JP2018126206A - Body support device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body support device which can efficiently fit a mat part to a body of a user.SOLUTION: A body support device 1 comprises: a mat part 11 having plural fluid cells 12, 13 capable of storing fluid; a supply discharge part 15 for performing supply of a fluid to the respective fluid cell and discharge of the fluid from the fluid cells; a pressure distribution detection part 16 which is provided on the mat part and detects a pressure distribution which is applied to the mat part by a weight of a user P; and a fluid adjustment part 19 for, using at least one of a partial pressure distribution by a first portion of a body of a user, a load by a partial pressure distribution, and an area where a weight of a user acts from the first portion to the pressure distribution detection part, as an index, driving the supply discharge part for supplying or discharging the fluid to the fluid cell corresponding to a second portion of a body of a user.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a body support device for supporting a user's body.

2. Description of the Related Art Conventionally, body support devices such as air mat devices and chairs that support a user's body are known. For example, the air mat device includes a mat portion having a plurality of air cells (fluid cells). As this type of air mat device, for example, there is a device disclosed in Patent Document 1.
The air mat device supplies or discharges air (fluid) into a plurality of air cells to make the upper surface of the mat portion a desired shape. Thereby, the pressure distribution (body pressure distribution) of the force which the user who sleeps on a mat part acts on a mat part can be adjusted.

JP-T-2002-528175

An air cell with a larger pressure acting on the user presses the user more strongly. When the air cell is contracted, the pressure acting on the user is dispersed.
In general, the body pressure is dispersed by contracting the air cell in which the maximum pressure is applied.
However, in the conventional air mat apparatus, the mat portion cannot be fitted to the user's body.

  This invention is made | formed in view of such a problem, Comprising: It aims at providing the body support apparatus which can make a mat | matte part fit efficiently to a user's body.

In order to solve the above problems, the present invention proposes the following means.
(1) A body support device according to the present invention includes a mat portion having a plurality of fluid cells capable of containing a fluid; supplying the fluid to each fluid cell and discharging the fluid from the fluid cell. A supply / discharge section; a pressure distribution detection section that is provided in the mat section and detects a pressure distribution applied to the mat section by the weight of the user; The supply / discharge unit is driven while using as an index at least one of pressure distribution, a load due to the partial pressure distribution, and an area where the weight of the user acts on the pressure distribution detection unit from the first part. A fluid adjusting unit that operates by supplying or discharging the fluid to or from the fluid cell corresponding to the second part of the user's body.

According to this invention, the fluid adjustment unit supplies or discharges fluid to or from the fluid cell corresponding to the second part of the user's body while using the partial pressure distribution or the like related to the first part of the user's body as an index. To do. For this reason, a mat part can be made to fit a user's body.
Further, by supplying or discharging the fluid, the shape of the plurality of fluid cells as a whole changes, and the posture of the user can be changed.

(2) The body support device according to (1), wherein the fluid adjustment unit drives the supply / discharge unit based on the index to operate the fluid cell, and the fluid cell to be operated Different fluid cells may vary the pressure applied by the user.
According to the present invention, the pressure of the fluid cell to be operated is changed to change the pressure of the fluid cell different from the fluid cell to be operated, thereby changing the pressure of the fluid cell over a wider range. The mat portion can be effectively fitted to the body.

(3) In the body support device according to (2), the fluid adjustment unit may operate the fluid cell in which the pressure is equal to or less than a predetermined value.
According to the present invention, the fluid is supplied to or discharged from the fluid cell that has been detected by the pressure distribution detection unit so far that the pressure is equal to or lower than the predetermined value, and the fluid cell is expanded or contracted. Thereby, a user's body pressure can be disperse | distributed more efficiently.

(4) The body support device according to (2) or (3), in which the fluid adjustment unit operates the fluid cell in which the pressure is not maximum, and the pressure in the fluid cell in which the pressure is maximum May be changed.
According to the present invention, the pressure in the fluid cell having the maximum pressure can be changed without directly operating the fluid cell having the maximum pressure.

(5) The body support device according to any one of (1) to (4), further including an internal pressure detection unit that detects internal pressures of the plurality of fluid cells; For the fluid cell to be operated, the supply / discharge unit may be driven so that a preset internal pressure stored in advance is equal to an internal pressure detected by the internal pressure detection unit.
According to this invention, since the target for adjusting the internal pressure of the fluid cell to be operated is stored in advance as the set internal pressure, the internal pressure of the fluid cell to be operated can be quickly adjusted.

(6) The body support apparatus according to (5), in which a plurality of combinations of the existing pressure distribution acquired in advance and the set internal pressure set in association with the existing pressure distribution are stored and stored A storage unit; and a selection unit that selects the existing pressure distribution closest to the detection result of the pressure distribution detection unit from among the plurality of existing pressure distributions; and the fluid adjustment unit is configured to perform the operation For the fluid cell, the supply / discharge unit may be driven so that the set internal pressure corresponding to the existing pressure distribution selected by the selection unit is equal to the internal pressure detected by the internal pressure detection unit.
According to this invention, based on the set internal pressure corresponding to the existing pressure distribution closest to the detection result among a plurality of sets of existing pressure distributions and set internal pressures stored in the existing information storage unit, the fluid cell to be operated is fluidized. Can be supplied or discharged.

(7) The body support apparatus according to (5), wherein the determination unit determines the state of the user's body based on the detection result of the pressure distribution detection unit; the state of the body; and the body A plurality of combinations of the set internal pressures set in association with the state of the existing information stored therein, and the stored information stored in the existing information storage unit; A selection unit that selects the physical state closest to the determined physical state; and the fluid adjustment unit corresponds to the physical state selected by the selection unit for the fluid cell to be operated. The supply / discharge unit may be driven so that the set internal pressure is equal to the internal pressure detected by the internal pressure detection unit.
According to this invention, based on the set internal pressure corresponding to the state of the body closest to the detection result of the pressure distribution detection unit among the plurality of sets of body states and the set internal pressure stored in the existing information storage unit, the operation is performed. Fluid can be supplied to or discharged from the fluid cell.

(8) The body support device according to any one of (5) to (7), wherein the fluid adjustment unit is configured to supply the discharge unit until an internal pressure of the fluid cell to be operated reaches the set internal pressure. When the pressure acting on the fluid cell that desires to change the internal pressure of the fluid cell to be operated is changed from the pressure applied by the user in the process of driving is minimized. The internal pressure may be set to.
According to the present invention, in the process of driving the supply / discharge section, the internal pressure of the fluid cell to be operated can be adjusted to the state when the pressure acting on the fluid cell desired to change the pressure is minimized. it can.

(9) The body support device according to any one of (1) to (8), wherein the fluid adjustment unit drives the supply / discharge unit to the fluid cell corresponding to the first part. On the other hand, the fluid may be supplied or discharged for operation.
According to the present invention, not only the fluid cell corresponding to the second part but also the fluid cell corresponding to the first part is supplied or discharged, thereby changing the pressure of the fluid cell over a wider range, and The mat portion can be effectively fitted to the body.

(10) Another body support device according to the present invention includes a mat portion having a plurality of fluid cells capable of containing a fluid; supply of the fluid to each fluid cell and discharge of the fluid from the fluid cell. A supply / discharge section that is provided on the mat section, and a pressure distribution detection section that detects a pressure distribution applied to the mat section by a user's weight; drives the supply / discharge section to the fluid cell A fluid adjusting unit that operates by supplying or discharging the fluid; an internal pressure detecting unit that detects internal pressures of the plurality of fluid cells; and an existing pressure distribution acquired in advance and set in association with the existing pressure distribution A plurality of combinations of the set internal pressures of the fluid cells and the stored existing information storage unit; and the existing pressure distribution closest to the detection result of the pressure distribution detection unit is selected from the plurality of existing pressure distributions Do The fluid adjustment unit is configured to determine, for the fluid cell to be operated, the set internal pressure corresponding to the existing pressure distribution selected by the selection unit and an internal pressure detected by the internal pressure detection unit. The supply / discharge unit is driven so as to be equal.
According to the present invention, for example, the pressure distribution detection unit detects the pressure distribution among a plurality of sets of existing pressure distributions and set internal pressures stored in the existing information storage unit only by detecting the pressure distribution of the user once by the pressure distribution detection unit. The fluid can be supplied to or discharged from the fluid cell to be operated based on the set internal pressure corresponding to the existing pressure distribution closest to the detection result of the part. Since the preset internal pressure stored in advance is selected from the detection result, the mat portion can be fitted to the user's body.
If the pressure distribution is detected once, then it is not necessary to operate by supplying or discharging the fluid using the index.

  According to the body support apparatus of the present invention, the mat portion can be efficiently fitted to the user's body.

It is a side view showing a schematic structure of an air mat device of a 1st embodiment of the present invention. It is a top view which shows schematic structure of the air mat apparatus. It is a flowchart which shows the operation | movement which disperse | distributes the body pressure of the air mat apparatus. It is a side view of the principal part which shows the state of the auxiliary air cell before supplying air. It is a side view of the principal part which shows the state of the auxiliary | assistant air cell after supplying air. It is a figure showing the change of the maximum pressure with respect to the change of the internal pressure of an auxiliary | assistant air cell. It is a side view which shows schematic structure of the air mat apparatus of 2nd Embodiment of this invention. It is explanatory drawing which shows the data structure of the bundle | flux of the existing information memorize | stored in the air mat apparatus. It is a flowchart which shows the operation | movement which disperse | distributes the body pressure of the air mat apparatus. It is a side view which shows schematic structure of the air mat apparatus of 3rd Embodiment of this invention. It is a flowchart which shows the operation | movement which disperse | distributes the body pressure of the air mat apparatus. It is a side view which shows schematic structure of the air mat apparatus of 4th Embodiment of this invention. It is a flowchart which shows the operation | movement which disperse | distributes the body pressure of the air mat apparatus. It is a side view which shows schematic structure of the air mat apparatus of 5th Embodiment of this invention. It is a top view which shows schematic structure of the air mat apparatus. It is explanatory drawing which shows the data structure of the bundle | flux of the existing information memorize | stored in the air mat apparatus. It is a flowchart which shows the operation | movement which disperse | distributes the body pressure of the air mat apparatus. It is a flowchart which shows the roundness determination process in operation | movement of the air mat apparatus. It is a flowchart which shows the leg contracture determination process in operation | movement of the air mat apparatus. It is a flowchart which shows the upper body direction determination process in operation | movement of the air mat apparatus. It is a flowchart which shows the lower body direction determination process in operation | movement of the air mat apparatus. In an Example, it is a perspective view which shows the state of the user who sleeps on a sensor part. It is a figure which shows the pressure distribution which the pressure distribution detection part detected. It is a figure which shows the pressure distribution of the other user which the pressure distribution detection part detected. In an Example, it is a perspective view which shows the state of the user who is the back of a circle which lies on the sensor part before inflating an auxiliary | assistant air cell. It is a figure which shows the pressure distribution which the pressure distribution detection part detected. It is a perspective view which shows the state of the user who is a circular back which lies on the sensor part after inflating an auxiliary | assistant air cell. It is a figure which shows the pressure distribution which the pressure distribution detection part detected. In an Example, it is a perspective view which shows the state of the user who is a leg contracture which lies on the sensor part before inflating an auxiliary | assistant air cell. It is a figure which shows the pressure distribution which the pressure distribution detection part detected. It is a perspective view which shows the state of the user who is a leg contracture which lies on the sensor part after inflating an auxiliary | assistant air cell. It is a figure which shows the pressure distribution which the pressure distribution detection part detected. It is a figure explaining the auxiliary air cell in the modification of the embodiment of the present invention. It is a side view which shows schematic structure of the air mat apparatus of 6th Embodiment of this invention. It is a flowchart which shows the operation | movement which disperse | distributes the body pressure of the air mat apparatus.

(First embodiment)
Hereinafter, a first embodiment of a body support device according to the present invention will be described with reference to FIGS. 1 to 6 by taking as an example a case where the body support device is an air mat device.
The air mat device 1 of the present embodiment shown in FIGS. 1 and 2 can be used in a medical environment (including a care environment), for example. In FIG. 1 and subsequent figures, an arrow H indicates a direction on the head side with respect to the user P sleeping on the air mat device 1 in a supine position. Further, arrows F, R, and L indicate directions of the foot side, the right side (one side), and the left side (the other side) with respect to the user P sleeping in the supine position.
In the following description, a direction including the head side H and the leg side F is referred to as a head-and-foot direction (first direction) D1, and a direction including the right side R and the left side L is referred to as a left-right direction (second direction) D2. The left-right direction D2 is a direction orthogonal to (crosses) the head-foot direction D1.

