| 摘要 |
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 ). |
