US 2004/0111335 A1 · RFID space monitoring and asset inventory system

Abstract

Radio frequency tags having RFID elements are located in or on items situated in a given area of interest, and an antenna is automatically and virtually continuously moved around the proximity of the items to interrogate the presence of the items. When the RFID tags are interrogated by an RFID interrogation source, that source is then quickly able to gain information as to the presence or absence of the item, and the identity of the item, for comparison to a database. Thus, inventory can be conducted continuously, which is particularly useful in the sale of high priced items, (e.g., jewelry, automobiles) or voluminous items (e.g., library or apparel articles). The antenna assembly is automatically moved throughout all of the given area of interest, thereby a group of items may be read or scanned quickly in one operation using the mobile antenna. This enables a user to conduct continuous, unattended tracking and inventory of items. Thus, an operator can determine in real time what items are stored, sold, moved or displayed, etc., which would greatly simplify inventory assessments and reduce theft.

Claims10

Dependent claims

An RF identification space monitoring and asset inventory system for providing electronic surveillance of RF tagged articles, said system comprising:

at least one RFID tag assembly located within a predefined interrogation space comprising an antenna element and an integrated circuit,
an interrogation assembly, said assembly comprising:
an RFID reader, and
antenna means for actively communicating with said tag assembly via RF interrogation signals,
said interrogation assembly configured such that said reader and said antenna means are in electrical communication with one another;
antenna movement means for providing automated, three-dimensional movement of said interrogation assembly, about said predefined interrogation space,
and having motion components adapted and configured to provide three-dimensional, continual movement in a non-coupled sway motion along the x, y, and z axis, resulting in a continuous motion of said interrogation assembly, and
a processor adapted to electronically communicate with said RFID reader;
and
wherein said antenna element of said RFID tag assembly is configured to communicate with said antenna means of said interrogation assembly via RF response signals;
and
said motion components of said antenna movement means providing movement allowing constant two-way communication with said at least one RFID tag assembly via said RF interrogation signals in conjunction with said RF response signals.

9 more elements

An RF identification space monitoring and asset inventory system for providing electronic surveillance of RFID tagged articles, said system comprising:

at least one RFID tag assembly located within a predefined interrogation space comprising an antenna element and an integrated circuit,
an RFID reader, and
antenna means for actively communicating with said tag assembly via RF interrogation signals,
said reader and said antenna means are coupled for electrical communication with one another;
antenna movement means for providing automated three-dimensional movement of said antenna means, about said predefined interrogation space, and having motion components adapted and configured to provide three-dimensional, consistent movement in a non-coupled sway motion along the x, y, and z axis, resulting in a continuous motion of said interrogation assembly;
and
a processor adapted to electronically communicate with said RFID reader;
and
wherein said antenna element of said RFID tag assembly is configured to communicate with said antenna means via RF response signals;
and
said motion components of said antenna movement means providing movement allowing constant two-way communication with said at least one RFID tag assembly via said RF interrogation signals in conjunction with said RF response signals.

8 more elements

Dependencies are inferred from the claim text.

RFID space monitoring and asset inventory system

Life of this patent

RFID space monitoring and asset inventory system

Life of this patent

Abstract

Claims10