Basic introduction of infrared sensor

A sensor that uses the physical properties of infrared to make measurements. Infrared is also called infrared light, which has properties such as reflection, refraction, scattering, interference, and absorption. Any substance, as long as it has a certain temperature (above absolute zero), can radiate infrared rays. The infrared sensor is not in direct contact with the measured object during measurement, so there is no friction, and it has the advantages of high sensitivity and fast response.