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SUBMITTED BY

EDGEFX TEAM

A MICROCONTROLLER BASED

CONTROL OF CURRENT SOURCE

CONVERTER FED REVERSINGINDUCTION MOTOR DRIVE BY REMOTE

CONTROL. IDEAL FOR EXHAUST FANS

TO THROW AIR OUT AND BRING AIR IN

BY REMOTE AS DESIRED

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ABSTRACT

The microcontroller receives the Infrared Signal from the TV

remote, the code of which is identified by the IR receiver

depending on which it switches ON/OFF the appropriate relay

or TRIAC for a split phase induction motor to achieve desired

direction.

The Range of the system is up to 10 meters. The project can

also be used to switch ON/OFF electrical devices of maximum

load current of 5A by minor alteration.

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BLOCK DIAGRAM

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HARD WARE EQUIPMENTS

POWER SUPPLY BLOCK

MICROCONTROLLER (AT89S52/AT89C51)

LED

RELAY

ULN2003

TSOP1738 RECEIVER

1N4007

RESISTOR S & CAPACITORS

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EMBEDDED SYSTEMS

Definition for :-EMBEDDED SYSTEMS

A combination of hardware and software which together

form a component of a larger machine.

An example of an embedded system is a microprocessor that

controls an automobile engine.

An embedded system is designed to run on its own without

human intervention, and may be required to respond to

events in real time.

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EMBEDDED SYSTEMS

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MICRO CONTROLLER

Compatible with MCS-51 Products

8K Bytes of In-System Programmable (ISP) Flash

Memory

4.0V to 5.5V Operating Range

Crystal Frequency 11.0592MHZ

Three-level Program Memory Lock

256 x 8-bit Internal RAM

32 Programmable I/O Lines

Three 16-bit Timer/Counters

Eight Interrupt Sources

Full Duplex UART Serial Channel

Watchdog Timer

AT89S52

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PIN DIAGRAM OF AT89S52

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LED

LEDs are semiconductor devices are made out of silicon

When current passes through the LED, it emits photons as a

byproduct. Normal light bulbs produce light by heating a metal

filament until its white hot

LEDs present many advantages over traditional light sources

including lower energy consumption, longer lifetime,

improved robustness, smaller size and faster switching

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TSOP 1738 RECEIVER PIN DIAGRAM

Its a standard IR remote control

receiver

supporting all major transmission codes

Pin1Connected to Ground

Pin2Connected to Vcc

Pin3Output Pin

In Between 1stPin and 2ndPin we have

to connect one Capacitor

TSOP 1738 Receives 14bit of data

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TSOP 1738 FEATURES

Photo detector and preamplifier in one package

Internal filter for PCM frequency

TTL and CMOS compatibility

Output active low

Low power consumption

High immunity against ambient light

Continuous data transmission possible (up to 2400 bps)

Suitable burst length .10 cycles/burst

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RELAY

IT IS A ELECTRO MAGNETIC SWITCH

USED TO CONTROL THE ELECTRICAL DEVICES

COPPER CORE MAGNETIC FLUX PLAYS MAIN ROLE HERE

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Relay Driver ULN2003

ULN is Relay driver application

The ULN2003 is a monolithic high voltage and high current

Darlington transistor arrays.

It consists of seven NPN Darlington pairs that features high-voltage

outputs with common-cathode clamp diode for switching inductive

loads.

The collector-current rating of a single Darlington pair is 500mA.

The Darlington pairs may be paralleled for higher current capability.

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Contd

The ULN functions

as an inverter.

If the logic at input

1B is high then the

output at its

corresponding pin

1C will be low.

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SOFTWARE REQUIREMENTS

PROGRAMMING LANGUAGES

Embedded C , ALP (Assembly Language)

COMPILERS:

Keil 2.0/3.0uv

DUMPING SOFT WARE:

Using Micro controller flash Software we are dumping

our HEX Code into Micro Controller

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KEIL COMPILER WINDOW

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BIBILOGRAPHY

The 8051 Microcontroller and Embedded systems by Muhammad Ali

Mazidi and Janice Gillispie Mazidi , Pearson Education.

ATMEL 89S52 Data Sheets.

www.atmel.com

www.beyondlogic.org

www.wikipedia.org

www.howstuffworks.com

www.alldatasheets.com

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THANK Q