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Motion-controlled arrangement for, and method of, locating targets with improved performance in a venue

  • US 10,049,244 B2
  • Filed: 05/25/2016
  • Issued: 08/14/2018
  • Est. Priority Date: 05/25/2016
  • Status: Active Grant
First Claim
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1. An arrangement for locating targets in a venue having a plurality of zones, the arrangement comprising:

  • a housing mounted overhead in the venue;

    a motion detecting system supported by the housing and including a plurality of motion detector assemblies having a corresponding plurality of fields of view looking in different directions away from the housing and extending over and covering the zones of the venue, the motion detector assemblies being operative for detecting levels of motion of the targets in the zones;

    a radio frequency (RF) identification (RFID) locationing system supported by the housing and operatively connected to the motion detecting system, the RFID locationing system being operative for reading the targets configured as RFID tags to locate the RFID tags in the zones in response to the motion levels detected by the motion detector assemblies; and

    an RFID controller operatively connected to the motion detecting system,wherein the RFID locationing system is operative for reading the RFID tags in a reading mode of operation with a set of reading parameters,wherein the RFID controller changes at least one of the reading parameters based on the motion levels detected by the motion detector assemblies, andwherein the reading parameters include a dwell time of an RF interrogation signal transmitted by the RFID locationing system, a transmit power at which the RF interrogation signal is transmitted, a transmit direction along which the RF interrogation signal is transmitted, and a firing order of a plurality of RF interrogation signals that are transmitted by the RFID locationing system.

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