Bathroom Management System

Abstract

To create a comfortable bathroom space. [Solution] The bathroom management system according to the embodiment includes: lighting means provided in a bathroom having at least a water dispensing device and illuminating at least a part of the bathroom; detection means for detecting the horizontal and vertical position of a user within the bathroom; and lighting control means for controlling the light characteristics of the lighting means based on the position detected by the detection means.

Description

Technical Field

[0001] The disclosed embodiments relate to a bathroom management system.

Background Art

[0002] In recent years, technologies for controlling the lighting in a bathroom have been provided. For example, a technology for lighting a space in a bathroom by imitating the sky is known (for example, Patent Document 1). Also, a technology for detecting the state of a user in a bathroom using a radio wave radar or the like and controlling the ON / OFF of the lighting according to the state is known (for example, Patent Document 2).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the above-mentioned conventional technologies may not be able to realize a comfortable bathroom space. For example, in the conventional technologies, when a person is detected by a motion sensor or the like and it is detected that the person is in the target area, the lighting is turned on, and when not detected, the lighting is turned off, etc. However, since there is a time lag from the person's action to the lighting control, there is a risk of falling due to poor visibility. Also, in the conventional technologies, delicate lighting control according to the position of the user in the horizontal and vertical directions in the bathroom is not performed, and there are cases where a high-quality space cannot be produced. Thus, there is room for improvement in the above-mentioned conventional technologies from the viewpoint of realizing a comfortable bathroom space.

[0005] In view of the above points, realizing a comfortable bathroom space becomes an issue.

[0006] The embodiments of the disclosure aim to provide a bathroom management system that can realize a comfortable bathroom space. [Means for solving the problem]

[0007] A bathroom management system according to one embodiment is characterized by comprising: lighting means provided in a bathroom having at least a water dispensing device and illuminating at least a part of the bathroom; detection means for detecting the horizontal and vertical position of a user within the bathroom; and lighting control means for controlling the light characteristics of the lighting means based on the position detected by the detection means.

[0008] According to one embodiment of the bathroom management system, precise lighting control can be achieved and a sense of luxury can be created by controlling lighting according to the horizontal and vertical positions of the user in each space. In addition, by using both horizontal and vertical positions, it is possible to detect pre-movement behaviors such as standing up and proactively control the lighting as needed by the user. As a result, the bathroom management system can create a comfortable bathroom space.

[0009] In a bathroom management system according to one embodiment, the lighting control means controls the lighting means so that the optical characteristics of the lighting means are different when the user is located in the bathtub space where a bathtub is provided in the bathroom, and when the user is located in the water discharge space where a water discharge means is provided in the bathroom.

[0010] According to one embodiment of the bathroom management system, the lighting control is changed depending on whether the user is in the water outlet area or the bathtub area. For example, when the user is in the water outlet area where they may be working, the lighting is made brighter to ensure the user's safety and work efficiency. On the other hand, when the user is in the bathtub area where they are relaxing, the lighting can be dimmed to enhance the relaxation effect. In this way, the bathroom management system smoothly controls the lighting according to the user's situation, making it possible to create a comfortable bathroom space.

[0011] In a bathroom management system according to one embodiment, the lighting control means controls the lighting means such that at least one of the brightness, illuminance, color temperature, and color of the space below the vertical direction of the water outlet space is higher when the user is located in the space above the vertical direction of the water outlet space compared to when the user is located in the space above the vertical direction of the water outlet space.

[0012] According to one embodiment of the bathroom management system, the lighting is controlled so that when the user is above the water outlet area, it is brighter than when they are below it. For example, when the user stands up to use the shower or move around, the entire bathroom can be brightly illuminated, ensuring the user's safety. In this way, the bathroom management system makes it possible to create a comfortable bathroom space.

[0013] In a bathroom management system according to one embodiment, the lighting control means controls the lighting means such that at least one of the brightness, illuminance, color temperature, and color of the bathroom is lower when the user is located in the vertically lower space above the bathtub space compared to when the user is located in the vertically upper space above the bathtub space.

[0014] According to one embodiment of the bathroom management system, the lighting is controlled so that when the user is below the bathtub, it is darker than when they are above. For example, the lighting intensity can be reduced when the user is soaking in the bathtub, thereby enhancing relaxation and creating a comfortable bathroom space.

[0015] In a bathroom management system according to one embodiment, the bathroom further comprises a seating area provided on the wall side of the bathroom, and the lighting control means controls the light characteristics of the lighting means based on the detection that the user has sat on the seating area.

[0016] According to one embodiment of the bathroom management system, different lighting control is possible depending on the direction of the user's movement. This allows for lighting control in different situations depending on the destination, such as in front of the bathtub or shower, thereby creating a comfortable bathroom space.

[0017] In a bathroom management system according to one embodiment, the lighting means comprises a first lighting means installed vertically upward in the bathroom and a second lighting means installed vertically downward in the bathroom, and the lighting control means controls at least one of a first light condition in the first lighting means and a second light condition in the second lighting means.

[0018] According to one embodiment of the bathroom management system, vertical lighting is controlled by a first light that illuminates the space above and a light that illuminates the space below. Therefore, when working below, the area below is brightly illuminated, and when standing up, the area above is brightly illuminated. In this way, the bathroom management system can achieve a comfortable bathroom space by balancing workability and the creation of an elegant atmosphere.

[0019] In a bathroom management system according to one embodiment, the lighting control means controls the lighting means in accordance with the transition from a stationary state to a moving state, or from a moving state to a stationary state, within the bathroom of the user.

[0020] According to one embodiment of the bathroom management system, when the user's movement in the bathroom is minimal, the system controls the lighting to lower the illuminance, assuming the user is resting, thus providing dimming control suitable for a relaxing environment. When the user's movement is significant, the system increases the illuminance, assuming the user is performing tasks such as washing, thus providing dimming control suitable for those tasks. In this way, the bathroom management system can provide dimming control appropriate to the user's state, thereby creating a comfortable bathroom space.

[0021] In a bathroom management system according to one embodiment, the lighting control means controls the lighting means such that at least one of the brightness, illuminance, color temperature, and color of the bathroom decreases when the user is located in the bathtub space where the bathtub is provided in the bathroom and transitions to the stationary state.

[0022] According to one embodiment of the bathroom management system, when the user's movement in the bathtub is minimal, the system controls the lighting intensity to decrease, assuming the user is resting, thus providing a dimming control suitable for a relaxing environment. When the user's movement is significant, the system increases the lighting intensity, assuming the user is performing some kind of work, providing a dimming control suitable for work. In this way, the bathroom management system can provide dimming control appropriate to the user's state, thereby creating a comfortable bathroom space.

[0023] In a bathroom management system according to one embodiment, the lighting control means controls the lighting means based on the current time.

[0024] According to the bathroom management system according to one aspect of the embodiment, in order to perform lighting control based on the current time, for example, in the morning, the lighting is controlled to be bright so that the user wakes up, and after evening, the lighting is controlled to be dim so that the user can relax. By performing lighting control according to the user's life rhythm, a comfortable bathroom space can be realized.

[0025] The bathroom management system according to one aspect of the embodiment has a radio wave sensor installed in the bathroom formed by a plurality of panels, which detects changes in the state in the bathroom, and further includes a state estimation unit that estimates changes in the state in the space in the bathroom excluding the radio wave reflection region including the surface of the panel.

[0026] According to the bathroom management system according to one aspect of the embodiment, by excluding the position of the panel from the detection area, the position and movement of an object such as a person in the room can be accurately estimated without being affected by a strong reflected radio wave signal, and the state change in the bathroom can be appropriately estimated. As a result, the bathroom management system can suppress a decrease in the estimation accuracy of the state change in the bathroom.

Effect of the Invention

[0027] According to one aspect of the embodiment, a comfortable bathroom space can be realized.

Brief Description of the Drawings

[0028] [Figure 1] FIG. 1 is a plan view showing an example of a bathroom to which the bathroom management system according to the embodiment is applied and a dressing room adjacent to the bathroom. [Figure 2] FIG. 2 is a view showing an example inside a bathroom to which the bathroom management system according to the embodiment is applied. [Figure 3] FIG. 3 is a block diagram showing a configuration example related to the control of the bathroom management system according to the embodiment. [Figure 4]Figure 4 is a block diagram showing an example configuration related to state estimation according to the embodiment. [Figure 5] Figure 5 is a flowchart showing an example of the steps performed by the bathroom management system. [Figure 6] Figure 6 shows an example of a point cloud detected by a radio wave sensor in a bathroom management system. [Figure 7] Figure 7 shows an example of the radio wave intensity distribution received by the radio wave sensor of the bathroom management system. [Figure 8] Figure 8 shows an example of the distribution of Doppler velocity of radio waves received by a radio wave sensor in a bathroom management system. [Figure 9] Figure 9 shows an example of a point cloud detected by a radio wave sensor in a bathroom management system. [Figure 10] Figure 10 shows an example of the arrangement of antennas for a radio wave sensor. [Figure 11] Figure 11 shows an example of the arrangement of antennas for a radio wave sensor. [Figure 12] Figure 12 shows another example configuration of the bathroom management system. [Figure 13] Figure 13 is a top view showing an example of spatial division. [Figure 14] Figure 14 is a side view showing an example of spatial division. [Figure 15] Figure 15 shows an example of a bathroom management system configuration in which a radio wave sensor is installed on the bathroom counter. [Figure 16] Figure 16 shows an example of lighting installed in a bathroom. [Figure 17] Figure 17 shows an example of the configuration of a bathroom management system with a seating area. [Figure 18] Figure 18 shows an example of a seating area. [Figure 19] Figure 19 is a block diagram showing an example of the configuration of the control unit. [Figure 20]Figure 20 shows an example of the change in vertical position within the water discharge space. [Figure 21] Figure 21 shows an example of the change in vertical position within the bathtub space. [Figure 22] Figure 22 shows an example of changes in the state of the bathtub space. [Figure 23] Figure 23 is a flowchart showing an example of the steps performed by the bathroom management system. [Modes for carrying out the invention]

[0029] The embodiments of the bathroom management system disclosed herein will be described in detail below with reference to the attached drawings. However, the invention is not limited to the embodiments described below.

[0030] <1. Embodiments> <1-1. Examples of Bathroom Management System Applications> First, an overview of the information processing performed in the bathroom management system 1 (see Figure 3) according to the embodiment will be described with reference to Figures 1 and 2. Figure 1 is a plan view showing an example of a bathroom to which the bathroom management system according to the embodiment is applied, and a dressing room adjacent to the bathroom. Figure 2 is a diagram showing an example of the inside of a bathroom to which the bathroom management system according to the embodiment is applied. Note that the arrangement of the radio wave sensors 10a shown in Figures 1 and 2 is just one example, and other arrangement examples will be described later.

[0031] In Figures 1 and 2, the bathroom management system 1 is applied to the bathroom 2 and the adjacent space (adjacent room) the dressing room 3, which is a wet area space, and estimates changes in the state of the space within the bathroom 2.

[0032] For example, bathroom 2 is a room composed of four side panels 2a, 2b, 2c, and 2d, a floor panel 2e, and a ceiling panel 2f. Note that the side panels 2a, 2b, 2c, and 2d, the floor panel 2e, and the ceiling panel 2f may sometimes be simply referred to as panels 2a to 2f, etc. In the following, for panels 2a to 2f, the side facing the space inside bathroom 2 will be referred to as the "front surface," and the side opposite the front surface, facing outside bathroom 2, will be referred to as the "back surface." For example, metal plates that constitute the radio wave reflection area are placed on the back side of multiple panels 2a to 2f.

[0033] Of the four side panels 2a, 2b, 2c, and 2d, the side panel 2d adjacent to the dressing room 3 is partially open, forming an entrance / exit 21 for entering and exiting from the dressing room 3 to the bathroom 2. The entrance / exit 21 is equipped with a door 22 that can be opened and closed. For example, a user of the bathroom 2 (also simply called "user") opens the door 22, enters the bathroom 2 from the dressing room 3 through the entrance / exit 21, closes the door 22, and takes a bath, shower, or performs other actions inside the bathroom 2. Inside the bathroom 2 are a bathtub 4, a bathroom counter 5, a shower device 6, a mirror 7, a shower bar 8, etc. Figure 1 shows the state in which user U is located inside the bathroom 2.

