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RFID Interface Protocol

- Jan 26, 2018 -

RFID Interface Protocol

Air interface

The air interface communication protocol standard information exchange between reader and tag, the purpose is for interoperability between different manufacturers of production equipment. ISO / IEC has developed five kinds of frequency band air interface agreement, this kind of thought fully reflects the standard unity relativity, a standard is the common demand to the quite widespread application system, but not all application system needs, a group of standards can satisfy more A wide range of application needs.

ISO / IEC 18000-1 Information technology - Radio frequency identification based on item management - Reference structure and standardized parameter definitions. It standardizes the air interface communication protocol common read and writers and tags communication parameters table, the basic rules of intellectual property content. In this way, the standard corresponding to each frequency band does not need to repeat the same content.

ISO / IEC 18000-2 Information technology - Radio frequency identification based on single product management - Suitable for intermediate frequency 125 ~ 134KHz, which stipulates the physical interface for communication between tags and readers. The readers shall have the same functions as Type A (FDX) and Type B (HDX) tag communication capability; anti-collision methods that prescribe protocols and instructions plus multi-tag communication.

ISO / IEC 18000-3 Information Technology - Radio Frequency Identification Based on Item Management - Suitable for use in high frequency bands of 13.56 MHz, specifying physical interfaces between readers and tags, protocols and commands coupled with anti-collision methods. Collision avoidance agreement can be divided into two modes, and mode 1 is divided into two types of basic and extended protocols (no slot and no stop multi-transponder protocol and slot termination adaptive multi-responder to read the protocol) . Mode 2 uses time-frequency multiplexing FTDMA protocol, a total of eight channels, for a larger number of labels.

ISO / IEC 18000-4 Information Technology - Radio Frequency Identification Based on Item Management - Suitable for use in the microwave section 2.45 GHz, which specifies physical interfaces between readers and tags, protocols and commands plus anti-collision methods. The standard includes two modes, mode 1 is passive tags work is reader to talk about; mode 2 is the active label, the work is the label to talk about.

ISO / IEC 18000-6 Information Technology - Radio Frequency Identification Based on Single Product Management - Suitable for UHF bands of 860-960 MHz, providing physical interfaces between readers and tags, protocols and commands plus anti-collision methods. It contains TypeA, TypeB and TypeC three passive label interface protocol, the communication distance up to 10m. Type C, which was drafted by EPCglobal and approved in July 2006, has been greatly improved in terms of identification speed, read / write speed, data capacity, collision avoidance, information security, frequency band adaptability and interference immunity. Submitted to the V4.0 draft in 2006, it expands on features with ancillary power and sensor electronic tags, including tag data storage and interactive commands. Active tags with batteries can provide a wider range of readability and greater communication reliability, but larger and more expensive.

ISO / IEC 18000-7 for high frequency band 433.92 MHz, is an active electronic label. Provides physical interface between reader and tag, protocols and commands plus anti-collision methods. Active tag reading range, suitable for large fixed assets tracking.