Radio frequency environment object monitoring system and methods of use
First Claim
1. A method for monitoring untagged objects in a target area, comprising the steps of:
- calibrating a three dimensional radio environment monitoring system for a target area by recording a baseline data set of changes to an RF environment fingerprint of the target area received by the three dimensional radio environment monitoring system as the target area is filled with objects;
each of a plurality of records of the baseline data set is averaged from multiple scans of the target area during a static object condition;
scanning the target area with the three dimensional radio environment monitoring system for a current RF environment fingerprint;
comparing the current RF environment fingerprint with the baseline data set by a rules engine; and
reporting an output of the rules engine.
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Abstract
A method and apparatus for monitoring untagged objects in a target area including calibrating a radio environment monitoring system including a rules engine and a baseline data set for a target area by recording a set of changes to the RF environment fingerprint of the target area received by the radio environment monitoring system as the target area is filled with objects. During system operation, scanning the target area with the radio environment monitoring system for a current RF environment fingerprint, comparing the current RF environment fingerprint with the baseline data set by a rules engine and reporting an output of the rules engine.
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Citations
16 Claims
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1. A method for monitoring untagged objects in a target area, comprising the steps of:
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calibrating a three dimensional radio environment monitoring system for a target area by recording a baseline data set of changes to an RF environment fingerprint of the target area received by the three dimensional radio environment monitoring system as the target area is filled with objects; each of a plurality of records of the baseline data set is averaged from multiple scans of the target area during a static object condition; scanning the target area with the three dimensional radio environment monitoring system for a current RF environment fingerprint; comparing the current RF environment fingerprint with the baseline data set by a rules engine; and reporting an output of the rules engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for monitoring untagged objects in a target area, comprising the steps of:
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calibrating a three dimensional radio environment monitoring system for a target area by recording a baseline data set of changes to an RF environment fingerprint of the target area received by the three dimensional radio environment monitoring system as the target area is filled with objects; scanning the target area with the three dimensional radio environment monitoring system for a current RF environment fingerprint; comparing the current RF environment fingerprint with the baseline data set by a rules engine; and reporting an output of the rules engine; wherein the appearance in the RF environment fingerprint of a registered reference RFID indicates a change to the target area access. - View Dependent Claims (13)
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14. A method for monitoring untagged objects in a target area, comprising the steps of:
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calibrating a three dimensional radio environment monitoring system for a target area by recording a baseline data set of changes to an RF environment fingerprint of the target area received by the three dimensional radio environment monitoring system as the target area is filled with objects; the baseline data set including changes to the RF environment fingerprint caused by filling the target area with multiple objects in multiple positions within the target area; scanning the target area with the three dimensional radio environment monitoring system for a current RF environment fingerprint; comparing the current RF environment fingerprint with the baseline data set by a rules engine; the rules engine including a line of sight parameter wherein a degradation of a signal response from a reference RFID in the target area indicates the presence of an object along a line of sight between the reference RFID and an antenna associated with the signal response; the rules engine including a dynamic pseudo emitter parameter wherein a pseudo emitter that appears and or disappears correlates to an object being positioned at a known location according to the baseline data set; the rules engine includes a static pseudo emitter parameter wherein a signal degradation of a static pseudo emitter correlates to an object being positioned at a known location according to the baseline data set; and reporting an output of the rules engine. - View Dependent Claims (15, 16)
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Specification