Introduction to Radio Frequency Identification (RFID) System

Radio frequency identification (RFID) systems use radio frequency technology to identify objects in an open system environment. It is the specific application of related radio technology in the field of automatic identification (AEI).

Application of radio frequency identification (RFID) system technology

This technology uses wireless radio frequency for non-contact two-way communication to achieve the purpose of identifying and exchanging data. Compared with other identification technologies such as bar codes and magnetic stripes, RFID has the characteristics of easy control and non-contact automatic identification, and is suitable for many applications such as automatic control and harsh environment multi-target recognition, moving target recognition and so on. RFID technology has been used in the military field in the 1940s and began to be transferred to the commercial field in the 1970s. However, it has not been widely concerned because it is only used in very limited fields. With the maturity and development of computer information technology and ultra-large-scale integrated circuit technology, as well as the increasingly mature chip miniaturization packaging technology, RFID technology has gradually become the focus of attention and research. As a brand-new non-contact automatic identification technology, RFID has been widely used in the fields of enterprise supply chain management, animal identification, digital library management, traffic management and logistics management, and is listed as one of the top ten IT technologies in the 21st century.

The composition of radio frequency identification (RFID) system technology

The RFID system is composed of three parts: a radio frequency tag, a reader and a data management system. Among them, the radio frequency tag (Tag) is the real data carrier of the RFID system. Each tag has a unique code and is attached to the target object; the reader is responsible for reading or writing tag information. The communication between Tag and reader is realized by wireless communication. Many people have regarded RFID as an effective technology to achieve a pervasive computing environment. At present, RFID technology is widely used in the supply chain of enterprises. The US military also uses this technology to track supplies. In the United States, electronic passports with radio tags are already in use. RFID technology can be widely used in various industries such as coal mine, railway, post and telecommunications, electric power, municipal administration and so on. As an automatic identification technology, it is also an application technology with great development potential in the field of public safety. But to widely apply this technology, the cost of RFID tags must be controlled. The low-cost electronic tag resources are very limited, and the realization of the security mechanism is affected to a certain extent. The security problem of RFID system has become the focus of people's attention. Researching the security mechanism and implementation technology of low-cost RFID system has become the basic task of RFID security technology research, and has also become a key issue in promoting and applying RFID technology.