The principle of magnetic card lock card details the working principle of science

What is the card lock principle? Magnetic card door lock working principle process introduction. The magnetic card lock is a type of electronic door lock that is widely used, and has a high usage rate in hotels, guesthouses, public baths and other occasions. Although the magnetic card lock is gradually replaced by the IC card lock, in many scenes, there is still a magnetic card lock. This article mainly describes the working principle of the reader magnetic card lock, introduces the work flow of the magnetic card lock, understands the internal operating mechanism, and more comprehensively. Learn about magnetic card door locks. 3cz Smart Lock China

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The magnetic card door lock is composed of an access controller, a card reader, a communication converter, access control attendance software and an electronic door lock. The card reading method is a non-contact card reading method. If the card holder quickly shakes the card near the card reader (5-15 cm), the card reader can sense the card and send the card information (card number) to the card reader. The host and the host check the legitimacy of the card and then determine whether to open the door. 3cz Smart Lock China

The magnetic card lock principle is that the card's electrical part is composed of an antenna and a control part CPU (in a PVC package). The card antenna has only a few sets of winding coils packaged in a card, and the card has a high speed (106 KB baud rate) Interface, 16 control unit readers sends a set of fixed frequency electromagnetic waves to the card. There is an LC series resonant circuit in the card. Its frequency is the same as the frequency emitted by the reader. Under the excitation of the electromagnetic wave, the LC resonant circuit generates resonance. , so that there is a charge in the capacitor. 3cz Smart Lock China

At the other end of the capacitor, a unidirectional conduction pump is connected to store the charge in the capacitor to another capacitor. When the accumulated charge reaches a certain voltage, the capacitor can be used as a power source to provide work for other circuits. Voltage, transmit the card data or access the reader data. 3cz Smart Lock China

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Through the above introduction, you can summarize the key points that will help ordinary users understand: 3cz smart lock China

1, magnetic card door lock is actually a passive RFID, using radio frequency identification technology. 3cz Smart Lock China

2. There is a coil inside the magnetic card, which can also be called an antenna. It is the energy source of the radio frequency chip. Through the radio frequency transmitting device above the door, a specific code is issued. The code of each room is different, so the corresponding room card is only We can open corresponding room. 3cz Smart Lock China

3, the antenna through the coupling, access to energy, and then the RF card received the code issued above the door, feedback back to the signal, the room door automatically open. 3cz Smart Lock China

Magnetic card door opening is mainly through the magnetic card to connect the power supply, thereby completing the expansion and contraction of the tongue, and ultimately the operation of the switch door, using the principle of radio frequency technology. 3cz Smart Lock China

In the magnetic card door locks for hotel applications, the magnetic cards are hierarchical, such as VIP cards (check-in cards), security cards, cleaning cards, manager cards, etc. The higher the level, the higher the natural rights, and the management with the highest management authority. In general, a magnetic card can open any room, and the magnetic card in the customer's hand can only open a designated room. 3cz Smart Lock China

The above content is published by the smart lock China Network Xiaobian, more locks knowledge, please pay attention to the relevant columns! 3cz Smart Lock China