  The air mat device 1 includes a mat portion 11 having a plurality of main air cells (fluid cells) 12 and auxiliary air cells (fluid cells) 13 that can store air (fluid), supply of air to the air cells 12, 13, and air cells 12, 13, a supply / discharge unit 15 that discharges air from the air 13, a pressure distribution detection unit 16 that is provided in the mat unit 11, detects a pressure distribution applied to the mat unit 11 by the weight of the user P, and the air cells 12 and 13. An internal pressure detection unit 17 that detects internal pressure, a measurement information storage unit 18 that stores internal pressures of the air cells 12 and 13, and a fluid adjustment unit 19 that drives the supply / discharge unit 15 based on the detection result of the pressure distribution detection unit 16. And.

  The mat portion 11 of the air mat device 1 is supported by, for example, a known bed device 101. Although not shown, the couch device 101 is divided into a plurality of panel members in the head and foot direction D1, and the angle of these panel members can be changed to perform back-up and leg-up (knee-up) operations. May be.

In the present embodiment, N main air cells 12 of main air cells 12 ₁ to 12 _N are provided as the plurality of main air cells 12. The main air cells 12 _{1 to} 12 _N are collectively referred to as the main air cell 12 when called without distinction. The same applies to the auxiliary air cell 13 and the like.
The configuration of the main air cell 12 is not particularly limited. In this embodiment, as shown in FIGS. 1 and 2, each main air cell 12 is a rod-like cell extending over the entire length of the mat portion 11 in the left-right direction D <b> 2. The main air cells ₁₂ 1 to 12 _N is toward the leg side F from cranial H are arranged in the order of the main air cells ₁₂ 1 to 12 _N. The plurality of main air cells 12 are arranged in the front-rear direction D <b> 1 to constitute a main mat portion 11 </ b> A that is an outer shape of the mat portion 11. The main mat portion 11A is composed of, for example, 20 to 30 main air cells 12.
Each main air cell 12 can be manufactured by welding a film made of, for example, vinyl chloride or urethane in a bag shape. The main air cells 12 arranged adjacent to the head-and-foot direction D1 may be fixed to each other or may not be fixed to each other. Each main air cell 12 can be fixed to a cover (not shown) that integrally covers the plurality of main air cells 12 via buttons, strings, or the like.
11 A of main mat parts are arrange | positioned so that it may extend along a horizontal surface.

In the present embodiment, seven auxiliary air cells 13 _{1 to} 13 ₇ are used as the auxiliary air cells 13. Each auxiliary air cell 13 is formed in a crescent shape, for example. Each auxiliary air cell 13 can be manufactured in the same manner as the main air cell 12. The number of auxiliary air cells 13 included in the mat portion 11 is not particularly limited as long as it is one or more. The shape of the auxiliary air cell 13 is not limited to the crescent shape, and the shape of each auxiliary air cell 13 may be different from each other.
As shown in FIG. 2, the auxiliary air cells 13 _1, the recess 13 1 _a is disposed such that the leg side F, for example, with extending horizontally D2. Auxiliary air cell 13 ₁ is arranged so as to be in contact with for example the neck of the user P.
Auxiliary air cells 13 _2, the recess 13 ₂ a are arranged so as to face the left side L extends in the superior-inferior direction D1. Auxiliary air cell 13 ₂ is placed in contact with the right shoulder example of the user P.
Auxiliary air cell 13 ₃ is disposed so as to face in the lateral direction D2 with respect to the auxiliary air cell 13 _2.

Auxiliary air cells 13 _4, the recess 13 ₄ a are arranged so as to face the left side L extends in the superior-inferior direction D1. Auxiliary air cells 13 ₄ are placed in contact with for example the right hip of the user P.
Auxiliary air cells 13 ₅ is disposed so as to face in the lateral direction D2 with respect to the auxiliary air cells 13 _4.
Auxiliary air cells 13 _6, recesses 13 ₆ a are arranged so as to face the left side L extends in the superior-inferior direction D1. Auxiliary air cells 13 ₆ is placed in contact with for example the right knee of a user P.
Auxiliary air cells 13 ₇ are arranged so as to face in the lateral direction D2 with respect to the auxiliary air cells 13 _6.
The auxiliary air cell 13 is disposed on the main mat portion 11A.

The configuration of the supply / discharge unit 15 is not particularly limited. As shown in FIG. 1, the supply / discharge unit 15 includes, for example, a pump 25 that supplies air to the air cells 12 and 13, an exhaust valve 26 that exhausts air from the air cells 12 and 13, an air cell 12 and 13, a pump 25, and a connection passage 27 for connecting the exhaust valves 26 in each different, a plurality of opening and closing valves _{28 1 ~28 N, 29 1 ~29} 7 for opening and closing the connection passage 27, and a.
Connecting channel 27, the main air cells ₁₂ 1 to 12 branch path and ₃₀ 1 to 30 _N, which is provided N lines corresponding to _N, the auxiliary air cells _{131-134 7} branch passage 31 ₁ provided seven to correspond to the and to 31 _7, and a common passage 32 branch passage _{30 1 ~30 N, 31 1 ~31} 7 are commonly connected, a. Branch passage 30 ₁ is connected to the main air cells 12 _1. Similarly, the branch paths 30 ₂ to 30 _N are connected to the main air cells 12 _{2 to} 12 _N , respectively. Branch passage ₃₁ 1 to 31 ₇ are connected to the auxiliary air cells _{131-134 7.}

Common path 32, and connects between the branch passage _{30 1 ~30 N, 31 1 ~31} 7 and the pump 25 and the exhaust valve 26 to each other.
Off valve 28 _1, the branch passage 30 _1, the pump 25 and the exhaust valve 26, and an open state in which communication with each other between the switches in a closed state in which the communication is canceled. Opening and closing valve _{28 2 ~28 N, 29 1 ~29} 7 also, the branch passage _{30 2 ~30 N, 31 1 ~31} 7, the pump 25 and the exhaust valve 26, a similar switching operation between.

The supply / discharge unit 15 configured as described above operates as follows.
That is, when performing air supply (supply air) for example, the main air cells 12 _1, as well as the opening and closing valve 28 ₁ in the open state, the opening and closing valve ₂₈ 2 _{~ 28 N,} 29 1 ~ 29 _7, an exhaust valve 26 Close. By driving the pump 25, the common passage 32, through the branch passage 30 _1, air is the air supply to the main air cells 12 _1. Supply air is housed in the main air cells 12 _1.
On the other hand, in the case of performing the primary air cells 12 ₁ of the exhaust (exhaust air), as well as the opening and closing valve 28 ₁ in the open state, the opening and closing valve ₂₈ 2 _{~ 28 N,} 29 1 ~ 29 ₇ in the closed state. By the exhaust valve 26 in the open state, air in the main air cells 12 _1, through the branch passage 30 ₁ and the common passage 32 and is discharged from the exhaust valve 26 to the outside.
Each main air cell 12 _{2 to} 12 _N and each auxiliary air cell 13 can be similarly supplied and exhausted.

As shown in FIGS. 1 and 2, the pressure distribution detection unit 16 includes, for example, a sensor unit 35 in which a plurality of known pressure sensors 35 a are arranged, and a processing unit 36 that processes a detection result of the sensor unit 35. Yes. The method by which the pressure sensor 35a detects the pressure is not particularly limited, and may be a capacitance type, a piezoresistive type (pressure sensitive type), a pneumatic sensor type using a bag-like film, or the like.
The plurality of pressure sensors 35a are arranged in a grid pattern, for example, along the head-and-foot direction D1 and the left-right direction D2. It should be noted that the plurality of pressure sensors 35a are not provided in a specific portion, or one pinpoint (locally) is provided at a portion corresponding to the upper body region A2, the buttocks region A3, or the waist or heel of the user P described later. Or a plurality of them may be provided.

The pressure (detection result) detected by each pressure sensor 35 a is transmitted to the processing unit 36. The relative positions between the plurality of pressure sensors 35a are held by a holding member or the like (not shown). The sensor unit 35 is formed in a sheet shape as a whole. The head-and-foot direction D1 and the left-right direction D2 described above are directions along the sensor unit 35 (the main surface 35b of the sensor unit 35).
The pressure (pressure value) is detected by each pressure sensor 35a. The pressure distribution is detected by arranging the detected pressure in a grid pattern at the position of the pressure sensor 35a.
The sensor unit 35 is disposed on the auxiliary air cell 13. The sensor unit 35 may be disposed below the main mat portion 11A.

The processing unit 36 includes an arithmetic circuit, a memory, etc. (not shown). The memory stores a control program for controlling the arithmetic circuit. The fluid adjustment unit 19 and the main control unit 42 described later can also be configured in the same manner as the processing unit 36.
The memory of the processing unit 36 stores the area occupied by each pressure sensor 35a. Further, the pressure detection result transmitted from each pressure sensor 35a is stored in this memory.
The arithmetic circuit may specify the pressure sensor 35a having the maximum detected pressure (the pressure sensor 35a that has detected the maximum pressure) from the plurality of pressures stored in the memory, based on the identification number (position) of the pressure sensor 35a. it can.
The processing unit 36 may be attached to the sensor unit 35.

A pressure sensor 39 having a known configuration is connected to the common path 32 described above. The pressure sensor 39, the connection passage 27, the opening and closing valve _{28 1 ~28 N, 29 1 ~29} 7, constituted the pressure detection unit 17 described above.
That is, in the present embodiment, one pressure sensor 39 is provided for each main air cell 12 and auxiliary air cell 13. The internal pressure detector 17 detects the internal pressure of each main air cell 12 and each auxiliary air cell 13 through the connection path 27.
For example, when the pressure detection unit 17 detects the internal pressure of the main air cells 12 _1, as well as the opening and closing valve 28 ₁ in the open state, the opening and closing valve ₂₈ 2 _{~ 28 N,} 29 1 ~ 29 _7, the exhaust valve 26 closed a manner to detect the main air cells 12 ₁ of the internal pressure.
The internal pressure detection unit may be provided corresponding to each main air cell 12 and each auxiliary air cell 13.

As shown in FIG. 1, the aforementioned pump 25, pressure sensor 39, on-off valves 28 _{1 to} 28 _N , 29 _{1 to} 29 ₇ , exhaust valve 26, common path 32, processing unit 36, measurement information storage unit 18, fluid adjustment The part 19 and a main control part 42 to be described later are accommodated in the casing 44. A bus 45 that is a transmission path provided in the casing 44 includes a pump 25, a pressure sensor 39, on-off valves 28 _{1 to} 28 _N , 29 _{1 to} 29 ₇ , an exhaust valve 26, a processing unit 36, and a measurement information storage unit 18. The fluid adjusting unit 19, the main control unit 42, and an input / output unit 46 to be described later are connected.
The control unit 48 is configured by the pump 25 and the like housed in the casing 44.

The memory of the fluid adjustment unit 19 stores in advance the main air cells 12 and auxiliary air cells 13 corresponding to the pressure sensors 35a of the pressure distribution detection unit 16, the set internal pressures of the main air cells 12 and the auxiliary air cells 13, and the like.
More specifically, the main air cell 12 and the auxiliary air cell 13 corresponding to each pressure sensor 35a mean the main air cell 12 and the auxiliary air cell 13 below each pressure sensor 35a.
The set internal pressure of each auxiliary air cell 13 is a pressure after increasing the internal pressure of each auxiliary air cell 13 which is, for example, 4 kPa (kilopascal).

When the identification number of the pressure sensor 35a that has detected the maximum pressure is transmitted from the processing unit 36, the arithmetic circuit of the fluid adjustment unit 19 transmits the identification number and each pressure sensor 35a stored in the memory and the air cells 12, 13 From the correspondence information, the air cells 12, 13 (the air cells 12, 13 having the maximum pressure applied by the user P) corresponding to the pressure sensor 35a that has detected the maximum pressure are set as target cells.
The target cell here means the air cells 12 and 13 that change the pressure applied from the user P. In other words, the target cell means the air cells 12 and 13 whose purpose is to change the pressure, and the air cells 12 and 13 whose pressure is desired to be changed.

For example, when the maximum pressure is applied to the position Q shown in FIG. 1 and FIG. 2, the fluid adjustment unit 19 is the main air cell 12 _k (k Is a natural number of 1 or more and N or less), and the main air cells 12 _{1 to} 12 _k−1 , 12 _{k + 1 to} 12 _N , which are different from the main air cell 12 _k , and the auxiliary air cell 13 are operated. Set to cell (air cell 12, 13 to be operated). For example, it is assumed that the main air cell 12 _k is the air cells 12 and 13 corresponding to the buttocks of the user P.
In addition, the fluid adjustment part 19 does not need to set an operation cell. In this case, for example, the fluid adjusting unit 19 may supply or discharge air to the air cells 12 and 13 to be operated according to a predetermined order.
Hereinafter, in order to simplify the description, it is assumed that the operation cell does not include the main air cells 12 _{1 to} 12 _k−1 and 12 _{k + 1 to} 12 _N , and is only the auxiliary air cells 13 _{1 to} 13 ₇ .
Fluid regulation unit 19, when setting the target cell and the operating cell, the pump 25, the exhaust valve 26 of the supply and discharge section 15 drives the opening and closing valve _{28 1 ~28 N, 29 1 ~29} 7, auxiliary air cells 13 To air.

