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US 2021/0264121 A1Published application
Systems and Methods to Determine Motion Parameters using RFID Tags
AssigneeMicron Technology, Inc.
InventorJohn R. Tuttle
Life of this patent
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Abstract
Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.
Claims20
An apparatus, comprising:
- a modulator configured to generate a first signal modulated according to first data in the apparatus;
- a transceiver coupled to the modulator to transmit the first data via first radio frequency signals transmitted through an antenna according to the first signal;
- a circuit coupled to the transceiver to generate a second signal based on second radio frequency signals received via the transceiver through the antenna;
- and
- a controller configured to determine:
- an identity of a device based on second data modulated on the second radio frequency signals received in the transceiver, and
- at least one motion parameter of the device based on a frequency of the second signal.
4 more elements
A method, comprising:
- generating, by a modulator of an apparatus, a first signal modulated according to first data in the apparatus;
- transmitting, by a transceiver coupled to the modulator in the apparatus, the first data via first radio frequency signals transmitted through an antenna according to the first signal;
- generating, by a circuit coupled to the transceiver in the apparatus, a second signal based on second radio frequency signals received via the transceiver through the antenna;
- and
- determining, by the apparatus:
- an identity of a device based on second data modulated on the second radio frequency signals received in the transceiver, and
- at least one motion parameter of the device based on a frequency of the second signal.
4 more elements
A system, comprising:
- a device configured to receive commands via radio frequency signals and to provide identity data in response to the commands;
- and
- an apparatus, comprising:
- a modulator configured to generate a first signal modulated according to a command;
- a transceiver coupled to the modulator to transmit the command via first radio frequency signals transmitted through an antenna according to the first signal;
- a circuit coupled to the transceiver to generate a second signal based on second radio frequency signals received via the transceiver through the antenna;
- and
- a controller configured to determine:
- the identity data of the device based on modulations on the second radio frequency signals received in the transceiver, and
- at least one motion parameter of the device based on a frequency of the second signal.
7 more elements
Dependencies are inferred from the claim text.