Rahul Gurjar presented on using Bluetooth to control car speed. The presentation covered: 1) How high speeds often lead to accidents and Bluetooth allows monitoring of up to 8 cars within 100 meters to prevent accidents. 2) The components involved include speed sensors, a pump, valves and controller to automatically apply the brakes if cars get too close. 3) The automatic braking system works by constantly monitoring distance between cars and activating hydraulic valves to increase braking pressure if they get too close.

1. BASAVAKALYAN ENGINEERING COLLEGE BASAVAKALYAN
MECHANICAL DEPARTMENT
Seminar topic:
“CAR SPEED CONTROL USING BLUETOOTH”
PRESENTED BY
RAHUL GURJAR
USN NO: 3BK12ME071
GUIDED BY :
PROF. SHIVAJI

2. ContentsContents
Introduction
Accident
Effects
Statistics
Bluetooth
Equipment
Working
Components
Operation
Automatic braking pump
and valves
Automatic braking systems
Functions of hydraulic
valves
conclusion

3. INTRODUCTION
“DOCTORS COME AFTER ACCIDENT
BUT WE ENGINEERS CAN PREVENT
ACCIDENT”

4. World is plagued by accidents.
Human errors
Need an alert for the driver
Checking the speed of the car is
important

5. ACCIDENT
High speed leads to
accidents.
Accident =
short distance
+
high speed

6. STATISTICS
1
2 3
4
5
61 person dies every 6 minutes 10 are
injured in the same frame
Indias share of global car accidents is
10%
6% of the worlds road accident deaths
happen in India.
1
2
3
4

7. Death
Injuries
Traffic problems
Loss of asserts

8. BLUETOOTH
Bluetooth can communicate
with 8 other devices
simultaneously
Hence we can check the speed
of 8 cars simultaneously
Range of communication is up to
100 meters of each other
100 mts

9. Equipment
The group of 8 devices is known as
PICONET.
PICONET is a collection of master
and slaves .
The frequency of 2.4GHz is
shared among all the devices in the
piconet.

10. Equipment
 Master is a device
which controls all
the devices around
it.
Slave is a device
which is being
controlled by a
master.
• Here A,B are masters and S1 to S6 are the
slaves.

11. >100 mts.
• If the distance between two
vehicle is within the 100m the
Bluetooth devices get enabled.
<=100 mts.

12. •If the distance come closer
within 10m the automatic
braking system takes the
control.
<10 mts.

13. COMPONENTS
1)Speed sensors
2)Pump
3)Valves
4)Controller

14. • 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.

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

16. • Controls the speed of the car.
control signal controller
Travelling car braking system
start stop
AUTOMATIC BRAKING SYSTEM

17. FUNCTIONS OF HYDRAULIC VALVES
In position one the valve is opening
,pressure from the master cylinder is passed
right through to the brake.
In position 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 position three, the valve releases some of
pressure from the brake

18. Advantage
It reduces the accident rate
It gives the alert to driver
Its maintenance is low
This technology gives safety

19. Disadvantage
Every car must and should have
Bluetooth to communicate with
each other
Due to the automatic braking
system the throttle valve get
damage
The automatic braking system is
some what costlier

20. • The Bluetooth technology is being widely
adopted by the Industry leaders.
• The possibility for new applications is very
exciting with this Versatile technology.
• It provides a simple, logical answer to all the
Problems-which is built a single common
radio into every mobile computer.
• It neither do companies have to worry about
WAN, nor do communication companies need
to worry about building external cables.
CONCLUSION

21. REFERENCES:
GOOGLE
WWW.123SEMINARONLY.COM

22. Thank youThank you