Popular Science Knowledge of Human Infrared Thermometer

- Sep 16, 2020-

Popular Science Knowledge of Human Infrared Thermometer

   The pneumonia epidemic caused by the new coronavirus has always been severe, and measuring body temperature has become a necessary means to prevent and control the epidemic. Human body infrared thermometers are widely used in traffic gates, hospitals, residential quarters, and enterprises and institutions with dense traffic due to their non-contact, high efficiency, and convenient use.

   Commonly used human infrared thermometers can be divided into two types: infrared thermal imaging rapid body temperature screening instrument and infrared thermometer. The infrared thermal imaging body temperature rapid screening instrument can monitor large areas in crowded public places, automatically track and alarm high temperature areas, and cooperate with visible light video to quickly find and track people with higher body temperatures. When the infrared thermal imaging body temperature rapid screening instrument integrates face recognition, mobile phone probes and other technologies, it can also grasp more information about people with higher body temperatures.

7-inch Face Recognition Body Temperature

7-inch Face Recognition Body Temperature


   1. Principle and measurement method

   The heat of the human body will be dissipated into the environment in the form of thermal radiation, and the human body infrared thermometer detects the thermal radiation of the human body through a built-in sensor, thereby achieving the purpose of measuring body temperature. The infrared thermal imaging body temperature rapid screening instrument uses infrared temperature measurement technology to perform non-contact and rapid measurement of the surface temperature of the human body. It is an instrument that warns when the measured temperature reaches or exceeds the preset warning temperature value.

7-inch Face Recognition Body Temperature

7-inch Face Recognition Body Temperature



   2. Precautions for use

   The advantages of infrared temperature measurement: First, it does not touch the object to be measured, and will not cause unnecessary infection when measuring body temperature; Second, it is fast, usually the measurement time is less than 1 second, generally not more than 2 seconds. Therefore, it is very suitable for the application in the prevention and detection of fever diseases. Generally, the accuracy of the infrared thermal imaging body temperature rapid screening instrument can reach ±0.3℃, and the infrared thermometer can reach ±0.2℃.

   For newly purchased human infrared thermometers, or when they are used frequently and when the measurement results are doubtful, the human infrared thermometer should be calibrated to determine its correction value, which can eliminate the system error of the thermometer as much as possible. The black body radiation source can be used to calibrate the infrared thermometer of the human body. Its effective emissivity and temperature control stability have higher requirements.