Communication control system, communication system, and hot water supply system

Abstract

To provide a communication control system, a communication system and a hot water supply system which prevent a communication unit from being wirelessly connected to an information terminal at a timing not intended by a user.SOLUTION: A communication control system 100 comprises a storage unit 11, a communication unit 12, a change value calculation unit 13, an identification unit 14, and an assessment unit 15. The storage unit 11 preliminarily stores, as registered data, a water level rise value when a user takes a bath, in linkage with an information terminal 4 that the user owns. The change value calculation unit 13 finds a change amount of water level as a change value. The identification unit 14 checks the change value against the registered data and identifies the information terminal 4 linked to the registered data as a specific information terminal. The assessment unit 15 assesses whether or not a specific radio wave strength which is the radio wave strength of a received signal having been received from the specific information terminal satisfies a radio wave strength condition. When the specific radio wave strength satisfies the radio wave strength condition, the communication unit 12 is wirelessly connected to the specific information terminal.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] 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.

Background Art

[0002] Patent Document 1 discloses a health management system including a bather determination device. This bather determination device is provided with a weight sensor at the leg portion of the bathtub, measures the weight before bathing and the weight during bathing, and measures the weight of the bather from the difference therebetween. Further, the bather determination device is provided with a water level sensor and detects the water level difference before and during bathing. Then, the body fat percentage is measured based on the change in the water level at the time of bathing, the measured weight, and the information of the bather.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, devices in the bathroom equipped with a communication unit capable of wireless connection to an information terminal have become widespread. Since the communication unit automatically connects to the information terminal as soon as the owner of the information terminal (hereinafter referred to as the user) approaches the bathroom, there has been a problem that the communication unit wirelessly connects to the information terminal at an unintended timing for the user.

[0005] An object of the present invention is to provide a communication control system, a communication system, and a hot water supply system that prevent the communication unit from wirelessly connecting to the information terminal at an unintended timing for the user.

Means for Solving the Problems

[0006] 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 determination unit. The storage unit pre-stores, as registration data, a water level rise value, which is a value by which the water level of the bathtub rises when the user takes a bath, in association with an information terminal owned by the user. 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 of the bathtub and obtains a change amount of the water level as a change value. The identification unit collates the change value with the registration data and identifies, as a specific information terminal, the information terminal associated with the registration data corresponding to the change value. The determination unit determines whether or not the specific radio wave intensity, which is the radio wave intensity of the received signal received from the specific information terminal, satisfies a radio wave intensity condition. When the specific radio wave intensity satisfies the radio wave intensity condition, the communication unit wirelessly connects to the specific information terminal.

[0007] In the communication control system according to the invention of claim 2, in the communication control system according to the invention of claim 1, there are a plurality of users. The storage unit pre-stores, as the registration data, the water level rise values corresponding to each of the plurality of users in association with the information terminals owned by each of the plurality of users. The identification unit collates the change value with the registration data and identifies, as the specific information terminal, the information terminal associated with the registration data corresponding to the change value among the plurality of information terminals.

[0008] 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 intensity condition includes that the specific radio wave intensity is the highest among the radio wave intensities of the received signals received from each of the plurality of information terminals.

[0009] 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 intensity condition includes that the specific radio wave intensity is equal to or higher than a threshold value.

[0010] In the communication control system according to the invention of claim 5, in the communication control system according to any one of the inventions of claims 1 to 4, the communication unit receives audio data from the specific information terminal.

[0011] The communication control system according to the invention of claim 6 further includes an audio output unit that outputs the audio data in the communication control system according to the invention of claim 5.

[0012] The communication system according to the invention of claim 7 includes the 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 of the bathtub.

[0013] 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.

[0014] The hot water supply system according to the invention of claim 9 further includes a bathroom remote control for controlling the hot water supply unit in the hot water supply system according to the invention of claim 8. At least one of the communication unit, the specific unit, and the determination unit is provided in the bathroom remote control.

Advantages of the Invention

[0015] In the communication control system according to the invention of claim 1, the specific unit identifies the information terminal that wirelessly connects to the communication unit based on the change in the water level of the bathtub. When the radio wave intensity of the signal received by the communication unit from the specific information terminal satisfies the radio wave intensity condition, the communication unit wirelessly connects to the specific information terminal. Thus, there is an advantage that it is possible to prevent the communication unit from wirelessly connecting to the information terminal at a timing unintended by the user.

