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Real-time location system (RTLS) that uses a combination of bed-and-bay-level event sensors and RSSI measurements to determine bay-location of tags

  • US 10,412,541 B2
  • Filed: 01/07/2019
  • Issued: 09/10/2019
  • Est. Priority Date: 05/31/2016
  • Status: Active Grant
First Claim
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1. A real-time location system (RTLS) having tags, bay-level event sensors, bridges, and a location server for providing people and asset-tag locating, comprising:

  • at least one tag which transmits a report of its motion status as sensed by its accelerometer;

    at least one bay-level event sensor, which transmits a report of motion events that occur in a bay to a location engine;

    at least one bridge for receiving reports from at least one tag and measuring at least one characteristic of the received transmissions, including received signal strength, and forwarding those reports to a central server, and which also receives transmissions of reports from at least one bay-level event sensor, which reports motion events that occur in a bay; and

    a location engine for determining bay-level location of the at least one tag, andwherein the at least one tag listens to the transmitted reports of motion events from the at least one bay-level event sensor, compares the reports of motion events to its own motion status; and

    transmits a comparison within its report of its motion status.

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