The document describes an ultrasonic automatic vehicle braking system for forward collision avoidance. The system uses an ultrasonic emitter and receiver to detect obstacles in front of the vehicle within a predetermined distance. It then uses an Arduino to control the brakes intermittently for safe braking to avoid collisions. The system is designed to automatically brake the vehicle if obstacles are sensed to address accidents caused by driver delays in braking. It functions by using ultrasonic waves to measure the distance to obstacles and trigger braking as needed. The system provides advantages like maintaining stability, helping inexperienced drivers, controlling steering to avoid collisions, and increasing safety.

1. Ultrasonic Automatic Vehicle
Braking System for Forward
Collision Avoidance
MD NAYEEM
Reg no: 1213541
Session: 2012-13
RAJIB KUMAR HALDER
Reg no:1213524
Session: 2012-13
Supervised by:
Lutfi Habiba
Faculty member, Dept of CSE in IST

2. Project Moto
SAFE DRIVE , SAFE LIFE

3. Driving is a compulsory activity now-a-days. People use
their car to move from one place to other place. The
number of vehicle is increasing day by day. Day by day,
the number of accident is so high and uncertainly.
Accident occurs every time and everywhere and causes
worst damage, serious injury and death. These
accidents are mostly caused by the delay of the driver
to hit the brake. Such actuality motivated this project to
be built.
Project Motivation

4. An ultrasonic car braking system includes; an ultrasonic wave
emitter provided in a front portion of an automatic braking
car producing and emitting ultrasonic waves frontward in a
predetermined distance in front of the car. Ultrasonic
receiver also formed in a front portion of the car operatively
receiving a reflective ultrasonic wave signal as reflected by
obstacles positioned within the pre-determined distance in
front of the automatic braking car. The reflected wave
(detection pulse) was measured to get the distance between
the vehicle and the obstacle. Then arduino is used to control
to brake the car intermittently for automatically braking the
car for a safe braking purpose.
Project Overview

5. What is Automatic Vehicle Break System
Automatic vehicle system
is an automobile safety
system that allows the
wheels on a motor vehicle
to maintain tractive
contact with the road
surface according to driver
inputs while breaking,
preventing the wheels
from locking up and and
avoiding uncontrolled
skidding.

6. How It Functions
This project is designed to develop a new system that can solve this
problem where drivers may not brake manually but the vehicles can stop
automatically due to obstacles. This project is about a system that can
control braking system for safety. Using ultrasonic as a ranging sensor, it
functions based on ultrasonic wave.
The core functionality for this project is, cars can automatically brake due
to obstacles when the sensor senses the obstacles. The braking circuit
function is to brake the car automatically after received signal from the
sensor.

7. HOW IT FUNCTIONS

8. Block Diagram

9. Working Principle

10. 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.