BEHAVIOR PROPOSAL SYSTEM AND BEHAVIOR PROPOSAL METHOD

Abstract

To provide an action suggestion system and an action suggestion method that on the basis of a subject's brain fatigue degree, are capable of suggesting action to be taken by the subject in order to improve the subject's productivity.SOLUTION: An action suggestion system 100 comprises: an acquisition unit for acquiring biological information on a subject in a predetermined state; an estimation unit for estimating a brain fatigue degree, the degree of the subject's brain fatigue, on the basis of the biological information acquired by the acquisition unit; a decision unit that on the basis of the brain fatigue degree estimated by the estimation unit, decides recommendation action, action to be taken by the subject transferred into a state differing from the predetermined state after the acquisition unit acquiring the biological information; and a notification unit capable of notifying the subject of the recommendation action.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an action suggestion system and an action suggestion method. [Background technology]

[0002] The following Patent Document 1 discloses a jet lag reduction system that controls the sleep and wakefulness states of a subject based on an action that the subject plans to perform after a predetermined time. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-103494 A Summary of the Invention [Problem to be solved by the invention]

[0004] The jet lag reduction system of Patent Document 1 cannot suggest actions that the subject should take to increase the subject's productivity based on the subject's brain fatigue level.

[0005] In consideration of the above, an object of the present invention is to provide an action suggestion system and an action suggestion method that can suggest actions that a subject should take to increase the subject's productivity based on the subject's brain fatigue level. [Means for solving the problem]

[0006] The action suggestion system according to claim 1 comprises: Resting state with eyes closed Located One Subject's biological information , for a specified period of time of up to 90 minutes an estimation unit that estimates a brain fatigue level, which is a degree of brain fatigue of the subject, based on the biological information acquired by the acquisition unit; and an estimation unit that estimates the brain fatigue level, which is a degree of brain fatigue of the subject, based on the brain fatigue level estimated by the estimation unit after the acquisition unit acquires the biological information. Resting state with eyes closed is different from identification It is in a state Standing and / or working Transitioned to One The subject For planned activities A decision unit that decides a recommended action that is an action to be taken, and a notification unit that can notify the subject of the recommended action. a headphone for outputting sound to the subject for the predetermined period of time; Equipped with.

[0007] In the action suggestion system according to claim 1, the estimation unit estimates a brain fatigue level, which is the degree of brain fatigue of the subject, based on the biometric information of the subject acquired by the acquisition unit. Furthermore, the determination unit determines a recommended action, which is an action to be taken by the subject who has transitioned to a state different from a predetermined state after the acquisition unit acquires the biometric information, based on the brain fatigue level estimated by the estimation unit. Furthermore, the notification unit is capable of notifying the subject of the recommended action. Therefore, the action suggestion system according to claim 1 can suggest an action to be taken by the subject to increase the subject's productivity, based on the subject's brain fatigue level. Furthermore, the acquisition unit acquires biometric information of the subject in a resting state with eyes closed. The subject's brain fatigue level estimated by the estimation unit based on the biometric information acquired from the subject in a resting state with eyes closed is likely to accurately represent the subject's actual brain fatigue level. Therefore, when the subject performs the recommended behavior determined by the determination unit of the behavior suggestion system according to claim 2, the subject's productivity is likely to be higher than when biometric information is acquired from a subject who is not in a resting state with eyes closed.

[0008] The action suggestion system according to claim 2 is the action suggestion system according to claim 1, The estimation unit estimates an expected accumulated value of brain fatigue of the subject based on the biological information, and the determination unit determines the recommended action based on the expected accumulated value of brain fatigue and the subject schedule. .

[0009] In the action suggestion system according to claim 2, The preferred recommended behavior for the subject can be determined. .

[0010] The action suggestion system according to claim 3 is the system according to claim 2, further comprising a determination unit that determines whether or not the subject is in the eyes-closed resting state.

[0011] The determination unit of the action suggestion system according to claim 3 determines whether or not the subject is in a resting state with the eyes closed. Therefore, the action suggestion system according to claim 3 can recognize that the subject is in a resting state with the eyes closed.

[0012] The action suggestion system according to claim 4 is the system according to any one of claims 1 to 3, identification Transitioned to state OneThe apparatus includes a schedule acquisition unit that acquires information regarding a subject's schedule indicating the behavior that the subject plans to perform, and the determination unit determines the recommended behavior based on the brain fatigue level estimated by the estimation unit and the subject's schedule acquired by the schedule acquisition unit.

[0013] The determination unit of the action suggestion system according to claim 4 determines the recommended action based on the brain fatigue level estimated by the estimation unit and the subject's schedule acquired by the schedule acquisition unit. Therefore, the action suggestion system according to claim 4 can suggest an action that the subject should perform to increase the subject's productivity while taking into account the subject's schedule.

[0014] The behavior suggestion system of claim 5 is the system of claim 4, comprising a transmitting unit capable of wirelessly transmitting the bio-information acquired by the acquiring unit and the subject schedule acquired by the schedule acquiring unit, an estimating unit that estimates the brain fatigue level of the subject based on the bio-information received from the transmitting unit, and a determining unit that determines the recommended behavior based on the brain fatigue level and the subject schedule, and an external server capable of wirelessly transmitting the recommended behavior.

[0015] In the behavior suggestion system according to claim 5, the bio-information acquired by the acquisition unit and the subject's schedule acquired by the schedule acquisition unit are transmitted to an external server. Furthermore, an estimation unit of the external server estimates the subject's brain fatigue level based on the bio-information. Furthermore, a determination unit of the external server determines a recommended behavior based on the brain fatigue level and the subject's schedule. Therefore, by installing multiple devices having an acquisition unit and a schedule acquisition unit in various locations, information on the brain fatigue level and recommended behavior of many subjects can be collected in the external server. Therefore, the estimation unit and determination unit of the external server can determine a recommended behavior that can increase the productivity of the subject by processing this information using, for example, AI (artificial intelligence).

[0016] The action suggestion system according to claim 6 is the system according to claim 5, further comprising: a receiving unit that receives the recommended action wirelessly transmitted by the external server; and a notification unit that is capable of notifying the subject of the recommended action received by the receiving unit.

[0017] In the action suggestion system according to claim 6, the notification unit can notify the subject of the recommended action received by the receiving unit from the external server. Therefore, the subject can recognize the content of the recommended action determined by the determination unit of the external server.

[0018] The action suggestion system according to claim 7 includes any one of claims 1 to 6, The predetermined time is 30 minutes or less, The acquiring unit and the headphones. is provided on the nap seat, and the nap seat is One a seat body having a seat portion supporting the buttocks and thighs of the subject, an upper body support portion rotatably connected to one end of the seat portion and supporting the upper body of the subject, and a lower leg support portion rotatably connected to the other end of the seat portion and supporting the lower legs of the subject; and a drive mechanism which rotates the upper body support portion and the lower leg support portion relative to the seat portion to transform the seat body between a chair shape and a bed shape. and changing the sound output from the headphones when the predetermined time has elapsed. .

[0019] A subject supported in a supine position on the bed-shaped seat body of the nap seat of the action suggestion system according to claim 7 is likely to be in a resting state with eyes closed. Therefore, when the subject performs the recommended action determined by the determination unit of the action suggestion system according to claim 7, there is a high possibility that the subject's productivity will increase. In addition, by changing the sound output by the headphones after 30 minutes or less has elapsed, the headphones are more likely to wake the subject up before the subject falls into non-REM sleep, making it easier for the subject to achieve a sufficient awakening effect.