[0034] The bathtub 4 is positioned along the side panel 2b of the bathroom 2, extending from one side panel 2a adjacent to the side panel 2b to the other side panel 2c, and is configured as a roughly rectangular shape in a top view. For example, the bathtub 4 has an end 41 on the side panel 2a side, an end 42 on the side panel 2b side, an end 43 on the side panel 2c side, and an end 44 on the side panel 2d side in a top view. For example, when bathing, the user positions their body along the longitudinal direction in a top view, that is, along the ends 42 and 44. In this way, the user bathes with their head positioned on the end 43 side, using the end 43 of the bathtub 4 as a pillow, and their feet positioned on the end 41 side. The end 43, which is the pillow, may be provided with a member (such as an air cushion) to stabilize the person's head.

[0035] Furthermore, the overhead shower 6a of the shower device 6 is a fixed shower head fixed to the ceiling panel 2f of the bathroom 2. The side panel 2a of the bathroom 2 may also be provided with a radio wave sensor 10a that emits radio waves into the bathroom 2, and a control unit 100 (see Figure 3) that controls the water discharge by the shower device 6 based on the signal detected by the radio wave sensor 10a. A fixed shower head refers to a shower head in which the shower head or the piping supporting the shower head is fixed to the ceiling panel or side panel, and includes not only shower heads with a fixed water discharge direction, but also shower heads with a changeable water discharge direction. Additionally, areas other than the area where the bathtub 4 is located within the bathroom 2, for example, areas including at least the area where water is discharged by the overhead shower 6a, may be referred to as the washing area.

[0036] The bathroom counter 5 is a shelf mounted on the side panel 2a below the shower bar 8 and the mirror 7, and extends horizontally to a predetermined height. The mirror 7 is mounted on the side panel 2a to the side of the shower bar 8 and is configured as a vertically elongated rectangle.

[0037] As described above, an overhead shower 6a is fixed to the ceiling panel 2f. Additionally, a shower bar 8, a mirror 7, and a bathroom counter 5 are attached to one of the side panels 2a of the bathroom 2. Furthermore, the radio wave sensor 10a may be installed on the front side of the side panel 2a, i.e., the side facing into the bathroom 2 (front surface), or on the back side of the side panel 2a, i.e., the side facing out of the bathroom 2 (back surface).

[0038] In Figures 1 and 2, the radio wave sensor 10a is installed on panel 2a of the multiple panels 2a to 2f that make up the bathroom 2, excluding panel 2d, which has an entrance / exit 21 to the bathroom 2. Thus, the radio wave sensor 10a is installed on panels 2a to c, 2e, and 2f of the multiple panels 2a to 2f that make up the bathroom 2, excluding panel 2d, which has an entrance / exit 21 to the bathroom 2.

[0039] As shown in Figure 1, the radio wave sensor 10a is installed in a bathroom 2, which is a bathroom formed by multiple panels 2a to 2f, and detects changes in the state inside the bathroom 2. For example, the radio wave sensor 10a is a radio wave radar. The radio wave sensor 10a emits radio waves into the bathroom 2 and receives the reflected radio waves.

[0040] The radio wave sensor 10a has a detection range set to a predetermined range for detecting changes in the state within the bathroom 2. For example, the detection range of the radio wave sensor 10a includes a first space including the bathtub 4 installed in the bathroom 2, and a second space including the water discharge area of ​​the shower device 6 installed in the bathroom 2. In Figure 1, the range including the space where the bathtub 4 is located (approximately the left half of the space) corresponds to the first space. Also in Figure 1, the range including the area where water is discharged by the overhead shower 6a corresponds to the second space.

[0041] The detection range of the radio wave sensor 10a includes the end portion 43 that functions as the pillow portion of the bathtub 4 installed in the bathroom 2. For example, the detection range of the radio wave sensor 10a (the range of distances from which radio waves can be received, etc.) may include the back surface of at least one of the panels 2a to 2f that make up the bathroom 2. For example, the detection range of the radio wave sensor 10a may include an area exceeding at least one of the panels 2a to 2f that make up the bathroom 2. For example, the detection range of the radio wave sensor 10a may include the four corner areas of the bathroom 2 in a top view. Note that the detection range of the radio wave sensor 10a is not limited to the above and can be set to any range as long as the desired detection is possible. Also, in Figures 1 and 2, the radio wave sensor 10a is installed at a position higher than the upper end of the bathtub 4 installed in the bathroom 2. Note that the above arrangement of the radio wave sensor 10a is merely an example, and the radio wave sensor 10a may be installed at a position lower than the upper end of the bathtub 4 installed in the bathroom 2, for example, when the detection range includes the floor panel 2e, etc.

[0042] The shower device 6 is a shower device capable of shower water discharge and spout water discharge, and has an overhead shower 6a fixed to the ceiling panel 2f, a hand shower 6b held on the shower bar 8, and a spout 6c attached to the side panel 2a.

[0043] The overhead shower 6a is fixed to the ceiling panel 2f of the bathroom 2 and is configured to spray water from above towards the bather. In Figures 1 and 2, the overhead shower 6a is positioned closer to side panels 2a and 2d than to side panels 2b and 2c when viewed from above. Specifically, the overhead shower 6a is positioned near the corner where side panel 2a, on which the mirror 7 is installed, intersects with side panel 2d, which is opposite the bathtub 4, and is configured to spray water from above the head of the bather in front of the mirror 7.

[0044] The shower bar 8 is provided on the side panel 2a and has a bar member 8a and a head holder 8b for holding the hand shower 6b. The bar member 8a is a bar-shaped member fixed to the side panel 2a so as to extend vertically, and extends parallel to the side panel 2a at a predetermined distance from the side panel 2a. The head holder 8b is attached to the bar member 8a so as to be slidable in the vertical direction and is configured to be adjustable to any height on the bar member 8a. The head holder 8b is configured to hold the hand shower 6b, and the hand shower 6b can be removed from the head holder 8b for use. That is, the hand shower 6b is not fixed to the side panel 2a. The hand shower 6b can be used either held by the user in their hand or held by the head holder 8b. In addition, a handrail can be provided as a bar-shaped member on the side panel of the bathroom 2.

[0045] The shower system 6 dispenses water in a manner corresponding to the user's operation, based on the user's operation of each component of the shower system 6. For example, if the user operates the overhead shower 6a, the shower system 6 dispenses water from the overhead shower 6a in a manner corresponding to the user's operation. For example, the bathroom management system 1 may accept the user's operation of each component of the shower system 6 through physical components such as switches or levers. Alternatively, the bathroom management system 1 may accept the user's gestures or hand signs as user operations of each component of the shower system 6 through sensors or the like.

[0046] The configuration described is merely an example, and the configuration of bathroom 2, etc., is not limited to that described above. For example, bathroom 2 may be provided with an operating unit (e.g., an operation panel) that accepts user operations. For example, an operating unit such as an operation panel has a display device that displays information and an operating device that accepts operations from any person (also called an "operator") such as a user. For example, the operating unit is used for switching modes, as described later. Furthermore, the above-described manner in which user operations are accepted for each component of the shower device 6 is merely an example, and the bathroom management system 1 may accept user operations for each component of the shower device 6 in various ways. For example, the bathroom management system 1 may accept user operations for each component of the shower device 6 through an operating unit provided in bathroom 2. In addition, the bathroom management system 1 may accept operations for each component of the shower device 6 by a user outside bathroom 2 (e.g., in the dressing room 3).

[0047] <1-2. Example of Bathroom Management System Configuration> Next, an example of the configuration of the bathroom management system 1 will be described with reference to Figures 3 and 4. Figure 3 is a block diagram showing an example configuration related to control of the bathroom management system according to the embodiment. Figure 4 is a block diagram showing an example configuration related to state estimation according to the embodiment.

[0048] The bathroom management system 1 includes, as control-related components (bathroom control system), a shower device 6, a microphone 9, a sensor unit 10, a control unit 100, a data storage unit 101, an input unit 102, a notification unit 103, lighting 104, a water temperature control unit 105a, a water volume control unit 105b, a bathtub water temperature control unit 106, a shoulder / waist bath control unit 107, air conditioning 108, and a ventilation fan 109. Note that the control-related components shown in Figure 3 are merely examples, and the control-related components of the bathroom management system 1 are not limited to those shown in Figure 3. For example, if the bathroom management system 1 does not have shoulder and waist bath functions, the bathroom management system 1 does not need to include the shoulder / waist bath control unit 107.

[0049] The shower device 6 has a discharge / stop control unit 60a (indicated as ON / OFF in Figure 3) that switches between discharging and stopping water from the overhead shower 6a (indicated as OH in Figure 3). For example, the flow path (water supply channel) controlled by the discharge / stop control unit 60a is connected to the overhead shower 6a, and the discharge and stoppage of water from the overhead shower 6a are switched according to the control of the discharge / stop control unit 60a.

[0050] Furthermore, the shower device 6 has a discharge / stop control unit 60b (indicated as ON / OFF in Figure 3) that switches between discharging and stopping water from the hand shower 6b (indicated as HS in Figure 3). For example, the flow path (water supply channel) controlled by the discharge / stop control unit 60b is connected to the hand shower 6b, and the discharge and stoppage of water from the hand shower 6b are switched according to the control of the discharge / stop control unit 60b.

[0051] Furthermore, the shower device 6 has a discharge / stop control unit 60c (indicated as ON / OFF in Figure 3) that switches between discharging and stopping water from the spout 6c (indicated as a tap in Figure 3). For example, the flow path (water supply channel) controlled by the discharge / stop control unit 60c is connected to the spout 6c, and the discharge and stopping of water from the spout 6c are switched according to the control of the discharge / stop control unit 60c. The discharge / stop control units 60a to 60c may be solenoid valves or the like.

[0052] Microphone 9 is a sensor device (microphone) that detects sound. When the bathroom management system 1 performs voice-based personal identification, Microphone 9 detects the voice of the person for personal identification. When the bathroom management system 1 performs voice-based anomaly estimation, Microphone 9 detects the sound inside the bathroom 2 for anomaly estimation.

[0053] Microphone 9 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. Microphone 9 transmits the acquired information to the control unit 100. Microphone 9 may also perform detection in response to instructions from the control unit 100. For example, microphone 9 is placed in a position to detect sound in a desired space such as the bathroom 2 or the dressing room 3. Microphone 9 may also be included in the sensor unit 10. Furthermore, if the bathroom management system 1 accepts voice input, microphone 9 may function as part of the input unit 102.

[0054] The sensor unit 10 has a sensor device that detects information used by the bathroom management system 1 for control. For example, the sensor unit 10 functions as a detection means for detecting changes in the state of the bathroom. The sensor unit 10 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. The sensor unit 10 transmits the acquired information to the control unit 100. The sensor unit 10 may perform detection in response to instructions from the control unit 100. For example, the sensor unit 10 is installed in a bathroom formed by multiple panels and has a sensor device for detecting changes in the state of the bathroom. The sensor unit 10 has a radio wave sensor 10a.

[0055] As shown in Figure 4, the radio wave sensor 10a is connected to the control unit 100 so that it can send and receive information. The radio wave sensor 10a outputs data (output data) in response to receiving radio waves. The radio wave sensor 10a transmits the output data to the control unit 100 in response to receiving radio waves.

[0056] Here, we will briefly explain the process performed by the radio wave sensor 10a. The radio wave sensor 10a emits radio waves into the bathroom 2 and receives the reflected radio waves. For example, the radio wave sensor 10a emits radio waves in each direction so as to scan the inside of the bathroom 2. The radio waves emitted from the radio wave sensor 10a are emitted in each direction so as to cover the entire detection range of the radio wave sensor 10a. The radio wave sensor 10a receives the reflected waves of the emitted radio waves. In this way, the radio wave sensor 10a emits radio waves radially into the bathroom 2 and detects the radio waves that are reflected back.

[0057] Furthermore, the radio wave sensor 10a irradiates the bathroom 2 with radio waves of a predetermined frequency at predetermined time intervals and receives the reflected radio waves. For example, the radio wave sensor 10a irradiates millimeter waves in the 60 GHz band and receives the reflected waves. Note that the above is merely an example, and any frequency can be used for the radio waves irradiated by the radio wave sensor 10a, as long as the desired processing can be performed. For example, the radio waves irradiated by the radio wave sensor 10a are preferably in the 24 GHz band to 3 THz band, more preferably in the 60 GHz band to 79 GHz band.

