Water supply management system, water supply management method and program

Abstract

To provide a water supply management system that allows water supply business operators to easily obtain information on users experiencing water outage.SOLUTION: A water supply management system (1) comprises: acquisition means (terminal acquisition means 114) for acquiring an opening degree of a faucet and an amount of water coming out from the faucet, which are detected by a terminal device (100) provided on the faucet; and determination means (115) for determining water outage when a detected opening degree and a detected water amount do not correspond. The water supply management system (1) may comprise specifying means (15) for specifying a range where water outage has occurred based on water outage information obtained from a plurality of terminal devices (100).SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a water supply management system, a water supply management method, and a program.

Background Art

[0002] Conventionally, systems or devices for detecting abnormalities in water supply have been proposed. For example, Patent Document 1 discloses a communication mechanism that detects water leakage from a connection part between a faucet and a water pipe by providing an individual flow rate sensor that detects the usage flow rate for each faucet and a total flow rate sensor that detects the total usage flow rate, and comparing the sum of each usage flow rate with the total usage flow rate. Further, for example, Patent Document 2 discloses a pressurized water supply device in which a pressure detection unit is attached to a water supply pipe via a branch pipe or the like, and monitors whether a water cut-off state has occurred based on the detected pressure in the water supply pipe.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] Here, with the technologies of Patent Document ¹ or ², water utilities could not easily grasp information on users experiencing water cut-off conditions. For example, a large-scale configuration was required to detect water leakage or water cut-off states. Also, the range of users experiencing water leakage or water cut-off could not be identified, and there were cases where water utilities could not fully take necessary measures for restoration and the like.

[0005] In view of such circumstances, an object of the present disclosure is to provide a water supply management system, a water supply management method, and a program that enable water utilities to easily grasp information on users experiencing water cut-off conditions. [Means for solving the problem]

[0006] A water supply management system according to one embodiment of this disclosure is An acquisition means for acquiring the degree to which the water tap is opened and the amount of water dispensed from the water tap, as detected by a terminal device installed on the water tap, The system includes a determination means for determining a water outage when the detected opening degree and the detected water volume do not correspond.

[0007] A water supply management system according to one embodiment of this disclosure is An acquisition means for acquiring the degree to which the water tap is opened, as detected by a terminal device installed on the water tap, The system includes an output means that outputs information obtained from an information processing device when the aforementioned water tap is opened.

[0008] A water supply management method according to one embodiment of this disclosure is: A water management method implemented by a water management system, A step of obtaining the degree to which the water tap is opened, detected by a terminal device installed on the water tap, and the amount of water discharged from the water tap or the water pressure of the water discharged from the water tap, The method includes a step of determining a water outage if the detected opening degree does not correspond to the detected water volume or water pressure.

[0009] A program according to one embodiment of this disclosure is The processor in the water management system An acquisition means for acquiring the degree to which the water tap is opened, detected by a terminal device installed on the water tap, and the amount of water discharged from the water tap or the water pressure of the water discharged from the water tap, and This means functions as a determination mechanism for determining a water outage when the detected opening degree does not correspond to the detected water volume or water pressure. [Effects of the Invention]

[0010] According to this disclosure, it is possible to provide a water supply management system, a water supply management method, and a program that enable water operators to easily obtain information on users experiencing water outages. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a block diagram illustrating a water supply management system according to one embodiment of the present disclosure. [Figure 2] Figure 2 shows an example of the configuration of the water supply management system shown in Figure 1. [Figure 3] Figure 3 illustrates the procedures to be followed in the event of a water outage. [Figure 4] Figure 4 illustrates the treatment of abnormal water quality. [Modes for carrying out the invention]

[0012] Hereinafter, a water supply management system according to an embodiment of this disclosure will be described with reference to the drawings. In each drawing, the same or corresponding parts are denoted by the same reference numerals. In the description of this embodiment, the description of the same or corresponding parts will be omitted or simplified as appropriate.

