RFID - Sensor System for Lateral Discrimination
First Claim
27. An RFID sensor system for reading at least one object having a programmable RFID device embedded therein, the at least one object being disposed in at least one of N-predetermined reading regions, N being an integer value greater than or equal to two, the system comprising:
- N-RFID reader arrays, each RFID reader array being disposed in a corresponding one of the N-predetermined reading regions, each Mth RFID reader array of the N-reader arrays including an Mth reader loop configured to read the at least one object disposed in the Mth region and an Mth jamming device disposed proximate the Mth reader loop, the Mth jamming device being configured to generate a jamming signal that prevents reader loops disposed in adjacent reading regions of the N-predetermined reading regions from reading the at least one object disposed in the Mth region, M being an integer value in a range of integers from 1 to N; and
a control system coupled to the N-RFID reader arrays, the control system being configured to energize each reader loop in accordance with a predetermined reading sequence and energize each jamming device in accordance with a predetermined jamming sequence.
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Abstract
The present invention is directed to a system for reading at least one object having a programmable RFID device embedded therein. The object is disposed in a predetermined reading region. The system includes a reader loop disposed in the predetermined reading region. The reader loop is configured to transmit a reader interrogation signal to the at least one object disposed in the predetermined reading region and receive an RFID signal from the at least one object in response to the reader interrogation signal. A jamming device is disposed proximate the reader loop. The jamming device is configured to generate a jamming signal that prevents an external reader device disposed outside the predetermined reading region from interrogating the at least one object disposed in the predetermined reading area.
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Citations
52 Claims
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27. An RFID sensor system for reading at least one object having a programmable RFID device embedded therein, the at least one object being disposed in at least one of N-predetermined reading regions, N being an integer value greater than or equal to two, the system comprising:
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N-RFID reader arrays, each RFID reader array being disposed in a corresponding one of the N-predetermined reading regions, each Mth RFID reader array of the N-reader arrays including an Mth reader loop configured to read the at least one object disposed in the Mth region and an Mth jamming device disposed proximate the Mth reader loop, the Mth jamming device being configured to generate a jamming signal that prevents reader loops disposed in adjacent reading regions of the N-predetermined reading regions from reading the at least one object disposed in the Mth region, M being an integer value in a range of integers from 1 to N; and
a control system coupled to the N-RFID reader arrays, the control system being configured to energize each reader loop in accordance with a predetermined reading sequence and energize each jamming device in accordance with a predetermined jamming sequence. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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47-1. The system of claim 27, wherein the Mth jamming device disposed in at least one of the N-RFID reader arrays includes a jamming coil disposed inside a reader loop.
Specification