JP7684066B2 - Communication control system, communication system, and hot water supply system - Google Patents

Description

The present invention generally relates to a communication control system, a communication system, and a hot water supply system. More specifically, the present invention relates to a communication control system, a communication system, and a hot water supply system that wirelessly connect to an information terminal.

Patent Document 1 discloses a health management system that includes a bather determination device. This bather determination device is equipped with a weight sensor at the base of the bathtub, which measures the weight of the bather before and during bathing, and measures the bather's weight from the difference. The bather determination device also has a water level sensor that detects the difference in water level before and during bathing. The device then measures the body fat percentage based on the change in water level during bathing, the measured weight, and information about the bather.

JP 2005-287591 A

Incidentally, devices for use in bathrooms that are equipped with a communication unit that can wirelessly connect to an information terminal are becoming popular. The communication unit automatically connects to the information terminal when the owner of the information terminal (hereinafter, the user) simply approaches the bathroom, which creates the problem that the communication unit wirelessly connects to the information terminal at a time unintended by the user.

The object of the present invention is to provide a communication control system, a communication system, and a hot water supply system that prevent a communication unit from wirelessly connecting to an information terminal at a time not intended by the user.

The communication control system according to the invention of claim 1 includes a storage unit, a communication unit, a change value calculation unit, an identification unit, and a judgment unit. The storage unit associates a water level rise value, which is the value by which the water level in the bathtub rises when the user takes a bath, with an information terminal owned by the user and stores the water level rise value in advance as registered data. The communication unit receives a signal from the information terminal as a received signal. The change value calculation unit acquires data on the water level in the bathtub and calculates the amount of change in the water level as a change value. The identification unit compares the change value with the registered data and identifies the information terminal associated with the registered data corresponding to the change value as a specific information terminal. The judgment unit determines whether the specific radio wave strength satisfies a radio wave strength condition based on a specific radio wave strength, which is the radio wave strength of the received signal received from the specific information terminal. If the specific radio wave strength satisfies the radio wave strength condition, the communication unit wirelessly connects to the specific information terminal.

In the communication control system according to the invention of claim 2, in the communication control system according to the invention of claim 1, the number of users is multiple. The storage unit links the water level rise value corresponding to each of the multiple users to the information terminal owned by each of the multiple users and stores it in advance as the registered data. The identification unit compares the change value with the registered data, and identifies, among the multiple information terminals, the information terminal linked to the registered data corresponding to the change value as the specific information terminal.

In the communication control system according to the invention of claim 3, in the communication control system according to the invention of claim 2, the radio wave strength condition includes that the specific radio wave strength is the highest among the radio wave strengths of the received signals received from each of the multiple information terminals.

In the communication control system according to the invention of claim 4, in the communication control system according to any one of the inventions of claims 1 to 3, the radio wave strength condition includes the specific radio wave strength being equal to or greater than a threshold value.

In the communication control system according to the invention of claim 5, the communication unit in the communication control system according to any one of the inventions of claims 1 to 4 receives sound data from the specific information terminal.

The communication control system according to claim 6 is the communication control system according to claim 5, further comprising a sound output unit that outputs the sound data.

The communication system according to the invention of claim 7 comprises a communication control system according to any one of the inventions of claims 1 to 6 and a water level sensor. The water level sensor detects the water level in the bathtub.

The hot water supply system according to the invention of claim 8 includes the communication system according to the invention of claim 7 and a hot water supply unit. The hot water supply unit supplies hot water to the bathtub.

The hot water supply system according to the invention of claim 9 is the hot water supply system according to the invention of claim 8, further comprising a bathroom remote control that controls the hot water supply unit. At least one of the communication unit, the identification unit, and the determination unit is provided in the bathroom remote control.

In the communication control system according to the invention of claim 1, the identification unit identifies an information terminal to wirelessly connect to the communication unit based on a change in the water level in the bathtub, and when the radio wave strength of the signal received by the communication unit from the specific information terminal satisfies the radio wave strength condition, the communication unit wirelessly connects to the specific information terminal. This has the advantage of preventing the communication unit from wirelessly connecting to the information terminal at a time unintended by the user.

