Remote Controlled Fan Regulator

EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator

Indian Institute Of Technology

DELHI

EEP211

DESIGN PROJECT REPORT

ON

“REMOTE CONTROLLED FAN REGULATOR”

Submitted in accordance with the curriculum requirements for

fourth semester of the degree course in

BACHELOR OF TECHNOLOGY

In the branch of

ELECTRICAL ENGINEERING

of

IIT DELHI

YEAR 2012

Submitted by

INDRA BHUSHAN(2010EE50548)

UMANG GUPTA(2010EE50564)

VIVEK MANGAL(2010EE50556)

IIT DELHI Dept. of Electrical Engineering


CONTENTS

1. Abstract 3

2. Introduction 4

3. Objectives 6

4. Block Diagram

5. Block Diagram Description 7

6. Circuit Diagram 16

7. Working of the Circuit 17

8. Component List 19

13. Application 26

15. Conclusion 28

16. Reference 29



ABSTRACT

Remote and Temperature controlled Fan Regulator is one of the applications

of electronics to increase the facilities of life. Fan is one of the unavoidable

Electronic equipment in our day today life. It has become essential element

without which people can’t lead a smooth life. The presence of a fan in a

house or office is not now considered as a luxury on the other hand it is

included in the basic requirement. The uses of new electronic theories have

been put down by expertise to increase the facilities given by the existing

appliance. Here the facility of ordinary fan is increased by the making it

controlled by a remote and adding a temperature control for automatic speed

control.

In remote and temperature controlled fan regulator we can regulate the speed

of the fan by using a remote. Here the variation in the firing angle of triac is

used for regulating the speed.

Any button on the remote can be used for controlling speed of the fan. Using

this circuit, we can change the speed of the fan from our couch or bed. This

circuit is used for controlling the speed of the fan in 5 levels. This innovation

can be a success only if people are made aware about its advantages and how

user-friendly it is. The circuit can be used in automatic mode in which speed

of fan is controlled by the room temperature. This innovation finds its use

mainly to help old age people who don’t want to walk in order to control the

speed of fan. It also finds its use of somebody wants to change the speed

while sleeping.



INTRODUCTION

A circuit that allows total control over your equipments without having to

move around is a revolutionary concept. Total control over the speed of the

fan is a boon to many. This product brings to you this very concept.

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 cheap and affordable, a reliable and

easy to maintain system of remote control and durable system irrespective of

usage. It adds more comfort to everyday living by removing the

inconvenience of having to move around to operate a fan regulator.

The aim of this work is to design and construct a remote and temperature

control for a fan regulator. The remote control device sends an infra-red

beam, which is received by the infra-red sensor on the regulator and the

speed of the fan is increased. The temperature sensor on the regulator senses

the temperature and fed into the microcontroller and speed is increased

accordingly.

One of the primary objectives of an engineer is to endeavor to deliver the

best product or the most efficient services at the lowest cost to the end user.

The system was found to meet the expected results.



BLOCK DIAGRAM



BLOCK DIAGRAM

DESCRIPTION

Infrared Receiver

Module

Infrared receiver module is used for receiving the signals transmitted by the remote

control.

Here, TSOP 1738 is used as infrared receiver Module. It is capable of receiving signals

up to 38 KHz.

Transformer

A transformer is a device that transfers electrical energy from one circuit to another

through inductively coupled conductors — the transformer's coils or "windings".

Transformer is used here to step down the supply voltage to a level suitable for the low

voltage components.

The transformer used here is a 230/(12V-0-12V) step down transformer.



Regulator

Section

A voltage regulator is an electrical regulator designed to automatically maintain a

constant voltage level.

IC 7805 is used here. It is a 5V regulator. It regulates the rectified 12V to 5V. This 5V is

supplied to the whole circuit.

Opto Coupler

An Opto coupler is used to transmit either analog or digital information from one voltage

potential to another while maintaining isolation of potentials. It is used for low voltages.

MCT2E is the opto coupler used here. MCT2E is NPN silicon planar phototransistor

optically coupled to a gallium arsenide infrared emitting diode. It is used to interrupt the

microcontroller.

Opto Isolator



An Opto isolator is used to transmit either analog or digital information from one voltage

potential to another while maintaining isolation of the potentials. Its operating voltage is

higher than that of an Opto coupler.

Here, MOC3021 is used as opto isolator. It is used to drive the Triac BT136.

Triac BT 136

A TRIAC, or TRIode for Alternating Current is an electronic component approximately

equivalent to two silicon-controlled rectifiers (SCRs/thyristors) joined in inverse parallel

(paralleled but with the polarity reversed) and with their gates connected together. The

formal name for a TRIAC is bidirectional triode thyristor. This results in a bidirectional

electronic switch which can conduct current in either direction when it is triggered

(turned on) and thus doesn't have any polarity. It can be triggered by either a positive or a

negative voltage being applied to its gate electrode (with respect to A1, otherwise known

as MT1). Once triggered, the device continues to conduct until the current through it

drops below a certain threshold value, the holding current, such as at the end of a half-

cycle of alternating current (AC) mains power. In addition, applying a trigger pulse at a

controllable point in an AC cycle allows one to control the percentage of current that

flows through the TRIAC to the load (phase control).

The triac used here is BT136. It is thyristor with a firing angle nearly 45o. A snubber

circuit consisting of a resistor and capacitor is used to control the firing angle of Triac.

This firing angle determines the speed of the fan.



CIRCUIT DIADGRAM



WORKING OF THE CIRCUIT



COMPONENTS LIST

1. IR Receiver Module - TSOP 1738

2. IC NE555

3. Opto Coupler - IC MCT2E

4. Opto Isolator - IC MOC 3021

5. Voltage Regulator - IC 7805

6. Transformer – 230/(12V -0-12V)

7. Light Emitting Diode

8. IR Light Emitting Diode

9. Diodes

10.Transistor - BC546

11.Triac - BT136

12. Resistors –

13.Capacitors -



APPLICATION

Remote controlled Fan Regulator is used to control the speed of fan

from our bed or couch.

The same circuit finds its use to control the Intensity of light at various

levels.

This circuit also finds it use for switching ON and OFF any electronic

circuit.



CONCLUSION



REFERENCE

www.electronicsforyou.com

www.howstuffworks.com

www.wikipedia.org

Electronics for You Magazine


Remote Controlled Fan Regulator

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