Safety confirmation server, drainage data acquisition device, safety confirmation method, and safety confirmation program

Abstract

This disclosure enables the provision of a safety confirmation server, a drainage data acquisition device, a safety confirmation method, and a safety confirmation program that enable the confirmation of the safety of people at home during a disaster. [Solution] The safety confirmation server according to this disclosure comprises an acquisition unit that acquires drainage data related to drainage from households, an estimation unit that generates estimation results that estimate the living conditions of households based on the drainage data, and a determination unit that determines the safety status of people living in the household based on the estimation results.

Description

Technical Field

[0001] The present disclosure relates to a safety confirmation server, a wastewater data acquisition device, a safety confirmation method, and a safety confirmation program.

Background Art

[0002] In the event of a disaster, prompt confirmation of the safety of disaster victims is required. However, during a disaster, infrastructure such as electric power, communications, and water supply may be damaged and cease to function. As a result, safety confirmation using, for example, a smartphone application may become unavailable due to communication failures or dead batteries. This poses the problem that it is difficult to confirm the safety of people evacuating outside of shelters, such as at their own homes, when infrastructure is down.

[0003] As a means of remotely grasping the status of a person staying at home, for example, a monitoring system using a water service smart meter has been proposed (for example, Patent Document 1). The monitoring system disclosed in Patent Document 1 detects an abnormality of a person staying at home based on water usage, and notifies the outside of the abnormality.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of Invention

Problems to be Solved by the Invention

[0005] When infrastructure such as electric power, communications, and water supply stops during a disaster, the flow of supplied water may be cut off. For this reason, systems for monitoring the flow of supplied water as shown in Patent Document 1 have limited functions. Accordingly, there is a risk that the system for monitoring the flow of supplied water will not function sufficiently as a means for confirming the safety of people staying at home in disaster support.

[0006] This disclosure aims to provide a safety confirmation server, a drainage data acquisition device, a safety confirmation method, and a safety confirmation program that enable the confirmation of the safety of people at home during a disaster. [Means for solving the problem]

[0007] The safety confirmation server relating to this disclosure comprises an acquisition unit that acquires drainage data related to drainage from a household, an estimation unit that generates estimation results that estimate the living conditions of the household based on the drainage data, and a determination unit that determines the safety status of the people living in the household based on the estimation results.

[0008] The wastewater data acquisition device according to this disclosure is a wastewater data acquisition device installed in a home, comprising: a sensor unit installed in the drainpipe of the home and acquiring wastewater data related to wastewater; a communication unit that transmits the wastewater data to a server; a power management unit that manages the power necessary for the operation of the wastewater data acquisition device; and a power generation unit installed in the drainpipe and generating electricity using the energy of the wastewater, wherein the power management unit causes the power generation unit to start generating electricity when it detects a cessation of power supply from an external power source.

[0009] The method for confirming the safety of persons in the household described herein involves acquiring drainage data related to wastewater from a household, generating estimation results that estimate the living conditions of the household based on the drainage data, and determining the safety of persons in the household based on the estimation results.

[0010] The safety confirmation program described herein causes a computer to perform the following processes: acquiring drainage data related to wastewater from a household; generating estimation results that estimate the living conditions of the household based on the drainage data; and determining the safety status of the people living in the household based on the estimation results. [Effects of the Invention]

[0011] This disclosure enables the provision of a safety confirmation server, a drainage data acquisition device, a safety confirmation method, and a safety confirmation program that enable the confirmation of the safety of people at home during a disaster. [Brief explanation of the drawing]

[0012] [Figure 1] This figure shows an example of the configuration of the safety confirmation server related to this disclosure. [Figure 2] This figure shows an example of the configuration of the safety confirmation system related to this disclosure. [Figure 3] This flowchart shows an example of how the wastewater data acquisition device related to this disclosure operates. [Figure 4] This flowchart shows an example of a method for confirming the safety of individuals using the safety confirmation server related to this disclosure. [Figure 5] This figure shows another example of the configuration of the safety confirmation system related to this disclosure. [Figure 6] This flowchart shows another example of a safety confirmation method using the safety confirmation server related to this disclosure. [Figure 7] This is a block diagram showing an example of the hardware configuration for realizing safety confirmation in the safety confirmation system related to this disclosure. [Modes for carrying out the invention]

