+919830068336
sona2desai@gmail.com

Line Follower Robotic Car

  1. Home
  2. Project

Line Follower RC

  • In this project we will explain how to design and develop a Line Follower robotic car. This is an autonomous robotic car which detects and follows the black line drawn on the white floor. It uses 2 IR sensors to detect the white/black surface and transistor based motor driver is used to send the command to motors. Below are some of the features of this project
    • Input units consist of the sensors that detect the white path on black surface or the blakc path on white surface
    • QRD1114 IR reflective line/object sensor and CNY70 reflective optical sensor are the most commonly used sensors for line follower robotsIR reflective line/object sensor and CNY70 reflective optical sensor are the most commonly used sensors for line follower robot
  • This is an autonomous robotic car which detects and follows the black line drawn on the white floor!!
    • img

    Line Follower Robotic Car

    By www.NextGenRoboticX.com 20 Feb 2020 1

    Concepts of IR sensor based Line Follower Robot

  • Concept of working of line follower is related to light. We use the behavior of light at black and white surface. When light fall on a white surface it is almost full reflected and in case of black surface light is completely absorbed. This behavior of light is used in building a line follower robotic car.
    • img img
  • In this IR sensor based line follower robot we have used IR Transmitters and IR receivers also called photo diodes. They are used for sending and receiving light. IR transmits infrared lights. When infrared rays falls on white surface, it’s reflected back and detected by photodiodes which generates some voltage changes. When IR light falls on a black surface, light is absorb by the black surface and no rays are reflected back, thus photo diode does not receive any light.

    • Working principle of Line Follower Robot

  • Working of line follower is very interesting. Line follower robot senses black line by using IR sensor and then sends the signal to motor driver (Transistor based). Then motor driver drives the motor according to sensors' output.
    • img
  • In this project we are using two IR sensor modules namely left sensor and right sensor. 2 Transistors are used to power the motors.
  • When both left and right sensor senses white then robot move forward.
    • img
  • If left sensor comes on black line then robot turn left side.
    • img
  • If right sensor sense black line then robot turn right side until both sensor comes at white surface. When white surface comes robot starts moving on forward again.
    • img
  • If both sensors comes on black line, robot stops.
    • img

    Hardware Requirement

  • 2 Transistor base motor driver (BC-547)
  • Motor: DC 3-6v BO Gear Motor With Plastic Tire Wheel
  • 2 IR Sensor
  • External Power: Battery - 9V
  • Robot chassis

    • Project Diagram

    img

    Line Follower Robotic Car

    Advantages

  • Robot movement is automatic
  • It is used for long distance applications
  • Fit and forget system

    • Limitations

  • It always needs a path to run either white or black since the IR rays should reflect from the particular path.
  • Slow speed and instability on different line thickness or hard angles.

    • Application

  • Industrial : These robots can be used as automated equipment carriers in industries replacing traditional conveyer belts.
  • Automobile : These robots can also be used as automatic cars running on roads with embedded magnets.
  • Domestic : These can also be used at homes for domestic purposes like floor cleaning etc.
  • Guidance : These can be used in public places like shopping malls, museums etc to provide path guidance.
    • Comment Section

    Please Comment about this project