1, the internal structure
RF reader to the IC card to send a fixed frequency of electromagnetic waves, the card has a LC series resonance circuit, the frequency of the same frequency with the reader emitted, so that in the electromagnetic wave excitation, the LC resonance circuit produces *** vibration, so that the capacitance has a charge.
At the other end of this charge, there is a single-conducting electronic pump connected to send the charge in the capacitor to another capacitor for storage, and when the accumulated charge reaches 2V, this capacitor can be used as a power supply to provide working voltage for other circuits to emit the data in the card or to accept the data from the reader.
2, the principle of operation
Radio frequency reader to the IC card sent a fixed frequency of electromagnetic waves, the card has a LC series resonance circuit, the frequency of its read-write with the same frequency of emission, so that in the electromagnetic wave excitation, the LC resonance circuit produces *** vibration, so that the capacitance has a charge.
At the other end of this capacitor, there is a single-conducting electronic pump connected to send the charge inside the capacitor to another capacitor for storage, and when the accumulated charge reaches 2V, this capacitor can be used as a power supply to provide working voltage for other circuits to emit the data in the card or to accept the data from the reader.
3, related applications
IC card development, research and application is a systematic project involving a variety of technical disciplines in the field of computers, communications, networks, software, card reading and writing equipment, application of machinery and other products. Therefore, the global IC card industry is rapidly developing in the competition of technology, market and application.
IC card has been one of the hot products of today's international electronic information industry, in addition to commercial, medical, insurance, transportation, energy, communications, security management, identification and other non-financial fields have been widely used, in the financial sector is also increasingly wide range of applications, the impact is very far-reaching.
Extended information:
ic card advantages:
1, large storage capacity. Magnetic card storage capacity of about 200 characters; IC card storage capacity depending on the model, small hundreds of characters, large millions of characters.
2, good security and confidentiality, not easy to be copied, the information on the IC card can be read at will, modify, erase, but all need a password.
3, CPU card with data processing capabilities. When exchanging data with the card reader, the data can be encrypted and decrypted to ensure that the exchange of data is accurate and reliable; magnetic cards do not have this function.
4, long service life, can be recharged repeatedly.
5, IC card has anti-magnetic, anti-static, anti-mechanical damage and anti-chemical damage and other capabilities, information retention years, read and write times in tens of thousands of times or more.
6, IC card can be widely used in finance, telecommunications, transportation, trade, social security, taxation, medical care, insurance, etc., covering almost all the public **** business field.
Baidu Encyclopedia-IC Card
Baidu Encyclopedia-IC Chip