Development of Stand-Alone DC Energy Datalogger for Off- Grid PV System Application Based on Microcontroller

2021 ◽  
Vol 30 (1) ◽  
pp. 185-199
Author(s):  
Mohd Ruzaimi Ariffin ◽  
Suhaidi Shafie ◽  
Wan Zuha Wan Hasan ◽  
Norhafiz Azis ◽  
Mohammad Effendy Yaacob ◽  
...  
Keyword(s):  
Liquid Crystal Display ◽  
Low Cost ◽  
Voltage Divider ◽  
Data Logger ◽  
Pv System ◽  
Output Measurement ◽  
Current Output ◽  
Energy Meter ◽  
Recorded Data ◽  
Sd Card

This article presents a microcontroller-based direct current (DC) energy data logger developed by adapting low-cost ATmega328 by measuring the PV system DC and voltage characteristics while simultaneously recording the measured value over time to compute the energy production Watt-hour (Wh). The prototype logger has been tested on a live 1 kW standalone PV system where the voltage sensor detects PV series array output voltage ranging between 0–50 VDC by a voltage divider sensing circuit. For accurate sensing of the current output measurement from the PV array, 50A ACS756 hall effect IC was integrated as the current sensor. The data was measured and saved in text format with comma-separated values (CSV) in an SD card, read using Microsoft Excel software. The liquid crystal display (LCD) showed the actual value of the recording process’s current, voltage, power, and duration in minutes. The recorded data has been compared to the standard laboratory digital multimeter for calibration manually to justify the measurement value. The error is minimized to 0.6% average by varying the constant float value in the programming code. The advantage of developing this logger is that the development cost is much cheaper than the standard commercial PV energy meter, can be reproduced for other DC application energy measurements, and easily modify the voltage and current range to suit the application. Apart from that, this logger also provides high accuracy performance, and its independent characteristic is practical for off-grid or off-site PV system use.

scholarly journals Desain dan Implementasi Data Logger untuk Pengukuran Daya Keluaran Panel Surya dan Iradiasi Matahari

2020 ◽  
Vol 8 (2) ◽  
pp. 240
Author(s):  
APIP PUDIN ◽  
IGNATIUS RIYADI MARDIYANTO
Keyword(s):  
Data Storage ◽  
Solar Power ◽  
Voltage Divider ◽  
Measurement Range ◽  
Solar Irradiation ◽  
Data Logger ◽  
Pv System ◽  
Power Meter ◽  
Average Value ◽  
Sensor Module

ABSTRAKInformasi mengenai daya keluaran panel surya dan intensitas radiasi matahari diperlukan dalam sistem PLTS guna mengetahui karakteristik potensi daya yang dibangkitkan panel dan estimasi besarnya beban yang terpasang. Dalam penelitian ini, telah dirancang perangkat data logger berbasis Arduino Uno dengan media penyimpan data berupa kartu MicroSD dan format data MS Excel. Parameter daya diperoleh menggunakan modul sensor tegangan dengan prinsip pembagi tegangan dan sensor arus dengan resistor shunt. Intensitas radiasi diperoleh dari sensor Solar Power Meter menggunakan interface kabel RS232 to TTL. Hasil menunjukan nilai rata-rata error tegangan sebesar 36 mV atau inakurasi 0,41% untuk rentang pengukuran dari 0,7 V sampai 24 V, sedangkan rata-rata error arus sebesar 10 mA atau inakurasi 0,42% untuk pengukuran dari 0,3 A sampai 7,5 A. Nilai inakurasi ini masih dibawah nilai rata-rata alat ukur standar yang ada di pasaran sekitar 1%, sehingga hasil rancangan ini bisa digunakan untuk keperluan pengukuran.Kata kunci: tegangan, arus, daya, iradiasi matahari, Arduino ABSTRACTInformation about the output power of solar panels and the intensity of solar radiation are needed in the PV system to determine the characteristics of the power generated by the panel and the estimated amount of installed load. In this research, an Arduino-based data logger has been designed with a MicroSD card data storage media and a MS Excel data format. Power parameters are obtained using a voltage sensor module with the principle of a voltage divider and a current sensor with a shunt resistor. The radiation intensity is obtained from the Solar Power Meter sensor using a RS232 to TTL cable interface. The results show the average of voltage error is 36 mV or inaccuracy is 0.41% for the measurement range from 0.7 V to 24 V, while the average of current error is 10 mA or inaccuracy is 0.42% for the measurement from 0.3 A to 7.5 A. This inaccuracy value is still below the average value of standard measurement tools on the market about 1%, so the results of this design can be used for the purpose of measurements.Keywords: voltage, current, power, solar irradiation, Arduino

scholarly journals Design and implementation of an indoor solar emulator based low-cost autonomous data logger for PV system monitoring

