program

Abstract

To provide a program and the like capable of providing information on shower bathing, which assists adjustment of an autonomic nervous system.SOLUTION: The program acquires information on a user's autonomic nervous system, derives setting information for a shower apparatus including a temperature and switch timing at the shower apparatus which switches and discharges a high-temperature warm water and a low-temperature warm water, in accordance with the acquired information on the autonomic nervous system, and causes a computer to execute processing of outputting the derived setting information for the shower apparatus.SELECTED DRAWING: Figure 13

Description

[Technical Field]

[0001] The present invention relates to a program, an information processing device, an information processing method, a shower system, and a method for generating a learning model. [Background technology]

[0002] 2. Description of the Related Art Conventionally, shower devices that discharge hot water heated by a heat source from a shower nozzle or the like have been widely used.

[0003] Patent Document 1 discloses a shower device equipped with a front shower nozzle that sprays warm water onto the front of the human body, a rear shower nozzle that sprays water onto the rear of the body, and a circuit that sprays alternately warm and cold water from the rear shower nozzle. Patent Document 1 describes how showering with warm water from the front shower nozzle and alternately showering with warm and cold water from the rear shower nozzle can promote blood circulation in the skin. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Unexamined Patent Publication No. 61-272024 Summary of the Invention [Problem to be solved by the invention]

[0005] The shower device of Patent Document 1 is a technology that focuses on promoting blood circulation in the skin, and does not take into consideration the aspect of providing information about showering that helps regulate the autonomic nervous system.

[0006] The main objective of the present disclosure is to provide a program or the like that can provide information about showering that supports the regulation of the autonomic nervous system. [Means for solving the problem]

[0007] A program according to one aspect of the present disclosure causes a computer to execute a process of acquiring information related to a user's autonomic nervous system, deriving setting information for a shower device that switches between discharging high-temperature hot water and low-temperature hot water and the timing of switching between these two conditions based on the acquired information related to the autonomic nervous system, and outputting the derived setting information for the shower device.

[0008] A shower system according to one aspect of the present disclosure includes an information processing device and a shower device, wherein the information processing device acquires information related to a user's autonomic nervous system, and based on the acquired information, derives setting information for the shower device, including the temperature and switching timing for the shower device, which switches between high-temperature and low-temperature water, and outputs the derived setting information for the shower device, and the shower device includes a foot shower nozzle that switches between high-temperature and low-temperature water, and a full-body shower nozzle that discharges high-temperature water, and a control device that controls the foot shower nozzle to switch between high-temperature and low-temperature water and the full-body shower nozzle to discharge high-temperature water at a temperature and switching timing based on the output setting information.

[0009] A method for generating a learning model according to one aspect of the present disclosure includes acquiring training data including information about a user's autonomic nerves, user settings for a target state of the autonomic nerves, and setting information including temperature and switching timing for a shower device, and generating a learning model based on the training data. A learning model is generated that is trained to output setting information including temperature and switching timing for the shower device when information regarding the regulative nerves and user settings for the target state of the autonomic nerves are input. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to provide information about showering that supports the regulation of the autonomic nervous system. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a schematic diagram of a shower system S according to a first embodiment. [Figure 2] 1 is a side view showing an example of a shower device according to a first embodiment. [Figure 3] 1 is a front view showing an example of a shower device according to a first embodiment. [Figure 4] 1 is a configuration diagram showing an example of a shower device according to a first embodiment. [Figure 5] FIG. 1 is a block diagram illustrating an example of the configuration of an information processing device. [Figure 6] FIG. 10 is a diagram showing an example of the contents of information stored in a history information DB. [Figure 7] FIG. 2 is a block diagram illustrating an example of the configuration of a user terminal. [Figure 8] FIG. 10 is a diagram illustrating an example of a determination table. [Figure 9] FIG. 10 is a schematic diagram illustrating an example of a screen for accepting settings. [Figure 10] FIG. 10 is a schematic diagram illustrating an example of a screen showing setting information. [Figure 11] FIG. 10 is a schematic diagram showing an example of a screen displaying information after a hot or cold bath. [Figure 12] FIG. 10 is a schematic diagram illustrating another example of the setting acceptance screen. [Figure 13] 10 is a flowchart illustrating an example of a processing procedure for generating setting information. [Figure 14] 10 is a flowchart showing an example of a processing procedure after a hot / cold bath. [Figure 15] FIG. 10 is an explanatory diagram illustrating an outline of a model according to a second embodiment. [Figure 16] FIG. 10 is a side view showing an example of a shower device according to a third embodiment. [Figure 17] FIG. 10 is a configuration diagram showing an example of a shower device according to a fourth embodiment. [Figure 18] FIG. 10 is a configuration diagram showing an example of a shower device according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (First embodiment) FIG. 1 is a schematic diagram of a shower system S according to a first embodiment. The shower system S includes a shower device 1, an information processing device 3, a user terminal 4, and a biosensor 5. Each device is communicatively connected via a network N, enabling data transmission and reception. The network N may include multiple networks.

[0013] Shower device 1 is installed, for example, in a bathroom in a user's home. Using shower device 1, a user can take a hot and cold bath by alternately showering in high-temperature hot water and low-temperature hot water. Shower device 1 is equipped with a control unit 11 with a communication function, and by sending and receiving data between control unit 11 and user terminal 4, various settings related to the discharge of hot and cold water for the hot and cold bath are acquired. Shower device 1 switches between discharging high-temperature hot water and low-temperature hot water according to the acquired settings.

[0014] The information processing device 3 is a device capable of various information processing and information transmission / reception, such as a server computer, a personal computer, or a quantum computer. The user terminal 4 is an information processing terminal such as a smartphone, tablet terminal, or personal computer, and is capable of transmitting and receiving data between the information processing device 3 and the shower device 1 via communication.

[0015] The biosensor 5 is a detection device that detects biometric information of the user. In this embodiment, the biosensor 5 is a heart rate sensor provided in the wearable device. The biosensor 5 detects the heartbeat of the user wearing the device at predetermined intervals. The biosensor 5 outputs the detection results to the user terminal 4. The biosensor 5 may include a blood pressure sensor, a temperature sensor, a laser sensor (pulse wave sensor), an image sensor, etc. The biosensor 5 may include multiple types of sensors. The biosensor 5 may be installed on a wall, ceiling, bed, etc. in the user's home.

[0016] Examples of biological information detected by the biosensor 5 include heart rate, cerebral blood flow, pupil state, tracheal state, blood pressure, coronary artery blood flow, bladder wall state, bladder sphincter state, digestive juice secretion state, gastrointestinal activity state, arrector pili muscle state, skin blood flow, sweat gland state, and body temperature.

[0017] A hot and cold bath is a shower in which the user alternates between hot and cold water of different temperatures. For example, the hot water temperature can be around 40°C, and the cold water temperature can be around 30°C. Such a hot and cold bath is expected to have an effect on the user's autonomic nervous system.

[0018] In the shower system S, the information processing device 3 generates setting information indicating the conditions for hot and cold bathing (shower device setting conditions) to bring the user closer to a desired autonomic nervous state. The setting information is generated based on the user's biological information obtained from the biosensor 5 or the user's goal for the state of the autonomic nervous system. The information processing device 3 provides the setting information to the user via the user terminal 4, thereby supporting the user in adjusting the state of the autonomic nervous system through hot and cold bathing.

[0019] Fig. 2 is a side view showing an example of a shower apparatus 1 according to the first embodiment. Fig. 3 is a front view showing an example of a shower apparatus 1 according to the first embodiment. The shower apparatus 1 includes a faucet body 10 that is attached to a bathroom wall. The faucet body 10 includes a foot shower nozzle 12, a full-body shower nozzle 13, and a hand shower 14 as outlets.

[0020] The faucet body 10 has a housing 15 that forms the outer shell of the body. The housing 15 is a box-shaped member. The faucet body 10 is connected to a hot water supply pipe 71 that communicates with a water heater (not shown), and a water supply pipe 72 that communicates with a water pipe. The faucet body 10 is a mixer faucet that mixes hot water supplied from the hot water supply pipe 71 and cold water supplied from the water supply pipe 72, and adjusts the temperature to a predetermined level. The hot and cold water mixed in the faucet body 10 is discharged from the outlet.

[0021] As described above, the shower device 1 has multiple outlets. In this embodiment, the foot shower nozzle 12 and the full-body shower nozzle 13 are particularly suitable for use as showers for hot and cold baths, while the hand shower 14 is suitable for use as a shower for regular showers. Figure 2 illustrates an example of a user taking a hot and cold bath while seated. The faucet body 10 is positioned on the wall of the bathroom at the height of the user's upper body facing the faucet body 10. Note that hot and cold baths do not necessarily have to be taken while seated; they can also be taken while standing.

[0022] The foot shower nozzle 12 and the full body shower nozzle 13 are positioned at different heights in the bathroom, so that the water discharge ranges toward the user are different. The foot shower nozzle 12 is positioned lower than the full body shower nozzle 13. In the first embodiment, as an example, the foot shower nozzle 12 is positioned on the lower bottom surface of the housing 15, and the full body shower nozzle 13 is positioned on the upper top surface of the housing 15. Note that the structure of the faucet body 10 shown in Figures 1 and 2 is just one example, and the foot shower nozzle 12 and the full body shower nozzle 13 may, for example, be positioned side by side.

[0023] The foot shower nozzle 12 is installed so that the outlet holes for discharging hot and cold water are directed horizontally or slightly downwards in the horizontal direction, and are not directed in a direction including a horizontal component or downwards in the direction including a horizontal component. The foot shower nozzle 12 primarily discharges hot and cold water toward the feet of the user facing the faucet body 10, or downward from the feet. In the example shown in Figure 2, the foot shower nozzle 12 has two nozzles arranged horizontally side by side to widely cover both of the user's feet. The foot shower nozzle 12 can switch between discharging high-temperature hot water and low-temperature hot water as appropriate.

[0024] The full-body shower nozzle 13 is installed with its outlet holes facing horizontally, and discharges hot water in a direction that includes a horizontal component. The full-body shower nozzle 13 discharges hot water primarily toward the user's body. In the example shown in Figure 2, the full-body shower nozzle 13 has multiple nozzles arranged horizontally to widely cover the user's entire body. The full-body shower nozzle 13 discharges high-temperature hot water.

[0025] The foot shower nozzle 12 and full body shower nozzle 13 may be able to change the direction in which they spray hot and cold water. The foot shower nozzle 12 and full body shower nozzle 13 do not have to be attached directly to the faucet body 10, but may be fixed, for example, to a support provided on the faucet body 10 or to the bathroom wall. The foot shower nozzle 12 and full body shower nozzle 13 may be configured so that their positions in the height direction are adjustable.

[0026] The hand shower 14 has a shower head that discharges hot and cold water connected to a flexible hose, and can be held by the user. The user can hold the shower head in their hand and move it within the movable range of the hose to discharge hot and cold water at any position. The hand shower 14 may be used in a detachable state held in a shower holder attached to the bathroom wall. The hand shower 14 discharges high-temperature hot water. The hand shower 14 is optional.

[0027] Using the foot shower nozzle 12, a user can take a hot / cold bath by alternately showering with high-temperature water and low-temperature water. While using the foot shower nozzle 12, the user can also use the full-body shower nozzle 13 or hand shower 14 to shower the upper body, including the area around the heart, with high-temperature water. Using multiple showers allows for a comfortable hot / cold bath without excessively cooling the area around the heart. The foot shower nozzle 12 can be used not only on the feet, but also on any part of the body suitable for a hot / cold bath, such as the hands or the entire lower body.

[0028] As shown in Figure 3, a flow adjustment handle 16 and a switching handle 17 are provided on one side of the faucet body 10. The flow rate can be adjusted by turning the flow adjustment handle 16. The full-body shower nozzle 13 and the hand shower 14 can be switched by turning the switching handle 17.

[0029] Two temperature control handles 18 are provided on the other side of the faucet body 10, lined up one above the other. Temperature can be adjusted by turning the temperature control handles 18. The upper temperature control handle 18 is a temperature control handle for hot water on the high temperature side, i.e., high-temperature hot water. The lower temperature control handle 18 is a temperature control handle for hot water on the low temperature side, i.e., low-temperature hot water. The two temperature control handles 18 make it possible to adjust the temperature of the high-temperature hot water and the low-temperature hot water independently.

[0030] An operation unit 19 for receiving various operations is provided on the front of the faucet body 10. The user can perform various operations on the shower device 1 through the operation unit 19. The operation unit 19 is equipped with a hot / cold bath button 191 for taking a hot / cold bath. By pressing the hot / cold bath button 191, high-temperature hot water and low-temperature hot water can be discharged from the foot shower nozzle 12. The operation unit 19 can be used to control the flow of high-temperature hot water and low-temperature hot water from the foot shower nozzle 12. It may also be provided with a button for adjusting the amount of water. Note that the hand shower 14 is not shown in FIG.

[0031] Housing 15 of faucet body 10 houses control unit 11, which controls the operation of shower device 1, first temperature adjustment section 211, second temperature adjustment section 212 (see FIG. 4), and the like.

[0032] Fig. 4 is a configuration diagram showing an example of the shower apparatus 1 of the first embodiment. As shown in Fig. 4, the shower apparatus 1 includes a control unit 11, a first temperature adjustment unit 211, and a second temperature adjustment unit 212. The control unit 11 includes a CPU (Central Processing Unit) as a control unit (not shown), a memory, a communication module, etc., and controls the operation of the shower apparatus 1. A power supply device 22 such as a battery is connected to the control unit 11.

[0033] The hot water supply pipe 71 and the water supply pipe 72 are connected to a first temperature adjustment unit 211 and a second temperature adjustment unit 212, respectively. The first temperature adjustment unit 211 and the second temperature adjustment unit 212 mix hot water and cold water and discharge hot water adjusted to a predetermined temperature. The first temperature adjustment unit 211 and the second temperature adjustment unit 212 can be, for example, a thermostat. The thermostat is equipped with a mixing valve such as a thermo cartridge, and adjusts the temperature of the hot water by changing the amount of hot water and cold water mixed. Note that the first temperature adjustment unit 211 and the second temperature adjustment unit 212 may be configured to be connected to either the hot water supply pipe 71 or the water supply pipe 72, respectively, and to supply hot water or cold water.

[0034] The first temperature adjustment unit 211 adjusts the temperature of the hot water to a first temperature for high-temperature hot water in response to operation of the temperature adjustment handle 18 for high-temperature hot water. The hot water adjusted by the first temperature adjustment unit 211 corresponds to high-temperature hot water. The second temperature adjustment unit 212 adjusts the temperature of the hot water to a second temperature for low-temperature hot water in response to operation of the temperature adjustment handle 18 for low-temperature hot water. The hot water adjusted by the second temperature adjustment unit 212 corresponds to low-temperature hot water. The shower device 1 may be equipped with three or more temperature adjustment units.

[0035] Pipe 231 connected to first temperature adjustment unit 211 is connected to switching valve 244 via on-off valve 241, branches via switching valve 244, and is connected to full-body shower nozzle 13 and hand shower 14. Pipe 232 connected to second temperature adjustment unit 212 is connected to foot shower nozzle 12 via on-off valve 242. Pipe 231 connected to first temperature adjustment unit 211 and pipe 232 connected to second temperature adjustment unit 212 branch downstream of on-off valve 241 and on-off valve 242, and are connected by pipe 233. On-off valve 243 is provided midway through pipe 233.

[0036] The on-off valves 241 to 243 may be electromagnetic valves using solenoids, for example. The on-off valves 241 to 243 may also be electrically operated valves using motors. The on-off valves 241 to 243 are electrically connected to the control unit 11. A control unit of the control unit 11 controls the opening and closing of the on-off valves 241 to 243. The control unit receives setting information related to switching between high-temperature hot water and low-temperature hot water from the user terminal 4 via the communication module, and opens and closes the on-off valves 241 to 243 in accordance with the received setting information.

[0037] By opening on-off valve 241 and alternately opening and closing on-off valves 242 and 243, it is possible to switch between supplying high-temperature hot water and low-temperature hot water to foot shower nozzle 12. By opening on-off valve 241 and switching selector valve 244, high-temperature hot water is selectively supplied to either full-body shower nozzle 13 or hand shower 14. Control unit 11 and on-off valves 241-243 function as a switching unit.

