Post on 05-Sep-2014
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
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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.
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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.
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
BLOCK DIAGRAM
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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.
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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.
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
CIRCUIT DIADGRAM
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
WORKING OF THE CIRCUIT
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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 -
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
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.
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
CONCLUSION
IIT DELHI Dept. of Electrical Engineering
EEP211 Design Project 2012Remote And Temperature Controlled Fan Regulator
REFERENCE
www.electronicsforyou.com
www.howstuffworks.com
www.wikipedia.org
Electronics for You Magazine
IIT DELHI Dept. of Electrical Engineering