interacting college mobile system
TRANSCRIPT
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INTERACTING
COLLEGE
MOBILE SYSTEM
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OBJECTIVE
To develop a interacting college
mobile system.
Make new students easy to identify
their class room.
Any person entering the college
without having any knowledge
regarding branches, office room find
this project as the medium of
interaction.
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INTRODUCTION
Interaction is based on GSM signals
of a mobile phone.
DTMF signaling technique is utilised.
A large LCD display is used for the
system.
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DTMF SIGNALS
• Popular signaling method between
telephones and switching centers
• Also used for signaling between the
Telephone network and computer
networks
• Transmitted over a telephone line
• Uses speech frequency signals
• Superposition of 2 sine waves with
different frequencies
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THE DTMF KEYPAD
1209 Hz 1336 Hz 1477 Hz
697 Hz 1 2 3
770 Hz 4 5 6
852 Hz 7 8 9
941 Hz * 0 #
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DTMF GENERATION
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Pin Diagram of AT89S52 Micro Controller
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MT8870 is used as DTMF decoder.
LED’S are used for signaling
purpose.
programming to the
microcontroller is done in
Embedded C language.
Keil C software used for
interfacing the microcontroller.
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WORKING MODEL RESULTS
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Main
Displ
ay
JUST DIAL 9030000123 to
INTERACT
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When
the
option
auditori
um is
selecte
d
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When the option LIBRARY is selected.
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Future Scope
Transport systems like railways.
Multi-specialty hospitals.
Multiplex theaters.
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CONCLUSION
A well interacting college mobile system have been developed.
Reception counters at college campus can be reduced.
One or more people can also interact at the same time.
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