[0013] (Embodiment 1) <Configuration of the safety confirmation server> The following describes an example of the configuration of a safety confirmation server using Figure 1. Figure 1 is a diagram showing an example of the configuration of a safety confirmation server related to this disclosure. The safety confirmation server 20 related to this disclosure is a server that can confirm the safety of people at home in a household in an area where infrastructure such as electricity, communications, and water has stopped during a disaster. As shown in Figure 1, the safety confirmation server 20 comprises an acquisition unit 22, an estimation unit 23, and a determination unit 25.

[0014] The acquisition unit 22 acquires wastewater data related to wastewater from households. This wastewater data includes, for example, the flow rate of wastewater, the quality of wastewater, and the temperature of wastewater.

[0015] The estimation unit 23 generates an estimation result obtained by estimating the living situation of a household based on wastewater data. The estimation unit 23 generates, as the estimation result, for example, the number of people staying at home in the household, the hygiene status of the people staying at home, the water shortage status of the household, and the like. Note that the estimation unit 23 may be a trained model for causing a computer to function so as to estimate the living situation of a household based on input wastewater data and output an estimation result.

[0016] The determination unit 25 determines the safety of the people staying at home in the household based on the estimation result generated by the estimation unit 23. Specifically, the determination unit 25 determines whether the household is in a normal state or an abnormal state. Note that the determination unit 25 may evaluate the degree of abnormality in a plurality of stages according to the estimation result such as the hygiene status of the people staying at home and the water shortage status of the household, and determine the abnormality level of the household.

[0017] As described above, the safety confirmation server 20 acquires wastewater data related to wastewater from a household, and estimates the living situation of the household based on the wastewater data. Then, the safety confirmation server 20 determines the safety of the people staying at home in the household based on the estimation result. Even if the water supply is stopped at the time of a disaster, as long as people are present in the household and continue their lives, wastewater using alternative means such as drinking water, reserved water, rainwater, and water supply vehicles may be generated. Therefore, by utilizing the wastewater data related to wastewater, the safety confirmation server 20 can confirm the safety of people staying at home even in an area where infrastructure has stopped at the time of a disaster.

[0018] (Embodiment 2) <Configuration of Safety Confirmation System> Hereinafter, an example of a safety confirmation system will be described using Figure 2. Figure 2 is a diagram illustrating an example of the configuration of the safety confirmation system according to the present disclosure. As shown in Figure 2, the safety confirmation system 1 includes a wastewater data acquisition device 10 and a safety confirmation server 20. The wastewater data acquisition device 10 and the safety confirmation server 20 are interconnected in a state that enables information transmission via a network NW. The network NW includes wireless lines via base stations and the like, such as the Internet, LAN (Local Area Network), and WAN (Wide Area Network). The network NW may be wired or wireless as long as it is connected in a state that enables information transmission.

[0019] The wastewater data acquisition device 10 is installed in a household, and is a device that acquires wastewater data related to wastewater from the household. As shown in Figure 2, the wastewater data acquisition device 10 includes a communication unit 11, one or a plurality of sensor units 12, a power generation unit 13, a battery unit 14, and a power management unit 15.

[0020] The communication unit 11 transmits the wastewater data acquired by the sensor unit 12, which will be described later, to the safety confirmation server 20 at a predetermined frequency.

