Passive Low Frequency Inductive Tagging
First Claim
1. A system for detection and tracking of inanimate and animate objects, said system comprising:
- a) a low radio frequency tag carried by each of the objects, said tag comprising a tag communication inductive antenna operable at a first radio frequency not exceeding 1 megahertz, a transceiver operatively connected to said tag communication inductive antenna, said transceiver being operable to transmit and receive data signals at said first radio frequency, a data storage device operable to store data comprising identification data for identifying said tag, a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device, and an energy source for activating said transceiver and said microprocessor, said energy source comprising a tag energization inductive antenna operable to receive radio frequency energy from an ambient radio frequency field of a second radio frequency not exceeding 1 megahertz, said second radio frequency being substantially different than said first radio frequency;
b) a field communication inductive antenna disposed at an orientation and distance from each object that permit effective communication therewith at said first radio frequency;
c) a receiver in operative communication with said field communication inductive antenna, said receiver being operable to receive data signals at said first radio frequency from said low radio frequency tag;
d) a transmitter in operative communication with said field communication inductive antenna, said transmitter being operable to send data signals at said first radio frequency to said low frequency tag;
e) a reader data processor in operative communication with said receiver and said transmitter; and
f) a field energization inductive antenna operable to produce said ambient radio frequency field at the tag energization inductive antenna of said object.
1 Assignment
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Accused Products
Abstract
A system for detection and tracking of objects which carry low radio frequency tags that comprise an inductive antenna and transceiver operable at a first radio frequency below 1 megahertz, a transceiver operatively connected to that antenna, an ID data storage device, a microprocessor for handling data from the transceiver and data store, and a tag energization inductive antenna which can receive radio frequency energy from an ambient radio frequency field of a second low radio frequency. The system includes a field communication inductive antenna disposed, preferably at a distance of several feet from each object, that permits effective communication therewith at the aforesaid first radio frequency, a data receiver, transmitter and reader data processor in operative communication with the field communication inductive antenna, and a field energization inductive antenna which can produce the ambient radio frequency field at the tag energization inductive antenna.
108 Citations
109 Claims
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1. A system for detection and tracking of inanimate and animate objects, said system comprising:
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a) a low radio frequency tag carried by each of the objects, said tag comprising a tag communication inductive antenna operable at a first radio frequency not exceeding 1 megahertz, a transceiver operatively connected to said tag communication inductive antenna, said transceiver being operable to transmit and receive data signals at said first radio frequency, a data storage device operable to store data comprising identification data for identifying said tag, a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device, and an energy source for activating said transceiver and said microprocessor, said energy source comprising a tag energization inductive antenna operable to receive radio frequency energy from an ambient radio frequency field of a second radio frequency not exceeding 1 megahertz, said second radio frequency being substantially different than said first radio frequency; b) a field communication inductive antenna disposed at an orientation and distance from each object that permit effective communication therewith at said first radio frequency; c) a receiver in operative communication with said field communication inductive antenna, said receiver being operable to receive data signals at said first radio frequency from said low radio frequency tag; d) a transmitter in operative communication with said field communication inductive antenna, said transmitter being operable to send data signals at said first radio frequency to said low frequency tag; e) a reader data processor in operative communication with said receiver and said transmitter; and f) a field energization inductive antenna operable to produce said ambient radio frequency field at the tag energization inductive antenna of said object. - View Dependent Claims (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, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method for detection and tracking of inanimate and animate objects, said method comprising the steps of:
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a) attaching a low radio frequency detection tag to each of the objects, each low radio frequency tag comprising a tag communication inductive antenna operable at a first radio frequency not exceeding 1 megahertz, a transceiver operatively connected to said tag communication inductive antenna, said transceiver being operable to transmit and receive data signals at said first radio frequency, a data storage device operable to store data comprising identification data for identifying said tag, a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device, and an energy source for activating said transceiver and said microprocessor, said energy source comprising a tag energization inductive antenna operable to receive radio frequency energy from an ambient radio frequency field of a second radio frequency, said second radio frequency being substantially different than said first radio frequency; b) storing, in said data storage device of each said low radio frequency tag attached to an object, object data relating to said object;
