First, use differences.
1, IC cards are mainly used in public transportation, telecommunications, banking, parking lot management and other fields. The main functions include security authentication, electronic wallet, data storage and so on. Commonly used access cards and second-generation ID cards belong to the application of security authentication, and bank cards and subway cards use the function of e-wallet.
2. The ID card is mainly used for attendance, access control, one-card system, etc.
3.M 1 card is mainly used in automatic toll collection systems, such as buses, ferries and subways. It is also used in entrance guard, identity certificate, electronic wallet and so on.
4. The CPU card can be used in finance, insurance, traffic police, government industry and other fields. It has the characteristics of large user space, fast reading speed and multi-purpose support for one card, and has passed the authentication of the People's Bank of China and the State Trade and Secret Commission.
Second, the difference of radio frequency.
1, IC card: 13.56MHz, readable and writable, with wide coverage.
2. ID card: 125kHz, read-only card number (UID).
3.M 1 card: it is 13.56MHz, which is the common name of Mifare card and is a kind of IC card. Original chips are usually called NXP cards or Philips S50 cards. Compatible domestic chips include Fudan's M 1 card and Hua Hong's M 1 card.
4.CPU card: Yes 13.56MHz, with built-in system-on-chip COS. Compared with ordinary IC card, its security is greatly improved, and it is also a non-contact IC card.
Extended data:
The working principle of IC card, ID card and M 1 card;
The basic principle of 1.ic card is that the RF reader sends a set of electromagnetic waves with fixed frequency to the IC card, and there is an LC series resonant circuit in the card, the frequency of which is the same as that sent by the reader, so that under the excitation of electromagnetic waves, the LC resonant circuit generates * * * vibration, which charges the capacitor.
At the other end of the capacitor, an electronic pump with unidirectional conduction is connected to send the charge in the capacitor to another capacitor for storage. When the accumulated charge reaches 2V, this capacitor can be used as a power supply to provide working voltage for other circuits, and transmit data in the card or receive data from the card reader.
Second, the basic principle of ID card is that the system consists of ID card and background controller. The working process is as follows:
1. The ID card reader sends a carrier signal through the antenna, and the carrier frequency is 125KHZ(THRC 12).
2. After the ID card enters the work area of the card reader, the resonant circuit composed of inductance and capacitance in the card reader receives the carrier signal emitted by the card reader, and the RF interface module of the chip in the card generates power supply voltage, reset signal and system clock according to this signal, so that the chip is "activated".
3. The chip reading control module modulates the data in the memory onto the carrier wave after phase modulation coding, and sends it back to the card reader through 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. According to the legitimacy of the card number, the background computer makes corresponding processing and control for different applications.
3. The basic working principle of M 1 card is to send a set of electromagnetic waves with fixed frequency to the M1card, and there is an LC series resonant circuit in the card, the frequency of which is the same as that emitted by the reader. Under the excitation of electromagnetic waves, the LC resonant circuit produces * * * vibration, which makes the capacitor charged. At the other end of the capacitor, an electronic pump with unidirectional conduction is connected to transfer the charge in the capacitor.
When the accumulated charge reaches 2V, this capacitor can be used as a power supply to provide working voltage for other circuits, transmit data in the card or access the data of the card reader.
Baidu encyclopedia -IC card
Baidu encyclopedia-ID card
Baidu encyclopedia -M 1 card
Baidu encyclopedia -CPU card