You can measure your heat when you take a picture of your mobile phone.

It's a small holiday in the Mid -Autumn Festival. Where are you going to play? Presumably many people will choose to travel by high -speed rail. On the high -speed rail, you may find that train flight attendants will take a mobile phone to "take pictures" at the passengers every few hours.

Perhaps someone is very puzzled: Why do the flight attendants "sneak shots" me?

In fact, the flight attendant is not "sneak shot", but to measure the temperature of the passenger. The flight attendants are not holding ordinary mobile phones, but handheld terminals with infrared temperature testing functions. This not only reduces the risk of cross -infection brought by close -range contact, but also completes rapid temperature measurement without disturbing passengers.

With the advent of the post -epidemic era, masks and various disinfection products have become daily consumables in people's lives, and in various public places, people are no longer unfamiliar with various temperature measurement equipment.

These devices can detect the temperature of the measured objects in just a few seconds, which provides great convenience for our normalized monitoring prevention and control after the normalized monitoring prevention and control of the new crown pneumonia.

So, how does the infrared temperature measuring instrument quickly measure the temperature of the object? Today we will come and talk about this.

Receive electromagnetic waves that are radiated around the surrounding object

If you want to know the working principle of infrared temperature testing, there is a law that we must know, that is, the law of heat radiation.

German physicist Gustav Kirhoff proposed the law of heat radiation in 1859 to describe the relationship between the emission rate and absorption ratio of the object.

Simply summarize the law of thermal radiation, that is, all the temperatures in nature are higher than the absolute zero (about 273.15 degrees Celsius) in nature. The infrared band between 0.75 and 100 microns. As the temperature of the object rises, the total energy of radiation to the surrounding environment has gradually become more.

Using this principle, we can measure the surface temperature of the object by measuring the energy that the measured object radiates to the outside world.

When we measure the temperature with an infrared temperature meter, the electromagnetic waves that radiate the surrounding environment to the surrounding environment are accepted by the instrument. The optical devices in the system will gather this part of thermal radiation energy to the detector, convert the thermal signal into a electrical signal, and display the processed electrical signal in the form of temperature. It's worth it.

There are two main categories of non -contact infrared temperature measuring instruments

There are many types of infrared temperature measurement. At present, the common non -contact temperature measurement equipment on the market mainly include the two categories: forehead temperature guns and infrared thermal imaging passivation.

The forehead gun is a handheld infrared thermometer. To receive infrared radiation emitted from the human body through the internal sensor, the temperature on the surface of the human forehead can be displayed.

Infrared thermal imaging passivation is to analyze its temperature through software to monitor the heat map of the object. This method can monitor the temperature more clearly and intuitively.

At the beginning of the article, we said that the crew of the "taking pictures" on the high -speed rail is the infrared thermal imaging and the temperature instrument. It can reduce the contact between the tester and the subject. Convenient. However, the temperature monitoring of infrared thermal temperature is often the temperature of the object or human surface, so there may be a certain temperature measuring error.

There is also an online infrared thermometer, which often appears at the construction site. It can continue to monitor the temperature for 24 hours, and even work in harsh environments such as high temperature. By monitoring temperature, maintenance personnel can find potential problems in the factory at a lower cost, because any temperature abnormal phenomenon may point to a certain safety hazard. With this temperature measurement instrument, it can timely discover the problems at the construction site and correct it to reduce the possibility of safety accidents and reduce personnel and property losses.

With the above -mentioned infrared temperature measurement equipment, we can quickly get the temperature of the measured objects, which brings a lot of convenience to people's production and life.

Especially since the outbreak of the new crown pneumonia, almost all public places will set up temperature measurement equipment, such as the gate of the park, the entrance of the shopping mall supermarket, the subway security port, and the school gate. Test the temperature; at the school cafeteria, restaurant entrance, etc., scanned infrared thermal imaging instruments are often set. When you pass, your body temperature is quickly displayed on the instrument.

However, there were rumors that "infrared temperature measuring instruments would hurt the body." In this regard, Feng Luzhao, a researcher at the China Disease Prevention and Control Center, said that the infrared thermal measurement instrument is not to launch infrared rays to the human body, but to receive infrared thermal radiation from the human body, which is harmless to the body. Need to worry and doubt.

Therefore, when the Mid -Autumn Festival is a small holiday, we must cooperate with relevant staff, actively perform body temperature measurement and show health code, and contribute our own strength to the normalized protection of the epidemic.

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