JP2021074379A5 - - Google Patents

Claims (8)

A physical condition monitoring system for monitoring the physical condition of a subject on a bed,
a plurality of load detectors provided on the bed or under the legs of the bed for detecting the load of the subject;
a center-of-gravity position calculator that obtains a temporal change in the center-of-gravity position of the subject based on the detected load;
Based on the moving distance of the position of the center of gravity that moves within a predetermined time, a large body motion component that varies according to a large body motion different from breathing of the subject is determined from the temporal variation of the position of the center of gravity, and the position of the center of gravity. a large body motion component removing unit for removing the large body motion component from the temporal variation of
Based on the direction of movement of the position of the center of gravity, a small body motion component that fluctuates according to a small body motion different from respiration of the subject is determined from the temporal variation of the position of the center of gravity, and the component is determined from the temporal variation of the position of the center of gravity. a small body motion component removing unit for removing small body motion components;
A physical condition monitoring system comprising: an excretion determination unit that determines whether or not the subject excretes based on the temporal variation of the position of the center of gravity from which the large body motion component and the small body motion component are removed. An excretion component that specifies an excretion component that fluctuates according to excretion of the subject from the temporal variation of the position of the center of gravity from which the large body motion component and the small body motion component are removed, based on the moving distance of the position of the center of gravity. 2. The physical condition monitoring system of claim 1, further comprising an identification unit. An excretion component that varies according to excretion of the subject from the temporal variation of the position of the center of gravity from which the large body motion component and the small body motion component are removed, based on the detected frequency of the temporal variation of the load. 2. The physical condition monitoring system according to claim 1, further comprising an excretion component identification unit that identifies a. further comprising a humidity sensor provided on the bed to detect the humidity on the bed;
The excretion determination unit determines whether or not the subject excretes based on the temporal variation of the position of the center of gravity from which the large body motion component and the small body motion component are removed, and the detected value of the humidity sensor. A physical condition monitoring system according to any one of claims 1-3. 5. The excretion determination unit according to claim 4, wherein when the detection value of the humidity sensor increases within a predetermined period after the position of the center of gravity has changed due to excretion by the subject, the excretion determination unit determines that the subject has excreted. physical condition monitoring system. A physical condition monitoring system for monitoring the physical condition of a subject on a bed,
a plurality of load detectors provided on the bed or under the legs of the bed for detecting the load of the subject;
a center-of-gravity position calculator that obtains a temporal change in the center-of-gravity position of the subject based on the detected load;
a body movement determination unit that determines the presence or absence of a large body movement that accompanies movement of the trunk of the subject based on temporal changes in the position of the center of gravity of the subject;
a humidity detector provided on the bed for detecting humidity on the bed;
an excretion determination unit that determines whether or not the subject excretes based on the determination result of the body movement determination unit and the detection value of the humidity detector ;
The excretion judging unit determines that, when the detected value of the humidity sensor increases and the subject does not make a large body movement within a predetermined period preceding the time when the detected value increases, A physical condition monitoring system that determines that there has been excretion . The physical condition according to any one of claims 1 to 6 , wherein the plurality of load detectors are four load detectors respectively installed under four legs provided at four corners of the bed. monitoring system. bed and
A bed system comprising a physical condition monitoring system according to any one of claims 1-7 .