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Product Details
At present, low-frequency cards (id cards) are widely used. Our company can provide tk4100 thick white cards as well as tk4100 thin cards with printing. Our low-frequency printed thin cards meet the 0.76mm thickness standard of bank cards. The advanced manufacturing process is the Zui advantage of the low-frequency card of our factory, which is different from the low-frequency card of other factories. The bad card rate is far lower than that of the low-frequency card produced by other card factories. Performance is also far better than other low-frequency card, long service life.
chip: taiwan 4100 cob
Working frequency: 125khz
Induction distance: 8-20cm
Id thick card: 1.8mm thick, standard card size, Zui economical radio frequency ic card with id number, with a portable hole, can screen print logo text information;
Standard thin card: thickness 0.8mm, standard size, can be offset printing, screen printing, printing photos;
Non-standard thin card: thickness 1.05mm, standard size can be offset printing, screen printing, printing photos;
Typical applications: patrol system, attendance system, access control system, enterprise card system and other radio frequency identification fields
id card is thrc12/13 read-only contactless ic card, which is inductively powered by the card reader and reads out the unique card number stored in the chip eeprom. the card number is written once before the card is sealed and cannot be changed after the card is sealed. Passive and contact-free are the outstanding characteristics of the two Zui of the chip, and the RF interface circuit is the key core technology, which receives RF energy from the reader, generates power and clock for the chip, and uses phase shift keying and load amplitude modulation technology to realize the wireless communication between the card and the reader. Contactless id card has been widely used because of its advantages such as convenient, fast and reliable operation.
Key Features of ID Card
★Carrier frequency is 125khz(thrc12) or 13.56mhz(thrc13);
★The modulation mode of transmitting data from the card to the card reader is load amplitude modulation;
★In-card data coding adopts bpsk phase shift keying mode with strong anti-interference ability;
★The data transfer rate from the card to the card reader is 3.9kbps(thrc12) or 6.62kbps(thrc13);
★The data storage adopts eeprom, and the data storage time is more than 10 years;
★A total of 64 data storage capacity, including manufacturer, publisher and user code;
★The card number cannot be changed after being written before sealing to ensure the uniqueness and security of the card number;
★T hrc13 chip in addition to the standard card shape, but also according to the application needs to be packaged into chips and other shapes.
working principle of id card
The system consists of a card, a card reader and a background controller. The working process is as follows:
(1) The card reader sends the carrier signal through the antenna;
(2) After the card enters the working area of the card reader, the resonant circuit composed of the inductive coil and capacitor in the card receives the carrier signal transmitted by the card reader, and the RF interface module of the chip in the card generates the power supply voltage, reset signal and system clock from this signal, so that the chip "activates";
(3) The chip reading control module modulates the data in the memory on the carrier after phase modulation coding, and sends it back to the card reader by the antenna in the card;
(4) The card reader demodulates and decodes the received card echo signal and sends it to the background computer;
(5) The background computer makes corresponding processing and control for different applications according to the legitimacy of the card number.
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