[0021] The sensor unit 12 is provided in a household wastewater pipe, and acquires wastewater data related to wastewater. The sensor unit 12 may be provided for each water supply facility such as a toilet, a washroom, a bathtub, and a kitchen, and may acquire wastewater data for each respective water supply facility. The sensor unit 12 includes, for example, one or more of a flow rate sensor, a water quality sensor, a temperature sensor, and the like. The wastewater data acquired by the sensor unit 12 at least includes the flow rate of the wastewater. The wastewater data may include, in addition to the flow rate of the wastewater, for example, the quality of the wastewater, the temperature of the wastewater, and the like.

[0022] The power generation unit 13 is provided in the wastewater pipe together with the sensor unit 12, and generates power using the energy of the wastewater. Examples of the power generation method by the power generation unit 13 include a method using the flowing force of wastewater, a method using the temperature difference of wastewater, and the like. The power generated by the power generation unit 13 is stored in the battery unit 14.

[0023] The battery unit 14 stores the power used to operate the drainage data acquisition device 10. The battery unit 14 stores the power generated by the power generation unit 13 and the power supplied from an external power source (not shown).

[0024] The power management unit 15 manages the power required for the operation of the drainage data acquisition device 10. More specifically, the power management unit 15 controls the distribution of power to the communication unit 11, the sensor unit 12, and the battery unit 14.

[0025] The power management unit 15 controls the switching of the operating mode of the drainage data acquisition device 10. There are two operating modes: normal mode and low power mode. In normal mode, the drainage data acquisition device 10 is operated using power supplied from an external power source (not shown). On the other hand, in low power mode, the drainage data acquisition device 10 is operated using power stored in the battery unit 14. In low power mode, the power management unit 15 controls the operation of the communication unit 11 and the sensor unit 12 to reduce power consumption, such as limiting the operating frequency of the communication unit 11 and the sensor unit 12. For example, the power management unit 15 changes the frequency of sending drainage data to the safety confirmation server 20 based on the amount of power stored in the battery unit 14. In low power mode, if the amount of power stored in the battery unit 14 falls below a threshold, the communication unit 11 sends a signal to the safety confirmation server 20 indicating that there is a high possibility that communication will stop.

[0026] When the power management unit 15 detects a cessation of power supply from an external power source (not shown), i.e., a power outage, it switches the operating mode of the drainage data acquisition device 10 from normal mode to low-power mode. This allows the drainage data acquisition device 10 to maintain minimum operation even under conditions of power outages or unstable power supply during a disaster, enabling it to continue acquiring drainage data and communicating with the safety confirmation server 20. Furthermore, when the power management unit 15 switches to low-power mode, it starts power generation by the power generation unit 13. By using the power generated by the power generation unit 13 to charge the battery unit 14, the drainage data acquisition device 10 ensures that it has enough power to maintain operation.

[0027] The safety confirmation server 20 is a server that can confirm the safety of people at home in areas where infrastructure such as electricity, communications, and water supply is shut down, for example, during a disaster. As shown in Figure 2, the safety confirmation server 20 comprises a communication unit 21, an acquisition unit 22, an estimation unit 23, a storage unit 24, and a determination unit 25.

[0028] The communications unit 21 receives drainage data from each household. The communications unit 21 may also transmit a rescue request signal to the household, based on the determination result from the determination unit 25, to an external server such as a local government server or a Self-Defense Forces server.

[0029] The acquisition unit 22 acquires wastewater data for each household via the communication unit 21. The acquisition unit 22 then links the acquired wastewater data with the time information on which the wastewater data was acquired and outputs it to the storage unit 24.

[0030] The estimation unit 23 generates estimation results that estimate the living conditions of the household based on the wastewater data. More specifically, the estimation unit 23 generates estimation results by comparing standard data set based on wastewater data acquired daily by the acquisition unit 22 with newly acquired wastewater data by the acquisition unit 22.

[0031] Here, the reference data is the drainage data for each household's water supply equipment under normal living conditions, i.e., during non-disaster situations. The memory unit 24, described later, stores historical data for each household, which is accumulated chronologically, including the frequency of use, amount of drainage, quality of drainage, and temperature of drainage equipment. The estimation unit 23 analyzes the historical data stored in the memory unit 24 and generates reference data for each household's water supply equipment.

