RFID-integrated self-powered TTI
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United States of America Patent
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Aug 29, 2017
Grant Date -
Jul 20, 2017
app pub date -
Jun 13, 2016
filing date -
Jan 15, 2016
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Abstract
The present invention provides a radio frequency identification (RFID)-integrated self-powered time-temperature integrator (TTI), which comprises an RFID and a self-powered TTI which is attached to the exterior of a package of food to output an electric signal indicating a storage state of the food and supplies the electric signal as an operating power of the RFID, in which the electric signal output from the self-powered TTI is a voltage corresponding to a rate of a change in quality of the food accompanied, the quality is calculated by an integration value of time-voltage, and an integration algorithm uses an integrated value, obtained by adding the voltage measured every hour, as a quality variable of the food.
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