[0058] The radio wave sensor 10a can detect how far the radio waves emitted in each direction have propagated before being reflected. This provides coordinate information of the point where the radio waves were reflected, and objects (reflectors) located within the detection range of the radio wave sensor 10a that reflect the radio waves emitted by the radio wave sensor 10a are detected as a point cloud by the radio wave sensor 10a (see, for example, Figure 6). Since the detection performed by the radio wave sensor 10a is the same as that performed by conventional radio wave radar, a detailed explanation is omitted.

[0059] Furthermore, the sensor unit 10 is not limited to the radio wave sensor 10a, but may have any other sensors. For example, the sensor unit 10 may have a door sensor that detects the opening and closing of the bathroom door 22. For example, the sensor unit 10 may have multiple radio wave sensors 10a, including a radio wave sensor 10a for estimating the movement or position of a user in the bathroom 2, and a radio wave sensor 10a for estimating the breathing state of a user in the bathroom 2. Thus, the sensor unit 10 may have multiple radio wave sensors 10a, but this point will be discussed later.

[0060] The control unit 100 is an information processing device that performs various information processing in the bathroom management system 1. The control unit 100 performs various information processing based on information detected by the sensor unit 10, microphone 9, etc. For example, the control unit 100 estimates changes in the state inside the bathroom 2 based on the signal detected by the radio wave sensor 10a. The control unit 100 receives output data from the radio wave sensor 10a, such as the signal detected by the radio wave sensor 10a, and estimates changes in the state inside the bathroom 2 based on the received output data from the radio wave sensor 10a. For example, the control unit 100 estimates the user's actions or location based on the signal detected by the radio wave sensor 10a. For example, the control unit 100 estimates the user's actions or location within the detection range of the radio wave sensor 10a.

[0061] Furthermore, the control unit 100 is a control device that performs control in the bathroom management system 1. For example, the control unit 100 performs control related to water discharge. The control unit 100 also controls the notification by the notification unit 103. The control unit 100 performs various controls based on information detected by the sensor unit 10, microphone 9, etc. For example, the control unit 100 controls the water discharge pattern of the shower device 6 based on information detected by the sensor unit 10. The control unit 100 controls the output of information by the notification unit 103 based on information detected by the sensor unit 10, microphone 9, etc. In this case, the control unit 100 controls at least one water discharge pattern of the overhead shower 6a, hand shower 6b, and spout 6c based on the output data of the radio wave sensor 10a.

[0062] For example, the control unit 100 has a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). For example, the control unit 100 performs various information processing such as state estimation by executing a program (for example, a control program according to this disclosure) stored in the control unit 100 or in the data storage unit 101, etc., using RAM (Random Access Memory) or the like as a working area. The control unit 100 may also have an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

[0063] As shown in Figure 4, the control unit 100 includes a state estimation unit 110 and a determination unit 111. Note that the internal configuration of the control unit 100 is not limited to the configuration shown in Figure 4; other configurations are also acceptable as long as they perform the desired information processing.

[0064] The state estimation unit 110 functions as an estimation means that performs various estimation processes. For example, the state estimation unit 110 functions as a state estimation means that performs estimation processes related to various states. The state estimation unit 110 functions as a state estimation means that estimates changes in the state of the bathroom based on the output data of the radio wave sensor 10a. For example, the state estimation unit 110 estimates changes in the state of the bathroom 2 based on the signal detected by the radio wave sensor 10a.

[0065] The state estimation unit 110 estimates the state changes in the space inside the bathroom 2 by excluding the radio wave reflection region including the surfaces of panels 2a to 2f. The state estimation unit 110 estimates the state changes in the space inside the bathroom 2 by excluding the water droplet adhesion region on the surfaces of panels 2a to 2f as a radio wave reflection region. The state estimation unit 110 estimates the state changes in the space inside the bathroom 2 by excluding the four corner regions of the bathroom 2.

[0066] The state estimation unit 110 estimates the state changes inside the bathroom 2 based on data excluding received data obtained by reflection from the radio wave reflection region. The state estimation unit 110 estimates the state changes inside the bathroom 2 based on data excluding noise data based on vibration components input to the radio wave sensor 10a. The state estimation unit 110 estimates the state changes inside the bathroom 2 based on data excluding noise data based on objects present inside the bathroom 2.

[0067] The state estimation unit 110 performs a first mode that estimates the user's movement or position within the bathroom 2, and a second mode that estimates the user's breathing while they are in the bathtub 4 installed in the bathroom 2. The state estimation unit 110 also functions as a mode switching means that switches between the first mode and the second mode based on the operation of an operation unit (e.g., an operation panel) installed in the bathroom 2. For example, the state estimation unit 110 switches between the first mode and the second mode in response to the user's operation of the operation unit installed in the bathroom 2.

[0068] The above is merely an example, and the state estimation unit 110 may switch modes in various ways. For example, the state estimation unit 110 can also function as a mode switching means that switches between the first mode and the second mode based on the user's position in the bathroom 2. In this case, the state estimation unit 110 may set the mode to the second mode when the user is located inside the bathtub 4, and set the mode to the first mode when the user is located outside the bathtub 4.

[0069] For example, the state estimation unit 110 uses point cloud information obtained by detection by the radio wave sensor 10a to estimate changes in the state of the bathroom 2. For example, the state estimation unit 110 uses point cloud information obtained by detection by the radio wave sensor 10a to make estimations about moving objects in the bathroom 2. For example, the state estimation unit 110 uses point cloud information obtained by detection by the radio wave sensor 10a to identify moving objects in the bathroom 2.

[0070] For example, the state estimation unit 110 estimates that a moving object within the identified bathroom 2 is a user. For example, the state estimation unit 110 estimates the height of a user located within the bathroom 2 based on the vertical length of the point cloud corresponding to the identified user within the bathroom 2. For example, the state estimation unit 110 estimates the user's actions within the bathroom 2 based on changes in the point cloud obtained by detection by the radio wave sensor 10a.

[0071] For example, the state estimation unit 110 estimates the user's movements within the bathroom 2 (e.g., stepping over to the bathtub 4) based on changes in the shape of the point cloud obtained by detection by the radio wave sensor 10a. For example, the state estimation unit 110 estimates the user's movements within the bathroom 2 based on changes in the position of the point cloud obtained by detection by the radio wave sensor 10a.

[0072] The above-described process is merely an example, and the state estimation unit 110 may estimate changes in the state of the bathroom 2 using various information. For example, the state estimation unit 110 may estimate changes in the state of the bathroom 2 using point cloud information when no user is present in the bathroom 2. For example, the state estimation unit 110 may estimate changes in the state of the bathroom 2 using point cloud information when no user is present in the bathroom 2 and point cloud information when a user is present in the bathroom 2. For example, the state estimation unit 110 may estimate the position and movement of the user in the bathroom 2 based on the difference between point cloud information when no user is present in the bathroom 2 and point cloud information when a user is present in the bathroom 2.

[0073] The state estimation unit 110 estimates that the state change inside the bathroom 2 is abnormal based on the determination result of the determination unit 111. The state estimation unit 110 estimates that the inside of the bathroom 2 is in an abnormal state if the determination unit 111 determines that there is an abnormality in the user located inside the bathroom 2. For example, the state estimation unit 110 estimates that the inside of the bathroom 2 is in an abnormal state if the determination unit 111 determines that there is an abnormality in the user located inside the bathroom 2. For example, the state estimation unit 110 estimates that the inside of the bathroom 2 is in an abnormal state if the determination unit 111 determines that there is an abnormality in the posture of the user located inside the bathroom 2.

[0074] The state estimation unit 110 estimates the movement or posture of the body from the water discharge area of ​​the shower device 6 installed in the bathroom 2 to the bathtub 4 installed in the bathroom 2. The state estimation unit 110 estimates the user's movements within the water discharge area of ​​the shower device 6 installed in the bathroom 2. The state estimation unit 110 estimates the breathing state of the user located in the bathtub 4 installed in the bathroom 2. Note that the above processing is merely an example, and the state estimation unit 110 may use various information to estimate various state changes in the bathroom 2.

[0075] Furthermore, the state estimation unit 110 may also function as an information generation means for generating various types of information that are notified by the notification unit 103. In this case, the state estimation unit 110 generates various types of information using information acquired from other devices or information stored in the data storage unit 101. The state estimation unit 110 generates information using information acquired from the sensor unit 10, etc. The state estimation unit 110 generates information using the estimation results.

[0076] The state estimation unit 110 generates various information, such as screens (image information), to be provided to an external information processing device, using various technologies as appropriate. The state estimation unit 110 generates screens (image information), etc., to be provided to a display device, etc. For example, the state estimation unit 110 generates screens (image information), etc., to be provided to a display device, etc., based on the information stored in the data storage unit 101.

[0077] The state estimation unit 110 may generate screens (image information) etc. to be provided to an external information processing device by any processing method, as long as it is possible to generate such screens (image information). For example, the state estimation unit 110 may generate screens (image information) to be provided to a display device etc. by appropriately using various technologies related to image generation and image processing. For example, the state estimation unit 110 may generate screens (image information) to be provided to a display device etc. by appropriately using various technologies such as Java®.

[0078] The determination unit 111 functions as a determination means for performing various determinations. Based on the output data of the radio wave sensor 10a, the determination unit 111 determines whether or not there are any objects other than the user within the detection range of the radio wave sensor 10a. Based on the output data of the radio wave sensor 10a when the user is not in the bathroom 2, the determination unit 111 determines that there are objects other than the user within the detection range of the radio wave sensor 10a in an area with an intensity above a threshold when the user is not in the bathroom 2.

[0079] For example, the determination unit 111 uses point cloud information obtained by detection by the radio wave sensor 10a to determine whether or not there are any objects other than the user within the detection range of the radio wave sensor 10a. For example, the determination unit 111 may use point cloud information when the user is not located in the bathroom 2 to determine whether or not there are any objects other than the user within the detection range of the radio wave sensor 10a.

[0080] For example, the determination unit 111 may use point cloud information when no user is located in the bathroom 2 and point cloud information when a user is located in the bathroom 2 to determine whether there are any objects other than the user within the detection range of the radio wave sensor 10a. For example, the determination unit 111 may use the difference between point cloud information when no user is located in the bathroom 2 and point cloud information when a user is located in the bathroom 2 to determine whether there are any objects other than the user within the detection range of the radio wave sensor 10a. Note that the above is merely an example, and the determination unit 111 may use various information as appropriate to determine whether there are any objects other than the user within the detection range of the radio wave sensor 10a.

[0081] Furthermore, the determination unit 111 may estimate (determine) any abnormalities concerning the user located inside the bathroom 2. For example, the determination unit 111 may determine whether or not the user located inside the bathroom 2 is in an abnormal state. For example, the determination unit 111 may determine whether or not the user located inside the bathroom 2, as estimated by the state estimation unit 110, is in an abnormal state.

[0082] For example, the determination unit 111 determines that the user's condition is abnormal if the user's position within the bathroom 2 remains stationary for a predetermined period of time. For example, the determination unit 111 determines whether the user's posture within the bathroom 2 is abnormal. For example, the determination unit 111 determines whether the posture of the user within the bathroom 2, as estimated by the condition estimation unit 110, is abnormal. For example, the determination unit 111 determines that the user's condition is abnormal if the user is lying down anywhere other than the bathtub 4 within the bathroom 2. Note that the above are merely examples, and the determination unit 111 may estimate (determine) various conditions as abnormal.

[0083] The control unit 100 is not limited to the above and may have various processing units. For example, the control unit 100 may have an acquisition unit that acquires various information used for processing. For example, the control unit 100 may have a notification control unit that controls the notification unit 103. In this case, the control unit 100 controls the output of information by the notification unit 103, for example, through the notification control unit.

[0084] Furthermore, the control unit 100 may have a personal identification unit that performs personal identification (personal authentication) of users. The personal identification unit functions as an identification means that performs personal identification of users. The personal identification unit may perform personal identification of users using water-related spaces such as the bathroom 2. For example, the personal identification unit may perform personal identification of users using sensor information detected by the sensor unit 10. The personal identification unit performs personal identification (personal authentication) using information such as the physique, posture, and gait of people in the bathroom 2 obtained by detection by the radio wave sensor 10a.

