Systems and methods of controlling transmission of wireless power based on object indentification using a video camera

Patent metadata

Field	Value
Publication number	US-10291056-B2
Application number	US-201615053292-A
Country	US
Kind code	B2
Filing date	Feb 25, 2016
Priority date	Sep 16, 2015
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

Embodiments disclosed herein discloses a wireless charging system configured to generate and transmit power waves that, due to physical waveform characteristics converge at a predetermined location in a transmission field to generate a pocket of energy. Receivers associated with an electronic device being powered by the wireless charging system, may extract energy from these pocket of energy and then convert that energy into usable electric power for the electronic device associated with a receiver. The pocket of energy may manifest as a three-dimensional field (e.g., transmission field) where energy may be harvested by a receiver positioned within or nearby the pocket of energy. Video sensors capture actual video images of fields of view within the transmission field, and a processor identifies selected objects, selected events, and/or selected locations within the captured video images.

First claim

What is claimed is:

1. A system for wireless power transmission comprising:
a radio frequency wireless power transmitter that is in communication with a video camera for capturing image data of at least a portion of a transmission field of the radio frequency wireless power transmitter, wherein the image data comprises a visual pattern; and
a processor of the radio frequency wireless power transmitter configured to:
identify an object when the visual pattern matches a pre-stored visual pattern representing the object; and
control transmission of one or more radio frequency power transmission waves to a receiving electronic device based on a location of the identified object, wherein the receiving electronic device uses the one or more radio frequency power transmission waves to power or to charge the receiving electronic device.

2. The system of claim 1 , wherein the video camera is selected from a group consisting of infrared cameras, thermal cameras, and visible light cameras.

3. The system of claim 1 , wherein the video camera is an integral component of the transmitter.

4. The system of claim 1 , wherein the pre-stored visual pattern includes one or more of: points, lines, colors, shape, and letters.

5. The system of claim 1 , further comprising an additional video camera, and a trigger unit for triggering capture of image data by the video camera and the additional video cameras in a sequence by a central clock signal generated by the trigger unit.

6. The system of claim 5 , wherein the video camera and the additional video camera have their own synchronized clocks.

7. The system of claim 1 , wherein the processor is further configured to receive two-dimensional coordinates of the identified object from the video camera.

8. The system of claim 7 , wherein the processor is further configured to create a third dimension coordinate for the identified object based on the two-dimensional coordinates and wherein the transmitter is used as a frame of reference for the identified object to generate three-dimensional coordinates of the identified object.

9. The system of claim 1 , wherein the identified object corresponds to a receiver.

10. The system of claim 1 , wherein the identified object corresponds to a living being.

11. A computer-implemented method for wireless power transmission comprising:
generating, by a video camera of a radio frequency wireless power transmitter that is in communication with the video camera, image data of at least a portion of a transmission field of the radio frequency wireless power transmitter, wherein the image data comprises a visual pattern;
identifying, by a processor of the radio frequency wireless power transmitter, an object when the visual pattern matches a pre-stored visual pattern representing the object; and
controlling, by the processor, transmission of one or more radio frequency power transmission waves to a receiving electronic device based on a location of the identified object, wherein the receiving electronic device uses the one or more radio frequency power transmission waves to power or to charge the receiving electronic device.

12. The computer-implemented method of claim 11 , wherein the video camera is selected from a group consisting of infrared cameras, thermal cameras, and visible light cameras.

13. The computer-implemented method of claim 11 , wherein the video camera is an integral component of the transmitter.

14. The computer-implemented method of claim 11 , wherein the pre-stored visual pattern includes one or more of: points, lines, colors, shape, and letters.

15. The computer-implemented method of claim 11 , further comprising triggering, by a trigger unit of the transmitter, the capture of the image data by one or more video cameras, wherein the one or more video cameras are triggered in a sequence by a central clock signal generated by the trigger unit.

16. The computer-implemented method of claim 15 , wherein each of the one or more video cameras have their own synchronized clocks.

17. The computer-implemented method of claim 15 , further comprising receiving, by the processor, two-dimensional coordinates of the identified object from the video camera.

18. The computer-implemented method of claim 17 , further comprising creating, by the processor, a third dimension coordinate for the identified object based on the two-dimensional coordinates, wherein the transmitter is used as a frame of reference for the identified object to generate three-dimensional coordinates of the identified object.

19. The computer-implemented method of claim 15 , wherein the identified object corresponds to a receiver.

20. The computer-implemented method of claim 15 , wherein the identified object corresponds to a living being.

Assignees

• Energous Corp

Inventors

• Bell Douglas
• Leabman Michael A

Classifications

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• H02J7/94

  in response to battery current · CPC title

• H04N5/04

  Synchronising (for television systems using pulse code modulation H04N7/56) · CPC title

• G06T7/60

  Analysis of geometric attributes · CPC title

• H04N7/18

  Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast · CPC title