[0020] The action suggestion system according to claim 8 is in accordance with claim 7, wherein the nap sheet has a head side frame made of a non-translucent material that covers the periphery of the subject's head supported by the upper body support part.

[0021] The head side frame of the napping seat of the action suggestion system according to claim 8 can prevent light from entering from the outside to the inside of the head side frame. Therefore, the subject is likely to be in a resting state with eyes closed. Therefore, when the subject performs the recommended action determined by the determination unit of the action suggestion system according to claim 8, the subject's productivity is likely to increase.

[0022] The behavior suggestion system of claim 9 is in claim 8, wherein the napping seat has a foot side frame that covers the surroundings of the subject's feet supported by the lower leg support, and a curtain that is stretched between the head side frame and the foot side frame and is movable between a closed position that covers the upper part of the seat body and an open position that exposes the upper part of the seat body.

[0023] When the curtain of the behavior suggestion system according to claim 9 is in the closed position, the subject supported in a supine position on the seat body has an upper view blocked by the curtain. Therefore, the subject is likely to close his / her eyes and rest. Therefore, when the subject performs the recommended behavior determined by the determination unit of the behavior suggestion system according to claim 9, the subject's productivity is likely to increase.

[0024] The action suggestion system according to claim 10 is based on any one of claims 7 to 9, and further comprises a heating device for heating the seat body.

[0025] In the behavior suggestion system according to claim 10, the subject's body is warmed by a heating device. Therefore, the subject is likely to be in a resting state with eyes closed. Therefore, when the subject performs the recommended behavior determined by the determination unit of the behavior suggestion system according to claim 10, the subject's productivity is likely to increase.

[0026] The method for suggesting an action according to claim 11 comprises: Resting state with eyes closed Located One Subject's biological information , for a specified period of time of up to 90 minutes obtaining the outputting sound to the subject through headphones for the predetermined period of time;A step of estimating a brain fatigue level, which is a degree of brain fatigue of the subject, based on the acquired biological information; Resting state with eyes closed is different from identification It is in a state Standing and / or working Transitioned to One The subject For planned activities The method includes a step of determining a recommended action, which is an action to be taken, and a step of notifying the subject of the recommended action. Effect of the Invention

[0027] As described above, the action suggestion system and action suggestion method according to the present invention can suggest an action that a subject should take to increase the subject's productivity, based on the subject's brain fatigue level. [Brief description of the drawings]

[0028] [Figure 1] 1 is a perspective view showing an action suggestion system according to an embodiment with the curtain of a nap seat in a closed position. [Diagram 2] FIG. 2 is a perspective view showing the napping seat with the curtain in the open position. [Diagram 3] 1 is a schematic side view of a nap seat whose main body is shaped like a chair. FIG. [Figure 4] 1 is a schematic side view of a nap seat whose main body is shaped like a bed. FIG. [Diagram 5] 2 is a block diagram showing the hardware configuration of the nap seat. FIG. [Figure 6] FIG. 2 is a block diagram showing the functional configuration of the nap seat. [Figure 7] 2 is a block diagram showing a functional configuration of an external server shown in FIG. 1. [Figure 8] 13 is a flowchart showing the process executed by the nap seat. [Figure 9] 13 is a flowchart showing a process executed by an external server. [Figure 10] 13 is a flowchart showing the process executed by the nap seat. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The behavior suggestion system 100 and the behavior suggestion system according to the embodiment will be described below with reference to the drawings. The arrows FR, UP, and RH shown in each drawing indicate the seat front direction, seat up direction, and right side in the seat width direction of the napping seat 10, which is a component of the behavior suggestion system 100, respectively. The seat front direction is the front of the subject seated on the seat body 12 of the napping seat 10. The right side in the seat width direction is the right direction of the subject P seated on the seat body 12. In the following description, when the directions of front-rear, up-down, and left-right are simply used, they refer to front-rear in the seat front-rear direction, up-down in the seat up-down direction, and left-right in the seat width direction, unless otherwise specified.

[0030] 1, the action suggestion system 100 includes a nap seat 10 and an external server 90. Although not shown in the figure, a large number of nap seats 10 are installed in various locations.

[0031] (Configuration of the nap sheet 10) As shown in Figures 1 and 2, the nap seat 10 of this embodiment has a seat body 12, a head side frame 14, a foot side frame 16, a connecting plate 17, a curtain 18, a support base 20, and a drive mechanism 22.

[0032] The seat body 12 has a seat portion 12A, an upper body support portion 12B, and a lower leg support portion 12C. The seat body 12 can support a subject P (see Figs. 3 and 4) in a seated position or a supine position (supine position).

[0033] 3 and 4, the seat portion 12A of the seat body 12 is capable of supporting the buttocks and thighs of the subject P. The seat portion 12A is inclined in a side view so that the rear portion of the seat portion 12A is positioned lower than the front portion.

[0034] The seat 12A includes a metal seat frame 26 that constitutes the skeleton of the seat 12A, and a cushioning material (not shown) that covers the seat frame 26. Inside the seat 12A, a seat heater 68 is provided as a heating device for warming the buttocks and thighs of the subject P (see FIG. 5).

[0035] The upper body support part 12B is rotatably connected to the rear end (one end) of the seat part 12A. The upper body support part 12B is inclined in a side view so that the rear end side is located higher than the front end part connected to the seat part 12A. The upper body support part 12B can support the upper body of the subject P.

[0036] The upper body support part 12B includes a metallic upper frame 28 that constitutes the skeleton of the upper body support part 12B, and a cushioning material (not shown) that covers the upper frame 28. In addition, an upper heater 70 is provided inside the upper body support part 12B as a heating device for warming the upper body of the subject P (see FIG. 5).

[0037] The crus support part 12C is rotatably connected to the front end part (other end part) of the seat part 12A. The crus support part 12C is inclined in a side view so that the front end part is positioned lower than the rear end part connected to the seat part 12A. The crus support part 12C is capable of supporting the lower leg of the subject P.

[0038] The lower leg support part 12C includes a metallic lower frame 30 that constitutes the skeleton of the lower leg support part 12C, and a cushioning material (not shown) that covers the lower frame 30. A lower heater 71 is provided inside the lower leg support part 12C as a heating device for warming the lower leg of the subject P (see FIG. 5). The seat part 12A, the upper body support part 12B, and the lower leg support part 12C are integrally covered with a skin 19 (see FIGS. 1 to 4).

[0039] The seat body 12 can be transformed by the driving force of the driving mechanism 22 into a chair shape (FIG. 3) and a bed shape (FIG. 4).

[0040] 3, the drive mechanism 22 has an upper electric actuator 34, an upper link 36, and a lower electric actuator 40. The upper electric actuator 34 having the upper motor 32 and the upper link 36 can generate a drive force for rotating the upper body support part 12B relative to the seat part 12A. The lower electric actuator 40 having the rotating lower motor 38 can generate a drive force for rotating the lower leg support part 12C relative to the seat part 12A.

[0041] The upper electric actuator 34 has an upper motor 32, a cylinder 34A, and a rod 34B. The upper motor 32 attached to the underside of the seat 12A is, for example, a stepping motor or a servo motor. The upper motor 32 operates when power is supplied from a power source (not shown) to generate a rotational force. The rotational force of the upper motor 32 causes the rod 34B to slide relative to the cylinder 34A.

