System and method for adapting an FRID tag reader to its environment

• US 20060238304A1
• Filed: 12/13/2005
• Published: 10/26/2006
• Est. Priority Date: 04/21/2005
• Status: Abandoned Application

• Current Assignee: GSI Group Corporation (Novanta Inc.)
• Original Assignee: GSI Group Corporation (Novanta Inc.)
• Inventors: Loving, Sean
• Application Number:
  US11/301,587
• Publication Number:
  US 20060238304A1
• Time in Patent Office: Days
• US Class Current: 340/10.100
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer

Abstract

Systems and methods for configuring an RFID tag reader based upon one or more aspects of an environment of the RFID tag reader are disclosed. In one embodiment, a tag reader is deployed into an environment that includes at least one readable RFID tags capable of storing dynamic data, and a characteristic of the environment of the tag reader is identified. Based upon the identified characteristic, the configuration of the tag reader is adjusted. In variations, the tag reader is configurable based upon information received from at least one RFID tags.

Claims

1. A method for enhancing RFID tag reading performance comprising:

deploying an RFID tag reader into an environment that includes at least one RFID tag;

identifying a characteristic of the environment of the RFID tag reader;

adjusting a configuration of the RFID tag reader based upon the characteristic of the environment;

sending a signal to the at least one RFID tag; and

receiving information from the at least one RFID tag.

2. The method of claim 1, wherein sending the signal to the RFID tag includes using an antenna to send the signal, and wherein identifying the characteristic of the environment includes identifying a characteristic of the antenna, and wherein adjusting the configuration includes adjusting the signal based on the characteristic of an antenna.

3. The method of claim 2, wherein adjusting the signal includes adjusting at least one aspect of the signal, the aspect being selected from the group consisting of power of the signal and frequency of the signal.

4. The method of claim 2, wherein identifying the characteristic of the environment includes identifying a geographic operating region based on the characteristic of the antenna, and wherein adjusting the configuration includes adjusting the signal based on the identified geographic operating region.

5. The method of claim 2, wherein identifying the characteristic of the antenna includes identifying a frequency response of the antenna.

6. The method of claim 2, wherein identifying the characteristic of the antenna includes identifying a mechanical interface with the antenna.

7. The method of claim 6, wherein the mechanical interface of the antenna provides one of a plurality of potential electrical connections, wherein each of the plurality of potential electrical connections is associated with a corresponding one of a plurality of configurations for the RFID tag reader.

8. The method of claim 1, wherein identifying the characteristic of the environment includes identifying a characteristic of a device in which the RFID tag reader is embedded, and wherein adjusting the configuration includes adjusting the configuration of the RFID tag reader based upon the characteristic of the device.

9. The method of claim 8, wherein identifying the characteristic of the device includes sensing the characteristic of the device.

10. The method of claim 8, wherein identifying the characteristic of the device includes receiving a signal from the device, the signal identifying the device.

11. The method of claim 1, wherein identifying the characteristic of the environment includes identifying signal transmission conditions of the environment, wherein sending the signal to the RFID tag includes sending the signal using a channel selected from a table of channels, and wherein adjusting the configuration includes adjusting operation of the RFID tag reader by self-generating the table of channels.

12. The method of claim 11, wherein identifying the signal transmission conditions includes identifying signal transmission conditions selected from the group consisting of tag reader reliability, rate, interference levels in the channels and reception range.

13. The method of claim 1, wherein identifying the characteristic of the environment includes identifying a characteristic of radio hardware, and wherein adjusting the configuration includes selecting a radio driver based upon the radio hardware characteristic.

14. The method of claim 1, wherein identifying the characteristic of the environment includes receiving information from other RFID tag readers, and wherein adjusting the configuration includes setting operating parameters of the RFID tag reader based upon the information received from other RFID tag readers.

15. The method of claim 14, wherein setting operating parameters includes setting operating parameters selected from the group consisting of frequency, power, modulation type, antenna selection, reader scanning duty cycle, and tag protocol type.

16. The method of claim 1, wherein identifying the characteristic of the environment includes identifying characteristics of a host interface, wherein adjusting the configuration includes adjusting the configuration of the RFID tag reader based upon the characteristics of the host interface.

17. The method of claim 16, wherein identifying characteristics of the host interface includes identifying characteristics selected from the group consisting of a physical layer protocol of the host interface, a data link protocol for the host interface, a syntax utilized by the host interface and content of transported data.

18. The method of claim 1, wherein identifying the characteristic of the environment includes identifying a characteristic of a power source in the environment of the RFID tag reader, and wherein adjusting the configuration includes adjusting the configuration of the RFID tag reader based upon the characteristic of the power source.

19. The method of claim 18, wherein identifying the characteristic of the power source includes identifying at least one characteristic selected from the group consisting of a frequency of the power source, a voltage of the power source, a regulation characteristic of the power source, and a load capability of the power source.

20. The method of claim 1, wherein the RFID tag reader includes an analog front end.

21. The method of claim 1, wherein the RFID tag reader includes software and a processor configured to execute the software.