In the communication control system according to the invention of claim 2, the identification unit identifies an information terminal among the multiple information terminals to wirelessly connect to the communication unit based on a change in the water level in the bathtub, and when the radio wave strength of the signal received from the specific information terminal satisfies the radio wave strength condition, the communication unit wirelessly connects to the specific information terminal. This has the advantage that it is possible to prevent the communication unit from wirelessly connecting to an information terminal at a time unintended by the user, even when multiple information terminals are present.

In the communication control system according to the invention of claim 3, when the signal strength received by the communication unit from a specific information terminal is the highest among the radio wave strengths of the signals received by the communication unit from each of the multiple information terminals, the communication unit connects to the specific information terminal. This has the advantage that the communication unit can wirelessly connect to an information terminal that the user intentionally brings near the bathroom.

In the communication control system according to the invention of claim 4, when the reception strength of the signal received by the communication unit from the specific information terminal is equal to or greater than a threshold, the communication unit connects to the specific information terminal. This has the advantage that the communication unit can wirelessly connect to an information terminal that the user intentionally brings near the bathroom.

In the communication control system according to the invention of claim 5, the communication unit receives audio data from a specific information terminal. This has the advantage that the user can listen to the music data in the bathroom without the need for user operation.

In the communication control system according to the invention of claim 6, the sound output unit can output sound data. This has the advantage that the communication control system can output music data in the bathroom without requiring any operation by the user.

In the communication system according to the invention of claim 7, the information terminal to be wirelessly connected to the communication unit is identified based on the water level in the bathtub detected by the water level sensor. This has the advantage of providing a communication system that prevents the communication unit from wirelessly connecting to the information terminal at a time unintended by the user.

In the hot water supply system according to the invention of claim 8, the information terminal to be wirelessly connected to the communication unit is identified based on the change in the water level in the bathtub. This has the advantage of providing a hot water supply system that prevents the communication unit from wirelessly connecting to the information terminal at a time unintended by the user.

In the hot water supply system according to the invention of claim 9, at least one of the communication unit, the identification unit, and the determination unit is provided in the bathroom remote control. This has the advantage of providing a bathroom remote control that prevents the communication unit from wirelessly connecting to an information terminal at a time not intended by the user.

FIG. 1 is a block diagram showing a schematic configuration of a hot water supply system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a bathroom in which the above-mentioned communication control system is provided. FIG. 3 is an explanatory diagram illustrating the relationship between the user and the information terminal in the above embodiment. Fig. 4A is an explanatory diagram illustrating the water level of the bathtub when the user is not taking a bath, and Fig. 4B is an explanatory diagram illustrating the water level of the bathtub when the user is taking a bath. FIG. 5 is a flowchart showing the operation of the communication control system.

(Embodiment)
Hereinafter, a communication control system 100, a communication system 200, and a hot water supply system 300 according to the embodiments will be described with reference to the drawings. Figures 2 and 4 referred to in the following embodiments are schematic diagrams, and the ratios of sizes and thicknesses of the components in the figures do not necessarily reflect the actual dimensional ratios.

(1) Overview Hereinafter, an overview of a communication control system 100 according to an embodiment will be described with reference to FIGS. 1, 2, and 3. FIG.

As shown in FIG. 1, the communication control system 100 includes a memory unit 11, a communication unit 12, a change value calculation unit 13, an identification unit 14, and a determination unit 15. For example, the communication control system 100 is used to connect a device provided in a bathroom 9 (see FIG. 2) to an information terminal 4. In this embodiment, a bathroom remote control 1 described below has the communication control system 100. As shown in FIG. 2, the bathroom 9 here includes a washing area space 91 and a bathtub space 92, and the bathroom remote control 1 is installed on a wall within the bathroom 9. In addition, a user 5 owns an information terminal 4, as shown in FIG. 3.

The storage unit 11 shown in FIG. 1 associates a water level rise value, which is the value by which the water level of the bathtub 93 rises when at least one user 5 takes a bath, with an information terminal 4 owned by at least one user 5 and stores the water level rise value in advance as registration data ΔLr. The communication unit 12 receives a signal from the information terminal 4 as a reception signal.

The change value calculation unit 13 acquires data on the water level of the bathtub 93 and obtains the amount of change in the water level as a change value. The identification unit 14 compares the change value with the registered data and identifies the information terminal 4 linked to the registered data corresponding to the change value as a specific information terminal. The determination unit 15 determines whether the specific radio wave strength, which is the radio wave strength of the received signal received from the specific information terminal, satisfies the radio wave strength condition based on the specific radio wave strength. Here, the radio wave strength condition is determined so that it can be determined whether the user 5 has brought the information terminal 4 near the bathroom 9 (for example, a changing room, etc.) in order to connect the communication unit 12 and the information terminal 4. If the specific radio wave strength satisfies the radio wave strength condition, the communication unit 12 wirelessly connects to the specific information terminal.

According to this configuration, the identification unit 14 identifies a specific information terminal based on the change value of the water level, and the communication unit 12 wirelessly connects to the information terminal 4 only when the specific radio wave intensity satisfies the radio wave intensity condition. Specifically, the communication unit 12 wirelessly connects to the information terminal 4 owned by the user 5 taking a bath only when the user 5 is taking a bath and the information terminal 4 owned by the user 5 taking a bath is brought near the bathroom 9. On the other hand, when the user 5 is not taking a bath, the communication unit 12 does not wirelessly connect to the information terminal 4 even when the information terminal 4 approaches the communication unit 12. Also, when the information terminal 4 owned by the user 5 taking a bath is not brought near the bathroom 9, the communication unit 12 does not wirelessly connect to the information terminal 4 even when the user 5 is taking a bath.

In other words, the communication control system 100 has the advantage of being able to prevent the communication unit 12 from wirelessly connecting to the information terminal 4 at a time not intended by the user 5.

(2) Detailed Configuration (2-1) Communication Control System Hereinafter, the communication control system 100 according to the present embodiment will be described in detail with reference to FIGS. 1 to 4. FIG.

As shown in FIG. 1, the communication control system 100 of this embodiment includes a memory unit 11, a communication unit 12, a change value calculation unit 13, an identification unit 14, and a determination unit 15.

In this embodiment, there are multiple users 5. In this description, it is assumed that there are three users 5, as shown in FIG. 3. For example, user 5A is a male user 5, user 5B is a female user 5, and user 5C is a child user 5. Furthermore, users 5A, 5B, and 5C each own information terminals 4A, 4B, and 4C.

The storage unit 11 links the water level rise values corresponding to each of the multiple users 5 to the information terminals 4 owned by each of the multiple users 5 and stores them in advance as registered data ΔLr. The multiple water level rise values are different depending on the physical builds of the multiple users 5. More specifically, the water level rise value of a user 5 with a large build is larger than the water level rise value of a user 5 with a small build. For example, since user 5A, a male user 5, and user 5B, a female user 5, have different physical builds, the water level rise values of user 5A and user 5B are different values. Similarly, user 5A, a male user 5, and user 5C, a child user 5, have different physical builds, the water level rise values of user 5A and user 5C are different values. The storage unit 11 links the water rise data corresponding to user 5A to the information terminal 4A and stores them in advance as registered data ΔLr. Similarly, the storage unit 11 links the water rise data corresponding to users 5B and 5C to information terminals 4B and 4C, respectively, and stores them in advance as registration data ΔLr.

The storage unit 11 of this embodiment links the water level rise value input by the user 5 via the operation unit 19 of the bathroom remote control 1 described below to the information terminal 4 owned by each of the multiple users 5, and stores it in advance as registration data ΔLr. The storage unit 11 may also link the value of the rise in the water level of the bathtub 93 when the user 5 actually takes a bath, measured by the water level sensor 2 described below, to the information terminal 4 owned by each of the multiple users 5, and store it in advance as registration data ΔLr.

For example, the memory unit 11 in this embodiment is a memory device such as a magnetic core memory or a semiconductor memory. The memory unit 11 may also be an auxiliary memory device such as an SSD (Solid State Drive) or an HDD (Hard Disk Drive).