[0042] One end of a long upper link 36 is rotatably connected to the tip of the rod 34B. The other end of the upper link 36 is rotatably connected to an upper bracket 44 fixed to the upper frame 28. A long hole 36A is formed between the one end and the other end of the upper link 36, penetrating the upper link 36 in the seat width direction. A shaft 37, which is a fixing member of the seat main body 12 extending in the seat width direction, is rotatably and slidably inserted into this long hole 36A.

[0043] 3, the amount by which the rod 34B protrudes from the cylinder 34A is large, and the inclination angle of the upper link 36 with respect to the horizontal direction is larger than in the state of FIG.

[0044] On the other hand, when the upper motor 32 is driven from the state shown in Fig. 3 to reduce the amount of protrusion of the rod 34B from the cylinder 34A, the upper electric actuator 34 contracts as shown in Fig. 4. As the upper electric actuator 34 contracts, the upper link 36 rotates clockwise about the shaft 37. As a result, the upper body support part 12B is reclined further relative to the seat part 12A than in the state shown in Fig. 3.

[0045] The lower electric actuator 40 has a lower motor 38, a cylinder 40A, and a rod 40B. The lower motor 38, located in front of the upper motor 32, is attached to the underside of the seat 12A. The lower motor 38 is, for example, a stepping motor or a servo motor. The lower motor 38 operates when power is supplied from a power source (not shown) to generate a rotational force. The rotational force of the lower motor 38 causes the rod 40B to slide relative to the cylinder 40A.

[0046] A long hole 42A is formed in the lower bracket 42 attached to the lower surface of the lower frame 30. A pin 40C provided at the tip of a rod 40B is rotatably and slidably inserted into the long hole 42A. Therefore, the tip of the rod 40B is movable along the long hole 42A.

[0047] In the state shown in Fig. 3, most of the rod 40B is stored in the cylinder 40A. In this state, the front end of the lower leg support portion 12C is located further rearward than in the state shown in Fig. 4. The shape of the seat body 12 shown in Fig. 3 is the chair shape of the seat body 12.

[0048] On the other hand, when the lower motor 38 is driven from the state shown in Fig. 3 to extend the lower electric actuator 40, the pin 40C of the rod 34B moves along the long hole 42A, and the front end of the lower frame 30 is positioned further forward than in the state shown in Fig. 3. The shape of the seat body 12 shown in Fig. 4 is a bed shape in which the angle between the seat part 12A and the upper body support part 12B and the angle between the seat part 12A and the lower leg support part 12C are larger than in the state shown in Fig. 3. In this embodiment, when the seat body 12 moves to the bed shape, the seat part 12A and the upper body support part 12B do not become flat, and the seat part 12A and the lower leg support part 12C do not become flat.

[0049] By controlling the upper motor 32 and the lower motor 38, respectively, it is possible to transform the seat body 12 into any shape between the chair shape shown in FIG. 3 and the bed shape shown in FIG.

[0050] As shown in Figures 1 and 2, the head-side frame 14, made of a non-light-transmitting material, constitutes the rear end of the napping seat 10. The head-side frame 14 is formed in a generally cylindrical shape with both the front and rear sides of the seat open. The front shape of the head-side frame 14 is a generally ellipse that is long in the vertical direction. The lower end of the head-side frame 14 is fixed to the rear end of a connecting plate 17 that constitutes the bottom of the napping seat 10 and extends in the front-to-rear direction. The planar shape of the connecting plate 17 is generally rectangular with the longitudinal direction being the front-to-rear direction.

[0051] A support base 20 is fixedly provided on the inside of the lower part of the head side frame 14. A part of a drive mechanism 22 is housed in the support base 20. Furthermore, the seat body 12 is supported by the support base 20.

[0052] 2, the rear opening of the head-side frame 14 is blocked by a rear cloth material 24. The rear cloth material 24 is formed, for example, from a stretchable cloth material, and is attached to the peripheral edge of the head-side frame 14. In addition, in this embodiment, the rear cloth material 24 is formed, for example, from a cloth material that reflects a portion of light. Therefore, it is difficult to see the inside of the sleeping sheet 10 through the rear cloth material 24 from the outside of the sleeping sheet 10. On the other hand, the subject P who is inside the sleeping sheet 10 can see the outside of the sleeping sheet 10 through the rear cloth material 24.

[0053] A rear rail 14A extending along the head side frame 14 is provided on the front edge of the upper part of the head side frame 14. The rear edge of a curtain 18, which will be described later, is slidably attached to the rear rail 14A.

[0054] 3 and 4, the head-side frame 14 is inclined so that its upper portion is positioned further rearward than its lower portion in a side view. The head-side frame 14 is designed to cover part of the head of the subject P seated on the chair-shaped seat body 12. The head-side frame 14 is also designed to cover the entire head of the subject P supported on the bed-shaped seat body 12.

[0055] 1 and 2, the foot side frame 16 made of a non-translucent material constitutes the front end of the napping seat 10. The foot side frame 16 is formed in a generally cylindrical shape with both the front and rear sides of the seat open. The front shape of the foot side frame 16 is a generally ellipse that is long in the vertical direction. The lower end of the foot side frame 16 is fixed to the front end of the connecting plate 17.

[0056] The front opening of the foot-side frame 16 is closed by a front cloth material 25. The front cloth material 25 is formed, for example, from a stretchable cloth material, and is attached to the peripheral edge of the foot-side frame 16. In addition, in this embodiment, the front cloth material 25 is formed, for example, from a cloth material that reflects part of the light. Therefore, it is difficult to see the inside of the sleeping sheet 10 through the front cloth material 25 from the outside of the sleeping sheet 10. On the other hand, the subject P who is inside the sleeping sheet 10 can see the outside of the sleeping sheet 10 through the front cloth material 25.

[0057] A front rail 16A extending along the foot side frame 16 is provided on the rear edge of the upper part of the foot side frame 16. The front edge of a curtain 18, which will be described later, is slidably attached to the front rail 16A.

[0058] 3 and 4, the foot side frame 16 is inclined so that the upper part is positioned further back than the lower part in a side view. The foot side frame 16 is designed to cover the periphery of the foot of the subject P supported by the lower leg support 12C.

[0059] 1, the curtain 18 is a cloth-like member stretched between the head-side frame 14 and the foot-side frame 16. The rear edge of the curtain 18 is slidably attached to the rear rail 14A, and the front edge of the curtain 18 is slidably attached to the front rail 16A. The curtain 18 is movable along the front rail 16A and the rear rail 14A between a closed position (see FIG. 1) that covers the upper part of the seat body 12 and an open position (see FIG. 2) that opens the upper part of the seat body 12.

[0060] Furthermore, the curtain 18 is made of a material that transmits a portion of the external light. That is, the visible light transmittance of the curtain 18 is higher than that of the head-side frame 14 and the foot-side frame 16. Therefore, even when the curtain 18 is in the closed position and covers the upper part of the subject P, a portion of the external light transmits through the curtain 18 and enters the inside of the napping sheet 10. Therefore, even in this state, the area around the subject P does not become completely dark.

[0061] 3 and 4, the vertical dimension of head-side frame 14 is greater than the vertical dimension of foot-side frame 16. For this reason, the upper edge of curtain 18 in the closed position slopes diagonally downward from head-side frame 14 to foot-side frame 16 in side view.

[0062] 1, when the curtain 18 is in the closed position, it exposes the lower half of the sleeping sheet 10. Furthermore, a person positioned outside the sleeping sheet 10 can see that the subject P is inside the sleeping sheet 10 through the gap between the lower edge of the curtain 18 in the closed position and the sheet body 12.

