The basic working principle of RFID technology is not complex. After the label comes into the magnetic field, receiving the RF signal sent by reader, and sends out the product information by the energy stored in the chip obtained from virtue of induction current, or by the label active transmitting signals of a given frequency. The contact smart card is also working according to this principle. After the reader has read and decoded the information , it will be sent to the central information system for data processing.
Brief Introduction of RFID
RFID is also known as electronic label, radio frequency identification. It is a kind of communication technology through the radio signal recognition of specific goals and to read and write data, without the need for recognition system with specific target is established between the mechanical or optical contact. The smart card manufacturer will rely on this technology to produce the products. Commonly used with low frequency or high frequency, UHF, passive technology. RFID readers divided into movable and fixed kinds, and the current RFID technology has wide range of application, such as library, access control systems, food safety traceability. Initially in the area of technology, the transponder refers to the ability to transmit information reply messages electronic module. In recent years, due to the RFID technology is developing rapidly, the transponder has a new formulation and meaning, and it is called the smart tag or label. RFID electronic elevator certificate reader through the antenna and the RFID tag for wireless communication can be achieved on the label identification code and memory data read or write operation. The typical reader comprises a high frequency transmitter or receiver, a control unit and a reader antenna. RFID is a non-contact automatic identification technology, radio frequency signal through the automatic target recognition and access to relevant data, identifying the work without human intervention can work in a variety of harsh environment. RFID technology can identify the high-speed movement of objects and at the same time to identify a number of labels in fast and convenient operation. RFID is a simple wireless system with only the two basic components. The system is used for control, detection and tracking of objects. The system consists of an interrogator or reader and many transponder or label.
Typical applications of RFID Technology
Logistics and supply management, manufacturing and assembly, aviation baggage handling mail, express parcel processing a document tracking, library management Animal identity movement timing, rfid key chains, automatic road toll, metal name card, city card application in a cartoon, mobile phone application.
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