RFID radio frequency identification is a non-contact automatic identification technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not need manual intervention and can work in various harsh environments. RFID technology can identify high-speed moving objects and multiple electronic tags at the same time, which is fast and convenient to operate.

Classification of RFID tags

1. Active, passive, semi active and semi passive tags;

2. According to different frequencies, it can be divided into low frequency, high frequency, UHF and microwave electronic tags;

3. According to different packaging forms, it can be divided into credit card, linear, paper, glass tube, circular and special-purpose special-shaped labels.

What is the principle of RFID tag

Principle of RFID tag

After the RFID tag enters the magnetic field, it receives the RF signal sent by the interpreter and sends the product information (passive tag, passive tag or passive tag) stored in the chip with the energy obtained by the induced current, or actively sends a signal of a certain frequency (active tag, source tag or active tag); The interpreter reads and decodes the information and sends it to the central information system for relevant data processing.

Composition of RFID tag

RFID tag is mainly composed of the following three parts:

RFID chip: including logic control unit, memory and transceiver for decoding, decryption, error checking and other operation functions;

Antenna: used to receive RF data sent by the reader or transmit its own identification data;

Power source: active, provided by the power supply attached to the label; Passive, provided by radio waves sent by the reader.

Pin Bang RFID tag reading equipment

Pinbang UHF RFID series special handheld terminal is equipped with high-performance UHF reading and writing module, combined with unique antenna design, with high speed, data rate of 40kbps-640kbps and accurate data acquisition distance of 5m. The cluster identification technology can effectively reduce blind spots and Misreading problems when identifying and collecting data for a large number of single product labels, quickly and completely identify highly dense electronic labels without delaying any labels. It is widely used in retail, logistics, large-scale warehouse management, manufacturing, transportation, medical treatment, anti-counterfeiting and asset management.

Responsible editor: CT

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