Transcript Document

OBSTACLE AVOIDER USING
SENSOR TECHNOLOGY
Kiran kumar
Dileep raju
Bojja Haranath
Indian Institute of Technology
Hyderabad
What is a sensor?
Wikipedia Definition
“ Device that detects(senses) changes in
the ambient conditions or in the state of
another device or a system, and conveys
or records this information in a certain
manner”
SPECIFICATIONS OF
SENSOR
Accuracy: error between the result of a
measurement and the true value being
measured.
Resolution: the smallest increment of
measure that a device can make.
Sensitivity: the ratio between the change
in the output signal to a small change in
input physical signal. Slope of the inputoutput fit line.
Repeatability/Precision: the ability of the
sensor to output the same value for the
same input over a number of trials
TYPES OF SENSORS
• Bump sensors, which are switches activated when
the robot touches an obstacle.
• Infrared proximity detectors, which detect the
presence of an object in front of the sensor.
• Ultrasonic range sensors, which determine the
range of the object in front of it.
• Laser range finders, which work on the same
principle as ultrasonic
PRIMARY REQUIREMENT OF
ROBOT
 Obstacle avoidance is a primary
requirement for any autonomous
mobile robot.
 The robot acquires information about
its surroundings through sensors
mounted on the robot.
COMPONENTS
 Micro controller
 AVR Board Atmega 8
 Connecting Wires
 Infrared Sensor ( analog )
 LCD Screen
 DC Adapter
 2 DC Motors
 USB-ASP Programmer
 3 Pin Relimate for IR Sensor
 4 Pin Relimate for LED
 6 Pin Relimate for Programmer
 8 Pin Relimate for LCD
PATH OF THE ROBOT
REFERENCES:
www.wikipedia.com
www.i3indya.com
www.electronicsviaweb.com
Thank You