Systems and methods for detecting patterns in spatio-temporal data collected using an RFID system
First Claim
1. A method for monitoring a sensor cloud using an RFID system having a plurality of read zones, comprising:
- obtaining the spatio-temporal state of a plurality of sensors within the sensor cloud using the RFID system, where;
the spatio-temporal state of each sensor comprises sensor information, a time stamp, and a spatial location that is a representation of a single unique position in space in which the sensor is located, which is specified independently of the read zones of the RFID system;
the RFID system is configured to determine the spatial location of a sensor independently of the read zones of the RFID system using information signals received from the sensor when the sensor is illuminated and without relying upon receipt by the sensor of a signal generated by a device that does not form part of the RFID system, where the spatial location is a single unique position in space in which the sensor is located; and
the sensors are incapable of independently obtaining their own spatial location;
storing the spatio-temporal state of the plurality of sensors within a spatio-temporal database, wherein the stored spatio-temporal state of at least one sensor comprises a first spatial location within a particular read zone with a first time stamp and a different, second spatial location within the particular read zone with a different, second time stamp;
determining whether the spatio-temporal data satisfies at least one spatial condition based on the first and second spatial locations within the particular read zone; and
triggering at least one event based upon determining that the spatio-temporal data satisfies the at least one condition.
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Accused Products
Abstract
Systems and methods are described that collect spatio-temporal data using an RFID system that is capable of locating the spatial position of a sensor, which is typically unaware of its location. Such systems and methods can be contrasted with conventional RFID systems in that they are able to determine the location of sensors in space as opposed to with respect to read zones related to the underlying RFID reader infrastructure. One embodiment includes an RFID system having a plurality of read zones and configured to obtain the spatio-temporal state of sensors within a sensor cloud, where the spatio-temporal state of each sensor includes sensor information, a time stamp, and a spatial location specified independently of the read zones of the RFID system, a spatio-temporal database configured to store spatio-temporal state of a plurality of sensors over time, and an application server configured to trigger events based upon the detection of at least one condition by applying at least one filter to the data within the spatio-temporal database.
20 Citations
21 Claims
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1. A method for monitoring a sensor cloud using an RFID system having a plurality of read zones, comprising:
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obtaining the spatio-temporal state of a plurality of sensors within the sensor cloud using the RFID system, where; the spatio-temporal state of each sensor comprises sensor information, a time stamp, and a spatial location that is a representation of a single unique position in space in which the sensor is located, which is specified independently of the read zones of the RFID system; the RFID system is configured to determine the spatial location of a sensor independently of the read zones of the RFID system using information signals received from the sensor when the sensor is illuminated and without relying upon receipt by the sensor of a signal generated by a device that does not form part of the RFID system, where the spatial location is a single unique position in space in which the sensor is located; and the sensors are incapable of independently obtaining their own spatial location; storing the spatio-temporal state of the plurality of sensors within a spatio-temporal database, wherein the stored spatio-temporal state of at least one sensor comprises a first spatial location within a particular read zone with a first time stamp and a different, second spatial location within the particular read zone with a different, second time stamp; determining whether the spatio-temporal data satisfies at least one spatial condition based on the first and second spatial locations within the particular read zone; and triggering at least one event based upon determining that the spatio-temporal data satisfies the at least one condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20, 21)
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18. An RFID system, comprising:
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an RFID reader system having a plurality of read zones and configured to obtain the spatio-temporal state of sensors within a sensor cloud, where; the spatio-temporal state of each sensor comprises sensor information, a time stamp, and a spatial location that is a representation of a single unique position in space in which the sensor is located, which is specified independently of the read zones of the RFID reader system; the RFID system is configured to determine the spatial location of a sensor independently of the read zones of the RFID system using information signals received from the sensor when the sensor is illuminated and without relying upon receipt by the sensor of a signal generated by a device that does not form part of the RFID system, where the spatial location is a single unique position in space in which the sensor is located; and the sensors are incapable of independently obtaining their own spatial location; a spatio-temporal database configured to store spatio-temporal state of a plurality of sensors over time, wherein the stored spatio-temporal state of at least one sensor comprises a first spatial location within a particular read zone with a first time stamp and a different, second spatial location within the particular read zone with a different, second time stamp; and an application server configured to trigger events based upon determining that the spatio-temporal data within the spatio-temporal database satisfies at least one spatial condition based on the first and second spatial locations. - View Dependent Claims (19)
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Specification