A thermal imaging video camera is a camera that displays images by detecting the infrared radiation emitted from an object. Any object with a temperature will emit infrared radiation, and the thermal imager receives this radiation to display the temperature distribution on the surface of the measured object as a colorful image. It can identify abnormal temperatures based on small temperature differences, making it useful for maintenance purposes. It is also commonly known as an infrared thermal imager.
Firstly, infrared thermal imaging technology is a passive, non-contact detection technique with good concealment. Compared to infrared fill light products, it can avoid problems such as red exposure, making it ideal for covert monitoring.
Secondly, infrared radiation is the most widely present radiation in nature. While the atmosphere and smoke can absorb visible light and near-infrared radiation, they are transparent to infrared radiation with wavelengths of 3-5μm and 8-14μm. Therefore, by using these two wavelength windows, it is possible to observe the desired monitoring target clearly in completely dark nights or in harsh environments such as rain and snow. Thanks to this feature, infrared thermal imaging technology can truly achieve 24-hour monitoring.
Thirdly, it can perform intelligent video monitoring and identification on targets disguised and hidden from view. Normally, camouflage targets are designed to avoid visible light observation. For example, criminals often hide in grass and trees, where the harsh outdoor environment and visual illusions can lead to incorrect judgments and make them hard to detect. However, an infrared thermal imaging video camera passively receives the target’s own thermal radiation, and since the temperature and infrared radiation of a human or a vehicle hidden in grass and trees tend to be higher than those of vegetation, it can be automatically recognized. Moreover, a normal surveillance camera cannot see objects hidden under luminous surfaces, so it cannot effectively detect and identify stolen items that are buried. However, infrared thermal imaging video cameras, developed using infrared thermal imaging technology, can detect and identify these items. When a surface is disturbed, its thermal profile is also disrupted, and the thermal radiation of overturned soil is different from that of compacted soil. Therefore, using this function of the infrared thermal imaging video camera, buried stolen money and goods can be found.
Fourthly, infrared thermal imaging technology can intuitively display the temperature field on the surface of an object, unaffected by strong light, and is widely used. An infrared thermometer can only display the temperature value of a small area or a specific point on the surface of an object, while an infrared thermal imaging video camera can measure and display the temperature distribution of every point on the object's surface, visually displaying the temperature field on the object's surface in image form.
