Infrared Sensors Can Be Classified According To The Detection Mechanism

Infrared sensors can be divided into photon detectors (based on photoelectric effects) and thermal detectors (based on thermal effects) according to the detection mechanism.
(1) The heat detector uses the thermal effect of infrared radiation, and the sensitive components of the detector absorb the radiation energy and cause the temperature to rise, and then change some relevant physical parameters through the measurement object
The change in parameters determines the infrared radiation absorbed by the detector.
(2) The photon detector uses the photon stream of incident light radiation to interact with the electrons in the detector material, thereby changing the energy state of the electrons and causing various electrical phenomena.
Infrared sensor applications
Infrared sensors are commonly used for non-contact temperature measurement, gas composition analysis and non-destructive testing, and are widely used in medicine, military, space technology and environmental engineering.
(1) Flame detector (2) Infrared thermometer (3) Infrared imaging
Infrared sensor application attention problem, infrared sensor is a very important part of the infrared detection system, but it is very squeamish, if not paid attention in use, it may lead to infrared sensor damage. Therefore, infrared sensors should pay attention to the following points in use:
(1) We must first pay attention to understanding the performance indicators and application range of infrared sensors and grasp its use conditions.
(2) It is necessary to pay attention to the working temperature of the sensor, and generally choose an infrared sensor that can work at room temperature to facilitate maintenance
(3) Adjust the working point of the infrared sensor appropriately. In general, the sensor has an optimal operating point. The signal-to-noise ratio of infrared sensors is maximum only when operating at the optimal operating point.