[0063] (Hardware configuration of nap seat 10) As shown in Figures 1 and 2, the nap seat 10 is provided with an ECU (Electronic Control Unit) 50 as a control unit. Figure 5 is a block diagram showing the hardware configuration of the ECU 50. The ECU 50 includes a CPU (Central Processing Unit: processor) 52, a ROM (Read Only Memory) 54, a RAM (Random Access Memory) 56, a storage 58, a communication I / F (communication interface) 60, and an input / output I / F (input / output interface) (transmitter) (receiver) 62. The CPU 52, the ROM 54, the RAM 56, the storage 58, the communication I / F 60, and the input / output I / F 62 are connected to each other via a bus 64 so as to be able to communicate with each other.

[0064] The CPU 52 is a central processing unit that executes various programs and controls each part. That is, the CPU 52 reads a program from the ROM 54 or the storage 58, and executes the program using the RAM 56 as a working area. The CPU 52 controls each of the above components and performs various arithmetic processing according to the program recorded in the ROM 54 or the storage 58.

[0065] The ROM 54 stores various programs and various data. The RAM 56 temporarily stores programs or data as a working area. The storage 58 is configured with an HDD (Hard Disk Drive) or an SSD (Solid State Drive) and stores various programs including an operating system and various data. In this embodiment, the ROM 54 or the storage 58 stores a program for controlling the drive mechanism 22, a program for performing a nap process, various data, and the like.

[0066] The communication I / F 60 is an interface for the nap seat 10 to communicate with other devices. For example, standards such as CAN (Controller Area Network), Ethernet (registered trademark), LTE (Long Term Evolution), FDDI (Fiber Distributed Data Interface), and Wi-Fi (registered trademark) are used for the communication I / F 60. The communication I / F 60 is capable of wireless communication with an external server 90.

[0067] The input / output I / F 62 is electrically connected to the upper motor 32, the lower motor 38, the seat heater 68, the upper heater 70, the lower heater 71, the authentication device 72, the biometric information sensor (acquisition unit) 73, the sound output unit 74, and the display device (alert unit) (schedule acquisition unit) 75. The upper motor 32 and the lower motor 38 operate based on signals from the ECU 50.

[0068] The seat heater 68, the upper heater 70, and the lower heater 71 are equipped with heating wires arranged inside the seat body 12, and generate heat based on a signal from the ECU 50 to warm the seat body 12. The seat heater 68, the upper heater 70, and the lower heater 71 are configured so that they can be turned on and off independently. The output of the seat heater 68, the upper heater 70, and the lower heater 71 is variable. Therefore, for example, the leg support portion 12C can be heated by increasing the output of the lower heater 71 in the ON state while keeping the seat heater 68 and the upper heater 70 in the OFF state.

[0069] The authentication device 72 provided on the outer surface of the head-side frame 14 is a device for authenticating the subject P who uses the napping seat 10. The authentication device 72 may be, for example, a device that performs authentication by reading an ID card given to each subject P. The authentication device 72 may also be a biometric authentication device. Biometric authentication devices include, for example, a fingerprint authentication device, a vein authentication device, a face authentication device, and an iris authentication device. Information regarding the authentication result of the authentication device 72 is transmitted from the authentication device 72 to the ECU 50.

[0070] The biometric sensor 73 acquires biometric information of the subject P who has been authenticated by the authentication device 72 and who is supported by the seat body 12. The biometric information in this embodiment is a heart rate. However, the biometric sensor 73 may acquire biometric information other than a heart rate (e.g., brain waves, blood pressure, pulse). As shown in FIG. 1, the biometric sensor 73 in this embodiment is provided inside the upper body support portion 12B. The biometric information acquired by the biometric sensor 73 is transmitted from the biometric sensor 73 to the ECU 50. The biometric sensor 73 does not have to be provided in the seat body 12. For example, the biometric sensor 73 may be a type that is worn on the body of the subject P.

[0071] The sound output unit 74 of this embodiment is connected to a terminal (not shown) provided on the inner surface of the nap seat 10. A jack for headphones (not shown) can be connected to this terminal. The ECU 50 then causes the sound output unit 74 to output sound to the subject P via the headphones. In addition, a plurality of pieces of sound data are stored in the storage 58, and the sound output unit 74 outputs the plurality of pieces of sound data based on a signal from the ECU 50. The sounds stored in the storage 58 are, for example, flat music, white noise, natural sounds such as birds singing and the sound of the sea, and voice announcements giving instructions to the subject P. The white noise referred to here is noise that has the same intensity at all frequencies.

[0072] The display device 75 displays various information. The display device 75 is a touch panel monitor. Therefore, the display device 75 also functions as an operation unit that receives input from the subject P. As shown in FIG. 2, for example, the display device 75 is provided inside the nap sheet 10. The display device 75 may also be a portable type display device.

[0073] (Functional configuration of nap seat 10) The above hardware resources are used to realize various functions of the napping seat 10. The functional configuration realized by the napping seat 10 will be described with reference to FIG.

[0074] 6, the ECU 50 of the nap seat 10 is configured to include, as functional components, a start command receiving unit 76, a nap time acquisition unit 78, a seat deformation unit 80, a heater control unit 82, a sound control unit 84, a sensor control unit 85, a time management unit 86, a stop control unit 87, and a display control unit 88. Each functional component is realized by the CPU 52 reading and executing a program stored in the ROM 54 or the storage 58.

[0075] The start instruction receiving unit 76 receives an instruction to start taking a nap from the subject P. For example, when the subject P operates a button corresponding to a signal to start use on the touch panel (operation screen) of the display device 75, the start instruction receiving unit 76 receives the instruction to start taking a nap. Alternatively, the start instruction receiving unit 76 may receive the instruction to start use when a signal to start use is transmitted to the nap seat 10 via a mobile device such as a smartphone carried by the subject P. In this case, when the signal to start use is transmitted by the subject P activating a dedicated application installed on the mobile device, the ECU 50 receives the signal from the mobile device via the communication I / F 60, and the start instruction receiving unit 76 receives the instruction to start use.

[0076] The nap time acquiring unit 78 acquires data related to the nap time that is stored in advance in the storage 58 or the like. Furthermore, if data related to the nap time is stored in the external server 90, the nap time acquiring unit 78 acquires the data on the nap time from the external server 90.

[0077] In this embodiment, the nap time can be changed by the subject P's operation. For example, the currently set nap time is displayed on the touch panel of the display device 75. However, the subject P can change the nap time within a predetermined range by operating the touch panel. In this embodiment, the nap time is, for example, within 90 minutes. The nap time is preferably within 30 minutes.

[0078] When the nap time is changed by the subject P, the data of the nap time stored in the storage 58 or the external server 90 is updated. Therefore, in this case, the nap time acquiring unit 78 acquires the latest nap time stored in the storage 58 or the external server 90.

[0079] The seat transformation unit 80 transforms the seat body 12 between a chair shape and a bed shape. Specifically, the seat transformation unit 80 transforms the seat body 12 by controlling the upper motor 32 and the lower motor 38. As an example, the seat transformation unit 80 in this embodiment transforms the seat body 12 from a chair shape to a bed shape when the use of the nap seat 10 begins, and changes the seat body 12 from the bed shape to the chair shape when the nap time ends.