[0038] When the on-off valve 241 is open, the on-off valve 242 is closed, the on-off valve 243 is open, and the switching valve 244 is switched to the direction of the full-body shower nozzle 13, the foot shower nozzle 1 High-temperature hot water is discharged from foot shower nozzle 12 and full-body shower nozzle 13. When on-off valve 241 is open, on-off valve 242 is open, on-off valve 243 is closed, and switching valve 244 is switched toward full-body shower nozzle 13, low-temperature hot water is discharged from foot shower nozzle 12 and high-temperature hot water is discharged from full-body shower nozzle 13. Note that switching valve 244 may be switched one more time, or a separate switching valve may be provided so that water can be discharged into the faucet.

[0039] The first temperature adjustment section 211 and the second temperature adjustment section 212 may be configured to receive a set temperature from the control unit 11, for example, and adjust the temperature according to the received set temperature.

[0040] 5 is a block diagram showing an example of the configuration of the information processing device 3. The information processing device 3 includes a control unit 31, a storage unit 32, and a communication unit 33. The information processing device 3 may be configured to perform distributed processing using multiple computers, may be realized by multiple virtual machines provided in a single server, or may be realized using a cloud server.

[0041] The control unit 31 includes a processor using one or more CPUs (Central Processing Units), GPUs (Graphics Processing Units), etc. The control unit 31 controls each component and executes processing using built-in memories such as ROMs (Read Only Memory) or RAMs (Random Access Memory), clocks, counters, etc.

[0042] The storage unit 32 includes a non-volatile memory such as a hard disk, a flash memory, or an SSD (Solid State Drive). The storage unit 32 may be an external storage device connected to the information processing device 3. The storage unit 32 stores programs and data referenced by the control unit 31. The programs stored in the storage unit 32 include a program 3P for causing a computer to execute processing related to the generation of setting information.

[0043] The program (program product) stored in the storage unit 32 may be recorded on a computer-readable recording medium. The storage unit 32 stores a program read from the recording medium 3A by a reading device. The recording medium 3A may be a magnetic disk, an optical disk, a semiconductor memory, or the like. Alternatively, the program may be downloaded from an external server connected to a communications network and stored in the storage unit 32. The program 3P may be a single computer program or may be composed of multiple computer programs, and may be executed on a single computer or on multiple computers interconnected by a communications network.

[0044] The storage unit 32 also stores a model 321 and a history information DB (Data Base) 322. The model 321 is used to derive setting information. The history information DB 322 is a database that accumulates history information of hot and cold baths.

[0045] The communication unit 33 includes a communication module for communicating with an external device via a network N such as the Internet. The control unit 31 transmits and receives data to and from the user terminal 4 via the communication unit 33.

[0046] The configuration of the information processing device 3 is not limited to the above example, and may include, for example, an operation unit for accepting user operations, a display unit for displaying various information, and the like.

[0047] 6 is a diagram showing an example of the contents of information stored in the history information DB 322. The history information DB 322 stores records that link information such as the user ID of the user who took a hot / cold bath, biological information, user settings, and setting information, using, for example, an ID for identifying the history information as a key.

[0048] The biological information is biological information detected by the biological sensor 5, and includes, for example, heart rate data. The biological information may include biological information before and after the hot / cold bath. The history information DB 322 may also include information related to the autonomic nerves based on the biological information. Details of the information related to the autonomic nerves will be described later.

[0049] The user settings are settings for the hot / cold bath received from the user, and include information indicating the setting for the target state of the autonomic nervous system after the hot / cold bath. The target state of the autonomic nervous system after the hot / cold bath is pre-classified into multiple types, for example, depending on the goal of the hot / cold bath. As an example, the target state of the autonomic nervous system includes "relaxation" when a relaxed state is desired, and "vitality" when an active state such as improved concentration is desired.

[0050] The setting information is information related to the settings of the shower apparatus 1 for hot and cold baths. The setting information includes the temperature of the shower apparatus 1 and the switching timing. The temperature includes the temperature of high-temperature hot water and the temperature of low-temperature hot water. The switching timing includes the discharge time of high-temperature hot water and the discharge time of low-temperature hot water, and the number of cycles.

[0051] 7 is a block diagram showing an example of the configuration of the user terminal 4. The user terminal 4 includes a control unit 41, a storage unit 42, a communication unit 43, a display unit 44, and an operation unit 45.

[0052] The control unit 41 includes one or more processors using a CPU, a GPU, etc. The control unit 41 controls each component and executes processing using built-in memory such as a ROM or RAM, a clock, a counter, etc.

[0053] The storage unit 42 includes a nonvolatile memory such as a hard disk, a flash memory, or an SSD. The storage unit 42 stores programs and data referenced by the control unit 41. The programs stored in the storage unit 42 include a program 4P for causing a computer to execute processing related to the acquisition of setting information. The program (program product) stored in the storage unit 42 may be recorded in a computer-readable manner on a recording medium. The storage unit 42 stores a program read from the recording medium 4A by a reading device. Alternatively, a program may be downloaded from an external server connected to a communication network and stored in the storage unit 42.

[0054] The communication unit 43 includes one or more communication modules for performing communication-related processing. The control unit 41 transmits and receives data via the network N between the information processing device 3, the control unit 11 of the shower device 1, and the biosensor 5 through the communication unit 43. The communication unit 43 may include a communication module for communicating using a communication protocol such as short-range wireless communication, and may transmit and receive data via short-range wireless communication.

[0055] The display unit 44 includes a display device such as a liquid crystal display or an organic EL (electroluminescence) display. The display unit 44 displays various information in accordance with instructions from the control unit 41. The operation unit 45 is an interface that accepts user operations. The operation unit 45 includes, for example, a keyboard, a touch panel device with a built-in display, a speaker, a microphone, etc. The operation unit 45 accepts operation input from the user and sends a control signal to the control unit 41 according to the operation content.

[0056] In the shower system S configured as described above, setting information for the shower device 1 for hot and cold baths is provided from the information processing device 3 to the user terminal 4. A method for generating the setting information will be described in detail below. In this embodiment, when using the shower system S, the user performs predetermined initial setting registration using the user terminal 4. By performing the initial setting registration, the user The user information corresponding to the account information issued to the user is registered, and the user terminal 4 is paired with the shower device 1 and the biosensor 5.

[0057] The information processing device 3 derives the setting information using a model 321 that outputs setting information for the shower device 1 based on information related to the autonomic nerves of the user.

[0058] The information regarding the user's autonomic nerves includes information indicating the state of the user's autonomic nerves before the hot / cold bath and information indicating the target state of the autonomic nerves after the hot / cold bath.

[0059] The state of the autonomic nervous system before the hot / cold bath is generated based on the user's biological information before the hot / cold bath. The state of the autonomic nervous system before the hot / cold bath includes, for example, the balance of the autonomic nervous system. The balance of the autonomic nervous system is the balance between the sympathetic nervous system and the parasympathetic nervous system. It is generally known that when a person is in a stressful state, the sympathetic nervous system is dominant, and when a person is in a relaxed state, the parasympathetic nervous system is dominant.

[0060] The balance between the sympathetic and parasympathetic nervous systems can be expressed as the ratio (LF / HF) of the high frequency (HF) component to the low frequency (LF) component, which is obtained by power spectrum analysis of the user's heart rate data. The HF component is an index of parasympathetic nervous activity, and the LF component is an index of sympathetic nervous activity. LF / HF corresponds to a stress index, and the higher the LF / HF ratio, the higher the level of stress.

[0061] The method for calculating LF / HF is well known and a detailed description will be omitted, but it can be found by acquiring time-series data on heart rate fluctuations (RRI: R-R Interval) based on heart rate data over a predetermined period of time, calculating a power spectrum using the acquired time-series data on heart rate fluctuations, and extracting the HF and LF components. LF / HF is the integral of the response spectrum of the LF component relative to the integral of the response spectrum of the HF component. The state of the autonomic nervous system before taking a hot or cold bath may be represented by the power spectrum of the sympathetic and parasympathetic nerves.

