Title:
VITAL SIGN MEASUREMENT DEVICE, VITAL SIGN MEASUREMENT METHOD, AND VITAL SIGN MEASUREMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/112294
Kind Code:
A1
Abstract:
The present invention provides a vital sign measurement device (20) comprising: a signal acquisition unit (21) for acquiring, from antennas (11-1) to (11-N) that receive waves reflected by objects, a reception signal of the reflected waves; and a Fourier transform unit (22) for performing a Fourier transform in the time direction on the reception signal acquired by the signal acquisition unit (21). The vital sign measurement device (20) also comprises: a map calculation unit (23) for using a signal that has been Fourier-transformed by the Fourier transform unit (22) to calculate a two-dimensional azimuth map of complex electrical power corresponding to each of a plurality of distance bins from the vital sign measurement device (20); and a vital sign estimation unit (24) for identifying, on the basis of the time change in the two-dimensional azimuth map of the complex electrical power corresponding to each of the distance bins calculated by the map calculation unit (23), the position where a subject included among the object is present, and estimating vital signs of the subject from the time change in the phase of the complex electrical power for the position where the subject is present.
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Inventors:
KITAMURA TAKAYUKI (JP)
KAGEME SATOSHI (JP)
KAGEME SATOSHI (JP)
Application Number:
PCT/JP2021/046684
Publication Date:
June 22, 2023
Filing Date:
December 17, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
A61B5/0245; A61B5/11; A61B5/113
Domestic Patent References:
| WO2012115220A1 | 2012-08-30 |
Foreign References:
| JP2021166704A | 2021-10-21 | |||
| JP2011145111A | 2011-07-28 | |||
| US20210156980A1 | 2021-05-27 |
Attorney, Agent or Firm:
SANNO PATENT ATTORNEYS OFFICE (JP)
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