Radio frequency tagging for indicia printing and product information
First Claim
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1. A method of detecting a level of a content in a vessel using an RFID tag:
- interrogating an RFID tag in close proximity to one side of the vessel using a reader in close proximity to an opposite side of the vessel;
interpreting a presence or absence of a reply signal received from the RFID tag to determine information returned from the RFID tag; and
determining that the level of the content in the vessel is above or below a predetermined level based on the information received from the RFID tag.
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Abstract
A method and apparatus for detecting a level of a content in a vessel using an RFID tag. In one embodiment, an RFID tag located on one side of the vessel opposite a side on which the reader is, is interrogated. A reply signal, if any, received from the RFID tag is interpreted to determine the information returned from the RFID tag. The level of the content in the vessel is determined based on the information received from the RFID tag.
23 Citations
20 Claims
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1. A method of detecting a level of a content in a vessel using an RFID tag:
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interrogating an RFID tag in close proximity to one side of the vessel using a reader in close proximity to an opposite side of the vessel;
interpreting a presence or absence of a reply signal received from the RFID tag to determine information returned from the RFID tag; and
determining that the level of the content in the vessel is above or below a predetermined level based on the information received from the RFID tag. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 12, 14, 15, 16, 20)
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9. A system for monitoring a level of a liquid in a vessel comprising:
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a RFID tag in close proximity to one side of the vessel;
a RFID reader located in close proximity to another side of the vessel, positioned to be able to interrogate the RFID tag; and
wherein as the level of the content of the vessel lowers, the RFID tag is exposed and can be interrogated by the reader to determine that the level of the liquid in the vessel is above or below a predetermined level. - View Dependent Claims (10, 11, 13, 17, 18, 19)
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Specification