[0062] The state of the autonomic nervous system before the hot / cold bath may include the degree of fatigue. The degree of fatigue may be, for example, the autonomic nervous power (total power value) or the heart rate variability (HRV). The total power value is a value indicating the overall function of the autonomic nervous system, and is the sum of the integral value of the response spectrum of the HF component and the integral value of the response spectrum of the LF component. The larger the total power value, the lower the degree of fatigue and the more clearly one is able to switch between relaxation and vitality, while the smaller the total power value, the higher the degree of fatigue.

[0063] HRV is a value that indicates the change in the length of each heartbeat, and can be calculated based on RRI. Parameters that indicate HRV may include, for example, SDNN, rMSSD, and CVRR. Methods for calculating each parameter are well known, so explanations will be omitted. The lower the HRV, the higher the degree of fatigue.

[0064] The information processing device 3 acquires heart rate data detected by the biosensor 5 before the user takes a hot or cold bath through the user terminal 4, and derives the state of the user's autonomic nerves before the hot or cold bath, including the LF / HF and fatigue level, based on the acquired heart rate data. The information processing device 3 may also derive spectral data on the sympathetic and parasympathetic nerves as the state of the autonomic nerves before the hot or cold bath.

[0065] The information processing device 3 may use other biological data instead of or in addition to heart rate data as biological information to derive the state of the autonomic nervous system before taking a hot or cold bath. The following characteristics of biological information can be taken into consideration when deriving the state of the autonomic nervous system before taking a hot or cold bath. When the sympathetic nervous system is dominant, there is a decrease in cerebral blood flow, dilation of the pupils, acceleration of heartbeat, relaxation of the trachea, an increase in blood pressure, a decrease in coronary artery blood flow, expansion of the bladder wall, contraction of the bladder sphincter, suppression of digestive juice secretion, and gastric congestion. Symptoms include suppression of intestinal activity, contraction of the arrector pili muscles, decreased blood flow to the skin, expansion of sweat glands, and a drop in body temperature.When the parasympathetic nervous system is dominant, symptoms include increased cerebral blood flow, constriction of the pupils, suppression of heartbeat, constriction of the trachea, a drop in blood pressure, increased coronary artery blood flow, contraction of the bladder wall, expansion of the bladder sphincter, promotion of digestive juice secretion, promotion of gastrointestinal activity, and an increase in body temperature.

[0066] The information processing device 3 is not limited to deriving the state of the autonomic nervous system before a hot or cold bath based on biometric information, but may also obtain the state of the autonomic nervous system before a hot or cold bath, for example, by accepting input or selection from the user regarding the state of the autonomic nervous system before a hot or cold bath through the user terminal 4.

[0067] The information processing device 3 may estimate the state of the autonomic nervous system before taking a hot or cold bath using a machine learning technique. The information processing device 3 may create a learning model in advance that outputs information indicating the state of the autonomic nervous system before taking a hot or cold bath when at least one of heart rate, blood pressure, body temperature, and skin blood flow is input, and store the model in the storage unit 32. The information processing device 3 may generate the state of the autonomic nervous system before taking a hot or cold bath according to various biological information using this learning model.

[0068] The information processing device 3 may classify the state of the autonomic nervous system before taking a hot or cold bath into multiple types depending on the values ​​of LF / HF and fatigue level. For example, the state of the autonomic nervous system before taking a hot or cold bath may be classified into "exhausted" when LF / HF is equal to or greater than a preset threshold, and "sleepy" when LF / HF is less than the preset threshold.

[0069] The target state of the autonomic nervous system through hot and cold bathing is acquired by accepting user settings for the target state of the autonomic nervous system through the user terminal 4. In this embodiment, for example, multiple types of target states (target modes) of the autonomic nervous system classified according to LF / HF or fatigue level values ​​are prepared in advance, and user settings for the prepared target modes are accepted. In this embodiment, the target states of the autonomic nervous system include, for example, "relaxation" and "vitality." Other target states of the autonomic nervous system may also include "refreshment," "fatigue recovery," "activity," "concentration," etc. The user can select a target state of the autonomic nervous system according to the purpose of the hot and cold bathing as a user setting. The user setting is not limited to setting a target mode, but may also include setting target values ​​for LF / HF or fatigue level.

[0070] The model 321 of the first embodiment derives setting information using a judgment table 323. Fig. 8 is a diagram showing an example of the judgment table 323. As shown in Fig. 8, the judgment table 323 stores, in table format, combinations of the state of the autonomic nervous system before a hot / cold bath and the target state of the autonomic nervous system, in association with setting information. The setting information includes the temperatures and discharge times of the high-temperature hot water and the low-temperature hot water, and the number of cycles.

[0071] As an example, if a user desires to be active after a hot / cold bath, the temperature difference between the high-temperature hot water and the low-temperature hot water is set to be relatively large so as to give dominance to the sympathetic nervous system. If a user desires to be relaxed after a hot / cold bath, the temperature difference between the high-temperature hot water and the low-temperature hot water is set to be relatively small so as to give dominance to the parasympathetic nervous system. Furthermore, if the user is more fatigued before the hot / cold bath, the discharge time is set to be relatively long and the number of cycles is set to be large. The information processing device 3 uses the determination table 323 to identify setting information corresponding to the state of the autonomic nervous system before the hot / cold bath and the target state of the autonomic nervous system. The information processing device 3 may prepare multiple determination tables 323 with different setting contents and store the user information to which each determination table 323 is to be applied in association with each other.

[0072] The information processing device 3 may derive the setting information using only information indicating the target state of the autonomic nerves as information on the user's autonomic nerves. In this case, the information processing device 3 acquires only the user setting for the target state of the autonomic nerves. The information processing device 3 uses a determination table 323 that associates the target state of the autonomic nerves with setting information to derive the setting information according to the acquired user setting. The information processing device 3 may derive the setting information using only the state of the autonomic nerves before the hot / cold bath as information about the user's autonomic nerves. In this case, the information processing device 3 acquires only the state of the autonomic nerves before the hot / cold bath. The information processing device 3 may use a determination table 323 that associates the state of the autonomic nerves before the hot / cold bath with setting information to identify the setting information corresponding to the acquired state of the autonomic nerves before the hot / cold bath.

[0073] The information processing device 3 transmits the identified setting information to the user terminal 4. The setting information transmitted to the user terminal 4 is further transferred to the control unit 11. The control unit 11 receives the discharge times and cycle numbers of the high-temperature hot water and the low-temperature hot water.

[0074] To start a hot / cold bath, the user sets the temperatures of the high-temperature water and the low-temperature water using the temperature control handle 18 in accordance with the setting information obtained using the user terminal 4. The user then presses the hot / cold bath button 191 on the operation unit 19. The control unit 11 accepts the operation to start the hot / cold bath via the operation unit 19. The control unit 11 controls the opening and closing of the on-off valves 241-243 in accordance with the received discharge time and number of cycles. The control unit 11 switches between discharging high-temperature water and low-temperature water from the foot shower nozzle 12, and also discharges high-temperature water from the whole-body shower nozzle 13. When the predetermined number of cycles has been completed, the discharge of hot water ends. In this way, one hot / cold bath is completed.

[0075] The information processing device 3 executes processes such as accepting user settings and presenting setting information through a screen displayed on the user terminal 4. A specific description will be given below with reference to an example screen.

[0076] Fig. 9 is a schematic diagram showing an example of a screen for accepting settings. The user terminal 4 displays the screen for accepting settings on the display unit 44, as shown in Fig. 9, based on screen information provided by the information processing device 3 in response to login processing using account information. The information processing device 3 acquires user settings using the screen for accepting settings.

[0077] The screen for receiving settings displays a graph 441 with the user's fatigue level on the vertical axis and the autonomic nerve balance on the horizontal axis. The fatigue level decreases toward the top of the page and increases toward the bottom of the page. The autonomic nerve balance increases toward the right of the page and decreases toward the left of the page. Objects 442 indicating multiple types of autonomic nerve states are superimposed on the graph 441 and associated with the fatigue level and autonomic nerve balance values. In the example shown in FIG. 9, four objects 442, labeled "sleepy," "exhausted," "relaxed," and "energy," are displayed on the graph 441 as classification names of autonomic nerve states.