[0032] The estimation unit 23 generates estimation results such as the number of people at home, the sanitary status of those at home, and the state of water shortage in the household. The number of people at home is estimated by comparing the amount of wastewater from toilets and bathtubs with standard data for that amount of wastewater. The sanitary status of those at home is estimated by comparing the quality of toilet wastewater with standard data for that wastewater quality. The state of water shortage in the household is estimated by comparing the amount of wastewater from each drainage facility with standard data for that amount of wastewater. Note that the estimation results described above are examples and are not limited to these.

[0033] The estimation unit 23 may be a pre-trained model that causes the computer to function in order to estimate the household's living conditions based on the input wastewater data and output the estimation result. This pre-trained model can estimate the current living conditions by comparing them with normal living conditions each time new wastewater data is input. Furthermore, this pre-trained model continuously accumulates new wastewater data and updates the pre-trained model.

[0034] The storage unit 24 stores the wastewater data acquired by the acquisition unit 22 and the reference data. The storage unit 24 stores the wastewater data acquired by the acquisition unit 22 for each household, such as the frequency of use of each household's wastewater equipment, the amount of wastewater, the quality of the wastewater, and the temperature of the wastewater, in chronological order, and stores it as historical data. As described above, the estimation unit 23 generates the reference data from the historical data.

[0035] Furthermore, the memory unit 24 may also store wastewater data from previous instances where the determination unit 25 determined an abnormality. This allows the estimation unit 23 to estimate the living situation more quickly and accurately by comparing the newly acquired wastewater data from the acquisition unit 22 with the reference data and the wastewater data from previous instances where the determination unit 25 determined an abnormality.

[0036] The determination unit 25 determines the safety of the people in the household based on the estimation results generated by the estimation unit 23. Specifically, the determination unit 25 determines whether the household is in a normal state or an abnormal state. The determination unit 25 may also determine the degree of abnormality, such as a caution level, a warning level, or an emergency level, depending on the estimation results, such as the sanitary condition of the people in the household or the water shortage status of the household. Furthermore, if the determination unit 25 determines that there is an abnormal state in a household, it may generate a rescue request signal and transmit it via the communication unit 21 to a local government server or a Self-Defense Forces server.

[0037] <Methods for confirming safety> Next, an example of a safety confirmation method will be explained using Figures 3 and 4. Figure 3 is a flowchart showing an example of the operation method of the wastewater data acquisition device related to this disclosure. Figure 4 is a flowchart showing an example of a safety confirmation method using the safety confirmation server related to this disclosure.

[0038] The operation method of the wastewater data acquisition device 10 will be explained using Figure 3. First, the power management unit 15 checks whether or not power is being supplied from an external power source (not shown) (step S101). If no power supply interruption is detected (step S101: NO), the power management unit 15 operates the drainage data acquisition device 10 in normal mode (step S108). In normal mode (step S108), the drainage data acquisition device 10 acquires drainage data at a predetermined frequency and transmits the acquired drainage data to the safety confirmation server 20.

[0039] On the other hand, if a power supply interruption is detected (step S101: YES), the power management unit 15 switches the drainage data acquisition device 10 from normal mode to low power mode (step S102). Then, the power management unit 15 starts the power generation unit 13, and the power generation unit 13 starts generating power (step S103).

[0040] Next, the power management unit 15 checks the amount of power stored in the battery unit 14 (step S104). If the amount of power stored in the battery unit 14 is below a threshold (step S104: YES), the power management unit 15 changes the frequency at which the communication unit 11 communicates with the safety confirmation server 20 based on the amount of power stored in the battery unit 14 (step S105). Also, when the communication frequency is changed, the communication unit 11 sends a signal to the safety confirmation server 20 indicating that there is a high possibility that communication will stop.

