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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:36 |
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Conference: Bucharest University Faculty of Physics 2018 Meeting
Section: Physics Education
Title:
Device for plotting the current-voltage characteristic of a photovoltaic cell using Arduino Yun
Authors:
Luminita DAN(1), Cristina MIRON(1), Stefan ANTOHE(1,2)
*
Affiliation:
1)University of Bucharest, Faculty of Physics, P.O.Box MG-11, Magurele, 077125 Bucharest, Romania
2)Academy of Romanian Scientists, Splaiul Independentei 54, 050094, Bucharest, Romania
E-mail
luminitaot@yahoo.com
Keywords:
Arduino Yun, characteristic current-voltage, photovoltaic cell
Abstract:
Making a good student training involves performing experiments which consist in reading of parameter values, data recording and analysis in a very short time. In this paper we present an electronic device, based on the Arduino Yun development board, which performs the steps of the classic experiment of plotting the current-voltage characteristic of a photovoltaic cell. Modification of load resistance is achieved by means of a variable-voltage MOS transistor ordered in the grid. The entire measurement process is conducted by a microcontroller that performs direct voltage measurement and also the measurement of the current through a Hall effect sensor. The measured values are written in a text file on an SD card within the timeframe given by the conditions Vcell = 0V at one end and the Icell = 0A at the other end. Communication with the device is done on a html page via a microprocessor running an OS which controls an Ethernet and a WI-FI module.
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