This document describes an ultrasonic automatic vehicle braking system for forward collision avoidance. The system uses an ultrasonic sensor and Arduino to detect obstacles in front of a vehicle and automatically apply the brakes if a collision is detected to be imminent. Road accidents pose a major safety and economic problem globally and in Bangladesh. This system aims to help avoid front-end collisions by taking control of braking when the driver is unable to react quickly enough. It functions by emitting and receiving ultrasonic waves to measure the distance to obstacles and applies the brakes if within a threshold distance. The core components are the ultrasonic sensor and Arduino microcontroller.

1. Ultrasonic Automatic Vehicle
Braking System for Forward
Collision Avoidance
Md Nayeem Rajib Kumar Halder
Reg no: 1213541 Reg no: 1213541
Session: 2012-13 Session: 2012-13
Supervised by:
Lutfi Habiba
(Lecturer, Dept. of CSE)

2. Content
CONTENTS

3. Project Moto
SAFE DRIVE , SAFE LIFE

4. Project Motivation
 A global phenomenon –
1.25 million die each year
in the world ( WHO –
2016 ) .
 Number of road accident
increases in the eve of
festival
Table : September 7 to September 18
in 2016 (Eid-Ul-Adha Holidays)

5. Project Motivation
 12000 lives and 35000 injuries annually ( ARI, 2016 )
 Economic cost is 2 to 3% of the country’s GDP, an
enormous loss in health related cost (WHO, South
Asian Chapter, 2015 )
 In Bangladesh, average 8 persons die everyday. (BRTA)
 1 child is killed in road accident, every 3 minutes in the
world

6. What is Automatic Vehicle Brake System
 Automobile Safety System
 Allows the wheels on a
motor vehicle to maintain
tractive contact
 Prevents the wheels from
locking uo
 Avoids uncontrolled
skidding

7. How automation helps
 In case of manual brake, only
40% of the drivers apply brake
in accidental situations .
 There were casualities about
2.6 millions last year due to
front end vehicle collison only.
 Laboratory test result states
that, 47% of the impact collision
can be reduced using brake
automation. ( NHTSA- 2016)

8. Core Components
(b) Arduino(a) Ultrasonic Sound Sensor

9. HOW IT FUNCTIONS
• Emitter/Transducer:
Emits ultrasonic
waves frontward.
• Detector/ Receiver:
receives a reflective
ultrasonic wave signal.
• Detection pulse:
Measures the distance
between car and
obstacles

10. Block Diagram

11. Working Principle

12. Advantages
 It allows driver to maintain directional stability.
 It is more helpful for new, inexperienced
drivers.
 It controls over the steering to avoid unwanted
collision.
 It is safe & effective.

13. Disadvantages
 Difficult to sense from soft, curved, thin or
small objects.
 It is very costly.
 Maintenance cost of a car after equipped with
this technology rises higher.