The communication unit 12 receives signals as reception signals from multiple information terminals 4. The communication method between the communication unit 12 and the information terminals 4 is wireless communication using radio waves as a medium that complies with communication standards such as Bluetooth (registered trademark), a specific low-power radio station (a radio station that does not require a license) in the 920 MHz band, or Wi-Fi (registered trademark).

The information terminal 4 in this embodiment is, for example, a terminal carried by the user 5, and is specifically a smartphone or a tablet computer. The information terminal 4 may also be, for example, a laptop personal computer, a wearable device such as a smartwatch, or a music player with a communication function.

The change value calculation unit 13 obtains data on the water level of the bathtub 93 detected by the water level sensor 2 described below, and calculates the amount of change in the water level as a change value ΔLm. More specifically, as shown in Fig. 4A, when the user 5 is not taking a bath, hot water is stored in the bathtub 93 in the bathroom 9 up to a water level L1. When the user 5 then takes a bath, the hot water in the bathtub 93 rises to a water level L2. The change value calculation unit 13 calculates the amount of change in the water level as a change value ΔLm based on equation (1).
ΔLm=|L2-L1| ... (1) The identification unit 14 compares the change value ΔLm with the registered data ΔLr, and identifies, among the multiple information terminals 4, an information terminal 4 linked to the registered data ΔLr corresponding to the change value ΔLm as a specific information terminal. A more detailed explanation will be given. When there is registered data ΔLr that matches the change value ΔLm among the registered data ΔLr registered for each of the multiple users 5, the identification unit 14 identifies, as a specific information terminal, the information terminal 4 linked to the registered data ΔLr that matches the change value ΔLm. On the other hand, when there is no registered data ΔLr that matches the change value ΔLm among the registered data ΔLr registered for each of the multiple users 5, the identification unit 14 does not identify the information terminal 4.

Specifically, when the result of comparing the change value ΔLm with the registered data ΔLr is that the registered data ΔLr corresponding to the user 5A matches the change value ΔLm, the identification unit 14 identifies the information terminal 4A as a specific information terminal among the multiple information terminals 4.

In addition, immediately after the user 5 has taken a bath, the water level in the bathtub 93 is not stable and the variation in the water level data detected by the water level sensor 2 is large, which may lead to a large variation in the change value ΔLm calculated by the change value calculation unit 13. Therefore, when the variation in the change value ΔLm falls within a predetermined range and the change value ΔLm converges to a value within a certain range previously set by the user 5, the identification unit 14 compares the change value ΔLm with the registered data ΔLr.

The determination unit 15 determines whether the specific radio wave strength satisfies the radio wave strength condition based on the specific radio wave strength, which is the radio wave strength of the received signal received from the specific information terminal. Specifically, when the determination unit 14 identifies the information terminal 4A as the specific information terminal, the specific radio wave strength is the radio wave strength of the received signal received from the information terminal 4A among the radio wave strengths of the received signals received from the multiple information terminals 4. The radio wave strength condition in this embodiment is that the specific radio wave strength is equal to or greater than a threshold value. The radio wave strength of the received signal is, for example, received signal strength (RSSI).

The threshold will be described in more detail. In this embodiment, the storage unit 11 further stores the radio wave strength of the information terminal 4 when the process of linking to the registration data ΔLr is performed as the initial radio wave strength. The determination unit 15 sets a value determined based on the initial radio wave strength as the threshold. For example, the determination unit 15 sets a value obtained by multiplying the initial radio wave strength by 0.7 as the threshold. When the specific radio wave strength is smaller than the threshold, the determination unit 15 can determine that the user 5 does not require a wireless connection between the communication unit 12 and the specific information terminal and that the user 5 has not intentionally brought the specific information terminal near the bathroom 9.

When the specific radio wave intensity satisfies the radio wave intensity condition, the communication unit 12 wirelessly connects to the specific information terminal. In this embodiment, the communication unit 12 wirelessly connects to the specific information terminal and receives sound data from the specific information terminal. The sound data is stored in the specific information terminal. The sound data may be stored in a server and transferred to the communication unit 12 via the specific information terminal.

