US 12,446,788 B2
Device and method for measuring a vital signal
Xin Qi, Shenzhen (CN); and Ting Liu, Shenzhen (CN)
Assigned to Xin Qi, Shenzhen (CN)
Filed by Xin Qi, Guangdong (CN)
Filed on Aug. 12, 2022, as Appl. No. 17/819,324.
Application 17/819,324 is a continuation of application No. 15/764,363, granted, now 11,426,090, previously published as PCT/CN2016/100425, filed on Sep. 27, 2016.
Claims priority of application No. 201510651334.X (CN), filed on Sep. 30, 2015.
Prior Publication US 2022/0378309 A1, Dec. 1, 2022
Int. Cl. A61B 5/024 (2006.01); A61B 5/00 (2006.01); A61B 5/0295 (2006.01); A61B 5/1455 (2006.01)
CPC A61B 5/02427 (2013.01) [A61B 5/1455 (2013.01); A61B 5/14552 (2013.01); A61B 5/14558 (2013.01); A61B 5/7207 (2013.01); A61B 5/7214 (2013.01); A61B 5/0295 (2013.01); A61B 5/7228 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A device for measuring a vital signal, comprising:
a first signal source located at a first place, wherein the first signal source is configured to emit a first light beam to a surface of a living body;
a first signal detecting device located at a second place, wherein the first signal detecting device is configured to detect a first signal reflected by the living body, the first signal being associated with the first light beam;
a second signal detecting device located at a third place, wherein the second signal detecting device is configured to detect a second signal reflected by the living body, the second signal being associated with the first light beam but different from the first signal, wherein
a distance between the first place and the second place is greater than a distance between the first place and the third place; and
each of the first signal and the second signal includes a vital sign component and a motion component of the living body, a ratio of the vital sign component included in the first signal being larger than a ratio of the vital sign component included in the second signal, wherein the ratio of the vital sign component included in the first signal is a ratio of the vital sign component included in the first signal to the motion component in the first signal, and the ratio of the vital sign component included in the second signal is a ratio of the vital sign component to the motion component in the second signal, wherein the vital sign component refers to a heart rate signal, and the motion component refers to motion artifacts generated by a motion of the living body; and
a processor configured to determine a vital signal of the living body based on the first signal and the second signal.