[0078] Graph 441 displays the state of the user's autonomic nervous system before taking a hot / cold bath in a recognizable manner. The state of the autonomic nervous system before taking a hot / cold bath is displayed, for example, by applying processing such as coloring, framing, or blinking to an object 442 on graph 441 that corresponds to the user's autonomic nervous system state before taking a hot / cold bath ("sleepy" in the example of FIG. 9). In the example shown in FIG. 9, object 442 that displays "sleepy" is hatched to indicate a predetermined display color, and text displaying "before hot / cold bath" is displayed near object 442. The state of the user's autonomic nervous system before taking a hot / cold bath may be displayed on graph 441 by displaying predetermined marker objects, etc., that indicate the user's fatigue level and autonomic nervous system balance value before taking a hot / cold bath.

[0079] For example, when the information processing device 3 accepts a login, it acquires the user's biological information from the biological sensor 5 via the user terminal 4. The information processing device 3 identifies the state of the user's autonomic nerves before the hot / cold bath based on the acquired biological information, and generates a graph 441 associated with the identified state of the autonomic nerves.

[0080] Furthermore, among the objects 442 displayed on the graph 441, the objects 442 associated with the target states of the autonomic nerves ("Relaxed" and "Vitality" in the example of FIG. 9) are configured to be selectable by a tap operation, etc. In the example shown in FIG. 9, the objects 442 displayed as "Relaxed" and "Vitality" are hatched to indicate that they are displayed in a different color from the object 442 displayed as "Sleepy", thereby making the selectable target states recognizable.

[0081] The user selects one of the objects 442 that indicates a desired target state of the autonomic nerves ("vitality" in the example of FIG. 9). The control unit 41 of the user terminal 4 accepts input of the target state of the autonomic nerves via the operation unit 45. The control unit 41 transmits the accepted user setting for the target state of the autonomic nerves to the information processing device 3.

[0082] The information processing device 3 derives setting information using the above-described model 321 in accordance with the state of the autonomic nerves of the user before taking a hot or cold bath and the user settings acquired through the user terminal 4. The information processing device 3 generates a screen showing the derived setting information and displays it via the user terminal 4. Fig. 10 is a schematic diagram showing an example of the screen showing the setting information.

[0083] The screen showing the setting information includes a display field 443 that displays the setting information. The display field 443 displays the setting information, such as the set temperatures of the high-temperature hot water and the low-temperature hot water, the discharge time, and the number of cycles. In addition to text information, the setting information is displayed using a graph with the vertical axis representing temperature and the horizontal axis representing time. When the information processing device 3 derives the setting information, it generates text data and a graph according to the derived setting information and displays them in the display field 443.

[0084] The screen showing the setting information also includes an OK button 444 that is selected when taking a hot or cold bath using the setting information. The OK button 444 functions as a send instruction button for sending the setting information to the shower apparatus 1. When the user wants to take a hot or cold bath using the setting information displayed on the screen, the user taps the OK button 444. When the control unit 41 of the user terminal 4 receives the tap operation on the OK button 444 via the operation unit 45, it sends the setting information to the control unit 11 of the shower apparatus 1.

[0085] The information processing device 3 may acquire the user's biological information after the hot / cold bath and provide a screen showing the information after the hot / cold bath to the user terminal 4. Fig. 11 is a schematic diagram showing an example of the screen showing the information after the hot / cold bath. The screen showing the information after the hot / cold bath displays the state of the user's autonomic nerves after the hot / cold bath.

[0086] The screen showing information after a hot / cold bath displays a graph 445 with the user's level of fatigue and autonomic nervous balance as axes, similar to that in Fig. 9, and the state of the user's autonomic nervous system after a hot / cold bath is displayed in a recognizable manner on the graph 445. In the example shown in Fig. 11, an object 446 showing the state of the user's autonomic nervous system after a hot / cold bath ("vitality" in the example in Fig. 9) is framed to indicate that it is the state of the user's autonomic nervous system after a hot / cold bath.

[0087] When the information processing device 3 acquires biological information after the hot / cold bath through the user terminal 4, it identifies the state of the autonomic nerves after the hot / cold bath based on the acquired biological information after the hot / cold bath. The information processing device 3 generates a graph 445 that associates the identified state of the autonomic nerves after the hot / cold bath. The information processing device 3 may display these states simultaneously on the screen so that they can be recognized, for example by performing a predetermined display process on objects 446 on the graph 445 that correspond to the state of the autonomic nerves before the hot / cold bath, the target state of the autonomic nerves, and the state of the autonomic nerves after the hot / cold bath.

[0088] The information processing device 3 derives the state of the autonomic nerves after the hot / cold bath based on the biological information. However, for example, the state of the autonomic nerves after a hot / cold bath may be acquired by receiving an input or selection from the user regarding the state of the autonomic nerves after a hot / cold bath through the user terminal 4.

[0089] According to the above screen, the user can clearly recognize the state of the autonomic nervous system before the hot / cold bath through graph 441. Then, by comparing the state of the autonomic nervous system before the hot / cold bath with the target state of the autonomic nervous system, the user can appropriately set the target state of the autonomic nervous system after the hot / cold bath. In addition, by displaying the state of the autonomic nervous system after the hot / cold bath through graph 445, the user can clearly understand the effects of the hot / cold bath.

[0090] Fig. 12 is a schematic diagram showing another example of the setting reception screen. The setting reception screen shown in Fig. 12 displays a graph showing the power spectrum of the sympathetic nerve and the parasympathetic nerve as the state of the autonomic nerve.

[0091] The setting reception screen includes a graph 447 showing changes in power versus frequency for the user's sympathetic and parasympathetic nerves before a hot or cold bath, and a plurality of recommended graphs 448 showing changes in power versus frequency for the sympathetic and parasympathetic nerves. The recommended graphs 448 are generated for each of the target states (target modes) of the autonomic nerves, which are classified into a plurality of types in advance. Text data explaining the target states of the autonomic nerves shown in the recommended graphs 448 is displayed near the recommended graphs 448.

[0092] The information processing device 3 generates a graph 447 showing the state of the user's autonomic nerves before the hot / cold bath based on the biological information acquired through the user terminal 4. The information processing device 3 also reads out a recommended graph 448 corresponding to each target mode stored in advance. The information processing device 3 displays the generated graph 447 and the recommended graph 448 for each target mode on a screen for accepting settings.

[0093] Each recommended graph 448 is configured to be selectable by tapping or the like. The user selects one of the recommended graphs 448 that indicates the desired target state of the autonomic nerves. The control unit 41 of the user terminal 4 accepts input of the recommended graph that indicates the target state of the autonomic nerves via the operation unit 45. The control unit 41 transmits the user settings for the accepted recommended graph 448 to the information processing device 3.

[0094] According to the above screen, the user can visually and easily recognize the state of the sympathetic and parasympathetic nerves and the balance between the sympathetic and parasympathetic nerves through the graph 447.

[0095] The information processing device 3 may generate a screen showing information after a hot / cold bath, even when configured to display a graph showing a power spectrum, similar to the configuration that displays graphs of fatigue level and autonomic nerve balance. The information processing device 3 generates a graph showing changes in power with respect to frequency for the user's sympathetic and parasympathetic nerves after a hot / cold bath based on biological information after the hot / cold bath, and displays the graph on a screen showing information after the hot / cold bath.

[0096] The setting reception screen may be configured to allow selection between a screen including a graph of fatigue level and autonomic nerve balance shown in Fig. 9 and a screen including a graph showing a power spectrum shown in Fig. 12. The information processing device 3 outputs a setting reception screen including either of the graphs in accordance with the selection of display content received from the user.

[0097] The information processing device 3 may update the judgment table 323 based on the target state of the autonomic nerves and the actual state of the autonomic nerves of the user after taking a hot / cold bath. If the classification of the target state of the autonomic nerves and the actual state of the autonomic nerves of the user after taking a hot / cold bath do not match, the information processing device 3 updates the content of the setting information in the judgment table 323 according to a predetermined rule.

[0098] For example, if the user's target state is "energy" and the actual state after the hot / cold bath is "relaxed," the following corrections are made: the high-temperature water temperature is increased by a predetermined amount, the low-temperature water temperature is decreased by a predetermined amount, the discharge time of the high-temperature water or low-temperature water is shortened by a predetermined amount, or the number of cycles is decreased by a predetermined number. Customizing the determination table 323 according to the state of the autonomic nervous system for each user makes it possible to provide setting information that is more suitable for each user.

