what is a security gate? security door also refers to metal detection door, which is specially used to detect whether metal articles are hidden on people. we have such products in common places such as airports and stations, which greatly improves the safety of these places. how does it work?
the security gate is a 3.5-4.95m sinusoidal oscillation generated by the crystal oscillator, which is divided into about 7.6k sinusoidal waves by the frequency divider, after power amplification by triode and coil, it is input to the door panel (zone 7) the large coil emits electromagnetic wave and is received by the coils in zone 1-6 in the door. after receiving, the received signal is compared with the reference signal. after finding the change, change the output level of the acquisition card. the cpu scans the data of the acquisition card in 6 locations within 280 milliseconds to judge the location of the metal and output the display. when the person or object passing through the security door has metal objects in case of quality, an alarm will be given to indicate that there are metal objects
is there radiation at the security gate
no, it must be false. as long as it is electronic products, it will produce radiation. the key is whether the radiation is large or not? the radiation of the security door is much smaller than that of the computer and lcd, so there is no need to worry about the radiation problem
security doors are widely used in many industries, including but not limited to
industry enterprises: electronic and electrical appliances, gold and silver jewelry, cigarettes, drugs, hardware products, precious metals (copper, aluminum, etc.) and their processing and other related industries.
government departments: public security bureau, procuratorate, court, prison, detention center, reeducation through labor center, drug rehabilitation center, etc
public places: gymnasiums, entertainment places, airports, railway stations, bus stations, ports, exhibition halls, museums, banks, etc.
