Resource supply system

Abstract

To provide a resource supply system applicable to a power supply facility for electric vehicles and capable of effectively utilizing resources.SOLUTION: A resource supply system 100 applicable to a power supply facility 1 that supplies power to an electric vehicle comprises: a solar panel 3; power supply equipment 2 capable of supplying power to the electric vehicle using electric power generated by the solar panel 3; water-utilizing facilities including a car wash 6 and a flush toilet 8; a rainwater tank 13 capable of storing rainwater on the solar panel 3; a rainwater supply device 14 capable of supplying the water in the rainwater tank 13 to the car wash 6 and the flush toilet 8; and a water supply control unit 57 capable of controlling the rainwater supply device 14 to supply the water in the rainwater tank 13 to the car wash 6 and the flush toilet 8.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a resource supply system.

Background Art

[0002] In recent years, with the popularization of electric vehicles, the infrastructure of power supply facilities for electric vehicles has been improving. In some cases, a solar power generation facility is provided as a power supply source in the power supply facility.

[0003] When supplying power to an electric vehicle using a solar power generation facility, a power supply time of at least about 30 minutes will occur. Therefore, there is a possibility that a waiting time until power supply occurs during congestion. However, for example, a car wash device is provided in the power supply facility of Patent Document 1. In this case, it is considered that the waiting time for power supply can be effectively utilized by washing the car.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, a large amount of water is required to secure water for car washing. In addition, an environmental load is caused by the drainage of vehicle washing. For this reason, sewage charges will be incurred for the use of tap water and sewage treatment.

[0006] Also, the effective utilization of rainwater falling on the solar power generation panel is also a problem.

[0007] The present invention has been made in view of the above circumstances, and an object thereof is to provide a resource supply system that is applicable to a power supply facility for an electric vehicle and can effectively utilize resources.

Means for Solving the Problems

[0008] To solve the above problems, the resource supply system of the first invention is applied to a power supply facility that supplies power to an electric vehicle, and includes a solar panel, a power supply facility capable of supplying power to the electric vehicle with the generated power generated by the solar panel, a water utilization facility that is a facility using water, a rainwater tank capable of storing rainwater on the solar panel, a rainwater supply device capable of supplying the water in the rainwater tank to the water utilization facility, and a water supply control unit capable of controlling the rainwater supply device to supply the water in the rainwater tank to the water utilization facility.

[0009] The resource supply system of the second invention, in the first invention, includes a rainwater storage amount determination unit capable of determining whether the amount of water in the rainwater tank is greater than a predetermined reference rainwater amount, and when it is determined by the rainwater storage amount determination unit that the amount of water in the rainwater tank is greater than the reference rainwater amount, the water supply control unit can control the rainwater supply device to supply the water in the rainwater tank to the water utilization facility.

[0010] The resource supply system of the third invention, in the first or second invention, has the water utilization facility, a drainage purification device that purifies the water discharged by the water utilization facility into purified water, and a purified water tank capable of storing the purified water, and includes a water circulation system that enables water to be recycled, and the rainwater supply device can supply the water in the rainwater tank to the water circulation system.

[0011] The resource supply system of the fourth invention, in the third invention, includes a rainwater storage amount determination unit capable of determining whether the amount of water in the rainwater tank is greater than a predetermined reference rainwater amount, and a purified water storage amount determination unit capable of determining whether the amount of water in the purified water tank is greater than a predetermined lower reference purified water amount, and when it is determined by the rainwater storage amount determination unit that the amount of water in the rainwater tank is greater than the reference rainwater amount and it is determined by the purified water storage amount determination unit that the amount of water in the purified water tank is not greater than the lower reference purified water amount, the water supply control unit can control the rainwater supply device to supply the water in the rainwater tank to the water circulation system.