The communication control system 100 further includes a sound output unit 16 that outputs sound data. The sound output unit 16 has, for example, a small speaker, and outputs the sound data received by the communication unit 12 as sound to communicate it to the user 5. In this embodiment, as shown in FIG. 2, the bathroom remote control 1 includes the sound output unit 16. Note that the sound output unit 16 may be a separate device from the bathroom remote control 1, and may be installed on the ceiling of the bathroom 9.

The communication control system 100 preferably includes a computer system. In the computer system, a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) reads and executes a program stored in a memory, thereby realizing the functions of the change value calculation unit 13, the identification unit 14, and the determination unit 15. The computer system includes a processor that operates according to a program as a main hardware configuration. The type of processor is not important as long as it can realize the function by executing the program. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). Here, it is called an IC or an LSI, but the name changes depending on the degree of integration, and it may be called a system LSI, a VLSI (Very Large Scale Integration), or an ULSI (Ultra Large Scale Integration). A field programmable gate array (FPGA) that is programmed after the LSI is manufactured, or a reconfigurable logic device that can reconfigure the connection relationship inside the LSI or set up the circuit partition inside the LSI, can also be used for the same purpose. The electronic circuits may be integrated on one chip, or may be provided on multiple chips. The multiple chips may be integrated on one device, or may be provided on multiple devices.

(2-2) Communication System As shown in FIG. 1, the communication system 200 includes the above-described communication control system 100 and a water level sensor 2.

The water level sensor 2 detects the water level in the bathtub 93 in the bathroom 9. More specifically, the water level sensor 2 is composed of a pressure sensor provided at the connection point of the hot water supply line to the bathtub 93. When the water level in the bathtub 93 rises, the pressure detected by the pressure sensor increases. The water level sensor 2 detects the water level in the bathtub 93 based on the detected pressure.

(2-3) Hot Water Supply System As shown in FIG. 1, hot water supply system 300 includes communication system 200 described above and hot water supply unit 3.

The hot water supply unit 3 supplies hot water to the bathtub 93 in the bathroom 9. More specifically, hot water supplied from the tap is heated by a gas-fired burner, and the hot water is supplied to the bathtub 93 in the bathroom 9 through a hot water supply line (not shown). For example, the hot water supply unit 3 in this embodiment is a gas water heater. Note that the hot water supply unit 3 may also heat water using electricity or kerosene.

The hot water supply system 300 further includes a bathroom remote control 1 that controls the hot water supply unit 3. This will be explained in more detail. The bathroom remote control 1 includes a hot water supply control unit 17, a display unit 18, and an operation unit 19. The display unit 18 includes, for example, a display panel (liquid crystal panel), and displays various information such as the temperature and water level of the hot water stored in the bathtub 93 (see FIG. 2) and the temperature of the hot water output from the shower. The operation unit 19 includes multiple operation buttons 191-195 (five in FIG. 2), and accepts various operations by the user 5, such as changing the temperature and water level of the hot water. The hot water supply control unit 17 controls the hot water supply unit 3 based on the various operations of the user 5 accepted by the operation unit 19.

(3) Operation (3-1) Operation Until Wireless Connection with Specific Information Terminal In the embodiment, the operation of the communication control system 100 until the communication unit 12 wirelessly connects with the specific information terminal will be described with reference to the flowchart of FIG.

First, the user 5 starts bathing in the bathtub 93 in the bathroom 9 (S1). Then, the change value calculation unit 13 acquires data on the water level of the bathtub 93 detected by the water level sensor 2, and calculates the amount of change in the water level as a change value ΔLm (S2).

Then, when the variation in the change value ΔLm calculated by the change value calculation unit 13 falls within a predetermined range and the change value ΔLm converges to a value within a certain range, the identification unit 14 compares the change value ΔLm with the registered data ΔLr stored in the storage unit 11 (S3). If the identification unit 14 is not able to identify the information terminal 4 (S4: NO), the identification unit 14 does not identify the information terminal 4 (S6). More specifically, if the registered data ΔLr does not match the change value ΔLm, the identification unit 14 does not identify the information terminal 4. Then, the communication unit 12 does not wirelessly connect to the information terminal 4 (S9).

