DESIGN AND CONSTRUCTION OF SOLAR POWER AUTO STREET LIGHT

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DESIGN AND CONSTRUCTION OF SOLAR POWER AUTO STREET LIGHT

CHAPTER ONE

INTRODUCTION

1.1 Background of the study

The main consideration in the present field technologies are Automation, Power consumption and cost effectiveness. Providing street lighting is one of the most important and expensive responsibilities of a city.

Energy efficient technologies and design mechanism can reduce cost of the street lighting drastically. There are various numbers of control strategy and methods in controlling the street light system to ensure that it consumes less energy and is efficient in terms of money and usage. The main objective of this paper is to provide a better solution to minimize the electrical wastage in operating street lights, in this electronic era human restless. Manual control is prone to errors and leads to energy wastages and manually dimming during mid night is impracticable. A rapid advancement in embedded systems had paved path for the virtual mechanisms based on microcontrollers. This paper presents solar powered LED street light with auto intensity control which provides different intensities at different times of night using pulse width modulation technique. The system consists of light dependent resistor(LDR) which is also known as photo resistor made of cadmium sulfide is used for precise switching operation and an Atmega328P microcontroller which is programmed using Arduino programming language to act as a pulse width modulator. The program can be rewritable according to the requirements needed.

1.2 Statement of the problem

There may have been previous researches in this subject. This work gives further explanations and analysis in solar power led street light auto intensity

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