  The measurement information storage unit 18 is an auxiliary storage device such as a hard disk drive. The measurement information storage unit 18 stores an initial maximum pressure and an initial internal pressure of the air cells 12 and 13 after the air mat device 1 is in an initial state to be described later. The initial maximum pressure is the maximum pressure detected by the pressure distribution detection unit 16. The initial internal pressure is the internal pressure of each air cell 12, 13 detected by the internal pressure detection unit 17.

The main control unit 42 performs general control of the air mat device 1.
The input / output unit 46 includes an input unit 46a such as a keyboard and an output unit 46b such as a liquid crystal monitor.
An instruction input from an input unit 46 a by an assistant such as a medical worker is transmitted to the fluid adjustment unit 19, the main control unit 42, and the like via the bus 45. The output unit 46b displays a display for the user P and a caregiver.

Next, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 1 of this embodiment is demonstrated. FIG. 3 is a flowchart showing the operation of dispersing the body pressure of the air mat device 1 of the present embodiment.
The outline of the operation of the air mat device 1 of the present embodiment will be described. First, the plurality of auxiliary air cells 13 are expanded in order. When the pressure applied to the main air cell 12 _k (target cell) when expanded is higher than the initial maximum pressure, for example, the internal pressure of the auxiliary air cell 13 is returned to the initial internal pressure before expansion, etc. In some cases, the internal pressure of the auxiliary air cell 13 is maintained.
Hereinafter, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 1 is demonstrated in detail.

When the assistant operates the input unit 46a, the air mat device 1 is activated. In the initial state before the user P gets on the sensor unit 35 in the supine position after the air mat device 1 is activated, the fluid adjustment unit 19 operates as follows. In other words, the fluid adjustment section 19, the exhaust valve 26 to drive the pump 25, by switching the opening and closing valve _{28 1 ~28 N, 29 1 ~29} 7, the respective main air cells 12 and the auxiliary air cell 13 in the initial state. In the initial state, the pressure of the air in each main air cell 12 is controlled to a relatively high pressure (for example, 4 to 5 kPa).
Thereby, for example, even when the user P of the maximum use load of the air mat device 1 rides in the supine position, the bottom of the user P can be suppressed.
On the other hand, in the initial state, air is not supplied into each auxiliary air cell 13 and each auxiliary air cell 13 is in a flat state.
In the initial state, the upper surface of the sensor unit 35 is substantially flat.

For example, when the user P gets on the sensor unit 35 of the pressure distribution detection unit 16 in the supine position, an initial body pressure measurement step (step S11 shown in FIG. 3) is performed.
In the initial body pressure measurement step S <b> 11, the sensor unit 35 detects a pressure distribution (body pressure distribution) applied to the mat unit 11 by the weight of the user P. The sensor unit 35 transmits the detection result of each pressure sensor 35 a to the processing unit 36. The processing unit 36 specifies the maximum pressure and the identification number of the pressure sensor 35 a that has detected the maximum pressure from the pressure distribution transmitted from the sensor unit 35. In this example, it is assumed that the processing unit 36 detects that the maximum pressure is applied to the position Q shown in FIG. The processing unit 36 transmits the maximum pressure and the identification number of the pressure sensor 35 a to the fluid adjustment unit 19.

It is assumed that the fluid adjustment unit 19 sets, for example, the main air cell _12k as a target cell and the auxiliary air cell 13 as an operation cell from the transmitted identification number of the pressure sensor 35a. Although the following describes an air supply to the order of the auxiliary air cells _{131-134 7,} the order of air supply to the auxiliary air cells _{131-134 7} is not limited thereto.
The fluid adjustment unit 19 ends the initial body pressure measurement step S11, and proceeds to step S13.

In step S13, the fluid adjustment unit 19 stores the initial maximum pressure and the initial internal pressure in the measurement information storage unit 18, and proceeds to step S14. The initial maximum pressure is the maximum pressure detected in the initial body pressure measurement step S11. The initial internal pressure is obtained by detecting the internal pressure of the air cells 12 and 13 by the internal pressure detection unit 17, and the internal pressure of the auxiliary air cell 13 is a value of about 0 kPa. The internal pressure of the main air cell 12 generally rises (becomes higher) than the aforementioned 4 to 5 kPa when the user P rides on the sensor unit 35.
In step S14, the fluid adjustment unit 19 sets the value of the variable i to 0, and proceeds to step S15.
In step S15, the value of variable i is incremented by 1, and the process proceeds to step S16. Since the value of the variable i is set to 0 in step S14, the value of the variable i becomes 1 at the end of step S15 immediately after step S14.
In step S16, the fluid adjustment unit 19 determines whether or not the auxiliary air cell 13 _i is an operation cell. If YES is determined in the step S16, the process proceeds to a step S17. On the other hand, when it is judged as NO at Step S16, it shifts to Step S15. In this example, since the auxiliary air cells 13 ₁ are operated cell, determines YES in step S16 the process proceeds to step S17.

In step S17, an individual pressure adjustment process is performed.
First, in step S18, the fluid regulation unit 19, supplies air to the auxiliary air cells 13 ₁ by driving the supply and discharge unit 15, the process proceeds to step S19. The amount of air supply to the auxiliary air cells 13 ₁ are set appropriately. The auxiliary air cell 13 that is supplying air may be shown in the output unit 46b to relieve the user P.
By performing step S18, the auxiliary air cells 13 ₁ flat state as shown in FIG. 4, a state in which the auxiliary air cell 13 ₁ is expanded as shown in FIG. 4 and 5, the sensor unit 35 is not shown.
Bulged auxiliary air cell 13 ₁ is in contact with the neck portion P1 of the user P. In this case, the proportion for supporting the body pressure of the user P in the auxiliary air cells 13 ₁ increases.

Fluid regulation unit 19, as well to supply air to the auxiliary air cells 13 ₁ by supplying and discharging unit 15, to detect the maximum pressure by the pressure distribution detection unit 16, to detect the internal pressure of the auxiliary air cells 13 ₁ by the pressure detection unit 17. Fluid regulation unit 19, in its memory, associated to the air supply to the auxiliary air cells 13 _1, as shown in FIG. 6, stores the change of the maximum pressure on the pressure of the auxiliary air cells 13 _1. The horizontal axis of FIG. 6 represents the internal pressure of the auxiliary air cells 13 _1, the ordinate represents the maximum pressure detected by the pressure distribution detection section 16.

Fluid conditioning unit 19 that is the air supply to the auxiliary air cells 13 _1, raised until the internal pressure of the auxiliary air cells 13 ₁ reaches the initial internal pressure (internal pressure P6) to the auxiliary air cells 13 ₁ setting pressure (pressure P7). In other words, the fluid adjustment unit 19, the auxiliary air cell 13 has ₁ set pressure, the internal pressure of the auxiliary air cell 13 ₁ which detects the pressure detection unit 17, so that equal, by driving the supply and discharge section 15 auxiliary air cell 13 ₁ Let the air supply.
A region R6 in which the maximum pressure on the vertical axis falls (becomes lower) than the initial maximum pressure (pressure P8) is a desirable region in which the pressure acting on the main air cell _12k decreases and the body pressure of the user P is dispersed.
In other words, the fluid adjustment unit 19 drives the supply and discharge unit 15 based on the indication that the maximum pressure by operating the auxiliary air cells 13 _1, applied from different main air cells 12 _k by the user P from the auxiliary air cells 13 ₁ to operate Change the pressure that is applied.
Step S18 is complete | finished above and it transfers to step S19.

In step S19, the fluid adjustment unit 19, the internal pressure of the auxiliary air cells 13 ₁ when the pressure acting on the main air cells 12 _k is minimized in the course of the air supply to the auxiliary air cells 13 _1, the internal pressure of the auxiliary air cells 13 ₁ Set.
In other words, the fluid adjustment unit 19, the internal pressure of the auxiliary air cells 13 ₁ drives the supply and discharge section 15 up to the set pressure. Thereafter, fluid conditioning unit 19, the internal pressure of the auxiliary air cells 13 _1, in the course of driving the supply and discharge unit 15, the internal pressure of the auxiliary air cells 13 ₁ when the pressure acting on the main air cells 12 _k is minimized, setting the internal pressure of the auxiliary air cells 13 _1.

More specifically, as shown by the curve L6 in FIG. 6, when the down without maximum pressure is increased in accordance with the internal pressure of the auxiliary air cells 13 ₁ rises, the auxiliary air cells 13 ₁ of the inner pressure of the inner pressure P7 (setting pressure) Set to.
As shown by a curve L7, if eventually be increased maximum pressure once accordance pressure of the auxiliary air cells 13 ₁ rises drops below the initial maximum pressure P8 can set the internal pressure of the auxiliary air cells 13 ₁ to internal pressure P7 To do.

As indicated by a curve L8 in Figure 6, if the up without the maximum pressure is lower depending internal pressure of the auxiliary air cells 13 ₁ goes up, the internal pressure of the auxiliary air cells 13 ₁ to set the internal force P6 (initial internal pressure) (back ).
As shown by a curve L9, when the auxiliary air cells 13 maximum pressure in accordance with the _first internal pressure is increased is minimized becomes auxiliary air cells 13 ₁ pressure P9 rises thereafter than the initial maximum pressure P8, the auxiliary air cells 13 ₁ of the internal pressure Is set to the internal pressure P9.
Thus, in any case shown by the curves L6 to L9, the maximum pressure is equal to or less than the initial maximum pressure P8.

That is, the fluid adjustment unit 19 uses the maximum pressure (partial pressure distribution) by the buttocks (first part) of the body of the user P among the pressure distributions detected by the pressure distribution detection unit 16 as an index. neck portion of the drive to the user's P body by supplying air to aid air cells 13 ₁ corresponding to the (second site) to operate. Thus, although the first part and the second part are different, the first part and the second part may be the same.
The auxiliary air cell 13 corresponding to the neck portion means the auxiliary air cell 13 disposed so as to contact the neck portion or the auxiliary air cell 13 disposed below the neck portion.
The fluid adjustment unit 19 sees the result of driving the supply / discharge unit 15. Depending on the result, the fluid adjustment unit 19, the internal pressure of the auxiliary air cells 13 ₁ By following the initial maximum pressure P8, it is possible to suppress the auxiliary air cells 13 ₁ of the internal pressure below the initial internal pressure.
Step S19 is complete | finished above and it transfers to step S20.

In step S <b> 20, the fluid adjustment unit 19 stores the initial maximum pressure and the initial internal pressure in the measurement information storage unit 18 in accordance with the air supply process.
Specifically, when the maximum pressure decreases as shown by the curves L6, L7, and L9 in FIG. Remember me.
When the maximum pressure as shown decreases in curve L6, L7, the internal pressure P7 is stored in the measurement information storage unit 18 as the initial internal pressure of the auxiliary air cells 13 _1. When the maximum pressure as shown decreases in curve L9, the pressure P9 is stored in the measurement information storage unit 18 as the initial internal pressure of the auxiliary air cells 13 _1.
On the other hand, when the maximum pressure increases as shown by the curve L8, the maximum pressure after the increase is not stored.
Above, step S20 is complete | finished and it transfers to step S21.

  In step S21, it is determined whether or not the value of the variable i is 7, which is the number of auxiliary air cells 13. When YES is determined in the step S21, all the steps of the operation of dispersing the body pressure of the air mat device 1 are finished. On the other hand, when it is judged as NO at Step S21, it shifts to Step S15. In this example, since the value of the variable i is 1, the process proceeds to step S15.

In step S15, the value of variable i is incremented by 1, and the process proceeds to step S16. Note that the value of the variable i is 2 at the end of step S15.
Then, by repeating the steps S16～19, it performs the same process as the auxiliary air cells 13 ₁ to the auxiliary air cells ₁₃ 2-13 _7.
And air supply in order to the auxiliary air cells _{131-134 7} by adjusting the amount of pressure auxiliary air cells _131-134 within ₇ terminates all the steps of the operation of dispersing the body pressure of the air mattress device 1.