[0013] (Water supply management system) FIG. 1 is a block diagram of a water supply management system 1 according to the present embodiment. FIG. 2 is a diagram showing a configuration example of the water supply management system 1 in FIG. 1. The water supply management system 1 is a system for managing the quality and state of a water supply used by a water utility that supplies and treats water and users who use the water. The water supply management system 1 includes a terminal device 100 provided on a water tap and an information processing device 10 that can communicate with the terminal device 100 via a network 40. Here, the water tap may be any object that a user operates when using water. As an example, it is a faucet for a water supply, but it is not limited to this. The water tap includes various devices for discharging, stopping, and adjusting the flow rate of water used in facilities that use water such as agricultural water, industrial water, and domestic water. The network 40 is, for example, the Internet. As shown in FIG. 2, there may be a plurality of terminal devices 100. When each of the plurality of terminal devices 100 is described separately, it may be denoted as terminal device 100A and terminal device 100B. However, since the components of the terminal device 100 are the same, only one terminal device 100 is shown in FIG. 1.

[0014] (Information Processing Device) The information processing device 10 has the following hardware configuration. The information processing device 10 includes a communication unit 11, a storage unit 12, a control unit 13, an input unit 20, and a display unit 21. The information processing device 10 may be a computer arranged by a water utility.

[0015] The communication unit 11 is one or more communication interfaces that communicate with the terminal device 100 via the network 40. The communication unit 11 can transmit and receive various data to and from the terminal device 100. The communication unit 11 also includes a communication interface that communicates with the input unit 20 and the display unit 21. The communication interface that communicates with the input unit 20 and the display unit 21 may be, for example, USB or the like.

[0016] The storage unit 12 is one or more memories. The memory can be, for example, a semiconductor memory, a magnetic memory, or an optical memory, etc., but is not limited to these and can be any memory. The storage unit 12 is, for example, built into the information processing device 10, but it is also possible to be externally connected to the information processing device 10 via an arbitrary interface.

[0017] The control unit 13 is one or more processors. The processor can be, for example, a general-purpose processor or a dedicated processor specialized for specific processing, but is not limited to these and can be any processor. The control unit 13 controls the overall operation of the information processing device 10.

[0018] The information processing device 10 has the following software configuration. One or more programs used for controlling the operation of the information processing device 10 are stored in the storage unit 12. When the program stored in the storage unit 12 is read by the control unit 13, the control unit 13 functions as acquisition means 14, specification means 15, notification means 16, and output means 17.

[0019] The outline of each means is as follows. The acquisition means 14 acquires information (such as water cut-off information) regarding the quality and state of the water supply transmitted from the terminal device 100. Also, the acquisition means 14 acquires, for example, a command to start or end processing from the system administrator based on an operation of the input unit 20. Further, the acquisition means 14 acquires map information and voice information used for notification from the storage unit 12. The specification means 15 specifies the range where the water cut-off has occurred based on the water cut-off information acquired from a plurality of terminal devices 100. The specification means 15 executes, for example, image processing to show the range where the water cut-off has occurred on the map using the map information. The notification means 16 generates notifications to the terminal device 100, such as indicating that the water supply is cut off and that there is water quality abnormality. The notification means 16 executes, for example, voice processing to generate voice data for notification according to the situation using the voice information. The output means 17 outputs the map generated by the specification means 15 through image processing to the display unit 21. Also, the output means 17 outputs the voice data generated by the notification means 16 through voice processing to the terminal device 100.

[0020] The input unit 20 is an interface that accepts operations for the information processing device 10. The input unit 20 may be configured as hardware such as a keyboard and mouse. For example, a system administrator at a water utility company may use the input unit 20 to start a process on the information processing device 10 to identify the area of ​​the water outage.

[0021] The display unit 21 is an interface for displaying information from the information processing device 10. The display unit 21 may be a display device such as a liquid crystal display or an OEL (organic electro-luminescence) display in terms of hardware configuration. For example, a map showing the water outage area may be displayed on the display unit 21 so that a system administrator at a water utility company can check it.

[0022] (Terminal device) The terminal device 100 has the following hardware configuration. The terminal device 100 comprises a terminal communication unit 111, a terminal storage unit 112, a terminal control unit 113, a terminal detection unit 120, and a terminal input / output unit 121. The terminal device 100 is installed on a water tap, but it may be configured to be attached to a water tap already installed in the building, or it may be manufactured as an integrated unit with the water tap.

[0023] The terminal communication unit 111 is the communication unit on the terminal device 100 side and has the same configuration as the communication unit 11 of the information processing device 10.

