Infrared sensor which classification infrared sensor works

April 13, 2024

Infrared sensors have been widely used in modern science and technology, national defense science and technology and industrial and agricultural science and technology. With the development of microelectronics technology and the continuous expansion of the application of sensors, infrared sensors are moving from small, single-function to large-scale, multi- The direction of functional development. Let's take a look at the classification of infrared sensors and what it works for.

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Infrared sensor classification

Infrared sensing systems are infrared-based measurement systems that can be divided into five categories according to their capabilities:

(1) Radiometers for radiation and spectroscopic measurements;

(2) A search and tracking system for searching and tracking infrared targets, determining their spatial position and tracking its movement;

(3) The thermal imaging system can produce a distribution image of the entire target infrared radiation;

(4) Infrared ranging and communication systems;

(5) Hybrid systems refer to combinations of two or more of the above types of systems.

Infrared sensor works

1. The target to be measured: set the infrared system according to its infrared radiation characteristics;

2.Atmospheric attenuation: Infrared radiation of the object under test will be affected by many substances and decay when it passes through the atmosphere;

3. Optical receiver: used to receive part of the infrared radiation and transmit it to the infrared sensor;

4. Radiation modulator: also known as modulating disc or chopper, used to modulate the form of infrared radiation modulation to provide the position information of the object to be measured, and filter out the interference signal;

5. Infrared detector: It is the core of the infrared system for detecting infrared radiation;

6. Detector chiller: used to cool the system to improve work efficiency;

7. Signal processing system: the signal amplification, filtering and other processing to extract the required information and the effective information is transmitted to the display device;

8. Display device: It is the terminal device of the infrared system, used for the display of effective information;

The above content is the classification and working principle of infrared sensors. Infrared sensor technology is one of the fastest-growing technologies in recent years. Infrared sensors have been widely used in many fields such as aerospace, astronomy, meteorology, military, industry, and civil use. Irreplaceable important role. With the development of science and technology, the market size of infrared sensors will be further expanded.