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Briefly describe the composition and characteristics of RFID.
RFID system consists of three parts: electronic tag, antenna and reader.

RFID characteristics

(a) data read and write (ReadWrite) function:

As long as RFIDReader is used, information can be directly read into the database, and multiple tags can be processed at a time without contact, and the status of logistics processing can be written into the tags for the next stage of logistics processing.

(2) Shapes that are easy to miniaturize and diversify:

RFID reading is not limited by size and shape, and the reading accuracy does not need to match the fixed size and printing quality of paper.

In addition, RFID electronic tags can be miniaturized and applied to different products.

Therefore, the production of products can be controlled more flexibly, especially in the application of production lines.

(3) Environmental resistance:

Once the paper is dirty, it can't be seen, but RFID is very anti-pollution to water, oil and drugs.

RFID can also read data in dark or dirty environment.

(4) Reusable:

Because RFID is electronic data and can be rewritten repeatedly, it can be recycled.

For example, passive RFID does not need batteries and maintenance.

(5) infiltration:

If RFID is coated with non-metallic or opaque materials, such as paper, wood and plastic, it can also be used for penetrating communication.

But if it's iron, it can't communicate.

(six) the storage capacity of data is large:

With the development of memory specifications, the data capacity will be expanded, the amount of data to be carried by articles in the future will increase, and the demand for expanded capacity of tags will also increase, so RFID will not be restricted.

(7) System security:

Transferring product data from the central computer to the workpiece will provide security for the system and greatly improve the security of the system.

(8) Data security:

The accuracy of data stored in RF tags is ensured by checking or cyclic redundancy checking.