ABSRACT

This paper work contains details of the design and construction of a remote control fan regulator. The system simply consists of an infrared (IR) remote transmitter with a coverage range of about 7 meters. The infrared signal from the remote transmitter is picked by an IR sensor which then feeds and signal amplifier which amplifiers the signal to a level capable of activating a counter. The output of the counter is fed through a transistor switch to activate the fan coil via electro mechanical relays which connect the appropriate winding to the fan motor.

TABLE OF CONTENTS

Title page

Declaration

Approval page

Dedication

Acknowledgement

Abstract

List of Figures

List of Abbreviations

CHAPTER ONE

1.0     Introduction

1.2     Statement of the Problem

1.3     Aims

1.4     Significance of study

1.5     Methodology

CHAPTER TWO:        LITERATURE REVIEW

2.0     History of fan

2.1     Types of Remote Control

2.2     Component Review

2.2.1 Diode

2.2.2 Capacitor:

2.2.3 L.E.D:

2.2.4 Voltage Regulator

2.2.5 Relays

2.2.6 Attracted armature type relay:

2.2.7 The 555 Timer 1C

2.2.8 Resistor

CHAPTER THREE

3.0     Design and Construction

3.1     Working Principle

3.2     Circuit Diagram

3.3     Circuit Design Analysis

CHAPTER FOUR

4.0     Testing       

4.1     Result

CHAPTER FIVE

5.0     Discussion, conclusion and recommendation

5.1     Discussion

5.2     Enclosure Construction    

5.3     Assembling

5.4     Conclusion

5.5     Recommendation

Reference

LIST OF FIGURES

Fig: 2.1: Reference trajectory

Fig 2.2:  Error signal

Fig 2.3: Mechanical manipulator

Fig 2.4: Pulse-coded signal

Fig 2.5: Space-coded signal

Fig 2.6: Shift-coded signal

Fig 2.7: The figure above show how a remote control sends command to a television set

Fig 2.8: Diode

Fig 2.9: Voltage regulatory

Fig. 10: Power transistor

Fig 2.11: Relay internals

Fig. 2.12: Timing Interval Circuit.

Fig. 2.13: Resistor image

Fig 2.14: Components of a typical linear power supply

LIST OF ABBREVIATIONS

A.C           Alternative Current

D.C          Direct Current

VAC        Alternative current voltage

VRM        Actual supply voltage

VDC         Direct current voltage

Ω               Ohms

µƑ              Micro farad

LEDS        Light emitting diodes

VF            The maximum forward voltage drop

VCC          The supply voltage

RLED       The LED current limiting resistor

IC              Collector current

IB               Base current

VB              Base voltage

CHAPTER ONE

 1.0    INTRODUCTION

The first remote control, called “lazy bones” was developed in 1950 by zenith Electronics Corporation (then known as zenith Radio Corporation). The device was developed quickly, and it was called “zenith space command”, the remote went into production in the fall of 1956, becoming the first practical wireless remote control device (http://en.wikipedia .org/wiki/ Remote control).

Remote control facilitates the operation of fan regulators around the home or office from a distance. It provides a system that is simple to understand and also to operate, a system that would be reliable and easy to maintain and durable irrespective of its usage. It adds more comfort to everyday living by removing the inconvenience of having to move around to operate a fan regulator.

 Today, remote control is a standard on electronic products, including vicars, cable and satellite boxes, digital video disc players and home audio players. In the year 2000, more than 99 percent of all TV set and 100 percent of all VCR and DVD players sold are equipped with remote controls.

The average individual these days probably picks up a remote control at least once or twice a day.

Basically, a remote control works in the following manner, a button is pressed. This completes a specific connection which produces a code line signal specific to that button. The transistor amplifies the signal and sends it to the led which translates the signal into infrared light. The sensor on the appliance detects the infrared light and reacts appropriately.   

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