During the Spring Festival in 2020, the first level response to major public health emergencies will be launched in many parts of the world, and it is urgent to stop the further spread of the epidemic. In the process of the epidemic prevention and control, medical products such as ventilators, monitors, oxygen generators, negative pressure ambulances, which play a key role, have played an important role in the rescue of critically ill patients and the prevention of virus spread, which are inseparable from the support of sensor technology. Among them, the epidemic led to a surge in demand for infrared thermometer, and this infrared thermometer equipment, which has made an important contribution to the epidemic prevention work, is a typical application of sensor technology.

       We know that New Coronavirus is more cunning than the previous SARS virus. Its common symptoms are respiratory tract infections: fever, cough, shortness of breath, or dyspnea. In order to avoid the virus mutation caused by multiple cross infection, the source of infection must be cut off at the first time to prevent more large-scale transmission. From the current symptoms, although "fever" is not the most critical indicator of pneumonia, and even some cases have no fever, fever is still an important reference for primary hospitals and special public places to judge whether they are infected with the virus. Therefore, in the absence of a completely accurate and effective method, temperature screening is still necessary.

      At this time, the infrared thermometer equipment will play a very important role. Compared with other types of temperature measurement, the advantage of infrared temperature measurement is fast, intuitive and non-contact detection. In this kind of equipment, whether it is infrared thermometer, or ear temperature gun, forehead temperature gun and other infrared detection equipment, are inseparable from the basic thermal infrared sensor elements. In short, after the infrared sensor receives the energy from the object, it can convert the infrared energy into electrical signal through its optical system, and then convert it into temperature value.

       In general, in the face of severe epidemic prevention and control situation, it is very important for early screening to find suspected feverish people in the crowd, and further use all kinds of infrared sensor detection equipment for accurate temperature measurement and follow-up examination.