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temperature control device
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In both the mining and construction industries, blasting is the predominant method for fragmentation of consolidated mineral deposits and rocks. The public relation problems of users of explosive...
In both the mining and construction industries, blasting is the predominant method for fragmentation of consolidated mineral deposits and rocks. The public relation problems of users of explosive...
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remote sensing
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EEP211 Design Project 2012
Remote 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
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 t o 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 2012
IIT DELHI
Remote And Temperature Controlled Fan Regulator
Dept. of Electrical Engineering
EEP211 Design Project 2012
Remote 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.
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 2012
Remote 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
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.
IIT DELHI
Dept. of Electrical Engineering
EEP211 Design Project 2012
Remote And Temperature Controlled Fan Regulator
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 halfcycle 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).
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The triac used here is BT136. It is thyristor with a firing angle nearly 45 . 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 2012
Remote And Temperature Controlled Fan Regulator
CIRCUIT DIADGRAM
IIT DELHI
Dept. of Electrical Engineering
EEP211 Design Project 2012
Remote And Temperature Controlled Fan Regulator
WORKING OF THE CIRCUIT
IIT DELHI
Dept. of Electrical Engineering
EEP211 Design Project 2012
Remote 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 2012
Remote 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.
