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The Development of Sun-Tracking System Using Image Processing

Authors
Journal
Sensors
1424-8220
Publisher
MDPI AG
Publication Date
Volume
13
Issue
5
Identifiers
DOI: 10.3390/s130505448
Keywords
  • Article
Disciplines
  • Computer Science

Abstract

This article presents the development of an image-based sun position sensor and the algorithm for how to aim at the Sun precisely by using image processing. Four-quadrant light sensors and bar-shadow photo sensors were used to detect the Sun's position in the past years. Nevertheless, neither of them can maintain high accuracy under low irradiation conditions. Using the image-based Sun position sensor with image processing can address this drawback. To verify the performance of the Sun-tracking system including an image-based Sun position sensor and a tracking controller with embedded image processing algorithm, we established a Sun image tracking platform and did the performance testing in the laboratory; the results show that the proposed Sun tracking system had the capability to overcome the problem of unstable tracking in cloudy weather and achieve a tracking accuracy of 0.04°.

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