[0099] 13 is a flowchart showing an example of a processing procedure for generating setting information. The processing in each of the following flowcharts may be executed by the control unit 31 in accordance with a program 3P stored in the storage unit 32 of the information processing device 3, and may also be executed by the control unit 41 in accordance with a program 4P stored in the storage unit 42 of the user terminal 4, or may be realized by dedicated hardware circuits (e.g., FPGA or ASIC) provided in each of the control units 31 and 41, or may be realized by a combination thereof.

[0100] The control unit 41 of the user terminal 4 accepts login using the account information and acquires pre-hot / cold bath biometric information by communicating with the biometric sensor 5 (step S11). The biometric sensor 5 may transmit previously stored biometric information to the user terminal 4 in response to the establishment of communication with the user terminal 4, or may transmit biometric information detected over a predetermined period of time after the establishment of communication with the user terminal 4. The control unit 41 transmits the acquired pre-hot / cold bath biometric information to the information processing device 3 (step S12).

[0101] The control unit 31 of the information processing device 3 receives the user's biological information before the hot / cold bath (step S13). The control unit 31 analyzes the received biological information before the hot / cold bath to obtain the state of the autonomic nerves before the hot / cold bath (step S14).

[0102] The control unit 31 generates a setting reception screen for receiving user settings (step S15). The setting reception screen includes various graphs showing the state of the autonomic nerves before the hot / cold bath. The control unit 31 transmits the generated setting reception screen to the user terminal 4 (step S16).

[0103] The control unit 41 of the user terminal 4 receives the setting acceptance screen (step S17), and displays the received setting acceptance screen on the display unit 44 (step S18).

[0104] The control unit 41 accepts user settings via the operation unit 45 (step S19). Specifically, the control unit 41 accepts input of user settings for the target state of the autonomic nerves by accepting a selection for the target state of the autonomic nerves or a recommended graph showing the target state of the autonomic nerves via a screen for accepting settings. The control unit 41 transmits the accepted user settings to the information processing device 3 (step S20).

[0105] The control unit 31 of the information processing device 3 receives the user settings (step S21). The control unit 31 derives setting information using the model 321 based on the state of the autonomic nerves before the hot / cold bath and the target state of the autonomic nerves as the user settings (step S22). In step S22, the control unit 31 refers to the determination table 323 to identify setting information corresponding to the state of the autonomic nerves before the hot / cold bath and the user settings. If multiple determination tables 323 are stored, the control unit 31 identifies the determination table 323 corresponding to the logged-in user and derives setting information by referring to the identified determination table 323.

[0106] The control unit 31 associates the biological information before the hot / cold bath, the state of the autonomic nerves before the hot / cold bath, the user settings, the setting information, etc., and stores them in the history DB 322 (step S23). The control unit 31 generates a screen showing the identified setting information, and transmits the generated screen showing the setting information to the user terminal 4 (step S24).

[0107] The control unit 41 of the user terminal 4 receives the screen showing the setting information (step S25) and displays the screen showing the received setting information on the display unit 44 (step S26). The control unit 41 transmits the received setting information to the control unit 11 of the shower apparatus 1 (step S27). In step S27, the control unit 41 may transmit the setting information in response to the instruction to transmit the setting information received using the screen showing the setting information.

[0108] In the above-described process, the information processing device 3 is not limited to transmitting the setting information to the shower device 1 via the user terminal 4, but may also transmit the setting information directly to the shower device 1.

[0109] Fig. 14 is a flowchart showing an example of a processing procedure after a hot / cold bath. The processing of Fig. 14 is started in response to receiving an input operation for ending a predetermined hot / cold bath, which is performed after a hot / cold bath, for example.

[0110] The control unit 41 of the user terminal 4 acquires post-hot / cold bath biological information through communication with the biosensor 5 (step S31). The control unit 41 transmits the acquired post-hot / cold bath biological information to the information processing device 3 (step S32).

[0111] The control unit 31 of the information processing device 3 receives the user's post-hot / cold bath biological information (step S33). The control unit 31 analyzes the received post-hot / cold bath biological information to obtain the state of the autonomic nerves after the hot / cold bath (step S34). The state of the autonomic nerves after the hot / cold bath corresponds to information about the autonomic nerves after the hot / cold bath. The control unit 31 stores the obtained post-hot / cold bath state in the history DB 322 (step S35).

[0112] The control unit 31 generates a screen showing information after the hot / cold bath, including the acquired state of the autonomic nerves after the hot / cold bath (step S36). The control unit 31 transmits the generated screen showing the information after the hot / cold bath to the user terminal 4 (step S37).

[0113] The control unit 41 of the user terminal 4 receives the screen showing the information after the hot / cold bath (step S38). The control unit 41 displays the received screen showing the information after the hot / cold bath on the display unit 44 (step S39).

[0114] The control unit 31 of the information processing device 3 determines whether to update the determination table 323 by comparing the target state of the autonomic nerves accepted as the user setting with the actual state of the autonomic nerves of the user after the hot / cold bath (step S40).

[0115] If it is determined that the target state of the autonomic nerves and the classification of the state of the autonomic nerves after a hot or cold bath match and therefore the determination table 323 is not to be updated (step S40: NO), the control unit 31 skips the update process.

[0116] If it is determined that the judgment table 323 should be updated because the classification of the target state of the autonomic nervous system and the state of the autonomic nervous system after a hot or cold bath do not match (step S40: YES), the control unit 31 updates the setting information of the judgment table 323 according to predetermined rules (step S41) and terminates the series of processes.

[0117] In the above-mentioned step S40, the control unit 31 may determine to update the judgment table 323 if the difference between the fatigue level or autonomic nerve balance value in the target state of the autonomic nerve and the state of the autonomic nerve after the hot / cold bath is greater than or equal to a threshold value.

[0118] The processing subject in the above-described flowchart is not limited. Some or all of the processing may be performed by the user terminal 4. The information processing device 3 and the user terminal 4 are not limited to being provided separately, but may be a single device. Furthermore, some or all of the processing performed by the information processing device 3 and the user terminal 4 may be performed by the control unit 11. The control unit 11 essentially includes the information processing device 3 and the user terminal 4, and may be configured to accept various operations from the user via an operation unit 19 provided in the faucet main body 10, for example, and to display various information on a display device such as a display device (not shown) provided in the faucet main body 10.

[0119] In the above example, control unit 11 automatically switches the output of foot shower nozzle 12. However, switching the output of foot shower nozzle 12 may also be performed by the user. For example, the user may manually switch foot shower nozzle 12 between high-temperature and low-temperature hot water on and off using operation unit 19 of shower apparatus 1, based on the output time and cycle count settings. Shower apparatus 1 may also automatically set the temperature and switch the output. In this case, user terminal 4 transmits both the set temperature and the switching cycle to control unit 11 as setting information.

[0120] According to this embodiment, a foot shower nozzle 12 capable of alternately discharging high-temperature and low-temperature water can be used to provide a comfortable hot / cold bath. The information processing device 3 provides optimal setting information according to the user's biometric information and user settings, enabling an effective hot / cold bath to optimally regulate the state of the autonomic nervous system.

[0121] (Second embodiment) In the second embodiment, a configuration will be described in which setting information is derived using a model 321 that uses a machine learning technique. Differences from the first embodiment will be mainly described below, and components that are common to the first embodiment will be assigned the same reference numerals and detailed descriptions thereof will be omitted.

[0122] 15 is an explanatory diagram illustrating an overview of the model 321 of the second embodiment. The model 321 is a model for outputting setting information using information related to the autonomic nerves of the user and user settings for the target state of the autonomic nerves as input.

[0123] Model 321 is a DQN (Deep Q Network) that learns information about the user's autonomic nerves and setting information corresponding to the user's setting for the target state of the autonomic nerves, for example, by deep reinforcement learning. Model 321 is a model that outputs an action value for evaluating setting information to be output when information about the user's autonomic nerves and a state quantity indicating the user's setting for the target state of the autonomic nerves are input.

