US 11,690,563 B2
Methods and systems for remote sleep monitoring
Yu Rong, Tempe, AZ (US); Alex Chiriyath, Tempe, AZ (US); Arindam Dutta, Tempe, AZ (US); and Daniel W. Bliss, Phoenix, AZ (US)
Assigned to Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US)
Appl. No. 17/772,844
Filed by ARIZONA BOARD OF REGENTS ON BEHALF OF ARIZONA STATE UNIVERSITY, Scottsdale, AZ (US)
PCT Filed Oct. 27, 2020, PCT No. PCT/US2020/057452
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/086809, PCT Pub. Date May 6, 2021.
Claims priority of provisional application 62/926,717, filed on Oct. 28, 2019.
Prior Publication US 2023/0018038 A1, Jan. 19, 2023
Int. Cl. A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/05 (2021.01)
CPC A61B 5/4812 (2013.01) [A61B 5/0205 (2013.01); A61B 5/05 (2013.01); A61B 5/4818 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A method for remote sleep monitoring, the method comprising:
transmitting a radar signal toward a subject;
receiving a radio frequency (RF) response signal corresponding to the radar signal;
monitoring vital signs of a subject, the vital signs comprising a respiratory signal and a cardiac signal, the monitoring of the vital signs comprising:
processing the RF response signal, the processing comprising:
producing vital sign signals, the vital sign signals comprising the respiratory signal and a mixed respiratory and cardiac spatial channel;
extracting the cardiac signal from the mixed respiratory and cardiac spatial channel;
producing spatio-temporal data of motion response in the RF response signal; and
range gating the spatio-temporal data to produce a plurality of spatial channels comprising one or more respiratory spatial channels and one or more mixed respiratory and cardiac spatial channels; and
monitoring the vital sign signals over an evaluation period; and
classifying a sleep state of the subject based on results from monitoring the vital signs.