[0080] The heater control unit 82 controls the seat heater 68, the upper heater 70, and the lower heater 71 so that the seat 12A, the upper body support unit 12B, and the lower leg support unit 12C are at temperatures that the subject P feels comfortable with. Temperature sensors may be attached to the seat 12A, the upper body support unit 12B, and the lower leg support unit 12C, and the heater control unit 82 may control the seat heater 68, the upper heater 70, and the lower heater 71 based on information from the temperature sensors.

[0081] The sound control unit 84 controls the output of sound by the sound output unit 74. For example, the sound control unit 84 controls the type and time of sound output by the sound output unit 74. As an example, the sound control unit 84 in this embodiment causes the sound output unit 74 to output a predetermined sound when the use of the nap seat 10 is started.

[0082] Furthermore, the sound control unit 84 causes the sound output unit 74 to output a sound with less intonation from the start of use of the nap seat 10 to the end of the nap time. As an example in this embodiment, the sound control unit 84 causes the sound output unit 74 to output white noise.

[0083] Furthermore, at the end of the nap time, the sound control unit 84 stops or changes the output of sound by the sound output unit 74. As an example in this embodiment, at the end of the nap time, the sound control unit 84 changes the output sound from the sound output unit 74 from white noise to a sound that the subject P associates with morning, such as the chirping of birds.

[0084] The sensor control unit 85 controls the biological information sensor 73 .

[0085] The display control unit 88 controls the display device 75 .

[0086] The functions of the time management unit 86 and the stop control unit 87 will be described later.

[0087] (External server 90 configuration) The external server 90 shown in FIG. 1 includes, as its hardware configuration, a CPU, a ROM, a RAM, a storage, a communication I / F, and an input / output I / F. These components are connected to each other via a bus so that they can communicate with each other. The communication I / F of the external server 90 is capable of wireless communication with the nap seat 10. The external server 90 having such a hardware configuration functions as an artificial intelligence (AI). Furthermore, in the storage of the external server 90, various information of various subjects (e.g., biological information and a subject schedule described below, etc.) received by wireless communication from the multiple nap seats 10 described above is recorded in association with ID information representing each subject and the date and time when each information was acquired.

[0088] 7, the hardware of the external server 90 has, as its functional configuration, an estimation unit 93 and a determination unit 94. The estimation unit 93 and the determination unit 94 are realized by a CPU reading and executing a program stored in a ROM or storage.

[0089] The estimation unit 93 estimates a brain fatigue level, which is the degree of brain fatigue of the subject P, based on the biological information of the subject P acquired by the biological information sensor 73.

[0090] The determination unit 94 determines a recommended behavior that the subject P should take a predetermined time after the end time, which is the time when the nap time ends, based on the degree of brain fatigue (expected accumulated value of brain fatigue) estimated by the estimation unit 93 and the subject schedule described below.

[0091] (Processing Executed by the Napping Sheet 10 and the External Server 90) The process executed by the napping sheet 10 and the external server 90 when the subject P takes a nap using the napping sheet 10 will be described with reference to the flowcharts shown in FIGS.

[0092] First, the flow of processing performed by the ECU 50 of the nap seat 10 will be described with reference to the flowchart of Fig. 8. The ECU 50 repeatedly executes the processing of the flowchart of Fig. 8 every time a predetermined time elapses.

[0093] Subject P sits on the seat body 12 in the state shown in Figure 2. When another subject, who used the napping seat 10 before subject P, finishes his or her nap, the seat deformation section 80 transforms the seat body 12 from a bed shape to a chair shape, and the other subject moves the curtain 18 to the open position. Therefore, when subject P starts using the napping seat 10, the seat body 12 is in the chair shape and the curtain 18 is in the open position.

[0094] Before the subject P sits on the chair-shaped seat body 12, the subject P performs authentication using the authentication device 72 outside the nap seat 10. That is, for example, the subject P causes the authentication device 72 to read his / her own ID card. If the authentication device 72 authenticates the ID card, the ECU 50 judges Yes in step S10 of FIG. 8. After completing the authentication process, the subject P moves inside the nap seat 10 and sits on the chair-shaped seat body 12 as shown in FIG. 3. The subject P then moves the curtain 18 to the closed position.

[0095] If the ECU 50 determines "Yes" in step S10, the ECU 50 proceeds to step S11. In step S11, the start instruction receiving unit 76 of the ECU 50 determines whether or not the subject P supported by the seat body 12 has issued an instruction to start a nap using the display device 75 (touch panel). Furthermore, in step S11, the start instruction receiving unit 76 determines whether or not the subject P has used the display device 75 (touch panel) to input a subject schedule indicating actions that the subject P, who has transitioned to a state other than the eyes-closed resting state (nap state), plans to perform.

[0096] Here, it is assumed that the subject schedule of subject P inputted via the display device 75 is Example 1 or Example 2 below. Example 1: After the end of the nap, you resume the work that was interrupted and continue working for five hours. Example 2: A person travels to another airport by airplane from the airport where the nap seat 10 is installed. The arrival time at the other airport is 7 hours after the current time.

[0097] If the ECU 50 determines "Yes" in step S11, the process proceeds to step S12. In step S12, the nap time acquisition unit 78 of the ECU 50 acquires the nap time. Specifically, the nap time acquisition unit 78 acquires the latest nap time (e.g., 30 minutes) stored in the storage 58 or the external server 90.

[0098] Next, in step S13, the seat deformation unit 80 of the ECU 50 controls the upper motor 32 and the lower motor 38 to deform the seat body 12 from the chair shape to the bed shape. As a result, the subject P is supported by the seat body 12 in a supine position, as shown in Fig. 4. Note that the seat body 12 may be provided with sensors such as a seating sensor, and the seat deformation unit 80 may deform the seat body 12 only when it is detected that the subject P is seated. Furthermore, in step S13, the heater control unit 82 controls at least one of the seat heater 68, the upper heater 70, and the lower heater 71 to be turned on.

[0099] Next, in step S14, the sound control unit 84 of the ECU 50 causes the headphones to output a predetermined sound via the sound output unit 74. At this time, the sound control unit 84 may change the type of output sound depending on the nap time. Also, if the subject P is allowed to select a sound in advance, the sound output unit 74 may output the selected sound. When the headphones output these sounds while the subject P is wearing the headphones on his / her head, the sounds (noises) around the subject P (nap seat 10) are cancelled by the sounds output from the headphones.

[0100] There is a high possibility that the subject P in the supine position supported by the bed-shaped seat body 12 intends to take a nap using the napping sheet 10. Furthermore, there is a high possibility that the subject P who intends to do so will consciously close his / her eyes and assume a resting state (predetermined state) when supported by the seat body 12.

[0101] Furthermore, the sound output from the headphones cancels the sound (noise) around the subject P (sleeping sheet 10). Furthermore, because the curtain 18 is in the closed position, the surroundings of the subject P (inside the sleeping sheet 10) become darker than when the curtain 18 is in the open position. Furthermore, the head-side frame 14 that covers the surroundings of the subject P's head prevents light from outside the sleeping sheet 10 from reaching the head. Furthermore, at least one of the seat heater 68, the upper heater 70, and the lower heater 71 heats the seat body 12 so that the seat body 12 is at a temperature that is comfortable for the subject P. Therefore, the subject P can easily maintain a resting state with his / her eyes closed, compared to when the noise is not canceled by the sound output from the headphones, the curtain 18 is in the open position, the head-side frame 14 is made of a light-transmitting material, and the seat body 12 is not heated.