[0124] Model 321 has an input layer to which state quantities are input, an intermediate layer that recognizes the state quantities, and an output layer that outputs an action value that indicates the value of specific setting information (action). The input layer has multiple neurons that receive information about the user's autonomic nerves and input of user settings, and passes the input information to the intermediate layer. The intermediate layer compresses each piece of information input to the input layer and extracts features of the state quantities. The output layer has multiple neurons corresponding to multiple pieces of setting information, and each neuron outputs an action value for each piece of setting information. Model 321 may have two or more intermediate layers.

[0125] The information on the user's autonomic nerves input to the model 321 is, for example, information indicating the state of the autonomic nerves before a hot / cold bath, which is generated based on heart rate data. The information indicating the state of the autonomic nerves before a hot / cold bath may be, for example, a classification name indicating the state of the autonomic nerves, a value of the fatigue level and the balance of the autonomic nerves, or spectrum data of the autonomic nerves.

[0126] The information about the user's autonomic nerves input to the model 321 may include information generated from biological data other than heart rate data. The information about the user's autonomic nerves may also include the biological information itself.

[0127] The user settings input to model 321 may be, for example, a classification name indicating the target state of the autonomic nervous system, a value of fatigue level and autonomic nervous system balance, or a recommended graph corresponding to the autonomic nervous system spectrum data.

[0128] Activation values ​​for a plurality of setting information, including the temperatures and switching cycles of high-temperature hot water and low-temperature hot water, are output from the output layer of the model 321. The information processing device 3 selects the setting information with the maximum activation value based on the activation values ​​output from the model 321, thereby deriving information related to the user's autonomic nerves and setting information corresponding to the user settings.

[0129] The information processing device 3 generates the model 321 by deep reinforcement learning using predetermined data. In reinforcement learning, information about the user's autonomic nerves and the user's settings for the target state of the autonomic nerves are defined as a "state," setting information is defined as an "action," a required "reward" is calculated, and a Q value or a Q function (action value function) value is learned.

[0130] If the input to the model 321 is the state s and the output from the model 321 is the action value Q(s, a), the update formula for the action value function is expressed by the following formula (1).

[0131] Q(s,a)←Q(s,a)+α(R+γmaxQ(s_next,a_next)-Q(s,a)…(1) however, s:Status a: Action selected in state s α: learning coefficient R: Reward obtained as a result of the action γ: discount rate maxQ(s_next, a_next): The maximum value of the action value Q for the action that can be taken in the next state

[0132] The information processing device 3 performs machine learning on the model 321 by optimizing the parameters of the model 321, for example, by backpropagation, so that the TD error, i.e., the second term on the right side of the above formula (1), approaches zero. The parameters of the model 321 are updated so that the error between the expected value of the reward and the current behavioral evaluation approaches zero.

[0133] The information processing device 3 performs a process of learning the setting information using the above-mentioned reinforcement learning. Specifically, the information processing device 3 refers to information stored in the history information DB 322 to acquire user settings for the state of the autonomic nerves before the hot / cold bath and the target state of the autonomic nerves, the setting information, and information about the autonomic nerves after the hot / cold bath. The information processing device 3 defines the user settings for the state of the autonomic nerves before the hot / cold bath and the target state of the autonomic nerves as state s, defines the setting information as action a, and performs reinforcement learning based on a reward (score) calculated according to the information about the autonomic nerves after the hot / cold bath.

[0134] The information processing device 3 calculates the reward based on the user's settings for the target state of the autonomic nerves stored in the history information DB 322 and information on the autonomic nerves after a user who actually took a hot / cold bath using the setting information. The information on the autonomic nerves after a hot / cold bath is, for example, the state of the autonomic nerves after the hot / cold bath, which is generated based on biological information after the hot / cold bath.

[0135] The reward is calculated so that the smaller the deviation between the target state of the autonomic nervous system and the state of the autonomic nervous system after the hot / cold bath, the higher the value. If the deviation between the target state of the autonomic nervous system and the state of the autonomic nervous system after the hot / cold bath is large, a reward of zero or a negative reward is given. The formula for calculating the reward is not particularly limited.

[0136] The information processing device 3 trains the model 321 based on information about the user's autonomic nerves and the user's settings for the target state of the autonomic nerves input to the model 321, an action value Q output when each state variable is input, and a calculated reward. The information processing device 3 may train the model 321 using history information of multiple users. The information processing device 3 may deploy the updated model 321 to the user terminal 4 or the control unit 11.

[0137] When the learning is completed, the information processing device 3 stores definition information related to the learned model 321 in the storage unit 32 as the learned model 321. This makes it possible to construct a model 321 that can appropriately derive setting information including the temperatures and switching cycles of high-temperature hot water and low-temperature hot water based on information related to the user's autonomic nerves and user settings for the target state of the autonomic nerves.

[0138] In the above, DQN has been described as model 321, but model 321 may be configured to adjust setting information using a table that associates state quantities with action values. The configuration of model 321 is not limited, and it is sufficient if it can identify setting information for information related to the user's autonomic nerves and user settings for the target state of the autonomic nerves.

[0139] The model 321 may be based on a supervised learning algorithm. When a supervised learning algorithm is used, the model 321 may be trained using training data in which setting information that is a correct value is associated with information about the user's autonomic nerves and user settings for a target state of the autonomic nerves.

[0140] The information processing device 3 derives setting information using the model 321 by executing the same process as the flowchart in Fig. 13. The information processing device 3 inputs information about the user's autonomic nerves acquired via the user terminal and the user settings for the target state of the autonomic nerves into the trained model 321. Based on the action value values ​​output from the model 321, the information processing device 3 selects setting information corresponding to the highest action value, thereby acquiring setting information.

[0141] According to this embodiment, the information processing device 3 can derive setting information with high accuracy using a machine learning model. The information processing device 3 can perform processing to learn setting information using a reinforcement learning method.

[0142] (Third embodiment) FIG. 16 is a side view showing an example of a shower apparatus 1 according to the third embodiment. The shower apparatus 1 shown in FIG. 16 is equipped with a full-body shower 13a equipped with a shower head and a hose instead of the full-body shower nozzle 13. The full-body shower 13a may be used by being detachably attached to a shower holder attached to the wall or ceiling of the bathroom. The full-body shower 13a sprays hot water vertically downward. The full-body shower 13a sprays hot water from above the user's head, for example. This configuration allows the user to enjoy hot and cold baths in a variety of positions.

[0143] (Fourth embodiment) FIG. 17 is a diagram showing an example of the shower device 1 according to the fourth embodiment. The faucet body 10 is not limited to a thermostatic type, and any other mixing type can be used. The shower device 1 shown in Figure 17 is configured to adjust the temperature and flow rate of hot water in response to a control signal from a control unit 11. The shower device 1 is equipped with a first temperature and flow rate adjuster 261 and a second temperature and flow rate adjuster 262 instead of the first temperature adjuster 211 and second temperature adjuster 212 of the first embodiment.

[0144] The hot water supply pipe 71 and the cold water supply pipe 72 are connected to a first temperature and flow rate adjustment unit 261 and a second temperature and flow rate adjustment unit 262, respectively. The first temperature and flow rate adjustment unit 261 and the second temperature and flow rate adjustment unit 262 are temperature and flow rate adjustment units equipped with, for example, a thermistor, an electric valve, and a flow meter. The temperature and flow rate adjustment unit calculates a hot water and cold water mixing ratio that will result in a predetermined discharge temperature according to the respective temperatures of the supplied hot water and cold water, and controls the electric valves according to the respective flow rates of the hot water and cold water to achieve the calculated mixing ratio, thereby discharging hot water adjusted to the predetermined temperature and flow rate.

[0145] The first temperature and flow rate adjuster 261 is connected to a pipe 281 which is connected to the hand shower 14 via an on-off valve 271, and a pipe 282 which is connected to the full body shower nozzle 13 via an on-off valve 272. The second temperature and flow rate adjuster 262 is connected to a pipe 283 which is connected to the foot shower nozzle 12 via an on-off valve 273. The on-off valves 271 to 273 are electrically connected to the control unit 11. The control unit 11 controls the opening and closing of the on-off valves 271 to 273.