2019 ◽  
Vol 10 (3) ◽  
pp. 1645
Author(s):  
Oday A. Ahmed ◽  
Hussain K Sayed ◽  
Kanaan A Jalal ◽  
Dhari Y. Mahmood ◽  
Waleed H. Habeeb
Keyword(s):  
Data Acquisition ◽  
Low Cost ◽  
Data Acquisition System ◽  
Acquisition System ◽  
Renewable Energy Resources ◽  
Data Logger ◽  
Pv System ◽  
Partial Shading ◽  
Pv Systems ◽  
Pv Panel

With the growing interest in renewable energy resources, a various number of studies and development for photovoltaic (PV) systems have investigated to satisfy global needs in energy. The larger interest in PV resources has increased request for suitable apparatus with which to test PV systems. This paper deals with the design of an indoor PV source emulator using an actual PV panel to facilitate PV system testing under real environment conditions. A low-cost Arduino Mega256 microcontroller-based data acquisition system (DAQ) approach has been developed to collect the data in term of voltage, power and current based on different levels of light intensity and temperature as well as under partial shading conditions. Hence, the proposed system is not just a solar emulator but it’s a complete solar emulator-DAQ system that can emulate the sunlight and monitor the PV parameters and then collect and store the data for further research investigation. The proposed monitoring system provides real time update of the solar panel characteristics at any time in the year without relying on the weather changes. This data acquisition system will be of superior interest for undergraduate and graduate students as it is both open-source and flexible. The details design of the proposed PV solar emulator and data logger and its implementation are described.

scholarly journals DESENVOLVIMENTO DE UM TENSIÔMETRO DIGITAL COM SISTEMA DE AQUISIÇÃO E ARMAZENAMENTO DE DADOS

Irriga ◽  
2017 ◽  
Vol 1 (1) ◽  
pp. 11-20
Author(s):  
Luiz Eduardo Vieira de Arruda ◽  
VLADIMIR BATISTA FIGUEIRÊDO ◽  
SÉRGIO LUIZ AGUILAR LEVIEN ◽  
JOSÉ FRANCISMAR DE MEDEIROS
Keyword(s):  
Real Time ◽  
Data Storage ◽  
Liquid Crystal Display ◽  
Low Cost ◽  
Soil Water Tension ◽  
Real Time Clock ◽  
Voltage Transducer ◽  
Water Tension ◽  
Sd Card ◽  
E Mail

