公开(公告)号：US20230371822A1

公开(公告)日：2023-11-23

申请号：US18028194

申请日：2020-09-23

Applicant: ANALOG DEVICES INTERNATIONAL UNLIMITED COMPANY

Inventor： Christoph Kaemmerer ,  Johannes Traa

IPC: A61B5/0205 ,  A61B5/00

CPC classification number: A61B5/0205 ,  A61B5/721 ,  A61B2562/0219 ,  A61B5/02405

Abstract: A signal acquisition system configured to track a physiologic signal of a person includes a first accelerometer having a first accelerometer channel configured to obtain information of a physiologic signal. The physiologic signal is obtained extracorporeally. A control circuit receives data from the first accelerometer channel to identify, using at least one harmonic template, a base frequency of the physiologic signal. The system applies a filter to establish a tracking signal initialized with the identified base frequency and stores and/or transmits the tracking signal as a representation of the physiologic signal. The system alternatively performs filtration and estimation operations to extract physiologic information including heart rate, heart rate variability, and respiration rate from the physiologic signal.