[0012] The resource supply system of the fifth invention includes, in the third or fourth invention, a purified water storage amount determination unit capable of determining whether the amount of water in the purified water tank is greater than a predetermined upper reference purified water amount. The water circulation system includes a first water circulation system and a second water circulation system. The first water circulation system has a water discharge device capable of discharging the water of the first water circulation system to the second water circulation system. When it is determined by the purified water storage amount determination unit that the amount of water in the purified water tank of the first water circulation system is greater than the upper reference purified water amount, the water supply control unit can control the water discharge device to discharge water from the first water circulation system to the second water circulation system.

[0013] In the resource supply system of the sixth invention, in any one of the first to fifth inventions, the solar panel is disposed at a distance from the ground, and the rainwater tank is disposed in a space sandwiched between the solar panel and the ground, that is, in the space under the panel.

[0014] The resource supply system of the seventh invention includes, in any one of the first to sixth inventions, the water utilization equipment is capable of supplying tap water from the water supply pipe, and is provided with a water cut-off determination unit capable of determining whether the supply of water by the water supply pipe has stopped. When it is determined by the water cut-off determination unit that the supply of water by the water supply pipe has stopped, the water supply control unit can control the rainwater supply device to limit the supply of the water in the rainwater tank to the water utilization equipment.

[0015] The resource supply system of the eighth invention, in any one of the second to seventh inventions, the water utilization facility is capable of supplying tap water from the water supply system, and has a water cut-off determination unit capable of determining whether or not the supply of water by the water supply system has stopped. The reference rainfall amount includes a first reference rainfall amount and a second reference rainfall amount set to a value larger than the first reference rainfall amount. The rainwater storage amount determination unit determines whether the amount of water in the rainwater tank is greater than the reference rainfall amount. When the water cut-off determination unit determines that the supply of water from the water supply system has not stopped, the determination is made based on the first reference rainfall amount. When the water cut-off determination unit determines that the supply of water from the water supply system has stopped, the determination is made based on the second reference rainfall amount.

[0016] The resource supply system of the ninth invention, in any one of the first to eighth inventions, the water utilization facility is capable of supplying the generated electric power.

[0017] The resource supply system of the tenth invention, in the ninth invention, the power supply facility is connected to a commercial power source, and has a power outage determination unit capable of determining whether or not the supply of commercial power by the commercial power source has stopped, a power supply switching device capable of permitting or blocking the supply of the generated electric power by the solar panel to the water utilization facility, and a power supply control unit capable of controlling the power supply switching device. The power supply control unit is capable of controlling the power supply switching device to limit the supply of the generated electric power by the solar panel to the water utilization facility when the power outage determination unit determines that the supply of commercial power to the power supply facility has stopped.

[0018] The resource supply system of the eleventh invention, in any one of the first to tenth inventions, the water utilization facility includes a car wash facility.

[0019] The resource supply system of the twelfth invention, in any one of the first to eleventh inventions, the water utilization facility includes a flush toilet.

Effect of the Invention

[0020] According to the present invention, it is possible to provide a resource supply system that can be applied to a power supply facility for an electric vehicle and can effectively utilize resources.

Brief Description of the Drawings

[0021]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0022] Hereinafter, a resource supply system 10 according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the resource supply system 10 is applied to a power supply facility 1 for an electric vehicle and is a system that supplies resources such as water and electricity to various facilities in the power supply facility 1.

[0023] (Overview of Power Supply Facility 1) First, the overview of the power supply facility 1 will be described based on FIG. 1. The power supply facility 1 is a facility for supplying power to an electric vehicle. The power supply facility 1 includes a power supply area A1, a power generation area A2, a car wash area A3, and a rest area A4.

[0024] The power supply area A1 is an area for supplying power to an electric vehicle. In the power supply area A1, a power supply facility 2 as a power supply facility is provided. The power supply facility 2 is, for example, a power supply stand. The power supply facility 2 can supply commercial power supplied from a commercial power source C to an electric vehicle.

