Respiratory monitoring system
First Claim
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1. A respiratory monitoring system, comprising:
- a plurality of sensors that produces weight signals corresponding to forces applied by a person under respiratory monitoring during sleep;
a respiratory signal producing means that produces a respiratory signal representing respiratory conditions of the person based on the weight signals; and
a sensor selecting means that selects sensors have output signals higher than a predetermined level from all sensors, wherein the respiratory signal producing means produces the respiratory signal based on the weight signals outputted from the sensors that are selected by the sensor selecting means; and
the sensor selecting means further selects the sensors have output signals related to a respiratory body movement of the person from the selected sensors based on a comparison of signal levels between a respiration frequency band corresponding to the respiratory body movement and another frequency band.
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Abstract
A microcomputer included in a respiratory monitoring system selects sensors that have output signals related to respiration of a person from sensors detecting forces applied by the person. To select the sensors, levels of the signals are compared between a respiratory frequency band and another frequency band. If the level of the signal in the respiratory frequency band is predetermined times higher than that of the signal in the other frequency band, the sensor is selected. The respiratory curve is produced based on weight signals outputted from the selected sensors.
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Citations
28 Claims
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1. A respiratory monitoring system, comprising:
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a plurality of sensors that produces weight signals corresponding to forces applied by a person under respiratory monitoring during sleep;
a respiratory signal producing means that produces a respiratory signal representing respiratory conditions of the person based on the weight signals; and
a sensor selecting means that selects sensors have output signals higher than a predetermined level from all sensors, wherein the respiratory signal producing means produces the respiratory signal based on the weight signals outputted from the sensors that are selected by the sensor selecting means; and
the sensor selecting means further selects the sensors have output signals related to a respiratory body movement of the person from the selected sensors based on a comparison of signal levels between a respiration frequency band corresponding to the respiratory body movement and another frequency band. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 18, 19)
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11. A respiratory monitoring system for a sleep apnea syndrome examination comprising:
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a respiratory signal producing means that produces a respiratory signal representing a variation in weight applied due to a respiratory body movement of a person under the sleep apnea syndrome examination;
a determination means that detects apnea or hypopnea of the person based on a variation in frequency of the respiratory signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification