ID tags with Frequency diversity
First Claim
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1. A system for asset tracking using RFID tags on assets, the system comprising:
- a plurality of RFID readers using different frequencies to read RFID tags; and
a plurality of assets, each having a RFID tag coupled thereto, wherein the RFID tag changes a response frequency as a function of a next RFID reader scheduled to track the corresponding asset.
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Abstract
A system tracks assets using RFID tags. A plurality of RFID readers use different frequencies to read RFID tags. A plurality of assets each have a RFID tag coupled to them. The RFID tag changes a response frequency as a function of a next RFID reader scheduled to track the corresponding asset. Assets may be components in an assembly line, patients in hospitals, containers, or other things that need to be tracked at different locations.
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Citations
21 Claims
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1. A system for asset tracking using RFID tags on assets, the system comprising:
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a plurality of RFID readers using different frequencies to read RFID tags; and
a plurality of assets, each having a RFID tag coupled thereto, wherein the RFID tag changes a response frequency as a function of a next RFID reader scheduled to track the corresponding asset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for asset tracking using RFID tags on assets, the system comprising:
a plurality of RFID readers using different frequencies to read RFID tags, wherein each RFID reader is positioned at a different one of N stages, and is responsive to RFID tags on assets to be tracked at the corresponding stage. - View Dependent Claims (13, 14, 15, 16, 17, 18)
- 19. A plurality of components to be assembled at different stages of an assembly line, each component having an RFID tag that operates at a frequency corresponding to the stage at which it is to be assembled, which is a frequency different from frequencies used at other stages.
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21. A method comprising:
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using a plurality of readers operating at different frequencies to track progress of assembly of components at various assembly stations; and
the readers responding to components that have tags that are preprogrammed with a frequency corresponding to the station where they are to be assembled, such tags providing component identification information to the reader at such station.
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Specification