RFID isolation tunnel with dynamic power indexing

• US 10,331,923 B2
• Filed: 02/08/2018
• Issued: 06/25/2019
• Est. Priority Date: 06/10/2015
• Status: Active Grant

• Current Assignee: Avery Dennison Retail Information Services LLC (Avery Dennison Corporation)
• Original Assignee: Avery Dennison Retail Information Services LLC (Avery Dennison Corporation)
• Inventors: Roth, Mark W.
• Primary Examiner(s): Blouin, Mark S
• Application Number:
  US15/892,025
• Publication Number:
  US 20180165488A1
• Time in Patent Office: 502 Days
• Field of Search: 340 101
• CPC Class Codes: G06K 7/10158 methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
• CPC Class Codes: G06K 7/10198 setting parameters for the interrogator, e.g. programming parameters and operating modes
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: G06K 7/10435 the interrogation device being positioned close to a conveyor belt or the like on which moving record carriers are passing conveying in accordance with bodily destination marks, see B65G47/46, sorting of objects carrying identity markings, see B07C5/34

Abstract

A read chamber device is disclosed for use within a radio frequency identification (RFID) scanning enclosure which provides a means of reading a plurality of cartons moving through the enclosure via a conveyor belt. The enclosure is positioned over a section of the conveyor belt, such that the plurality of cartons on the conveyor belt pass directly through the enclosure. The read chamber device is positioned centrally to the enclosure and projects a read zone via an antenna positioned in-line with the flow of the conveyor which allows the read chamber to read a large variety of inlays without changing the configuration settings of the device. The RFID scanning enclosure also utilizes dynamic power indexing (DPI) to combine parameter inputs to create a smarter reader that can anticipate changes. The reader is then manipulated in real-time to adapt to the needs of each carton and the tunnel scanning environment.

Claims

1. A method of utilizing an RFID scanning enclosure with dynamic power indexing, comprising:

varying parameters of the enclosure in real-time to handle a variety of carton sizes;

configuring a target carton which is about to be scanned;

adjusting the enclosure for each carton'"'"'s needs;

combining any number of input parameters prior to scanning the target carton; and

tuning the enclosure to needs and characteristics of each individual carton; and

wherein the input parameters can be any combination of following;

Carton ID, TID, RSSI, Read Count, Inlay type, Power Level, Reader On Time, Delay, and conveyor speed.

2. The method of claim 1, further comprising incorporating a predetermined set of input parameters into pre-processing steps for the enclosure to set a specific configuration for each target carton.

3. The method of claim 2, wherein the input parameters are incorporated via a micro controller which feeds an RFID reader.

4. The method of claim 2, wherein the input parameters are incorporated via GPIO functionality of the reader.

5. The method of claim 2, wherein the input parameters are incorporated via incorporating an upstream antenna/reader dedicated to this preprocessor task.

6. The method of claim 1, wherein software is developed to encompass the parameters.

7. The method of claim 1, wherein the method allows for a possibility of varying gaps between cartons.

8. The method of claim 1, wherein the enclosure is a cylinder.

9. The method of claim 1, wherein the enclosure has a tunnel with an opening.

10. The method of claim 9, wherein the opening has a capacity of 30″

.

11. The method of claim 1, wherein the enclosure has a read zone via at least one antenna.

12. The method of claim 11, wherein the at least one antenna has an axial ratio.

13. The method of claim 1, wherein the enclosure includes a resistive sheet absorber material.

14. The method of claim 13 wherein the material is mounded on an outboard surface of the enclosure.

15. The method of claim 1, wherein the enclosure relies on physics of an RF field and utilized isolation to prevent over-reads and stray-reads.