Techniques for imaging wireless power delivery environments and tracking objects therein
First Claim
Patent Images
1. A method of tracking objects in a wireless power delivery environment, the method comprising:
- receiving, by multiple adaptively-phased radio frequency antennas of a wireless power delivery system, sequential beacon signals transmitted by multiple power receiver clients respectively in the wireless power delivery environment and responsively transmitting wireless power to the power receiver clients;
generating, by the wireless power delivery system, a phase pattern for each received beacon signal,wherein the phase pattern includes a measured phase of the received beacon at each of the multiple adaptively-phased radio frequency antennas;
comparing the phase pattern to an expected phase pattern for each received beacon signal to identify phase differences,wherein the expected phase pattern includes an expected phase of the received beacon signal at each of the multiple adaptively-phased radio frequency antennas;
processing the phase differences to identify one or more non-static objects within the wireless power delivery environment, wherein the non-static objects do not transmit beacon signals to the wireless power delivery system; and
tracking movement data associated with the one or more non-static objects within the wireless power delivery environment based on a three-dimensional image of the wireless power delivery environment and the phase differences,wherein the three-dimensional image identifies shapes and relative locations of static objects within the wireless power delivery environment.
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Abstract
Techniques are described herein for imaging static or semi-static objects in a wireless power delivery environment and tracking non-static objects contained therein. More specifically, embodiments of the present disclosure describe techniques for determining the relative locations and movement of non-static objects in a wireless power delivery environment. Additionally, the techniques describe methods and system for generation of motion-based maps such as heat (or dwell maps) and flow maps.
35 Citations
20 Claims
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1. A method of tracking objects in a wireless power delivery environment, the method comprising:
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receiving, by multiple adaptively-phased radio frequency antennas of a wireless power delivery system, sequential beacon signals transmitted by multiple power receiver clients respectively in the wireless power delivery environment and responsively transmitting wireless power to the power receiver clients; generating, by the wireless power delivery system, a phase pattern for each received beacon signal, wherein the phase pattern includes a measured phase of the received beacon at each of the multiple adaptively-phased radio frequency antennas; comparing the phase pattern to an expected phase pattern for each received beacon signal to identify phase differences, wherein the expected phase pattern includes an expected phase of the received beacon signal at each of the multiple adaptively-phased radio frequency antennas; processing the phase differences to identify one or more non-static objects within the wireless power delivery environment, wherein the non-static objects do not transmit beacon signals to the wireless power delivery system; and tracking movement data associated with the one or more non-static objects within the wireless power delivery environment based on a three-dimensional image of the wireless power delivery environment and the phase differences, wherein the three-dimensional image identifies shapes and relative locations of static objects within the wireless power delivery environment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A wireless power delivery system for delivering power to clients and tracking movement of objects in a wireless power delivery environment, the system comprising:
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multiple adaptively-phased radio frequency antennas, each antenna configured to receive sequential beacon signals from multiple power receiver clients within the wireless power delivery and responsively transmit wireless power to the power receiver clients; control circuitry operatively coupled to the one or more adaptively-phased radio frequency antennas, the control circuitry configured to; measure a phase of each beacon signal at each of the multiple adaptively-phased radio frequency antennas; generate a phase pattern associated with each beacon signal, wherein the phase pattern includes the measured phase of the received beacon signal at each of the multiple adaptively-phased radio frequency antennas; compare the phase pattern to an expected phase pattern for each beacon signal to identify phase differences, wherein the expected phase pattern includes the expected phase of the received beacon at each of the multiple adaptively-phased radio frequency antennas; process the phase differences to identify one or more non-static, non-beaconing, objects within the wireless power delivery environment; and track movement data associated with the one or more non-static objects within the wireless power delivery environment based on a three-dimensional image of the wireless power delivery environment and the phase differences, wherein the three-dimensional image identifies shapes and relative locations of static objects within the wireless power delivery environment. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A non-transitory computer readable storage medium having instructions stored thereon, which when executed by one or more processors of a wireless power delivery system, cause the wireless power delivery system to:
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process beacon signals sequentially received by multiple adaptively-phased radio frequency antennas of the wireless power delivery system, wherein the beacon signals are respectively transmitted by multiple power receiver clients in the wireless power delivery environment; direct the multiple adaptively-phased radio frequency antennas to transmit wireless power to the multiple power receiver clients; generate a phase pattern for each received beacon signal, wherein the phase pattern includes a measured phase of the received beacon at each of the multiple adaptively-phased radio frequency antennas; compare the phase pattern to an expected phase pattern for each received beacon signal to identify phase differences, wherein the expected phase pattern includes an expected phase of each received beacon signal at each of the multiple adaptively-phased radio frequency antennas as predetermined by the wireless power delivery system; process the phase differences to identify one or more non-static, non-beaconing, objects within the wireless power delivery environment; and track movement data associated with the one or more non-static objects within the wireless power delivery environment based on a three-dimensional image of the wireless power delivery environment and the differences in the phase patterns, wherein the three-dimensional image identifies shapes and relative locations of static and semi-static objects within the wireless power delivery environment. - View Dependent Claims (19, 20)
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Specification