[0085] For example, the personal identification unit may perform personal identification of a user based on point cloud information obtained by detection by the radio wave sensor 10a. For example, the personal identification unit may estimate that a user whose height is estimated based on the point cloud information obtained by detection by the radio wave sensor 10a is a user who used the bathroom / bathroom space at the time the point cloud information was obtained.

[0086] The above is merely an example, and any processing method may be used to identify users as long as it is possible to identify users of the water-related spaces such as bathroom 2. For example, the personal identification unit may identify users based on their actions (such as pressing a switch) on the control unit installed in bathroom 2. Alternatively, the personal identification unit may identify users by voice recognition using voice recognition technology. Furthermore, the personal identification unit may identify users using information on human fingerprints detected from areas touched by people. In this case, the sensor unit 10 may have a fingerprint sensor on a part that people touch, such as a doorknob, on a door 22 in the water-related space. For example, using a person's biometric information can enable smooth personal identification (personal authentication).

[0087] The data storage unit 101 is a storage means (memory device) for storing various types of information. The data storage unit 101 can be implemented, for example, by semiconductor memory elements such as RAM or flash memory, or by memory devices such as hard disks or optical discs. For example, the data storage unit 101 is a computer-readable recording medium that non-temporarily records data used by control programs. The data storage unit 101 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100.

[0088] The data storage unit 101 transmits the stored information to the control unit 100 in response to a request from the control unit 100. The data storage unit 101 stores the information received from the control unit 100. The data storage unit 101 is also connected to the sensor unit 10 so as to be able to send and receive signals (information) with the sensor unit 10, and stores the information (sensor information) acquired by the detection of the sensor unit 10. The data storage unit 101 stores various types of information used for control in the bathroom management system 1.

[0089] The data storage unit 101 stores various information related to the space (water-related space) including the bathroom 2 and the changing room 3. The data storage unit 101 stores the user's behavior history, including information about the user's actions and state in the water-related space. For example, the data storage unit 101 stores usage log data obtained from the analysis of the usage history (log) of the water-related space as the user's behavior history.

[0090] The data storage unit 101 stores information regarding the user's use of bathroom 2. For example, the data storage unit 101 stores the number of times bathroom 2 has been used and the date and time of use. The data storage unit 101 also stores information regarding the user's bathing in bathtub 4. For example, the data storage unit 101 stores the number of times the user has bathed and the date and time of bathing. The data storage unit 101 also stores information regarding the user's use of shower equipment 6. For example, the data storage unit 101 stores the number of times the shower equipment 6 has been used and the date and time of use.

[0091] The data storage unit 101 stores information related to the cleaning of the water-related spaces. For example, the data storage unit 101 stores information indicating the cleaning of bathroom 2. For example, the data storage unit 101 stores the number of times it has been cleaned and the date and time of cleaning. For example, if multiple users are expected to use the space including bathroom 2 and dressing room 3 (water-related space), the data storage unit 101 stores information that identifies each user (e.g., user ID) in association with the user's information.

[0092] Furthermore, the data storage unit 101 stores information about users of the space including the bathroom 2 and the changing room 3 (the wet area space) (also referred to as "user information"). For example, if multiple users of the wet area space are expected, the data storage unit 101 stores user information including information for identifying each user (also referred to as "user identification information"). For example, the data storage unit 101 stores user information including user identification information that indicates the physical characteristics of each user. For example, the data storage unit 101 stores user information including the height, weight, etc., of each user.

[0093] For example, the data storage unit 101 stores a list of users who have been pre-registered as users of bathroom 2. The user list includes a list of users who have been pre-registered as users of bathroom 2 (for example, multiple users such as family members), and information used for personal identification (personal authentication) of each user included in the list. For example, the user list may include information indicating the physical characteristics of each user, such as their height, which is used for personal identification. Also, if personal identification is performed by voice, the user list may include voice information indicating the characteristics of each user's voice.

[0094] The data storage unit 101 is not limited to the above and may store various types of information depending on the purpose. For example, the data storage unit 101 stores information indicating conditions for estimating that an abnormality has occurred in the bathroom 2 (also called "abnormality estimation conditions"). For example, the data storage unit 101 stores information indicating abnormality estimation conditions that include at least one of the following: that a user fell in the bathroom 2, that the user was in a low posture and did not move for a predetermined period of time, that an abnormal sound was detected in the bathroom 2, that an abnormality related to the user's breathing was detected, and that an abnormality related to the user's heart rate was detected.

[0095] For example, the data storage unit 101 stores external data. For example, the data storage unit 101 stores external data (external information) collected by other services, etc. For example, the data storage unit 101 stores information about the user collected by a terminal device (wearable device, etc.) carried by the user as external information. The data storage unit 101 stores information about the user's behavior collected by the user's terminal device as external information.

[0096] The above is merely an example, and the data storage unit 101 stores various types of information used for processing. The data storage unit 101 stores information used for control. The data storage unit 101 stores information used by the control unit 100 to control various components such as the shower device 6. The data storage unit 101 stores various types of information used for estimation processing. The data storage unit 101 stores information used for estimating changes in the state of the bathroom. For example, the data storage unit 101 may store various types of detection information, such as the first detection information described later. For example, the data storage unit 101 may store various types of point cloud information, such as the first point cloud information described later.

[0097] The input unit 102 receives various types of information. For example, the input unit 102 functions as a receiving unit that accepts various types of information. The input unit 102 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. The input unit 102 transmits the acquired information to the control unit 100. The input unit 102 may also accept input in response to instructions from the control unit 100.

[0098] The input unit 102 receives various operations from operators such as the administrator of the bathroom management system 1 and users of the space (wet area) including the bathroom 2 and changing room 3. For example, the input unit 102 may be integrated with a display device for displaying information. In this case, the input unit 102 may accept various operations from operators via buttons provided on the display device. Alternatively, the input unit 102 may accept various operations from operators via the display surface of the display device (e.g., a liquid crystal display) using a touch panel function.

[0099] For example, the input unit 102 may have a display device that displays information and an operating device that receives operations from an operator such as a user, and may function as an operating unit such as an operation panel. For example, the input unit 102 may be placed in any location such as the living room of a residence where a water-related space or bathroom 2 is provided. In this case, the input unit 102 may be placed in a residence where bathroom 2 is installed, and may also function as a remote control device that displays information related to bathroom 2 and receives operations related to bathroom 2. For example, the remote control device may have the functions of an input unit 102 and a notification unit 103, and may perform processing such as receiving operations from an operator, displaying information, and outputting voice.

[0100] Furthermore, for example, the input unit 102 may be provided in a terminal device (display device, etc.) owned by the operator. The terminal device is a device used by the operator. The terminal device can be implemented as, for example, a smartphone, a mobile phone, a PDA (Personal Digital Assistant), a tablet device, or a notebook PC (Personal Computer). For example, the terminal device may be a smartphone used by family members living in a house where the bathroom 2 is installed. For example, the terminal device may function as an output device that outputs information broadcast (transmitted) from the notification unit 103.

[0101] The notification unit 103 functions as a notification means for notifying various types of information. The notification unit 103 is connected to the control unit 100 so that it can send and receive signals (information) with the control unit 100. The notification unit 103 performs various notifications in response to instructions from the control unit 100. For example, the notification unit 103 notifies information to a predetermined target person. The notification unit 103 notifies the predetermined target person by displaying the information, communicating the information, outputting the information as sound, etc.

[0102] For example, the notification unit 103 has a configuration that includes communication functions such as a communication circuit and a communication device, and transmits information to be notified to a predetermined target person to a device (information processing device) corresponding to that predetermined target person. For example, the notification unit 103 is connected to a predetermined network such as the Internet by wire or wireless, and transmits and receives information with an external information processing device. For example, the notification unit 103 transmits and receives information with other devices that have communication functions, such as a remote control device or a terminal device, via a predetermined network such as the Internet.

[0103] The notification unit 103 transmits information to an external information processing device. For example, the notification unit 103 transmits various information to a remote control device, terminal device, etc. The notification unit 103 notifies a predetermined target person by transmitting the information estimated by the control unit 100 to the remote control device, terminal device, etc. The notification unit 103 notifies a predetermined target person by transmitting the information generated by the control unit 100 to the remote control device, terminal device, etc.

[0104] The above is merely an example, and the notification unit 103 may take any form and have any configuration as long as it can provide the desired notification. For example, if the notification unit 103 displays information to a predetermined target person, it may have a display function. In this case, the notification unit 103 may be a display device. Alternatively, the notification unit 103 may be integrated with a display device that has the function of displaying information, such as a remote control device or terminal device. Furthermore, if the notification unit 103 outputs information as sound (sound output) to a predetermined target person, it may have a sound output function. In this case, the notification unit 103 may be a sound output device. Additionally, the notification unit 103 may be integrated with a device that has the function of outputting information as sound, such as a remote control device or terminal device.

[0105] Lighting 104 has a lighting device that illuminates a predetermined space. Lighting 104 has a lighting device that illuminates the bathroom 2. Lighting 104 has a lighting device that illuminates the dressing room 3. Lighting 104 is connected to the control unit 100 so that it can send and receive signals (information) with the control unit 100. Lighting 104 may dim the lighting device in response to instructions from the control unit 100. Lighting 104 may turn on the lighting device in response to instructions from the control unit 100. Lighting 104 may turn off the lighting device in response to instructions from the control unit 100.

[0106] For example, the lighting unit 104 receives control instruction information from the control unit 100 and controls the lighting device based on the received control instruction information. The lighting unit 104 performs dimming control of the lighting device based on the control instruction information. For example, the lighting unit 104 turns the lighting device on or off based on the control instruction information.

[0107] The water temperature control unit 105a functions as a water temperature control means that controls the temperature of the hot water (water) supplied to the shower device 6. The water temperature control unit 105a is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. The water temperature control unit 105a controls the temperature of the hot water (water) supplied to the shower device 6 in accordance with instructions from the control unit 100. For example, the water temperature control unit 105a has a valve (temperature control valve) for adjusting the temperature of the hot water (water) supplied to the shower device 6. For example, the flow path (water supply path) controlled by the water temperature control unit 105a is connected to the flow path (water supply path) controlled by the water volume control unit 105b.

[0108] The water volume control unit 105b functions as a water volume control means that controls the amount of hot water (or cold water) supplied to the shower device 6. The water volume control unit 105b is connected to the control unit 100 so that it can send and receive signals (information) with the control unit 100. The water volume control unit 105b controls the water volume in accordance with instructions from the control unit 100. For example, the water volume control unit 105b has a valve (flow rate control valve) for adjusting the flow rate of hot water (or cold water) supplied to the shower device 6. For example, the flow path (water supply path) controlled by the water volume control unit 105b is connected to the flow path (water supply path) controlled by the discharge / stop control units 60a to 60c.

[0109] The bathtub water temperature control unit 106 functions as a water temperature control means that controls the temperature of the hot water (water) supplied to the bathtub 4. The bathtub water temperature control unit 106 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. The bathtub water temperature control unit 106 controls the temperature of the hot water (water) supplied to the bathtub 4 in accordance with instructions from the control unit 100. For example, the bathtub water temperature control unit 106 has a valve (temperature control valve) for adjusting the temperature of the hot water (water) supplied to the bathtub 4.

[0110] The shoulder / waist bath control unit 107 functions as a water temperature control means that controls the temperature of the hot water (water) supplied to the shoulder bath outlet and the waist bath outlet provided in the bathtub 4. The shoulder / waist bath control unit 107 is connected to the control unit 100 so that it can send and receive signals (information) with the control unit 100. The shoulder / waist bath control unit 107 controls the temperature of the hot water (water) supplied to at least one of the shoulder bath outlet and the waist bath outlet in response to instructions from the control unit 100. For example, the shoulder / waist bath control unit 107 has a valve (temperature control valve) for adjusting the temperature of the hot water (water) supplied to the shoulder bath outlet and the waist bath outlet.

[0111] The air conditioner 108 has an air conditioning device that adjusts the air quality in a predetermined space. The air conditioner 108 has an air conditioning device that adjusts the air quality in the bathroom 2. The air conditioner 108 has an air conditioning device that adjusts the air quality in the dressing room 3. For example, the air conditioning device has a function to adjust at least one of temperature, humidity, and flow rate (airflow). The air conditioner 108 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. The air conditioner 108 may perform drive control of the air conditioning device in response to instructions from the control unit 100.

