Apparatus for measuring motion noise robust pulse wave and method thereof
AssigneeElectronics and Telecommunications Research Institute
InventorsChankyu PARK, Joochan Sohn, Jaehong Kim, Hyeonsung Cho
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Abstract
Provided are a method of measuring the pulse wave at the back of a wrist, etc. where measurement of the pulse wave is difficult so as to prevent a user to feel inconvenience in a mobile environment and a method of detecting the pulse wave at a write portion or at the back of the wrist which has comparatively weak restraint force in a human body by recovering an original signal with comparatively minimum errors so as to be robust to motion noise according to motion of the wrist.
Claims15
An apparatus for measuring a motion noise robust pulse wave, comprising:
- a PPG sensor that is disposed at the back of a wrist of an examinee to detect a pulse wave signal from a signal output to the back of the wrist of the examinee;
- an acceleration sensor that detects motion of the examinee at a portion where the PPG sensor is mounted;
- and
- a signal preprocessor that estimates a motion noise model corresponding to the motion of the examinee by predicting the motion of the examinee on the basis of an acceleration signal detected by the acceleration sensor and removes motion noise for the pulse wave signal from the motion noise model.
A method for measuring a motion noise robust pulse wave, comprising:
- detecting a pulse wave signal from a PPG sensor disposed at the back of a wrist of an examinee;
- detecting motion of the examinee at the portion where the PPG sensor is mounted by using an acceleration sensor;
- estimating a motion noise model corresponding to the motion of the examinee on the basis of the motion information by the examinee and the acceleration signal detected by the acceleration sensor;
- and
- removing the motion noise for the pulse wave signal from the motion noise model.
Dependencies are inferred from the claim text.