The working principle of infrared thermometer is that in nature, in addition to the light visible to the human eye (usually called visible light), there are ultraviolet, infrared and other non-visible light. Temperature in nature higher than absolute zero (-273 ° C) of any object, at any time to the outside world to radiate electromagnetic waves (infrared), so infrared is the existence of the most extensive electromagnetic waves in nature, and thermal infrared will not be absorbed by the atmospheric smoke cloud. With the rapid changes in science and technology, the use of infrared this characteristic, using the combination of applied electronics and computer software and infrared technology, used to detect and measure thermal radiation. The size of the surface of the object to radiate heat externally, heat-sensitive sensors to obtain different heat difference, through the processing of electronic technology and software technology, presenting a bright and dark or color difference between the different images, that is, we usually say infrared thermography; will be radiating the source of the surface heat through the thermal radiation algorithm algorithm conversion, the realization of the thermal image of the conversion between the temperature. Infrared thermometer is widely used in the military, medical, engineering and construction, instrument overhaul and many other fields.
Because of the principle of infrared thermometer and the advantages in practical use, perfectly suited for communities, campuses, hospitals, scenic spots, hotels, shopping malls, corporate offices and office buildings, public **** service establishments, construction sites, and other people with dense flow of people, the need to monitor the body temperature, the control of the complexity of the application of the scene. In terms of epidemic prevention and control, it effectively reduces the potential risks brought about by large-area contact with the human body during temperature measurement, shortens the time of human body temperature measurement, and improves the efficiency of temperature measurement. At the same time, centralized management provides real-time data support for screening and tracing suspected patients and mobile personnel, providing a strong security guarantee for the management of the above scenarios.