Security door manufacturer: Is the security door harmful to the human body?
The security door is a detection device for detecting the presence or absence of metal objects, also known as a
Metal Detector Door. As the name implies, the function of the security gate is to check whether the person passing the security gate carries metal objects. The working principle is simply to form a magnetic field transformation to cause electromagnetic induction of metal objects, thereby discovering metal objects. Some high-grade security doors can further sense the shape of metal objects to determine whether they are dangerous objects such as knives. In summary, the security gate is passively inspected by a magnetic field, rather than the traditional sense of illumination. To make an inappropriate metaphor, we can regard the security gate as a super simplified version of the nuclear magnetic machine. Having said that, I think everyone has already understood that the security door has put an end to the so-called radiation hazard in principle. Through the security door, even passing the security door many times in a day will not cause harm to the body.
The security door manufacturers are here, and we will popularize the radiation that people often mention. Radiation is divided into ionizing radiation and non-ionizing radiation. The former is high in energy and can cause rotation and power phenomena of atoms or molecules, such as nuclear radiation and X-ray radiation, which we must protect. The radiation sources encountered in our daily life, such as WIFI, mobile phones and sunlight, are non-ionizing radiation. Such radiation does not change the traits of the objects in principle, but the harmful effects of large doses of such radiation are still underway. Therefore, countries around the world still have corresponding restrictions on the generation of such radiation. China's safety standards are below 40 microwatts per square centimeter (μW/cm2), which is safe.
In daily life, the radiation we are exposed to, such as the mainstream wireless router radiation is 24-31 (μW / cm2), while the mainstream mobile phone standby time is 17-25 μW / cm2, the call surged to 93 μW / cm2. What we need to point out is that the distance of non-ionizing radiation is extremely high. The WIFI signal of the wireless router propagates 1 meter in the air, the radiation level will drop to 4.5-6.8 μW/cm2, and it will drop to 0.8μW/cm2 after 2 meters. , far below the national standard.