[0102] Next, in step S15, the sensor control unit 85 controls the biological information sensor 73 to acquire biological information of the subject P. The biological information sensor 73 continues acquiring biological information of the subject P until the end time of the nap period arrives. The biological information acquired by the biological information sensor 73 is recorded in the storage 58 together with ID information representing the subject P and information related to the time the biological information was acquired.

[0103] Next, in step S16, the time management unit 86 of the ECU 50 determines whether the nap time acquired in step S12 has ended. Specifically, the time management unit 86 starts counting the timer from the time when the start instruction receiving unit 76 receives a signal to start use in step S11, and determines that the nap time has ended when the nap time has been reached.

[0104] If the ECU 50 determines in step S16 that the nap time has ended, the process proceeds to step S 18. On the other hand, if the ECU 50 determines in step S16 that the nap time has not ended, the process proceeds to step S17.

[0105] The stop control unit 87 of the ECU 50 determines whether or not an end instruction has been given in step S17. Specifically, the stop control unit 87 determines whether or not the subject P has operated the stop button displayed on the display device 75 (touch panel). If it is determined that the stop button has been operated, the ECU 50 proceeds to step S18. Therefore, the ECU 50 proceeds to step S18 when the nap time has ended, or when the ECU 50 receives an end instruction from the subject P before the end of the nap time.

[0106] If it is determined in step S17 that the end instruction has not been received from the subject P, the ECU 50 returns to step S16 to determine whether the nap time has ended.

[0107] Next, in step S18, the sound control unit 84 of the ECU 50 changes the output sound of the sound output unit 74. That is, the sound control unit 84 changes the output sound output by the headphones to the subject P from white noise to a sound associated with morning, such as birdsong. As a result, the headphones output a sound suitable for shifting the subject P to an awakened state.

[0108] Next, in step S19, the seat deformation unit 80 controls the upper motor 32 and the lower motor 38 to deform the seat body 12 from the bed shape to the chair shape. At this time, the seat deformation unit 80 may deform the seat body 12 into the chair shape a predetermined time after changing the output sound in step S18.

[0109] Next, in step S20, ECU 50 wirelessly transmits to communication I / F 60 the biometric information of subject P recorded in storage 58 and the subject schedule acquired in step S11 to external server 90, together with ID information representing subject P, information relating to the time the biometric information was acquired, and information relating to the end time of the nap time.

[0110] When the process of step S20 is completed, the ECU 50 temporarily ends the process of the flowchart of FIG.

[0111] Next, the flow of processing performed by the CPU of the external server 90 will be described with reference to the flowchart of Fig. 9. The CPU of the external server 90 repeatedly executes the processing of the flowchart of Fig. 9 every time a predetermined time elapses.

[0112] First, in step S30, the estimation unit 93 of the CPU of the external server 90 determines whether the external server 90 has received biometric information of the subject P from the nap sheet 10 via wireless communication, together with ID information representing the subject P, information regarding the time the biometric information was acquired, and information regarding the end time of the nap time.

[0113] If the CPU determines that the answer is Yes in step S30, the process proceeds to step S31. In step S31, the estimation unit 93 determines whether the external server 90 has received the subject schedule from the nap sheet .

[0114] If the CPU judges "Yes" in step S31, it proceeds to step S32. In step S32, the estimation unit 93 estimates the brain fatigue level, which is the degree of brain fatigue of the subject P, based on the acquired biometric information of the subject P. At this time, the estimation unit 93 estimates the brain fatigue level at the time when the biometric information sensor 73 starts acquiring the biometric information of the subject P and the brain fatigue level at the time when the biometric information sensor 73 finishes acquiring the biometric information of the subject P. The biometric information acquired in step S15 of FIG. 8 is likely to be biometric information acquired from the subject P who is in a closed-eyes resting state. The brain fatigue level of the subject P estimated by the estimation unit 93 based on the biometric information acquired under such circumstances is more likely to accurately represent the actual brain fatigue level of the subject P than the brain fatigue level of the subject P estimated by the estimation unit 93 based on the biometric information acquired from the subject P who is not in a closed-eyes resting state.

[0115] After completing the process of step S32, the CPU proceeds to step S33. The estimation unit 93 estimates the degree of recovery from brain fatigue of the subject P during the nap based on the brain fatigue degree at the time when the biological information sensor 73 starts acquiring the biological information of the subject P and the brain fatigue degree at the time when the biological information sensor 73 finishes acquiring the biological information of the subject P, which are estimated in step S32.

[0116] After completing the process of step S33, the CPU proceeds to step S34. The estimation unit 93 estimates the degree of brain fatigue (expected accumulated value of brain fatigue) that is expected to accumulate in the subject P over a first predetermined time from the end time of the nap based on the degree of recovery from brain fatigue estimated in step S33 and the subject schedule. This first predetermined time is, for example, five hours. However, the first predetermined time may be a length other than five hours.

[0117] When performing the processes of steps S33 and S34, the estimation unit 93 of the external server 90 having the function of AI estimates the degree of recovery from brain fatigue of the subject P and the expected accumulation value of brain fatigue while referring to various information on brain fatigue of the subjects (the degree of brain fatigue at the time when the acquisition of biological information begins, the degree of brain fatigue at the time when the acquisition ends, the degree of recovery from brain fatigue of the subject during the nap time, and the expected accumulation value of brain fatigue) and information on the subject's schedule that are received by wireless communication from a large number of nap sheets 10 and recorded in the storage of the external server 90. Note that if the above information of the subject P previously acquired is recorded in the storage, the estimation unit 93 estimates the degree of recovery from brain fatigue of the subject P and the expected accumulation value of brain fatigue while taking into account each piece of information of the subject P previously acquired. The manner of recovery from brain fatigue and the expected accumulation value of brain fatigue differs for each subject. Therefore, by estimating the degree of recovery from brain fatigue and the predicted accumulation value of brain fatigue of subject P while taking into account each piece of information of subject P acquired in the past in this manner, the estimation unit 93 can estimate the degree of recovery from brain fatigue and the predicted accumulation value of brain fatigue of subject P with high accuracy. In this case, the estimation unit 93 may estimate the degree of recovery from brain fatigue and the predicted accumulation value of brain fatigue of subject P while taking into account each piece of information of another subject acquired in the past in addition to each piece of information of subject P acquired in the past.

[0118] Next, in step S35, the determination unit 94 determines a recommended behavior that the subject P should take during a second predetermined time from the end time of the nap based on the predicted accumulated brain fatigue value estimated in step S34 and the subject's schedule. The second predetermined time is, for example, 7 hours. The second predetermined time may be longer or shorter than the first predetermined time. The second predetermined time may also be the same length as the first predetermined time.

[0119] When performing the process of step S35, the determination unit 94 of the external server 90 having the function of AI determines the recommended behavior based on the predicted accumulation values ​​and subject schedules of various subjects recorded in the storage of the external server 90. If the predicted accumulation value and subject schedule of the subject P previously acquired are recorded in the storage, the determination unit 94 determines the predicted accumulation value and subject schedule of the subject P while taking into consideration the predicted accumulation value and subject schedule of the subject P previously acquired. In this case, the determination unit 94 may determine the predicted accumulation value and subject schedule of the subject P while taking into consideration the predicted accumulation value and subject schedule of another subject previously acquired in addition to the predicted accumulation value and subject schedule of the subject P previously acquired.

