IR Sensor Basics
IR (Infrared) sensor, works in the infrared ration, finds in the application in sensing or detecting a certain type of characteristics of its surroundings by either emitting or detecting infrared radiation. It measures the heat emitted by an object and detecting the motion. This sensor uses a specific light sensor to detect a light wavelength in the Infrared spectrum. It has a LED which produces the light at the same wavelength what sensor needs. Another sensor detects the reflected light and measures the value of reflected light and measures how bright the object is. This principle is used in many tasks like line tracking, object detection etc.