| 摘要 |
A pulsed wave signal and the occurrence of movements of the extremities of a person are recorded during sleep with the aid of a pulsed wave sensor and an accelerometer, which are attached to the person's body. At specified intervals of time &Dgr;ti , RR interval values and the breathing frequency are measured on the basis of the pulsed wave signal. The measurements produced are used to determine the average - P1 , the minimum - P2 and the maximum - P3 RR interval values, the root-mean-square deviation of the RR intervals - P4 , the average breathing frequency value - P5 and the average number of movements of the extremities of the person - Р6 . Furthermore, the values of the function F( &Dgr;ti) are determined: F( &Dgr;ti)=-K1P1-K2P2-K3P3+K4P4+K5P5+K6P6, where K1-K6 are weighting coefficients characterizing the contribution made by a corresponding parameter to the value of the function F( &Dgr;ti ), and, on the basis of increases in the function F( &Dgr;ti), a judgment is made regarding the onset and the end of the sleeping phase which is favourable for waking up. The invention solves the problem of producing a simple and reliable method for determining a sleeping phase which is favourable for waking up the person, for the implementation of which method it would be possible to use technical means which are easily attachable to the person and do not disturb said person while sleeping. |
