System and method for determining location of object using RFID tag
First Claim
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1. A system for determining a position of an object, the system comprising:
- a RFID tag attached to or embedded within the object, wherein the RFID tag includes;
a controller that transmits a plurality of ping signals that indicate a position of the object, andan energy harvester coupled to the controller, wherein the energy harvester harvests electro-magnetic energy from electro-magnetic fields, converts the RF energy to DC power, and supplies the DC power to the controller; and
a host device that;
performs a pairing operation with the RFID tag, sends, to the RFID tag, from different locations, a plurality of search signals,receives the plurality of ping signals from the RFID tag in response to the search signals, anddetermines the position of the object using the plurality of ping signals.
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Abstract
An RFID tag is attached to or embedded in an object and used for determining the position of the object. The RFID tag includes a controller and an energy harvester coupled to the controller. The controller provides object position information to a host device by sending ping signals to the host device. The energy harvester harvests RF energy from WLANs, converts the RF energy to DC power, and supplies the DC power to the RFID tag.
19 Citations
12 Claims
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1. A system for determining a position of an object, the system comprising:
a RFID tag attached to or embedded within the object, wherein the RFID tag includes; a controller that transmits a plurality of ping signals that indicate a position of the object, and an energy harvester coupled to the controller, wherein the energy harvester harvests electro-magnetic energy from electro-magnetic fields, converts the RF energy to DC power, and supplies the DC power to the controller; and a host device that; performs a pairing operation with the RFID tag, sends, to the RFID tag, from different locations, a plurality of search signals, receives the plurality of ping signals from the RFID tag in response to the search signals, and determines the position of the object using the plurality of ping signals. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for determining a position of an object, wherein the object includes an embedded a RFID tag, the method comprising:
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performing a pairing operation between a host device and the RFID tag; sending by the host device, from a plurality of locations, a plurality of search signals; receiving a plurality of ping signals from the RFID tag, and determining the position of the object based on the received ping signals. - View Dependent Claims (9, 10, 11, 12)
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Specification