Abstract: There is provided an air mat device comprising a mat unit that has an air cell; an air supply and exhaust unit that supplies air to the air cell and exhausts the air from the air cell; and a control unit that acquires a state change quantity of the air cell or a time required for a state change of the air cell, as a control reference value, and that controls the air supply and exhaust unit in accordance with the control reference value. There is also provided an internal pressure control method of an air cell according to the above configuration.

Abstract: A body state determination device includes a detection unit that is configured to detect a plurality of pressure distributions formed by a body weight of a user, and a determination unit that is configured to determine a state of a body of the user by comparing the plurality of pressure distributions detected by the detection unit with each other.

Abstract: There is provided an air mat device comprising a mat unit that has an air cell; an air supply and exhaust unit that supplies air to the air cell and exhausts the air from the air cell; and a control unit that acquires a state change quantity of the air cell or a time required for a state change of the air cell, as a control reference value, and that controls the air supply and exhaust unit in accordance with the control reference value. There is also provided an internal pressure control method of an air cell according to the above configuration.

Abstract: According to embodiments, an air mattress includes an air cell unit including an air cell, and a controller that controls an internal pressure in the air cell. The controller conducts a first operation when the internal pressure in the air cell satisfies the second condition after having satisfied a first condition. The first condition includes the internal pressure becoming from a first value to a second value lower than the first value, a difference between the first value and the second value being equal to or more than a first threshold, and a change rate relative to time of the internal pressure from the first value to the second value being equal to or more than a second threshold. The second condition includes, after the internal pressure has lowered from the first value to the second value, the internal pressure becoming a third value lower than the second value, and a difference between the second value and the third value being equal to or more than a third threshold.

Abstract: According to embodiments, an air mattress includes an air cell unit and a controller. The air cell unit includes a first air cell and a second air cell. The controller is capable of independently controlling a first internal pressure in the first air cell and a second internal pressure in the second air cell. The controller performs, when receiving an input to change the second internal pressure, after a first operation to set the first internal pressure to a first set internal pressure determined related to the first air cell, a second operation to change the second internal pressure.

Abstract: According to embodiments, an air mattress includes an air cell unit including an air cell, and a controller that controls an internal pressure in the air cell. The controller conducts a first operation when the internal pressure in the air cell satisfies the second condition after having satisfied a first condition. The first condition includes the internal pressure becoming from a first value to a second value lower than the first value, a difference between the first value and the second value being equal to or more than a first threshold, and a change rate relative to time of the internal pressure from the first value to the second value being equal to or more than a second threshold. The second condition includes, after the internal pressure has lowered from the first value to the second value, the internal pressure becoming a third value lower than the second value, and a difference between the second value and the third value being equal to or more than a third threshold.

Abstract: A mattress including air cells that are located on both sides of a user, in which the air cells each have a convex shape on a first side surface, and the air cells are arranged so that the convex shapes thereof are respectively located near shoulder blade outer edges of the user.

Abstract: A mattress including: an elastic body; a sheet that is disposed at least above the elastic body and made of any of a conductive sheet and a conductive fiber; and a measurement unit that is configured to measure a change of capacitance of the sheet observed when the elastic body is deformed.

Abstract: According to embodiments, an air mattress includes an air cell unit and a controller. The air cell unit includes a first air cell and a second air cell. The controller is capable of independently controlling a first internal pressure in the first air cell and a second internal pressure in the second air cell. The controller performs, when receiving an input to change the second internal pressure, after a first operation to set the first internal pressure to a first set internal pressure determined related to the first air cell, a second operation to change the second internal pressure.

Abstract: According to the embodiments, an air mattress includes an air cell unit, a first side edge unit, and a first pump unit. The air cell unit includes a plurality of air cells that are arranged along a first direction. The first side edge unit includes a polymeric foam. A direction from the first side edge unit to a first portion of the air cell unit is along a second direction that intersects the first direction. The first pump unit performs supply and exhaust of air to and from at least a part of the plurality of the air cells. A direction from the first pump unit to a second portion of the air cell unit is along the second direction. A direction from the first side edge unit to the first pump unit is along the first direction.

Abstract: According to embodiments, an air mattress includes an air cell unit including an air cell, and a controller that controls an internal pressure in the air cell. The controller conducts a first operation when the internal pressure in the air cell satisfies the second condition after having satisfied a first condition. The first condition includes the internal pressure becoming from a first value to a second value lower than the first value, a difference between the first value and the second value being equal to or more than a first threshold, and a change rate relative to time of the internal pressure from the first value to the second value being equal to or more than a second threshold. The second condition includes, after the internal pressure has lowered from the first value to the second value, the internal pressure becoming a third value lower than the second value, and a difference between the second value and the third value being equal to or more than a third threshold.

Abstract: There is provided an air mat device comprising a mat unit that has an air cell; an air supply and exhaust unit that supplies air to the air cell and exhausts the air from the air cell; and a control unit that acquires a state change quantity of the air cell or a time required for a state change of the air cell, as a control reference value, and that controls the air supply and exhaust unit in accordance with the control reference value. There is also provided an internal pressure control method of an air cell according to the above configuration.

Abstract: According to embodiments, an air mattress includes an air cell unit and a controller. The air cell unit includes a first air cell and a second air cell. The controller is capable of independently controlling a first internal pressure in the first air cell and a second internal pressure in the second air cell. The controller performs, when receiving an input to change the second internal pressure, after a first operation to set the first internal pressure to a first set internal pressure determined related to the first air cell, a second operation to change the second internal pressure.

Abstract: According to embodiments, an air mattress includes an air cell unit including an air cell, and a controller that controls an internal pressure in the air cell. The controller conducts a first operation when the internal pressure in the air cell satisfies the second condition after having satisfied a first condition. The first condition includes the internal pressure becoming from a first value to a second value lower than the first value, a difference between the first value and the second value being equal to or more than a first threshold, and a change rate relative to time of the internal pressure from the first value to the second value being equal to or more than a second threshold. The second condition includes, after the internal pressure has lowered from the first value to the second value, the internal pressure becoming a third value lower than the second value, and a difference between the second value and the third value being equal to or more than a third threshold.

Abstract: There is provided an air mat device comprising a mat unit that has an air cell; an air supply and exhaust unit that supplies air to the air cell and exhausts the air from the air cell; and a control unit that acquires a state change quantity of the air cell or a time required for a state change of the air cell, as a control reference value, and that controls the air supply and exhaust unit in accordance with the control reference value. There is also provided an internal pressure control method of an air cell according to the above configuration.

Abstract: A mattress including air cells that are located on both sides of a user, in which the air cells each have a convex shape on a first side surface, and the air cells are arranged so that the convex shapes thereof are respectively located near shoulder blade outer edges of the user.

Abstract: A mattress including air cells that are located on both sides of a user, in which the air cells each have a convex shape on a first side surface, and the air cells are arranged so that the convex shapes thereof are respectively located near shoulder blade outer edges of the user.

Abstract: A body state determination device includes a detection unit that is configured to detect a plurality of pressure distributions formed by a body weight of a user, and a determination unit that is configured to determine a state of a body of the user by comparing the plurality of pressure distributions detected by the detection unit with each other.

Abstract: A body state determination device includes a detection unit that is configured to detect a plurality of pressure distributions formed by a body weight of a user, and a determination unit that is configured to determine a state of a body of the user by comparing the plurality of pressure distributions detected by the detection unit with each other.

Abstract: A mattress including: an elastic body; a sheet that is disposed at least above the elastic body and made of any of a conductive sheet and a conductive fiber; and a measurement unit that is configured to measure a change of capacitance of the sheet observed when the elastic body is deformed.