System, method and kit for managing inventory

• US 7,737,858 B2
• Filed: 03/21/2007
• Issued: 06/15/2010
• Est. Priority Date: 03/21/2007
• Status: Active Grant

• Current Assignee: LogiTag Systems Ltd.
• Original Assignee: LogiTag Systems Ltd.
• Inventors: Matityaho, Shlomo
• Primary Examiner(s): TWEEL JR, JOHN ALEXANDER
• Application Number:
  US11/723,664
• Publication Number:
  US 20080231456A1
• Time in Patent Office: 1,182 Days
• Field of Search: 340/572.8, 340/572.7, 235/385, 705/22, 705/28
• US Class Current: 340/572.8
• CPC Class Codes: H01Q 1/2216 used in interrogator/reader equipment
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop

Abstract

A system, method and kit for managing RFID-tagged articles. The kit allows transforming a cabinet to an RFID-enabled cabinet. The transformation can be performed in the field. The RFID-enabled cabinet is fitted with a controller, communication means, one or more RFID readers, one or more antennae for reading RFID tags, and a multiplexer connecting the RFID reader and the antennae. Each antenna comprises a switch for activating and deactivating the antenna and a tuning board. No more than one antenna is activated at a given time thus avoiding interference between the different antennae. A central database can communicate with the RFID-enabled cabinets thus managing an inventory of RFID-enabled articles across multiple cabinets in multiple geographies.

Claims

1. A method for transforming a cabinet for storing RFID-tagged articles to an RFID-enabled cabinet, the method comprising the steps of:

(i) installing one or more RFID readers;

(ii) installing a controller;

(iii) adding communication means to said cabinet;

(iv) installing one or more antennae adapted to reading RFID tags of said RFID-tagged articles such that said one or more antennae cover the entire storage area of said RFID-enabled cabinet, and each antenna of said one or more antennae comprises a switch and a tuning board, the switch adapted to activating or deactivating the antenna, wherein said one or more antennae are initially detuned;

(v) activating each antenna of said one or more antennae periodically;

(vi) tuning the activated antenna;

(vii) reading nearby RFID tags; and

(viii) detuning said tuned antennae.

2. The method according to claim 1, wherein said RFID-enabled cabinet communicates with a central database system.

3. The method according to claim 1, wherein said RFID-enabled cabinet issues an alert when a predefined condition is met.

4. The method according to claim 3, wherein said predefined condition comprises:

(i) inventory level of an article has reached or is below a given value;

(ii) inventory levels of a given article are above a given value;

(iii) the expiration date of an article is within a given time period; and

(iv) the expiration date of an article has been reached.

5. The method according to claim 1, wherein said communications means are wireless communication means.

6. The method according to claim 1, wherein said RFID-enabled cabinet contains RFID-tagged articles from multiple suppliers.

7. A kit for transforming a cabinet to an RFID-enabled cabinet adapted for storing RFID-tagged articles, the kit comprising:

(i) a controller comprising communication means;

(ii) one or more RFID readers connected to said controller;

(iii) one or more antennae adapted to reading RFID tags of said RFID-tagged articles such that said one or more antennae cover the entire storage area of said RFID-enabled cabinet, and each antenna of said one or more antennae comprises a switch and a tuning board, the switch adapted to activating or deactivating the antenna, wherein all the antenna are initially detuned and each antenna is periodically activated, tuned, made to read nearby RFID tags, and then detuned again; and

(iv) at least one multiplexer connected to said one or more RFID readers and to said one or more antennae such that the at least one multiplexer can communicate, activate and deactivate each antenna individually.

8. The kit according to claim 7, wherein said communications means are wireless communication means.

9. The kit according to claim 7, wherein said RFID-enabled cabinet communicates with a central database system.

10. The kit according to claim 9, wherein said RFID-enabled cabinet issues an alert when a predefined condition is met.

11. The kit according to claim 10, wherein said predefined condition comprises:

(i) inventory level of an article has reached or is below a given value;

(ii) inventory levels of a given article are above a given value;

(iii) the expiration date of an article is within a given time period; and

(iv) the expiration date of an article has been reached.

12. The kit according to claim 7, wherein said RFID-enabled cabinet contains RFID-tagged articles from multiple suppliers.

13. A system for managing inventory of RFID-tagged articles from a plurality of vendors, said inventory being distributed across one or more geographical locations wherein each geographical location comprises one or more RFID-enabled cabinets, the system comprising:

a central database system;

(ii) a plurality of RFID-enabled cabinets for storing said RFID-tagged articles, said plurality of RFID-enabled cabinets being connected to the central database, wherein each RFID-enabled cabinet comprises;

(a) a controller;

(b) one or more RFID readers connected to said controller;

(c) one or more antennae adapted to reading RFID tags of said RFID-tagged articles such that said one or more antennae cover the entire storage area of the cabinet, and each antenna of said one or more antennae comprises a switch and a tuning board, the switch adapted to activating or deactivating the antenna, wherein all the antennae are initially detuned and each antenna is periodically activated, tuned, made to read nearby RFID tags, and then detuned again; and

(d) at least one multiplexer connected to said one or more RFID readers and to said one or more antennae such that the at least one multiplexer can communicate, activate and deactivate each antenna individually.

14. The system according to claim 13, wherein at least one RFID-enabled cabinet of said plurality of RFID-enabled cabinets communicates with the central database system using wireless communication means.

15. The system according to claim 13, wherein said cabinet issues an alert when a predefined condition is met.

16. The system according to claim 15, wherein said predefined condition includes:

inventory level of an article has reached or is below a given value;

inventory levels of a given article are above a given value;

the expiration date of an article is within a given time period; and

the expiration date of an article has been reached.

17. A field of RFID antennae adapted to read RFID tags of RFID-tagged articles, said field comprising a plurality of nearby RFID antennae, each RFID antenna comprising a switch and a tuning board, the switch adapted to activating or deactivating said RFID antenna, wherein all the antennae are initially detuned and each antenna is periodically activated, tuned, made to read nearby RFID tags, and then detuned again.