This document describes an ultrasonic automatic vehicle braking system for forward collision avoidance. The system uses an ultrasonic sound sensor and Arduino board as its core components. It functions by using the ultrasonic sensor to emit and receive ultrasonic waves to detect obstacles in front of the vehicle. When an obstacle is detected within a certain distance, the system automatically applies the brakes to avoid a collision. The advantages are that it helps maintain vehicle stability and control to avoid accidents, particularly for inexperienced drivers. The disadvantages are it can miss detecting some small or curved objects and the system increases maintenance costs.

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. Contents
 Project Moto
 Project Motivation
 What is Automatic Vehicle Brake System?
 Logic Behind Automation
 Core Components
 How It Functions
 Block Diagram
 Working Principle
 Advantages
 Disadvantages

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.  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)
Logic Behind Automation

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.

14. Wishing you all,
Safe Drive, Safe Life.