RFID
COMPONENTS
An RFID system is made up of four fundamental components:
- one or more RFID labels, tags or transponders
- one RFID antenna
- a device for reading and writing data, Reader or Controller
- an information system for data management and transfer
RFID LABELS
The main element is the RFID label, Tag or Transponder, which consists of:
- a microchip that holds data in a memory
- an antenna,
- a physical support that wraps the chip and the antenna called “substrate” and which can be in Mylar, plastic film (PET, PVC, other), paper or other materials.
- Activated by an external device (fixed or portable) with which it establishes a dialogue via radio, the tag transmits its identification code and all the information it contains.
VM Vision distributes adhesive labels with incorporated UHF tag.
RFID ANTENNAS
The RFID antennas, managed by the reader, generate a magnetic field that activates the tag, thus starting the radio communication; the antennas, sometimes incorporated in the reader, can have linear or circular polarization, based on the reading conditions, the orientation of the tags and the environment in which the RFID operates and have different shapes and sizes based on the field they must optimize and the distances they need to reach.The greater the distances, the larger the size of the antennas.
VM Vision distributes circular and linear polarized antennas of the best brands on the market at absolutely competitive costs.
RFID READER
The reader is the component that performs the function of identifying, reading and writing the RFID tags and communicating their codes via the antennas.
The power of the reader, together with the connected antenna, determines the reading distance of the tag, which is divided into 4 types:
- Proximity: readings from 10 to 20-25 cm
- Vicinity: readings over a few dozen cm
- Mid Range: distance of about 1 m
- Long Range: a few meters
VM Vision distributes readers of the best brands on the market specific for each type of use.
