International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 11 Issue: 04 | Apr 2024
p-ISSN: 2395-0072
www.irjet.net
AUTOMATIC NIGHT LAMP USING LDR Jayanti Dang1, Sujal panda2, Rudra prasad Shadangi2 , Satasree Barik2, Alok Parida2 1Aistant Professor ,ECE department, Gunupur,
Odisha, INDIA
2UG Scholar, ECE department, GIETU, GUNUPUR ,Odisha, India
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Abstract - The Automatic Night Lamp using a Light
relay or transistor, and an LED or light source. When the LDR detects low light, it triggers the micro-controller to turn on the LED or light source. This automation ensures that spaces are adequately lit when necessary and turned off when sufficient natural or artificial light is present. The fundamental components of this system include an LDR, a micro-controller (such as an Arduino or Raspberry Pi), a relay or transistor, and an LED or light source. When the LDR detects low light, it triggers the microcontroller to turn on the LED or light source. This automation ensures that spaces are adequately lit when necessary and turned off when sufficient natural or artificial light is present [3]. The Automatic Night Lamp using an LDR not only promotes energy efficiency but also enhances convenience and safety. It finds applications in various settings, from home environments where it can serve as a bedside night lamp, to outdoor areas like gardens and pathways. Moreover, the project serves as an educational opportunity for students and electronics enthusiasts to understand the practical implementation of sensor micro-controllers, and automation [4]. In the following sections, we will delve into the detailed components, circuit diagram, and programming aspects of this project. By the end of this endeavor, you will have a working understanding of how to construct your own Automatic Night Lamp using an LDR, contributing to a more sustainable and user-friendly word.
Dependent Resistor (LDR) is an intelligent lighting system designed for energy-efficient and automated illumination. This project employs an LDR as a sensor to detect changes in ambient light levels. When the surroundings transition into darkness, the LDR's resistance increases, activating a transistor that allows current flow to power the LED circuit. This seamless process ensures that the night lamp turns on automatically in low-light conditions, eliminating the need for manual operation. The project's versatility is enhanced by the inclusion of a potentiometer, enabling users to finetune sensitivity according to their specific lighting preferences. The implementation of this DIY solution is costeffective and user-friendly, making it accessible to a wide range of enthusiasts. By combining electronics and sensor technology, the Automatic Night Lamp with LDR not only adds a layer of convenience to daily life but also contributes to energy conservation. This intelligent lighting system presents a sustainable and practical approach to address the need for adaptive lighting in diverse environments, showcasing the potential of simple yet effective electronic solutions for everyday challenges. Key Words: LDR, Lamp, Resistor, Alternator, Pot, Transistor(BC547), LM358N, Relay, Diode(1N4148)
INTRODUCTION
LITERATURE REVIEW:
In our fast-paced and energy-conscious world, the need for efficient and energy-saving solutions is paramount. One such solution is the development of an "Automatic Night Lamp" using a Light Dependent Resistor (LDR). This project showcases a simple yet effective method to illuminate spaces during the night or in low-light conditions without the need for manual intervention [1]. An LDR, also known as a photoresistor, is a sensor resistance based on the intensity of incident light. As darkness falls and ambient light levels decrease, the resistance of the LDR increases. This property makes LDRs a perfect candidate for designing an automatic night lamp. The primary objective of this project is to create a lighting system that senses the environmental light conditions and activates itself when it detects a reduction in light, such as during the evening or in dimly lit rooms. Conversely, the lamp should deactivate when sufficient daylight or artificial lighting is available to save energy [2]. The fundamental components of this system include an LDR, a micro-controller (such as an Arduino or Raspberry Pi), a
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The investigation by Andras Kovacs and Roland Batai (2016) aimed to create a sub grid for public lighting that generated :positive energy balance using solar power. The study focused on the central controller, which facilitated smart city services through its web-based interface while ensuring adaptability of the system. Of particular interest was optimizing energy management via buying and selling electricity from/to the grid based on variable time-of-use tariffs [5]. Y M Jagadeesh et al.(2016) discussed how street lights contribute significantly to overall electric consumption in modern societies due to nocturnal operation times. The paper proposed a sensor-based solution that enables realtime pattern adjustments to reflect varying traffic conditions and naturalistic scenarios such as full moon phases. This approach reduces CO2 emissions with an embedded lowcost IR sensor system consisting of PIR controllers, a storage device, and an inexpensive microcontroller [6].
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