[0025] The power generation area A2 is an area for generating the electric power used in the power supply facility 1. In the power generation area A2, a solar panel 3 and a pedestal 4 are provided. Although details will be described later, the generated electric power generated by the solar panel 3 can be supplied to various facilities of the power supply facility 1. For example, it can be supplied to the power supply facility 2. The power supply facility 2 can use the generated electric power supplied from the solar panel 3 to charge the in-vehicle battery of an electric vehicle. Note that as the electric vehicle, not only an electric vehicle (EV), but also an automobile using an engine and a motor as power sources, such as a hybrid vehicle (HEV) and a plug-in hybrid vehicle (PHEV), is assumed.

[0026] The pedestal 4 is arranged on the ground G. The solar panel 3 is placed on the pedestal 4. A space is formed between the solar panel 3 and the ground G. Note that the space sandwiched between the solar panel 3 and the ground G may be referred to as the "space under the panel 5".

[0027] The car wash area A3 is an area for washing cars. In the car wash area A3, a car wash machine 6 as car wash equipment is provided. The car wash machine 6 is connected to, for example, the water supply pipe W, and can wash a car with the tap water supplied from the water supply pipe W. A water collecting port 7 is provided on the floor of the car wash area A3. Drainage generated by car washing flows into the water collecting port 7. Note that in this specification, equipment that uses water may be referred to as "water-using equipment". The car wash machine 6 corresponds to water-using equipment. Also, the car wash equipment is not limited to the car wash machine 6, and may be, for example, a mobile high-pressure washer or the like.

[0028] The rest area A4 is an area where users of the power supply facility 1 and the like take a rest. In the rest area A4, a flush toilet 8 is provided. The flush toilet 8 is connected to a drainage pipe P21. The flush toilet 8 is connected to, for example, the water supply pipe W and can supply tap water from the water supply pipe W. The flush toilet 8 can use, for example, tap water as hand-washing water. The flush toilet 8 corresponds to water-using equipment.

[0029] In this specification, among water-using facilities, facilities used for activities related to human life such as washing, body washing, and excretion may be referred to as "domestic water supply facilities". For example, a flush toilet 8 falls under domestic water supply facilities, while a car washer 6 does not.

[0030] Users of the power supply facility 1 can, for example, wash their cars with the car washer 6 or use the flush toilet 8 when they cannot immediately supply power to their vehicles due to congestion or the like, thus effectively utilizing the waiting time. In addition, since various facilities such as the flush toilet 8 are provided in the power supply facility 1, the power supply facility 1 can also be suitably utilized, for example, as a disaster prevention base during disasters.

[0031] Subsequently, the configuration of the resource supply system 10 will be described.

[0032] First, the configuration related to water supply in the configuration of the resource supply system 10 will be described.

[0033] The resource supply system 10 is capable of supplying rainwater to the water-using facilities of the power supply facility 1. The resource supply system 10 includes a rain gutter 11, a rainwater purification device 12, a rainwater tank 13, and a rainwater supply device 14.

[0034] The rain gutter 11 is a facility for collecting rainwater that has fallen on the solar panel 3. The rain gutter 11 has a U-shaped pipe P1 with a substantially U-shaped cross-section in a sectional view and a cylindrical pipe P2 extending from the U-shaped pipe P1. The solar panel 3 is installed, for example, such that its upper surface is inclined with respect to the ground G. The U-shaped pipe P1 is provided, for example, along the lower edge of the solar panel 3. The pipe P2 is connected to the rainwater purification device 12.

[0035] The rainwater purification device 12 is a device for purifying rainwater. The rainwater purification device 12 is, for example, a dust remover that removes impurities in rainwater by filtration.

[0036] The rainwater tank 13 is a facility for storing rainwater. The rainwater tank 13 is, for example, an airtight water tank. The rainwater tank 13 is connected to the rainwater purification device 12 by a pipe P4. The rainwater tank 13 is installed on the ground G and is, for example, placed directly on the ground G. The rainwater tank 13 is arranged in the under-panel space 5. In plan view, at least a part of the rainwater tank 13 overlaps with the solar panel 3, and specifically, the whole overlaps with the solar panel 3.