[0024] The terminal storage unit 112 is a storage unit on the terminal device 100 side and has the same configuration as the storage unit 12 of the information processing device 10. The terminal storage unit 112 may temporarily store voice data transmitted from the information processing device 10 (for example, notifications that there is a water outage or that there is a water quality abnormality).

[0025] The terminal control unit 113 is one or more processors. The processors are, for example, general-purpose processors or dedicated processors specialized for specific processing, but are not limited to these and can be any processor. The terminal control unit 113 controls the overall operation of the terminal device 100.

[0026] The terminal device 100 has the following software configuration. One or more programs used to control the operation of the terminal device 100 are stored in the terminal storage unit 112. When a program stored in the terminal storage unit 112 is read by the terminal control unit 113, the terminal control unit 113 is made to function as a terminal acquisition means 114, a determination means 115, and a terminal output means 116.

[0027] The outlines of each means are as follows: The terminal acquisition means 114 acquires information regarding the state of the water tap detected by the terminal detection unit 120. The information regarding the state of the water tap includes at least the degree to which the water tap is opened and the amount of water dispensed from the tap or the water pressure of the water dispensed from the tap. The terminal acquisition means 114 also acquires audio data from the information processing device 10 and temporarily stores it in the terminal storage unit 112. The determination means 115 determines that there is a water outage if the detected degree of opening does not correspond to the detected amount of water or water pressure. The terminal output means 116 outputs information regarding the quality and state of the water supply to the information processing device 10. For example, if the determination means 115 determines that there is a water outage, the terminal output means 116 outputs water outage information to the information processing device 10. The terminal output means 116 may have the terminal input / output unit 121 notify an audio message when the water tap is opened and the terminal storage unit 112 has temporarily stored audio data from the information processing device 10.

[0028] The terminal detection unit 120 detects the state of the water tap. The terminal detection unit 120 is configured as a hardware unit comprising at least an opening sensor and a flow rate sensor. The opening sensor measures the degree to which the water tap is opened and outputs a detection value corresponding to the opening degree. The opening sensor may be implemented as a solenoid valve, for example. The flow rate sensor measures the flow rate of water flowing from the water tap and outputs a detection value corresponding to the flow rate. For water taps used for drinking water, it is preferable to use a flow rate sensor that can measure the flow rate without contacting the water, and may be implemented as a non-contact ultrasonic flow meter, for example. The terminal detection unit 120 may further include a motion sensor to detect whether a user is near the water tap.

[0029] The terminal input / output unit 121 is an interface for inputting and outputting audio to and from the user of the water tap. The terminal input / output unit 121 may be configured as a hardware unit that includes, for example, a microphone and a speaker. Here, as an alternative configuration example, the terminal input / output unit 121 may be configured as a terminal output unit that only provides voice notifications, without including the microphone.

[0030] (Water supply disruption) The water supply management system 1 according to this embodiment performs a water supply management method. As an example of the water supply management method, the water supply management system 1 processes information so that water operators can share information about water outages among users. The processing in the water supply management method may be executed by loading a program by a processor provided in the water supply management system 1. Figure 3 is a diagram illustrating the processing in the case of a water outage. In the example in Figure 3, it is assumed that terminal devices 100A and 100B are provided at the water taps of different users located in a specific area where a water outage has occurred.

[0031] The terminal device 100A first measures the flow rate. The flow rate sensor of the terminal detection unit 120 measures the flow rate (volume) of water flowing from the water tap. The terminal device 100A also measures the opening degree. The opening degree sensor of the terminal detection unit 120 measures the degree to which the water tap is opened. Here, the flow rate measurement and opening degree measurement may be performed when the user opens the water tap, or they may be performed regardless of whether the user opens the tap. Here, water pressure measurement may be performed instead of flow rate measurement. The terminal detection unit 120 may be equipped with a pressure sensor instead of a flow rate sensor and measure the water pressure (water pressure) coming out of the water tap. For water taps used for drinking water, it is preferable to use a pressure sensor that can measure pressure without contact with water, or a pressure sensor whose water contact part has excellent corrosion resistance.

