Shulou(Shulou.com)06/02 Report--

Editor to share with you how the RFID system is formed, I hope you have something to gain after reading this article, let's discuss it together!

RFID system consists of tag, reader and antenna, respectively: 1, the tag is composed of coupling elements and chips, each electronic tag has a unique electronic code; 2, the reader is a device for reading or writing tag information, which can be designed to work in a variety of ways, such as handheld or fixed; 3, the antenna is used to transfer radio frequency signals between the tag and the reader.

I. definition of RFID technology

RFID technology, also known as electronic tag, is a short-distance wireless communication technology, which can identify specific targets and read and write relevant data through radio signals, without the need to establish mechanical or optical contact between the identification system and specific targets, so it is a non-contact automatic identification technology.

2. Three parts of RFID system

The RFID system is mainly composed of tags, readers and antennas. Generally, the data information collected by the reader is transmitted to the background system for processing.

(1) tags: tags are composed of coupling elements and chips, each electronic tag has a unique electronic code, attached to the object to identify the target object; each tag has a global unique ID number-UID (user identification), which is stored in ROM when making the tag chip and can not be modified, which has a very important impact on the development of the Internet of things.

(2) Reader: a reader is a device that reads or writes tag information, which can be designed to work in a variety of ways, such as hand-held or fixed. Label identification, reading and writing operations, in general, the collected data information will be transmitted to the background system, which will process the data information.

(3) Antenna: antenna is used to transmit radio frequency signal between tag and reader. The antenna in the radio frequency circuit is the bridge between the reader and the electronic tag. The radio frequency signal energy sent by the reader radiates to the space in the form of electromagnetic wave through the antenna. When the antenna of the electronic tag enters the space, it receives the electromagnetic wave energy, but can only receive a small part of it.

There are two ways of antenna coupling between the reader and the tag: one is inductive coupling, which is suitable for low-frequency RFID systems, and the other is backscattering coupling mode, which is suitable for ultra-high-frequency RFID system applications. Antenna can be regarded as the air interface between reader and electronic tag, and it is a very important part of RFID system.

After reading this article, I believe you have a certain understanding of "how the RFID system is composed". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!

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