The face recognition temperature measurement terminal plays an important role in epidemic prevention and control work. Through face recognition technology and body temperature detection technology, the face recognition temperature measurement terminal quickly monitors the temperature of all people entering and leaving, and registers personnel information and travel records . Let the epidemic prevention and control have data traceability, truly achieve data-based epidemic prevention and control, and comprehensively improve the efficiency of prevention and control.
The face recognition temperature measurement terminal detects the radiation of human body heat by infrared thermal imaging, and establishes a correlation between the radiation and the surface temperature of the human body. Since the temperature is a sensitive thing, the temperature detected by the face recognition temperature measurement terminal will be affected by various external environments during the process of receiving infrared radiation from the human body, so the face recognition temperature measurement terminal is in a relatively constant temperature environment indoors Work can detect body temperature more accurately.
However, there are many phenomena in the market where face recognition temperature measurement terminals are used outdoors, which is obviously a wrong way to use! Now let's talk about what external factors will affect thermal imaging:
Influence factor 1: sunshine
In the environment where the sun is shining outdoors, the sun light is composed of a large amount of infrared rays, ultraviolet rays and other complicated various visible and invisible lights. The face recognition temperature measurement terminal absorbs the infrared radiation radiated by the human body, and also absorbs the infrared radiation of the solar radiation, which directly affects the temperature measurement value.
Influence factor 2: rain
If the environment contains dust, smoke, fog, rain, snow and other solid liquid suspended particles, these substances not only have a strong attenuation and absorption of infrared radiation, but also it will cause the infrared radiation transmission direction to deviate and the energy will weaken, causing Scattering, resulting in thermal images can not be imaged.
Influence factor 3: wind
Due to the cooling effect of the wind, as the wind speed increases, the heat generated by the equipment will be accelerated and dissipated, and there will be a large error in the temperature measurement. The proximity of the measured object may also affect the temperature measurement result. For the human body, the body temperature is relatively constant, but the temperature of the human face will be affected by sweating or wind, so body temperature screening is recommended for a relatively stable indoor environment.
Influence factor 4: high temperature environment
In the hot summer high temperature environment, when the external ambient temperature is higher than the surface temperature of the human body, the face recognition temperature measurement terminal cannot accurately measure the human body temperature.
The "epidemic" war is still going on. The protection of the epidemic through artificial intelligence technology can greatly improve the efficiency and effectiveness of protection, but if you can't scientifically use the face recognition temperature measurement terminal, it will indeed be counterproductive. Therefore, it is recommended that you use the face recognition temperature measurement terminal correctly and work together in this smokeless war!