Cell phone based dtmf

CELL PHONE BASED DTMF CONTROLLED GARAGE

DOOR OPENING SYSTEM.

Prepared By:Fatima Dmaidi.Majd Darweesh.Noor Salman.

SUPERVISOR:Dr.Kamel Subhi.

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

The main objective of this project is to unlock a garage door by a mobile phone using a unique number entered through the keypad of the phone after entering the password given to the user .

This project is based on the concept of DTMF (dual tone multi - frequency).

Introduction :

Introduction.Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

Our system consists of DTMF decoder, Arduino, Gate driver, H-bridge, DC motor (PM motor) to achieve our goal.

Overview:

Introduction. Overview.Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

Design :

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

DTMF is a common communication term for touch tone phones.

DTMF :

16 button keypad.

The frequencies generated on pressing different keys are shown in the table:

DTMF :

DTMF frequency

1209Hz

1336Hz

1447Hz

697 Hz 1 2 3770 Hz 4 5 6852 Hz 7 8 9941 Hz * 0 #

DTMF Decoder: This DTMF decoder circuit identifies the dial tone

from the telephone line and decodes the key pressed on the remote telephone.

DTMF decoder:

DTMF decoder connected to the cellular phone:

Output of DTMF decoder:

Settings of the phone connected with the system:

1. A SIM card must be inserted in the phone.2. Automatic answering mode must be selected.

Introduction. Overview. Design. Flow chart of the project. DTMF.Arduino. H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

We used Arduino Uno in our project .

The Arduino Uno is a microcontroller board based on the ATmega328. It has 14 digital input/output pins (of which 6 can be used as PWM outputs).

Arduino:

Output of the Arduino :

1

2

3

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino.H-Bridge. DC Motor (PM Motor) . Results. Future work.

OUTLINES :

H-bridge and gate drive:

Pulses from Arduino

Output of ir2110

Vavg=(0.75*Vdc-0.25*Vdc )/T

Vavg

Speed

distance

0

Vavg=(0.75*Vdc-0.25*Vdc )/T

vvv

Vavg=(0.25*Vdc-0.*Vdc )/T

Vavg

Speed

Distance

0

VEDIO

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge.DC motor (PM motor). Results. Future work.

OUTLINES :

DC Motor (PM motor ) :

Introduction. Overview. Design. Flow chart of the project. DTMF. Arduino. H-Bridge. DC motor (PM motor).Results. Future work.

OUTLINES :

Door design:

Simulation and real implementation:

Opening the door :

Speed variation curve

1

2

Distance curve in simulation:

Closing the door

Speed variation curve

1 1

2

ا

Distance variation, closing:

Motor connected to the door:.

VEDIO

Conclusion

Future work