COMMUNICATING SIGNAL BETWEEN ROTATING ANTENNA AND PLURALITY OF STATIONARY ANTENNAE BASED ON DISPLACEMENT

• US 20180202312A1
• Filed: 01/17/2017
• Published: 07/19/2018
• Est. Priority Date: 01/17/2017
• Status: Active Grant

• Current Assignee: GE Infrastructure Technology, LLC (General Electric Company)
• Original Assignee: General Electric Company
• Inventors: SCHLEIF, Kurt Kramer, SHAW, Donald W.
• Granted Patent: US 10,180,079 B2
• Time in Patent Office: Days
• CPC Class Codes: F01D 21/003 Arrangements for testing or measuring for measuring vibrations G01H
• CPC Class Codes: F02C 3/00 Gas-turbine plants characterised by the use of combustion products as the working fluid generated by intermittent combustion F02C5/00
• CPC Class Codes: F02C 3/04 having a turbine driving a compressor power transmission arrangements F02C7/36; control of working fluid flow F02C9/16
• CPC Class Codes: F02C 7/00 Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants controlling F02C9/00
• CPC Class Codes: F02C 9/28 Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed F02C9/30 - F02C9/38, F02C9/44 take precedence
• CPC Class Codes: F05D 2220/32 in gas turbines
• CPC Class Codes: F05D 2240/60 Shafts
• CPC Class Codes: F05D 2270/80 Devices generating input signals, e.g. transducers, sensors, cameras or strain gauges
• CPC Class Codes: F05D 2270/808 Strain gauges; Load cells
• CPC Class Codes: G01M 15/14 Testing gas-turbine engines or jet-propulsion engines
• CPC Class Codes: H01Q 1/27 Adaptation for use in or on movable bodies H01Q1/08, H01Q1/12, H01Q1/18 take precedence
• CPC Class Codes: H04Q 2209/40 using a wireless architecture
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

Methods and systems for communicating a signal between a rotating antenna and a plurality of stationary antennae based on an axial displacement of the rotating antenna are provided. In one example, the method can include obtaining one or more measurements of an axial displacement of the rotating antenna from one or more axial displacement sensors. The method can further include determining a selected stationary antenna from the plurality of stationary antennae based at least in part on the measurements of an axial displacement of the rotating antenna. The method can further include activating the selected stationary antenna to communicate a signal with the rotating antenna. The method can further include communicating a signal between the rotating antenna and the selected stationary antenna.

Claims

1. A method for communicating a signal between a rotating antenna located on a shaft and a plurality of stationary antennae, the shaft defining an axial direction, the plurality of stationary antennae spaced along the axial direction, the method comprising:

obtaining, by one or more control devices, data indicative of an axial displacement of the rotating antenna from one or more axial displacement sensors;

determining, by the one or more control devices, a selected stationary antenna from the plurality of stationary antennae based at least in part on the data indicative of an axial displacement of the rotating antenna;

activating, by the one or more control devices, the selected stationary antenna to communicate with the rotating antenna, and

communicating a signal between the rotating antenna and the selected stationary antenna.

2. The method of claim 1, wherein the one or more axial displacement sensors comprise one or more displacement laser sensors.

3. The method of claim 1, wherein the one or more axial displacement sensors comprise one or more capacitive probes.

4. The method of claim 1, wherein the rotating antennae comprises an antenna located on a rotating shaft of a gas turbine.

5. The method of claim 4, wherein the axial displacement of the rotating antenna is due to thermal expansion of the rotating shaft.

6. The method of claim 1, wherein the signal communicated between the selected antenna and the rotating antenna comprises a signal associated with a thermocouple or strain gauge.

7. The method of claim 1, wherein the selected stationary antenna of the plurality of stationary antennae is closest in proximity to the rotating antenna.

8. The method of claim 1, wherein communicating a signal between the rotating antenna and the selected stationary antenna comprises sending a signal from the rotating antenna to the selected stationary antenna.

9. The method of claim 1, wherein communicating a signal between the rotating antenna and the selected stationary antenna comprises sending a signal from the selected stationary antenna to the rotating antenna.

10. The method of claim 1, wherein said activating the selected stationary antenna comprises switching from another stationary antenna in the plurality of stationary antenna to the selected stationary antenna for communication with the rotating antenna.

11. A system comprising:

a rotating antenna located on a rotating shaft, the rotating shaft defining an axial direction;

a plurality of stationary antennae spaced in the axial direction relative to the rotating antenna; and

a control system configured to perform operations, the operations comprising;

obtaining data indicative of an axial displacement of the rotating antenna from one or more axial displacement sensors;

determining a selected stationary antenna from the plurality of stationary antennae based at least in part on the data indicative of an axial displacement of the rotating antenna;

activating the selected stationary antenna to communicate with the rotating antenna; and

communicating a signal between the rotating antenna and the selected stationary antenna.

12. The system of claim 11, wherein the one or more axial displacement sensors comprise one or more displacement laser sensors.

13. The system of claim 11, wherein the one or more axial displacement sensors comprise one or more capacitive probes.

14. The system of claim 11, wherein the axial displacement of the rotating antenna is due to thermal expansion of the rotating shaft.

15. The system of claim 11, wherein the selected stationary antenna of the plurality of stationary antennae is closest in proximity to the rotating antenna.

16. A gas turbine comprising:

a compressor section, a combustion section, and a turbine section in series flow;

a rotating shaft, the rotating shaft defining an axial direction;

one or more axial displacement sensors;

a rotating antenna located on the rotating shaft of the gas turbine;

a plurality of stationary antennae spaced in the axial direction relative to the rotating antenna; and

a control system configured to perform operations, the operations comprising;

obtaining data indicative of an axial displacement of the rotating antenna from one or more axial displacement sensors;

determining a selected stationary antenna from the plurality of stationary antennae based at least in part on the data indicative of an axial displacement of the rotating antenna;

activating the selected stationary antenna to communicate with the rotating antenna; and

communicating a signal between the rotating antenna and the selected stationary antenna.

17. The gas turbine of claim 16, wherein the one or more axial displacement sensors comprise one or more displacement laser sensors.

18. The gas turbine of claim 16, wherein the one or more axial displacement sensors comprise one or more capacitive probes.

19. The gas turbine of claim 16, wherein the rotating antenna is configured to be axially displaced due to thermal expansion of the rotating shaft.

20. The gas turbine of claim 16, wherein the selected stationary antenna of the plurality of stationary antennae is closest in proximity to the rotating antenna.