公开(公告)号：US20190148984A1

公开(公告)日：2019-05-16

申请号：US16107893

申请日：2018-08-21

Applicant: Google LLC

Inventor： Peter J. Bevelacqua ,  Jacobi Colton Grillo ,  Ryan Kristopher Green ,  Daniel Adam Warren ,  Brian Mitchell Silverstein

IPC: H02J50/23 ,  H02J50/27 ,  H04W52/04

Abstract: In aspects, indoor to outdoor wireless power delivery is described that provides continuous power through a building structure. A transmitter receives an indication of a required continuous power from a receiver, configures one or more settings to generate an electromagnetic field to transfer the required continuous power, and generates the electromagnetic field to transfer the required continuous power to the receiver. In other aspects of indoor to outdoor wireless power delivery, a transmitter and a receiver are aligned to provide continuous power through a building structure. The transmitter and the receiver enter an alignment mode, the transmitter produces an electromagnetic field to inductively transfer power to the receiver, and the receiver senses the electromagnetic field produced by the transmitter and provides an indication of an alignment of the transmitter and the receiver to a user of the system.

公开(公告)号：US20220005337A1

公开(公告)日：2022-01-06

申请号：US17294268

申请日：2019-01-08

Applicant: Google LLC

Inventor： Dongeek Shin ,  Yu Wen ,  Zhifeng Cai ,  Brian Mitchell Silverstein ,  Raymond Reynolds Hayes ,  Kevin N. Hayes

IPC: G08B21/04 ,  H04L5/00 ,  H04L29/08 ,  H04W4/02 ,  G08B29/18

Abstract: This document describes techniques and devices to detect and classify human and animal presence and/or motion based on changes in the interaction of the human or animal with Wireless Local Area Network (WLAN) radio frequency (RF) signals within or about a building structure, such as a home or office. A first WLAN device transmits a sounding packet to a second WLAN device and receives an acknowledgement (ACK) of receiving the sounding packet by the second WLAN device. The first WLAN device uses the received ACK to determine Channel State Information (CSI) for an RF signal path between the first WLAN device and the second WLAN device, aggregates the determined CSI with additional CSI, and uses the aggregated CSI to determine a presence or a motion within the structure.

公开(公告)号：US11688263B2

公开(公告)日：2023-06-27

申请号：US17294268

申请日：2019-01-08

Applicant: Google LLC

Inventor： Dongeek Shin ,  Yu Wen ,  Zhifeng Cai ,  Brian Mitchell Silverstein ,  Raymond Reynolds Hayes ,  Kevin N. Hayes

IPC: G08B21/02 ,  G08B21/04 ,  G08B29/18 ,  H04L5/00 ,  H04L67/00 ,  H04W4/02 ,  G08B13/24 ,  H04L67/104

CPC classification number: G08B21/043 ,  G08B29/188 ,  H04L5/0055 ,  H04L67/34 ,  H04W4/027 ,  G08B13/2491 ,  H04L67/104

Abstract: This document describes techniques and devices to detect and classify human and animal presence and/or motion based on changes in the interaction of the human or animal with Wireless Local Area Network (WLAN) radio frequency (RF) signals within or about a building structure, such as a home or office. A first WLAN device transmits a sounding packet to a second WLAN device and receives an acknowledgement (ACK) of receiving the sounding packet by the second WLAN device. The first WLAN device uses the received ACK to determine Channel State Information (CSI) for an RF signal path between the first WLAN device and the second WLAN device, aggregates the determined CSI with additional CSI, and uses the aggregated CSI to determine a presence or a motion within the structure.