Abstract: A biological state monitoring system (100) for monitoring a biological state of a subject on a bed (BD) over a predetermined monitoring period, includes: at least one load detector (11, 12, 13, 14) configured to detect a load of the subject on the bed; and a respiratory rate estimating unit (34) configured to successively obtain and output estimated values of a respiratory rate of the subject, based on a temporal variation of a detection value of the load detector. The monitoring period includes a body motion period in which the subject has a body motion, and a resting period in which the subject merely performs a respiration.

Abstract: There is provides a biological condition determining apparatus for determining a biological condition of a subject on a bed. A biological condition determining apparatus includes a plurality of load detectors which are placed in the bed or under feet of the bed and which detect a load of the subject, a biological information extracting unit which extracts biological information from an output of at least one of the load detectors, a determining unit which determines the biological condition of the subject by comparing the extracted biological information with a referential information prepared beforehand, and an output unit which outputs the biological condition of the subject determined by the determining unit.

Abstract: A biological state monitoring system (100) for monitoring a biological state of a subject on a bed (BD) over a predetermined monitoring period, includes: at least one load detector (11, 12, 13, 14) configured to detect a load of the subject on the bed; and a respiratory rate estimating unit (34) configured to successively obtain and output estimated values of a respiratory rate of the subject, based on a temporal variation of a detection value of the load detector. The monitoring period includes a body motion period in which the subject has a body motion, and a resting period in which the subject merely performs a respiration.

Abstract: A sleeping/waking determining system (100) configured to determine whether a subject on a bed (BD) is in a sleeping state or in a waking state, includes: a load detector (11) configured to detect a load of the subject on the bed; and a determining unit (33) configured to determine whether the subject is in the sleeping state or in the waking state, based on a comparison between a threshold value and a value obtained by performing a time-integration of a standard deviation of a temporal variation of the load of the subject.

Abstract: There is provided a biological information monitoring system for monitoring biological information of a subject on a bed, the system comprising: detectors which detect load of the subject; a center of gravity position calculating unit which acquires temporal variation of a center of gravity position of the subject based on the detected load; a body motion information determining unit which acquires information on body motion of the subject based on the acquired temporal variation; and a respiratory rate calculating unit which calculates a respiratory rate of the subject based on the acquired temporal variation and the information on the body motion of the subject. The body motion information includes information on large and small body motions of the subject, and the body motion information determining unit includes first and second body motion information determining units which determine the information on the large and small body motions of the subject, respectively.

Abstract: A bed monitoring system for monitoring a subject on a bed includes: a plurality of load detectors which are to be placed in the bed or under legs of the bed and which are configured to detect a load of the subject; a center of gravity position calculating unit configured to obtain a temporal variation of a center of gravity position of the subject based on the detected load of the subject; a body motion information determining unit configured to obtain a body motion information based on the obtained temporal variation of the center of gravity position of the subject, the body motion information being an information on a movement of a whole or a part of the whole body of the subject different from a movement caused by a respiration of the subject; a respiratory rate calculating unit configured to calculate a respiratory rate of the subject based on the obtained temporal variation of the center of gravity position of the subject and the body motion information obtained by the body motion information determining

Abstract: There is provided a body state detecting apparatus for detecting a body state of a subject on a bed, the apparatus including: a plurality of load detectors which are placed in the bed or under feet of the bed and which detect a load variation depending on a respiration of the subject; and a body state detecting unit which determines an extending direction of a body axis of the subject and a head placement of the subject based on the detected load variation. The body state detecting unit includes a body axis direction determining unit which determines the extending direction of the body axis of the subject based on the detected load variation, and a head placement determining unit which determines the head placement of the subject, in the determined extending direction of the body axis of the subject, based on the detected load variation.

Abstract: There is provided a biological information monitoring system for monitoring biological information of a subject on a bed, the system comprising: detectors which detect load of the subject; a center of gravity position calculating unit which acquires temporal variation of a center of gravity position of the subject based on the detected load; a body motion information determining unit which acquires information on body motion of the subject based on the acquired temporal variation; and a respiratory rate calculating unit which calculates a respiratory rate of the subject based on the acquired temporal variation and the information on the body motion of the subject. The body motion information includes information on large and small body motions of the subject, and the body motion information determining unit includes first and second body motion information determining units which determine the information on the large and small body motions of the subject, respectively.

Abstract: An apparatus for determining a respiratory condition, including: a signal acquiring section which is configured to acquire a signal corresponding to a respiratory flow of a subject; a first index producing section which is configured to produce a first index related to the respiratory flow of the subject obtained from the signal; a second index producing section which is configured to produce a second index related to a respiratory demand of the subject predicted from the first index; a third index producing section which is configured to produce a third index related to a respiratory effort of the subject based on the first index and the second index; and an outputting section which is configured to output the third index.

Abstract: There is provides a biological condition determining apparatus for determining a biological condition of a subject on a bed. A biological condition determining apparatus includes a plurality of load detectors which are placed in the bed or under feet of the bed and which detect a load of the subject, a biological information extracting unit which extracts biological information from an output of at least one of the load detectors, a determining unit which determines the biological condition of the subject by comparing the extracted biological information with a referential information prepared beforehand, and an output unit which outputs the biological condition of the subject determined by the determining unit.

Abstract: There is provided a body state detecting apparatus for detecting a body state of a subject on a bed, the apparatus including: a plurality of load detectors which are placed in the bed or under feet of the bed and which detect a load variation depending on a respiration of the subject; and a body state detecting unit which determines an extending direction of a body axis of the subject and a head placement of the subject based on the detected load variation. The body state detecting unit includes a body axis direction determining unit which determines the extending direction of the body axis of the subject based on the detected load variation, and a head placement determining unit which determines the head placement of the subject, in the determined extending direction of the body axis of the subject, based on the detected load variation.

Abstract: An apparatus for determining a respiratory condition, the apparatus includes: a signal acquirer which is configured to acquire a signal waveform corresponding to a respiratory flow of a subject; a differential calculator which is configured to acquire a differential waveform which is obtained by performing differentiation of the signal waveform; and a first determiner which is configured to determine that inspiratory flow limitation occurs in the subject, when the differential waveform satisfies a predetermined condition in a portion of the signal waveform, which corresponds to inspiration of the subject.

Abstract: An apparatus for determining a respiratory condition, includes: a signal acquiring section which is configured to acquire a signal corresponding to a respiratory flow of a subject; a first index producing section which is configured to produce a first index related to the respiratory flow of the subject obtained from the signal; a second index producing section which is configured to produce a second index related to a respiratory demand of the subject predicted from the first index; a third index producing section which is configured to produce a third index related to a respiratory effort of the subject based on the first index and the second index; and an outputting section which is configured to output the third index.

Abstract: An apparatus for determining a respiratory condition, the apparatus includes: a signal acquirer which is configured to acquire a signal waveform corresponding to a respiratory flow of a subject; a differential calculator which is configured to acquire a differential waveform which is obtained by performing differentiation of the signal waveform; and a first determiner which is configured to determine that inspiratory flow to limitation occurs in the subject, when the differential waveform satisfies a predetermined condition in a portion of the signal waveform, which corresponds to inspiration of the subject.