Recently, with the development of the new coronavirus incident, the prevention and control of the epidemic have become a matter of great concern to everyone. We can use sophisticated infrared thermal imaging cameras to screen heat-producing persons to achieve efficient temperature measurement. The following is the temperature measurement principle of the infrared thermal imaging cameras.

Long measuring distance and high sensitivity, effectively preventing operator infection

The detection range of an infrared temperature camera depends on the size of its lens, which can usually be divided into the standard lens, telephoto lens, and wide-angle lens. At the same time, the number of detectable targets is related to the lens size, infrared pixels, target object size, detection distance, and other factors.

Thermal sensitivity refers to the ability of an infrared thermal imaging camera to distinguish small temperature differences. When doing body temperature screening, high-precision thermal sensitivity helps to find people with mild fever.

Automatic large-area capture and temperature measurement to ensure efficient epidemic prevention and investigation

(1) When measuring the human body temperature, the infrared thermal imaging camera is a long-distance non-contact temperature measurement, without contacting the person to be tested, to prevent cross-infection of the person.

(2) Temperature sensor camera is to automatically captures the human body temperature. After installation, as long as the person under test passes through the field of view covered by the thermal imaging camera lens, the body temperature can be detected without affecting the traffic efficiency of the crowd.

(3) Infrared thermal imaging camera is a large-area temperature measurement. Compared with infrared thermometers and forehead guns, it can achieve high-efficiency temperature measurement, which is especially suitable for crowded places.

(4) Thermal imaging cameras can not only accurately measure temperature, but more importantly, they can perform rapid screening. Because in crowded places, it is first necessary to quickly find heat-generating personnel. Speed comes first and efficiency is the first priority. After finding suspicious persons, accurate temperature measurements can be done separately.

The infrared thermal imaging camera is used to screen body temperature, and it has a lot to do with its temperature measurement stability and consistency, because the body temperature screening continues for a long time, so that any abnormal body temperature will not be missed.

The stability of temperature measurement means that the results of the same temperature measured by the thermal temperature camera are basically the same when working for a long time. 

For example, a person (healthy, no fever) has a body surface temperature of 34.2℃, and an infrared camera with good temperature measurement stability measures every hour, and the results obtained are basically the same, and there will be no fluctuations. Case. 

The consistency of temperature measurement refers to the fact that the person appears in any position in the infrared thermal imaging cameras' screen, and the measured results are consistent, and the measured body temperature cannot be different due to the difference in location.

High data accuracy, adapt to extreme environments, ensure precise epidemic prevention

The temperature measurement principle of an infrared thermal imaging camera is to passively receive infrared radiation emitted by objects to the image and measure temperature, and objects above absolute zero (-273.15°C) can emit infrared radiation, so first of all, it is harmless to the human body.

The industry-standard accuracy of thermal imaging cameras is ±2°C or ±2% of the reading. This accuracy data is based on the results of the "Root Sum of Squares" (RSS) uncertainty analysis technique widely used by thermal imaging camera manufacturers. 

Because the measurement error of the infrared thermal imaging cameras comes from multiple variables in the temperature measurement formula, including target emissivity, reflected ambient temperature, transmittance, atmospheric temperature, thermal imaging cameras response value, calibrator (black body) temperature Accuracy, ambient temperature, ambient humidity, measuring distance.

The error values of the above variables are sometimes added in the same direction, making you farther and farther away from the correct value; sometimes, the error values are added in the opposite direction to cancel each other. Therefore, the use of "square sum rooting" is the most suitable method for calculating the total error value, and it has been used as the display data on the infrared camera data specification sheet.

Proper calibration for various environmental variables

When these variables are precisely controlled and calibrated, the temperature measurement accuracy of the thermal imaging cameras can be increased to within +-1 degrees Celsius. When human body temperature is screened in indoor places, through proper calibration and setting of appropriate environmental temperature, human skin emissivity, distance coefficient ratio, and other factors, the temperature measurement error of the infrared thermal imaging camera can be accurate to within 1 ℃.

The thermal imaging camera produced by ThermTec fully meets the industry standard accuracy and can guarantee precise epidemic prevention. If you want to know more about infrared cameras after reading the above content, you can get a comprehensive solution by contacting us.

As a professional thermal imaging cameras manufacturer, we have accumulated rich design and production experience in this field. We have a professional production team and strict quality inspection system, which can carry out strict quality control on all aspects of product production. At the same time, we will provide thoughtful one-stop service and develop effective solutions according to the diverse needs of customers. If you are interested in our thermal imaging cameras, please contact us immediately!