Controlling Robotic Vehicle With IR Remote

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IR Controlled Robotic Vehicle
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IR Controlled Robotic Vehicle
Introduction

• To control a Robotic vehicle using a standard TV
  remote. IR sensor is interfaced to the control
  unit on the robot for sensing the IR signals
  transmitted by the remote. This data is conveyed
  to the control unit which moves the robot as
  desired. An 8051 series microcontroller is used
  in this project as control device.

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IR Controlled Robotic Vehicle
Block Diagram
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IR Controlled Robotic Vehicle
Hardware Requirements

• 8051 series Microcontroller
• IR Sensors
• DC motors
• Motor Driver IC
• Crystal
• Resistors
• Capacitors
• Voltage Regulator
• Battery
• Robot Body

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IR Controlled Robotic Vehicle
Software Requirements

• Keil compiler
• Language Embedded C or Assembly

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IR Controlled Robotic Vehicle
Microcontroller

• It is a smaller computer
• Has on-chip RAM, ROM, I/O ports...

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IR Controlled Robotic Vehicle
Internal Structure of A Micro Controller- AT
89S52/51
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IR Controlled Robotic Vehicle
Microcontroller Pin Description
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IR Controlled Robotic Vehicle
TSOP 1738

• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against electrical field
  disturbance
• TTL and CMOS compatibility
• Output active low
• Low power consumption
• High immunity against ambient light
• Continuous data transmission possible (up to 2400
  bps)
• Suitable burst length .10 cycles/burst

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IR Controlled Robotic Vehicle
Description TSOP 1738

• The TSOP17 series are miniaturized receivers
  for infrared remote control systems.
• PIN diode and preamplifier are assembled on lead
  frame, the epoxy package is designed as IR
  filter.
• The demodulated output signal can directly be
  decoded by a microcontroller.
• TSOP1738 is the standard IR remote control
  receiver series, supporting all major
  transmission codes.

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IR Controlled Robotic Vehicle
DC- MOTOR

• A DC motor is an electric motor that runs on
  direct current (DC) electricity. In any electric
  motor, operation is based on simple
  electromagnetism.
• A simple 2-pole DC electric motor (here red
  represents a magnet or winding with a "North"
  polarization, while green represents a magnet or
  winding with a "South" polarization).
• Every DC motor has six basic parts -- axle, rotor
  (a.k.a., armature), stator, commutator, field
  magnet(s), and brushes.

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IR Controlled Robotic Vehicle
Working Principle

• Transmitting end uses a TV remote through which
  IR commands are transmitted.
• At the receiver end, these commands are used for
  controlling the robot in all directions.
• Such as forward, backward and left or right etc.
• At the receiving end the movement is achieved by
  two motors that are interfaced to the
  microcontroller.

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IR Controlled Robotic Vehicle
Working Principle

• RC5 based coded data sent from the TV remote is
  received by an IR receiver interfaced to the
  microcontroller.
• The program on the microcontroller refers to the
  RC5 code to generate respective output.
• Based on the input data to operate the motors
  through a motor driver IC.
• The motors are interfaced to the control unit
  through motor driver IC.

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IR Controlled Robotic Vehicle
Applications

• Remote control robotic vehicles have various
  scientific uses including hazardous environments.
• Can be used by Military and Law Enforcement
  agencies.
• Can be used for Search and Rescue operations.

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IR Controlled Robotic Vehicle
Advantage

• Low cost.
• Simple TV remote controls can be used as
  controllers.

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IR Controlled Robotic Vehicle
Disadvantage

• Limited range of control.
• Needs to be line of sight.

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IR Controlled Robotic Vehicle
Future Enhancement

• Further the project can be enhanced by DTMF
  technology. With this technology we can control
  the robotic vehicle by a cell phone. This
  technology has an advantage over long
  communication range as compared to line of sight
  communication in IR technology.

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IR Controlled Robotic Vehicle
Conclusion

• This project is used to control robotic vehicle
  by using IR remote. IR sensor is interfaced with
  microcontroller on the robot for sensing signals
  from remote. Infrared control requires line of
  sight in order to function the receiver must be
  able to see the transmitter at all times in
  order to receive data. Infrared remote controls
  (such as universal remote controls for
  televisions) are used to send commands to an
  infrared receiver connected to a microcontroller
  which then interprets these signals and controls
  the robots actions.

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