[0041] Next, the power management unit 15 checks whether power is being supplied from an external power source (not shown) (step S106). Step S106 is also executed if the amount of power stored in the battery unit 14 is greater than a threshold (step S104: NO). If power supply from an external power source (not shown) is restored (step S106: YES), the power management unit 15 switches the drainage data acquisition device 10 from low power mode to normal mode (step S107). Then, in normal mode (step S108), the drainage data acquisition device 10 acquires drainage data at a predetermined frequency and transmits the acquired drainage data to the safety confirmation server 20. On the other hand, if the power supply remains interrupted (step S106: NO), the power management unit 15 executes step S104.

[0042] Next, Figure 4 will be used to explain the safety confirmation method used by the safety confirmation server 20. The flowchart shown in Figure 4 is triggered when the communication unit 21 receives drainage data from the drainage data acquisition device 10.

[0043] First, the acquisition unit 22 acquires drainage data for each household from the drainage data acquisition device 10 via the communication unit 21 (step S201). The acquisition unit 22 links the acquired drainage data with the time information of when the drainage data was acquired and outputs it to the storage unit 24.

[0044] Next, the estimation unit 23 generates an estimation result that estimates the living conditions of the household based on the wastewater data acquired by the acquisition unit 22 (step S202). More specifically, the estimation unit 23 generates an estimation result by comparing the newly acquired wastewater data with reference data set by the acquisition unit 22 based on the wastewater data acquired on a daily basis.

[0045] Next, the determination unit 25 determines the safety of the people living in the household based on the estimation results generated by the estimation unit 23 (step S203). Specifically, the determination unit 25 determines whether the household is in a normal state or an abnormal state. The determination unit 25 may also determine the degree of abnormality, such as a caution level, a warning level, or an emergency level, depending on the estimation results, such as the sanitary condition of the people living in the household or the water shortage status of the household.

[0046] If the system determines that there is an abnormal situation at home (Step S204: YES), the determination unit 25 generates a rescue request signal and transmits it via the communication unit 21 to a local government server, a Self-Defense Forces server, etc. (Step S205).

[0047] On the other hand, if the determination unit 25 determines that the household is in a normal state (step S204: NO), the estimation unit 23 updates the reference data using the wastewater data acquired in step S201 (step S206). If the estimation unit 23 is using a pre-trained model, the estimation unit 23 retrains using the wastewater data acquired in step S201.

[0048] In summary, Safety Confirmation System 1 acquires drainage data related to wastewater from households and estimates the living conditions of households based on this data. Based on the estimation results, Safety Confirmation System 1 determines the safety of the people living in the household. Even if the water supply is cut off during a disaster, as long as people are present in the household and continue to live there, there is a possibility of wastewater being generated using alternative means such as drinking water, stored water, rainwater, or water tankers. Therefore, by utilizing drainage data related to wastewater, Safety Confirmation System 1 can confirm the safety of people living in the household even in areas where infrastructure has been shut down during a disaster.

[0049] (Embodiment 3) <Configuration of the safety confirmation system> The following describes another example of a safety confirmation system using Figure 5. Figure 5 is a diagram showing another example of the configuration of the safety confirmation system according to this disclosure. As shown in Figure 5, the safety confirmation system 1 according to this embodiment 3 comprises a drainage data acquisition device 10 and a safety confirmation server 20. The safety confirmation system 1 according to this embodiment 3 differs from the safety confirmation system 1 according to embodiment 2 in that the safety confirmation server 20 includes a planning unit 26. The other configurations are the same as the safety confirmation system 1 described in embodiment 2, so redundant explanations will be omitted.

[0050] The planning unit 26 selects supplies to be supplied to households that the determination unit 25 has determined to be in an abnormal state. Specifically, it selects the type and quantity of supplies to be supplied to the household based on the estimation results from the estimation unit 23. For example, the planning unit 26 selects water as the type of supply to be supplied to a household based on the household's water shortage status, and further determines the amount of water to be supplied based on the number of people at home. The planning unit 26 also selects food, medicine, etc., as supplies to be supplied to the household based on the sanitary condition of the people at home. Note that the above selection of supplies is just an example and is not limited to these. The planning unit 26 then generates a selection result for each household, specifying the type and quantity of supplies to be supplied to that household.

