Classifying rfid tag reads to increase confidence of tag inventory

A system comprising:

• a computer-readable medium storing instructions;
• and
• a processing device communicatively coupled to the computer-readable medium, wherein the processing device is configured to execute the instructions and thereby perform operations comprising:
• receiving a plurality of data frames, wherein:
• each data frame of the plurality of data frames comprises read data collected from a plurality of radio frequency identification (“RFID”) tags over an interval of time,
• the read data is collected from the plurality of RFID tags responding to receiving a radio frequency (“RF”) signal sent from an antenna in communication with a reader, and
• the read data comprises a plurality of received signal strength indicator (RSSI) values;
• for each data frame of the plurality of data frames:
• generating a linearized power value for each RSSI value of the plurality of RSSI values to form a set of linearized power values for the data frame;
• and
• for each RFID tag in the plurality of tags represented in the data frame:
• grouping the linearized power values found in the set of linearized power values for the RFID tag into a group of linearized power values;
• and
• summating the group of linearized power values to generate a summated power value for the RFID tag and the data frame;
• evaluating the summated power value for each data frame of the plurality of data frames for a particular RFID tag of the plurality of RFID tags to determine that the summated power value for each data frame over the plurality of data frames for the particular RFID tag meets a target predicate;
• and
• responsive to determining the summated power value for each data frame over the plurality of data frames for the particular RFID tag meets the target predicate, causing an action to be performed with respect to the particular RFID tag.

A computer-readable medium storing computer-executable instructions that, when executed by computing hardware, configure the computing hardware to perform operations comprising:

• receiving a first data frame and a second data frame, wherein:
• the first data frame comprises first read data collected from a radio frequency identification (“RFID”) tag over a first interval of time,
• the first read data is collected from the RFID tag responding to receiving a first radio frequency (“RF”) signal sent from a first antenna in communication with a reader,
• the first read data comprises a first plurality of received signal strength indicator (RSSI) values;
• the second data frame comprises second read data collected from the RFID tag over a second interval of time,
• the second read data is collected from the RFID tag responding to receiving a second RF signal sent from a second antenna in communication with the reader, and
• the second read data comprises a second plurality of RSSI values;
• generating a first linearized power value for each RSSI value of the first plurality of RSSI values to form a set of first linearized power values;
• summating the set of first linearized power values to generate a first summated power value;
• generating a second linearized power value for each RSSI value of the second plurality of RSSI values to form a set of second linearized power values;
• summating the set of second linearized power values to generate a second summated power value;
• evaluating the first summated power value, along with one or more other first summated power values generated from other first read data collected for the RFID tag at the first antenna, and the second summated power value, along with one or more other second summated power values generated from other second read data collected for the RFID tag at the second antenna, to determine that the first summated power value, along with the one or more other first summated power values, and the second summated power value, along with the one or more other second summated power values, meet a target predicate;
• and
• responsive to determining the first summated power value, along with the one or more other first summated power values, and the second summated power value, along with the one or more other second summated power values, meet the target predicate, causing an action to be performed with respect to the RFID tag.