System for monitoring sleep efficiency
First Claim
1. A system for monitoring sleep efficiency, comprising:
- a measuring device for measuring body temperature of a subject and for outputting temperature data associated with the body temperature; and
a data processing device coupled with said measuring device for receiving the temperature data therefrom, and programmed to process the temperature data so as to determine sleep efficiency;
wherein the processing of the temperature data includes constructing a curve of the body temperature over a sleep episode, finding a saddle point of the curve occurring for a first time, treating a time instance at which the saddle point occurs as a sleep-onset time point at which the subject falls asleep, and determining the sleep efficiency according to the sleep-onset time point;
wherein said data processing device is programmed to process the temperature data to further define an into-bed time point as a time instance at which said measuring device is activated to measure the body temperature of the subject, and said data processing device determines the sleep efficiency based on the into-bed time point and the sleep-onset time point;
wherein said processing device is further programmed to;
obtain an initial degree of the body temperature at the into-bed time point;
determine an awakening time point at which the subject awakens from sleep as a time instance when the body temperature rises and stays above the initial degree until the end of the sleep episode; and
calculate a total sleep time based on the into-bed time point and the awakening time point.
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Abstract
A system for monitoring sleep efficiency includes a measuring device and a data processing device. The measuring device is for measuring body temperature of a subject and for outputting temperature data associated with the body temperature. The data processing device receives the temperature data, and is programmed to process the temperature data so as to determine sleep efficiency. The processing of the temperature data includes constructing a curve of the body temperature over asleep episode, finding a saddle point of the curve occurring for a first time, treating a time instance at which the saddle point occurs as a sleep-onset time point at which the subject falls asleep, and determining the sleep efficiency according to the sleep-onset time point.
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Citations
6 Claims
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1. A system for monitoring sleep efficiency, comprising:
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a measuring device for measuring body temperature of a subject and for outputting temperature data associated with the body temperature; and a data processing device coupled with said measuring device for receiving the temperature data therefrom, and programmed to process the temperature data so as to determine sleep efficiency; wherein the processing of the temperature data includes constructing a curve of the body temperature over a sleep episode, finding a saddle point of the curve occurring for a first time, treating a time instance at which the saddle point occurs as a sleep-onset time point at which the subject falls asleep, and determining the sleep efficiency according to the sleep-onset time point; wherein said data processing device is programmed to process the temperature data to further define an into-bed time point as a time instance at which said measuring device is activated to measure the body temperature of the subject, and said data processing device determines the sleep efficiency based on the into-bed time point and the sleep-onset time point; wherein said processing device is further programmed to; obtain an initial degree of the body temperature at the into-bed time point; determine an awakening time point at which the subject awakens from sleep as a time instance when the body temperature rises and stays above the initial degree until the end of the sleep episode; and calculate a total sleep time based on the into-bed time point and the awakening time point. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification