dish position control using geared motor

DRK College of Engineering & Technology

DISH POSITIONING CONTROL BY GEARED MOTOR

Project- Seminar

Date: 19-APR-2012

Department of Electronics & Communication Engineering

By

K.LAXMI KANTH (08U51A0487)

G.NITHIN (08U51A0479)

K.N.DIVYA SREE (08U51A0486)

N.MANOJ (07U51A0460)



Project- Seminar

Date: 19-APR-2012


INTRODUCTION

Aim : To move the dish in the desired direction to receive the maximum signal.

Purpose : To reduce the complexity in adjusting the position of dish.



Project- Seminar

Date: 19-APR-2012


BLOCK DIAGRAM



Project- Seminar

Date: 19-APR-2012


HARDWARE COMPONENTS:

POWER SUPPLY

AT89S52 MCU

IR TRANSMITTER

TSOP (RECEIVER)

GEARED MOTOR

L293D MOTOR DRIVER IC



Project- Seminar

Date: 19-APR-2012


POWER SUPPLY230 V AC 50 Hz

5V DC

5v RegulatorBridge rectifier



Project- Seminar

Date: 19-APR-2012


IR TRANSMITTER(LED):

•Peak Wavelength 940 nm

•Spectral Bandwidth 45 nm

•Max Current: 100 mA

•Forward Voltage 1.4V-1.5V

•Power Dissipation 150 mW

•Breakdown Voltage 5V



Project- Seminar

Date: 19-APR-2012


TSOP 1738 PIN DIAGRAM



Project- Seminar

Date: 19-APR-2012


Photo detector and preamplifier in one package

TTL and CMOS compatibility

Output active low

Low power consumption.

TSOP 1738 FEATURES :



Project- Seminar

Date: 19-APR-2012


TSOP SPECIFICATIONS:

•Supply Voltage: –0.3 to 6.0 V.

•Supply Current: 5 mA.

•Output Voltage: –0.3 to 6.0 V.

•Output Current: 5 mA.

•Operating Temperature Range: –25 to +85°C



Project- Seminar

Date: 19-APR-2012


RC-5 Protocol:

2 start bits,1 toggle bit,5 bit address and 6 bit command

Carrier frequency of 36kHz

Constant bit time of 1.778ms (64 cycles of 36 kHz)

Manufacturer Philips



Project- Seminar

Date: 19-APR-2012


Typical pulse train of RC-5 message



Project- Seminar

Date: 19-APR-2012


GEARED MOTOR:

Principle

Working

Applications



Project- Seminar

Date: 19-APR-2012


L293D MOTOR DRIVER IC:

Wide supply-voltage range: 4.5V to 36V

Separate input logic supply

Internal ESD protection

Output current 600 mA

It can drive two motors in both clockwise and anti-clockwise

direction



Project- Seminar

Date: 19-APR-2012


PIN DIAGRAM OF L293D



Project- Seminar

Date: 19-APR-2012


INTERFACING OF MOTOR WITH L293D :



Project- Seminar

Date: 19-APR-2012


MICROCONTROLLER(AT89S52)

• 4.0V to 5.5V Operating Range

• Fully Static Operation: 0 Hz to 33 MHz

• 256 x 8-bit Internal RAM

• 32 Programmable I/O Lines

• Three 16-bit Timer/Counters



Project- Seminar

Date: 19-APR-2012


Pin Configurations of AT89S52



Project- Seminar

Date: 19-APR-2012


SCHEMATIC DIAGRAM:



Project- Seminar

Date: 19-APR-2012


SOFTWARE:

•ASSEMBLY LANGUAGE

•KEIL MICRO VISION



Project- Seminar

Date: 19-APR-2012


Applications:

The position of dish is used in DTH were the signals are received directly from satellite.

The dish position control system is used on the top of cars where the media access signals.

The position of antenna is used in GPS tracking system.



Project- Seminar

Date: 19-APR-2012


Future scope: Positioning of dish can be implemented using RF means where the dish position can be adjusted very efficiently.

Using RF transmission the dish position can be controlled from a distance of 200meters.



Project- Seminar

Date: 19-APR-2012


Conclusion:

The position of the dish is controlled by using the IR means i.e., using remote control the position of dish is adjusted with the help of geared motors to get the maximum reception of signal.



Project- Seminar

Date: 19-APR-2012


THANK YOU

dish position control using geared motor

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