[0016] In the communication control system according to the invention of claim 2, the specifying unit specifies an information terminal that is wirelessly connected to the communication unit among a plurality of information terminals based on a change in the water level of the bathtub. When the radio wave intensity of the signal received from the specified information terminal satisfies the radio wave intensity condition, the communication unit wirelessly connects to the specified information terminal. Thereby, there is an advantage that even when there are a plurality of information terminals at a timing unintended by the user, it is possible to prevent the communication unit from wirelessly connecting to the information terminal.

[0017] In the communication control system according to the invention of claim 3, when the reception intensity of the signal received by the communication unit from the specified information terminal is the highest among the radio wave intensities of the reception signals received by the communication unit from each of the plurality of information terminals, the communication unit connects to the specified information terminal. Thereby, there is an advantage that the communication unit can wirelessly connect to an information terminal that the user has intentionally brought near the bathroom.

[0018] In the communication control system according to the invention of claim 4, when the reception intensity of the signal received by the communication unit from the specified information terminal is equal to or higher than a threshold value, the communication unit connects to the specified information terminal. Thereby, there is an advantage that the communication unit can wirelessly connect to an information terminal that the user has intentionally brought near the bathroom.

[0019] In the communication control system according to the invention of claim 5, the communication unit receives audio data from the specified information terminal. Thereby, there is an advantage that the user can check music data in the bathroom without the need for an operation by the user.

[0020] In the communication control system according to the invention of claim 6, the sound output unit can output audio data. Thereby, there is an advantage that the communication control system can output music data in the bathroom without the need for an operation by the user.

[0021] In the communication system according to the invention of claim 7, an information terminal that is wirelessly connected to the communication unit is identified based on the water level of the bathtub detected by the water level sensor. As a result, there is an advantage that it is possible to provide a communication system that prevents the communication unit from wirelessly connecting to the information terminal at a timing unintended by the user.

[0022] In the hot water supply system according to the invention of claim 8, an information terminal that is wirelessly connected to the communication unit is identified based on the change in the water level of the bathtub. As a result, there is an advantage that it is possible to provide a hot water supply system that prevents the communication unit from wirelessly connecting to the information terminal at a timing unintended by the user.

[0023] In the hot water supply system according to the invention of claim 9, at least one of the communication unit, the specifying unit, and the determination unit is provided in the bathroom remote control. As a result, there is an advantage that it is possible to provide a bathroom remote control that prevents the communication unit from wirelessly connecting to the information terminal at a timing unintended by the user.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Mode for Carrying Out the Invention

[0025] (Embodiment) Hereinafter, the communication control system 100, communication system 200, and hot water supply system 300 according to the embodiments will be described with reference to the drawings. FIGS. 2 and 4 referred to in the following embodiments and the like are schematic diagrams, and the respective ratios of the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensional ratios.

[0026] (1) Overview Hereinafter, the overview of the communication control system 100 according to the embodiment will be described with reference to FIGS. 1, 2, and 3.

[0027] As shown in FIG. 1, the communication control system 100 includes a storage unit 11, a communication unit 12, a change value calculation unit 13, a specifying unit 14, and a determination unit 15. For example, the communication control system 100 is used for a device provided in the bathroom 9 (see FIG. 2) to connect to the information terminal 4. In this embodiment, the bathroom remote controller 1 described later has the communication control system 100. Here, as shown in FIG. 2, the bathroom 9 includes a washroom space 91 and a bathtub space 92, and the bathroom remote controller 1 is installed on the wall inside the bathroom 9. Also, as shown in FIG. 3, the user 5 owns the information terminal 4.

[0028] The storage unit 11 shown in FIG. 1 associates a water level rise value, which is the value by which the water level in the bathtub 93 rises when at least one user 5 takes a bath, with the information terminal 4 owned by at least one user 5, and stores it in advance as registration data ΔLr. The communication unit 12 receives a signal from the information terminal 4 as a received signal.

[0029] 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 specifying unit 14 collates the change value with the registered data and specifies the information terminal 4 associated with the registered data corresponding to the change value as a specific information terminal. The determination unit 15 determines whether or not the specific radio wave intensity, which is the radio wave intensity of the received signal received from the specific information terminal, satisfies the radio wave intensity condition. Here, the radio wave intensity condition is determined so that it can be determined whether or not the user 5 has brought the information terminal 4 near the bathroom 9 (for example, in the dressing room, etc.) in order to connect the communication unit 12 and the information terminal 4. When the specific radio wave intensity satisfies the radio wave intensity condition, the communication unit 12 wirelessly connects to the specific information terminal.

