Seven questions to get a simple understanding of RFID radio frequency identification

1. What are the components of RFID?

A: RFID consists of chips, antennas, readers, and middleware.

2. What are the advantages of RFID?

A: The biggest advantage is fast one-time multi-reading. If you have the following advantages compared to barcodes:

1. No need for light source, even read data through external materials

2. Long service life and can work in harsh environments.

3. Can be easily embedded or attached to products of different shape types

4. Read farther

5. Can write and store data, writing time is less than printing barcode

6. The content of the label can be changed dynamically

7. Ability to process multiple tags simultaneously

8. The data access of the tag is password protected and the security is higher.

9. It can track the items attached to the RFID tag in real time.

3. What is the difference between passive, semi-active and active RF systems?

A: Passive tags get the energy needed for work in the magnetic field generated by the reader. The cost is very low and has a long service life. It is smaller and lighter than the active tag, and the read/write distance is closer. It is also called passive. Labels. Active tags are battery-powered, have long read and write distances, and are bulky. They are more expensive than passive tags. They are also called active tags. Semi-active tags are between active tags and passive tags. It also has a battery itself, but it is usually in a dormant state, activates it when a reader sends a magnetic field to it, and then sends a message to the reader.

4. Can the RF tag be used for metal objects?

A: Yes, but it needs to be processed by a special packaging process to make a metal-proof label.

5. What is the difference between read-only and read-write tags?

A: The read-only tag is a tag with only one serial ID number in the chip and no data storage space. The reader can't change the tag information. The read/write tag has a certain storage space and can be read/written by the reader. Enter the label for some information.

6. How much information can the RF tag store?

A: Not necessarily. This needs to be determined based on the unreasonable capacity.

7. Can the RF tag be connected to the sensor?

A: Yes.