Cell phone based dtmf
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Transcript of 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