[0030] According to this configuration, the specifying unit 14 specifies the specific information terminal based on the change value of the water level, and only when the specific radio wave intensity satisfies the radio wave intensity condition, the communication unit 12 wirelessly connects to the information terminal 4. Specifically, only when the user 5 is taking a bath and the information terminal 4 owned by the user 5 taking the bath is brought near the bathroom 9, the communication unit 12 wirelessly connects to the information terminal 4 owned by the user 5 taking the bath. On the other hand, when the user 5 is not taking a bath, even when the information terminal 4 approaches the communication unit 12, the communication unit 12 does not wirelessly connect to the information terminal 4. Also, when the information terminal 4 owned by the user 5 taking the bath is not brought near the bathroom 9, even when the user 5 is taking a bath, the communication unit 12 does not wirelessly connect to the information terminal 4.

[0031] That is, 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 timing unintended by the user 5.

[0032] (2) Detailed configuration (2-1) Communication control system Hereinafter, the communication control system 100 in the present embodiment will be described in detail with reference to FIGS. 1 to 4.

[0033] As shown in FIG. 1, the communication control system 100 of the present embodiment includes a storage unit 11, a communication unit 12, a change value calculation unit 13, an identification unit 14, and a determination unit 15.

[0034] In the present embodiment, there are a plurality of users 5. In this description, as shown in FIG. 3, it is assumed that there are three users 5. For example, user 5A is a male user 5, user 5B is a female user 5, and user 5C is a child user 5. Further, each of users 5A, 5B, and 5C owns an information terminal 4A, 4B, and 4C, respectively.

[0035] The storage unit 11 pre-stores, as registration data ΔLr, the water level rise values corresponding to each of the plurality of users 5 in association with the information terminals 4 owned by each of the plurality of users 5. The plurality of water level rise values are different values depending on the physiques of the plurality of users 5. More specifically, the water level rise value of a user 5 with a larger physique is larger than the water level rise value of a user 5 with a smaller physique. For example, since user 5A, who is a male user 5, and user 5B, who is a female user 5, have different physiques, the water level rise values of user 5A and user 5B are different values. Similarly, since user 5A, who is a male user 5, and user 5C, who is a child user 5, have different physiques, the water level rise values of user 5A and user 5C are different values. The storage unit 11 associates the water level rise data corresponding to user 5A with the information terminal 4A and pre-stores it as registration data ΔLr. Similarly, the storage unit 11 associates each of the water level rise data corresponding to users 5B and 5C with the respective information terminals 4B and 4C and pre-stores it as registration data ΔLr.

[0036] The storage unit 11 of the present embodiment pre-stores, as registration data ΔLr, the water level rise value input by the user 5 via the operation unit 19 of the bathroom remote controller 1 described later in association with the information terminal 4 owned by each of the plurality of users 5. Note that the storage unit 11 may also pre-store, as registration data ΔLr, the value by which the water level of the bathtub 93 rises when the user 5 actually takes a bath, measured by the water level sensor 2 described later, in association with the information terminal 4 owned by each of the plurality of users 5.

[0037] For example, the storage unit 11 of the present embodiment is a storage device such as a magnetic core memory or a semiconductor memory. Further, the storage unit 11 may be an auxiliary storage device such as an SSD (Solid State Drive) or an HDD (Hard Disk Drive).

[0038] The communication unit 12 receives signals from a plurality of information terminals 4 as received signals. The communication method between the communication unit 12 and the information terminal 4 is wireless communication using radio waves, for example, in accordance with a communication standard such as Bluetooth (registered trademark), a specific low-power radio station in the 920 MHz band (a radio station that does not require a license), or Wi-Fi (registered trademark).

[0039] The information terminal 4 of the present embodiment is, for example, a terminal carried by the user 5, and specifically, a smartphone or a tablet-type computer. Further, the information terminal 4 may be, for example, a laptop personal computer, a wearable device such as a smartwatch, or a music player having a communication function.

