The working principle and process of industrial RFID readers.
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- Issue Time
- Jul 18,2024
The working principle and process of industrial RFID readers.
RFID is the abbreviation of Radio Frequency Identification, which is a type of automatic identification technology. Its principle is to conduct non-contact data communication between the reader (also known as the reader, reader, etc.) and the tag to achieve the purpose of identifying the target and exchanging data. It is considered to be one of the most promising information technologies in the 21st century.
1. Working principle:
The complete RFID system consists of three parts: reader, electronic tag and data management system.
The basic working principle of RFID technology: After the tag enters the reading range of the reader, it receives the radio frequency signal sent by the reader, and sends the product information stored in the chip with the energy obtained by the induced current (passive tag or passive tag), or the tag actively sends a signal of a certain frequency (active tag or active tag). After the reader reads and decodes the information, it is sent to the central information system for relevant data processing.
2. RFID system workflow:
The reader sends a radio frequency signal of a certain frequency through the transmitting antenna. When the radio frequency tag enters the working area of the transmitting antenna, an induction current is generated, and the radio frequency tag obtains energy and is activated; the radio frequency tag sends its own encoding and other data information through the tag's built-in transmitting antenna; the system receiving antenna receives the carrier signal sent from the radio frequency tag, which is transmitted to the reader through the antenna regulator. The reader demodulates and decodes the received signal and then sends it to the background main system for related processing; the main system determines the legitimacy of the tag based on logical operations, makes corresponding processing and control for different settings, and sends out command signals to control the action of the actuator.