[0032] Next, the terminal device 100A performs a water outage determination. More specifically, in the terminal control unit 113 of the terminal device 100A, the terminal acquisition means 114 acquires the detected opening degree and water volume. The determination means 115 determines that there is a water outage if there is no water volume despite the water tap being open, as the opening degree and water volume do not correspond. It may also determine that there is a water outage if the water volume is not zero but is low relative to the opening degree, as the opening degree and water volume do not correspond. In this case, the water outage state may be distinguished and determined according to the degree of low water volume. Furthermore, if there is a change in water volume despite no change in opening degree (for example, if the water volume decreases during use), it may determine that there is a water outage as the opening degree and water volume do not correspond. Here, if water pressure measurement is performed instead of flow rate measurement, the terminal acquisition means 114 acquires the detected opening degree and water pressure. The determination means 115 determines that there is a water outage if there is no correspondence between the opening degree and water pressure, as the water pressure is zero despite the water tap being open. Furthermore, even if the water pressure is not zero but is low relative to the opening degree, a water outage may be determined by considering that the opening degree and water pressure do not correspond. In this case, the water outage state may be distinguished and determined according to the degree of low water pressure. Moreover, even if there is no change in the opening degree, if there is a change in water pressure (for example, if the water pressure drops during use), a water outage may be determined by considering that the opening degree and water pressure do not correspond.

[0033] If a water outage is detected, the terminal device 100A issues a water outage notification. More specifically, in the terminal control unit 113 of the terminal device 100A, the determination means 115 generates water outage information indicating that there is a water outage. Here, the water outage information may include location information of the water tap where the terminal device 100A is installed. The location information may be obtained by known technology such as GPS (Global Positioning System). Furthermore, if the map information held by the information processing device 10 has already been associated with the terminal device 100A and its location information, the water outage information may be configured to include identification information of the terminal device 100A instead of location information. The terminal output means 116 outputs the water outage information to the information processing device 10.

[0034] Similar to terminal device 100A, terminal device 100B also performs flow rate measurement, opening degree measurement, and water outage determination processing, and outputs water outage information to the information processing device 10. In addition, other terminal devices 100 located in the specific area where the water outage occurred also output water outage information to the information processing device 10.

[0035] The information processing device 10 performs a process to identify the range of water outages based on water outage information acquired from multiple terminal devices 100. More specifically, in the control unit 13 of the information processing device 10, the acquisition means 14 acquires water outage information transmitted from the terminal devices 100. The acquisition means 14 also acquires map information from the storage unit 12. The identification means 15 extracts location information of water taps where water outages have occurred from the water outage information. The identification means 15 maps the locations of water outages on a map, identifies the area containing water taps where water outages have occurred as the range of water outages, and performs image processing so that the range of water outages is indicated by the display color. The identification means 15 may display the range of water outages, for example, by showing the locations of water taps with water outages in black and the locations of water taps that are not affected in white on the map. In this case, the identification means 15 may show the locations of water taps for which information is unavailable and it is unclear whether there is a water outage in gray. The identification means 15 may identify an area that includes, for example, all water taps indicated in black, white, and gray, based on the locations of these taps, as an area with a high probability of water outage. Alternatively, the identification means 15 may identify an area that includes water taps indicated in gray in addition to black, as an area with a possibility of water outage. By identifying the area of ​​water outage, water operators can narrow down the possible locations of the cause. Therefore, it becomes possible to restore water from the outage earlier compared to conventional on-site survey methods. Here, if the identification means 15 includes information on the water supply network as map information, it may identify an area on the water supply network that is affected in the same way as the taps that have experienced a water outage as the area of ​​water outage. The identification means 15 may treat the taps included in the area thus identified as the area of ​​water outage.

[0036] Furthermore, the information processing device 10 can provide voice guidance notifications to users of water taps within the water outage area. In the control unit 13 of the information processing device 10, the acquisition means 14 acquires voice information from the storage unit 12. The notification means 16 generates voice guidance notifications to the terminal device 100 indicating that there is a water outage and according to the restoration status. For example, these notifications may each be prepared as voice information in the storage unit 12, and the notification means 16 may perform a process to select the appropriate voice information according to the situation. The output means 17 outputs the voice data of these notifications to the terminal device 100. Here, the voice guidance may be as follows: For example, during a water outage, the user may be informed that there is a water outage, the cause of the outage, the expected restoration time, and the location of the nearest water supply station. Also, immediately before the restoration of water from an outage, a message may be conveyed urging the user to close the water tap. Also, immediately after the restoration of water from an outage, a message may be conveyed requesting the disposal of turbid water.

