1. DESIGN OF VEHICLE ACCIDENT
ALARM BASED SYSTEM USING
GSM & GPS
K.SNEHA
10LO6D5504
Under The Guidance Of
Sunitha

2. ABSTRACT
• Aim of the project is to automatically detect a traffic
accident.
• By means of satellite navigation system, first aid
rescuers can accurately locate the place.

3. 1
BLOCK DIAGRAM
POWER
SUPPLY
ARM 7 16X2 LCD
LPC2148 DISPLAY UNT
MEMS
Serial GSM
Communication
DOORS MODEM
(DC
MOTOR)
GPS MODEM

4. MEMS
• MEMS is apart of the semiconductor family named
(Micro electro mechanical systems).
• Accelerometers can measure acceleration in 2
dimensional or 3 dimensional spaces.
• The free scale MMA7260Q is a 3-axis accelerometer,
meaning it can detect a gravity force in X, Y and Z
axes.

5. ARM7
• LPC2148 is a 64 pin IC
• It provides 8 kb to 40kb of on-chip static RAM and
32kb to 512kb of on-chip flash memory
• Operating voltage I 2.7v to 3.3v.

6. GPS
• Features:
• SiRF star high performance GPS Chip Set
• Very high sensitivity (Tracking Sensitivity)
• Extremely fast TTFF (Time To First Fix) at low
signal level
• Compact size (25.4mm * 25.4 mm * 3.3mm) suitable
for space-sensitive application

7. GSM
• This module can be easily interfaced with it AT
commands over TTL serial interface.
• It operates at 900MHZ or 1,800MHZ.
• Current Consumption in normal operation
250mA, can rise up to 1Amp while transmission.

8. AT COMMANDS
• AT+Cmgr= 1------------To read received messages
• AT+Cmgs=“phone no”--------To send message

9. POWER SUPPLY
• In this first a step-down transformer used to step
down A.C. 230Volts to A.C. 12Volts.
• This is given as input to the bridge diode circuit
which gives a D.C Voltage.

10. SERIAL COMMUNICATION
• Operates From a Single 5-V Power Supply
• Operates Up To 120 kbit/s
• Low Supply Current ...8 mA Typical

11. LCD
• FEATURES of 16X2 LCD
• 5 x 8 dots with cursor
• + 5V power supply (Also available for + 3V)
• 1/16 duty cycle

12. SCHEMATIC DIAGRAM

13. APPLICATIONS ADVANTAGES
• Anti-theft systems • Sophisticated security
• Crash recorders • Alert message to
mobile phone
• Event recorders
• Mobile number can be
• Dead reckoning changed at any time

14. RESULT

15. CONCLUSION
• To shorten the alarm time and locate the accident spot
accurately. Which will save the rescuers form wasting
their time in search.

16. BIBLOGRAPHY
• ARM Microcontroller and embedded systems
by Muhammad Ali Mazidi and Janice Gillis pie Mazidi.
Pearson Education
• Armlpc2148 Data Sheets
• www.google.com

17. Thank you…