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49 articles for “relays”
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Development of a Cost-Effective Automatic Power Transfer Switch for Backup Energy Systems
Abstract: This study offers a practical solution to the frequent power outages in places like Nigeria, where having backup power sources, such as inverters, is crucial. To make switching between the main power supply and backup power easier, the authors created a simple but effective transfer switch. The design uses important components like an electromechanical relay, a contactor, a voltage monitoring relay, and delay timer relays to ensure smooth switching between …
Published in Journal of Electronic Design Technology · Vol. 16, Issue 1, 2025 · pp. 7–12 Read article
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Automatic Power Switching Mains for Various Sources
Abstract: This project's major objective is to autonomously choose from four possible power sources—mains, generator, inverter, and solar—to guarantee a load's continuous power delivery. This is crucial due to the rising demand for electricity and the frequent power disruptions affecting industries, hospitals, and households. Establishing an alternative power source is imperative to address this issue. In this project, four switches are utilized to simulate the failure of individual power sources. Pressing …
Published in International Journal of Electrical Machine Analysis and Design · Vol. 1, Issue 2, 2023 · pp. 24–30 Read article
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Smart SwitchBoard With Auto Safety Control
Abstract: The Intelligent Smart Switch Board, with Automatic Safety Control, is designed as an IoT-based intelligent power management system to enhance electrical safety by providing the user with real-time monitoring of electrical energy consumption and the ability to remotely control electrical loads in their home or small industrial facility. The Smart Switch Board is built around an ESP32 Microcontroller and uses a PZEM-004T Energy Meter Module to accurately measure voltage, current, …
Published in Journal of Microcontroller Engineering and Applications · Vol. 13, Issue 2, 2026 Read article
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DTMF Based Home Automation Without Using Microcontroller
Abstract: Currently mobile has become our lifestyle, because of low price of housing automation and through DTMF. DTMF (dual tone multiple frequency) primarily based system contains 2 mobile phones, DTMF Decoder and UNL2003 main a part of the project. One mobile is employed as remote which can settled at way distance from home through that directions area unit felt occupation and another mobile is found reception act as a receiver. The …
Published in Journal of Microcontroller Engineering and Applications Read article
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The Future of Domestic Convenience: An In-depth Review of IoT-enabled Smart Home Technologies
Abstract: This paper explores a design for a smartphone-controlled smart home automation circuit built around the ESP8266 microcontroller. The ESP8266, known for its Wi-Fi connectivity, is the heart of the circuit, enabling communication with a cloud platform and receiving user commands from a mobile application. Based on user commands received through the app, the ESP8266 triggers relays to control appliances like lights and fans. This design offers a cost-effective and customizable …
Published in Trends in Electrical Engineering · Vol. 14, Issue 2, 2024 · pp. 39–50 Read article
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Design and Implementation of a Smart Irrigation System for Efficient Water Management in Agriculture
Abstract: Water is one of the most important resources in farming, and using it wisely has become more important than ever. Traditional irrigation methods often lead to a lot of water being wasted, especially when watering is done without checking if the soil actually needs it. This project focuses on building a Smart Irrigation System that uses basic electronic components like soil moisture sensor, DC Motor, IC7805, Relay Module and a …
Published in Journal of Computer Technology & Applications · Vol. 16, Issue 3, 2025 · pp. 13–22 Read article
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Hydroponic Farming Monitoring System - Automated System to Monitor and Control Nutrient and pH Levels
Abstract: With growing urbanization and limited agricultural land, sustainable agriculture is becoming a necessity. This project introduces a smart, space-saving, and automated hydroponic farming system based on IoT (Internet of Things) technology. The proposed system employs an ESP8266 NodeMCU microcontroller with sensors like a pH sensor and an ultrasonic sensor to track critical plant growth parameters like nutrient solution pH and water level. A relay module controls a water pump for …
Published in Journal of Microcontroller Engineering and Applications · Vol. 12, Issue 3, 2025 · pp. 11–16 Read article
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Multi-Control Smart Office Automation System: Arduino IoT Cloud App, Web Browser, IR Remote and Manual Switches
Abstract: This paper presents the design and development of a smart office automation system that can be controlled in multiple ways: using the Arduino IoT Cloud or a web browser, an IR remote and on/off switches. The system allows users to control office devices such as lights, fans, and other electric appliances. . In this system six relay module are used to operate the six electric appliances, from those six appliances …
Published in Journal of Microcontroller Engineering and Applications · Vol. 12, Issue 3, 2025 · pp. 1–10 Read article
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GSM Based OTP Security Locker Using Arduino
Abstract: This work presents a microcontroller-driven secure locker system that leverages GSM-based communication for dynamic user authentication. Unlike conventional locking mechanisms that depend on static credentials or physical keys, the proposed system utilizes a time-sensitive one-time password (OTP) transmitted to a pre- authorized mobile number. The authentication workflow is managed using an Arduino-based embedded platform integrated with a SIM A7670C GSM module. The system coordinates OTP generation, transmission, and validation in …
Published in Journal of Microcontroller Engineering and Applications · Vol. 13, Issue 2, 2026 Read article
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Smart Card Based Lineman Safety
Abstract: As maintenance workers and electrical substations are being repaired, there are more electrical mishaps involving linemen today. Contact with overheated wires is the most frequent reason for electric shock and electrocution in the workplace, but there are other factors as well. When transporting equipment like poles and ladders, this happens when people underestimate the height of the ground and overhead wires. Not separating electrical supply is another common cause of …
Published in International Journal of Electrical and Communication Engineering Technology · Vol. 1, Issue 1, 2023 · pp. 1–7 Read article
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Smart Vehicle Tracking with Anti-Theft and Accident Detection System