said objects being commingled in a repository, said repository being provided with at least one field communication inductive antenna operable at said first radio frequency, said field communication inductive antenna being disposed at an orientation and distance from each object that permit effective communication therewith at said first radio frequency;c) generating said ambient radio frequency field at the energization tag antenna of each object by radiating said second radio frequency from a field energization inductive antenna; d) reading the identification data and object data from the transceiver of said low radio frequency tag by interrogating all low radio frequency tags in said repository with radio frequency interrogation signals at said first radio frequency via said field communication inductive antenna; and e) transmitting the identification data and object data from each low radio frequency tag to a reader data processor to provide a tally of the objects in said repository. - View Dependent Claims (41, 42, 43, 44, 45, 46)
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47. A low radio frequency tag for detection and tracking of animate and inanimate objects, said low radio frequency tag comprising:
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a) a tag communication inductive antenna operable at a first radio frequency not exceeding 1 megahertz; b) a transceiver operatively connected to said tag communication inductive antenna, said transceiver being operable to transmit and receive data signals at said first radio frequency; c) a data storage device operable to store data comprising identification data for identifying said low radio frequency tag; d) a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device; and e) an energy source for activating said transceiver and said microprocessor, said energy source comprising a tag energization inductive antenna operable to receive radio frequency energy from an ambient radio frequency field of a second radio frequency not exceeding 1 megahertz, said second radio frequency being substantially different than said first radio frequency. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
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70. An integrated microelectronic device for use in a low radio frequency tag for detection and tracking of animate and inanimate objects, said low radio frequency tag comprising a tag communication inductive antenna operable at a first radio frequency not exceeding 1 megahertz, said low radio frequency tag further comprising a tag energization inductive antenna operable to receive radio frequency energy from an ambient radio frequency field of a second radio frequency not exceeding 1 megahertz, said second radio frequency being substantially different than said first radio frequency, said microelectronic device comprising:
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a) a transceiver for operative connection to said communication antenna, said transceiver being operable to transmit and receive data signals at said first radio frequency; b) a data storage device operable to store data comprising identification data for identifying said low radio frequency tag; c) a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device; and d) an energy source circuit for operative connection to said tag energization inductive antenna for activating said transceiver and said microprocessor. - View Dependent Claims (71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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88. A system for detection and tracking of animate and inanimate objects, said system comprising:
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a) a low radio frequency tag carried by each of the objects, said low radio frequency tag comprising; i) a tag communication inductive antenna operable at a low radio frequency not exceeding 1 megahertz; ii) a transceiver operatively connected to said tag communication inductive antenna, said transceiver being operable to transmit and receive data signals at said low radio frequency; iii) a data storage device operable to store data comprising identification data for identifying said low radio frequency tag; iv) a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device; and v) an energy source for activating said transceiver and said microprocessor; b) at least one field communication inductive antenna disposed at an orientation and within a distance from each object that permits effective communication therewith at said low radio frequency; c) a receiver in operative communication with said field communication inductive antenna, said receiver being operable to receive data signals from said low radio frequency tags; d) a transmitter in operative communication with said field communication inductive antenna, said transmitter being operable to send data signals to said low frequency tags; and e) a reader data processor in operative communication with said receiver and said transmitter. - View Dependent Claims (89, 90, 91, 92, 93, 94, 95, 96, 97, 98)
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99. A low radio frequency tag for detection and tracking of animate and inanimate objects, said low radio frequency tag comprising:
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a) a tag communication inductive antenna operable at a low radio frequency not exceeding 1 megahertz; b) a transceiver operatively connected to said tag communication inductive antenna, said transceiver being operable to transmit and receive data signals at said low radio frequency; c) a data storage device operable to store data comprising identification data for identifying said low radio frequency tag; d) a microprocessor operable to process data received from said transceiver and said data storage device and to send data to cause said transceiver to emit an identification signal based upon said identification data stored in said data storage device; and e) an energy source for activating said transceiver and said microprocessor. - View Dependent Claims (100, 101, 102, 103, 104, 105, 106, 107, 108, 109)
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Specification