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ObstacleAvoidance Robot
What Is “Robotics” ?   The word robotics is used to collectively    define a field in engineering that covers the    mimi...
A Basic Structure Of Obstacle      Avoidance Robot
Why Robotics?   Mobile robots perform various ways of    tasks to serve humans   No human guidance is required   This s...
What is ‘Obstacle avoidance’?A Path Describing The Purpose Of This Type Robot
OUR ROBOT:-   In this project our robot senses any obstacle    in its path, avoids it and resumes its running   Involves...
COMPONENTS:-   IR Sensor(Transmitter and receiver)   Microcontroller   Driver IC   Motor
Block diagram:-
Circuit Diagram:-
IR Sensor:-                  About   (IR) sensors based on reflected amplitude of    the surrounding objects   Non-linea...
IR Sensor:-                 Types:   ACTIVE INFRARED SENSORS   Break Beam Sensors   Reflectance Sensors
IR Transmitter and reciever:-                         About:   Mainly used to generate    IR signal   Uses timer IC555 i...
IR Sensor:-              Application:   Widely used for distance measurement    purposes   Surface feature detection   ...
Microcontroller(8051)
Microcontroller(8051):-                   About:   Single integrated circuit containing a processor    core, memory, and ...
Driver(L293D):-                 About:   The L293D is a quadruple half H-bridge    bidirectional motor driver IC   Can d...
D.C Motor:-   Stepper Motor   D.C Geared Motor
D.C Geared Motor: Free running torque & current  are ideally zero Increased load implies,  increased torque, current  dr...
Stepper motor:   Used for measured rotation   Can be held at a particular    position of the shaft    Ideal for many   ...
Single Coil   Double CoilExcitation     Excitation
Obstacle Avoidance/Detection           Algorithm.Case1: No obstacles(3 sensors are deactivated)
Case 2 :Obstacle detected on right side:
Case 3: Obstacle on the Left side
Case 4: Obstacle in front of the robot
ELECTRICAL DESIGN:-   Wiring   Layout   Implementation transmitter circuit   Power supply
Wiring and    Implementation oflayout(PCB)      transmitter
Power Supply System: Suitable power source is needed to run   the    robots   Mobile robots are most suitably powered by...
MECHANICAL DESIGN:   Design of chassis/body   Alignment of circular wheels   Fixing motors   Screwing of PCB
Applications:- The modification of this logic has been specially designed for vacuum cleaner. Just by making small chang...
FURTHER IMPROVEMENTS & FUTURE           SCOPE :-    Adding a Camera    Use as a fire fighting     robot
References:-www.google.co.inwww.wikipedia.comwww.fadooengineers.comwww.slideshare.comwww.mycollegeproject.com
Thank You           Presented by      Rahul Dey (09187016017)Subham Bhattacharjee (09187016021)   Kaustabh Mallik (0918701...
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Obstacle avoidance robot

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Obstacle avoidance robot

  1. 1. ObstacleAvoidance Robot
  2. 2. What Is “Robotics” ? The word robotics is used to collectively define a field in engineering that covers the mimicking of various human characteristics. It must be able to perform certain tasks we set for it. The desired task must be achieved within some given limitations. It may be human controlled or automatic.
  3. 3. A Basic Structure Of Obstacle Avoidance Robot
  4. 4. Why Robotics? Mobile robots perform various ways of tasks to serve humans No human guidance is required This sort of project is very much useful in the industries where the automated supervision is required
  5. 5. What is ‘Obstacle avoidance’?A Path Describing The Purpose Of This Type Robot
  6. 6. OUR ROBOT:- In this project our robot senses any obstacle in its path, avoids it and resumes its running Involves the pre-computation of an obstacle-free path which a controller guides the robot
  7. 7. COMPONENTS:- IR Sensor(Transmitter and receiver) Microcontroller Driver IC Motor
  8. 8. Block diagram:-
  9. 9. Circuit Diagram:-
  10. 10. IR Sensor:- About (IR) sensors based on reflected amplitude of the surrounding objects Non-linear and depends on the reflectance characteristics of the object surface IR sensors able to accurately measure distances with reduced response times
  11. 11. IR Sensor:- Types: ACTIVE INFRARED SENSORS Break Beam Sensors Reflectance Sensors
  12. 12. IR Transmitter and reciever:- About: Mainly used to generate IR signal Uses timer IC555 in astable multivibrator mode to generate square wave Continuous pulses of 50% duty cycle of frequency 38 KHz
  13. 13. IR Sensor:- Application: Widely used for distance measurement purposes Surface feature detection Barcode decoding As a tracking system
  14. 14. Microcontroller(8051)
  15. 15. Microcontroller(8051):- About: Single integrated circuit containing a processor core, memory, and programmable input/output peripherals Program memory in the form of NOR flash or OTPROM is also often included on chip Microcontrollers are used in automatically controlled products and devices Make it economical to digitally control even more devices and processes
  16. 16. Driver(L293D):- About: The L293D is a quadruple half H-bridge bidirectional motor driver IC Can drive current of up to 600mA with voltage range of 4.5 to 36 volts Drive small DC-Geared motors, bipolar stepper motor
  17. 17. D.C Motor:- Stepper Motor D.C Geared Motor
  18. 18. D.C Geared Motor: Free running torque & current are ideally zero Increased load implies, increased torque, current drawn & power consumption Power supplied by a motor is the product of output shaft’s rotational velocity & torque Can run in both directions
  19. 19. Stepper motor: Used for measured rotation Can be held at a particular position of the shaft Ideal for many autonomous robots requiring higher precision
  20. 20. Single Coil Double CoilExcitation Excitation
  21. 21. Obstacle Avoidance/Detection Algorithm.Case1: No obstacles(3 sensors are deactivated)
  22. 22. Case 2 :Obstacle detected on right side:
  23. 23. Case 3: Obstacle on the Left side
  24. 24. Case 4: Obstacle in front of the robot
  25. 25. ELECTRICAL DESIGN:- Wiring Layout Implementation transmitter circuit Power supply
  26. 26. Wiring and Implementation oflayout(PCB) transmitter
  27. 27. Power Supply System: Suitable power source is needed to run the robots Mobile robots are most suitably powered by batteries The weight and energy capacity of the batteries may become the determinative factor of its performance
  28. 28. MECHANICAL DESIGN: Design of chassis/body Alignment of circular wheels Fixing motors Screwing of PCB
  29. 29. Applications:- The modification of this logic has been specially designed for vacuum cleaner. Just by making small changes in software this system can be used for avoiding concealed paths. With proper programming we can use it as a weight lifter, auto parking assistance.
  30. 30. FURTHER IMPROVEMENTS & FUTURE SCOPE :-  Adding a Camera  Use as a fire fighting robot
  31. 31. References:-www.google.co.inwww.wikipedia.comwww.fadooengineers.comwww.slideshare.comwww.mycollegeproject.com
  32. 32. Thank You Presented by Rahul Dey (09187016017)Subham Bhattacharjee (09187016021) Kaustabh Mallik (09187016025)Subhankar Chatterjee (09187016022) Anirban Chakraborty (09187016039) Sourajit Chakraborty (09187016027) Md. Mehran Abul (09187016029) Chandrima Dutta (09187016037) Souvik Brahmachari (09187016018)

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