[0112] For example, the air conditioner 108 receives control instruction information from the control unit 100 and controls the air conditioner based on the received control instruction information. The air conditioner 108 performs drive control of the air conditioner based on the control instruction information. For example, the air conditioner 108 starts or stops the air conditioner based on the control instruction information. The air conditioner 108 may have various functions as long as they are functions that adjust the air condition of a predetermined space. For example, the air conditioner 108 may have a function (drying function) for drying laundry in the bathroom 2, so-called bathroom drying.

[0113] The ventilation fan 109 has a ventilation device that ventilates a predetermined space. The ventilation fan 109 has a ventilation device that ventilates the bathroom 2. The ventilation fan 109 has a ventilation device that ventilates the dressing room 3. The ventilation fan 109 is connected to the control unit 100 so that it can send and receive signals (information) to and from the control unit 100. The ventilation fan 109 may perform drive control of the ventilation device in response to instructions from the control unit 100.

[0114] For example, the ventilation fan 109 receives control instruction information from the control unit 100 and controls the ventilation system based on the received control instruction information. The ventilation fan 109 performs dimming control of the ventilation system based on the control instruction information. For example, the ventilation fan 109 starts or stops the ventilation system based on the control instruction information.

[0115] The above is merely an example, and the bathroom management system 1 can employ any device configuration as long as it can achieve the desired processing. In the bathroom management system 1, the air conditioner 108 may have all the functions to adjust the air quality of a given space, including ventilation. In this case, the air conditioner 108 and the ventilation fan 109 may be integrated. For example, if the air conditioner 108 has a ventilation function, the bathroom management system 1 does not need to have a ventilation fan 109.

[0116] Furthermore, for example, the bathroom management system 1 may have various sensors for collecting information about the space (wet area) including the bathroom 2 and the changing room 3. For example, the sensor unit 10 of the bathroom management system 1 may have a door sensor that detects the opening and closing of the door to the changing room 3, as an entry detection sensor for collecting information on users entering and leaving the changing room 3. For example, the bathroom management system 1 functions as a bathroom management system that provides services related to the management of the bathroom with the above configuration. Also, for example, the bathroom management system 1 functions as a bathroom monitoring system that provides services related to the monitoring of the bathroom with the above configuration.

[0117] <1-3. Examples of processing using radio wave sensors> From here, we will outline an example of processing using a radio wave sensor. The radio wave sensor 10a, which is a radio wave radar as described above, emits radio waves into the bathroom 2 and receives the reflected radio waves. In this way, by receiving the radio waves that have been reflected back by the radio wave sensor 10a, the bathroom management system 1 can detect the coordinates of the point from which the radio waves were reflected, the intensity of the reflected radio waves, and the velocity (Doppler velocity) of the radio waves in the direction of propagation of the point from which the radio waves were reflected. Therefore, the bathroom management system 1 can obtain coordinate information of the point cloud that reflected the radio waves, information on the intensity of the reflected waves from each point, and information on the movement velocity of each point from the detection signal from the radio wave sensor 10a.

[0118] For example, when a user is located (entered) inside bathroom 2 (also referred to as "user entry state"), radio waves reflected by an object (reflector) including the user are detected by the radio wave sensor 10a, and point cloud information representing the object (reflector) including the user is detected.

[0119] In the configuration shown in Figures 1 and 2, when user U is located inside bathroom 2 (user occupancy state), radio waves reflected by objects such as panels 2a to 2f, in addition to user U, are detected by the radio wave sensor 10a. As a result, when user U is located inside bathroom 2, the bathroom management system 1 acquires point cloud information representing users U as well as objects such as panels 2a to 2f.

[0120] On the other hand, for example, when no user is located (entered) in bathroom 2 (also called "user absent state"), radio waves reflected by objects (reflectors) that do not include the user are detected by the radio wave sensor 10a, and point cloud information representing objects (reflectors) that do not include the user, i.e., objects other than the user, is detected. In this way, when no user is located in bathroom 2 (user absent state), point cloud information representing objects that are not necessary for estimating the user's position or movement is detected.

[0121] In the configuration shown in Figures 1 and 2, when no user is present in the bathroom 2 (user absent state), radio waves reflected by objects other than the user, such as the components related to panels 2a to 2f, are detected by the radio wave sensor 10a. As a result, the bathroom management system 1 can acquire point cloud information representing objects other than the user, such as the components related to panels 2a to 2f, when no user is present in the bathroom 2.

[0122] Here, the radio waves reflected from the configuration of panels 2a to 2f of bathroom 2 may affect the estimation of changes in the state of the space within bathroom 2, such as the estimation of the user's position and movement within bathroom 2. Panels 2a to 2f of bathroom 2 are made of panel-like materials such as PVC (polyvinyl chloride), resin, or hard plastic. In addition, for example, a metal plate may be provided on the back surface of panels 2a to 2f. In this case, if a metal plate is placed on the back surface of panels 2a to 2f, the metal plate constitutes a radio wave reflection area, and the intensity of the radio waves reflected from the configuration of panels 2a to 2f of bathroom 2 increases, which may affect the estimation of changes in the state of the space within bathroom 2.

[0123] Furthermore, even if no metal plates are placed on the back surfaces of panels 2a to 2f, water droplets may adhere to the surfaces of panels 2a to 2f due to the user's use or cleaning of the shower equipment 6. In such cases, the areas of the surface of panels 2a to 2f where water droplets are present (water droplet-adhered areas) constitute radio wave reflection areas, and the intensity of radio waves reflected from the configuration of panels 2a to 2f in the bathroom 2 increases, which may affect the estimation of changes in the state of the space within the bathroom 2.

[0124] Thus, if there are radio wave reflection regions where the intensity of reflected radio waves can be strong, it may be difficult to accurately estimate changes in the state of the space within the bathroom 2. Therefore, the bathroom management system 1 estimates changes in the state of the space within the bathroom 2 by excluding such radio wave reflection regions. For example, the bathroom management system 1 excludes wall surfaces such as panels 2a to 2f from the detection range because the reflection intensity is high there. Note that exclusion is not limited to excluding from the data when the bathroom management system 1 performs estimation processing, but may be in any manner as long as the desired processing can be performed, for example, by excluding from the output data output by the radio wave sensor 10a.

[0125] For example, the bathroom management system 1 acquires detection information (also called "first detection information") from reflections from objects other than the user (reflective objects), such as radio wave reflection areas, when no user is present. For example, by performing detection when no user is present, the bathroom management system 1 acquires point cloud information (also called "first point cloud information") detected from reflections from objects other than the user (reflective objects), such as radio wave reflection areas, as first detection information.

[0126] The bathroom management system 1 then acquires detection information (also called "second detection information") based on the reflection of an object (reflective object) including the user when the user is inside the bathroom. For example, by performing detection when the user is inside the bathroom, the bathroom management system 1 acquires point cloud information (also called "second point cloud information") detected by the reflection from an object (reflective object) including the user as second detection information.

[0127] The bathroom management system 1 then uses the first detection information and the second detection information to generate detection information (also called "third detection information") from which the influence of the radio wave reflection region has been removed. For example, the bathroom management system 1 generates third detection information (also called "third point cloud information") from which the influence of the radio wave reflection region has been removed, based on a comparison between the second point cloud information (for example, point cloud information as shown in Figure 6) and the first point cloud information. For example, the bathroom management system 1 generates third point cloud information by deriving the difference between the second point cloud information and the first point cloud information.

[0128] The bathroom management system 1 then uses the third detection information to estimate changes in the space within the bathroom 2. For example, the bathroom management system 1 uses the third point cloud information to estimate changes in the space within the bathroom 2. The bathroom management system 1 may further remove information that could be noise (such as dynamic noise) from the third detection information. For example, the bathroom management system 1 may generate detection information (also called "fourth detection information") from which noise has been further removed from the third detection information. In this case, the bathroom management system 1 uses the fourth detection information to estimate changes in the space within the bathroom 2. Dynamic noise may include, for example, radio waves reflected from objects that are not stationary due to vibration (such as a washing machine).

[0129] For example, the bathroom management system 1 may further process the third point cloud information to remove dynamic noise and other unwanted noise. As a result, the bathroom management system 1 generates point cloud information (also called "fourth point cloud information") from which various influences (noise) other than the influence of the radio wave reflection region have been removed, as fourth detection information. In this case, the bathroom management system 1 uses the fourth point cloud information (for example, the point cloud information shown in Figure 9) to estimate the state changes in the space within the bathroom 2.

[0130] <1-4. Processing Examples> From here, based on the above-mentioned premise, an example of the processing performed by the bathroom management system 1 will be explained using Figure 5. Figure 5 is a flowchart showing an example of the procedure for processing performed by the bathroom management system. For example, Figure 5 is a flowchart showing an example of the state estimation processing performed by the bathroom management system 1 according to the embodiment. Although the bathroom management system 1 is described as the processing unit, each processing may be performed by any of the devices, such as the sensor unit 10 (radio wave sensor 10a, etc.) or the control unit 100, depending on the device configuration included in the bathroom management system 1.

[0131] The bathroom management system 1 emits radar and derives the distance to each reflection point, azimuth angle, elevation angle, radio wave intensity, and Doppler velocity from the received signal (step S101). For example, the bathroom management system 1 emits radar from the radio wave sensor 10a, and based on the received signal from the radio wave sensor 10a, the control unit 100 derives the distance to each reflection point, azimuth angle, elevation angle, radio wave intensity, and Doppler velocity to acquire second detection information.

[0132] For example, the bathroom management system 1 derives the distance, azimuth angle, elevation angle, radio wave intensity, and Doppler velocity to each reflection point based on detection of the user's presence in the bathroom, and acquires point cloud information (second point cloud information) from the object (reflector) including the user as second detection information. For example, the bathroom management system 1 acquires point cloud information (second point cloud information) including the user, as shown in Figure 6. Figure 6 is a diagram showing an example of a point cloud detected by the radio wave sensor of the bathroom management system. Figure 6 shows an example of a point cloud (point cloud data) when the user is located inside the bathroom 2.

[0133] Bathroom management system 1 excludes walls and corners with high reflectivity from its detection range when there are no moving objects (step S102). For example, bathroom management system 1 excludes walls and corners with high reflectivity from its detection range based on detection when no user is present in bathroom 2.

[0134] For example, the bathroom management system 1 acquires first detection information obtained by detection in a user-absent state where the user is not located inside the bathroom 2. For example, the bathroom management system 1 acquires first point cloud information as first detection information from the data storage unit 101. For example, the bathroom management system 1 may perform detection in a user-absent state before processing in step S101, derive the distance to each reflection point, azimuth angle, elevation angle, radio wave intensity, and Doppler velocity based on the detection in the user-absent state, and acquire point cloud information (first point cloud information) from objects (reflectors) that do not include the user.

[0135] For example, the bathroom management system 1 uses the second detection information and the first detection information to generate third detection information by removing the influence (noise) of reflections from walls and corners with high reflectivity from the second detection information. For example, the bathroom management system 1 uses the second point cloud information and the first point cloud information to generate point cloud information (third point cloud information) by removing the point cloud based on reflections from walls and corners with high reflectivity from the second point cloud information. As a result, the bathroom management system 1 excludes radio wave reflection areas such as walls and corners with high reflectivity other than those of the user from its detection range.

[0136] The bathroom management system 1 then executes the processes in steps S103 and S104. Steps S103 and S104 are merely step numbers for the purpose of explaining the process and may be performed in any order. For example, step S104 may be performed before step S103.

[0137] The bathroom management system 1 removes low-intensity noise from reflection points based on radio wave intensity (step S103). For example, the bathroom management system 1 automatically adjusts the threshold through CFAR (Constant False Alarm Rate) detection processing and removes information from reflection points with intensity below that threshold as noise.

[0138] Here, the processing overview of step S103 will be explained using Figure 7. Figure 7 is a diagram showing an example of the intensity distribution of radio waves received by the radio wave sensor of the bathroom management system. Figure 7 is a schematic graph showing the intensity of radio waves reflected from each point on the horizontal axis and the frequency (number of points) of the points showing that intensity on the vertical axis. For example, if there are no metal plates placed on the back surfaces of panels 2a to 2f, or if there are no water droplet adhesion areas on the surfaces of panels 2a to 2f, the intensity of the reflected waves irradiated from the radio wave sensor 10a and reflected by panels 2a to 2f will be low. In such cases, the influence of reflection (noise) from panels 2a to 2f may be included in the third point group information.

