公开(公告)号：US12150744B2

公开(公告)日：2024-11-26

申请号：US16651568

申请日：2018-09-18

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Shaoxiong Sun ,  Wouter Herman Peeters ,  Rick Bezemer ,  Xi Long ,  Ronaldus Maria Aarts

IPC: A61B5/026 ,  A61B5/00 ,  A61B5/024 ,  A61B5/029 ,  A61B5/0295 ,  A61B5/1455

Abstract: In a sensor system (12), output signals of at least one PPG sensor (14) are processed to derive a modified pulse amplitude variation (PAV) value, being modified to take account of a baseline variation of the PPG sensor output signal. In particular, the modified PAV is derived through performing a modification step (42) in which either: a baseline variation of the PPG sensor output is derived and combined with a previously derived PAV, or, a PPG sensor output is first processed to perform baseline variation compensation, in advance of then deriving a PAV from the compensated signal.