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What is infrared thermal imaging?

1. What is infrared?

In nature, all objects with a temperature greater than absolute zero (-273°C) can radiate infrared rays. Together with visible light, ultraviolet rays, X-rays, gamma rays, cosmic rays and radio waves, they form a complete and continuous electromagnetic spectrum. Its wavelength is between 0.76μm and 1000μm, which is invisible light that is longer than red light.

3_副本

2. The characteristics of infrared

1) All objects in nature whose temperature is greater than absolute zero are emitting and absorbing infrared rays non-stop (day and night);

2) The intensity of infrared radiation can reflect the temperature. When the temperature of the same object increases, the infrared radiation will increase;

3) Infrared has a strong thermal effect, that is, infrared radiation is absorbed by the object and converted into heat energy, which increases the temperature of the object;

4) The infrared wavelength is longer, and it can easily penetrate clouds and smoke through diffraction.

3. Application of infrared band and infrared technology

Infrared wavelengths range from 0.76μm to 1000μm, and different wavelengths of infrared have different characteristics, so there are different applications, such as infrared thermal imaging, infrared remote control, infrared communication, infrared photography, infrared physiotherapy, and so on. (Don’t confuse them~)

4. What is infrared thermal imaging?

In layman’s terms, infrared thermal imaging transforms invisible infrared radiation into a visible thermal image and can reflect the temperature distribution state of the target surface. Different objects or even different parts of the same object have different radiation capabilities and their reflection of infrared rays. Using the radiation difference between the object and the background environment and the radiation difference of each part of the scene itself, the infrared thermal image can show the radiation fluctuation of each part of the scene, thereby showing the characteristics of the scene.

5. The working principle of infrared thermal imaging system

The infrared thermal imaging system is a passive non-contact detection and recognition infrared technology. It focuses the infrared radiation of the scene on the detector array through an infrared optical system that can transmit infrared radiation. Such radiation signals are converted into corresponding electrical signals, and then amplified and video processed to form a video image that can be observed by the naked eye.

6. Application fields of infrared thermal imaging

Measuring temperature and all-weather imaging are the two basic functions of infrared thermal imaging technology. Products developed based on these two are not only used in traditional fields such as military, electric power, industrial manufacturing, scientific research, and medical care, but are also about to enter with a new attitude Our daily life. It will become our life assistant, assisting the smart home system in temperature control, detecting electrical faults and troubleshooting pipeline leakage; it will become our security guard, ensuring the safety of driving at night, and improving the security capabilities of family homes; it will become ours An entertainment tool, you can have no fear of the dark during outdoor adventures, and experience extraordinary fun during aerial photography.


Post time: Dec-02-2020