1. INTELLIGENT AUTOMATION USING
GSM & DTMF VIA
ANDROID
APPLICATION
Presented By-
ROHAN DUA 10808090 IT B
RAHUL SHARMA 10808099 IT B
24 April 2012 SMART HOMES 1
2. PROBLEM STATEMENT
• To build a mobile application to control all the
electric/electronic devices connected to
switches to provide more flexibility of doing
things and above that securing homes or
workplaces.
24 April 2012 SMART HOMES 2
3. INTRODUCTION
• Smart homes/Domotics represents a
technological science which studies all the
things employed in the houses or the
buildings facilitating the work of people and
increasing the comfort in their environment.
24 April 2012 SMART HOMES 3
4. MULTI-DISPLINARY
It involves-
• IT- the mobile application
• EEE-the work on switches and relay, the work
on microcontroller
• EC-the coding and decoding through GSM
module
24 April 2012 SMART HOMES 4
5. BASIC LAYOUT
OFFLINE
RELAY BOARD
GSM MODULE
MICRO-CONTROLLER Mobile Application
DTMF DECODER
ONLINE
24 April 2012 SMART HOMES 5
6. MICROCONTROLLER
• open-source single-board microcontroller
• User friendly
• Wide Applications
• Vast community of users
• Easy assistance
24 April 2012 SMART HOMES 6
7. DTMF TECHNOLOGY
Dual-tone multi-frequency signalling
(DTMF) is used for telecommunication
signalling over analog telephone lines in
the voice-frequency band between
telephone handsets and other
communications devices and the switching
centre.
1209 Hz 1336 Hz 1477 Hz 1633 Hz
697 Hz 1 2 3 A
770 Hz 4 5 6 B
852 Hz 7 8 9 C
941 Hz * 0 # D
24 April 2012 SMART HOMES 7
8. GSM MODULE
• Use it to send SMS
• make and receive calls
• Provides serial interface
• Can be controlled through
standard AT commands
24 April 2012 SMART HOMES 8
12. ADVANTAGES of INTELLIGENT
AUTOMATION
• Convenience is one of the biggest reasons that people
build and purchase smart homes.
• Smart homes include advanced security systems with
cameras, motion sensors and a link to the local police
station or a private security company.
• For elderly or disabled residents, a smart home may
feature accessibility technologies.
• Smart homes offer enhanced energy-efficiency.
• cut personnel costs.
24 April 2012 SMART HOMES 12
13. DEVELOPMENTS
• ANDROID OPERATING SYSTEM IS STUDIED
• ANDROID APPLICATION PROTYPING IS DONE
• SMS MODULE IS RUNNING FINE
• ARDUINO DEVELOPMENT BOARD IS STUDIED IN DETAIL
• SIMPLER PROJECTS ARE WORKED UPON USING ARDUINO
• PROGRAMMING OF ARDUINO IS STUDIED
• DTMF IS RESPONSING WELL ON PRESSING BUTTONS IN PHONE
24 April 2012 SMART HOMES 13
14. WORK IN PROGRESS
• FINAL APPLICATION FOR ANDROID
• ARDUINO AND GSM MODULE CONNECTION
• AT COMMANDS STUDY
24 April 2012 SMART HOMES 14