On the other hand, if the identification unit 14 is able to identify the information terminal 4 (S4: YES), the identification unit 14 identifies, among the multiple information terminals 4, the information terminal 4 linked to the registered data ΔLr as the specific information terminal (S5). More specifically, if the registered data ΔLr matches the change value ΔLm, the identification unit 14 identifies, among the multiple information terminals 4, the information terminal 4 linked to the registered data ΔLr as the specific information terminal.

Then, based on the specific radio wave strength, which is the radio wave strength of the received signal received by the communication unit 12 from the specific information terminal, the determination unit 15 determines whether the specific radio wave strength satisfies the radio wave strength condition (S7). If the specific radio wave strength does not satisfy the radio wave strength condition (S7: NO), the communication unit 12 does not wirelessly connect to the information terminal 4 (S9).

On the other hand, if the specific radio wave strength satisfies the radio wave strength condition (S7: YES), the communication unit 12 wirelessly connects to the information terminal 4 (S8).

The flowchart in FIG. 5 is merely an example of the operation of the communication control system 100 of the embodiment, and the order of the processes may be changed as appropriate, or any of the processes may be omitted as appropriate.

(4) Modifications The above-described embodiment is merely one of various embodiments of the present invention. The above-described embodiment can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. The following modifications may be realized in appropriate combination.

In the above embodiment, the radio wave strength condition is that the specific radio wave strength is equal to or greater than a threshold value, but the radio wave strength condition may also be that the specific radio wave strength is the highest among the radio wave strengths of the received signals received from each of the multiple information terminals 4. Note that the radio wave strength condition may also be that the specific radio wave strength is equal to or greater than a threshold value and that the specific radio wave strength is the highest among the radio wave strengths of the received signals received from each of the multiple information terminals 4.

When at least two users 5 have similar physical builds, at least two of the registered data ΔLr may match the change value ΔLm. Therefore, the identification unit 14 may identify at least two of the multiple information terminals 4 as specific information terminals. In this case, the radio wave strength condition may be that the specific radio wave strength is the highest among the radio wave strengths of the received signals received from each of the multiple information terminals 4. At this time, the communication unit 12 wirelessly connects to the specific information terminal that satisfies the radio wave strength condition among the at least two specific information terminals. More specifically, the communication unit 12 wirelessly connects to the specific information terminal that transmits the strongest radio wave strength among the at least two specific information terminals. This allows the communication unit 12 to wirelessly connect to the information terminal 4 that the user 5 intentionally brought near the bathroom 9.

In addition, in the above-described embodiment, the communication unit 12, the identification unit 14, and the judgment unit 15 are provided in the bathroom remote control 1, but at least any one of the communication unit 12, the identification unit 14, and the judgment unit 15 may be provided in the bathroom remote control 1.

In addition, in one embodiment, when there is registered data ΔLr that matches the change value ΔLm, the identification unit 14 identifies, among the multiple information terminals 4, the information terminal 4 linked to the registered data ΔLr as a specific information terminal. However, when the difference between the change value ΔLm and the registered data ΔLr is equal to or less than a predetermined allowable value, the identification unit 14 may identify, among the multiple information terminals 4, the information terminal 4 linked to the registered data ΔLr as a specific information terminal. This prevents erroneous identification by the identification unit 14 due to variations in the change value ΔLm. The allowable value is determined in advance by the user 5 and stored in the storage unit 11.

In addition, the identification unit 14 according to one embodiment compares the change value ΔLm with the registered data ΔLr when the variation in the change value ΔLm falls within a predetermined range and the change value ΔLm converges to a value within a certain range set in advance by the user 5. However, the identification unit 14 may also compare the change value ΔLm with the registered data ΔLr at predetermined time intervals.