[0120] For example, the recommendation behavior includes the following examples 1 and 2. The recommendation behavior of example 1 corresponds to the subject schedule of example 1. The recommendation behavior of example 2 corresponds to the subject schedule of example 2. Example 1: Your brain fatigue level is level 4 when you start taking a nap, and level 2 when you finish taking a nap. Your brain fatigue has recovered by XX% due to the nap. Based on your estimated accumulated brain fatigue and the subject's schedule, we recommend that you take a 30-minute nap in 3 hours. Example 2: Your brain fatigue level at the start of your nap is level 3, and at the end of your nap it is level 2. Your brain fatigue has recovered by △△% due to the nap. Considering your estimated accumulated brain fatigue and the subject's schedule, we recommend that you take a 30-minute nap 3 hours before arriving at the other airport mentioned above.

[0121] In this embodiment, the degree of brain fatigue is defined in five stages, from level 1 to level 5. The greater the brain fatigue, the higher the number indicating the level.

[0122] Next, in step S36, the external server 90 wirelessly transmits information indicating the recommended behavior determined in step S35 to the napping sheet 10 together with ID information indicating the subject P.

[0123] When the process of step S36 is completed, or when the determinations in steps S30 and S31 are No, the external server 90 temporarily ends the process of the flowchart in FIG.

[0124] Next, the flow of processing performed by the ECU 50 of the nap seat 10 will be described with reference to the flowchart of Fig. 10. The ECU 50 repeatedly executes the processing of the flowchart of Fig. 10 every time a predetermined time elapses.

[0125] First, in step S40, the ECU 50 determines whether the napping seat 10 has received information indicating a recommended behavior together with ID information indicating the subject P from the external server 90.

[0126] If the ECU 50 determines "Yes" in step S40, the ECU 50 proceeds to step S41. In step S41, the display control unit 88 of the ECU 50 causes the display device 75 to display the received information indicating the recommended action using characters, figures, and the like.

[0127] When the process of step S41 is completed, or when the determination in step S40 is No, the ECU 50 temporarily ends the process of the flowchart in FIG.

[0128] (Action and Effects) Next, the operation and effects of this embodiment will be described.

[0129] In the behavior suggestion system 100 and the behavior suggestion method of the present embodiment, the estimation unit 93 of the external server 90 estimates the brain fatigue level, the degree of recovery from brain fatigue, and the predicted accumulated value of brain fatigue of the subject P based on the biological information of the subject P acquired by the biological information sensor 73 of the nap sheet 10. Furthermore, the determination unit 94 of the external server 90 determines a recommended behavior that the subject P should take during a second predetermined time after finishing the nap based on the predicted accumulated value of brain fatigue and the subject's schedule. That is, the determination unit 94 determines a recommended behavior that the subject P should take when he / she is in a state (e.g., standing state, working state) different from the closed-eyes resting state (predetermined state). Furthermore, the display device 75 can notify the subject P of the determined recommended behavior. Therefore, the behavior suggestion system 100 and the behavior suggestion method of the present embodiment can propose an action that the subject P should take to increase the productivity of the subject P after the nap based on the brain fatigue level of the subject P while taking into account the subject's schedule.

[0130] Furthermore, in the behavior suggestion system 100 and the behavior suggestion method of the present embodiment, the biological information sensor 73 acquires biological information of the subject P supported in a supine position on the seat body 12 of the nap seat in the bed shape. The subject P who intends to take a nap using the nap seat 10 is likely to consciously try to close his eyes and rest when supported on the seat body 12. Furthermore, the head side frame 14 of the nap seat 10 prevents light from the outside of the head side frame 14 from entering the inside of the nap seat 10. Furthermore, when the curtain 18 of the nap seat 10 is located in the closed position, the curtain 18 blocks the view above the subject P supported in a supine position on the seat body 12. Furthermore, at least one of the seat heater 68, the upper heater 70, and the lower heater 71 heat the seat body 12 so that the subject P feels that the temperature of the seat body 12 is a comfortable temperature. Furthermore, the sound (noise) around the subject P (nap seat 10) is canceled by the sound output from the headphones. Therefore, the biological information sensor 73 of the napping sheet 10 is likely to acquire biological information from the subject P who is in a resting state with his / her eyes closed. The brain fatigue level of the subject P estimated by the estimation unit 93 based on the biological information acquired from the subject P who is in a resting state with his / her eyes closed is likely to accurately represent the actual brain fatigue level of the subject P. Therefore, when the subject P who has finished taking a nap performs the recommended behavior determined by the determination unit 94 of this embodiment, the productivity of the subject P is likely to be higher than when biological information is acquired from the subject P who is not in a resting state with his / her eyes closed.

[0131] Furthermore, the subject P, who recognizes that his / her productivity has increased when he / she performs the recommended behavior determined by the determination unit 94, recognizes the importance of naps. That is, the subject P recognizes that taking a proper nap is more likely to improve the productivity of the subject P's subsequent activities than consuming a beverage containing caffeine. Therefore, the subject P is likely to actively take naps using the nap sheet 10 in his / her subsequent life.

[0132] Furthermore, the biological information of the subject P acquired by the biological information sensor 73 of the napping sheet 10 of the behavior suggestion system 100 and the behavior suggestion method of this embodiment and the subject schedule acquired by the display device 75 are wirelessly transmitted from the napping sheet 10 to the external server 90. Furthermore, the decision unit 94 of the external server 90 decides the recommended behavior based on the brain fatigue level and the subject schedule. Therefore, by installing a large number of napping sheets 10 having the biological information sensor 73 and the display device 75 in various locations, information on the brain fatigue level and recommended behavior of a large number of subjects can be collected in the external server 90. Therefore, the estimation unit 93 and decision unit 94 of the external server 90 can process this information using AI (artificial intelligence) to decide the recommended behavior that can increase the productivity of the subject P.

[0133] Furthermore, as described above, the head frame 14, the curtain 18, the seat heater 68, the upper heater 70, the lower heater 71, and the headphones of the napping seat 10 perform the above-mentioned functions. Therefore, the subject P supported in a supine position on the bed-shaped seat body 12 can take a nap efficiently.

[0134] Furthermore, the headphones of the napping seat 10 output a sound suitable for transitioning the subject P from a napping state to an awakened state. Therefore, compared to a device that changes the angle of the seat body 12 to encourage awakening, the napping seat 10 can encourage the subject P to wake up more naturally. In particular, if the subject P naps for 30 minutes or less, the headphones are likely to encourage awakening before the subject P's sleep state changes to non-REM sleep, making it easier for the subject P to achieve a sufficient awakening effect.

[0135] Although the action suggestion system 100 and the action suggestion system according to the embodiment have been described above, the design of the action suggestion system 100 and the action suggestion system can be appropriately modified without departing from the gist of the present invention.

[0136] For example, the ECU 50 (CPU 52) of the nap sheet 10 may be functionally configured to include a determination unit that determines whether or not the subject P is in a resting state with his / her eyes closed based on the biological information of the subject P acquired by the biological information sensor 73. Also, a camera that photographs the head (face) of the subject P may be installed inside the nap sheet 10, and the determination unit of the ECU 50 (CPU 52) of the nap sheet 10 may determine whether or not the subject P is in a resting state with his / her eyes closed based on the photographed data acquired by the camera. In such a modified example, for example, the estimation unit 93 may estimate the subject's brain fatigue level, the degree of recovery from brain fatigue of the subject during the nap time, and the expected accumulated value of brain fatigue without considering the biological information acquired by the biological information sensor 73 at the time when it was determined that the subject P was not in a resting state with his / her eyes closed.

