NDLI: Development of a low cost sun sensor using quadphotodiode

Content Provider	IEEE Xplore Digital Library
Author	Maqsood, I. Akram, T.
Copyright Year	2010
Description	Author affiliation: Masdar Institute of Science and Technology, Abu-Dhabi 54224, United Arab Emirates (Maqsood, I.) \|\| Technical University of Hamburg-Harburg, 21073, Germany (Akram, T.)
Abstract	This paper describes about the design and hardware implementation of a low cost model of a two axis sun sensor using a quad photo diode, which can determine the azimuth and elevation angles of Sun in sensor's body frame of reference. The sensor uses quad photodiode to obtain angular information of Sun. It weighs less than 100g (which can be further reduced by optimizing the housing design). The relevant software requires 50K bytes of memory and little processing. We have also developed sensor calibration test bed (SCTB) which will also be the part of this paper. SCTB is used to calibrate the developed Sun Senor; during calibration the whole surface of sun sensor (quad photodiode) is scanned for a field of view (FOV) equal to 60 × 60. Step size during calibration is set to one degree so we get elevation and azimuth matrices each having 3721 values. The calibration process is fully automated with the help of algorithms written in Matlab. The step size used in calibration is adjustable and we can calibrate the sensor even less than one degree using this SCTB. Azimuth and elevation matrices generated during calibration are used as error correcting tables during real-time measurements taken by the sun sensor. Sun sensor is calibrated in front of Sun simulator made by the Optical Energy Technologies USA.
Starting Page	639
Ending Page	644
File Size	1192353
Page Count	6
File Format	PDF
ISBN	9781424450367
ISSN	21533598
DOI	10.1109/PLANS.2010.5507186
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Sun Calibration Azimuth Sensor phenomena and characterization Photodiodes Optical sensors Hardware Mathematical model Diodes Sun Tracker quad photodiode calibration Sun sensor position sensors
Content Type	Text
Resource Type	Article

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