[0139] Furthermore, since much of the radio waves emitted from the radio wave sensor 10a are reflected by panels 2a to 2f, the frequency (number of points) of such radio waves increases. As a result, the graph in Figure 7 shows one peak in the region where the intensity of the reflected waves is low. On the other hand, the reflected waves reflected by users entering the bathroom 2 are relatively high in intensity, so the graph in Figure 7 shows another peak in the region where the intensity of the reflected waves is high, due to the reflected waves reflected by the user. Of the received reflected waves, radio waves below a predetermined intensity threshold (corresponding to the threshold in Figure 7) are determined to be noise and are removed from the data (point cloud information, etc.) used for processing. In this way, the bathroom management system 1 can appropriately remove noise, even if the reflected waves have low intensity and were not excluded in the processing of step S102.

[0140] Furthermore, a predetermined intensity threshold (corresponding to the threshold in Figure 7) for determining whether the received radio waves are noise can be changed based on the detected reflected waves. In the bathroom management system 1, the predetermined intensity threshold is determined using the CFAR method. Generally, setting the predetermined intensity threshold lower increases the probability of detecting the target being detected, but also increases the probability of false alarms (detection). On the other hand, setting the predetermined intensity threshold higher can lower the probability of false alarms, but it decreases the probability of detecting the target. Thus, the probability of detecting the target and the probability of false alarms change depending on the setting of the predetermined intensity threshold, resulting in a trade-off relationship. The CFAR method is generally known as a method for setting a predetermined intensity threshold based on the intensity distribution of the received reflected waves so that the probability of false alarms remains constant.

[0141] Furthermore, the bathroom management system 1 removes static noise from the reflection point (step S104). For example, the bathroom management system 1 removes noise with a low Doppler velocity from the reflection point.

[0142] The processing overview for this point will be explained using Figure 8. Figure 8 is a diagram showing an example of the distribution of Doppler velocity of radio waves received by the radio wave sensor of the bathroom management system. Figure 8 is a schematic graph showing the Doppler velocity of each point that reflects the radio wave on the horizontal axis and the frequency (number of points) of the points showing that velocity on the vertical axis. Here, the Doppler velocity obtained from the reflected wave that is irradiated from the radio wave sensor 10a and reflected by stationary objects such as panels 2a to 2f is almost zero.

[0143] Furthermore, since much of the radio waves emitted from the radio wave sensor 10a are reflected by panels 2a to 2f, the frequency (number of points) of such radio waves increases. As a result, the graph in Figure 8 shows a single peak near zero Doppler velocity. On the other hand, since users who enter the bathroom 2 are moving, the reflected waves reflected by the users are distributed from the region where the Doppler velocity is negative (towards the radio wave sensor 10a) to the region where the Doppler velocity is positive (away from the radio wave sensor 10a). Of the received reflected waves, radio waves whose absolute value of Doppler velocity is below a predetermined velocity threshold (for example, corresponding to the range between the dashed lines in Figure 8) are determined to be noise and are removed from the data (point cloud information, etc.) used for processing.

[0144] The bathroom management system 1 acquires point cloud information indicating users in the bathroom 2 by multiplying the information on the intensity of radio waves reflected from each point and the information on the velocity of each point obtained in steps S103 and S104 (step S105). For example, the bathroom management system 1 generates point cloud information indicating users (fourth point cloud information) that removes various influences other than the radio wave reflection region by removing data that has been determined to be noise based on the information on the intensity of radio waves reflected from each point and the information on the velocity of each point.

[0145] This allows the bathroom management system 1 to detect users more accurately. Figure 9 shows an example of users detected as a point cloud in this way. Figure 9 shows an example of a point cloud detected by the radio wave sensor of the bathroom management system.

[0146] The bathroom management system 1 estimates a person's position from the noise-removed data (step S106). For example, as shown in Figure 9, the bathroom management system 1 estimates the user's position from point cloud information corresponding to the user (fourth point cloud information) from which various influences other than the radio wave reflection region have been removed. For example, the bathroom management system 1 estimates the user's position based on the relationship between the space of the bathroom 2 and its coordinates. The bathroom management system 1 obtains information on the user's position within the bathroom 2 by calculating the centroid position of the point cloud reflecting radio waves.

[0147] Note that the processing flow shown in Figure 5 is merely an example, and the processing flow executed by the bathroom management system 1 is not limited to the processing flow shown in Figure 5, but can be any processing flow as long as the desired processing can be executed. For example, the bathroom management system 1 does not have to execute at least one of steps S103 and S104. For example, the bathroom management system 1 does not have to execute step S104.

[0148] Furthermore, the bathroom management system 1 may estimate various information using fourth detection information, such as point cloud information (fourth point cloud information) that indicates the user. The bathroom management system 1 may also estimate the user's height, posture, etc., based on the height of the highest point in the point cloud. The bathroom management system 1 may also acquire information such as the user's height and posture, based on the height of the highest point in the point cloud.

[0149] Furthermore, the bathroom management system 1 may estimate the movement of a person's body or their posture when moving from the water discharge area of ​​the shower device 6 installed in the bathroom 2 to the bathtub 4 installed in the bathroom 2. For example, the bathroom management system 1 may estimate information about the user's movement based on changes in fourth detection information, such as point cloud information (fourth point cloud information) indicating the user. For example, the bathroom management system 1 may estimate at least one of the user's body movement or posture when moving based on changes in fourth detection information, such as point cloud information (fourth point cloud information) indicating the user, over time.

[0150] For example, the bathroom management system 1 may estimate the user's physical movement from the water discharge area of ​​the shower device 6 to the bathtub 4 based on the time-series change from the 4th point cloud information at the first time when the user is located in the water discharge area of ​​the shower device 6 to the 4th point cloud information at the second time when the user is located in the bathtub 4. For example, the bathroom management system 1 may estimate the user's posture as they move from the water discharge area of ​​the shower device 6 to the bathtub 4 based on the time-series change from the 4th point cloud information at the first time when the user is located in the water discharge area of ​​the shower device 6 to the 4th point cloud information at the second time when the user is located in the bathtub 4. Note that the above is merely an example, and the bathroom management system 1 may use various information to estimate physical movement or posture as they move from the water discharge area of ​​the shower device 6 installed in the bathroom 2 to the bathtub 4 installed in the bathroom 2.

[0151] Furthermore, the bathroom management system 1 may estimate the user's actions within the water discharge area of ​​the shower device 6 installed in the bathroom 2. For example, the bathroom management system 1 may estimate information regarding the user's actions based on changes in fourth detection information, such as point cloud information (fourth point cloud information) indicating the user. For example, the bathroom management system 1 may estimate the user's actions based on changes in fourth detection information, such as point cloud information (fourth point cloud information) indicating the user, over time.

[0152] For example, the bathroom management system 1 may estimate the user's actions within the water discharge area of ​​the shower device 6 based on the time-series change from the 4th point cloud information at the first time the user is located in the water discharge area of ​​the shower device 6 to the 4th point cloud information at the second time the user is located in the water discharge area of ​​the shower device 6. However, the above is merely an example, and the bathroom management system 1 may use various information to estimate the user's actions within the water discharge area of ​​the shower device 6 installed in the bathroom 2. For example, if multiple radio wave sensors 10a are provided, the bathroom management system 1 may use information obtained from the detection of radio wave sensors 10a placed near the water discharge area of ​​the shower device 6 to estimate the user's actions within the water discharge area of ​​the shower device 6.

[0153] Furthermore, the bathroom management system 1 may estimate the breathing state of a user located in the bathtub 4 installed in the bathroom 2. For example, the bathroom management system 1 may estimate information regarding the user's breathing based on changes in fourth detection information, such as point cloud information (fourth point cloud information) indicating the user. For example, the bathroom management system 1 may estimate the user's breathing state based on changes in fourth detection information, such as point cloud information (fourth point cloud information) indicating the user, over time.

[0154] For example, the bathroom management system 1 may estimate the user's breathing state in the bathtub 4 based on the time-series change from the 4th point cloud information at the first hour when the user is in the bathtub 4 to the 4th point cloud information at the second hour when the user is in the bathtub 4. However, the above is merely an example, and the bathroom management system 1 may use various information to estimate the breathing state of a user located in the bathtub 4 installed in the bathroom 2. For example, if multiple radio wave sensors 10a are provided, the bathroom management system 1 may use information obtained from the detection of radio wave sensors 10a (for example, radio wave sensors 10a2 and 10a3 in Figure 12) located near the end portion 43 which functions as a pillow to estimate the breathing state of a user located in the bathtub 4.

[0155] <1-5. Examples of antenna placement for radio wave sensors> Here, we will describe examples of antenna placement for radio wave sensors. For example, the placement shown in Figures 10 and 11 may be used. Figures 10 and 11 are diagrams showing examples of antenna placement for radio wave sensors. Specifically, Figure 10 shows an example of the orientation of the antenna for a radio wave sensor when viewed from above in the bathroom. Figure 11 shows an example of the orientation of the antenna for a radio wave sensor when viewed from the side in the bathroom. Note that explanations of points similar to those described above will be omitted as appropriate.

[0156] Figures 10 and 11 schematically show the configuration of the radio wave sensor 10a. In addition to the housing 11 and antenna 12, the radio wave sensor 10a also has various other components necessary to function as a radio wave radar.

[0157] As shown in Figures 10 and 11, the radio wave sensor 10a is positioned so that the antenna surface 121 of the antenna 12, which is located inside the housing 11, intersects with the surface of the panel 2a on which the radio wave sensor 10a is installed. In this way, the plane direction of the antenna surface 121 of the antenna 12 of the radio wave sensor 10a intersects with the surface of the panel on which the radio wave sensor 10a is installed. The radio wave sensor 10a is positioned so that the antenna surface 121 of the antenna 12, which is located inside the housing 11, faces the center of the bathroom 2. In this way, the antenna surface 121 of the antenna 12 of the radio wave sensor 10a is positioned to face the center of the bathroom 2.

[0158] The region AR11 shown in Figures 10 and 11 shows an example of the range in which the radio wave sensor 10a receives reflected waves. The radio wave sensor 10a emits radio waves at a predetermined angle and receives reflections from panels 2a to 2f of the bathroom 2. As shown in Figures 10 and 11, by positioning the antenna surface 121 of the antenna 12 so that it faces the center of the bathroom 2, depending on the placement position of the radio wave sensor 10a, it becomes unnecessary to place the radio wave sensor 10a in the center of the bathroom 2, thereby improving the flexibility of the placement of the radio wave sensor 10a.

[0159] <1-6. Other Configuration Examples of Bathroom Management Systems> The configuration and processing described above are merely examples of bathroom management systems; bathroom management systems can have various configurations and perform various processes. Several examples are provided below.

[0160] As described above, the arrangement of the radio wave sensors 10a shown in Figure 3, that is, the arrangement of the sensor devices of the sensor unit 10, is just one example, and the bathroom management system may place the sensor devices of the sensor unit 10 at any location. The sensor unit 10 may have multiple radio wave sensors 10a.

[0161] For example, the sensor unit 10 may have a plurality of radio wave sensors 10a, including a first radio wave sensor 10a that detects a first space including a bathtub 4 installed in the bathroom 2, and a second radio wave sensor 10a that detects a second space including the water discharge area of ​​a shower device 6 installed in the bathroom 2. In this case, the output data of the sensor unit 10 includes first output data from the first radio wave sensor 10a and second output data from the second radio wave sensor 10a.

[0162] Furthermore, the bathroom management system may have three or more radio wave sensors 10a. An example of this case will be explained using Figure 12. Figure 12 is a diagram showing another example of the configuration of the bathroom management system. The bathroom management system 1A in Figure 12 has radio wave sensors 10a1, 10a2, and 10a3. When describing radio wave sensors 10a1, 10a2, and 10a3 without making a particular distinction, radio wave sensor 10a will be referred to. Thus, the bathroom management system 1A has three radio wave sensors 10a, each positioned at a different location.

