US 12,285,650 B2
Methods and apparatus for power expenditure and technique determination during bipedal motion
Wyatt Mohrman, Boulder, CO (US); Kun Li, Boulder, CO (US); Gus Pernetz, Louisville, CO (US); James Williamson, Broomfield, CO (US); Li Shang, Boulder, CO (US); and Robert P. Dick, Chelsea, MI (US)
Assigned to Stryd, Inc., Boulder, CO (US)
Filed by Stryd, Inc., Boulder, CO (US)
Filed on Dec. 19, 2022, as Appl. No. 18/068,051.
Application 18/068,051 is a continuation of application No. 17/590,390, filed on Feb. 1, 2022.
Application 17/590,390 is a continuation of application No. 15/463,261, filed on Mar. 20, 2017, granted, now 11,278,765, issued on Mar. 22, 2022.
Application 15/463,261 is a continuation of application No. PCT/US2015/051181, filed on Sep. 21, 2015.
Prior Publication US 2023/0191192 A1, Jun. 22, 2023
Int. Cl. A63B 24/00 (2006.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01); A61B 5/16 (2006.01); A63B 69/00 (2006.01); G01C 21/16 (2006.01); G01L 5/00 (2006.01); G09B 19/00 (2006.01)
CPC A63B 24/0006 (2013.01) [A61B 5/1118 (2013.01); A61B 5/165 (2013.01); A61B 5/4866 (2013.01); A61B 5/6807 (2013.01); A61B 5/7271 (2013.01); A63B 24/0062 (2013.01); A63B 69/0028 (2013.01); G01C 21/166 (2020.08); G01C 21/188 (2020.08); G01L 5/00 (2013.01); G09B 19/0015 (2013.01); G09B 19/0038 (2013.01); A61B 2503/10 (2013.01); A61B 2560/0406 (2013.01); A61B 2562/0219 (2013.01); A63B 2024/0009 (2013.01); A63B 2220/12 (2013.01); A63B 2220/62 (2013.01); A63B 2220/74 (2013.01); A63B 2220/803 (2013.01); A63B 2220/836 (2013.01); A63B 2225/50 (2013.01); A63B 2230/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A watch configured to be worn on a wrist of a user, the watch comprising:
a sensor platform comprising:
an inertial measurement unit (IMU) for acquiring multi-axis motion data while the user is engaging in a physical activity; and
a pressure sensor for acquiring an air pressure data while the user is engaging in the physical activity;
one out more output devices including at least one of a display, a speaker, or a vibration element;
memory; and
a processor operable to:
receive the multi-axis motion data from the IMU;
receive the air pressure data from the pressure sensor;
estimate, during the physical activity, power expended by the user based on at least:
the air pressure data;
a speed determined, in part, from the multi-axis motion data;
a change in speed determined, in part, from the multi-axis motion data; and
a scaling factor based on measurements of one or more users; and
based on the estimated power, generating feedback via the one or more output devices.