In addition, the communication unit 12 according to one embodiment is wirelessly connected to the specific information terminal and receives audio data from the specific information terminal, but the communication unit 12 may also receive video data from the specific information terminal. In this case, the communication control system 100 may further include a video output unit that outputs the video data. The communication unit 12 may also receive still image data from the specific information terminal. In this case, the communication control system 100 may further include a still image output unit that outputs the still image data.

In addition, the communication unit 12 according to one embodiment may receive sound data from a specific information terminal via a repeater. Specifically, when an information terminal 4 owned by a user taking a bath is brought near the bathroom 9 together with the repeater, the communication unit 12 may receive sound data, etc. from the information terminal 4 via the repeater. At this time, even if the repeater does not hold sound data, etc. to transmit to the communication unit 12, it becomes possible for the information terminal 4 to transmit sound data, etc. held by the information terminal 4 to the communication unit 12. The repeater is, for example, an information terminal different from the information terminal owned by the user taking a bath.

It is also possible that the repeater is brought near the bathroom 9, and the information terminal 4 owned by the bathing user 5 is in a location other than the changing room (e.g., the living room, etc.). In this case, communication between the repeater and the information terminal 4 owned by the bathing user 5 may use Wi-Fi (registered trademark), and communication between the repeater and the communication unit 12 may use Bluetooth (registered trademark). In this case, when only the repeater is brought near the bathroom 9 and the information terminal 4 owned by the bathing user 5 is not brought near the bathroom 9, the communication unit 12 can receive sound data from the information terminal 4 via the repeater.

The above-described embodiment is an example of the present invention. Therefore, the present invention is not limited to the above-described embodiment, and various modifications can be made to the embodiment other than the above-described embodiment, depending on the design, etc., as long as they do not deviate from the technical concept of the present invention.

REFERENCE SIGNS LIST 100 Communication control system 200 Communication system 300 Hot water supply system 1 Bathroom remote control 11 Storage unit 12 Communication unit 13 Change value calculation unit 14 Identification unit 15 Determination unit 16 Sound output unit 2 Water level sensor 3 Hot water supply unit 4 Information terminal 5 User 93 Bathtub

Claims (8)

A storage unit that links a water level rise value, which is a value by which the water level of the bathtub rises when a user takes a bath, to an information terminal owned by the user and stores the value as registration data in advance;
a communication unit that receives a signal from the information terminal as a received signal;
a change value calculation unit that acquires data on the water level of the bathtub and calculates a change in the water level as a change value;
an identification unit that compares the change value with the registered data and identifies the information terminal linked to the registered data corresponding to the change value as a specific information terminal;
a determination unit that determines whether or not a specific radio wave intensity satisfies a radio wave intensity condition based on a specific radio wave intensity that is a radio wave intensity of the reception signal received from the specific information terminal,
When the specific radio wave intensity satisfies the radio wave intensity condition, the communication unit wirelessly connects to the specific information terminal ,
The communication unit receives sound data from the specific information terminal.
Communications control system. The user is a plurality of users,
The storage unit links the water level rise value corresponding to each of the plurality of users with the information terminal owned by each of the plurality of users and stores the water level rise value in advance as the registration data,
The communication control system according to claim 1 , wherein the identification unit compares the change value with the registration data and identifies, among the plurality of information terminals, the information terminal linked to the registration data corresponding to the change value as the specific information terminal. The communication control system according to claim 2 , wherein the radio wave intensity condition includes that the specific radio wave intensity is the highest among radio wave intensities of the signals received from each of the plurality of information terminals. The communication control system according to claim 1 , wherein the radio wave intensity condition includes that the specific radio wave intensity is equal to or greater than a threshold value. The apparatus further includes a sound output unit that outputs the sound data.
The communication control system according to any one of claims 1 to 4. A communication control system according to any one of claims 1 to 5;
a water level sensor for detecting the water level in the bathtub;
Communication systems. A communication system according to claim 6;
A hot water supply unit that supplies hot water to the bathtub.
Hot water system. A bathroom remote control for controlling the hot water supply unit is further provided.
At least one of the communication unit, the identification unit, and the determination unit is provided in the bathroom remote control.
The hot water system according to claim 7.

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