[0163] Each of the radio wave sensors 10a1, 10a2, and 10a3 is positioned higher than the upper end of the bathtub 4 installed in the bathroom 2. In Figure 12, radio wave sensor 10a1 is positioned in the same location as radio wave sensor 10a in Figure 3. Radio wave sensor 10a2 is positioned along panel 2b near the end 43 that functions as the pillow of the bathtub 4. Radio wave sensor 10a2 is also positioned along panel 2c near the pillow and the end 43 that functions as the pillow of the bathtub 4. By positioning radio wave sensor 10a near the end 43 that functions as the pillow of the bathtub 4 in this way, the accuracy of detecting the breathing of a user while they are in the bathtub 4 and bathing can be improved.

[0164] <1-7. Other processing examples> Bathroom management system 1 may perform various processes, not limited to those described above. For example, bathroom management system 1 may provide new value by performing various services using various information, such as the information obtained through the processes described above. The processes performed by bathroom management system 1 will be described below in more detail. Points that are the same as those described above will be omitted as appropriate.

[0165] <1-7-1. Examples of lighting control> First, with reference to Figures 13 and 14, the spatial divisions of bathroom 2, where lighting control is performed by the bathroom management system 1, will be explained. First, the spatial divisions of bathroom 2 as seen from the top will be explained. Figure 13 is a top view showing an example of spatial division. Figure 13 shows a plan view division of an example of a bathroom to which the bathroom management system shown in Figure 1 is applied, and a dressing room adjacent to the bathroom. With lighting control by the bathroom management system 1, the bathroom and the space adjacent to the bathroom are divided as follows: the bathtub space where the bathtub is located (Figure 13(1)), the water outlet space where the water outlet device is located (Figure 13(2)), and the adjacent space near the bathroom entrance (Figure 13(3)). The bathroom space (bathroom 2) includes the bathtub space and the water outlet space. Note that the bathroom space refers to the bathroom.

[0166] Next, we will explain the spatial divisions of bathroom 2 as seen from the side. Figure 14 is a side view showing an example of spatial division. Figure 14 shows an example of the division in bathroom 2 to which the bathroom management system shown in Figure 2 is applied. The dotted lines indicate the boundaries of each space. With lighting control by the bathroom management system 1, bathroom 2 is divided horizontally into the bathtub space where the bathtub is located and the water outlet space where the water outlet device is located. In addition, bathroom 2 is divided vertically into the upper space, which is the space above the reference point, and the lower space, which is the space below the reference point.

[0167] In other words, since bathroom 2 is divided into two spaces in the horizontal and vertical directions, it has a total of four spaces: a space that is both a bathtub space and an upper space, a space that is both a bathtub space and a lower space, a space that is both a water outlet space and an upper space, and a space that is both a water outlet space and a lower space.

[0168] Here, examples of reference points include the vertical midpoint of bathroom 2, the top surface of bathtub 4, bathroom counter 5, hand shower 6b, spout 6c, lower end of mirror 7, vertical midpoint of mirror 7, upper end of mirror 7, and shower head holder 8b. Note that the examples of spaces shown in Figure 14 are merely examples, and the upper and lower spaces may be distinguished by different reference points in the bathtub space and the water outlet space. For example, in the bathtub space where the user leans against bathtub 4, the spout 6c is used as the reference point. Also, in the water outlet space where the user washes their body using the shower, the vertical midpoint of mirror 7 is used as the reference point.

[0169] In the bathroom 2, which is divided as described above, the bathroom management system 1 can perform lighting control processing based on the location of the user in bathroom 2. For example, the bathroom management system 1 detects the location of the user in bathroom 2 and controls the light characteristics of the lighting 104. Light characteristics are a collection of elements that constitute light, including luminance, illuminance, color temperature, and color. Note that color can be read as saturation.

[0170] For example, the bathroom management system 1 detects the location of a user within the bathroom based on the detection results of the radio wave sensor 10a. For example, the bathroom management system 1 detects the horizontal and vertical location of a user within the bathroom from the position of the point cloud indicating the reflector of radio waves detected by the radio wave sensor 10a.

[0171] The bathroom management system 1 controls the light characteristics of the lighting 104 based on the user's horizontal and vertical position within the bathroom. For example, the bathroom management system 1 controls the light characteristics of the lighting 104 so that the bathroom space becomes darker when the user is in the space below the bathtub.

[0172] <1-7-2. Example of Bathroom Management System Configuration> The configuration of the bathroom management system that performs the above-described processing will be explained. Note that explanations of points similar to those explained in Figures 3, 4, and 12 will be omitted as appropriate.

[0173] The sensor unit 10 detects information used by the bathroom management system 1 for lighting control. The sensor unit 10 also detects information used by the control unit 100A for lighting control. The radio wave sensor 10a of the sensor unit 10 is installed inside the bathroom 2 and functions as a detection means for detecting changes in the state inside the bathroom 2. Changes in the state inside the bathroom 2 include the location of the user inside the bathroom 2. For example, the radio wave sensor 10a of the sensor unit 10 detects the horizontal and vertical location of the user inside the bathroom 2.

[0174] When the radio wave sensor 10a is placed on the bathroom counter 5, it is positioned on the surface of the bathroom counter 5, away from the bathroom wall. An example of the configuration of a bathroom management system in which the radio wave sensor 10a is installed on the bathroom counter 5 will be explained using Figure 15. Figure 15 is a diagram showing an example of the configuration of a bathroom management system in which the radio wave sensor is installed on the bathroom counter. For example, as shown in Figure 15, the radio wave sensor 10a is placed on the edge of the bathroom counter 5. By placing the radio wave sensor 10a in this way, the space below the bathroom counter 5 is prevented from becoming a blind spot for the radio wave sensor 10a, and changes in the state of the space below the bathroom counter 5 in the bathroom can be detected.

[0175] Lighting fixture 104 functions as a lighting means for illuminating a predetermined space. Lighting fixture 104 is installed in a bathroom that has at least a water dispensing device. The water dispensing device is a shower device 6, a spout (faucet) 6c, etc. Lighting fixture 104 illuminates at least a part of the bathroom.

[0176] Lighting 104 has lighting devices that illuminate various places in the bathroom. Here, an example of lighting 104 installed in bathroom 2 will be described with reference to Figure 16. Figure 16 is a diagram showing an example of lighting installed in a bathroom, and is a view of bathroom 2 in Figure 1 from the side facing the entrance. For example, as shown in Figure 16, lighting 104 has ceiling lighting 104a installed on the ceiling. Ceiling lighting 104a includes bathroom lighting that illuminates the entire bathroom, as well as bathtub space lighting that illuminates the bathtub space and water outlet space lighting that illuminates the water outlet space. Lighting 104 also has wall lighting 104b installed on the walls that illuminate the area from the wall surface to the vicinity of the wall surface. Wall lighting 104b is installed on each wall in the bathroom. Although not shown in the diagram, wall lighting 104b may be set near the ceiling and near the bottom of the wall surface. Lighting 104 also has faucet lighting 104c installed on the faucet 6c that illuminates the area around the faucet 6c. Furthermore, the lighting 104 is installed on the bathroom counter 5 and includes a counter light 104d that illuminates the area around the bathroom counter 5.

[0177] The above-mentioned lighting is distinguished into first lighting and second lighting. First lighting is a lighting device installed on the vertically upper side of the bathroom and functions as first lighting means. Second lighting is lighting installed on the vertically lower side of the bathroom and functions as second lighting means. The above-mentioned reference point serves as the reference for the upper and lower directions. To explain using Figure 16 as an example, the vertical midpoint of bathroom 2 is the reference point, the ceiling lighting 104a and wall lighting 104b installed on the vertically upper side of bathroom 2 become first lighting, and the faucet lighting 104c and counter lighting 104d installed on the vertically lower side of bathroom 2 become second lighting.

[0178] Furthermore, the bathroom management system 1 may have a seating area 4a. The seating area 4a is a component provided on the wall side of the bathroom 2, on which a user can sit. The seating area 4a may be installed in contact with or integrated with the wall, or it may be installed without contact with the wall. An example of the configuration of the bathroom management system 1 having a seating area 4a will be explained using Figure 17. Figure 17 is a diagram showing an example of the configuration of a bathroom management system having a seating area. For example, as shown in the lower part of Figure 17, the seating area 4a is installed integrally with the wall of the bathroom 2. Note that the installation location of the seating area 4a in Figure 17 is merely an example, and the seating area 4a can be freely installed in a location within the bathroom 2 according to its purpose.

[0179] Next, an example of the seating portion 4a will be described with reference to Figure 18. Figure 18 is a diagram showing an example of the seating portion. For example, as shown in Figure 18, the seating portion 4a is a plate-shaped component installed integrally with the wall surface at a predetermined height in the bathroom 2, and is used when a user sits down to rest while bathing. Note that the shape of the seating portion 4a in Figure 18 is merely an example, and the seating portion 4a may be in various shapes depending on the purpose, such as a cube or rectangular prism, in addition to being plate-shaped.

[0180] The control unit 100A performs various processes in the same way as the control unit 100. The control unit 100A also performs risk notification processing. An example of the configuration of the control unit 100A will be explained with reference to Figure 19. Figure 19 is a block diagram showing an example of the configuration of the control unit. The control unit 100A shown in Figure 19 has a lighting control unit 112 in addition to the configuration of the control unit 100 shown in Figure 4. As shown in Figure 19, the control unit 100A includes a state estimation unit 110, a determination unit 111, and a lighting control unit 112. Note that the internal configuration of the control unit 100A is not limited to the configuration shown in Figure 19; other configurations are acceptable as long as they perform the desired information processing.

[0181] The lighting control unit 112 functions as a lighting control means for controlling the lighting 104 in the bathroom 2. The lighting control unit 112 controls one or more lighting devices of the lighting 104. The lighting control unit 113 can also control the light characteristics for each lighting device or for each type of lighting (e.g., first lighting, second lighting, etc.). The lighting control unit 112 controls the light characteristics of the lighting means based on the horizontal and vertical position of the user detected by the detection means. For example, the lighting control unit 112 controls the light characteristics of the lighting means so that they differ when the user is located in the bathtub space where the bathtub is provided in the bathroom compared to when the user is located in the water outlet space where the water outlet is provided in the bathroom. For example, when the user is located in the water outlet space, the lighting control unit 112 controls the lighting means so that at least one of the luminance, illuminance, color temperature, and color (saturation) of the water outlet space is higher compared to when the user is located in the bathtub space.

[0182] To give a specific example, when the user is in the bathtub area (Figure 13(1)), the lighting control unit 112 controls the light characteristics of the light fixture 104 to "illuminance: 40%, color temperature: incandescent color". On the other hand, when the user is in the water outlet area (Figure 13(2)), the lighting control unit 112 controls the light characteristics of the light fixture 104 to "illuminance: 70%, color temperature: daylight color".

[0183] Next, the control of lighting according to the user's position in the water discharge space will be explained. The lighting control unit 112 controls the lighting means so that at least one of the luminance, illuminance, color temperature, and color of the vertically lower space of the water discharge space is higher when the user is located in the vertically lower space of the water discharge space compared to when the user is located in the vertically upper space of the water discharge space.

[0184] Here, we will explain a specific example with reference to Figure 20. Figure 20 shows different postures of a user in the water outlet area when the bathroom management system according to the embodiment shown in Figure 2 is applied, as viewed from the side (towards the entrance) of bathroom 2. Figure 20(1) shows the user in a standing posture in the water outlet area. Figure 20(2) shows the user in a seated posture in the water outlet area.

[0185] For example, as shown in Figure 20(1), the lighting control unit 112 controls the light characteristics of the lighting 104 to be "illuminance: 80%, color temperature: daylight" when the user is located in the vertically upper space of the water outlet area, and as shown in Figure 20(2), the lighting control unit 112 controls the light characteristics of the lighting 104 to be "illuminance: 40%, color temperature: incandescent color" when the user is located vertically lower on the water outlet area.

[0186] Next, the control of lighting according to the user's position in the bathtub space will be explained. The lighting control unit 112 controls the lighting means so that at least one of the brightness, illuminance, color temperature, and color of the bathroom is lower when the user is located in the vertically lower space of the bathtub space compared to when the user is located in the vertically upper space of the bathtub space.

[0187] Here, we will explain a specific example with reference to Figure 21. Figure 21 shows different postures of a user using the bathtub 4 in a bathroom to which the bathroom management system according to the embodiment shown in Figure 2 is applied. Figure 21(1) shows the user in a standing position in the bathtub space. Figure 21(2) shows the user in a seated position in the bathtub space.