Even when the operation cell includes not only the auxiliary air cell 13 but also the main air cells 12 _{1 to} 12 _k−1 and 12 _{k + 1 to} 12 _N , the pressure distribution is performed by performing the individual pressure adjustment step S17 on each operation cell. The internal pressures of the auxiliary air cells 13 and the internal pressures of the main air cells 12 _{1 to} 12 _k−1 and 12 _{k + 1 to} 12 _N are adjusted to appropriate values so that the maximum pressure detected by the detection unit 16 decreases.

As described above, according to the air mat device 1 of this embodiment, the fluid adjustment unit 19 for to supply air to the auxiliary air cells 13 ₁ while the maximum pressure in the index, mat with air cells 12, 13 11 can be fitted to the body of the user P.
Fluid regulation unit 19, varies the pressure by driving the supply and discharge unit 15 based on the maximum pressure by operating the auxiliary air cells 13, the main air cells 12 _k which is different from the auxiliary air cells 13 ₁ to operate is given from the user P Let Changing the pressure of the air cells 12 and 13 over a wider range by changing the pressure of the auxiliary air cells 13 ₁ to change the pressure of the main air cells 12 _k, effectively fit the mat portion 11 to the body of the user P Can be made.

The fluid adjustment unit 19 is different from the target cell (main air cell 12 _k ) for changing the pressure applied by the user P (main air cells 12 _{1 to} 12 _k−1 , 12 _{k + 1 to} 12 _N , auxiliary air cell 13). And the operation cell is expanded. Thereby, while the ratio which supports the body pressure of the user P with a target cell reduces, the ratio which supports with an operation cell increases. Therefore, the body pressure of the user P can be efficiently dispersed.
In addition, by expanding the auxiliary air cell 13, the shape of the air cell 12, 13 as a whole changes, and the posture of the user P sleeping on the air cell 12, 13 can be changed.
Since the fluid adjustment unit 19 sets the air cells 12 and 13 having the maximum pressure as the target cell, the body pressure of the user P supported by the target cell having the maximum pressure can be reduced and the maximum pressure can be decreased. .

Fluid regulation unit 19, and sets the internal pressure of the auxiliary air cells 13 _1, and the internal pressure of the auxiliary air cell 13 ₁ which detects the pressure detection unit 17, as are equal, drives the supply and discharge unit 15. Since the target to adjust the internal pressure of the auxiliary air cells 13 ₁ are stored in advance as a set pressure, it is possible to quickly adjust the auxiliary air cells 13 ₁ of the internal pressure.
Fluid regulation unit 19, after the internal pressure of the auxiliary air cells 13 ₁ to drive the supply and discharge section 15 up to the set pressure, the internal pressure of the auxiliary air cells 13 _1, in the course of driving the supply and discharge unit 15, the main air cells 12 _k The internal pressure of the auxiliary air cell 13 ₁ is set as the internal pressure of the auxiliary air cell 13 ₁ when the acting pressure becomes minimum. Thus, in the course of driving the supply and discharge unit 15, it is possible to pressure acting on the main air cells 12 _k is the state when it becomes the minimum, to adjust the internal pressure of the auxiliary air cells 13 _1.

In the present embodiment, the operation cell is described as the main air cells 12 _{1 to} 12 _k−1 , 12 _{k + 1 to} 12 _N , and the auxiliary air cells 13 _{1 to} 13 ₇ in the air mat device 1. Even when there is only one, it is applicable. That is, the fluid adjusting unit 19 controls to reduce the maximum pressure by supplying air to one operation cell.
In addition, the fluid adjustment unit 19 sets the air cells 12 and 13 having the maximum pressure applied by the user P as target cells. However, the method of setting the target cell is not limited to this, and the second largest air cell 12, 13 or the third largest air cell 12, 13 or the like may be set as the target cell. .
The fluid adjusting unit 19 may operate the air cells 12 and 13 whose pressure is not maximum and change the pressure in the main air cell _12k where the pressure is maximum. With this configuration, not operate the main air cells 12 _k pressure is greatest directly, it is possible to change the pressure in the main air cell 12 _k.

The fluid adjusting unit 19 may be operated by supplying air to the auxiliary air cell 13 corresponding to the collar by driving the supply / discharge unit 15.
By configuring in this way, by supplying air not only to the air cells 12 and 13 corresponding to the neck but also to the air cells 12 and 13 corresponding to the buttocks, the pressure of the air cells 12 and 13 over a wider range can be changed and used. The mat portion 11 can be effectively fitted to the body of the person P.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. 7 to FIG. explain.
As shown in FIG. 7, the air mat apparatus 2 of the present embodiment includes an existing information storage that stores a plurality of bundles of existing information including previously acquired pressure distributions in addition to the components of the air mat apparatus 1 of the first embodiment. A unit 56 and a selection unit 57 for selecting a bundle of existing information.
In the present embodiment, the set internal pressure may not be stored in the memory of the fluid adjustment unit 19.

Here, a bundle of existing information will be described.
As shown in FIG. 8, the bundle D6 of existing information includes an existing pressure distribution D6a and a set internal pressure D6b.
The existing pressure distribution D6a is a pressure distribution acquired in advance for one or a plurality of users (hereinafter referred to as previous users). The previous user may be different from the user who intends to newly use the air mat device 2 or may be the same person. The previous user gives weight to the pressure distribution detection unit 16 by riding on the sensor unit 35 of the air mat device 2, and the pressure distribution detection unit 16 detects the pressure distribution. This detected pressure distribution is defined as an existing pressure distribution D6a. The existing pressure distribution D6a is data in which, for example, pressures corresponding to a plurality of positions in the head and foot direction D1 and the left-right direction D2 of the sensor unit 35 are arranged in a matrix.
Since the existing pressure distribution D6a is data in a matrix shape with respect to the directions D1 and D2, it is expressed as (D1, D2) for convenience in this specification.

The set internal pressure D6b is data representing the pressure acquired in advance for each of the auxiliary air cells 13 _{1 to} 13 ₇ , for example. Data P _i (i is a natural number from 1 to 7) is supplied to one of the auxiliary air cells 13 _i with respect to a certain previous user, and then each auxiliary air cell 13 detected by the pressure distribution detection unit 16 is supplied. The internal pressure of _i .
In other words, the set internal pressure D6b is a record of up to which pressure each auxiliary air cell 13 is finally changed for each previous user.
In the present specification, the set internal pressure D6b is expressed as (P ₁ ,..., P ₇ ) for convenience.
In the existing information bundle D6, the existing pressure distribution D6a and the set internal pressure D6b are combined and associated with each other.

When a certain previous user uses the air mat device 2, a bundle D6 of existing information including the existing pressure distribution D6a and the set internal pressure D6b is obtained.
Among a plurality of existing information bundles D6, for example, m ₁ existing information bundles D6 are stored in a first storage unit 56a described later, and m ₂ existing information bundles D6 are stored in a second storage unit 56b described later. It is remembered. That, (D1, D2) from 1 (D1, D2) existing pressure distribution D6a to _{m 1, and, (P 1, ‥, P} 7) from _{1 (P 1, ‥, P} 7) supplied to the _{m 1} The in-cell pressure D6b is stored in the first storage unit 56a. (D1, D2) from 1 (D1, D2) existing pressure distribution D6a to _{m 2, and, (P 1, ‥, P} 7) from _{1 (P 1, ‥, P} 7) supply after cell up to _{m 2} The internal pressure D6b is stored in the second storage unit 56b.
Each existing information bundle D6 is an internal pressure of the auxiliary air cell 13 which is preferable for the user P.

In the present embodiment, as shown in FIG. 7, the existing information storage unit 56 includes a first storage unit 56 a and a second storage unit 56 b. The storage units 56a and 56b are databases, and an auxiliary storage device such as a hard disk drive can be used.
The first storage unit 56 a is connected to the fluid adjustment unit 19 via the bus 45 in a state of being disposed in the casing 44, for example. The second storage unit 56b is a device arranged on a network such as the Internet, and is connected to the bus 45 by a known wired line or wireless line.
A part of the instruction input from the input unit 46 a of the input / output unit 46 by the assistant or the like is transmitted to the existing information storage unit 56. Thereby, the assistant or the like can correct the values of the existing pressure distribution D6a of the bundle D6 of the existing information stored in the existing information storage unit 56.

The selection unit 57 includes an arithmetic circuit, a memory, etc. (not shown).
The selection unit 57 selects the existing pressure closest to the pressure distribution (detection result) detected by the pressure distribution detection unit 16 from the existing pressure distributions D6a included in the plurality of existing information bundles D6 stored in the existing information storage unit 56. A bundle D6 of existing information including the distribution D6a is selected.
A method for determining the existing pressure distribution D6a closest to the detected pressure distribution among the plurality of existing pressure distributions D6a is not particularly limited, and a known image processing method or the like can be used. For example, it can be determined by the following method.

Contour (silhouette): The detected pressure distribution and the existing pressure distribution D6a are compared with the contour shape of both pressure distributions. It means that both pressure distribution is so close that the outline shape of both pressure distribution corresponds.
Load: The detected pressure distribution and the existing pressure distribution D6a are compared with the load (weight) obtained from both pressure distributions. It means that both pressure distributions are so close that the load obtained from both pressure distributions corresponds.
Area: The detected pressure distribution and the existing pressure distribution D6a are compared with the area where the both pressure distributions are distributed (the number of pressure sensors 35a that have detected pressure). It means that both pressure distribution is so close that the area obtained from both pressure distribution corresponds.

The selection unit 57 determines the existing pressure distribution D6a closest to the detected pressure distribution among the plurality of existing pressure distributions D6a using at least one of the contour, the load, and the area. When two or more of contour, load, and area are used, for example, the sum of the results of evaluation of each contour, load, and area multiplied by a weighting factor, and two or more of contour, load, and area are used. You may evaluate how close you are.
In the present embodiment, the fluid adjustment unit 19 uses the pressure distribution (partial pressure distribution) of the whole body (first part) of the user P among the pressure distributions detected by the pressure distribution detection unit 16 as an index. The air 57 is operated by supplying air to the auxiliary air cell 13 corresponding to the second part of the user P based on the set internal pressure D6b selected by 57.

Next, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 2 of this embodiment is demonstrated. FIG. 9 is a flowchart showing an operation of dispersing the body pressure of the air mat device 2 of the present embodiment.
The outline of the operation of the air mat device 2 of the present embodiment will be described. First, a bundle D6 of existing information including an existing pressure distribution closest to the pressure distribution of the user P is read from the database. Each auxiliary air cell 13 is expanded in order to the set internal pressure D6b included in the bundle D6 of existing information, and the same operation as the air mat device 1 of the first embodiment is performed.
Hereinafter, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 2 is demonstrated in detail.

First, the initial body pressure measurement step S11 is performed as in the first embodiment, and the process proceeds to step S26. In the initial body pressure measurement step S11, the pressure distribution detection unit 16 detects the pressure distribution of the user P once.
In step S26, the selection unit 57 selects the existing information bundle D6 ₁ (see FIG. 8) based on the pressure distribution detected by the pressure distribution detection unit 16 with respect to the weight of the user P as described above. The process proceeds to S13.
Step S13 and subsequent steps are the same as in the first embodiment.
However, in step S18 in the individual pressure adjustment step S17, the air supply to the auxiliary air cells 13 ₁ on the basis of the bundle D6 ₁ setting pressure D6b of existing information selected in step S26. Specifically, for example, the internal pressure P7 (set pressure) is a target value to increase the internal pressure of the auxiliary air cells 13 ₁ in FIG. 6, corresponding to the data _{P 1} (auxiliary air cells 13 ₁ in bundle D6 ₁ setting pressure D6b of existing information To the pressure represented by the set internal pressure D6b data). In other words, the fluid adjustment unit 19, the auxiliary air cells 13 _1, the data P ₁ in the setting pressure D6b for an existing pressure distribution D6a the selection unit 57 has selected, the pressure detected by the pressure detection unit 17, is equal as such, air is supplied to the auxiliary air cells 13 ₁ drives the supply and discharge unit 15.

However, for example, if the maximum pressure as shown by a curve L8 changes during 6 returns the internal pressure of the auxiliary air cells 13 ₁ to pressure P6 (initial internal pressure). Therefore, do not retain the internal pressure of the auxiliary air cells 13 ₁ to the data _{P 1} is set internal pressure D6b auxiliary air cells 13 _1.
In this case, the internal pressure values of the data P ₁ set pressure D6b in bundles D6 ₁ existing information P6 data modified (initial internal pressure) (bundle D6 1 of modified existing _{information),} stored in the existing information storage unit 56 May be. Bundle D6 ₁ of modified existing information as a new case was not the case the setting of the internal pressure that has been stored in the existing information storage unit 56, is stored in the existing information storage unit 56.