[0051] Furthermore, the planning unit 26 generates a delivery plan for supplies based on the selection results for each household. The delivery plan includes at least the type and quantity of supplies selected, and the priority of delivery. When generating the delivery plan, the planning unit 26 may also consider the degree of abnormality determined by the determination unit 25. For example, the planning unit 26 sets a higher priority for delivery to households with a high degree of abnormality so that supplies can be delivered quickly to those households. The planning unit 26 may also generate a delivery plan for each region that includes multiple households.

[0052] The planning unit 26 transmits at least one of the generated selection results and delivery plans to local government servers, Self-Defense Forces servers, etc., via the communications unit 21. This allows local governments and the Self-Defense Forces to make appropriate decisions regarding necessary supplies and delivery schedules based on the selection results and delivery plans, and to respond quickly.

[0053] <Methods for confirming safety> Next, another example of a safety confirmation method will be explained using Figure 6. Figure 6 is a flowchart showing another example of a safety confirmation method using the safety confirmation server according to this disclosure. The safety confirmation method according to this embodiment 3 differs from the safety confirmation method according to embodiment 2 in that the processing after the determination unit 25 determines that the household is in an abnormal state (step S204: YES). The processing before step S204 and in step S206 is the same as the safety confirmation method described in embodiment 2, so redundant explanations will be omitted.

[0054] If the determination unit 25 determines that the household is in an abnormal state (step S204: YES), the planning unit 26 selects the supplies to be supplied to the household (step S207). Specifically, it selects the type and quantity of supplies to be supplied to the household based on the estimation results from the estimation unit 23.

[0055] Next, the planning unit 26 generates a delivery plan for supplies based on the selection results for each household (step S208). The delivery plan includes at least the type and quantity of supplies selected and the priority of delivery. When generating the delivery plan, the planning unit 26 may also consider the degree of abnormality determined by the determination unit 25. The planning unit 26 may generate a delivery plan for each household or for each region containing multiple households. The planning unit 26 transmits the generated delivery plan to a local government server or a Self-Defense Forces server via the communication unit 21.

[0056] In summary, the safety confirmation server 20 selects supplies to be supplied to households that the determination unit 25 has determined to be in an abnormal state. Then, the safety confirmation server 20 generates a supply delivery plan based on the selection results for each household. This enables the safety confirmation server 20 to provide supplies quickly and efficiently in areas where infrastructure has stopped during a disaster.

[0057] <Hardware configuration for implementing the safety confirmation function of the safety confirmation system> Some or all of the safety confirmation performed by the safety confirmation system 1 can be implemented using a general-purpose computer system. This will be briefly explained below using Figure 7.

[0058] Figure 7 is a block diagram illustrating an example of a hardware configuration for realizing safety confirmation in the safety confirmation system according to this disclosure. The computer 40 includes, for example, a CPU (Central Processing Unit) 41 which is a control device, RAM (Random Access Memory) 42, and ROM (Read Only Memory) 43. The computer 40 further includes an IF (Interface) 44 which is an interface to the outside world, and an HDD (Hard Disk Drive) 45 which is an example of a non-volatile storage device. Furthermore, the computer 40 may also include other configurations not shown, such as input devices like a keyboard or mouse, and display devices like a display.

[0059] HDD 45 stores an OS (Operating System) and a control program 46, which are not shown in the diagram. The control program 46 is a computer program (safety confirmation program) that implements the safety confirmation process of the safety confirmation system 1.

[0060] The CPU 41 controls various processes in the computer 40, including access to RAM 42, ROM 43, IF 44, and HDD 45. The computer 40 reads and executes the OS and control program 46 stored in HDD 45 by the CPU 41. This enables the computer 40 to perform the safety confirmation process of the safety confirmation system 1.

