US 11,754,676 B2
Precision sleep tracking using a contactless sleep tracking device
Dongeek Shin, Mountain View, CA (US); Michael Dixon, Sunnyvale, CA (US); Ajay Kannan, Dublin, CA (US); Jeffrey Yu, San Francisco, CA (US); Ashton Udall, San Bruno, CA (US); Ken Mixter, Los Altos Hills, CA (US); Reena Lee, Menlo Park, CA (US); David Janssens, San Francisco, CA (US); and Andrew William Goldenson, Belmont, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Aug. 11, 2020, as Appl. No. 16/990,726.
Prior Publication US 2022/0050175 A1, Feb. 17, 2022
Int. Cl. G01S 7/41 (2006.01); G01S 7/35 (2006.01); A61B 5/00 (2006.01); A61B 5/05 (2021.01); G01S 13/86 (2006.01); A61B 5/0205 (2006.01); A61B 5/11 (2006.01); A61B 5/024 (2006.01); A61B 5/113 (2006.01)
CPC G01S 7/415 (2013.01) [A61B 5/05 (2013.01); A61B 5/4806 (2013.01); G01S 7/354 (2013.01); A61B 5/0205 (2013.01); A61B 5/02444 (2013.01); A61B 5/113 (2013.01); A61B 5/1126 (2013.01); G01S 7/356 (2021.05); G01S 13/86 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A contactless sleep analysis device, the contactless sleep analysis device comprising:
a housing;
a radar sensor, housed by the housing, that comprises a plurality of antennas and monitors movement using radio waves;
a processing system, comprising one or more processors, housed by the housing, that receives data from the radar sensor, wherein the processing system is configured to:
receive a plurality of digital radar data streams, wherein each digital stream of the plurality of digital radar data streams is based on radio waves received by an antenna of the plurality of antennas of the radar sensor;
perform a direction optimization process based on a direction in which vital signs of a user are detected, the direction optimization process determining a first weighting and a second weighting;
apply the first weighting to a first digital radar data stream of the plurality of digital radar data streams;
apply the second weighting to a second digital radar data stream of the plurality of digital radar data streams;
combine the weighted first digital radar data stream and the weighted second digital radar data stream to create a first directionally-targeted radar data stream;
perform a sleep analysis based on the first directionally-targeted radar data stream; and
output sleep data for the user based on the performed sleep analysis.