Low cost, wide area RFID system
First Claim
1. A system comprising:
- at least one first sensor unit deployed in a first location proximate a region, wherein each sensor unit of the at least one first sensor unit is configured to detect a signal indicative of a specific person proximate to the sensor unit;
a memory configured to store data related to events;
a clock;
a processor configured to;
process the detected signals, wherein the processing comprises;
identifying an event related to presence of the specific person at the first location based on the detected signal, wherein the event has an event type indicating a type of movement of the specific person with respect to the region; and
storing in the memory information indicating the identified event, the stored information including;
the specific person, time information derived from the clock indicating when the identified event occurred and the event type of the event, wherein the storing comprises maintaining an event data set to indicate information that has previously been transmitted to the server and information to be transmitted to the server; and
a transmitter configured to transmit messages communicating events in the memory over a wide area network to a server.
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Accused Products
Abstract
Techniques for radio-frequency identification systems include sensor systems having a sensor unit and one or more sensors and a server. The sensor system includes one or more antennas at a location configured to receive signals from a tag proximate to an antenna and a processor configured to process tag detection signals based on the received signals. The processing may include selectively storing tag detection signals received from one or more antennas and identify an event related to the presence of a tag proximate to an antenna at the location. Sensor system may include a transmitter configured to transmit a message indicating the event over a network to a server. The server may be configured to process the message by analyzing a feature of the signals related to the event. The analysis may evaluate an adjustment of a configuration parameter used to operate an antenna. The configuration parameter may be updated by the server, and the server may transmit a message indicating the configuration parameter to the sensor system.
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Citations
20 Claims
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1. A system comprising:
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at least one first sensor unit deployed in a first location proximate a region, wherein each sensor unit of the at least one first sensor unit is configured to detect a signal indicative of a specific person proximate to the sensor unit; a memory configured to store data related to events; a clock; a processor configured to; process the detected signals, wherein the processing comprises; identifying an event related to presence of the specific person at the first location based on the detected signal, wherein the event has an event type indicating a type of movement of the specific person with respect to the region; and storing in the memory information indicating the identified event, the stored information including;
the specific person, time information derived from the clock indicating when the identified event occurred and the event type of the event, wherein the storing comprises maintaining an event data set to indicate information that has previously been transmitted to the server and information to be transmitted to the server; anda transmitter configured to transmit messages communicating events in the memory over a wide area network to a server. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. At least one non-transitory computer-readable medium storing computer-executable instructions that, when executed, perform a method comprising:
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receiving, over a wide area network, messages reporting information identified by a plurality of sensor units, wherein the information indicates an event identified by a sensor unit of the plurality of sensor units and comprises identification of a specific person, time information indicating when the identified event occurred and the event type of the event; and processing the messages, wherein the processing comprises; determining a time difference between an event indicated in a first message and a second message; and determining, based on the received messages, information to configure the plurality of sensor units to identify an event. - View Dependent Claims (14, 15, 16, 17)
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18. A method of operating a plurality of sensor units deployed at a plurality of locations proximate a region, wherein individual sensor units of the plurality of sensor units are configured to detect a signal indicative of a specific person proximate to the sensor unit, the method comprising:
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processing the detected signals, wherein the processing comprises; identifying an event related to presence of the specific person at the first location based on the detected signals from multiple sensor units of the plurality of sensor units, wherein the event has an event type indicating a type of movement of the specific person with respect to the region; and transmitting messages communicating events in the memory over a wide area network to a server, wherein the transmitted information comprises, in association with each of the communicated events, an indication of the specific person, time information indicating when the identified event occurred and the event type of the event; and at the server, processing the messages to determine for each of a plurality of specific persons, a duration of time that the specific person was within the region. - View Dependent Claims (19, 20)
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Specification