Method of determining failure of an RFID label reader
First Claim
Patent Images
1. A method comprising:
- a) polling a reference radio frequency identification (RFID) label located adjacent to an RFID label reader by the RFID label reader;
b) attenuating return signals from the reference RFID label, including varying attenuation to simulate various distances between the reference RFID label and the RFID label reader; and
c) issuing an alert to a computer indicative of a failure of the RFID label reader if the RFID label reader fails to receive a response from the reference RFID label.
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Abstract
A method of determining failure of an RFID label reader.
4 Citations
31 Claims
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1. A method comprising:
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a) polling a reference radio frequency identification (RFID) label located adjacent to an RFID label reader by the RFID label reader; b) attenuating return signals from the reference RFID label, including varying attenuation to simulate various distances between the reference RFID label and the RFID label reader; and c) issuing an alert to a computer indicative of a failure of the RFID label reader if the RFID label reader fails to receive a response from the reference RFID label. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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a) polling a reference radio frequency identification (RFID) label located adjacent to an RFID label reader by the RFID label reader; b) attenuating return signals from the reference RFID label, including increasing attenuation to a threshold attenuation level at which the RFID label reader can no longer receive a reliable response from the reference RFID label, and comparing the threshold attenuation level to a previously obtained reference attenuation level; and c) issuing an alert to a computer indicative of a failure of the RFID label reader if the RFID label reader fails to receive a response from the reference RFID label. - View Dependent Claims (14)
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15. A system comprising:
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a radio frequency identification (RFID) label reader; and a reference RFID label located adjacent an RFID label reader; wherein the RFID label reader polls the reference RFID label, attenuates return signals from the reference RFID label, varies attenuation to simulate various distances between the reference RFID label and the RFID label reader, and issues an alert to a computer indicative of a failure of the RFID label reader if the RFID label reader fails to receive a response from the reference RFID label. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A system comprising:
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a radio frequency identification (RFID) label reader; and a reference RFID label located adjacent an RFID label reader; wherein the RFID label reader polls the reference RFID label, attenuates return signals from the reference RFID label, increases attenuation to a threshold attenuation level at which the RFID label reader can no longer receive a reliable response from the reference RFID label, compares the threshold attenuation level to a previously obtained reference attenuation level, and issues an alert to a computer indicative of a failure of the RFID label reader if the RFID label reader fails to receive a response from the reference RFID label. - View Dependent Claims (31)
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Specification