IR Controlled Robotic Vehicle
IR Controlled Robotic Vehicle Introduction ďƒ˜ 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...
CPU
I/O Port
RAM
Timer
ROM Serial COM Port
A single chip Microcontroller
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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 http://www.edgefxkits.com/
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 ďƒ˜ A DC motor is an electric motor that runs on direct current (DC) electricity. In any electric motor, operation is based on simple electromagnetism. ďƒ˜ 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). ďƒ˜ 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 ďƒ˜ Low cost. ďƒ˜ Simple TV remote controls can be used as controllers.
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IR Controlled Robotic Vehicle Disadvantage ďƒ˜ Limited range of control. ďƒ˜ Needs to be line of sight.
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IR Controlled Robotic Vehicle Future Enhancement ďƒ˜ 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 robot’s actions.
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