What does RFID mean

The full name of RFID is Radio Frequency Identification, which is translated as Radio Frequency Identification technology in Chinese. It is an automatic identification technology that uses wireless radio frequency to achieve non-contact bidirectional data communication, and is also one of the core supporting technologies of the Internet of Things perception layer.

Core system composition

Electronic tag: composed of a chip and an antenna, it stores the unique identification or business data of the item to be identified, and is divided into three categories according to the power supply mode: active, passive, and semi-active.

Reader/writer: Transmits RF signals through an antenna to read or write tag information, and some models support concurrent recognition of multiple tags.

Antenna: It transmits radio frequency signals between tags and readers, and is a key component for achieving energy and data interaction.

Core technical features

Support non line of sight reading, no need to align and scan like barcodes, and can work in harsh environments such as high dust and high humidity.

It can recognize dozens to hundreds of tags in batches in seconds, and the reading distance in the ultra-high frequency band can reach several meters to more than ten meters.

Label data can be repeatedly erased and written, with a storage capacity much larger than traditional barcodes, and can also integrate encryption mechanisms to ensure data security.

Mainstream application scenarios

Currently, RFID has been widely implemented in multiple fields:

Logistics warehousing: Rapid inventory counting can improve inventory accuracy by more than 10%.

Transportation: scenarios such as toll collection without stopping on highways through ETC and seamless customs clearance.

Public services: access control system, ID card anti-counterfeiting, food safety traceability, medical asset tracking, etc.