[0137] Instead of the nap sheet 10, the behavior suggestion system 100 may have a bed mat that does not have a deformable function like the seat body 12 and can support the subject in a supine position. In this case, the possibility that the subject supported on the bed mat will be in a resting state with eyes closed is lower than when the subject in a supine position is supported by the seat body 12 in a bed shape. However, the subject's brain fatigue level estimated by the estimation unit 93 based on the biometric information acquired from the subject in this case is more likely to accurately represent the subject's actual brain fatigue level than the subject's brain fatigue level estimated by the estimation unit 93 based on the biometric information acquired from the subject in an upright position. The state of the subject supported on such a bed mat and not in a resting state with eyes closed also corresponds to the "predetermined state" in the claims.

[0138] The action suggestion system 100 does not need to include the external server 90. In this case, the ECU 50 of the nap seat 10 has functions corresponding to the estimation unit 93 and the determination unit 94.

[0139] The external server 90 may wirelessly transmit information about the determined recommended behavior to a mobile terminal (eg, a smartphone) carried by the subject, and the display device of this mobile terminal may display the received information about the recommended behavior.

[0140] At least one of the sound output unit 74 (alert unit) of the nap sheet 10 and the speaker (alert unit) of the mobile terminal may output the information representing the recommended behavior by voice. In this case, the display device 75 and the display device of the mobile terminal may or may not display the information representing the recommended behavior.

[0141] After the subject P takes an action according to the recommended action, information representing the evaluation result of the recommended action may be input to at least one of the display device 75 and the mobile terminal. In this case, the input information is transmitted from at least one of the display device 75 and the mobile terminal to the external server 90 and recorded in the storage of the external server 90. In this case, when performing the processing of steps S33 and S34, the estimation unit 93 estimates the degree of recovery from brain fatigue and the expected accumulation value of brain fatigue of the subject P while referring to information on brain fatigue of various subjects, information on the subject's schedule, and information representing the evaluation result of the recommended action. In this case, the estimation unit 93 may estimate the degree of recovery from brain fatigue and the expected accumulation value of brain fatigue of the subject P without referring to the recommended action given a low evaluation result, and the information on brain fatigue corresponding to this recommended action and the information on the subject's schedule. According to such a method, the degree of recovery from brain fatigue and the expected accumulation value of brain fatigue of the subject P can be estimated with high accuracy.

[0142] A directional speaker provided on the inner surface of the nap sheet 10 may be connected to the sound output unit 74, and this directional speaker may output various sounds toward the subject.

[0143] The sound output unit 74 of the nap seat 10 and the headphones may be connected via wireless communication (for example, Bluetooth (registered trademark)).

[0144] The seat body 12 may be transformed into a chair shape and a bed shape by a mechanism other than the drive mechanism 22.

[0145] The determination unit 94 may determine the recommended action based only on the predicted accumulated value of brain fatigue.

[0146] A device (eg, external server 90) having the estimation unit 93 and the determination unit 94 does not need to have an AI function.

[0147] The degree of brain fatigue may be expressed in a manner different from the above (the degree of brain fatigue defined in five stages). [Explanation of symbols]

[0148] 10. Nap Sheet 12 Seat body 12A Seat part 12B Upper body support part 12C Lower leg support 14 Head side frame 16 Foot side frame 18 Curtains 22 Rotating mechanism 62 Input / Output I / F (Input / Output Interface) (Transmitter) (Receiver) 68 Seat heater (warming device) 70 Upper heater (heating device) 71 Lower heater (heating device) 73 Biometric information sensor (acquisition unit) 75 Display device (notification unit) (schedule acquisition unit) 90 External Server 93 Estimation part 94 Decision Section 100 Action Suggestion System P Subject

Claims

1. An acquisition unit that acquires biometric information of a single subject who is in a resting state with his / her eyes closed for a predetermined period of time not exceeding 90 minutes; an estimation unit that estimates a brain fatigue level, which is a degree of brain fatigue of the subject, based on the biological information acquired by the acquisition unit; a determination unit that determines a recommended behavior that is a behavior to be taken by one of the subjects who has transitioned to at least one of a standing state and a working state, which are specific states different from the eyes-closed resting state after the acquisition unit acquires the biological information, for an activity to be performed, based on the brain fatigue degree estimated by the estimation unit; and a notification unit capable of notifying the subject of the recommended behavior; headphones that output sound to the subject for the predetermined period of time; An action suggestion system comprising:

2. The estimation unit estimates an accumulated predicted value of brain fatigue of the subject based on the biological information, The action suggestion system according to claim 1 , wherein the determination unit determines the recommended action based on the predicted accumulated value of brain fatigue and a subject's schedule.

3. The action suggestion system according to claim 2 , further comprising a determination unit that determines whether the subject is in the eyes-closed resting state.

4. a schedule acquiring unit that acquires information on a subject schedule that indicates a scheduled action to be performed by one of the subjects who has transitioned to the specific state after the acquiring unit acquires the biological information, The behavior suggestion system according to any one of claims 1 to 3, wherein the determination unit determines the recommended behavior based on the brain fatigue level estimated by the estimation unit and the subject schedule acquired by the schedule acquisition unit.

5. a transmitting unit capable of wirelessly transmitting the biological information acquired by the acquiring unit and the subject schedule acquired by the schedule acquiring unit; an external server including an estimation unit that estimates the brain fatigue level of the subject based on the biological information received from the transmission unit and a determination unit that determines the recommended action based on the brain fatigue level and the subject schedule, the external server being capable of wirelessly transmitting the recommended action; The action suggestion system according to claim 4 .

6. a receiving unit that receives the recommended action wirelessly transmitted from the external server; a notification unit capable of notifying the subject of the recommended behavior received by the receiving unit; The action suggestion system according to claim 5 .

7. The predetermined time is 30 minutes or less, The acquisition unit and the headphones are provided on a nap seat, The nap sheet is a seat body having a seat portion for supporting the buttocks and thighs of one of the subjects, an upper body support portion rotatably connected to one end of the seat portion and supporting the upper body of the subject, and a lower leg support portion rotatably connected to the other end of the seat portion and supporting the lower legs of the subject; A drive mechanism that transforms the seat body between a chair shape and a bed shape by rotating the upper body support portion and the lower leg support portion relative to the seat portion; having 7. The action suggestion system according to claim 1, wherein the sound output from the headphones is changed when the predetermined time has elapsed.

8. The nap sheet is The action suggestion system according to claim 7 , further comprising a head side frame made of a non-translucent material, which covers the periphery of the subject's head supported by the upper body support part.

9. The nap sheet is a foot side frame that covers the periphery of the subject's foot supported by the lower leg support; a curtain that is stretched between the head-side frame and the foot-side frame and is movable between a closed position that covers an upper portion of the seat body and an open position that opens an upper portion of the seat body; The action suggestion system according to claim 8 , further comprising:

10. The nap sheet is 10. The action suggestion system according to claim 7, further comprising a heating device for heating the seat body.

11. A step of acquiring biometric information of a single subject in a resting state with eyes closed for a predetermined period of time not exceeding 90 minutes; outputting sound to the subject through headphones for the predetermined period of time; A step of estimating a brain fatigue level, which is a degree of brain fatigue of the subject, based on the acquired biological information; A step of determining a recommended action to be taken by one of the subjects who has transitioned to at least one of a standing state and a working state, which are specific states different from the eyes-closed resting state after the biological information is acquired, for an activity to be performed, based on the estimated brain fatigue level; and a step of notifying the subject of the recommendation behavior; The action suggestion method has the following features.

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