2. PROJECT ON
ACCIDENT MESSAGING
SYSTEM
PRESENTED BY:
JITHIN PRASAD
NANDAN.G.VISHNU
RAHUL.V.MOHAN
SONU SUNNY

3. INTRODUCTION
The main intention of this project is to
find the accident spot at any place
This project contains MEMS , GSM
module and a GPS modem interfaced
to the PIC microcontroller
contd…

4. GSM
Global system for mobiles(GSM)
technology is used to establish
cellular connection
GSM is a digital cellular
communication system
It is used for transmitting mobile
voice and data services

5. GPS
GPS(Global Positioning System)
GPS is used to trace the position
GPS Receiver gets the location
information from satellites

6. MEMS
MEMS(microelectromechanical
system) is a technique of combining
electrical and mechanical component
together on a chip
The device typically converts measured
mechanical signals into electrical signals

7. ABSTRACT
MEMS Sensor used to detect abrupt
vibration when an accident occurs
Detection and messaging system
composed of a GPS receiver,
microcontroller and GSM modem
GSM modem sends message to the
predefined mobile number

8. BLOCK DIAGRAM
POWER
SUPPLY
GPS
MODULE
RESET
CIRCUITRY
CRYSTAL
CIRCUITRY
MEMS
PIC
VOLTAGE
LEVEL
CONVERTER
GSM
MODULE

9. CIRCUIT COMPONENTS
PIC MICROCONTROLLER
GSM MODEM
GPS MODULE
MEMS CHIP
POWER SUPPLY
VOLTAGE LEVEL CONVERTER

10. PIC MICROCONTROLLER

11. FEATURES
PIC 16F73 is a 28 pin IC
4 K bytes flash program memory
192 bytes RAM
8 bit , 5 channel ADC
22 input / output pins
3 timers/counters

12. GSM MODEM
GSM modem is used to send information
collected from GPS module along with other
details to a specific mobile number

13. GPS MODULE
GPS module always receives the information
from satellites regarding the position of the
place where the accident occurs.

14. MEMS CHIP
Whenever any accident occurs MEMS chip
detects and sends electrical signal to the
ADC channel of the PIC microcontroller

15. POWER SUPPLY
Power supply unit provides regulated
5v power
The power supply circuit consists of
a bridge rectifier which is then
passed on to the regulator through a
filter circuit

16. MAX 232
MAX 232 is an dual driver / receiver
It is used to convert the TTL logic level to
RS232 logic levels during serial
communication if microcontrollers with PC

17. CIRCUIT DIAGRAM

18. GSM
GPS
SMS

19. WORKING
Whenever accident occurs MEMS
sensor detect and sends electrical
signal to the ADC channel of the PIC
microcontroller
By using GPS , we get particular
location where accident occurs,then
GSM modem sends message to
authorized mobile number

20. CONTD..
The GPS positioning is done in the
form of latitude and longitude along
with the exact location of the place
by making Google maps

21. ADVANTAGES
The immediate medication will be
provided to the accident victims in
the remote areas
Mobile number can be changed at
any time

22. DISADVANTAGES
In some places where there is no
provision of GSM networks it is
difficult for communication

23. APPLICATIONS &
FUTURE SCOPE
Automotive Security System
This system can be interfaced with Vehicle
Airbag System
This can also be developed by
interconnecting a camera to the controller
module that takes the photograph of the
accident spot that makes tracking easier

24. CONCLUSION
To take immediate action when an
accident occurs by alerting the
respective people by sending
message

25. REFERENCES
Websites:
www.microchip.com
www.datasheetcatalog.com
www.ti.com