[0037] (Notification processing) Here, the water utility operator can notify users not only in the event of a water outage, but also, for example, in the event of a water quality abnormality, using the water management system 1 according to this embodiment. However, if a notification is made when the user is not present, the information will not reach the user. The water management system 1 can ensure that the user is aware of the notification content by the method described below. The notification process is also an example of processing in the water management method executed by the water management system 1, and may be executed by loading a program by the processor provided in the water management system 1.

[0038] Figure 4 illustrates the process for handling water quality abnormalities. The information processing device 10 first performs the process of detecting water quality abnormalities. For example, when the system administrator of a water business operator inputs the date and time of construction and the target area by operating the input unit 20, the information processing device 10 may detect the water quality abnormality and start the process of notifying the water quality abnormality.

[0039] The information processing device 10 provides voice guidance to users of water taps in the construction area to notify them of abnormal water quality. In the control unit 13 of the information processing device 10, the acquisition means 14 acquires voice information from the storage unit 12. The notification means 16 generates a notification to the terminal device 100 stating that there is an abnormal water quality or a request to dispose of turbid water. The output means 17 outputs the generated voice data of the notification to the terminal device 100.

[0040] The terminal device 100 acquires audio data from the information processing device 10. More specifically, in the terminal control unit 113 of the terminal device 100, the terminal acquisition means 114 acquires audio data from the information processing device 10 and temporarily stores it in the terminal storage unit 112.

[0041] The terminal device 100 detects when a user opens a water tap, confirms the presence of a user, and then executes a terminal notification, outputting information acquired from the information processing device 10. More specifically, when the opening degree sensor of the terminal detection unit 120 detects that the water tap has been opened, the terminal device 100 determines that a user is present. In the terminal control unit 113 of the terminal device 100, the terminal output means 116 outputs the content of the audio data read from the terminal storage unit 112 through the speaker. Through this process, the water management system 1 can ensure that the user is reliably aware of the notification content.

[0042] If the terminal input / output unit 121 is equipped with a microphone, the terminal device 100 can transmit the user's voice response to the notification (for example, "It was helpful") to the information processing device 10. By receiving feedback of the user's voice, the water provider can reflect the user's response in the next notification.

[0043] Here, Figure 4 illustrates a notification in the event of a water quality abnormality, but the same applies to notifications during water outages. In other words, the water management system 1 can notify users that there is a water outage when a water tap is opened within the area affected by the outage. At this time, users of water taps that have been notified of the water outage to the information processing device 10 are more likely to be aware that there is a water outage than users of water taps that have not been notified of the water outage. Therefore, the water management system 1 may differentiate the notification of a water outage (for example, the content or manner of notification) depending on whether or not a notification of the water outage has been sent. Furthermore, the water operator may provide voice notifications regarding water quality. For example, if the terminal detection unit 120 of the terminal device 100 has a water quality sensor, the water quality detection result can be transmitted from the terminal device 100 to the information processing device 10, and the water operator may make a judgment about the water quality. The water quality judgment result (for example, "Water quality is good") may then be provided to the user via voice notification. The water operator may also provide voice notifications regarding freeze prevention. For example, if the terminal detection unit 120 of the terminal device 100 has a temperature sensor, the water temperature detection result can be transmitted from the terminal device 100 to the information processing device 10, and the water business operator can make a determination about the possibility of freezing. If there is a risk of freezing, a voice notification can be sent to the user prompting them to slightly open the faucet to prevent freezing. Also, if the terminal detection unit 120 is equipped with a motion sensor, the terminal device 100 can determine that the user is near the water tap based on the detection result of the motion sensor.

[0044] As described above, the water supply management system 1, water supply management method, and program according to this embodiment, with the above configuration, allow water service providers to easily obtain information on users experiencing water outages. Therefore, for example, it becomes possible to restore water supply from outages as quickly as possible, which also benefits users.

[0045] While embodiments of this disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art will find it easy to make various modifications or alterations based on this disclosure. Therefore, it should be noted that these modifications or alterations are included within the scope of this disclosure. For example, the functions included in each component or step can be rearranged in a logically consistent manner, and multiple components or steps can be combined into one or divided. Embodiments relating to this disclosure can also be realized as programs executed by a processor in the device or as storage media recording such programs. These should also be understood to be included within the scope of this disclosure.

