Title:
A method for determining a sleep stage of a suitable person for waking
Document Type and Number:
Japanese Patent JP6216439
Kind Code:
B2
Abstract:
A pulse wave signal is registered and an occurrence of human limb movements detected during sleep using a pulse wave sensor and an accelerometer. The values of RR intervals and respiratory rate are measured at preset time intervals t i based on pulse wave signal. Mean P 1 , minimal P 2 , and maximal P 3 values of RR intervals, the standard deviation of RR intervals P 4 , average respiratory rate P 5 and average number of limb movements P 6 are determined based on the above measured values. Function value F ( t i ) is determined thereafter as: F ¢ t i - K 1 ¢ P 1 - K 2 ¢ P 2 - K 3 ¢ P 3 + K 4 ¢ P 4 + K 5 ¢ P 5 + K 6 ¢ P 6 ,
where K 1 - K 6 are weight coefficients characterizing the contribution of the corresponding parameter to function value F ( t i ) ; whereat the onset and termination of sleep phase favorable to awakening is determined by increments of function F ( t i ).
More Like This:
Inventors:
Rubin Mikhail Semenovich
Svilyaev Yuri Vladimirovich
Svilyaev Yuri Vladimirovich
Application Number:
JP2016506286A
Publication Date:
October 18, 2017
Filing Date:
April 02, 2014
Export Citation:
Assignee:
Heelby Corporation
International Classes:
A61B5/16; A61B5/11; A61B5/352
Domestic Patent References:
| JP2003260040A |
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office
Previous Patent: A pump provided with an electric motor
Next Patent: MULTICORE FIBER WITH RARE EARTH ELEMENT ADDED
Next Patent: MULTICORE FIBER WITH RARE EARTH ELEMENT ADDED