scholarly journals Development of Alternating Current (AC) Line Monitoring Device for Power System Management

2020 ◽  
Vol 9 (1) ◽  
pp. 17-22
Author(s):  
T.A. Obagade ◽  
S.G. Konyeha
Keyword(s):  
Liquid Crystal Display ◽  
Alternating Current ◽  
System Management ◽  
Monitoring Device ◽  
Overall Design ◽  
Half Wave ◽  
Nominal Voltage ◽  
Frequency Meter ◽  
Arduino Microcontroller ◽  
Sd Card

This work presents a study of the effect of imbalance between the supply of and demand of power from the National grid on electrical appliances. In the study, an alternating current (ac) line monitoring device was developed using arduino microcontroller to carry out the investigation. The device is a single system capable of measuring both the main frequency and nominal voltage of electricity supply. The device consists of seven major components: 12 V step-down transformer, half-wave rectifier, attenuator, wave-shaping circuit, arduino microcontroller, Liquid crystal display and micro SD card. The heart of the device is the arduino microcontroller that reads the period of the pulses from the shaping circuit and the output voltage from the scale resistor connected to the attenuator circuit in order to measure the levels frequency and voltage of the ac main source. By graphically compared the reading of the voltage obtained by the ac monitoring device with that of the standard Mastech voltmeter, it was shown that the device has a good correlation with the standard voltmeter with a deviation of ±0.21%, and this has proven that the device is capable of measuring ac voltage accurately. From the frequency test level results, it was found that the frequency measured by the device closely related to the frequency measured by the standard frequency meter. This shows that the device satisfied the requirement of the overall design. Hence, it can be used in the laboratory for demonstration and research purposes as well as in power plant industries. Keywords: Mains frequency, nominal voltage, half-wave rectifier, attenuator, wave-shaping circuit, Arduino microcontroller

Research and Application of Mine Roadway Deformation Monitoring by Ultrasonic Technology

2014 ◽  
Vol 962-965 ◽  
pp. 1070-1074 ◽  
Author(s):  
Sheng Li ◽  
Xin Lin Jin ◽  
Ming Kun Luo ◽  
Chao Jun Fan
Keyword(s):  
Data Storage ◽  
Coal Mine ◽  
Deformation Monitoring ◽  
Mine Production ◽  
Ultrasonic Technology ◽  
Mine Roadway ◽  
Distance Sensor ◽  
Arduino Microcontroller ◽  
Roadway Deformation ◽  
Sd Card

Coal mine roadway deformation have a significant impact on coal mine production. Based on the Arduino microcontroller system and ultrasonic distance sensor, through temperature compensation and system fixes, designed a roadway deformation monitoring system which is high accuracy, low price and simple operation. Monitoring results through the LCD display, and SD card for data storage, the system achieved real-time monitoring of roadway deformation. The system was actually tested in coal mine, and achieved good monitoring results.

A half-wave rectified alternating current electrochemical method for uranium extraction from seawater

Nature Energy ◽  
2017 ◽  
Vol 2 (4) ◽  
Author(s):  
Chong Liu ◽  
Po-Chun Hsu ◽  
Jin Xie ◽  
Jie Zhao ◽  
Tong Wu ◽  
...  
Keyword(s):  
Electrochemical Method ◽  
Alternating Current ◽  
Uranium Extraction ◽  
Half Wave

Method for measuring the alternating current half-wave voltage of a Mach–Zehnder modulator based on opto-electronic oscillation

2018 ◽  
Vol 57 (13) ◽  
pp. 3570 ◽  
Author(s):  
Jun Hong ◽  
Dongchu Chen ◽  
Zhiqiang Peng ◽  
Zulin Li ◽  
Haibo Liu ◽  
...  
Keyword(s):  
Alternating Current ◽  
Half Wave Voltage ◽  
Half Wave ◽  
Mach Zehnder Modulator

scholarly journals Design an Infusion Device Analyzer with Flow Rate Parameters using Photodiode Sensor

2021 ◽  
Vol 3 (2) ◽  
pp. 39-44
Author(s):  
Andjar Pudji Pudji ◽  
Anita Miftahul Maghfiroh ◽  
Nuntachai Thongpance
Keyword(s):  
Flow Rate ◽  
Liquid Crystal Display ◽  
Infusion Pump ◽  
Average Error ◽  
Syringe Pump ◽  
Primary Health ◽  
Infusion Device ◽  
Infusion Devices ◽  
Nutrition And Hydration ◽  
Sd Card