Step S15 to S17, performed on the auxiliary non-auxiliary air cells 13 ₁ air cells ₁₃ 2-13 _7.
In this case, the fluid adjustment unit 19 is configured such that the set internal pressure D6b of the auxiliary air cell 13 stored in the existing information storage unit 56 in advance and the internal pressure of the auxiliary air cell 13 detected by the internal pressure detection unit 17 are at least a part of the auxiliary air cell 13. The supply / discharge unit 15 is driven to supply air to the auxiliary air cell 13 so as to be equal.

Thus, in this embodiment, to select a bunch D6 ₁ existing information including the nearest existing pressure distribution D6a the pressure distribution of the user P, each based on the set internal pressure D6b bundles D6 ₁ of this existing information includes In order to adjust the internal pressure of the auxiliary air cell 13, a preferable pressure in each auxiliary air cell 13 is quickly determined.
If necessary, the assistant or the like operates the input unit 46a to correct the values such as the existing pressure distribution D6a of the bundle D6 of existing information stored in the storage units 56a and 56b.

As described above, according to the air mat device 2 of the present embodiment, the mat portion 11 can be efficiently fitted to the body of the user P.
Furthermore, since the air mat apparatus 2 includes the existing information storage unit 56 and the selection unit 57, among the plurality of sets of existing pressure distributions D6a and set internal pressures D6b stored in the existing information storage unit 56, the existing closest to the detection result Air can be supplied to the auxiliary air cell 13 based on the set internal pressure D6b corresponding to the pressure distribution D6a.

Further, by providing the storage units 56a and 56b as the existing information storage unit 56, a plurality of existing information bundles D6 can be divided and stored in the plurality of storage units 56a and 56b. The second storage unit 56b arranged on the network is relatively easy to access for other caregivers other than the helper of the air mat device 2, and the other helper can store the existing information bundle D6 in the second storage unit 56b. Makes it easier to remember.
The air mat apparatus 2 includes an input unit 46a that can modify the existing information bundle D6, so that the existing information bundle D6 is modified when the information included in the existing information bundle D6 is incorrect, and the existing information bundle D6. Can improve the reliability. And the precision of the algorithm which disperses the body pressure of the user P can be improved.

  In the present embodiment, the existing information storage unit 56 may include only the first storage unit 56a without including the second storage unit 56b, or may include only the second storage unit 56b without including the first storage unit 56a. You may prepare.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. 10 and FIG. 11, but the same parts as those of the above-mentioned embodiment are denoted by the same reference numerals and the description thereof will be omitted, and only differences will be described. explain.
As shown in FIG. 10, the air mat apparatus 3 of the present embodiment replaces the measurement information storage section 18 and the fluid adjustment section 19 of the air mat apparatus 1 of the first embodiment with the existing information storage section 56 and the selection section 57 described above. And a fluid adjusting unit 63.

  The fluid adjustment unit 63 is different from the above-described fluid adjustment unit 19 in the control program stored in the memory. That is, the process flow of the fluid adjustment unit 63 is different from that of the fluid adjustment unit 19.

Next, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 3 of this embodiment is demonstrated. FIG. 11 is a flowchart showing an operation of dispersing the body pressure of the air mat device 3 of the present embodiment.
As an outline of the operation of the air mat device 3 of the present embodiment, a bundle D6 of existing information including the existing pressure distribution closest to the pressure distribution of the user P is read from the database. And the auxiliary | assistant air cell 13 is expanded based on the setting internal pressure D6b of the bundle D6 of the existing information read.
Hereinafter, the operation of dispersing the body pressure of the air mat device 3 will be described in detail.

Up to step S11 is the same as in the first embodiment.
After step S11, an existing pressure adjustment step (step S31 shown in FIG. 11) is performed.
In the existing pressure adjustment step S31, first, the selection unit 57, based on the pressure distribution of the weight of the user P detected by the pressure distribution detection unit 16, includes a bundle of existing information including the existing pressure distribution D6a closest to the pressure distribution. the D6 ₁ selected as described above (step S32). Then, the process proceeds to step S33.

In step S33, the fluid adjustment unit 63, as the set pressure D6b of the auxiliary air cell 13 bundles D6 ₁ of the selected existing information, and the internal pressure of the auxiliary air cells 13 detected by the pressure detection unit 17 is equal, supply and discharge The unit 15 is driven to supply air to the auxiliary air cell 13. Specifically, with respect to a natural number i to 1 to 7, the internal pressure of the auxiliary air cells 13 _i detected by the pressure detection unit 17, the pressure indicated by the data _{P i} in bundles D6 ₁ setting pressure D6b of existing information To do. In other words, the fluid adjustment unit 63, the auxiliary air cells 13 _i, and the data P _i, and the inner pressure detected by the pressure detection unit 17, are equal in the setting pressure D6b for an existing pressure distribution D6a the selection unit 57 selects In this way, the supply / discharge unit 15 is driven to supply air to the auxiliary air cell 13 _i .
This completes the existing pressure adjusting step S31 and all the steps of the operation of dispersing the body pressure of the air mat device 3.

As described above, according to the air mat device 3 of the present embodiment, the mat portion 11 can be efficiently fitted to the body of the user P.
Furthermore, the existing information storage unit 56 of the bundle D6 plurality of existing information stored in, based on the flux D6 ₁ setting pressure D6b of existing information including existing pressure distribution D6a close to the pressure distribution of the user P, Air can be supplied into each auxiliary air cell 13. Thereby, the preferable pressure in each auxiliary air cell 13 can be determined quickly.

Moreover, the air mat apparatus 3 does not need to supply air based on the parameter | index, if the pressure distribution detection part 16 detects the pressure distribution of the user P once in the initial body pressure measurement process S11.
The air mat apparatus 3 detects the pressure distribution of the user P by the pressure distribution detection unit 16 only once, and among the plurality of sets of existing pressure distributions D6a and set internal pressures D6b stored in the existing information storage unit 56, the air mat device 3 Air can be supplied to the auxiliary air cell 13 based on the set internal pressure D6b corresponding to the existing pressure distribution D6a closest to the detection result of the distribution detector 16.
Since the preset internal pressure D6b stored in advance is selected from the detection result, the mat portion 11 can be fitted to the body of the user P.
If the pressure distribution is detected once, the fluid adjusting unit 19 does not need to be operated after supplying air based on the index.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. 12 and 13. However, the same parts as those of the above-described embodiment are denoted by the same reference numerals and the description thereof will be omitted, and only differences will be described. explain.
As shown in FIG. 12, the air mat device 4 of the present embodiment includes the above-described measurement information storage unit 18 in addition to the components of the air mat device 3 of the third embodiment.

Next, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 4 of this embodiment is demonstrated. FIG. 13 is a flowchart showing the operation of dispersing the body pressure of the air mat device 4 of the present embodiment.
The outline of the operation of the air mat device 4 of the present embodiment will be described. First, the bundle D6 of existing information including the existing pressure distribution closest to the pressure distribution of the user P is read from the database, and the auxiliary air cell 13 is appropriately expanded. When the maximum pressure rises after the auxiliary air cell 13 is expanded, one auxiliary air cell 13 is expanded. When the maximum pressure when expanded is lower than the initial maximum pressure, the internal pressure of the auxiliary air cell 13 is held, and the internal pressure of the auxiliary air cell 13 is stored in the database. In other cases, the internal pressure of the auxiliary air cell 13 is returned to the pressure before expansion.
Hereinafter, the operation of dispersing the body pressure of the air mat device 4 will be described in detail.

Up to step S13 is the same as in the first embodiment.
After the step S13, the existing pressure adjusting step S31 described above is performed. When the existing pressure adjustment process S31 is completed, the process proceeds to step S36.

In step S36, the fluid distribution unit 63 detects the pressure distribution detection unit 16 after performing the existing pressure adjustment step S31 compared to the initial maximum pressure stored in the measurement information storage unit 18 before performing the existing pressure adjustment step S31. Determine whether the maximum pressure has increased. In step S36, the pressure distribution of the user P may be detected.
If YES is determined in the step S36, the process proceeds to a step S37. On the other hand, when it is determined NO in step S36, all the steps of the operation of dispersing the body pressure of the air mat device 4 are finished.
In step S37, the same process as step S13 described above is performed, the initial maximum pressure and the initial internal pressure are stored in the measurement information storage unit 18, and the process proceeds to step S38.

At step S38, the fluid regulation unit 63 drives the supply and discharge unit 15 to supply to one of a plurality of auxiliary air cells 13 (for example, the auxiliary air cell 13 _1), the process proceeds to step S39.
Step S39, and in step S40 performs following step S39, performs the aforementioned steps S19, S20 and the same process with respect to the auxiliary air cells 13 _1, the process proceeds to step S42.
In step S <b> 42, the fluid adjustment unit 63 determines whether or not the maximum pressure detected by the pressure distribution detection unit 16 is lower than the initial maximum pressure stored in the measurement information storage unit 18. If YES is determined in the step S42, the process proceeds to a step S43. On the other hand, when it is determined NO in step S42, all the steps of the operation of dispersing the body pressure of the air mat device 4 are finished.

In step S43, the pressure distribution of the user P detected in step S36 is set as the existing pressure distribution, and the existing information bundle D6 including the existing pressure distribution and the corrected set internal pressure is stored in the existing information storage unit 56. The set pressure that fixes here, meaning to bundle D6 ₁ setting pressure D6b of existing information selected in step S32, what the internal pressure of the auxiliary air cells 13 _1, and a pressure P6, P9, etc. in FIG. 6 To do.
By storing the corrected existing information bundle D6 in the existing information storage unit 56, the pressure information to be adjusted represented by the existing information bundle is improved. And all the processes of the operation | movement which disperse | distributes the body pressure of the air mat apparatus 4 are complete | finished.

Incidentally, the step S37～S43, may be performed on the auxiliary air cells 13 ₁ other auxiliary air cells ₁₃ 2-13 _7.

As described above, according to the air mat device 4 of the present embodiment, the mat portion 11 can be efficiently fitted to the body of the user P.
Furthermore, when the maximum pressure detected by the pressure distribution detector 16 increases after the existing pressure adjustment step S31 is performed, one of the operation cells (auxiliary air cell 13) is supplied with air. If the maximum pressure is lower than the initial maximum pressure, the existing information bundle D6 including the corrected set internal pressure is stored in the existing information storage unit 56. If the maximum pressure is equal to or higher than the initial maximum pressure, the internal pressure of the operation cell is stored. Is returned to the pressure before the operation cell is expanded. As a result, the internal pressure of the operation cell can be corrected so that the maximum pressure is lowered, and the pressure information that is the adjustment target represented by the bundle D6 of existing information can be improved.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. 14 to 33, but the same parts as those of the above-described embodiment will be denoted by the same reference numerals, and the description thereof will be omitted. Only differences will be described. explain.
As shown in FIG. 14, the air mat device 5 of the present embodiment replaces the existing information storage unit 56, the selection unit 57, and the fluid adjustment unit 63 of the air mat device 3 of the third embodiment with a determination unit 66, an existing information storage unit. 67, a selection unit 68, and a fluid adjustment unit 69.

In this embodiment, as shown in FIG. 15, the processing unit 36 detects the pressure distribution for each of the plurality of regions A1, A2, A3, and A4 along the head and foot direction D1 while supporting the weight of the user P. To do. The plurality of regions A1, A2, A3, and A4 include four regions, a head region A1, an upper body region A2, a buttocks region A3, and a foot region A4. The head region A1, the upper body region A2, the buttocks region A3, and the foot region A4 are located in this order from the head side H to the leg side F.
The head region A1 is a region where the pressure distribution due to the head of the body of the user P is detected. Similarly, the upper body region A2 is a region where pressure distribution by the upper body other than the head of the body of the user P is detected, and the buttocks region A3 is a region where pressure distribution by the buttocks of the body of the user P is detected. The foot region A4 is a region where the pressure distribution due to the foot of the user P's body is detected.

  The plurality of regions A1, A2, A3, A4 may include at least one of the head region A1, the upper body region A2, the buttocks region A3, and the foot region A4. The number of divisions of the pressure distribution that can be detected by the processing unit 36 is not limited to four, and may be two, three, or five or more.

Further, the upper body region A2 includes an upper body first region A21 and an upper body second region A22 from the head side H toward the leg side F. The upper body first area A21 is an area closer to the head area A1 than the center part in the cranio-foot direction D1 in the upper body area A2. The upper body second area A22 is an area closer to the buttocks area A3 than the center part in the head and foot direction D1 in the upper body area A2.
The foot region A4 includes a foot first region A41 and a foot second region A42 from the head side H toward the leg side F. The foot first region A41 is a region closer to the buttocks region A3 than the center portion in the cranio-foot direction D1 in the foot region A4. The foot second region A42 is a region of the foot region A4 that is closer to the buttock region A3 than the center portion in the cranio-foot direction D1.
The length in the head and foot direction D1 of each region A1, A2, A3, A4, A21, A22, A41, A42 is set to an appropriate value according to the body shape of a plurality of users who use the air mat device 1. Yes.

