RADIO FREQUENCY LOCATOR SYSTEM

• US 20080084314A1
• Filed: 11/01/2005
• Published: 04/10/2008
• Est. Priority Date: 11/01/2005
• Status: Active Grant

• Current Assignee: Cobham Defense Electronic Systems Corporation (Cobham PLC)
• Original Assignee: M/A Com
• Inventors: Dipiazza, Gerald Charles
• Granted Patent: US 7,397,381 B2
• Time in Patent Office: Days
• US Class Current: 340/573.1
• CPC Class Codes: G01S 13/74 Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems

Abstract

A radio frequency locator system is provided that includes a plurality of locator elements configured to communicate using a radio frequency identification (RFID) communication system and at least one communication device configured to receive locator information from at least one of the plurality of locator elements. The radio frequency locator system further includes a user interface configured to display location information based on the received locator information and includes a plurality of user input fields configured to receive a user input to define a search criteria.

Claims

1. A radio frequency locator system comprising:

a plurality of locator elements configured to communicate using a radio frequency identification (RFID) communication system;

at least one communication device configured to receive locator information from at least one of the plurality of locator elements; and

a user interface configured to display location information based on the received locator information and including a plurality of user input fields configured to receive a user input to define a search criteria.

2. A radio frequency locator system in accordance with claim 1 wherein the displayed location information is configured to provide a visual indication of the location of the at least one communication device.

3. A radio frequency locator system in accordance with claim 1 wherein the displayed location information is configured to provide a visual indication of the movement of the at least one communication device.

4. A radio frequency locator system in accordance with claim 1 wherein the user interface includes a micro display for indicating the location of the at least one communication device on a map of a floor of a building.

5. A radio frequency locator system in accordance with claim 1 wherein the user interface includes a macro display for indicating the location of the at least one communication device on a map of a plurality of buildings.

6. A radio frequency locator system in accordance with claim 1 wherein at least one of the plurality of user input fields is configured to be self-populated with information based on a user input in another one of the plurality of user input fields.

7. A radio frequency locator system in accordance with claim 1 wherein the plurality of locator elements comprise one of active and passive RFID tags.

8. A radio frequency locator system in accordance with claim 1 wherein at least one of the plurality of locator elements is provided in a door frame.

9. A radio frequency locator system in accordance with claim 1 wherein at least one of the plurality of locator elements is provided in connection with a piece of furniture in a building.

10. A radio frequency locator system in accordance with claim 1 wherein at least one of the plurality of locator elements is provided at least under a carpet in a building or in a ceiling of the building.

11. A radio frequency locator system in accordance with claim 1 wherein the at least one communication device is configured to communicate the locator information to a control system.

12. A radio frequency locator system in accordance with claim 11 wherein the communication comprises a redundancy transmission scheme wherein a plurality of messages are transmitted.

13. A radio frequency locator system in accordance with claim 11 wherein the communication comprises a continuous reverse radio channel transmission.

14. A user interface for determining location information, the user interface comprising:

a plurality of user input fields for receiving user inputs defining at least one of a communication device for which location information is to be displayed and search criteria; and

at least one display for displaying a location of the communication device determined by an RFID transmission from at least one locator element.

15. A user interface in accordance with claim 14 wherein the plurality of user input fields include at least one of a device field and a building field and further comprising a plurality of information fields including at least one of a location field, a device tracking field, and a status field.

16. A user interface in accordance with claim 14 wherein the at least one display comprises a visual representation of a monitored area showing the location of the communication device thereon.

17. A user interface in accordance with claim 14 wherein the display comprises a device track showing movement of the communication device.

18. A user interface in accordance with claim 14 further comprising a contact device selection member activatable to contact the communication device.

19. A method of determining a location of a communication device, the method comprising:

receiving locator information from a plurality of locator elements configured to provide RFID communication;

determining a location of a communication device based on the locator information;

displaying the location of the communication device on a display based on the determined location; and

determining movement of the communication device based on the locator information and displaying a movement indication on the display.

20. (canceled)

21. A radio frequency locator system comprising:

a plurality of locator elements configured to communicate using a radio frequency identification (RFID) communication system;

at least one communication device configured to receive locator information from at least one of the plurality of locator elements; and

a control system configured to receive the locator information from the at least one communication device via a reverse radio channel including a plurality of intermediate local data hubs.

22. A radio frequency locator system in accordance with claim 21 wherein an intermediate local data hub is provided in connection with each of a plurality of locations.