Apparatus and method for estimating blood pressure
AssigneesSamsung Electronics Co., Ltd., University of Maryland, College Park
InventorsDae Geun Jang, Peyman Yousefian, Jin-Oh Hann, Ui Kun Kwon, Youn Ho Kim, Sungtae Shin
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Abstract
An apparatus for estimating blood pressure includes: a ballistocardiogram (BCG) sensor configured to measure a limb BCG signal from a user; and a processor configured to obtain blood pressure-related features from the measured limb BCG signal, according to sensing characteristics of the BCG sensor, and estimate a blood pressure of the user based on the obtained blood pressure-related features.
Claims15
An apparatus for estimating blood pressure, the apparatus comprising:
- a ballistocardiogram (BCG) sensor comprising an acceleration sensor configured to measure a limb BCG signal from a user;
- and
- a processor configured to:
- based on a sensor type and a measurement position of the BCG sensor, at a time when the limb BCG signal is measured, corresponding to the acceleration sensor and a wrist of the user, respectively, calibrate a reference limb BCG prediction model based on a parameter that is set according to mass of an arm with the wrist, to obtain a personalized limb BCG prediction model,
- convert, by using the personalized limb BCG prediction model that is personalized based on the sensor type and the measurement position of the BCG sensor at the time when the limb BCG signal is measured, the measured limb BCG signal to a converted limb BCG signal, in which a noise effect caused by the sensor type and the measurement position of the BCG sensor is removed,
- obtain blood pressure-related features from the converted limb BCG signal, and
- estimate a blood pressure of the user based on the blood pressure-related features.
A method of estimating blood pressure, the method comprising:
- measuring a limb ballistocardiogram (BCG) signal from a user, by a BCG sensor comprising an acceleration sensor;
- based on a sensor type and a measurement position of the BCG sensor, at a time when the limb BCG signal is measured, corresponding to the acceleration sensor and a wrist of the user, respectively, calibrate a reference limb BCG prediction model based on a parameter that is set according to mass of an arm with the wrist, to obtain a personalized limb BCG prediction model;
- converting, by using the personalized limb BCG prediction model that is personalized based on the sensor type and the measurement position of the BCG sensor at the time when the limb BCG signal is measured, the measured limb BCG signal to a converted limb BCG signal, in which a noise effect caused by the sensor type and the measurement position of the BCG sensor is removed;
- obtaining blood pressure-related features from the converted limb BCG signal;
- and
- estimating a blood pressure of the user based on the blood pressure-related features.
Dependencies are inferred from the claim text.