[0188] For example, as shown in Figure 21(1), the lighting control unit 112 controls the light characteristics of the lighting 104 to be "illuminance: 80%, color temperature: daylight" when the user is located in the vertically upper space of the bathtub space, and as shown in Figure 21(2), the lighting control unit 112 controls the light characteristics of the lighting 104 to be "illuminance: 40%, color temperature: incandescent color" when the user is located in the vertically lower side of the bathtub space.

[0189] The lighting control unit 112 can perform different controls on the first lighting fixture installed above the bathroom 2 and the second lighting fixture located below it. For example, the lighting control unit 112 controls at least one of the first light conditions for the first lighting means and the second light conditions for the second lighting means. Here, the first light conditions refer to the light characteristics of the first lighting means, and the second light conditions refer to the light characteristics of the second lighting means. To give a specific example, the lighting control unit 112 controls the light characteristics of the first lighting fixture, including the ceiling light 104a and wall light 6b in Figure 16, to be "illuminance: 40%, color temperature: incandescent color". The lighting control unit 112 also controls the light characteristics of the second lighting fixture, including the faucet light 104c and counter light 104d in Figure 16, to be "illuminance: 80%, color temperature: incandescent color".

[0190] The lighting control unit 112 controls the optical characteristics of the lighting means based on the detection that a user has sat on the seating area 4a. To give a specific example, as shown in Figure 18, when a user is sitting on the seating area 4a, the lighting control unit 112 controls the lighting 104 to brighten the space in which the seating area 4a is installed, because the point cloud indicating reflective objects detected by the radio wave sensor 10a is located above the seating area 4a.

[0191] The lighting control unit 112 controls the lighting means according to the user's state. The user's state includes a stationary state and a moving state. A "stationary state" is when the user is resting. A "moving state" is when the user is moving (not resting). The user's stationary state and moving state are determined by whether or not the user's travel distance over a predetermined period exceeds a threshold.

[0192] For example, if the user moves 1 meter or more per second, the user is determined to be in a moving state. On the other hand, if the user moves less than 1 meter per second, the user is determined to be in a stationary state. Note that the threshold values ​​used to determine the user's state may differ depending on whether the user is in the bathtub area or the water outlet area.

[0193] The lighting control unit 112 controls the lighting means in conjunction with the user's transition from a stationary state to a moving state, or from a moving state to a stationary state, within the user's bathroom. For example, when the user is located in the bathtub area of ​​the bathroom where the bathtub is provided and transitions to a moving state, the lighting control unit 112 controls the lighting means so that at least one of the brightness, illuminance, color temperature, and color of the bathroom increases.

[0194] To give a specific example, when a user transitions from a resting state in the bathtub (Figure 22(1)) to an exercise state such as stretching (Figure 22(2)), the lighting control unit 112 controls the illuminance of the light 104 to change from "40%" to "70%".

[0195] Conversely, for example, the lighting control unit 112 controls the lighting means so that at least one of the brightness, illuminance, color temperature, and color (saturation) of the bathroom decreases when the user is located in the bathtub space within the bathroom and transitions to a stationary state. To give a specific example, when the user is exercising in the bathtub, such as stretching (Figure 22(2)), and then finishes stretching (Figure 22(1)) and transitions from an exercise state to a stationary state, the lighting control unit 112 controls the illuminance of the light 104 to change from "70%" to "40%".

[0196] The above describes an example of controlling lighting according to the user's state in the bathtub space. However, the lighting control unit 112 can also control the lighting means in a similar manner when the user is in the water-discharge space, such that at least one of the brightness, illuminance, color temperature, and color of the bathroom increases when the user transitions to an active state. Furthermore, when the user in the water-discharge space transitions to a stationary state, the lighting means can be controlled to decrease at least one of the brightness, illuminance, color temperature, and color of the bathroom.

[0197] The lighting control unit 112 controls the lighting means based on the current time. For example, the lighting control unit 112 controls the lighting 104 to have light characteristics appropriate to the time of day. Specifically, the lighting control unit 112 controls the lighting 104 to have light characteristics of 80% illuminance and daylight color temperature during the time period from 6:00 to 10:00. Also, the lighting control unit 112 controls the lighting 104 to have light characteristics of 50% illuminance and incandescent color temperature during the time period from 18:00 to 3:00.

[0198] <1-7-3. Example of Lighting Control Processing Flow> Based on the above, an example of the flow of lighting control processing performed by the bathroom management system 1 will now be explained using Figure 23. Figure 23 is a flowchart showing an example of the procedure for processing performed by the bathroom management system. Although the bathroom management system 1 is described as the processing unit, each process may be performed by any of the devices, such as the sensor unit 10 (radio wave sensor 10a, etc.), the control unit 100, or the lighting 104, depending on the device configuration included in the bathroom management system 1.

[0199] The bathroom management system 1 detects the user's position in the horizontal and vertical directions (step S201). For example, the radio wave sensor 10a of the sensor unit 10 detects information about the position of a point cloud indicating a reflective object of radio waves irradiated into the bathroom. Subsequently, the bathroom management system 1 controls the light characteristics of the lighting 104 based on the detected position (step S202). For example, the lighting control unit 112 controls the bathroom lighting 104 to a dim setting when the user's position is in the space below the bathtub.

[0200] As described above, the bathroom management system 1 can achieve precise lighting control and create a sense of luxury by controlling lighting according to the user's horizontal and vertical position in each space. In addition, by using both horizontal and vertical positions, it can detect pre-movement behaviors such as standing up and proactively control the lighting as needed by the user. As a result, the bathroom management system 1 can create a comfortable bathroom space.

[0201] Further effects and modifications can be readily derived by those skilled in the art. Therefore, broader aspects of the present invention are not limited to the specific details and representative embodiments expressed and described above. Accordingly, various modifications are possible without departing from the spirit or scope of the overall concept of the invention as defined by the appended claims and their equivalents.

[0202] The embodiments and modifications described above may also have the following configurations, but are not limited to them. (1) A lighting means provided in a bathroom having at least a water dispensing device and illuminating at least a part of the bathroom, A detection means for detecting the horizontal and vertical position of the user within the bathroom, A lighting control means controls the optical characteristics of the lighting means based on the location detected by the detection means, A bathroom management system characterized by having the following features. (2) The aforementioned lighting control means is The optical characteristics of the lighting means are controlled to be different when the user is located in the bathtub space where the bathtub is provided within the bathroom, and when the user is located in the water discharge space where the water discharge means is provided within the bathroom. The bathroom management system according to (1), characterized in that (3) The aforementioned lighting control means is When the user is located in the vertically lower space above the water discharge space, compared to when the user is located in the vertically upper space above the water discharge space, the lighting means is controlled such that at least one of the brightness, illuminance, color temperature, and color of the vertically lower space above the water discharge space is higher. A bathroom management system according to (1) or (2), characterized in that it is the same as described in (1) or (2). (4) The aforementioned lighting control means is When the user is located in the vertically lower space above the bathtub space compared to when the user is located in the vertically upper space above the bathtub space, the lighting means is controlled so that at least one of the brightness, illuminance, color temperature, and color of the bathroom is lower. The bathroom management system described in (1) to (3), characterized by the above. (5) The bathroom further comprises a seating area provided on the wall side of the bathroom, The aforementioned lighting control means is The optical characteristics of the lighting means are controlled based on the detection that the user has sat on the seat. The bathroom management system described in (1) to (4), characterized by the above. (6) The aforementioned lighting means is The bathroom comprises a first lighting means installed vertically upward in the bathroom and a second lighting means installed vertically downward in the bathroom. The aforementioned lighting control means is Controlling at least one of the first light condition in the first illumination means and the second light condition in the second illumination means. A bathroom management system according to any one of (1) to (5), characterized by the above. (7) The aforementioned lighting control means is The lighting means is controlled in conjunction with the user's transition from a stationary state to a moving state, or from a moving state to a stationary state, within the bathroom. The bathroom management system according to (1) to (6), characterized by the above. (8) The aforementioned lighting control means is When the user is positioned in the bathtub area of ​​the bathroom where the bathtub is provided and transitions to the stationary state, the lighting means is controlled so that at least one of the brightness, illuminance, color temperature, and color of the bathroom decreases. A bathroom management system as described in (1) to (7), characterized by the above. (9) The bathroom management system according to (1) to (8), characterized in that the lighting control means controls the lighting means based on the current time. (10) The aforementioned detection means is The bathroom, which is formed by multiple panels, is equipped with a radio wave sensor that detects changes in the state of the bathroom, The system further includes a state estimation unit that estimates changes in the state of the space within the bathroom, excluding the radio wave reflection region including the surface of the panel. The bathroom management system described in (1) to (9), characterized by the above. [Explanation of Symbols]

[0203] 1. Bathroom Management System 2. Bathroom 2a~2d Side Panels 2e Floor Panel 2F Ceiling Panel 3. Changing room (adjacent room) 4 Bathtub 4a Seating area 5. Bathroom counter 6. Shower equipment 6a Overhead shower (OH) 6b Hand shower (HS) 6c Spout (Faucet) 7 mirror 8 shower bars 8a Bar member (bar-shaped member) 8b Head holding section 9 Mike 10 Sensor section 10a Radio wave sensor 11 cabinets 12 antennas 100 Control Unit (Control Device) 101 Data Storage Unit 102 Input section 103 Hochi Department 104 Lighting 104a Ceiling lighting 104b Wall lighting 104c Faucet Lighting 104d Counter Lighting 105a Water temperature control unit 105b Water volume control unit 106 Bathtub water temperature control unit 107 Shoulder and lower back bath control unit 108 Air conditioning 109 Ventilation fan 110 State Estimation Unit 111 Judgment section 112 Lighting Control Unit

Claims

1. A lighting means provided in a bathroom having at least a water dispensing device and illuminating at least a part of the bathroom, A detection means for detecting the horizontal and vertical position of the user within the bathroom, A lighting control means controls the optical characteristics of the lighting means based on the location detected by the detection means, A bathroom management system characterized by having the following features.

2. The aforementioned lighting control means is The optical characteristics of the lighting means are controlled to be different when the user is located in the bathtub space where the bathtub is provided within the bathroom, and when the user is located in the water discharge space where the water discharge means is provided within the bathroom. The bathroom management system according to feature 1.

3. The aforementioned lighting control means is When the user is located in the vertically lower space above the water discharge space, compared to when the user is located in the vertically upper space above the water discharge space, the lighting means is controlled such that at least one of the brightness, illuminance, color temperature, and color of the vertically lower space above the water discharge space is higher. The bathroom management system according to claim 2, characterized in that it is as described above.

4. The aforementioned lighting control means is When the user is located in the vertically lower space above the bathtub space compared to when the user is located in the vertically upper space above the bathtub space, the lighting means is controlled so that at least one of the brightness, illuminance, color temperature, and color of the bathroom is lower. The bathroom management system according to claim 2, characterized in that it is as described above.

5. The bathroom further comprises a seating area provided on the wall side of the bathroom, The aforementioned lighting control means is The optical characteristics of the lighting means are controlled based on the detection that the user has sat on the seat. The bathroom management system according to feature 1.

6. The aforementioned lighting means is The bathroom comprises a first lighting means installed vertically upward in the bathroom and a second lighting means installed vertically downward in the bathroom. The aforementioned lighting control means is Controlling at least one of the first light conditions in the first illumination means and the second light conditions in the second illumination means. A bathroom management system according to any one of claims 1 to 5.

7. The aforementioned lighting control means is The lighting means is controlled in conjunction with the user's transition from a stationary state to a moving state, or from a moving state to a stationary state, within the bathroom. The bathroom management system according to feature 1.

8. The aforementioned lighting control means is When the user is positioned in the bathtub area of ​​the bathroom where the bathtub is provided and transitions to the stationary state, the lighting means is controlled so that at least one of the brightness, illuminance, color temperature, and color of the bathroom decreases. The bathroom management system according to feature 7.

9. The bathroom management system according to claim 1, characterized in that the lighting control means controls the lighting means based on the current time.

10. The aforementioned detection means is The bathroom, which is formed by multiple panels, is equipped with a radio wave sensor that detects changes in the state of the bathroom, The system further includes a state estimation unit that estimates changes in the state of the space within the bathroom, excluding the radio wave reflection region including the surface of the panel. The bathroom management system according to feature 1.

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