1. A device for monitoring a physiological signal, the monitoring device (1) comprising: a module (2) for providing a physiological signal for providing a periodic physiological signal, - a segmentation module (4) for determining signal segments from the physiological signal that correspond to periods of the physiological signal, - a classification module (5) for classifying signal segments into a valid class and an unreliable class based on characteristics related to signal segments - module (7) for determining physiol logical information to determine physiological information from at least one of the following: i) signal segments classified into an authentic class, and ii) signal segments classified into an invalid class. 2. The monitoring device according to claim 1, wherein the segmentation module (4) is configured to: - detect troughs in the physiological signal, - determine the signal segment as a segment of the physiological signal between two adjacent troughs. 3. The monitoring device according to claim 1, wherein the segmentation module (4) is configured to: - detect cavities in the physiological signal, - apply a series of defined rules to the characteristics of the physiological signal around the detected cavities, and this series of rules determines whether the detected cavity is the beginning or the end the period of the physiological signal, based on the characteristics of the physiological signal around the detected troughs, - discarding detected troughs that do not determine the beginning or end of the period, - determining segments that signal as a segment of a physiological signal between two adjacent1. Устройство для мониторинга физиологического сигнала, причем устройство (1) мониторинга содержит:- модуль (2) обеспечения физиологического сигнала для обеспечения периодического физиологического сигнала,- модуль (4) сегментации для определения сегментов сигнала из физиологического сигнала, которые соответствуют периодам физиологического сигнала,- мод
