately determine the exact position of sunlight. The installation accuracy and structural settings of silicon photovoltaic cells may cause malfunctions of the actuator. These factors are Directly affects the detection accuracy of the sunlight sensor

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