For example, auxiliary air cells 13 ₁ described above, is arranged above the upper body area A2 of the sensor portion 35. Auxiliary air cells ₁₃ 2, 13 ₃ is disposed on the upper body area A2 of the sensor portion 35. The auxiliary air cells 13 ₄ and 13 ₅ are disposed in the buttock region A3 of the sensor unit 35. The auxiliary air cells 13 ₆ and 13 ₇ are arranged in the first foot region A41 of the sensor unit 35.

  In the present embodiment, the memory of the processing unit 36 stores the type and the like of the area A1 to which each pressure sensor 35a belongs. The arithmetic circuit of the processing unit 36 can calculate the total load and the like acting on the head region A1 and the like from a plurality of pressures stored in the memory.

The determination unit 66 is configured similarly to the processing unit 36. The determination unit 66 is based on the detection result of the pressure distribution detection unit 16, such as the state of the body of the user P, specifically, the circular back of the user P, the contracture of the lower limbs, the orientation of the upper body and the lower body, and the like. Determine at least one of bending and twisting from the horizontal position of the body. The determination unit 66 further determines the difference between the supine position and the lateral position, the open / closed state of the legs and arms in the supine position, the body orientation and posture collapse when the back is raised.
The memory of the determination unit 66 includes a fourth ratio representing a ratio of the user P to the body weight, a fifth ratio representing a ratio of the total load acting on the left and right of the upper body area A2 and the buttocks area A3, and a sixth ratio. Stored in advance. The first to third ratios are stored in the main control unit 42 as will be described later.
The fourth to sixth ratios can be set as a value such as “10%” or a range such as “20% or more and 30% or less”.

As shown in FIG. 14, the existing information storage unit 67 includes a first storage unit 67a and a second storage unit 67b configured in the same manner as the first storage unit 56a and the second storage unit 56b.
As shown in FIG. 16, a plurality of existing information bundles D10 are stored in the storage units 67a and 67b in advance. Each bundle D10 of existing information includes the body state D10a of the user P and the set internal pressure D6b described above.
In the body state D10a, for example, the data C1 is information indicating whether or not the user P has a back of the circle as YES (has a back of a circle (is back of a circle)) or NO (has no back of a circle). Data C2 is information indicating whether or not the lower limb contracture of the user P is YES (has lower limb contracture (is lower limb contracture)) or NO (no lower limb contracture). Data C3 and C4 (not shown) are information that separately represents the orientation of the upper and lower body of the user P by rightward, supine and leftward.
In this specification, the body state D10a is represented as (C1, C2,...) For convenience. In the existing information bundle D10, the body state D10a and the set internal pressure D6b are combined and associated with each other.
(C1, C2, ‥) 1 from (C1, C2, ‥) physical condition D10a to _{m 1} is stored in the first storage unit 67a. (C1, C2, ‥) 1 from (C1, C2, ‥) physical condition D10a to _{m 2} is stored in the second storage unit 67b.

The selection unit 68 and the fluid adjustment unit 69 are different in the control program stored in the memory from the selection unit 57 and the fluid adjustment unit 63 described above.
That is, the selection unit 68 selects the body state D10a closest to the body state determined by the determination unit 66 from the plurality of body states D10a stored in the existing information storage unit 67.
For example, in this example, there are four items as the body state D10a: back of the back, lower limb contracture, upper body orientation, and lower body orientation. The physical state D10a having a larger number of matching items may be closer to the physical state determined by the determination unit 66.

Here, for the sake of convenience (YES, YES, supine, rightward), it is expressed that the user P has a round back, contracture of the lower limbs, the upper body is facing upward, and the lower body is facing right. To do. With respect to this physical state determined by the determination unit 66, one physical state D10a (hereinafter referred to as a first physical state D10a) stored in the existing information storage unit 67 (YES, YES, supine, It is assumed that the other body state D10a (hereinafter referred to as the second body state D10a) is (NO, NO, supine, supine).
In the first body state D10a, the number of items that match the body state determined by the determination unit 66 is 3, and the second body state D10a is the body state determined by the determination unit 66. The number of matching items is 1. In this case, the selection unit 68 determines that the first body state D10a is closer to the body state determined by the determination unit 66 than the second body state D10a, and determines the first body state D10a. A bundle D10 of existing information to be included is selected.
Note that the method by which the determination unit 66 determines that the body condition is close is not limited to this.

The fluid adjustment unit 69 is different in processing flow from the fluid adjustment unit 63.
The memory of the main control unit 42 stores in advance a first ratio, a second ratio, and a third ratio that indicate the ratio of the user P to the weight. Each ratio can be set in the same manner as the above-described fourth to sixth ratios.

Next, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 5 of this embodiment is demonstrated. FIGS. 17 to 21 are flowcharts showing the operation of dispersing the body pressure of the air mat device 5 of the present embodiment.
As an outline of the operation of the air mat device 5 of the present embodiment, a bundle D10 of existing information including the body state D10a closest to the body state of the user P is read from the database. Then, the auxiliary air cell 13 is inflated based on the set internal pressure D6b of the bundle D10 of existing information that has been read.
Hereinafter, the operation of dispersing the body pressure of the air mat device 5 will be described in detail.
The steps up to the initial body pressure measurement step S11 in the first embodiment are the same as those in the first embodiment.

Next, the arithmetic circuit of the processing unit 36 adds, for example, a value obtained by multiplying the pressure detected by each pressure sensor 35a belonging to the head region A1 by the area occupied by the pressure sensor 35a. Calculate the total load due to pressure distribution (load due to partial pressure distribution). Similarly, the total load due to the pressure distribution in each region A21, A22, A3, A41, A42 is calculated. The total load due to the pressure distribution in the upper body region A2 is calculated by adding the total load due to the pressure distribution in the upper body second region A22 to the total load due to the pressure distribution in the upper body first region A21. Similarly, the total load due to the pressure distribution in the foot region A4 is calculated by adding the total load due to the pressure distribution in the foot second region A42 to the total load due to the pressure distribution in the foot first region A41.
The weight of the user P is calculated by summing up all the loads due to the pressure distribution in each of the areas A1, A2, A3, and A4.

Note that the arithmetic circuit calculates the pressure center position P2 of the pressure distribution in the upper body region A2, as shown in FIG. The pressure center position P2 is, for example, a center line with respect to the width in the left-right direction D2 of the range in which the pressure is distributed (the area where the weight of the user P is acting on the pressure distribution detection unit 16 from the first part).
At this time, the pressure distribution in the upper body region A2 is separated from the main region R21, which is a region in which the pressure distribution is continuous over the widest range in the upper body region A2, and the main region R21. It may be divided into a separation region R22 which is a region. The pressure center position may be the center of gravity of the position of the pressure sensor 35a that detects the pressure in the main region R21 of the upper body region A2.
Similarly, the arithmetic circuit calculates the pressure center position P3 of the pressure distribution in the buttocks region A3.

The arithmetic circuit calculates the total load due to the pressure distribution in the upper right region A23 of the right R with respect to the pressure center position P2 in the upper body region A2, and the total load due to the pressure distribution in the upper left region A24 of the left L relative to the pressure center position P2 in the upper body region A2. And are respectively calculated.
The arithmetic circuit calculates the total load due to the pressure distribution in the right buttock right region A33 with respect to the pressure center position P3 in the buttock region A3 and the total load due to the pressure distribution in the left buttock left region A34 with respect to the pressure center position P3 in the upper body region A2. And are respectively calculated.
The calculated total load due to the pressure distribution for each region A23, A24, A33, A34 is stored in the memory of the processing unit 36.

The processing unit 36 transmits the calculated load acting on each region, the weight of the user P, and the like to the main control unit 42 and the determination unit 66. Each load and weight is stored in the memory of the main control unit 42 and the determination unit 66. That is, the fluid adjusting unit 69 supplies air while using the load acting on each region and the pressure center positions P2 and P3 as indexes.
This completes the calculation that is the basis for determining the state of the user P's body.
Next, an initial step of adjusting the initial position of the user P (step S45 in FIG. 17) is performed before determining the physical state.
In addition, in the process of step S46 in initial process S45 demonstrated below, in order to think that the position of the head and foot direction D1 where the user P sleeps with respect to the sensor part 35 is uniquely decided centering on the buttocks of the user P. It is a process to be performed. In addition, the process of step S47 in the initial process S45 is a process for correctly laying the user P on the sensor unit 35.

In the initial step S45, the main control unit 42 distributes the load of the first ratio of the weight of the user P to the buttocks area A3 based on the transmitted load and the weight of the user P acting on the buttocks area A3. ) Is determined (step S46). The fact that the load of the first proportion of the weight of the user P is distributed in the buttocks area A3 is that the user P is sleeping with the buttocks correctly placed on the buttocks area A3 and the user is in the buttocks area A3. It means that the weight of P is concentrated to some extent.
If YES is determined in the step S46, the process proceeds to a step S47. On the other hand, if NO is determined in step S46, the process proceeds to step S48.

In step S47, the main control unit 42 distributes the load of the second proportion of the weight of the user P in the upper body region A2, and distributes the load of the third proportion of the weight of the user P in the foot region A4. Determine whether or not. The fact that the load of the second ratio of the weight of the user P is distributed in the upper body area A2 means that the user P is sleeping with the upper body correctly placed on the upper body area A2. The fact that the load of the third proportion of the weight of the user P is distributed in the foot region A4 means that the user P is sleeping with the foot correctly placed on the foot region A4. .
When YES is determined in the step S47, the initial process S45 is finished and the process proceeds to step S50. On the other hand, if NO is determined in step S47, the process proceeds to step S48.

In step S48, the main control unit 42 displays on the output unit 46b of the input / output unit 46 a display prompting the user P to lie down on the sensor unit 35, lowering the bed apparatus 101, and the like. The display prompts you to correct the angle. Then, the process proceeds to step S46. An assistant operates the bed apparatus 101 and lowers his back. In addition, the user P sleeps with help from an assistant as necessary.
Steps S46, S47, and S48 are repeated until YES is determined in step S46 and further YES is determined in step S47.

In step S50, a body state determination step is performed.
First, the circle spine determination process of step S51 is performed. As shown in FIG. 18, first, the determination unit 66 uses the upper body second pressure distribution that is the pressure distribution of the upper body second region A22 rather than the total load of the upper body first pressure distribution that is the pressure distribution of the upper body first region A21. It is determined whether or not the total load is larger (step S52). In other words, the total load based on the upper body first pressure distribution is compared with the total load based on the upper body second pressure distribution, and it is determined whether or not the load acting on the upper body region A2 is biased toward the buttocks region A3 (leg side F). To do. If the user P is circular, the upper body of the user P bends to the leg side F, and thus the determination is made.
If YES is determined in the step S52, the process proceeds to a step S53. On the other hand, if NO is determined in step S52, the process proceeds to step S54.
In step S <b> 53, the determination unit 66 determines that the body of the user P is bent and the state of the body of the user P is round. And all the processes of step S51 are complete | finished and it transfers to step S61. In step S54, the determination unit 66 determines that the user P is not a circular back. And all the processes of step S51 are complete | finished and it transfers to step S61.

In step S61, a leg contracture determination step is performed. As shown in FIG. 19, first, the determination unit 66 determines that the foot first pressure distribution, which is the pressure distribution in the foot first region A41, is greater than 0 Pa (pascal) at any position, and the foot second region. It is determined whether the foot second pressure distribution, which is the pressure distribution of A42, is equal to 0 Pa at any position (step S62). In other words, the foot first pressure distribution and the foot second pressure distribution are compared with the reference pressure of 0 Pa.
The foot first pressure distribution being greater than 0 Pa at any position means that any of the plurality of pressure sensors 35a corresponding to the foot first region A41 detects a pressure greater than 0 Pa. That the foot second pressure distribution is equal to 0 Pa at any position means that any of the plurality of pressure sensors 35a corresponding to the foot second region A42 detects a pressure of 0 Pa.

If the user P has a lower limb contracture, the leg of the user P is difficult to extend to the leg side F, and thus the determination is made.
If YES is determined in the step S62, the process proceeds to a step S63. On the other hand, when it is judged as NO at Step S62, it shifts to Step S64.
In step S63, the determination unit 66 determines that the body state of the user P is lower limb contracture. And all the processes of step S61 are complete | finished and it transfers to step S71.

