RFID Questions
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Hi All, Hoping someone with some RFID experience can help me gauge an understanding of it. Do the readers get the Co-Ords of the tag, or is the location based solely on which reader has picked up the tags signal? I know some companies say they use it for stock control, so just wanted to get an understanding of how that worked. Regards Tony
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Hi All, Hoping someone with some RFID experience can help me gauge an understanding of it. Do the readers get the Co-Ords of the tag, or is the location based solely on which reader has picked up the tags signal? I know some companies say they use it for stock control, so just wanted to get an understanding of how that worked. Regards Tony
Most RFID tags have no locator capabilities. The location is determined by knowing where the reader is, not the tag. Since the range of an RFID tag transmitter is very short (usually within 10 feet), the tags location is the location of the reader antenna. The tag passes through a field generated by the reader. This generates a small current in the tag which powers up and transmits its ID. The reader picks up that signal and reads the tag ID. That's the basics of how it works anyway.
Dave Kreskowiak Microsoft MVP - Visual Basic
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Most RFID tags have no locator capabilities. The location is determined by knowing where the reader is, not the tag. Since the range of an RFID tag transmitter is very short (usually within 10 feet), the tags location is the location of the reader antenna. The tag passes through a field generated by the reader. This generates a small current in the tag which powers up and transmits its ID. The reader picks up that signal and reads the tag ID. That's the basics of how it works anyway.
Dave Kreskowiak Microsoft MVP - Visual Basic
I like the "powers up" part. Kinda makes me think of a huge robot, whose eyes begin to glow as it slowly gets on its feet.... Or a plant after an accident of some kind. You know, with beeping, lights flashing about, strange smells of partly burned electronics...
Cheers, Sebastian -- Contra vim mortem non est medicamen in hortem.