To reduce the risk of road accidents(excluding natural disaster) we are making the use of bluetooth.

1. ACCIDENT PREVENTION USING WIRELESS
COMMUNICATION
Presented By:
Rupesh Kumar
Department of Electronics And Communication

2. Overview
 INTRODUCTION
 ACCIDENT
 IMPACTS OF ACCIDENTS
 STATISTICS
 BLUETOOTH
 EQUIPMENT
 WORKING
 COMPONENTS
 OPERATION
 AUTOMATIC BREAKING PUMP AND VALVES
 AUTOMATIC BREAKING SYSTEM
 FUNCTIONS OF HYDRALUIC VALVES
 CONCLUSION

3. Introduction
 World is plagued by Accidents.
 Human errors.
 Need an alert for the driver.
 Checking the speed of the car is important.

4. Accident
High speed leads to accidents…
Accident
=
Short distance
+
High Speed
“Speed Thrills, but Kills”

5. Impacts of Accidents
1) Individual
a) Physical
b) Psychological
c) Economic
2) Community
a) Psychological
b) Economic
3) National
a) Economic

6. Statistics
1 person dies every 6 minutes, 10 are injured in the
same time frame.
India's share of global car accidents is 10%
6 % of the world's road accident deaths happen in
India.

7. Bluetooth
 Modulation used in Bluetooth is Gaussian Frequency
Shift Keying.
 Bluetooth can communicate with 8 other devices
simultaneously .
 Hence we can check the speeds of eight cars
simultaneously.
 Range of communication is up to 100 meters of each
other.
100 mts.

8. Modulation in Bluetooth

9. Equipment
The group of eight devices is known as
piconet.
Piconet is a collection of Master and slaves.
The frequency of 2.4 GHz is shared among all
the devices in the piconet.

10. Master and Slave configuration
Piconet

11. Master is a device which controls all the
devices around it.
Slave is a device which is being
controlled by a master.

12. Working
If the distance between two vehicle is within the 100m
the Bluetooth devices get enabled.
> 100m
<=100m

13. If the distance come closer within 10m
the automatic braking system takes the control.

14. • After the speed of the car is reduced, the
hydraulic valves decreases the pressure on the
braking circuit, thus effectively decrease the
braking force on the wheels.
100KMPH 10KMPH

15. • During overtaking

16. Components
• Four main components of an automatic
braking system:
1)Speed sensors
2)Pump
3)Valves
4)Controller

17. Operation
• Short distance, low power radio operating in the
unlicensed spectrum of 2.4 GHz and using a nominal
antenna power of 20 dBm.
• At the 20 dB the range is 100 meters, meaning
equipment must be Within 100 meters to each other
(about 328 feet) to communicate using the
Bluetooth standard.
• With the help of this technology we can send data to
the eight devices.

18. Automatic Braking Pump and Valve
A computer constantly monitors the distance between
each of these cars .
When it senses that the car is getting too close it
moves the hydraulic valves to increase the pressure on
the braking circuit.
It effectively increasing the braking force on the
wheels.

19. Automatic Braking System
Controls the speed of the car:
Control signal The computer
Travelling car Braking system
start stop

20. Function of Hydraulic Valve
• In case one, the valve is open; pressure from the
master cylinder is passed right through to the brake.
• In case two, the valve blocks the line, isolating that
brake from the master cylinder. This prevents the
pressure from rising further should the driver push the
brake pedal harder.
• In case three, the valve releases some of the pressure
from the brake.

21. Conclusion
• The Bluetooth technology is being widely adopted by
the Industry leaders.
• It provides a simple, logical answer to all the
Problems, which is, build a single common radio into
every mobile computer.

22. Any Questions???

23. Thank You