In step S64, the determination unit 66 determines whether or not the load of the fourth ratio of the weight of the user P is distributed in the foot region A4. The fact that the load of the fourth proportion of the weight of the user P is distributed in the foot region A4 means that the foot of the user P extends to the leg side F, but compared to the weight of the user P as a whole. This means that the weight of the foot is lighter. When the user P has a lower limb contracture, the weight of the foot is lighter than the weight of the entire user P, and thus the determination is made.
If YES is determined in the step S64, the process proceeds to a step S63. On the other hand, when it is judged as NO at Step S64, it shifts to Step S65.
In step S65, the determination unit 66 determines that the user P does not have lower limb contracture. And all the processes of step S61 are complete | finished and it transfers to step S71.

In step S71, an upper body orientation determination step is performed. As shown in FIG. 20, first, the determination unit 66 compares the total load due to the first pressure distribution, which is the pressure distribution in the upper body right region A23, with the total load due to the second pressure distribution, which is the pressure distribution in the upper body left region A24. (Step S72). More specifically, the determination is made based on the ratio of the total load by the first pressure distribution to the sum of the total load by the first pressure distribution and the total load by the second pressure distribution (hereinafter referred to as the sum of the upper body full loads). .
When it is determined in step S72 that the total load due to the first pressure distribution with respect to the sum of the upper body full loads is smaller than the fifth ratio, the process proceeds to step S73. If it is determined in step S72 that the total load due to the first pressure distribution with respect to the sum of the upper body full loads is greater than the fifth ratio, the process proceeds to step S74. If it is determined in step S72 that the total load due to the first pressure distribution with respect to the sum of the upper body full loads falls within the fifth ratio, the process proceeds to step S75.

  In step S73, the determination unit 66 determines that the upper half of the user P is facing right. And all the processes of step S71 are complete | finished and it transfers to step S81. In step S74, the determination unit 66 determines that the upper half of the user P is facing left. And all the processes of step S71 are complete | finished and it transfers to step S81. In step S75, the determination unit 66 determines that the upper body of the user P is on his back. And all the processes of step S71 are complete | finished and it transfers to step S81.

In step S81, a lower body orientation determination step is performed. As shown in FIG. 21, first, the determination unit 66 compares the total load based on the first pressure distribution, which is the pressure distribution in the buttock right side region A33, with the total load based on the second pressure distribution, which is the pressure distribution in the buttock left side region A34. (Step S82). More specifically, the determination is made based on the ratio of the total load by the first pressure distribution to the sum of the total load by the first pressure distribution and the total load by the second pressure distribution (hereinafter referred to as the sum of the upper body full loads). .
When it is determined in step S82 that the total load due to the first pressure distribution with respect to the sum of the buttock total loads is smaller than the sixth ratio, the process proceeds to step S83. If it is determined in step S82 that the total load due to the first pressure distribution with respect to the sum of the total buttock loads is greater than the sixth ratio, the process proceeds to step S84. Then, when it is determined in step S82 that the total load due to the first pressure distribution with respect to the sum of the buttock total loads falls within the sixth ratio, the process proceeds to step S85.

  In step S83, the determination unit 66 determines that the lower half of the user P is facing right. And all the processes of step S81 and body state determination process S50 are complete | finished, and it transfers to step S91. In step S84, the determination unit 66 determines that the lower half of the user P is facing left. And all the processes of step S81 and body state determination process S50 are complete | finished, and it transfers to step S91. In step S85, the determination unit 66 determines that the lower half of the user P is supine. And all the processes of step S81 and body state determination process S50 are complete | finished, and it transfers to step S91.

As described above, in the body state determination step S50, the pressure distribution according to the weight of the user P is detected, and the body state of the user P is determined based on the pressure distribution.
For example, it is determined in the upper body orientation determination step S71 that the upper body of the user P is rightward, and in the lower body orientation determination step S81, the lower body of the user P is determined to face up or to the left, thereby determining the twist of the user's body. be able to. In the upper body orientation determination step S71, the upper body of the user P is determined to be leftward, in the lower body orientation determination step S81, the lower body of the user P is determined to face up or to the right, and in the upper body orientation determination step S71 Similarly, when the lower half of the user P is determined to be rightward or leftward in the lower body orientation determination step S81, it is possible to determine the twist of the user's body.
The pressure distribution applied by the user P changes according to the bending and twisting of the user P from the horizontal position. By analyzing the bias and distribution of the pressure distribution, it is possible to know the state where the body of the user P is bent or twisted from the horizontal position.

  The determination unit 66 transmits to the fluid adjustment unit 69 the state of the body indicating the circular back determined regarding the user P, whether the leg is contracted, the orientation of the upper body, and the orientation of the lower body.

In the existing pressure adjustment process of step S91 shown in FIG. 17, first, the selection unit 68, based on the body state determined by the determination unit 66, includes a bundle of existing information including the body state D10a closest to this body state. D10 ₁ (see FIG. 16) is selected as described above (step S92). Then, control goes to a step S93.
In step S93, the fluid adjustment unit 69, as the internal pressure of the auxiliary air cells 13 that configure the internal pressure D6b and pressure detection unit 17 of the bundle D10 ₁ auxiliary air cells 13 of the selected existing information is detected is equal, supply and discharge The unit 15 is driven to supply air to the auxiliary air cell 13. Specifically, with respect to a natural number i to 1 to 7, the internal pressure of the auxiliary air cells 13 _i detected by the pressure detection unit 17, the pressure indicated by the data _{P i} in bundles D10 ₁ setting pressure D6b of existing information To do. In other words, the fluid adjustment unit 69 supplies and discharges the auxiliary air cell 13 so that the set internal pressure D6b corresponding to the body state selected by the selection unit 68 is equal to the internal pressure detected by the internal pressure detection unit 17. 15 is driven to supply air to the auxiliary air cell 13.
Above, all the processes of the existing pressure adjustment process S91 and the operation | movement which distributes the body pressure of the air mat apparatus 5 are complete | finished.

(Example)
Hereinafter, examples of the present invention will be specifically described and described in detail. However, the present invention is not limited to the following examples.
Experiments were performed using the air mat device 5 and the body condition determination method of the present embodiment. In this embodiment, 144 pressure sensors 35a (see FIG. 23) are arranged in a grid pattern as the sensor unit 35 in the head-foot direction D1 and in the left-right direction D2 (see FIG. 23).
The ratio of the length of the head region A1, the upper body region A2, the buttocks region A3, and the foot region A4 in the head and foot direction D1 was 1: 2: 2: 4. The ratio of the length of the upper body first area A21 and the upper body second area A22 in the cranio-foot direction D1 was set to 1: 1. The ratio of the length of the foot first region A41 and the foot second region A42 in the head-foot direction D1 was set to 1: 1.
For this reason, in head-and-foot direction D1, no. The 1 to 16 pressure sensors 35a are the head region A1. Similarly, no. 17 to 48 pressure sensors 35a become the upper body region A2, 49 to 80 pressure sensors 35a become the buttock region A3. The pressure sensors 35a of 81 to 144 are the foot region A4.
In the left-right direction D2, no. 1 to 24 pressure sensors 35a are on the left side L. The pressure sensors 35a of 25 to 48 are on the right side R.

As the first ratio, a range of 35% to 55% was used. A range of 30% or more and 50% or less was used as the second ratio. As the third ratio, a range of 3% to 20% was used. As the fourth ratio, a range of 0% or more and 10% or less was used. And the range of 45% or more and 55% or less was used as a 5th ratio and a 6th ratio.
The first to sixth ratios are not limited to these ranges, and can be set to an appropriate range.

(1. Evaluation of the back of the back, contracture of the lower limbs, orientation of the upper and lower body)
[Sample 1]
The user's P back, lower limb contracture, and upper and lower body orientations were evaluated. As shown in FIG. 22, the user P was laid down (lie down) in the supine position on the sensor unit 35 of the air mat device 5. In FIG. 22 and FIGS. 25, 27, 29, and 31, which will be described later, the air mat device 5 mainly shows only a related configuration. This user P is slightly rounded and has a lower limb contracture. The user P was sleeping with the upper body on his back and the lower body facing right.
The pressure distribution detected by the pressure distribution detector 16 is shown in FIG. In FIG. 23, a portion where a pressure of about 0 Pa is detected is shown in white, and as the detected pressure increases, it is shown in dark gray. The same applies to FIG. 24, FIG. 26, FIG. 28, FIG. 30, and FIG.
The pressure distribution due to the weight of the user P changes according to the bending and twisting of the user P from the horizontal position.

From the detected pressure distribution of the user P, the pressure distribution detection unit 16 calculates as follows. In addition, the ratio with respect to the weight of the user P is shown in parentheses.
-User P's weight: 43.6kg
-Load acting on the head region A1: 3.5 kg (8%)
-Load acting on upper body region A2: 18.3 kg (42%)
Load acting on upper body first region A21: 6.0 kg (14%)
Load acting on upper body second region A22: 12.3 kg (28%)
Total load due to pressure distribution in upper right region A23: 9.1 kg (21%)
Total load due to pressure distribution in upper body left region A24: 9.2 kg (21%)
-Load acting on the buttocks area A3: 18.7 kg (43%)
Total load due to pressure distribution in buttocks right side area A33: 6.3 kg (14%)
Total load due to pressure distribution in buttocks left side area A34: 12.4 kg (29%)
-Load acting on the foot region A4: 3.0 kg (7%)

Since the total load due to the upper body second pressure distribution is greater than the total load due to the upper body first pressure distribution, it is determined YES in step S52 of the operation of the air mat device 5 described above, and the user P has a circular back. Judged.
From FIG. 23, since the foot first pressure distribution and the foot second pressure distribution are each greater than 0 Pa at any position, NO is determined in step S62. Since a load of 7% of the body weight (the fourth ratio is 0% or more and 10% or less) is distributed in the foot region A4, it is determined YES in Step S64, and the user P is in the lower limb contracture. Judged.
Since the total load according to the first pressure distribution with respect to the sum of the upper body full loads is 50% (the fifth ratio is 45% or more and 55% or less), the first pressure distribution with respect to the sum of the upper body full loads in step S72 It was determined that the total load falls within the fifth ratio, and the upper body of the user P was determined to be on his back.
Since the total load based on the first pressure distribution with respect to the sum of the total buttock load is 34% (the sixth ratio is 45% or more and 55% or less), in step S82, the total pressure based on the first pressure distribution The total load was determined to be smaller than the sixth ratio, and the lower half of the user P was determined to face right.

It can be seen that the determination result of the user P by these determination units 66 can appropriately determine the state of the circular back, lower limb contracture, upper body and lower body orientation of the user P sleeping on the sensor unit 35. It was.
When it is determined that the upper body of the user P is lying on the back and the lower body is facing left, it can be seen that the axis of the body of the user P is twisted. In this case, for example, as the lower body of the user P is on his back, fluid conditioning unit 69 may be inflated auxiliary air cells 13 ₅ and the auxiliary air cells 13 _7. By doing in this way, the twist of the axis | shaft of the user's P body can be eliminated and the posture of the user P can be corrected.

[Sample 2]
The state where the user P is sleeping is not shown, but the user P does not have the back of the back and the lower limbs contracture, the upper body is lying on his back and the lower body is lying on his back. The pressure distribution detected by the pressure distribution detector 16 is shown in FIG.
From the detected pressure distribution of the user P, the pressure distribution detection unit 16 calculates as follows.
-User P's weight: 59kg
-Load acting on the head region A1: 3.3 kg (6%)
-Load acting on upper body region A2: 23.8 kg (40%)
Load acting on upper body first region A21: 12.4 kg (21%)
Load acting on upper body second region A22: 11.4kg (19%)
Total load due to pressure distribution in upper right region A23: 12.2 kg (21%)
Total load due to pressure distribution in upper body left region A24: 11.6kg (20%)
-Load acting on the buttocks area A3: 25.2kg (43%)
Total load due to pressure distribution in buttocks right side area A33: 12.9 kg (22%)
Total load due to pressure distribution in buttocks left side area A34: 12.3 kg (21%)
-Load acting on the foot region A4: 6.8 kg (12%)

Since the total load due to the upper body second pressure distribution is not greater than the total load due to the upper body first pressure distribution, it is determined NO in step S52 of the operation of the air mat device 5 described above, and the user P is not a circular back. Judged.
From FIG. 24, the first foot pressure distribution and the second foot pressure distribution are each greater than 0 Pa at any position, and therefore NO is determined in step S62. Since a load of 12% of the body weight (the fourth ratio is 0% or more and 10% or less) is distributed in the foot region A4, it is determined as NO in step S64, and the user P is determined not to have a lower limb contracture. did.
Since the total load according to the first pressure distribution is 51% (the fifth ratio is 45% or more and 55% or less) with respect to the sum of the upper body full loads, the first pressure distribution with respect to the sum of the upper body full loads is determined in step S72. It was determined that the total load falls within the fifth ratio, and the upper body of the user P was determined to be on his back.
Since the total load due to the first pressure distribution is 51% (the sixth ratio is 45% or more and 55% or less) with respect to the sum of the buttock total loads, the first pressure distribution according to the sum of the buttock total loads in step S82. It was determined that the total load was in the sixth ratio, and the lower half of the user P was determined to be on his back.

