According to authoritative security inspection equipment experts, the security door principle is essentially a metal detector. It only extends the detection source to the entire door frame, enabling people to detect various parts of the body at the same time. The leak-free inspection ensures reliability and improves efficiency. Therefore, security doors are also called metal detection doors. At present, in airports, stations and other important places, it is repeatedly detected with security gates and hand-held metal detectors to further enhance reliability.
Pictured:
When the security door is working, when a person passes by, the detection device mounted on the door frame is oscillating by a crystal oscillator of the electronic component to generate a sine wave of 3.5-4.95M, and then the frequency is divided by the frequency divider to become a sine wave of about 7.6K, and then Transistors and inductors are used to amplify the power input panel. At this time, the total inductance will be emitted by electromagnetic waves, and the small inductors inside the door will receive signals. The frequency of the received signal is compared with the reference signal. If a change is found, the output level of the acquisition card will be changed. The integrated circuit scans the data collected by each small inductor in 300 milliseconds to determine the position of the metal and display the output. result. If there is no change, there will be no follow-up action.
The above is the working principle of security gates. It is simple to say, but in fact it is necessary to ensure its reliability. The technology is quite complicated. Only professional manufacturers have qualifications to produce, because the work of security gates is of great importance and is extremely important. Be sure to choose reliable vendors and brands.
The main function of security door:
1. Sound and light alarm system;
2, working frequency;
3, location display alarm function;
4. Strong anti-interference ability: Effectively avoid the interference of various electrical equipment working frequency;
5, magnetic field distribution;
6, signal processing technology.
Security door main technical indicators:
1, external power supply: 215V-230V50/60HZ
2, power consumption: 35W
3, working environment: -20 °C -45 °C
4, transport weight: about 95Kg
5, the weight of the whole machine: about 85kg
6. Battery: 1 9V battery;
7 Dimensions: (mm) 2200 (H) x 800 (W) x 720 (D)
8, channel size: (mm) 2050 (high) x760 (width) x 700 (deep)
With regard to the principle of work and the main function parameters of the security door, I believe that you already have a preliminary understanding, more detailed information can call our experts, and we will do our best to answer your questions.
The article is taken from : The wing wing security inspection net http://
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