What is Radio Frequency Identification (RFID)?
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RFID employs Radio Frequency Communications to exchange data between a portable memory device and a host computer or PLC. An RFID system typically consists of a "Tag/Label/PCB" containing data storage, an Antenna to communicate with the Tag, and a Controller to manage the communication between the Antenna and the PC or PLC (the terms Reader or Reader/Writer are used when the Antenna and Controller are combined in one housing).
Importantly, the Tag/Label/PCB is commonly attached to a product carrier, tote or even the product itself, providing a remote database that travels with the product. |
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RFID can be split in to 3 Groups.
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| 1. UHF (
Ultra High Frequency) Series. |
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UHF systems feature long range, and high speed read/write rates. Small antennas and even smaller tags have proven this to be an effective frequency for tracking pallets through dock doors, as well as trucking and transportation applications. Industrial UHF applications have also begun to effectively be developed for tracking parts, product and carriers through production. For industrial applications involving significant environmental obstructions HF is a preferred frequency.
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| 2. HF (High Frequency) Series. |
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HF has the advantage over other frequencies of being able to read/write to a tag in the presence of water, and other obstructions. This ability has proved the HF Frequency ideal for rugged industrial environments.
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| 2. LF (Low Frequency) Series. |
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Tags can be pre programmed with specific IDs based on customer requirements. Once in place these systems have the reputation of needing very little maintenance and they consistently perform in industrial conditions.
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