Bio-information measuring apparatus and bio-information measuring method
AssigneeSamsung Electronics Co., Ltd.
InventorsSang Yun Park, Jae Min Kang, Yong Joo Kwon, Youn Ho Kim, Seung Woo Noh
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Abstract
An apparatus for measuring bio-information in a non-invasive manner includes: a pulse wave sensor configured to measure a plurality of pulse wave signals having different wavelengths from an object; a contact pressure sensor configured to measure contact pressure of the object while the plurality of pulse wave signals are measured; and a processor configured to obtain an oscillometric waveform based on the contact pressure and the plurality of pulse wave signals having the different wavelengths, and obtain bio-information based on the oscillometric waveform.
Claims22
A bio-information measuring apparatus comprising:
- a pulse wave sensor configured to measure a plurality of pulse wave signals having different wavelengths from an object, the plurality of pulse wave signals comprising a first pulse wave signal and a second pulse wave signal;
- a contact pressure sensor configured to measure a contact pressure between the bio-information measuring apparatus and the object while the plurality of pulse wave signals are measured;
- and
- a processor configured to:
- obtain a difference signal by subtracting an n-th order differential signal of the second pulse wave signal from an n-th order differential signal of the first pulse wave signal, n being an integer equal to or greater than 1;
- obtain an oscillometric waveform based on the difference signal and the contact pressure;
- and
- obtain bio-information using the oscillometric waveform,
- wherein the bio-information comprises at least one of blood pressure, vascular age, arterial stiffness, aortic pressure waveform, vascular compliance, stress index, and degree of fatigue.
A bio-information measuring method that is performed by a bio-information measuring apparatus, the bio-information measuring method comprising:
- measuring a plurality of pulse wave signals having different wavelengths from an object, the plurality of pulse wave signals comprising a first pulse wave signal and a second pulse wave signal;
- measuring a contact pressure between the bio-information measuring apparatus and the object while the plurality of pulse wave signals are measured;
- obtaining a difference signal by subtracting an n-th order differential signal of the second pulse wave signal from an n-th order differential signal of the first pulse wave signal, n being an integer equal to or greater than 1;
- obtaining an oscillometric waveform based on the difference signal and the contact pressure;
- and
- obtaining bio-information using the oscillometric waveform,
- wherein the bio-information comprises at least one of blood pressure, vascular age, arterial stiffness, aortic pressure waveform, vascular compliance, stress index, and degree of fatigue.
Dependencies are inferred from the claim text.