  It can be seen that the determination result of the user P by these determination units 66 can appropriately determine the state of the circular back, lower limb contracture, upper body and lower body orientation of the user P sleeping on the sensor unit 35. It was.

(2. Corresponding example after determining the back of a circle)
As shown in FIG. 25, the user P who is a back of the circle on the sensor unit 35 of the air mat device 5 was laid in a supine position. Each main air cell 12 and each auxiliary air cell 13 are in the initial state described above.
FIG. 26 shows the pressure distribution detected by the pressure distribution detection unit 16 at this time. In the figure 28 Figure 26 and described below, showed the position of the auxiliary air cells 13 _1. The maximum pressure detected by the pressure distribution detector 16 was 45.7 mmHg (1 mmHg was 133.3 Pa (Pascal)).

As shown in FIG. 27, inflated auxiliary air cells 13 _1, contacting the auxiliary air cells 13 ₁ to the neck of the user P. FIG. 28 shows the pressure distribution detected by the pressure distribution detector 16 at this time. It was found that the maximum value of the pressure detected by the pressure distribution detection unit 16 was lowered to 40.1 mmHg, and the body pressure of the user P was dispersed.

(3. Corresponding example after determining lower limb contracture)
As shown in FIG. 29, on the sensor part 35 of the air mat apparatus 5, the user P who is the contracture of the lower limbs was put to sleep in the supine position. Each main air cell 12 and each auxiliary air cell 13 are in the initial state described above.
FIG. 30 shows the pressure distribution detected by the pressure distribution detection unit 16 at this time. In the figure 32 Figure 30 and described below, showed the position of the auxiliary air cells 13 _6. The maximum pressure detected by the pressure distribution detector 16 was 54 mmHg.

As shown in FIG. 31, inflating the auxiliary air cells 13 _6, contacting the auxiliary air cells 13 ₆ the knee portion of the user P. FIG. 32 shows the pressure distribution detected by the pressure distribution detection unit 16 at this time. It was found that the maximum pressure detected by the pressure distribution detector 16 was reduced to 41.1 mmHg, and the body pressure of the user P was dispersed.
Furthermore, the twist of the axis | shaft of the user's P body is improved, the muscle tone produced by the twist can be relieved, and the progress of contracture can be suppressed.

As described above, according to the air mat device 5 of the present embodiment, the mat portion 11 can be efficiently fitted to the body of the user P.
Further, among the plurality of sets of body states and set internal pressures stored in the existing information storage unit 67, the auxiliary air cell 13 is based on the set internal pressure corresponding to the body state closest to the detection result of the pressure distribution detection unit 16. Can be supplied with air.

In the present embodiment, the auxiliary air cell 13 has a crescent shape, but the shape of the auxiliary air cell 13 is not particularly limited. For example, the auxiliary air cell 71 may be semicircular as shown in FIG. Although not shown, the auxiliary air cell may have a rectangular shape, an L shape (a boomerang shape), or the like other than this shape. As shown in FIG. 33B, the auxiliary air cell 72 may have a triangular prism shape or the like. Although not shown, the auxiliary air cell may have a cylindrical shape, a semi-cylindrical shape, or the like other than this shape.
As shown in FIG. 33C, the auxiliary air cell 73 may be C-shaped. Although not shown, the auxiliary air cell may have a round shape, an O shape, a concave shape, or the like other than this shape. As shown in FIG. 33D, the auxiliary air cell 74 may be V-shaped (semi-cylindrical). Although not shown, the auxiliary air cell may have a mountain shape other than this shape.
Also in each of the embodiments described above, the shape of the auxiliary air cell 13 is not particularly limited.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with reference to FIGS. 34 and 35. The same reference numerals are given to the same portions as those of the above-described embodiment, and the description thereof will be omitted, and only differences will be described. explain.
As shown in FIG. 34, the air mat device 6 of this embodiment includes the above-described measurement information storage unit 18 in addition to the components of the air mat device 5 of the fifth embodiment.

Next, the operation | movement which disperse | distributes the body pressure of the air mat apparatus 6 of this embodiment is demonstrated. FIG. 35 is a flowchart showing the operation of dispersing the body pressure of the air mat device 6 of this embodiment.
The outline of the operation of the air mat device 6 of the present embodiment will be described. First, the bundle D10 of existing information including the existing pressure distribution closest to the body state of the user P is read from the database, and the auxiliary air cell 13 is appropriately expanded. When the maximum pressure rises after the auxiliary air cell 13 is expanded, one auxiliary air cell 13 is expanded. When the maximum pressure when expanded is lower than the initial maximum pressure, the internal pressure of the auxiliary air cell 13 is held, and the internal pressure of the auxiliary air cell 13 is stored in the database. In other cases, the internal pressure of the auxiliary air cell 13 is returned to the pressure before expansion.
Hereinafter, the operation of dispersing the body pressure of the air mat device 6 will be described.

Up to the initial step S45 is the same as in the fifth embodiment.
After the initial step S45, the above-described step S13 is performed to store the initial maximum pressure and the initial internal pressure in the measurement information storage unit 18.
Further, the body state determination step S50 and the existing pressure adjustment step S91 similar to those in the fifth embodiment are performed, and the process proceeds to step S36.
Steps S36 to S43 are the same as those in the fourth embodiment, and a description thereof will be omitted.
In step S43, the existing information bundle 67 stores the existing information bundle D10.

As described above, according to the air mat device 6 of the present embodiment, the mat portion 11 can be efficiently fitted to the body of the user P.
Further, when the maximum pressure detected by the pressure distribution detector 16 increases after the existing pressure adjustment step S91 is performed, one of the operation cells is supplied with air. If the maximum pressure is lower than the initial maximum pressure, the existing information bundle D10 including the corrected set internal pressure is stored in the existing information storage unit 67. If the maximum pressure is equal to or greater than the initial maximum pressure, the internal pressure of the operation cell Is returned to the pressure before the operation cell is expanded. Thereby, while correcting the internal pressure of each auxiliary air cell 13 so that the maximum pressure is lowered, it is possible to improve the information on the pressure that is the adjustment target represented by the bundle D10 of existing information.

  The first to sixth embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and the configuration does not depart from the gist of the present invention. Changes, combinations, deletions, and the like. Furthermore, it goes without saying that the configurations shown in the embodiments can be used in appropriate combinations.

For example, in the first to sixth embodiments, the fluid adjustment unit sets the operation cell to the air cells 12 and 13 different from the target cell (the main air cell 12 _k described above) having the maximum pressure. However, the operation cell setting method is not limited to this, and the fluid adjustment unit may set the air cells 12 and 13 whose pressure applied by the user P is a predetermined value or less as the operation cell. The predetermined value here is defined as, for example, a predetermined ratio such as 5% with respect to the reference pressure obtained by dividing the weight of the user P by the area of the main surface 35b of the sensor unit 35, a predetermined value, or the like. can do.
By setting in this way, air is supplied to the air cells 12 and 13 that have been detected by the pressure distribution detection unit 16 so far that the pressure is equal to or lower than a predetermined value, and the air cells 12 and 13 are inflated, so that the user Contact P. Thereby, the body pressure of the user P can be more efficiently dispersed.
The fluid adjustment unit may be operated by supplying or discharging air to the target cell.

Although the fluid is air, the fluid is not limited to air and may be water or oil.
Although the fluid adjustment unit supplies air to the air cells 12 and 13 by driving the supply / discharge unit 15 based on the detection result of the pressure distribution detection unit 16, the air may be discharged from the air cells 12 and 13. .
Although the body support device is an air mat device, the body support device is not limited to this and may be a chair, a robot used for care, or the like. When the body support device is, for example, a robot, the body state determination device determines at least one of bending and twisting from the standing position of the user's body. The standing position as used herein means a state in which the body is stretched along the vertical direction. The same applies when the body support device is a chair or the like.

1, 2, 3, 4, 5, 6 Body support device 11 Mat portion 12 Main air cell (fluid cell)
13, 71, 72, 73, 74 Auxiliary air cell (fluid cell)
DESCRIPTION OF SYMBOLS 15 Supply / discharge part 16 Pressure distribution detection part 17 Internal pressure detection part 19,63 Fluid adjustment part 56,67 Existing information storage part 57,68 Selection part 66 Judgment part D6, D10 Bundle of existing information D6a Existing pressure distribution D6b Set internal pressure D10a Body State P user

Claims (10)

A mat portion having a plurality of fluid cells capable of containing fluid;
A supply / discharge section for supplying the fluid to each fluid cell and discharging the fluid from the fluid cell;
A pressure distribution detection unit provided in the mat unit and detecting a pressure distribution applied to the mat unit by the weight of a user;
Of the pressure distribution, the partial pressure distribution by the first part of the user's body, the load by the partial pressure distribution, and the area where the weight of the user acts on the pressure distribution detection unit from the first part A fluid adjustment unit that operates by supplying or discharging the fluid to or from the fluid cell corresponding to the second part of the user's body by driving the supply / discharge unit while using at least one as an index;
A body support device comprising: The fluid adjustment unit operates the fluid cell by driving the supply / discharge unit based on the index, and changes the pressure applied by the user to the fluid cell different from the fluid cell to be operated. The body support apparatus according to claim 1. The body support device according to claim 2, wherein the fluid adjustment unit operates the fluid cell in which the pressure is equal to or less than a predetermined value. The body support apparatus according to claim 2, wherein the fluid adjustment unit operates the fluid cell in which the pressure is not maximum, and changes the pressure in the fluid cell in which the pressure is maximum. An internal pressure detector that detects internal pressures of the plurality of fluid cells, respectively;
The fluid adjustment unit drives the supply / discharge unit so that a preset internal pressure stored in advance for the fluid cell to be operated is equal to an internal pressure detected by the internal pressure detection unit. The body support apparatus as described in any one of. An existing information storage unit that stores a plurality of combinations of a pre-existing existing pressure distribution and a set internal pressure set in association with the existing pressure distribution;
A selection unit that selects the existing pressure distribution closest to the detection result of the pressure distribution detection unit from among the plurality of existing pressure distributions;
Further comprising
In the fluid cell to be operated, the fluid adjusting unit supplies the supply pressure so that the set internal pressure corresponding to the existing pressure distribution selected by the selection unit is equal to the internal pressure detected by the internal pressure detection unit. The body support apparatus according to claim 5, wherein the discharge unit is driven. A determination unit that determines a state of the user's body based on a detection result of the pressure distribution detection unit;
An existing information storage unit storing a plurality of combinations of the physical state and the set internal pressure set in association with the physical state;
A selection unit that selects the physical state closest to the physical state determined by the determination unit from among the plurality of physical states stored in the existing information storage unit;
Further comprising
In the fluid cell to be operated, the fluid adjustment unit supplies the supply pressure so that the set internal pressure corresponding to the body state selected by the selection unit is equal to the internal pressure detected by the internal pressure detection unit. The body support apparatus according to claim 5, wherein the discharge unit is driven. The fluid adjustment unit drives the supply / discharge unit until the internal pressure of the fluid cell to be operated reaches the set internal pressure, and then the internal pressure of the fluid cell to be operated from the user in the process of driving. The body support device according to any one of claims 5 to 7, wherein the body support device is set to an internal pressure when the pressure acting on the fluid cell desired to change the applied pressure is minimized. The said fluid adjustment part drives the said supply / discharge part, and supplies or discharges the said fluid with respect to the said fluid cell corresponding to a said 1st site | part, It operates. Body support device. A mat portion having a plurality of fluid cells capable of containing fluid;
A supply / discharge section for supplying the fluid to each fluid cell and discharging the fluid from the fluid cell;
A pressure distribution detection unit provided in the mat unit and detecting a pressure distribution applied to the mat unit by the weight of a user;
A fluid adjustment unit that drives the supply / discharge unit to supply or discharge the fluid to or from the fluid cell;
An internal pressure detector for detecting internal pressures of the plurality of fluid cells, respectively;
An existing information storage unit that stores a plurality of combinations of an existing pressure distribution acquired in advance and a set internal pressure of the fluid cell set in association with the existing pressure distribution;
A selection unit that selects the existing pressure distribution closest to the detection result of the pressure distribution detection unit from among the plurality of existing pressure distributions;
With
In the fluid cell to be operated, the fluid adjusting unit supplies the supply pressure so that the set internal pressure corresponding to the existing pressure distribution selected by the selection unit is equal to the internal pressure detected by the internal pressure detection unit. Body support device that drives the drain.