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Contactless ID card technology introduction!

ID card that is THRC1213 read type contactless ID it through the reader induction power supply and read the card stored in the chip EEPROM only the card number, the card number is written once before sealing the card, after sealing the card can not be changed. Passive and contact-free are the two most prominent features of the chip. RF interface circuit is the key core technology. It receives RF energy from the card reader, generates power and clock for the chip, and uses phase shift keying system and loading amplitude modulation technology to realize wireless communication between card readers. Non-contact ID the card has the outstanding advantages of easy operation, fast and reliable, and has been widely used.

Contactless ID card technology introduction!

⒈ ID card main features

 carrier frequency of 125KHZ (THRC12) or 13.56MHZ (THRC13);

 card to the reader data transmission modulation method is loaded amplitude modulation.

 card data encoding using anti-interference anti-interference ability BPSK phase shift keying mode

 card to the reader data transmission rate of 3.9kbps (THRC12) or 6.62kbps (THRC13);

 use of data storage EEPROM, data retention of more than 10 years

 a total of 64 data storage capacity, including manufacturer, issuer and user codes.

 the card number cannot be changed before sealing the card, absolutely guaranteeing the uniqueness and security of the card number.

 T HRC in addition to the chip packaged into a standard card shape, but also according to the needs of the application can be packaged into a chip and other shapes.

Peal ID card working principle

The system consists of card, card reader and backend controller. The work flow is as follows

① Card reader sends out carrier signal through antenna.

②After the card enters the working area of the card reader, the resonant circuit composed of the inductor coil and capacitor in the card receives the carrier signal sent by the card reader, generates the supply voltage, reset signal and system clock, and activates the chip.

③ chip reads the data in the control module modulating memory on the carrier wave, and returns to the card reader through the antenna in the card;.

④The card reader demodulates the received card back signal, decodes it and sends it to the backend computer.

⑤ According to the legitimacy of the card number, the background computer to different applications for the corresponding processing and control.

The scope of application of the ID card

Compared with contact IC and card, non-contact ID does not need to plug and unplug the card, avoiding various failures caused by poor mechanical contact, with the outstanding advantages of easy operation, fast, reliable, long service life, etc., especially suitable for occasions with high traffic flow. THRC1213 non-contact ID card is mainly used for identification and site search control, such as access control, security, attendance and other fields, but also can be extended to exhibitions parks, hotels, restaurants and other public places for tickets, discount cards. As well as logistics, electronic tags, anti-counterfeit signs, disposable tickets and other production processes, postal parcels, air and rail transportation, product packaging, transportation and other fields. Although it is only a kind of reading card, it can be used in a certain range should be used for backstage computer control management, even involving fee management, such as canteen catering fee management. For specific applications, the cardholders personal data can be sent to the backstage computer to establish a database and configure the application software. When using, the reader can send the reading card number to the background computer, transfer the personal data of the cardholder from the database, and then operate according to the specific situation, so the application range is very wide.

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