US 11,857,300 B2
Multi sensor radio frequency detection
Stephen McMahon, Dublin (IE); Przemyslaw Szkot, Dublin (IE); and Redmond Shouldice, Dublin (IE)
Assigned to ResMed Sensor Technologies Limited
Filed by ResMed Sensor Technologies Limited, Dublin (IE)
Filed on Dec. 21, 2022, as Appl. No. 18/086,172.
Application 18/086,172 is a continuation of application No. 17/179,602, filed on Feb. 19, 2021, granted, now 11,559,217.
Application 17/179,602 is a continuation of application No. 16/860,709, filed on Apr. 28, 2020, granted, now 11,022,678, issued on Jun. 1, 2021.
Application 16/860,709 is a continuation of application No. 15/561,769, granted, now 10,670,700, issued on Jun. 2, 2020, previously published as PCT/EP2016/058791, filed on Apr. 20, 2016.
Claims priority of provisional application 62/207,670, filed on Aug. 20, 2015.
Claims priority of provisional application 62/149,916, filed on Apr. 20, 2015.
Prior Publication US 2023/0240547 A1, Aug. 3, 2023
Int. Cl. A61B 5/024 (2006.01); G01S 7/02 (2006.01); A61B 5/00 (2006.01); G01S 7/36 (2006.01); A61B 5/0507 (2021.01); A61B 5/11 (2006.01); G01S 7/41 (2006.01); G01S 13/87 (2006.01); G01S 13/88 (2006.01); A61B 5/113 (2006.01); G01S 13/56 (2006.01); G01S 13/524 (2006.01); A61B 5/08 (2006.01)
CPC A61B 5/02444 (2013.01) [A61B 5/0017 (2013.01); A61B 5/0507 (2013.01); A61B 5/08 (2013.01); A61B 5/11 (2013.01); A61B 5/113 (2013.01); A61B 5/7203 (2013.01); G01S 7/023 (2013.01); G01S 7/36 (2013.01); G01S 7/415 (2013.01); G01S 13/524 (2013.01); G01S 13/56 (2013.01); G01S 13/87 (2013.01); G01S 13/88 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A radio frequency physiological motion sensing apparatus configured as a bedside unit and for operation in a multi-sensor location, for detecting physiology motion characteristics indicative of sleep, the physiological motion sensing apparatus comprising:
a radio frequency transmitter, the transmitter configured to emit radio frequency signals in pulses; and
a receiver configured to receive reflected ones of the emitted radio frequency signals to detect motion of a reflecting surface;
wherein the transmitter is configured for transmission of the radio frequency signals with another radio frequency physiological motion sensing apparatus in a vicinity of the radio frequency physiological motion sensing apparatus to mitigate interference between emitted signals from the radio frequency physiological motion sensing apparatuses according to an organized timing scheme, wherein the radio frequency physiological motion sensing apparatus is configured to emit the pulses, each with a pulse width and a pulse repetition interval, wherein the pulse width is a fractional portion of the pulse repetition interval that reduces probability of the interference.