RFID is the abbreviation of Radio Frequency Identification, namely radio frequency identification technology, commonly known as electronic tag.

RFID is a non-contact automatic identification technology. It automatically identifies target objects and obtains relevant data through RF signals. The identification work requires no manual intervention and can work in various harsh environments. RFID technology can identify high-speed moving objects and multiple tags at the same time, which is fast and convenient to operate.

Radio frequency identification (RFID) is a wireless communication technology, which can identify specific targets and read and write relevant data through wireless signals without establishing mechanical or optical contact between the identification system and specific targets.

What is the basic working principle of RFID technology?

The basic working principle of RFID technology is not complicated: after the tag enters the magnetic field, it receives the RF signal sent by the interpreter, and sends the product information stored in the chip (Passive Tag, passive tag or passive tag) with the energy obtained by the induced current, or actively sends the signal of a certain frequency (Active Tag, active tag or active tag); After the information is read and decoded by the interpreter, it is sent to the central information system for relevant data processing.

The most basic RFID system consists of three parts:

Tag: It is composed of coupling components and chips. Each tag has a unique electronic code and is attached to the object to identify the target object;

Reader: a device for reading (sometimes writing) label information, which can be designed as hand-held or fixed;

Antenna: transmit RF signal between tag and reader. A complete set of system also needs: data transmission and processing system.

What are the typical applications of RFID technology?

1. Quick scan

RFID identifier can identify and read several RFID tags at the same time.

2. Small size and diversified shape

RFID reading is not limited by size and shape, and it is not necessary to match the fixed size and printing quality of the paper for reading accuracy. In addition, RFID tags can be miniaturized and diversified to apply to different products.

3. Pollution resistance and durability

The carrier of traditional barcode is paper, so it is easy to be polluted, but RFID has strong resistance to water, oil, chemicals and other substances. In addition, because the barcode is attached to the plastic bag or outer packing carton, it is particularly vulnerable to damage; RFID label is used to store data in the chip, so it can avoid contamination.

4. Reusable

Today's barcode cannot be changed after it is printed. RFID tags can repeatedly add, modify, and delete the data stored in the RFID volume label to facilitate the update of information.

5. Penetrating and barrier free reading

When covered, RFID can penetrate nonmetallic or opaque materials such as paper, wood and plastic, and can conduct penetrating communication. Barcode scanners can read barcodes only when they are close to each other and are not obstructed by objects.

6. Large memory capacity of data

The capacity of one-dimensional barcode is 50Bytes. The maximum capacity of two-dimensional barcode can store 2 to 3000 characters. The maximum capacity of RFID is MegaBytes With the development of memory carriers, the data capacity is also expanding. In the future, the amount of data that items need to carry will become larger and larger, and the demand for the capacity that can be expanded by the volume label will also increase accordingly.

7. Security

As RFID carries electronic information, its data content can be protected by password, making its content not easy to be forged or altered.

What are the typical applications of RFID technology?

Logistics and Supply Management

Manufacturing and assembly

Air baggage handling

Mail/Express Package Handling

Document tracking/library management

Animal identification

Sport timing

Access control/electronic ticket

Automatic toll collection