Power conserving active RFID label
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United States of America Patent
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Mar 19, 2013
Grant Date -
Nov 5, 2009
app pub date -
May 5, 2008
filing date -
May 5, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus, including computer program products, for a power conserving active RFID label. A system for performing radio frequency (RF) communications includes a radio frequency identification (RFID) tag attached to one or more items to be tracked, the RFID tag configured to receive a request and a time interval indicating a time for determining a temperature and a battery voltage, and to adjust the time interval at a time of determining the temperature and the battery voltage if the detected voltage is less than a predetermined voltage, and an interrogator communicatively coupled to one or more antennas to transmit one or more requests to the RFID tag and to receive one or more responses, at least one response including a time, temperature and battery voltage.
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