Title:
METHOD AND DEVICE FOR MEASURING SLEEP EFFICIENCY BY USING RADAR
Document Type and Number:
WIPO Patent Application WO/2018/124812
Kind Code:
A1
Abstract:
A method and a device for measuring sleep efficiency by using a radar are provided. According to one embodiment of the present invention, the device for measuring sleep efficiency by using a radar comprises: a height recognition unit for recognizing the height of a person to be measured by using a signal received from the radar; a motion section extraction unit for extracting, from the received signal, a motion section during sleeping of a person to be measured and calculating a length of the extracted motion section and a motion amount; a normalization unit for normalizing the motion amount by applying, to the calculated motion amount, a ratio of the height of the person to be measured to the length of the motion section; a sleep/awaken state determination unit for calculating a total motion amount per unit length for a predetermined time on the basis of the normalized motion amount and comparing the calculated total motion amount and a predetermined threshold value to determine whether the person to be measured is in an awaken state or a sleep state; and a sleep efficiency calculation unit for calculating sleep efficiency by using a total sleep time, a time determined for the awaken state and the frequency determined for awaken states during the total sleep time, and a predetermined awaken state maintaining time for which the awaken state is predicted to be maintained.
Inventors:
CHO SUNG HO (KR)
CHOI JEONG WOO (KR)
CHO SEOK HYUN (KR)
CHOI JEONG WOO (KR)
CHO SEOK HYUN (KR)
Application Number:
PCT/KR2017/015730
Publication Date:
July 05, 2018
Filing Date:
December 29, 2017
Export Citation:
Assignee:
WRT LAB CO LTD (KR)
International Classes:
A61B5/00; A61B5/11; G01S13/62
Foreign References:
| US20130053653A1 | 2013-02-28 | |||
| JP2014512905A | 2014-05-29 | |||
| JP2013022360A | 2013-02-04 | |||
| KR20140003867A | 2014-01-10 |
Other References:
OTA, KYOHEI ET AL.: "Elderly-care Motion Sensor Using UWB-IR", SENSORS APPLICATIONS SYMPOSIUM (SAS) , 2011, 22 February 2011 (2011-02-22), pages 159 - 162, XP031935383
Attorney, Agent or Firm:
MIN, Young Joon (KR)
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