[0146] The second temperature and flow rate adjusting unit 262 changes the adjusted temperature of hot water at predetermined time intervals in response to a control signal from the control unit 11. As a result, high-temperature hot water and low-temperature hot water are discharged through the second temperature and flow rate adjusting unit 262 at a temperature and switching cycle in accordance with the setting information.

[0147] According to the above configuration, the temperature and flow rate of the hot water are controlled using control unit 11. The shower apparatus 1 can automatically set the temperature and switch the discharge based on the setting information received from user terminal 4, improving the convenience of the shower apparatus 1.

[0148] (Fifth embodiment) 18 is a diagram showing an example of a shower apparatus 1 according to a fifth embodiment. The shower apparatus 1 of the fifth embodiment controls the discharge from each outlet using various electrically operated valves. The shower apparatus 1 includes a first temperature adjustment unit 211 and a second temperature adjustment unit 212, similar to those of the first embodiment.

[0149] The high-temperature hot water adjusted by first temperature adjustment unit 211 and the low-temperature hot water adjusted by second temperature adjustment unit 212 are each supplied to foot shower nozzle 12 via on-off valve 291. The high-temperature hot water adjusted by first temperature adjustment unit 211 and the low-temperature hot water adjusted by second temperature adjustment unit 212 are each supplied to full-body shower nozzle 13 via selector valve 294 and on-off valve 292, and are also supplied to hand shower 14 via selector valve 294 and on-off valve 293. On-off valves 291 to 293 and selector valve 294 are equipped with drive units such as actuators.

[0150] Hot water supply pipe 71 and cold water supply pipe 72 are connected to first temperature adjustment unit 211 and second temperature adjustment unit 212, respectively. Pipe 295 connected to first temperature adjustment unit 211 branches downstream, one end connected to pipe 297 via selector valve 294 and the other connected to pipe 298 via on-off valve 291. Pipe 296 connected to second temperature adjustment unit 212 branches downstream, one end connected to pipe 297 via selector valve 294 and the other connected to pipe 298 via on-off valve 291. Pipe 297 branches downstream, one end connected to hand shower 14 via on-off valve 293 and the other connected to full-body shower nozzle 13 via on-off valve 292. Pipe 298 is connected to foot shower nozzle 12.

[0151] The on-off valves 291-293 and the switching valve 294 are electrically connected to the control unit 11 and the operation unit 19, and the drive unit operates in response to signals output from the control unit 11 and the operation unit 19. The control unit 11 controls the opening and closing of the on-off valves 291-293 and the switching of the switching valve 294. By controlling the opening and closing of the on-off valve 291 and the switching direction of the flow path, the control unit 11 can switch between discharging high-temperature hot water and low-temperature hot water from the foot shower nozzle 12.

[0152] When on-off valve 291 is open and switched toward first temperature adjustment unit 211, switching valve 294 is switched toward first temperature adjustment unit 211, on-off valve 292 is open, and on-off valve 293 is closed, high-temperature hot water is discharged from foot shower nozzle 12 and full-body shower nozzle 13. When on-off valve 291 is open and switched toward second temperature adjustment unit 212, switching valve 294 is switched toward first temperature adjustment unit 211, on-off valve 292 is open, and on-off valve 293 is closed, low-temperature hot water is discharged from foot shower nozzle 12, and high-temperature hot water is discharged from full-body shower nozzle 13.

[0153] The embodiments disclosed above are illustrative in all respects and are not restrictive. The scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope equivalent to the claims. Furthermore, at least some of the above-described embodiments may be combined in any desired manner. The sequences shown in the above-described embodiments are not limited, and the order of each process may be changed within a range consistent with the present invention, and multiple processes may be executed in parallel. The entity that performs each process is not limited, and the process of each device may be executed by another device within a range consistent with the present invention. [Explanation of symbols]

[0154] S shower system 1. Shower equipment 10 Faucet body 11 Control Unit 12 foot shower nozzles 13 Full-body shower nozzle 14 hand shower 211 1st temperature adjustment section 212 Second temperature adjustment section 3. Information processing equipment 31 Control Unit 32 Storage section 33 Communications Department 3P Program 3A Recording Media 321 model 322 History Information DB 323 Decision Table 4. User terminal 41 Control Unit 42 Storage section 43 Communications Department 44 Display section 45 Operation section 4P Program 4A Recording Media 5. Biometric sensors

Claims

1. Acquire information about the user's autonomic nervous system, deriving setting information for a shower device that switches between high-temperature hot water and low-temperature hot water and the timing of switching between these temperatures in accordance with the acquired information about the autonomic nerves; Outputting the derived setting information for the shower device; A user setting for a target state of the autonomic nerves through a hot / cold bath from the user is acquired as information about the autonomic nerves. Deriving the setting information according to the acquired user setting A program that causes a computer to perform a process.

2. Acquire information about the user's autonomic nervous system, deriving setting information for a shower device that switches between high-temperature hot water and low-temperature hot water and the timing of switching between these temperatures in accordance with the acquired information about the autonomic nerves; Outputting the derived setting information for the shower device; The setting information is derived based on information about the autonomic nerves generated based on the biological information of the user and a user setting for a target state of the autonomic nerves through hot and cold bathing from the user. A program that causes a computer to perform a process.

3. The setting information is derived using a table that stores a plurality of settings in association with the information about the autonomic nerves and the user settings. The program according to claim 2.

4. Acquire information about the user's autonomic nervous system, deriving setting information for a shower device that switches between high-temperature hot water and low-temperature hot water and the timing of switching between these temperatures in accordance with the acquired information about the autonomic nerves; Outputting the derived setting information for the shower device; The model is trained to output setting information including the temperature and switching timing of the shower device when information about the user's autonomic nerves and user settings for the target state of the autonomic nerves are input, and the setting information is derived by inputting information about the user's autonomic nerves and user settings for the target state of the autonomic nerves. A program that causes a computer to perform a process.

5. Acquire information about the autonomic nervous system after a user has taken a hot or cold bath according to the setting information, The model is trained based on the acquired information on the user's autonomic nerves after the hot / cold bath, the information on the user's autonomic nerves before the hot / cold bath, the user's settings for the target state of the autonomic nerves, and the setting information. The program according to claim 4.

6. Acquire biometric information of the user; Generate information about the autonomic nerves based on the acquired biological information The program according to any one of claims 1 to 5.

7. generating information about the autonomic nerves based on biological information including at least one of the user's heart rate, blood pressure, body temperature, and skin blood flow rate; The program according to any one of claims 1 to 6.

8. Acquire the user's biological information before and after the hot / cold bath and the user's settings for the target state of the autonomic nerves through the hot / cold bath; The acquired user's biometric information and user settings are stored in a storage device. The program according to any one of claims 1 to 7.

9. Output a graph with fatigue level or autonomic nerve balance as the axis, Through the output graph, a user setting for a target state of the autonomic nerves through hot and cold bathing is acquired from the user. The program according to any one of claims 1 to 8.

10. Outputs a graph based on fatigue level and autonomic nervous balance, a fatigue level and an autonomic nerve balance of the user before a hot or cold bath according to the biological information of the user are outputted in correspondence with the graph; Through the output graph, a user setting for a target state of the autonomic nerves through hot and cold bathing is acquired from the user. The program according to any one of claims 1 to 9.

11. acquiring a fatigue level and an autonomic nerve balance state of the user after the hot / cold bath according to the biological information of the user after the hot / cold bath; The acquired fatigue level and autonomic nerve balance state of the user after the hot / cold bath are output in association with the graph. The program according to claim 10.

12. outputting a first graph showing changes in power with respect to frequency for the sympathetic nerves and parasympathetic nerves of the user before taking a hot or cold bath, which are generated based on the biological information of the user; and a plurality of recommended graphs showing changes in power with respect to frequency for the sympathetic nerves and parasympathetic nerves; By receiving a selection from the user from the plurality of output recommendation graphs, a user setting for a target state of the autonomic nerves through a hot / cold bath from the user is acquired. The program according to any one of claims 1 to 11.

13. generating a second graph showing changes in power with respect to frequency for the sympathetic and parasympathetic nerves of the user after the hot / cold bath based on the biological information of the user after the hot / cold bath; Output the generated second graph The program according to claim 12.

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