Wireless power and data transfer for unmanned vehicles

• US 10,291,071 B2
• Filed: 01/19/2016
• Issued: 05/14/2019
• Est. Priority Date: 01/19/2016
• Status: Active Grant

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: the united states of america as represented by the secretary of the navy
• Inventors: Bana, Viktor S., Anderson, Gregory W., Liu, Wayne P., Rockway, John D.
• Primary Examiner(s): Houston, Adam D
• Application Number:
  US15/001,101
• Publication Number:
  US 20170207658A1
• Time in Patent Office: 1,211 Days
• Field of Search: 307104
• CPC Class Codes: H01F 27/42 Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils circuits for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output H02P13/00; impedance networks H03H
• CPC Class Codes: H02J 50/00 Circuit arrangements or systems for wireless supply or distribution of electric power
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment

Abstract

A system and method provide for wireless power and/or data transfer between devices, such as coils. A first device, operatively connected to an energy source, is positioned within a wireless transmission range of a second device, which may be operatively coupled to an unmanned vehicle. Power and/or data is wirelessly transferred to/from the energy source from/to the unmanned vehicle via the first device and the second device.

Claims

1. A method comprising the steps of:

positioning a first device and a second device within a wireless transmission range, wherein the second device is operatively connected to an unmanned vehicle, and wherein the first device is operatively connected to an energy source having energy storage, data storage, and a controller that is configured to cause power and data to be sent from the energy source to the unmanned vehicle and is also configured to receive power and data from the unmanned vehicle and route the power and data to the energy storage and the data storage as appropriate; and

wirelessly transferring power and data from the energy source to the unmanned vehicle via the first device and the second device, wherein the first device and the second device are coils,

wherein the step of positioning a first device operatively connected to the energy source and a second device operatively coupled to the unmanned vehicle within a wireless transmission range is performed autonomously using a signal from the unmanned vehicle.

2. The method of claim 1 further comprising the step of, prior to positioning, establishing communication between the unmanned vehicle and a receiving station operatively connected to the energy source by transmitting a first ping from the unmanned vehicle to the receiving station when the unmanned vehicle is within a predetermined distance from the receiving station and transmitting an second ping from the receiving station to the unmanned vehicle upon receipt of the first ping at the receiving station.

3. The method of claim 1, wherein the wireless transmission is performed using one of optical transmission, inductive transmission, magnetic resonance transmission, and ultrasonic transmission.

4. The method of claim 1, wherein the step of positioning a first device operatively connected to the energy source and a second device operatively coupled to the unmanned vehicle within a wireless transmission range is performed passively using a static alignment structure.

5. The method of claim 4, wherein the first device is contained within a mat connected to the energy source and the second device is towed by the unmanned vehicle, wherein passive positioning of the second device is performed by at least one of magnets and mechanical devices disposed on the mat and configured to capture and guide the second device towards the first device.

6. The method of claim 1, wherein the step of positioning a first device operatively connected to the energy source and a second device operatively coupled to the unmanned vehicle within a wireless transmission range is performed autonomously by the first device using machine vision.

7. The method of claim 1, wherein the first device is not in contact with the second device when the first device and the second device are within the wireless transmission range.

8. The method of claim 1, wherein the energy source is a fuel cell, and wherein the first device is integrated within the fuel cell and the second device is integrated within the unmanned vehicle.

9. The method of claim 8 further comprising the steps of:

performing one or more operational scenarios using the unmanned vehicle; and

providing the unmanned vehicle with at least one of additional power and additional data by repeating the steps of positioning and wirelessly transferring.

10. A system comprising:

a first device operatively connected to an energy source having energy storage and data storage, the first device comprising a housing having a processor and one or more sensors therein, the processor containing circuitry configured to establish communication with an unmanned vehicle and position the first device within a wireless transmission range to a second device operatively connected to the unmanned vehicle, wherein upon such positioning the processor is further configured to initiate wireless transfer of power and data from the energy source to the unmanned vehicle via the first device and the second device, wherein the first device and the second device are coils, wherein the processor is also configured to receive power and data from the unmanned vehicle and route the power and data to the energy storage and the data storage as appropriate, and wherein the circuitry within the processor is configured to position the first device within the wireless transmission range of the second device autonomously using a signal from the unmanned vehicle.

11. The system of claim 10, wherein the signal is an optical signal and at least one of the sensors is an optical sensor.

12. The system of claim 10, wherein the first device is tethered to the energy source.

13. The system of claim 10, wherein the first device is directly mounted to the energy source.

14. The system of claim 10, wherein the second device is located within the unmanned vehicle.

15. The system of claim 10, wherein the processor further comprises circuitry configured to calibrate the speed of movement of the first device towards the second device.

16. The system of claim 10 further comprising a mat connected to the energy source, wherein the first device is contained within the mat, wherein the second device is towed by the unmanned vehicle, wherein the mat contains at least one of magnets and mechanical devices disposed thereon and configured to capture and guide the second device towards the first device.

17. A system comprising:

a first device operatively connected to an underwater energy source having energy storage and data storage, the first device comprising a housing having a processor therein, the processor containing circuitry configured to establish communication with an unmanned underwater vehicle and to position the first device within a wireless transmission range to a second device connected to the unmanned underwater vehicle, wherein upon such positioning the processor is further configured to initiate wireless transfer of power and data from the underwater energy source to the unmanned underwater vehicle via the first device and the second device, wherein the first device and the second device are coils, wherein the processor is also configured to receive power and data from the unmanned vehicle and route the power and data to the energy storage and the data storage as appropriate, and wherein the circuitry within the processor is configured to position the first device within the wireless transmission range of the second device autonomously using a signal from the unmanned underwater vehicle.

18. The system of claim 17, wherein the first device further comprises one or more sensors therein, wherein at least one of the sensors is an optical sensor and the circuitry contained within the processor is configured to position the first device within the wireless transmission range to the second device using a signal from the unmanned underwater vehicle.