[0040] The change value calculation unit 13 acquires data on the water level of the bathtub 93 detected by the water level sensor 2 described later, and obtains the amount of change in the water level as the change value ΔLm. More specifically, it will be described. As shown in FIG. 4A, when the user 5 is not taking a bath, hot water is stored up to the water level L1 in the bathtub 93 of the bathroom 9. Thereafter, when the user 5 takes a bath, the hot water in the bathtub 93 rises to the water level L2. The change value calculation unit 13 obtains the amount of change in the water level as the change value ΔLm based on the formula (1). ΔLm = |L2 - L1| ……… Formula (1) The specific unit 14 compares the change value ΔLm with the registered data ΔLr, and among the plurality of information terminals 4, identifies the information terminal 4 linked to the registered data ΔLr corresponding to the change value ΔLm as the specific information terminal. This will be described in more detail. Among the registered data ΔLr registered for each of the plurality of users 5, if there is registered data ΔLr that matches the change value ΔLm, the specific unit 14 identifies the information terminal 4 linked to the registered data ΔLr that matches the change value ΔLm as the specific information terminal. On the other hand, among the registered data ΔLr registered for each of the plurality of users 5, if there is no registered data ΔLr that matches the change value ΔLm, the specific unit 14 does not identify the information terminal 4.

[0041] Specifically, as a result of comparing the change value ΔLm with the registered data ΔLr, if the registered data ΔLr corresponding to the user 5A matches the change value ΔLm, the specific unit 14 identifies the information terminal 4A among the plurality of information terminals 4 as the specific information terminal.

[0042] Also, immediately after the user 5 takes 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 becomes large. Therefore, it is conceivable that the variation in the change value ΔLm obtained by the change value calculation unit 13 also becomes large. For this reason, the specific unit 14 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.

[0043] The determination unit 15 determines whether the specific radio wave intensity, which is the radio wave intensity of the received signal received from the specific information terminal, satisfies the radio wave intensity condition. Specifically, when the specific unit 14 identifies the information terminal 4A as the specific information terminal, the specific radio wave intensity is the radio wave intensity of the received signal received from the information terminal 4A among the radio wave intensities of the received signals received from the plurality of information terminals 4. The radio wave intensity condition in this embodiment is that the specific radio wave intensity is equal to or greater than the threshold value. The radio wave intensity of the received signal is, for example, the received signal strength indicator (RSSI).

[0044] More specifically, the threshold value will be described. In the present embodiment, the storage unit 11 further stores, as the initial radio wave intensity, the radio wave intensity of the information terminal 4 when the process of associating with the registered data ΔLr is performed. The determination unit 15 sets a value determined based on the initial radio wave intensity as the threshold value. For example, the determination unit 15 sets a value obtained by multiplying the initial radio wave intensity by 0.7 as the threshold value. When the specific radio wave intensity is smaller than the threshold value, the determination unit 15 can determine that the user 5 does not need a wireless connection between the communication unit 12 and the specific information terminal, and the user 5 does not intentionally bring the specific information terminal near the bathroom 9.

[0045] When the specific radio wave intensity satisfies the radio wave intensity condition, the communication unit 12 wirelessly connects to the specific information terminal. In the present embodiment, the communication unit 12 wirelessly connects to the specific information terminal and receives audio data from the specific information terminal. The audio data is stored in the specific information terminal. Note that the audio data may be stored in the server and transferred to the communication unit 12 via the specific information terminal.

[0046] The communication control system 100 further includes a sound output unit 16 that outputs audio data. The sound output unit 16 has, for example, a small speaker, and outputs the audio data received by the communication unit 12 as sound to convey it to the user 5. In the present 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, or may be installed on the ceiling of the bathroom 9.

[0047] The communication control system 100 preferably includes a computer system. In the computer system, each function of the change value calculation unit 13, the specification unit 14, and the determination unit 15 is realized by a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) reading and executing a program stored in a memory. The computer system includes a processor that operates according to a program as a main hardware configuration. The type of the processor is not limited as long as it can realize functions by executing a program. The processor is composed of one or more electronic circuits including a semiconductor integrated circuit (IC) or an LSI (Large Scale Integration). Here, although referred to as an IC or an LSI, the name may change depending on the degree of integration, and it may be referred to as a system LSI, a VLSI (Very Large Scale Integration), or a ULSI (Ultra Large Scale Integration). A field programmable gate array (FPGA) programmed after the manufacture of the LSI, or a reconfigurable logic device capable of reconfiguring the bonding relationship inside the LSI or setting up the circuit sections inside the LSI can also be used for the same purpose. The plurality of electronic circuits may be integrated on one chip or provided on a plurality of chips. The plurality of chips may be integrated into one device or provided in a plurality of devices.

[0048] (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.

[0049] The water level sensor 2 detects the water level of 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.

[0050] (2-3) Hot water supply system As shown in Fig. 1, the hot water supply system 300 includes the above-described communication system 200 and a hot water supply unit 3.

