公开(公告)号：US20250025072A1

公开(公告)日：2025-01-23

申请号：US18909345

申请日：2024-10-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vladislav Valerievich LYCHAGOV ,  Anton Sergeevich MEDVEDEV ,  Elena Konstantinovna VOLKOVA ,  Gennady Dmitrievich MAMYKIN

IPC: A61B5/1455 ,  A61B5/00 ,  G16H10/40 ,  G16H50/70

Abstract: A method for measuring blood constituents is provided. The method includes radiating an area of a subject's body, containing blood constituents and dynamic and static tissue components, with at least two light beams, detecting at least one backscattered light feedback from blood constituents and dynamic and static tissue components, the feedback representing at least one interferometric signal from each of the at least two light sources, filtering the at least one interferometric signals in accordance with a frequency band which contains frequencies of interferometric oscillations, defining dynamics of blood constituents, performing analog-to-digital (AD) conversion of the filtered signals at a frequency corresponding to the frequency band, to form discrete filtered signals, obtaining from the discrete filtered signals, a set of spectral-time features of signals, and obtaining concentration of the blood constituents based on functional relationships of the obtained set of spectral-time features of signals and concentrations of the blood constituents.

公开(公告)号：US20220018754A1

公开(公告)日：2022-01-20

申请号：US17294905

申请日：2019-11-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Vladislav Valerievich LYCHAGOV ,  Elena Konstantinovna VOLKOVA ,  Artem Yurevich KLIMCHUK ,  Alexey Vyacheslavovich PERCHIK ,  Vladimir Mikhailovich SEMENOV

IPC: G01N15/14 ,  G02B3/00

Abstract: The present invention relates to dust concentration measurement and to dust composition and particle size determination. Multimodal dust sensor is able to simultaneously determine the concentration, size and origin of dust particles in real time. Method of operation of a single measurement channel of the multimodal dust sensor comprises: collimating laser radiation; splitting the laser radiation into two beams: a first beam and a second beam; and focusing the first beam to form a probe volume, wherein a dust particle entering the probe volume: a) scatters the first beam, thereby providing a homodyne mode of operation, in which the second beam and the scattered first beam are combined; the combined radiation falls on the photodetector that registers the Doppler effect; and/or b) fluoresces, thereby providing a fluorescent mode of operation, in which the fluorescent light falls on the photodetector that registers the fluorescent light.

公开(公告)号：US20240077405A1

公开(公告)日：2024-03-07

申请号：US18388148

申请日：2023-11-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Vladislav Valerievich LYCHAGOV ,  Elena Konstantinovna VOLKOVA ,  Artem Yurevich KLIMCHUK ,  Alexey Vyacheslavovich PERCHIK ,  Vladimir Mikhailovich SEMENOV

IPC: G01N15/14 ,  G02B3/00

CPC classification number: G01N15/1434 ,  G02B3/0037 ,  G01N2015/1493

Abstract: Example embodiments relate to dust concentration measurement and to dust composition and particle size determination. Multimodal dust sensor is able to simultaneously determine the concentration, size and origin of dust particles in real time. Method of operation of a single measurement channel of the multimodal dust sensor comprises: collimating laser radiation; splitting the laser radiation into two beams: a first beam and a second beam; and focusing the first beam to form a probe volume, wherein a dust particle entering the probe volume: a) scatters the first beam, thereby providing a homodyne mode of operation, in which the second beam and the scattered first beam are combined; the combined radiation falls on the photodetector that registers the Doppler effect; and/or b) fluoresces, thereby providing a fluorescent mode of operation, in which the fluorescent light falls on the photodetector that registers the fluorescent light.

公开(公告)号：US20240268720A1

公开(公告)日：2024-08-15

申请号：US18434212

申请日：2024-02-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vladislav Valerievich LYCHAGOV ,  Vladimir Mikhailovich SEMENOV ,  Elena Konstantinovna VOLKOVA ,  Dmitrii Igorevich CHERNAKOV

IPC: A61B5/1455 ,  A61B5/00 ,  G16H40/67 ,  G16H50/20

CPC classification number: A61B5/14551 ,  A61B5/681 ,  A61B5/7253 ,  G16H40/67 ,  G16H50/20

Abstract: A wearable device and a method for determining a hemoglobin concentration in a user's blood are provided. The method includes irradiating a tissue of a user with radiation of at least two different wavelengths, detecting photoplethysmographic (PPG) signals from the user's tissue in a time domain at the at least two different wavelengths in a reflection mode, transforming the detected PPG signals from the time domain to a frequency domain or a time-frequency domain, describing the transformed PPG signals with respect to harmonics to obtain a set of characteristics, and determining a hemoglobin concentration in the user's blood based on the obtained set of characteristics and an information from a database.