Sunlight tracking sensor

A sensor, sunlight technology, applied in the direction of control using feedback, can solve the problems of high system cost, the tracking accuracy cannot meet the requirements, and the tracking is inaccurate, and achieves the effect of less shading, simple structure and low cost

Active Publication Date: 2015-08-05
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing technical solutions include "GPS positioning" and the general "four-quadrant photoelectric type". It is also impossible to meet the requirement

Method used

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Embodiment 1

[0022] Such as figure 1 and figure 2 As shown, a sunlight tracking sensor includes a tubular housing 4, the tubular housing 4 is elongated, the top of the tubular housing 4 is provided with a light-transmitting panel 2, and the light-transmitting panel 2 The center is provided with a square shading film 2-1, such as figure 2 and image 3 As shown, the shading film 2-1 is projected on the square shaded area 1-1 in the center of the circuit board 1 at the bottom of the tubular housing 4, and each of the midpoints of the four sides of the square shaded area 1-1 is mounted with a The photosensitive tubes U1-U4 with overlapping sides, the four photosensitive tubes and the four voltage comparators form a working circuit.

[0023] Such as Figure 4 Shown, described photosensitive tube wafer radius X and photosensitive tube surface to the size of the distance Y of described light-transmitting plate surface determines tracking precision, and the design of tracking precision uses ...

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PUM

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Abstract

The invention discloses a sunlight tracking sensor. The sunlight tracking sensor comprises a tubular housing, the tubular housing is long-strip-shaped, the top portion of the tubular housing is provided with a light transmitting panel 2, the center of the light transmitting panel is provided with a square photomask, the photomask is projected in a square shadow region at the center of a circuit board at the bottom of the tubular housing, the center points of four edges of the square shadow region are each provided with a photosensitive tube superposed with the four edges in an attached mode, and the photosensitive tubes and four voltage comparators form a working circuit. The sunlight tracking sensor is simple in structure and low in cost. The tracking precision can be smaller than + / -0.05 DEG, the cross section is small, the sunlight tracking sensor and a reflective mirror heat collector form a three-point one-line arrangement, the shading is small, and the sunlight tracking sensor is especially suitable for sunlight tracking of a heliostat.

Description

technical field [0001] The invention relates to precision sunlight tracking sensor technology and belongs to the technical field of new energy applications. Background technique [0002] Because the earth can use less and less energy, and solar energy is an inexhaustible energy. As a clean and pollution-free new energy source, solar energy has been widely concerned and used in recent years. Sun tracking can increase the utilization rate of solar energy by 40%. In order to further improve the utilization rate of solar energy, the third generation of concentrated photovoltaic cells has come out. For applications, the tracking accuracy of sunlight is required to reach ±0.1°, while the heliostat for solar thermal power generation requires higher tracking accuracy for the reflected light of the sun. At present, the existing technical solutions include "GPS positioning" and the general "four-quadrant photoelectric type". It is also impossible to meet this requirement. Contents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D3/12
Inventor 周祥才杨景华朱锡芳陆兴中赵宇
Owner CHANGZHOU INST OF TECH
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