[0061] The program described above includes a set of instructions (or software code) that, when loaded into a computer, causes the computer to perform one or more of the functions described in this disclosure. The program may be stored in a non-temporary computer-readable medium or a physical storage medium. Examples, but not limited to, include RAM, ROM, flash memory, SSD (Solid-State Drive), or other memory technologies, CD-ROM, DVD (Digital Versatile Disc), Blu-ray® disc, or other optical disc storage, magnetic cassette, magnetic tape, magnetic disk storage, or other magnetic storage devices. The program may be transmitted over a temporary computer-readable medium or a communication medium. Examples, but not limited to, include temporary computer-readable medium or a communication medium that includes electrically, optically, acoustically, or otherwise propagating signals.

[0062] Although the present disclosure has been described above with reference to embodiments, the present disclosure is not limited to the embodiments described above. Various modifications to the structure and details of the present disclosure can be made as can be understood by those skilled in the art within the scope of the present disclosure. Furthermore, each embodiment can be combined with other embodiments as appropriate.

[0063] Each drawing is merely illustrative to illustrate one or more embodiments. Each drawing may be associated with one or more other embodiments rather than with only one specific embodiment. As those skilled in the art will understand, various features or steps described with reference to any one drawing can be combined with features or steps shown in one or more other drawings to create embodiments that are not explicitly illustrated or described. Not all features or steps shown in any one drawing to illustrate an exemplary embodiment are necessarily required, and some features or steps may be omitted. The order of steps shown in any of the drawings may be changed as appropriate.

[0064] Some or all of the above embodiments may also be described as follows, but are not limited to the following:

[0065] (Note 1) A unit that acquires wastewater data related to household wastewater, An estimation unit that generates estimation results that estimate the living conditions of the household based on the aforementioned drainage data, The system includes a determination unit that determines the safety status of the person at home based on the estimation results, Safety confirmation server.

[0066] (Note 2) The estimation unit compares the wastewater data newly acquired by the acquisition unit with reference data set based on the wastewater data acquired by the acquisition unit on a daily basis, and generates the estimation result. The safety confirmation server described in Appendix 1.

[0067] (Note 3) The acquisition unit acquires the drainage data for each water supply facility in the household. The determination unit compares the standard data set for each water supply facility with the wastewater data newly acquired by the acquisition unit to generate the estimation result. The safety confirmation server described in Appendix 2.

[0068] (Note 4) The system further includes a planning unit that generates a selection result for the goods to be supplied to the household based on the estimation results. The safety confirmation server described in any one of the following appendices 1 to 3.

[0069] (Note 5) The planning unit generates a delivery plan for the goods based on the selection results for each household. The safety confirmation server described in Appendix 4.

[0070] (Note 6) The estimation unit estimates at least the number of people at home in the household, the sanitary conditions, and the water shortage status. The safety confirmation server listed in any one of the following appendices 1 to 5.

[0071] (Note 7) The wastewater data includes at least the flow rate of the wastewater, the quality of the wastewater, and the temperature of the water. The safety confirmation server described in any one of the following appendices 1 to 6.

[0072] (Note 8) The determination unit further determines the degree of abnormality of the household based on the estimation result. The safety confirmation server listed in any one of the following appendices 1 to 7.

[0073] (Note 9) The aforementioned delivery plan includes at least the type and quantity of goods selected, and the priority of delivery. The planning unit sets the priority based on the degree of abnormality. The safety confirmation server listed in any one of the appendices 1 to 8.

[0074] (Note 10) A wastewater data acquisition device installed in a home, A sensor unit installed in the drainpipe of the aforementioned household to acquire drainage data related to drainage, A communication unit that transmits the aforementioned drainage data to a server, A power management unit that manages the power required for the operation of the aforementioned drainage data acquisition device, The system includes a power generation unit installed in the drain pipe, which generates electricity using the energy of the wastewater, When the power management unit detects a cessation of power supply from an external power source, it instructs the power generation unit to start generating power. Drainage data acquisition device.

