Mifare card application

The inductive IC card is also called a radio frequency card, which is composed of an IC chip and an induction antenna. It is packaged in a standard PVC card without any exposed parts of the chip and antenna. It is a new technology developed in the world in recent years.It successfully combines radio frequency identification technology and IC card technology, ending the problem of passive (no power in the card) and contactless.It is the field of electronic devices. A breakthrough. The card is close to the surface of the reader within a certain range (usually 5-10mm), and the data is read and written through the transmission of radio waves.

1. Read and write operations are performed between the inductive IC card and the reader via radio waves. The communication frequency between the two is 13.56MHZ. The inductive IC card itself is a passive card. When the reader reads and writes to the card, the signal sent by the reader is composed of two parts: one is the power signal. After the signal is received by the card, it is connected with its own L. / C generates a momentary energy to supply the chip for work. The other part is the instruction and data signal, which instructs the chip to complete the reading, modification, and storage of data, and returns a signal to the reader to complete a read and write operation. The reader is generally composed of a single-chip microcomputer, a dedicated intelligent module and an antenna, and is equipped with a communication interface with a PC, a printing port, an I / O port, etc., so as to be applied in different fields.

2. Internal partition of induction IC card

The interior of the proximity IC card is divided into two parts: the system area (CDF) and the user area (ADF).

System area: Used by card manufacturers and system developers and card issuers.

User area: used to store cardholder's related data information.

3. Compared with contact IC cards, non-contact cards have the following advantages:

⑴High reliability No mechanical contact between the inductive IC card and the reader, avoiding various failures due to contact read and write. For example:

Failure due to poor contact due to rough card insertion, non-card foreign objects insertion, dust or oil. In addition, there is no exposed chip on the surface of the non-contact card, so there is no need to worry about chip falling off, electrostatic breakdown, bending damage, etc., which is convenient for card printing It also improves the reliability of the card.

⑵Easy operation

Due to non-contact communication, the reader can operate on the card within the range of 10CM, so there is no need to insert and pull the card, which is very convenient for users. The inductive IC card has no directionality when used, and the card can swipe across the surface of the reader in any direction. , Can complete the operation, which greatly improves the speed of each use.

⑶ Anti-collision

The inductive IC card has a fast anti-collision mechanism, which can prevent data interference between the cards. Therefore, the reader can process multiple inductive IC cards at the same time. This improves the parallelism of the application and virtually improves the system work. Speed.

⑷ Can be suitable for multiple applications

The serial number of the inductive IC card is unique. The manufacturer has fixed this serial number before the product leaves the factory and cannot be changed. The two-way authentication mechanism is used between the inductive IC card and the reader, that is, the reader verifies the IC card The legality of the reader is verified by the IC card.

Before processing, the inductive IC card must perform three mutual authentications with the reader, and all data is encrypted during communication. In addition, each sector in the card has its own operation password and access conditions.

The characteristics of the memory structure of the contact card make it a multi-purpose card and can be used in different systems.Users can set different passwords and access conditions according to different applications.

⑸Good encryption performance

The inductive IC card consists of an IC chip and an inductive antenna, and is completely sealed in a standard PVC card without exposed parts. The reading and writing process of the inductive IC card usually completes the reading and writing operation by radio waves between the inductive IC card and the reader.

The inductive IC card itself is a passive body. When the reader performs read and write operations on the card, the signal sent by the reader is composed of two parts: one is the power signal. After the signal is received by the card, it is compared with its own L. / C generates resonance, which generates a momentary energy for the chip to work. The other part is to combine data signals to instruct the chip to complete data, modification, storage, etc., and return to the reader. The reading and writing system formed by the inductive IC card has greatly simplified both the hardware structure and the operation process. At the same time, with the advanced management software, the offline operation mode makes the data reading and writing process more For simplicity.

High temperature resistant inductive IC card

In order to meet the needs of practical applications, we continue to develop high-performance inductive IC cards that are suitable for special application environments. In terms of high temperature resistance, folding resistance and environmentally friendly materials, we use imported high temperature resistant materials to compound. Superior characteristics, it is not easy to deform under high temperature exposure of the vehicle head, and does not affect the functional characteristics. With our proximity card reader, it is widely used in highway toll collection and community management.

Common non-contact products are: Mifare 1S50 / Mifare 1S70

Miafre 1 s50 proximity IC card

◇ Core chip: Philips Mifare M1 S50

◇ Storage capacity: 8Kbit, 16 partitions, two passwords per partition

◇ Operating frequency: 13.56MHZ

◇ Communication speed: 106Kboud

◇ Reading and writing distance: 2.5-10CM

◇ Reading and writing time: 1-2MS

◇ Working temperature: -20 ℃ -85 ℃

◇ Erase times: 写 100,000 times

◇ Data retention: 10 years

◇ Specification: 0.87 × 85.5 × 54 / Non-standard card

◇ Packaging material: PVC, PET, 0.13 copper coins

◇ Packaging process: Ultrasonic automatic planting line / automatic bump welding

◇ Production standards: ISO 14443, ISO 10536

◇ Application: Enterprise / campus card, bus value card, highway toll, parking lot, community management, etc.

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