The basic functions of infrared thermal imaging are: thermal monitoring, thermal diagnosis, thermal determination, thermal research.
Infrared thermal imaging camera through the optical electronic system will be the human body radiation of far-infrared light wave by filtering aggregation, modulation and photoelectric conversion, into electrical signals, and by the A/D conversion to digital quantities, and then by the multi-media image processing technology, in the form of pseudo-color heat map, showing the temperature field of the human body. A normal body state has a normal thermogram.
Abnormal body states have abnormal thermograms. Comparing the similarities and differences between the two, combined with clinical diagnosis, the nature and extent of the disease can be inferred.
Infrared camera structure
Infrared camera usually consists of optical components, focus / zoom components, internal non-uniformity correction components (hereinafter referred to as the internal correction components), imaging circuit components and infrared detector / chiller components.
Optical components are mainly composed of an infrared objective lens and structural components, the infrared objective lens is mainly to achieve the scene of the convergence of thermal radiation imaging, structural components are mainly used to support and protect the relevant group of components; focus / zoom components are mainly composed of servo mechanism and servo control circuit, to achieve the infrared objective lens focusing, field-of-view switching, etc.;
Internal calibration components are composed of the internal calibration mechanism and the internal correction control circuit, used to achieve the infrared thermal image of the internal non-uniformity correction components (hereinafter referred to as internal correction components).
The internal calibration component consists of an internal calibration mechanism and an internal calibration control circuit, which is used to realize the internal (non-uniform) calibration function of the infrared camera; the imaging circuit component usually consists of a detector interface board, a main processing board, a chiller drive board and a power supply board, etc., which collaborate to realize the functions of power-on control, signal acquisition, signal transmission, signal conversion, and interface communication.
The infrared detector/cooler assembly mainly converts the infrared radiation converged by the infrared objective lens transmission into electrical signals.
The above content reference Baidu Encyclopedia-Thermal Imaging Camera; Baidu Encyclopedia-Medical Infrared Thermal Imaging Camera