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Technical Brief

Realization of an Inexpensive Embedded Mini-Datalogger for Measuring and Controlling Photovoltaic System

[+] Author and Article Information
Naim Houcine

Laboratory for Analysis and Applications
of Radiation (LAAR),
Department of Physics,
University of Science and Technology of Oran (USTO),
B.P. 1505, El M'nouar,
Oran 31024, Algeria
e-mail: naim_houcine@hotmail.fr

Hassini Abdelatif

Institute of Maintenance and Industrial Security,
University of Oran,
BP 05 Route de l'Aéroport,
Es-Senia Oran 31024, Algeria
e-mail: hassini.abdelatif@univ-oran.dz

Benabadji Noureddine

Laboratory for Analysis and Applications
of Radiation (LAAR),
Department of Physics,
University of Science and Technology of Oran (USTO),
B.P. 1505, El M'nouar,
Oran 31024, Algeria
e-mail: benanour2000@yahoo.com

Falil Fatima Zohra

Laboratory for Analysis and Applications
of Radiation (LAAR),
Department of Physics,
University of Science and Technology of Oran (USTO),
B.P. 1505, El M'nouar,
Oran 31024, Algeria
e-mail: falilfatimaz@yahoo.fr

Bouadi Abed

Laboratory for Mobilization and Optimization
of Industrial Systems (LAMOSI),
Department of Physics,
University of Science and Technology of Oran (USTO),
B.P. 1505, El M'nouar,
Oran 31024, Algeria
e-mail: abed_bou@yahoo.fr

1Corresponding author.

Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING: INCLUDING WIND ENERGY AND BUILDING ENERGY CONSERVATION. Manuscript received June 18, 2014; final manuscript received November 8, 2014; published online December 29, 2014. Assoc. Editor: Santiago Silvestre.

J. Sol. Energy Eng 137(2), 024502 (Apr 01, 2015) (5 pages) Paper No: SOL-14-1185; doi: 10.1115/1.4029232 History: Received June 18, 2014; Revised November 08, 2014; Online December 29, 2014

This article describes the design and the realization of an automatic recording device for measurements and controls of multiple physical parameters, in order to manage and monitor a mini central photovoltaic (PV) electricity. It is based on an 8-bit microcontroller, a PIC16F716, which is the lowest cost in the midrange portfolio from Microchip. The automatic recording device (or datalogger) measures the following parameters: the current sourced by a set of PV panels to solar batteries, the voltage across these batteries, the internal and the external temperatures, through a 4 channel multiplexed 8-bit analog–digital converter (ADC) integrated module. This datalogger is clocked with a real time clock and calendar (RTCC), which controls also the periodic measurements. These are stored in an external 8 kB flash electrically erasable/programable read-only memory (EEPROM), a 24LC64, using the I2C protocol, which allows us to easily increase the storage capacity by adding, if necessary, in parallel, up to eight external flash EEPROM.

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References

Figures

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Fig. 1

Diagram of the prototype device

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Fig. 2

The PIC16F716 circuit with its 4 MHz quartz

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Fig. 3

LCD display module in 8-bit classic mode

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Fig. 4

2 × 16 LCD display module in 4-bit mode using only 5 I/O lines

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Fig. 5

The three pushbuttons keyboard and the output RA4 (day/night tasks control)

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Fig. 6

The measurements circuitry for the 4 analog channels

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Fig. 7

Section external EEPROM

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Fig. 8

Detailed and completeness of the device constructed

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