Is the infrared camera sold online (around 200 yuan) the same as the infrared thermal imaging camera (around 5000 yuan)?

Infrared camera and infrared thermal imaging camera are not the same concept.

1, infrared camera principle

The visible light that human eyes can see is red, orange, yellow, green, cyan, blue and purple according to the wavelength from long to short. An infrared filter is installed between the lens and the CCD to prevent infrared rays from entering the CCD, so that the CCD can only perceive visible light, and the images taken by the digital camera are consistent with those seen by our naked eyes.

There are two kinds of infrared rays: near infrared rays or short-wave infrared rays, the wavelength of which is 0.76 ~ 1.5 micron, and it goes deep into human tissues, about 5 ~10 mm; Far infrared rays or long-wave infrared rays, the wavelength of which is 1.5 ~ 400 microns, are mostly absorbed by superficial skin, and the depth of penetration into tissues is less than 2mm. Enhance the ability to capture images at night. So most users need an infrared camera to pursue a strong photo effect.

2. The working principle of thermal imaging camera

Thermal imaging camera is a thermal infrared imaging technology. Its core is the thermal imager, which is a kind of sensor that can detect tiny temperature difference and convert the temperature difference into real-time video images for display. But you can only see the hot corridors of people and things, but you can't see the true face of things. Any object with temperature will emit infrared rays, and the thermal imager is to receive the infrared rays emitted by the object, display the temperature distribution on the surface of the measured object through color pictures, and find out the abnormal points of temperature according to the slight difference of temperature.