[0046] For example, the configuration of the water supply management system 1 is not limited to that illustrated in Figure 1. As another example, the determination means 115 for determining a water outage may be included in the control unit 13 of the information processing device 10, rather than in the terminal control unit 113 of the terminal device 100. In this configuration, the acquisition means 14 acquires information regarding the state of the water tap detected by the terminal detection unit 120 via the network 40. In other words, some functions of the terminal acquisition means 114 are performed by the acquisition means 14.

[0047] Furthermore, the water outage processing and notification processing are not limited to those described in the above embodiment. For example, if the determination means 115 determines a water outage based on information from a user's terminal device 100, it may make a final determination of the water outage based on information from another user's terminal device 100. For example, if the determination means 115 receives information from a user's terminal device 100 indicating a water outage, but does not receive information indicating a water outage from other nearby terminal devices 100, it can determine that the water outage is occurring only at that user's equipment. In this case, the information processing device 10 may notify the user experiencing the water outage that the problem is on their end and not a water outage. Such processing allows for the early identification of equipment failure on the user's side, which is beneficial to the user. It also benefits the water service provider, as it allows them to immediately distinguish between a specific user's failure and a water outage, enabling them to prioritize inquiries with a high impact and importance (such as water outages). [Explanation of symbols]

[0048] 1. Water supply management system 10 Information Processing Devices 11 Communications Department 12 Storage section 13 Control Unit 14 Acquisition method 15 Specific means 16 Means of Notification 17 Output means 20 Input section 21 Display section 100, 100A, 100B terminal equipment 111 Terminal Communications Department 112 Terminal Storage Unit 113 Terminal Control Unit 114 Terminal acquisition method 115 Judgment means 116 Terminal output means 120 Terminal detection unit 121 Terminal Input / Output Section

Claims

1. Multiple terminal devices provided at each of the multiple water taps, The water business operator has an information processing device that receives information via the aforementioned multiple terminal devices and network, Each of the aforementioned multiple terminal devices detects water tap status information, including the degree to which the water tap is opened and the amount of water dispensed from the water tap or the water pressure of the water dispensed from the water tap. If the degree to which the water tap is opened and the amount of water or water pressure in the water tap status information do not correspond, the terminal device determines that the water tap is shut off. If the water shut off is determined, the terminal device transmits the water shutoff information to the information processing device via the network. The information processing device is a water management system that identifies the area where the water outage occurred, including the location of the water tap where the water outage occurred, based on the water outage information received from the plurality of terminal devices.

2. The water supply management system according to claim 1, further comprising a notification means for notifying that there is a water outage when the water tap is opened in the area where the water outage has occurred.

3. A water management method implemented by a water management system, The aforementioned water supply management system is Multiple terminal devices are provided at each of the multiple water taps, The water business operator has an information processing device that receives information via the aforementioned multiple terminal devices and network, Each of the aforementioned multiple terminal devices detects the degree to which the water tap is opened and water tap status information including the amount of water dispensed from the water tap or the water pressure of the water dispensed from the water tap, determines that the water tap is shut off if the degree of opening and the amount of water or water pressure in the water tap status information do not correspond, and transmits the water shutoff information to the information processing device via the network when the water shutoff is determined. A water supply management method comprising: the information processing device identifying the area where the water outage occurred, including the location of the water tap where the water outage occurred, based on water outage information received from the plurality of terminal devices.

4. A water supply management system having a plurality of terminal devices provided at each of a plurality of water taps, and an information processing device provided to a water business operator that receives information from the plurality of terminal devices via a network, the information processing device having a processor, The aforementioned multiple terminal devices detect the degree to which the water tap is opened and the amount of water dispensed from the tap or the water pressure of the water dispensed from the tap, determine that the water tap is shut off if the detected degree of opening does not correspond to the amount of water or the water pressure, and receive water shutoff information transmitted via the network when the water shutoff is determined. A program that performs the following steps: Based on water outage information received from the aforementioned multiple terminal devices, it identifies the area where the water outage occurred, including the location of the water tap where the outage occurred.

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