DESENVOLVIMENTO DE UM TENSIÔMETRO DIGITAL COM SISTEMA DE AQUISIÇÃO E ARMAZENAMENTO DE DADOS LUIZ EDUARDO VIEIRA DE ARRUDA1; VLADIMIR BATISTA FIGUEIRÊDO2; SÉRGIO LUIZ AGUILAR LEVIEN3 E JOSÉ FRANCISMAR DE MEDEIROS4 1Mestre, Doutorando do Programa de Pós Graduação em Manejo de Solo e Água (PPGMSA), bolsista da CAPES; Universidade Federal Rural do Semi-Árido (UFERSA); Av. Francisco Mota, 572; Bairro Costa e Silva; 59.625-900, Mossoró/RN; e-mail: [email protected] de Ciências Ambientais e Tecnológicas (DCAT), UFERSA, Av. Francisco Mota, 572; Bairro Costa e Silva; 59.625-900, Mossoró, RN; e-mail: [email protected]; [email protected]; [email protected]  1 RESUMO Para um bom manejo da água na agricultura faz-se necessário a utilização de instrumentos que auxiliem o agricultor na tomada de decisão, indicando quanto e quando se deve aplicar água às culturas. Em face do exposto, notou-se a necessidade do desenvolvimento de um tensiômetro com sistema de aquisição e armazenamento de dados de forma contínua a baixo custo. O modelo proposto é composto por: cápsula porosa (25 x 11 mm), hastes de acrílico transparente com diâmetros de 12 e 15 mm, tampa de borracha siliconada, mangueira plástica transparente, mangueira de borracha e transdutores de tensão modelo Motorola® MPX 5100AP. Para a construção do sistema de aquisição dos dados foi utilizado uma placa Arduino® modelo MEGA 2560, três capacitores, placa fenolítica, bornes, jumpers, cabo quatro vias, RTC (Real Time Clock) modelo DS1307, display de cristal líquido (16 x 2), módulo de cartão de memória SD card, fonte de computador bivolt para alimentação de todo sistema com tensão de 12 Vcc e caixa plástica para acondicionamento dos circuitos. Como resultado da calibração do transdutor de tensão obteve-se uma equação com R2 igual a 0,9996, apresentando ótimo ajuste de acordo com o valor obtido. Palavras-chave: Arduino, transdutor de tensão, tensão de água no solo  ARRUDA, L. E. V.; FIGUEIRÊDO, V. B.; LEVIEN, S. L. A.; MEDEIROS, J. F.DEVELOPMENT OF A DIGITAL SOIL TENSIOMETER WITH A SYSTEM FOR INPUTTING AND STORING DATA  2 ABSTRACT In order to have a good water management in agricultural processes, it is necessary to use instruments that will assist the farmer in the decision-making processes, indicating how much and when to apply water to the crops. Considering the aforementioned, it was noted the demand of development of a tensiometer in conjunction with a data storage and input system, inputting and storing data continuously and at low cost. The proposed model consists of a porous capsule (25 x 11 mm), clear acrylic tube with diameters of 12 and 15 mm, a silicone rubber cap, a clear plastic hose, a rubber hose and voltage transducers Motorola® MPX5100AP model. In order to create the data system used an Arduino® platform model MEGA 2560, three capacitors, a phenolic sheet, terminals, jumpers, a four-way cable, a Real Time Clock (RTC) model DS1307, a liquid crystal display (16 x 2), a Micro SD memory card module, a dual voltage computer to supply power to the whole system using 12 Vcc voltage and plastic housing to store the circuit. The voltage transducer calibration resulted in an equation meaning that R2 is equal to 0.9996, thus presenting an optimal adjustment according to the obtained value. Keywords: Arduino, voltage transducer, soil water tension

scholarly journals A Study of Shading Effect on Photovoltaic Modules with Proposed P&O Checking Algorithm

2017 ◽  
Vol 7 (1) ◽  
pp. 29 ◽  
Author(s):  
Rozana Alik ◽  
Awang Jusoh ◽  
Tole Sutikno
Keyword(s):  
Low Cost ◽  
Maximum Level ◽  
Maximum Power ◽  
Variable Step Size ◽  
Solar Pv ◽  
Step Size ◽  
Pv System ◽  
Solar Module ◽  
Partial Shading ◽  
Current Output

<p>Sun irradiation levels and associated temperature changes are the main factors that influence the conversion of solar energy into electricity. Most energy is produced during a hot sunny day as the sun irradiation is at the maximum level and uniform throughout the solar photovoltaic (PV). However, most solar PV were frequently get shadowed, completely or partially, by the neighbouring buildings, trees and passing clouds. Consequently, the solar PV has lower voltage and current output; hence, multiple maximum power points (MPP) are existed on the PV curve, which could cause confusion to the conventional Maximum Power Point Tracker (MPPT) to track the true MPP for the PV system. Thus, it is important to examine the impacts of partial shading on the solar PV in order to extract the maximum possible power. This paper presents a MATLAB-based modelling for simulation and experimental setup to study the I-V and P-V characteristics of a solar module under a non-uniform irradiation due to partial shading condition (PSC).  Furthermore, this study is also proposed an effective method (a variable step size of P&amp;O with checking algorithm) that is low cost and higher tracking efficiency. Thus, this study is essential in improving and evaluating any new MPPT algorithm under the PSC.</p>

Design of the data logger with IEC standard for PV system

2019 ◽  
Author(s):  
Orrawan Rewthong ◽  
Usa Boonbumroong ◽  
Thatree Mamee ◽  
Busarin Eamthanakul ◽  
Narun Luewarasirikul ◽  
...  
Keyword(s):  
Data Logger ◽  
Pv System

scholarly journals Brief Communication: A low-cost Arduino<sup>®</sup>-based wire extensometer for earth flow monitoring

2017 ◽  
Vol 17 (6) ◽  
pp. 881-885 ◽  
Author(s):  
Luigi Guerriero ◽  
Giovanni Guerriero ◽  
Gerardo Grelle ◽  
Francesco M. Guadagno ◽  
Paola Revellino
Keyword(s):  
High Reliability ◽  
Low Cost ◽  
Mitigation Measures ◽  
Thermal Drift ◽  
Data Logger ◽  
Test Configuration ◽  
Flow Monitoring ◽  
Earth Flow ◽  
Flow Displacement ◽  
Additional Monitoring

Abstract. Continuous monitoring of earth flow displacement is essential for the understanding of the dynamic of the process, its ongoing evolution and designing mitigation measures. Despite its importance, it is not always applied due to its expense and the need for integration with additional sensors to monitor factors controlling movement. To overcome these problems, we developed and tested a low-cost Arduino-based wire-rail extensometer integrating a data logger, a power system and multiple digital and analog inputs. The system is equipped with a high-precision position transducer that in the test configuration offers a measuring range of 1023 mm and an associated accuracy of ±1 mm, and integrates an operating temperature sensor that should allow potential thermal drift that typically affects this kind of systems to be identified and corrected. A field test, conducted at the Pietrafitta earth flow where additional monitoring systems had been installed, indicates a high reliability of the measurement and a high monitoring stability without visible thermal drift.

Study on Coal Mine Gas Monitoring System Based on Arduino

2014 ◽  
Vol 1073-1076 ◽  
pp. 2173-2176 ◽  
Author(s):  
Hui Chun Gao ◽  
Chao Jun Fan ◽  
Jun Wen Li ◽  
Ming Kun Luo
Keyword(s):  
Monitoring System ◽  
Coal Mine ◽  
Low Cost ◽  
Gas Monitoring ◽  
Underground Coal Mine ◽  
Gas Concentration ◽  
Coal Mine Gas ◽  
Good Market ◽  
Mine Gas ◽  
Sd Card

Aimed at the frequency gas accident of coal mine, we designed a coal mine gas monitoring system based on Arduino microcontroller. The MQ-4 gas sensor was used to collect gas concentration, wireless ZigBee was used to transfer data of gas concentration to PC. The system can display gas concentration real-timely by LCD and use SD card to store the data. The system will send out sound and light alarm when the gas concentration overruns. Industrial tests have been carried out in Wuyang coal mine. Results show that gas monitoring system can well adapt to environment of underground coal mine and the measurement is accurate. The system is real-time monitoring and early warning. It has the characteristics of low power consumption, low cost, wireless, good market prospect.

Event-Locked Time-Resolved Fourier Spectroscopy

1997 ◽  
Vol 51 (8) ◽  
pp. 1106-1112 ◽  
Author(s):  
H. Weidner ◽  
R. E. Peale
Keyword(s):  
Signal To Noise Ratio ◽  
Low Cost ◽  
Michelson Interferometer ◽  
Far Infrared ◽  
Time Base ◽  
The Novel ◽  
Time Resolved ◽  
Mathematical Algorithm ◽  
Scan Time ◽  
Recorded Data

A low-cost method of adding time-resolving capability to commercial Fourier transform spectrometers with a continuously scanning Michelson interferometer has been developed. This method is specifically designed to eliminate noise and artifacts caused by mirror-speed variations in the interferometer. The method exists of two parts: (1) a novel timing scheme for synchronizing the transient events under study and the digitizing of the interferogram and (2) a mathematical algorithm for extracting the spectral information from the recorded data. The novel timing scheme is a modification of the well-known interleaved, or stroboscopic, method. It achieves the same timing accuracy, signal-to-noise ratio, and freedom from artifacts as step-scan time-resolving Fourier spectrometers by locking the sampling of the interferogram to a stable time base rather than to the occurrences of the HeNe fringes. The necessary pathlength-difference information at which samples are taken is obtained from a record of the mirror speed. The resulting interferograms with uneven pathlength-difference spacings are transformed into wavenumber space by least-squares fits of periodic functions. Spectra from the far-infrared to the upper visible at resolutions up to 0.2 cm−1 are used to demonstrate the utility of this method.

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