Interface IR Distance Sensor With 8051

Infrared sensors find numerous applications in electronic systems.

  • IR sensor have two part IR transmitter and receiver.
  • The IR receiver detects the IR radiations transmitted by an IR LED.
  • The output voltage level of this IR sensor depends upon the intensity of IR rays received by the receiver.
  • The sensors output in its original analog form.
  • The output of IR sensor is processing through ADC.
  • The ADC is calibrated to get almost accurate distance measurement.


  • Car Parking System,
  • Distance Measurement Device.

Hardware Required

  • Ir Sensor.
  • ADC 0804.
  • 8051 MicroController.

Pin Diagram

  • VCC:+5v.
  • OutPut:Analog Output.
  • GND: GND.