RFID radio frequency identification technology is believed to be considered by many people as an application in access control systems. In fact, RFID identification is widely used. At present, RFID technology has been applied in many fields, such as personnel, transportation, retail, medical, automotive, weighing, sanitation and other fields. Although the RFID product is small, it has to be said that it is a "big stomach king." RFID technology and its application are in a period of rapid rise and are recognized by the industry as one of the most promising technologies of this century. Its development and application promotion will be a technological revolution in the automatic identification industry.
RFID radio frequency identification is a non-contact automatic identification technology. It automatically recognizes target objects and acquires relevant data through radio frequency signals. The identification work can work in various harsh environments without manual intervention. RFID technology can recognize high-speed moving objects and recognize multiple labels at the same time, which is quick and easy to operate.
1. Quick scan. The RFID recognizer can simultaneously recognize and read several RFID tags.
2. The size is small and the shape is diverse. RFID is not limited in size and shape for reading, and does not need to match the fixed size and print quality of the paper for reading accuracy. In addition, RFID tags can be developed into smaller and more diverse forms for use in different products.
3. Anti-pollution ability and durability. Traditional bar code carriers are paper and are therefore susceptible to contamination, but RFID is highly resistant to substances such as water, oil and chemicals. In addition, since the barcode is attached to a plastic bag or an outer carton, it is particularly susceptible to breakage; the RFID tag is to store data in the chip, so that it can be protected from fouling.
4. Can be reused. Nowadays, barcode printing cannot be changed after it is printed. RFID tags can repeatedly add, modify, and delete data stored in RFID tags to facilitate information update.
5. Penetrating and barrier-free reading. In the case of being covered, RFID can penetrate non-metallic or non-transparent materials such as paper, wood and plastic, and can communicate transparently. The barcode scanner must be able to read the barcode at close range without object blocking.
6. The data has a large memory capacity. The capacity of the one-dimensional barcode is 50 Bytes, the maximum capacity of the two-dimensional barcode can be stored from 2 to 3000 characters, and the maximum capacity of the RFID is MegaBytes. With the development of the memory carrier, the data capacity has also been expanding. The amount of information that will be carried in future items will increase, and the demand for capacity expansion of the volume label will increase accordingly.
7. Security. Since RFID carries electronic information, its data content can be protected by passwords, making its content difficult to be forged and altered.
Principles of RFID technology
In recent years, RFID has attracted attention due to its long-distance reading and high storage capacity. RFID technology can not only greatly improve the efficiency of goods and information management, but also allow sales companies and manufacturing companies to interconnect, so as to receive feedback information more accurately, control demand information, and optimize the entire supply chain.
RFID is a flexible application technology that is easy to handle, simple and practical, and especially suitable for automated control. The identification work can be supported by a read-only mode or a read-write mode without manual intervention. It can work freely in a variety of harsh environments: short-range RF products are not afraid of harsh environments such as oil and dust. The many advantages of RFID technology and its flexible application characteristics are bringing a considerable application market. This technology will also have more and more close links with our lives.