REVERSE INFRASTRUCTURE LOCATION SYSTEM AND METHOD
First Claim
1. A system by which an object can be located within an area, the system comprising:
- a moveable radio frequency identification (RFID) tag reader associated with the object and in signaling contact with multiple RFID tags positioned at known locations within the area, wherein the RFID tag reader is adapted to interrogate at least some of the multiple RFID tags, to receive two or more unique identifiers from two or more responding RFID tags, to correlate the two or more unique identifiers with tag location information stored in memory to determine fixed positions for each of the two or more responding RFID tags, and to mathematically determine at least one location solution for the RFID tag reader within the area using the fixed positions.
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Accused Products
Abstract
Embodiments include methods and systems by which an object can be located within an area. The system includes a moveable radio frequency identification (RFID) tag reader and multiple RFID tags, which are positioned at known locations. The RFID tag reader is associated with the object, and is adapted to interrogate the RFID tags, to receive unique identifiers from responding RFID tags, to correlate the unique identifiers with tag location information stored in memory to determine fixed positions for the responding RFID tags, and to mathematically determine at least one location solution for the RFID tag reader using the fixed positions. A responding RFID tag is adapted to respond to an interrogation signal from the RFID tag reader by transmitting a unique identifier.
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Citations
20 Claims
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1. A system by which an object can be located within an area, the system comprising:
a moveable radio frequency identification (RFID) tag reader associated with the object and in signaling contact with multiple RFID tags positioned at known locations within the area, wherein the RFID tag reader is adapted to interrogate at least some of the multiple RFID tags, to receive two or more unique identifiers from two or more responding RFID tags, to correlate the two or more unique identifiers with tag location information stored in memory to determine fixed positions for each of the two or more responding RFID tags, and to mathematically determine at least one location solution for the RFID tag reader within the area using the fixed positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for determining the position of an object associated with a radio frequency identification (RFID) tag interrogator within an area having multiple RFID tags in known locations, the method comprising the steps of:
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interrogating multiple RFID tags by the RFID tag interrogator transmitting an interrogation signal; receiving information from two or more responding RFID tags of the multiple RFID tags, wherein such information includes two or more unique identifiers transmitted by the two or more responding RFID tags; correlating the two or more unique identifiers with tag location information stored in memory to determine fixed positions for each of the two or more responding RFID tags; and mathematically determining at least one location solution for the RFID tag interrogator within the area using the fixed positions. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification