The region between 3 and 6µm is known as the mid-infrared and infrared radiation which has a wavelength greater higher than 6µm is known as far-infrared.Īn IR sensor consists of an IR LED and an IR Photodiode together they are called Photo–Coupler or Opto–Coupler. The wavelength region which ranges from 0.75 to 3µm is known as the near-infrared region. Infrared sensors are also capable of measuring the heat being emitted by an object and detecting motion. It counts continuously for 5 seconds.įor designing Fan Speed Measurement Circuit using IR Sensor & Arduino we need the following components:Īn infrared sensor is an electronic instrument that is used to sense certain characteristics of its surroundings by either emitting and/or detecting infrared radiation. IR transmits IR rays which reflect back to the IR receiver and then IR Module generates an output or pulse which is detected by the Arduino controller when we press the start button. Here we are going to design an Arduino-based digital tachometer using an IR sensor module to detect objects for count rotation of any rotating body. There are two types of tachometers one mechanical and another one is digital. The tachometer is an RPM counter which counts the no. So let’s learn about Fan Speed Measurement using IR Sensor & Arduino.

The IR sensor module consists of IR Transmitter & Receiver in a single pair that can work a Digital Tachometer. Simply we have interfaced IR sensor module with Arduino and 16*2 LCD module for display.

In this project, we have designed Digital Tachometer using an IR Sensor with Arduino for measuring the number of rotations of rotating fans in RPM.

Fan Speed Measurement using IR Sensor & Arduino:įan Speed Measurement using IR Sensor & Arduino:.

Sensor infrared proteus