Abstract: This paper introduces a comprehensive Smart Vehicle Tracking System equipped with advanced functionalities such as live vehicle tracking, real-time fuel monitoring, anti-theft measures, and accident detection systems. Transportation systems have been completely transformed by the incorporation of cutting-edge technologies into automobiles, which have increased efficiency, safety, and security. Due to their ability to reduce the risks associated with auto theft and accidents, smart vehicle tracking systems with anti-theft and accident …
Published in Journal of Automobile Engineering and Applications · Vol. 11, Issue 1, 2024 · pp. 1–8 Read article
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Driver Observation and Automatic Braking System Using Arduino
Abstract: Autonomous braking systems and driver observation are two important developments in car safety technology that are intended to reduce accidents brought on by tired drivers. An eye blink sensor has been incorporated in the device. The sensors recognize an eye blink automatically once the driver starts the engine. This gadget displays the sensor's output so that it may be compared to the Arduino. The eye blink sensor gets a signal …
Published in Journal of Microcontroller Engineering and Applications · Vol. 11, Issue 2, 2024 · pp. 28–33 Read article
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Innovative Water Distribution Systems: Raspberry Pi Based Adaptive Water Vending Solutions
Abstract: Technology has advanced to the point that many complex equipment and gadgets are now indispensable tools for humankind. Among these, automated vending machines have become a mainstay, simplified a variety of tasks and greatly increased productivity while reduced the need for human involvement. These devices, which have numerous inputs and outputs, can dispense snacks, cold beverages, coffee, tea, water, and more to meet the needs of a diverse clientele. The …
Published in Journal of Microcontroller Engineering and Applications · Vol. 11, Issue 3, 2024 · pp. 33–42 Read article
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Smart Home Automation Systems: AI Approaches for Monitoring and Reducing Power Consumption
Abstract: This study comprehends a Bluetooth controlled home automation system that users can control remotely through a specific Android platform. Technology advancements lead to homes that acquire greater intelligence. Remote-controlled switches continue replacing standard wall switches because they operate as part of system-wide central control gear in contemporary homes. Today's users must operate wall-mounted manual switches in every room of the house. Members of both these populations face an additional obstacle …
Published in Journal of Power Electronics and Power Systems · Vol. 15, Issue 3, 2025 · pp. 10–17 Read article
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Room Light Controller with Bidirectional Visitor Counter
Abstract: With the speed at which technology is developing today, automation is essential for increasing productivity, preserving energy, and enhancing consumer ease. The concept and implementation of an automatic room light controller with a bidirectional visitor counter are presented in this study. By detecting the presence and quantity of people in a room, the device is designed to automatically adjust the lighting, cutting down on wasteful electricity use. Pairs of Infrared …
Published in Journal of Microcontroller Engineering and Applications · Vol. 12, Issue 3, 2025 · pp. 33–37 Read article
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Advanced Energy Metering and Automated Control System
Abstract: In this paper need for energy efficiency especially combining smart metering with control of load and prepaid billing becomes insistent. An ESP32-based Advanced Energy Metering and Automated Load Control System, is presented in this paper taking advantage of an IoT-capable smart meters, real-time data analytics, motion detector-based automation scheduling, Real-time clock (RTC) module-enabled scheduling, and GSM based prepaid billing notifications. The central controller, responsible for real-time energy monitoring, automated load …
Published in Journal of Control & Instrumentation · Vol. 17, Issue 2, 2026 Read article
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Solar Panel Maintenance and Prevention System
Abstract: Solar energy has emerged as a sustainable and efficient alternative to conventional energy sources. However, maintaining solar panels is crucial to ensure optimal performance and longevity. Accumulation of dust, dirt, and environmental debris can significantly reduce energy efficiency, leading to increased operational costs and potential system failures. To overcome this issue, we suggest an IoT- based Solar Panel Maintenance and Prevention System that facilitates automated cleaning and preventive maintenance via …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 16, Issue 2, 2025 · pp. 29–34 Read article
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RFID Based Smart Trolley Billing System Using IoT
Abstract: Customers experience better retail interactions while operations become more efficient in the modernizing retail industry. Shopping through traditional methods requires lengthy manual scanning for products and billing operations leading retailers to require automation solutions for streamlining these processes. This system consists of RFID detection alongside 8051 microcontroller processing and load cells monitoring and uses IoT communications and relay controls to power an intelligent automated shopping cart. Real-time data tracking functions …
Published in Journal of Semiconductor Devices and Circuits · Vol. 12, Issue 3, 2025 · pp. 1–8 Read article
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Design and Implementation of an Arduino-Based Wireless Power Consumption Monitoring and Control System
Abstract: The increasing demand for electricity and the inefficiencies associated with traditional metering systems necessitate the development of advanced solutions for monitoring and controlling power consumption. This study presents the design and implementation of an Arduino-based wireless power consumption monitoring and control system aimed at providing real-time feedback and efficient energy management. The system incorporates the Arduino Uno R3 microcontroller, ACS712 current sensor, relay module, and Ethernet shield to enable accurate …
Published in Trends in Electrical Engineering · Vol. 16, Issue 1, 2025 · pp. 19–31 Read article
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Design of Maritime Empennage Unmanned Aerial Vehicle (UAV): A Comprehensive Study
Abstract: This project presents a comprehensive study on the design and development of a maritime empennage unmanned aerial vehicle (UAV) tailored for operations in coastal and naval environments. The primary objective is to engineer an efficient, stable, and mission-adaptable UAV with an optimized empennage configuration that enhances aerodynamic performance and control in maritime conditions. The study involves a systematic design process encompassing mission requirement analysis, conceptual and preliminary design, aerodynamic modeling, …
Published in Journal of Aerospace Engineering & Technology · Vol. 16, Issue 1, 2026 Read article