This document describes a vehicle accident detection system that uses GPS and GSM technology. When a vehicle accident is detected by a vibration sensor, the sensor sends a signal to an ARM controller. The controller then sends an alert message through a GSM modem to emergency services, including the location from the GPS modem. This allows emergency services to quickly locate the accident site based on the GPS coordinates received after an accident is detected.

1. Vehicle Accident Detection System (VAD) Using
GPS & GSM Modem

2. ABSTRACT
The main objective of our project is to provide an optimum solution to the
traffic hazards and the road accidents. According to this project when a
vehicle meets with an accident , immediately vibration sensor will detect
the signal and sends it to ARM controller. Microcontroller sends the alert
message through the GSM MODEM including the location to police control
room or a rescue team. So the police can immediately trace the location
through the GPS MODEM after receiving the information.

3. INTRODUCTION
 The main intention of this project is to find the accident spot at any
place and intimating it to ambulance through the GPS and GSM
networks.
 The GPS based vehicle accident identification module contains
MEMS,GSM module and a GPS modem connected to the
microcontroller.
 Global system for Mobile (GSM) technology is used to establish
cellular connection.
 GPS is used to trace the position of the vehicle.

4. HARDWARES USED
 GPS-Global Positioning System
 GSM – Global System for Mobile Communication
 AT89S52
 SENSOR
 MAX 232
 16*2 LCD
 RESET
 CRYSTAL
 EEPROM
 RESISTOR
 BUZZER

5. CIRCUIT DIAGRAM

6. BLOCK DIAGRAM

7. AT89S52
 8K Bytes of In-System Programmable
(ISP) Flash Memory
 4.0V to 5.5V Operating Range
 Fully Static Operation: 0 Hz to 33 MHz
 Three-level Program Memory Lock
 256 x 8-bit Internal RAM
 32 Programmable I/O Lines
 Three 16-bit Timer/Counters
 Eight Interrupt Sources
 Low-power Idle and Power-down
Modes
 Interrupt Recovery from Power-down
Mode
 Dual Data Pointer
 Power-off Flag

8. SENSOR
 Piezoelectric sensor
 Used as accident detection
sensor
 A kind of transducer
 Input : applied force,
pressure, or strain
 Output : signal
 It will first sense the
occurrence of an accident
 Give its output to the
microcontroller

9. GPS - Global Positioning System
 The GPS detects the latitude and
longitudinal position of a vehicle.
 Used in vehicles for both tracking
and navigation.
 Enables to keep track of the vehicles.
 helps to reach the destination.
 sends the information through GSM.

10. GSM – Global System for Mobile
Communication
 Used as a mediator
 Highly economic and less
expensive
 Highly efficient communication
 Used to monitor and control
 The latitudes and longitude
position of the vehicle is sent as
message through the GSM
 Used for sending the message

11. EEPROM
 24C04 EEPROM is used
 EEPROM stores the
mobile numbers
 Data stored will retain
even the power is off for
long time

12. 16X2 LCD
 Used to display status of
the vehicle
 Displays alphanumeric
characters and symbols
 can display up to one 8-
character line or two 8-
character lines
 Low power consumption

13. APPLICATIONS AND ADVANTAGES
 Vehicle Accident Detection System can be used in the school bus.
 This project can be used for cab or companies of cab.
 If vehicle has undergone to an accident can be identified by using
tracking technology without any delay.
 The immediate medication will be provided to the accident
victims in the remote areas.

14. FUTURE SCOPE
 We can monitor some parameters of vehicle like overheat or
LPG gas leakage.
 We can dial an emergency call if the vehicle goes out of a
certain/ pre-decided track.
 This system can be interfaced with vehicle airbag system
that prevents vehicle occupants from striking interior
objects such as the steering wheel or window.

15. CONCLUSION
50%
10%
10%
7%
23%
Due to accidents
Unintentional deaths
Suicides
Other causes
Reductions in deaths
To minimize the deaths and the severe conditions due to accidents.
The GPS and GSM technologies are used where immediate action
would take place by the ambulance/police service which might
reduces the severity.

16. PROJECT COSTING
COMPONENTS IN RS.
 GPS-Global Positioning System 2999
 GSM-Global System for Mobile Communication 899
 AT89S52 1198
 SENSOR 395
 MAX 232 15
 16*2 LCD 160
 RESET 3
 CRYSTAL 25
 EEPROM 50
 RESISTOR 3
 BUZZER 14
 OTHER MISCELLANEOUS 100
RS-6000 /-

17. THANK YOU