[0051] The hot water supply unit 3 supplies hot water to the bathtub 93 in the bathroom 9. More specifically, hot water obtained by heating water supplied from the water supply with a gas combustion type burner is supplied to the bathtub 93 in the bathroom 9 through a hot water supply path (not shown). For example, the hot water supply unit 3 of the present embodiment is a gas water heater. Note that the hot water supply unit 3 may heat water using electricity or kerosene.

[0052] The hot water supply system 300 further includes a bathroom remote controller 1 for controlling the hot water supply unit 3. More specifically, it will be described. The bathroom remote controller 1 has a hot water supply control unit 17, a display unit 18, and an operation unit 19. The display unit 18 has, 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 has a plurality (five in Fig. 2) of operation buttons 191 to 195, and accepts various operations of 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 various operations of the user 5 received by the operation unit 19.

[0053] (3) Operation (3-1) Operation until wireless connection with a specific information terminal In the embodiment, the operation of the communication control system 100 until the communication unit 12 makes a wireless connection with a specific information terminal will be described with reference to the flowchart of Fig. 5.

[0054] First, the user 5 starts taking a bath in the bathtub 93 in the bathroom 9 (S1). Then, the change value calculation unit 13 acquires the data of the water level of the bathtub 93 detected by the water level sensor 2, and calculates the change amount of the water level as the change value ΔLm (S2).

[0055] After that, when the variation of the variation value ΔLm calculated by the variation value calculation unit 13 falls within a predetermined range and the variation value ΔLm converges to a value within a certain range, the storage unit 11 stores the variation value ΔLm and collates it with the registered data ΔLr (S3). When the specifying unit 14 cannot specify the information terminal 4 (S4: NO), the specifying unit 14 does not specify the information terminal 4 (S6). More specifically, when the registered data ΔLr does not match the variation value ΔLm, the specifying unit 14 does not specify the information terminal 4. Then, the communication unit 12 does not perform a wireless connection with the information terminal 4 (S9).

[0056] On the other hand, when the specifying unit 14 can specify the information terminal 4 (S4: YES), the specifying unit 14 specifies the information terminal 4 associated with the registered data ΔLr among the plurality of information terminals 4 as the specified information terminal (S5). More specifically, when the registered data ΔLr matches the variation value ΔLm, the specifying unit 14 specifies the information terminal 4 associated with the registered data ΔLr among the plurality of information terminals 4 as the specified information terminal.

[0057] Then, based on the specific radio field intensity which is the radio field intensity of the received signal received by the communication unit 12 from the specified information terminal, the determination unit 15 determines whether or not the specific radio field intensity satisfies the radio field intensity condition (S7). When the specific radio field intensity does not satisfy the radio field intensity condition (S7: NO), the communication unit 12 does not perform a wireless connection with the information terminal 4 (S9).

[0058] On the other hand, when the specific radio field intensity satisfies the radio field intensity condition (S7: YES), the communication unit 12 performs a wireless connection with the information terminal 4 (S8).

[0059] The flowchart of 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 appropriately changed, or any of the processes may be appropriately omitted.

[0060] (4) Modification example The above-described embodiments are merely one of various embodiments of the present invention. The above-described embodiments can be variously modified according to the design or the like as long as the object of the present invention can be achieved. The following modification examples may be realized in appropriate combination.

[0061] In the above-described embodiment, the radio wave intensity condition is that the specific radio wave intensity is equal to or higher than the threshold value. However, the radio wave intensity condition may be that the specific radio wave intensity is the highest among the radio wave intensities of the received signals received from each of the plurality of information terminals 4. Note that the radio wave intensity condition may be that the specific radio wave intensity is equal to or higher than the threshold value and that the specific radio wave intensity is the highest among the radio wave intensities of the received signals received from each of the plurality of information terminals 4.

[0062] When the physiques of at least two of the plurality of users 5 are similar, at least two of the plurality of registered data ΔLr may match the change value ΔLm. Therefore, it is conceivable that the specifying unit 14 specifies at least two of the plurality of information terminals 4 as the specifying information terminals. In this case, the radio wave intensity condition may be that the specific radio wave intensity is the highest among the radio wave intensities of the received signals received from each of the plurality of information terminals 4. At this time, the communication unit 12 wirelessly connects to the specifying information terminal that satisfies the radio wave intensity condition among the at least two specifying information terminals. More specifically, the communication unit 12 wirelessly connects to the specifying information terminal that transmits the strongest radio wave intensity among the at least two specifying information terminals. Thereby, the communication unit 12 can wirelessly connect to the information terminal 4 that the user 5 has intentionally brought near the bathroom 9.

