Bed device
First Claim
1. A bed device comprising:
- load measurement means for detecting a load of a bed unit and generating a load signal;
first computation means for computing a center-of-gravity variation of said bed unit on the basis of said load signal;
first determination means for determining whether the center-of-gravity variation computed by the first computation means is equal to or greater than a first threshold value;
totaling means for totaling, over the course of a plurality of time periods backward from a specific time, the number of times that the center-of-gravity variation computed by said first computation means is determined to be equal to or greater than said first threshold value in each of fixed time periods;
second computation means for multiplying the totaling results of said totaling means by coefficients established for each of said time periods and adding the results; and
second determination means for determining a waking or sleeping state or determining a body movement or rest state of a user on said bed unit, on the basis of whether a computation result of the second computation means is equal to or greater than a second threshold value.
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Accused Products
Abstract
A bed device has a load measurement unit for generating a load signal; a first computation unit for computing a center-of-gravity variation or load variation on the basis of the load signal; a first determination unit for determining whether the computation result for the center-of-gravity variation or load variation is equal to or greater than a first threshold value; a totaling unit for totaling the number of times that the computation result is determined to be equal to or greater than the first threshold value; a second computation unit for multiplying the totaling results by coefficients for each time period and adding the results; and a second determination unit or determining a waking or sleeping state or determining a body movement or rest state of a user on the basis of whether a computation result of the second computation unit is equal to or greater than a second threshold value.
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Citations
15 Claims
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1. A bed device comprising:
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load measurement means for detecting a load of a bed unit and generating a load signal; first computation means for computing a center-of-gravity variation of said bed unit on the basis of said load signal; first determination means for determining whether the center-of-gravity variation computed by the first computation means is equal to or greater than a first threshold value; totaling means for totaling, over the course of a plurality of time periods backward from a specific time, the number of times that the center-of-gravity variation computed by said first computation means is determined to be equal to or greater than said first threshold value in each of fixed time periods; second computation means for multiplying the totaling results of said totaling means by coefficients established for each of said time periods and adding the results; and second determination means for determining a waking or sleeping state or determining a body movement or rest state of a user on said bed unit, on the basis of whether a computation result of the second computation means is equal to or greater than a second threshold value. - View Dependent Claims (3, 4, 5, 6, 10, 11, 13, 14, 15)
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2. A bed device comprising:
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load measurement means for detecting a load of a bed unit and generating a load signal; first computation means for computing a load variation of said bed unit on the basis of said load signal; first determination means for determining whether the load variation computed by the first computation means is equal to or greater than a first threshold value; totaling means for totaling, over the course of a plurality of time periods backward from a specific time, the number of times that the load variation computed by said first computation means is determined to be equal to or greater than said first threshold value in each of fixed time periods; second computation means for multiplying the totaling results of said totaling means by coefficients established for each of said time periods and adding the results; and second determination means for determining a waking or sleeping state or determining a body movement or rest state of a user on said bed unit, on the basis of whether a computation result of the second computation means is equal to or greater than a second threshold value. - View Dependent Claims (7, 8, 9, 12)
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Specification