Infusion devices are the basis for primary health care, that is to provide medicine, nutrition, and hydration to patients. One of the infusion devices is a syringe pump and an infusion pump. This device is very important to assist the volume and flow that enters the patient's body, especially in situations related to neonatology or cancer treatment. Therefore, a comparison tool is needed to see whether the equipment is used or not. The purpose of this research is to make an infusion device analyzer (IDA) design with a flow rate parameter. The contribution of this research is that the tool can calculate the correct value of the flow rate that comes out of the infusion pump and syringe pump. The water released by the infusion pump or syringe pump will be converted into droplets which are then detected by the sensor. This tool uses an infrared sensor and a photodiode. The results obtained by the sensor will come by Arduino nano and code it to the 16x2 Character Liquid Crystal Display (LCD) and can be stored on an SD Card so that it can be analyzed further. In setting the flow rate for the syringe pump of 100 mL / hour, the error value is 3.9, 50 ml / hour 0.02, 20 mL / hour 0.378, 10 mL / hour 0.048, and 5 mL / hour 0.01. The results show that the average error of the syringe pump performance read by the module is 0.87. The results obtained from this study can be implemented for the calibration of the infusion pump and the syringe pump so that it can be determined whether the device is suitable or not

scholarly journals A Centrifuge Calibrator Based on Personal Computer Equipped with Data Processor

2019 ◽  
Vol 1 (1) ◽  
pp. 14-19
Author(s):  
Habliya Asadina ◽  
Torib Hamzah ◽  
Dyah Titisari ◽  
Bedjo Utomo
Keyword(s):  
Certified Reference Materials ◽  
International Standards ◽  
Holter Monitor ◽  
Laser Sensors ◽  
Heart Monitoring ◽  
Main Series ◽  
Data Processor ◽  
Arduino Microcontroller ◽  
Sd Card ◽  
Calibration Laboratories

Calibration is an activity to determine the conventional truth of the value of the appointment of a measuring instrument by comparing traceable standards to national and international standards for measurement and / or international units and certified reference materials. The purpose of this study is to develop a system of efficient and practical centrifuge calibrators by sending the calibration results directly via bluetooth to a PC. The main series of centrifuge calibrators are Arduino modules, laser sensors and Bluetooth.The high low signal is obtained from the reflection of the laser beam aimed at the reflector point on the centrifuge plate, processed in the Arduino module and displayed on the LCD, the calibration results can be directly seen in the Delphi program. The design of this module is also equipped with a Bluetooth transmitter to send data to a PC. This module can be used in medical equipment calibration laboratories. Based on the results of testing and data collection on the 8 Tube centrifuge with a Lutron Tachometer ratio, the error value was 0.0136%. After planning, experimenting, making modules, testing modules, and collecting data, it can be concluded that the tool "centrifuge calibrator equipped with PC-based data processors" can be used and according to planning because the fault tolerance does not exceed 10%.Keywords—Holter Monitor; Heart Monitoring; Arduino Microcontroller; SD Card Memory

scholarly journals Enhanced Security Methods of Door Locking Based Fingerprint

2020 ◽  
Vol 9 (3) ◽  
pp. 1173-1178 ◽  
Keyword(s):  
Liquid Crystal Display ◽  
Security System ◽  
Alarm System ◽  
The People ◽  
Web Camera ◽  
Monitoring Camera ◽  
Arduino Microcontroller ◽  
Pass Through ◽  
Opening And Closing ◽  
Lcd Displays

This paper presents an enhanced methodology in implementing and designing a security system for door locking purpose based on fingerprint, GSM technology, monitoring camera, alarm system and password system. This security system will provide enough security by limiting unauthorized people access and taking a record of those who pass through it. Sometimes unauthorized people or burglars try to break the door for evil intentions at a time when no one is available at a targeted place, so this paper introduces some security solutions for that problem and they are the main contribution of our paper. We introduce an alarm system to alert the people at the surroundings, GSM module that’s used to send an SMS message to the registered user’s (responsible person) and a web camera that’s used to take a video for a person who tries to break the lock, password keypad that’s used after fingerprint sensing to provide extra security. Definitely the registered users are the only persons who can access the lock, and the door closes after five seconds from the opening time. The method used to implement this experiment involves the use of a fingerprint scanner R305 that’s interfaced with Arduino microcontroller-ATMEGA328P to control the locking and unlocking process of a door. During all the opening and closing processes, the16x2 Liquid Crystal Display (LCD) displays some commands which can be used to instruct the users like, place your finger on the sensor, the door is opened, the door is closed, the message is sent, please enter the password etc. If an unregistered user tries to access the door using their fingerprints, automatically his/her access is denied. The proposed door lock security system is can be used at homes, offices, banks, hospitals, and in other governmental and private sectors. Our proposed system was tested in real-time and has shown competitive results compared to other projects using RFI and password.

scholarly journals RANCANG BANGUN SPECTROSCOPY OPTIK PORTABEL BERBASIS ARDUINO MICRO

2019 ◽  
Vol 6 (2) ◽  
pp. 87
Author(s):  
I Gede Yogi Astawan ◽  
Yoga Divayana ◽  
Pratolo Rahardjo
Keyword(s):  
Liquid Crystal ◽  
Diffraction Grating ◽  
Liquid Crystal Display ◽  
Test Results ◽  
Servo Motor ◽  
Universal Serial Bus ◽  
Card Reader ◽  
Light Emitting ◽  
Sample Testing ◽  
Sd Card

This research is conducted to build portable spectroscopy optic with Android and desktop applications. Portable spectroscopy optic consists of Arduino Micro, Nextion Liquid Crystal Display (LCD), 2 pieces Light Emitting Diodes (LED), servo motor, diffraction grating (600 lines/mm), 2 pieces photodiodes, Bluetooth HC-05, and SD Card Reader Writer. Android and desktop applications realized by using Qt IDE. Spectroscopy testing is done using polymers with color red, green, and blue. The result of polymers sample testing shows that the spectrum with same wavelength range as the sample color will be passed, while other wavelengths will be absorbed. The device has been able to measure absorption of sample. On testing restore the test results to the SD card produces file with size about 2 kB. Device uses battery with capacity 3000 mAh and can be actively sustainable during 3 hours 31 minutes. Testing of communication Android and desktop applications with spectroscopy is done using bluetooth and Universal Serial Bus (USB) cable. The result of application testing are already able to send and receive data from spectroscopy.

scholarly journals Design, simulation and implementation of an Arduino microcontroller based automatic water level controller with I2C LCD display

2020 ◽  
Vol 9 (2) ◽  
pp. 77
Author(s):  
Akinwole OO
Keyword(s):  
Water Level ◽  
Small And Medium Enterprises ◽  
Liquid Crystal Display ◽  
Circuit Breaker ◽  
Control Level ◽  
The Arts ◽  
Display Function ◽  
Protection Devices ◽  
Arduino Microcontroller ◽  
Medium Enterprises

<span>The paper explains utilization of Arduino Microcontroller to automatically control level of water in a tank. From a well spelt out algorithms, flowchart was drawn, from which Codes were written and compiled on Arduino IDE. IF statements were copiously used. Proteus was used to simulate the design while the project was implemented on breadboard. Liquid Crystal Display function displays the level of water on the 16 × 2 LCD thus: Very Low, Low, High and Very High. An option of I2C LCD codes was written thus providing advantage of using only two analog input A4 and A5 pins instead of 4 to 8 pins in other configurations thereby allowing other pins dedicated for other tasks. The design recommends improvements in the area of sump control so that its low water level could disable pump thus preventing it from running dry. Protection devices like circuit breaker overload and phase failure relays are recommended in order to prolong the life of the Water pump. It is believed that the design will go in long way in educating power electronic engineers in the arts of design using Arduino; also, a mass production of the device will accentuate Small and Medium Enterprises SMEs in developing countries with its concomitant economic advantages.</span>

scholarly journals Design and Development of Temperature and Humidity Monitoring System

2019 ◽  
Author(s):  
R N Sonawane ◽  
A S Ghule ◽  
A P Bowlekar ◽  
A H Zakane
Keyword(s):  
Monitoring System ◽  
Printed Circuit Board ◽  
Liquid Crystal Display ◽  
Light Emitting Diode ◽  
Field Testing ◽  
Circuit Board ◽  
Light Emitting ◽  
Temperature And Humidity ◽  
Sd Card ◽  
Humidity Monitoring

The temperature and humidity monitoring system was developed using various components viz., Arduino Uno, DHT11 sensor, universal serial bus (USB) type B cable, adaptor, DC power jack, 9-V battery connector, 9-V DC battery, resistor, liquid-crystal display (LCD) screen, trimmer potentiometer, light-emitting diode (LED) bulbs, jumper wires, micro secure digital (SD) card module, printed circuit board (PCB), etc. The field testing of the developed temperature and humidity monitoring system was carried out at various locations of the college campus. It was observed that the system worked between the percent variation of 0–8.00% for temperature and 0–5.97% for humidity. The developed system showed the accuracy of ±2°C for temperature and ±4% for humidity. The total cost incurred for the development of temperature and humidity monitoring system along with all accessories was ₹1625.

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

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