[0075] (Note 11) The communication unit changes the frequency at which it transmits the drainage data to the server based on the power managed by the power management unit during a power outage. The wastewater data acquisition device described in Appendix 10.

[0076] (Note 12) We obtain wastewater data related to household wastewater, Based on the aforementioned wastewater data, an estimation result is generated that estimates the living conditions of the household. Based on the above estimation results, the safety status of the people at home in the household is determined. How to confirm someone's safety.

[0077] (Note 13) The process of acquiring wastewater data related to household wastewater, A process to generate estimation results that estimate the living conditions of the household based on the aforementioned wastewater data, Based on the estimation results, the computer is instructed to perform a process to determine the safety status of the people at home in the household. Safety confirmation program.

[0078] Some or all of the elements (e.g., configuration and function) described in Appendices 2-9 and 10-11, which are subordinate to Appendice 1, may also be subordinate to Appendices 12 and 13 in the same manner as those described in Appendices 2-11. Some or all of the elements described in any appendice may be applicable to various hardware, software, recording means, systems, and methods for recording software. [Explanation of symbols]

[0079] 1. Safety Confirmation System 10. Drainage data acquisition device 11 Communications Department 12 Sensor section 13 Power Generation Department 14. Battery section 15 Power Management Department 20 Safety Confirmation Server 21 Communications Department 22 Acquisition Department 23 Estimation part 24 Memory section 25 Judgment section 26 Planning Department 40 Computers 41 CPU 42 RAM 43 ROM 44 IF 45 HDD 46 Control Program NW Network

Claims

1. A unit that acquires wastewater data related to household wastewater, An estimation unit that generates estimation results that estimate the living conditions of the household based on the aforementioned drainage data, The system includes a determination unit that determines the safety status of the person at home based on the estimation results, Safety confirmation server.

2. The estimation unit compares the wastewater data newly acquired by the acquisition unit with reference data set based on the wastewater data acquired by the acquisition unit on a daily basis, and generates the estimation result. The safety confirmation server according to claim 1.

3. The acquisition unit acquires the drainage data for each water supply facility in the household. The determination unit compares the standard data set for each water supply facility with the wastewater data newly acquired by the acquisition unit to generate the estimation result. The safety confirmation server according to claim 2.

4. The system further includes a planning unit that generates a selection result for the goods to be supplied to the household based on the estimation results. A safety confirmation server according to any one of claims 1 to 3.

5. The planning unit generates a delivery plan for the goods based on the selection results for each household. The safety confirmation server according to claim 4.

6. The estimation unit estimates at least the number of people at home in the household, the sanitary conditions, and the water shortage status. A safety confirmation server according to any one of claims 1 to 3.

7. A wastewater data acquisition device installed in a home, A sensor unit installed in the drainpipe of the aforementioned household to acquire drainage data related to drainage, A communication unit that transmits the aforementioned drainage data to a server, A power management unit that manages the power required for the operation of the aforementioned drainage data acquisition device, The system includes a power generation unit installed in the drain pipe, which generates electricity using the energy of the wastewater, When the power management unit detects a cessation of power supply from an external power source, it instructs the power generation unit to start generating power. Drainage data acquisition device.

8. The communication unit changes the frequency at which it transmits the drainage data to the server based on the power managed by the power management unit during a power outage. The wastewater data acquisition device according to claim 7.

9. We obtain wastewater data related to household wastewater, Based on the aforementioned wastewater data, an estimation result is generated that estimates the living conditions of the household. Based on the above estimation results, the safety status of the people at home in the household is determined. How to confirm someone's safety.

10. The process of acquiring wastewater data related to household wastewater, A process to generate estimation results that estimate the living conditions of the household based on the aforementioned wastewater data, Based on the estimation results, the computer is instructed to perform a process to determine the safety status of the people at home in the household. Safety confirmation program.

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