Solar tracking system using periodic scan patterns with a shielding tube
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United States of America Patent
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Nov 4, 2014
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app pub date -
May 29, 2012
filing date -
May 29, 2012
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Abstract
A solar tracking system and method that use a shielding tube that admits solar radiation and has an absorptive inner surface for absorbing the solar radiation that is incident on it. The system has a photodetector for generating a signal related to an intensity of solar radiation at a distal end of the shielding tube and a scan unit for periodically executing a certain scan pattern in an elevation angle El and in an azimuth angle Az of the shielding tube. A processing unit in communication with the photodetector determines an on-sun orientation of the shielding tube based on a convolution of the signal obtained while executing the scan pattern with a trained convolution kernel. The on-sun orientation thus found can be used to update the orientation of one or more solar surfaces, e.g., reflective or photovoltaic surfaces.
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