System and method for position location in an enclosed environment

• US 20090009322A1
• Filed: 07/03/2008
• Published: 01/08/2009
• Est. Priority Date: 07/06/2007
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Ramirez, Alejandro, Schwingenschlogl, Christian
• Application Number:
  US12/216,390
• Publication Number:
  US 20090009322A1
• Time in Patent Office: Days
• US Class Current: 340/539.130
• CPC Class Codes: G01S 1/68 Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information
• CPC Class Codes: G08G 1/042 using inductive or magnetic detectors

Abstract

A system and method are disclosed for position location in an enclosed environment. In at least one embodiment, the system includes an enclosed environment with several distributed RFID transponders and an RFID processing unit for wireless communication with the RFID transponders via an electromagnetic coupling field. In each of the RFID transponders, an identifier assigned to the respective position of the RFID transponder in relation to the enclosed environment is stored. In at least one embodiment, the RFID transponders and the RFID processing unit are configured in such a way that if the RFID processing unit is positioned such that at least one RFID transponder is within a transmission range of the electromagnetic coupling field, the identifier of the RFID transponder is automatically transmitted to the RFID processing unit.

Claims

1. A system, comprising:

a plurality of RFID transponders distributed in an enclosed environment; and

an RFID processing unit for wireless communication with the RFID transponders via an electromagnetic coupling field, an identifier, assigned to a respective position of the RFID transponder in relation to the enclosed environment, being stored in each of the RFID transponders, and the RFID transponders and the RFID processing unit being configured such that if the RFID processing unit is positioned such that at least one RFID transponder is within a transmission range of the electromagnetic coupling field, the respective identifier of the at least one RFID transponder is automatically transmitted to the RFID processing unit.

2. The system as claimed in claim 1, wherein the RFID transponders and the RFID processing unit are configured such that the transmission range for data transmission between the RFID processing unit and the RFID transponders is between 1 and 10 m.

3. The system as claimed in claim 1, wherein the RFID transponders and the RFID processing unit are configured such that the transmission range for data transmission between the RFID processing unit and the RFID transponders is between 1 and 10 cm.

4. The system as claimed in claim 2, wherein the RFID transponders, as passive transponders, do not have an energy supply of their own.

5. The system as claimed in claim 2, wherein the RFID transponders, as active transponders, are provided with their own energy supply.

6. The system as claimed in claim 1, wherein the RFID processing unit is configured such that a position corresponding to the identifier most recently transmitted by an RFID transponder is displayable on a display of the RFID processing unit.

7. The system for position location as claimed in claim 1, wherein, in each of the RFID transponders, destination guidance data for destination guidance to destinations within the enclosed environment are stored, the RFID transponders and the RFID processing unit being configured such that if the RFID processing unit is positioned such that at least one RFID transponder is within the transmission range of the electromagnetic coupling field, the destination guidance data stored in the RFID transponder are transmitted automatically to the RFID processing unit.

8. The system as claimed in claim 7, wherein the RFID processing unit is configured such that, by user interaction, a destination within the enclosed environment is selectable, and wherein, on the basis of transmitted destination guidance data, destination guidance to the selected destination is provided by at least one of optical and acoustic signals on the RFID processing unit.

9. The system as claimed in claim 7, wherein the RFID processing unit is configured such that the destinations corresponding to the transmitted destination data are shown on a display of the RFID processing unit.

17. The system as claimed in claim 3, wherein the RFID transponders, as passive transponders, do not have an energy supply of their own.

18. The system for position location as claimed in claim 2, wherein, in each of the RFID transponders, destination guidance data for destination guidance to destinations within the enclosed environment are stored, the RFID transponders and the RFID processing unit being configured such that if the RFID processing unit is positioned such that at least one RFID transponder is within the transmission range of the electromagnetic coupling field, the destination guidance data stored in the RFID transponder are transmitted automatically to the RFID processing unit.

19. The system as claimed in claim 18, wherein the RFID processing unit is configured such that, by user interaction, a destination within the enclosed environment is selectable, and wherein, on the basis of transmitted destination guidance data, destination guidance to the selected destination is provided by at least one of optical and acoustic signals on the RFID processing unit.

20. The system for position location as claimed in claim 3, wherein, in each of the RFID transponders, destination guidance data for destination guidance to destinations within the enclosed environment are stored, the RFID transponders and the RFID processing unit being configured such that if the RFID processing unit is positioned such that at least one RFID transponder is within the transmission range of the electromagnetic coupling field, the destination guidance data stored in the RFID transponder are transmitted automatically to the RFID processing unit.

21. The system as claimed in claim 20, wherein the RFID processing unit is configured such that, by user interaction, a destination within the enclosed environment is selectable, and wherein, on the basis of transmitted destination guidance data, destination guidance to the selected destination is provided by at least one of optical and acoustic signals on the RFID processing unit.

10. A method for operation in an enclosed environment, equipped with several distributed RFID transponders, using an RFID processing unit for wireless communication with the RFID transponders via an electromagnetic coupling field, the method comprising:

automatically transmitting to the RFID processing unit, if the RFID processing unit is positioned such that at least one RFID transponder is within a transmission range of the electromagnetic coupling field, an identifier assigned to a position of the at least one RFID transponder with reference to the enclosed environment.

11. The method as claimed in claim 10, wherein a position corresponding to the identifier most recently transmitted by an RFID transponder is shown on a display of the RFID processing unit.

12. The method as claimed in claim 10, wherein, if the RFID processing unit is positioned such that at least one RFID transponder is within a transmission range of the electromagnetic coupling field, destination guidance data for destination guidance to destinations within the enclosed environment are automatically transmitted to the RFID processing unit.

13. The method as claimed in claim 12, wherein, via user interaction on the RFID processing unit, a destination within the enclosed environment is selected and, based on transmitted destination guidance data, destination guidance is provided to the selected destination by the RFID processing unit via at least one of optical and acoustic signals.

14. The method as claimed in claim 12, wherein destinations belonging to the transmitted destination data are shown on a display of the RFID processing unit.

15. A method, comprising:

using the method as claimed in claim 10 for position location within an enclosed environment.

16. A method, comprising:

using the method as claimed in claim 12 for destination guidance within an enclosed environment.

22. The method as claimed in claim 11, wherein, if the RFID processing unit is positioned such that at least one RFID transponder is within a transmission range of the electromagnetic coupling field, destination guidance data for destination guidance to destinations within the enclosed environment are automatically transmitted to the RFID processing unit.

23. The method as claimed in claim 22, wherein, via user interaction on the RFID processing unit, a destination within the enclosed environment is selected and, based on transmitted destination guidance data, destination guidance is provided to the selected destination by the RFID processing unit via at least one of optical and acoustic signals.

24. The method as claimed in claim 22, wherein destinations belonging to the transmitted destination data are shown on a display of the RFID processing unit.