[0063] Also, in the above-described embodiment, the communication unit 12, the specifying unit 14, and the determination unit 15 are provided in the bathroom remote controller 1. However, at least one of the communication unit 12, the specifying unit 14, and the determination unit 15 may be provided in the bathroom remote controller 1.

[0064] Also, when there is registered data ΔLr that matches the change value ΔLm, the specifying unit 14 according to one aspect specifies, as a specific information terminal, the information terminal 4 among the plurality of information terminals 4 that is associated with the registered data ΔLr. 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 specifying unit 14 may specify, as a specific information terminal, the information terminal 4 among the plurality of information terminals 4 that is associated with the registered data ΔLr. This prevents mis-specification of the specifying 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.

[0065] Also, when the variation of 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, the specifying unit 14 according to one aspect collates the change value ΔLm with the registered data ΔLr. However, the specifying unit 14 may collate the change value ΔLm with the registered data ΔLr at predetermined intervals.

[0066] Also, the communication unit 12 according to one aspect wirelessly connects to a specific information terminal and receives audio data from the specific information terminal. However, the communication unit 12 may receive video data from the specific information terminal. At this time, the communication control system 100 may further include a video output unit that outputs video data. Note that the communication unit 12 may receive still image data from the specific information terminal. At this time, the communication control system 100 may further include a still image output unit that outputs still image data.

[0067] Also, the communication unit 12 according to one aspect may receive audio data from a specific information terminal via a repeater. Specifically, when the information terminal 4 owned by the user taking a bath is brought near the bathroom 9 together with the repeater, the communication unit 12 may receive audio data and the like from the information terminal 4 via the repeater. At this time, even when the repeater does not hold the audio data and the like to be transmitted to the communication unit 12, the information terminal 4 can transmit the audio data and the like 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.

[0068] In addition, the repeater is brought near the bathroom 9, and it is conceivable that the information terminal 4 owned by the user 5 taking a bath exists in a place different from the dressing room (for example, the living room, etc.). In this case, communication between the information terminal 4 owned by the user 5 taking a bath and the repeater may use Wi-Fi (registered trademark), and communication between the repeater and the communication unit 12 may use Bluetooth (registered trademark). At this time, only the repeater is brought near the bathroom 9, and when the information terminal 4 owned by the user 5 taking a bath is not brought near the bathroom 9, the communication unit 12 can receive audio data from the information terminal 4 via the repeater.

[0069] Note that 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 according to the design and the like as long as they do not depart from the technical idea of the present invention even outside this embodiment.

Explanation of Signs

[0070] 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 Judgment unit 16 Sound output unit 2 Water level sensor 3 Hot water supply unit 4 Information terminal 5 User 93 Bathtub

Claims

1. A storage unit that stores in advance, as registered data, a water level rise value, which is a value by which the water level in the bathtub rises when the user takes a bath, in association with an information terminal owned by the user; 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 obtains a change amount of the water level as a change value; A specifying unit that collates the change value with the registered data and specifies, as a specific information terminal, the information terminal associated with the registered data corresponding to the change value; A determination unit that determines whether or not the specific radio wave intensity, which is the radio wave intensity of the received signal received from the specific information terminal, satisfies a radio wave intensity condition, and includes: 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 A communication control system.

2. There are a plurality of the users, The storage unit stores in advance, as the registered data, the water level rise values corresponding to each of the plurality of users in association with the information terminals owned by each of the plurality of users; The specifying unit collates the change value with the registered data and specifies, as the specific information terminal, the information terminal associated with the registered data corresponding to the change value among the plurality of information terminals; The communication control system according to claim 1.

3. The radio wave intensity condition includes that the specific radio wave intensity is the highest among the radio wave intensities of the received signals received from each of the plurality of information terminals; The communication control system according to claim 2.

4. The radio wave intensity condition includes that the specific radio wave intensity is equal to or higher than a threshold value; The communication control system according to any one of claims 1 to 3.

5. The communication control system according to any one of claims 1 to 4, further comprising a sound output unit that outputs the sound data. The communication control system according to any one of claims 1 to 4.

6. The communication control system according to any one of claims 1 to 5, and A water level sensor that detects the water level of the bathtub. A communication system.

7. The communication system according to claim 6, and A hot water supply unit that supplies hot water to the bathtub. A hot water supply system.

8. The hot water supply system according to claim 7, further comprising a bathroom remote control that controls the hot water supply unit, and At least any one of the communication unit, the specifying unit, and the determination unit is provided in the bathroom remote control. The hot water supply system according to claim 7.

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