US 2025/0077808 A1 · RFID READ ZONE MAPPING, TESTING, AND MONITORING USING A SILENT RFID TAG

Abstract

A communication device includes a central processing unit (CPU); a non-transitory memory; and an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to provide the communication device in an environment; receive a radio frequency (RF) signal from an RFID reader at a plurality of locations in the industrial environment, wherein the RF signal comprises a frequency in the cellular frequency range; determine a receive signal strength (RSS) of the RF signal at each of the plurality of locations; determine the RSS of the RF signal at each of the plurality of locations; and generate a map of an RFID read zone in the industrial environment based on the RSS of the RF signal at the plurality of locations.

Claims20

Dependent claims

A communication device for monitoring radio frequency identification (RFID) zones in an industrial environment that is suitable for deploying RFID tags, and comprising:

a central processing unit (CPU);
a non-transitory memory;
and
an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to:
receive, from an RFID reader, a radio frequency (RF) signal having a first RF power level at a plurality of locations of the communication device in the industrial environment, wherein the RF signal comprises a frequency in a cellular frequency range;
receive, from an RFID tag in the industrial environment, a radio frequency (RF) backscatter signal at a location of plurality of locations of the communication device in the industrial environment, wherein the backscatter signal comprises a frequency in the cellular frequency range;
determine a receive signal strength (RSS) of the RF signal at the location;
and
receive, from the RFID reader, a list of a plurality of RFID tags in an RFID read zone of the industrial environment;
determine whether the RFID tag is one of the plurality of RFID tags in the list based on the RF backscatter signal;
and
determine adjustment of the RF signal at the location based on a determination the RFID tag is not one of the plurality of RFID tags in the list based on the RF backscatter signal.

9 more elements

A communication device for tuning radio frequency identification (RFID) zones in an industrial environment that is suitable for deploying RFID tags, and comprising:

a central processing unit (CPU);
a non-transitory memory;
and
an RFID application stored on the non-transitory memory and comprising executable instructions that when executed by the CPU, cause the communication device to be configured to:
receive a first radio frequency (RF) signal having a first RF power level from an RFID reader at a plurality of locations of the communication device in the industrial environment;
determine a receive signal strength (RSS) of the RF signal at each of the plurality of locations;
obtain a map of RF power levels in an RFID read zone in the industrial environment based on the RSS of the RF signal at the plurality of locations, wherein the map of the RFID read zone comprises a subset of the RSS for the plurality of locations;
send the map of the RFID read zone to at least one of the RFID reader or an analysis server;
obtain, by the RFID reader, a second RF signal based on at least the map of the RF power levels in the RFID read zone, wherein the second RF signal is based on tuning the first RF signal;
and
receive, from the RFID reader, the second RF signal at one or more locations in the RFID read zone.

8 more elements

Dependencies are inferred from the claim text.

Rfid read zone mapping, testing, and monitoring using a silent rfid tag

Life of this patent

Rfid read zone mapping, testing, and monitoring using a silent rfid tag

Life of this patent

Abstract

Claims20