CHAPTER ONE
1.0. INTRODUCTION
1.1. GENERAL DESCRIPTION OF THE PROJECT
Industrial electronics has turned the whole world into a global village. One of the most indispensable aspects of these phenomena is automation, which forms the nucleus of the present day electronics technology. Considering the milestone, it was desired to make the choice of the project research on the design and implementation of an automatic fence light controller.
This electronics system is realized with a cadmium – sulphide photo-conductive cell which serves as the light sensor. The output of the light dependent resistor is fed into a delay circuit configured using an n RC- network. The output of the RC-network bases a Darlington pair transistor which drives an electromagnetic are interfaced. The overall circuit is powered by a 12 v d.c. unregulated power supply unit that properly filtered.
1.2. STATEMENT OF THE PROBLEM
This project work signifies a lot in industrial automation, telecom, computer electronics and ICT at large. It seeks to eliminate the stress, time and inconvenience associated with manual switching of security lights. It has a wide range of real-life applications basically in automation and can be used in surveillance system if properly modified. It can be used to illuminate farm settlement automate irrigation pumps in the farm usually in the night to scare away thieves and rodents to increase yield.
1.3. OBJECTIVES OF THE PROJECT
1)To study the existing street light control systems.
2)To design energy efficient street light control system.
3)To develop the hardware of control unit.
4)To test and validate the designed system.
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DESIGNING AND CONSTRUCTING OF AN AUTOMATED LIGHT SYSTEM USING PHOTO-SENSITIVE SWITCH