[0037] The rainwater supply device 14 is a facility for supplying the water in the rainwater tank 13 to the water utilization facilities of the power supply facility 1. The rainwater supply device 14 is connected to the rainwater tank 13 by a pipe P5. The rainwater supply device 14 is connected to a pipe P6 and a pipe P7 (specific details will be described later). The rainwater supply device 14 can supply the water in the rainwater tank 13 to either one of the pipe P6 and the pipe P7. The rainwater supply device 14 has a water supply switching unit 15 for switching the supply destination of the water in the rainwater tank 13.

[0038] The water supply switching unit 15 has, for example, a first rainwater valve 16 connected to the pipe P6 and permitting or blocking the supply of water to the pipe P6, and a second rainwater valve 17 connected to the pipe P7 and permitting or blocking the supply of water to the pipe P7. The water supply switching unit 15 can switch the supply destination of the water in the rainwater tank 13 or stop the supply of the water in the rainwater tank 13 by switching the permission or blocking of the water supply in each of the first rainwater valve 16 and the second rainwater valve 17. The rainwater supply device 14 has, for example, a pump (not shown). The rainwater supply device 14 can pump up the water in the rainwater tank 13 by the driving force of the pump and supply it to various facilities.

[0039] Furthermore, the resource supply system 10 can purify and recycle the water discharged from the water utilization facilities. The resource supply system 10 includes a first water circulation system 21 and a second water circulation system 31.

[0040] The first water circulation system 21 is a water circulation system that recycles the water discharged from the car washer 6. The first water circulation system 21 includes a car washer 6, a first wastewater purification device 23, a first purified water tank 24, and a first purified water supply device 25.

[0041] The first wastewater purification device 23 is a device that purifies the water discharged from the car washer 6 into first purified water. It is assumed that the water discharged from the car washer 6 contains, as dirt, for example, oil such as gasoline and grease, surfactants derived from detergents, heavy metals derived from the vehicle body, and sludge adhering to the vehicle body. The first wastewater purification device 23 is, for example, a device capable of decomposing or removing these contaminants. The first wastewater purification device 23 is connected to the water inlet 7 in the car washing area A3 by a pipe P11.

[0042] Although not shown in the figure, the first wastewater purification device 23 has, for example, equipment capable of decomposing or removing oil, such as an oil separation tank. The first wastewater purification device 23 has equipment capable of decomposing or removing surfactants, such as an oil separation tank, a biological treatment tank, or an activated carbon filtration tank. The first wastewater purification device 23 has, for example, equipment capable of removing heavy metals, such as a pH adjustment tank. The first wastewater purification device 23 has, for example, equipment capable of decomposing or removing sludge, such as a sedimentation separation tank. The first wastewater purification device 23 has, for example, a pump for sucking drainage from the pipe P11 or transferring water within the first wastewater purification device 23. The pump is driven by, for example, electricity. Note that the configuration of the first wastewater purification device 23 is not limited to this, and any device that can purify the drainage from the car washer 6 to a degree that can be reused in the car washer 6 is acceptable.

[0043] The first purified water tank 24 is a facility for storing the first purified water. The first purified water tank 24 is, for example, a closed water tank. The first purified water tank 24 is connected to the first wastewater purification device 23 by a pipe P12. Also, the first purified water tank 24 is connected to the rainwater supply device 14 by a pipe P6. Therefore, the first water circulation system 21 and the rainwater tank 13 are connected through the pipe P5, the rainwater supply device 14 (the first rainwater valve 16), and the pipe P6.

[0044] The first purified water supply device 25 is a device that supplies the water in the first purified water tank 24 to the car washer 6. The first purified water supply device 25 is connected to the first purified water tank 24 by a pipe P13. Also, the first purified water supply device 25 is connected to the car washer 6 by a pipe P14. The first purified water supply device 25 can pump up the water in the first purified water tank 24 by the driving force of a pump (not shown) and supply it to the car washer 6.

[0045] Note that the car washer 6 can use the water in the first purified water tank 24 as the washing water for the automobile. The car washer 6 can use the tap water supplied from the water supply line W and the water in the first purified water tank 24. The car washer 6 may select and use either one of these waters, or may mix and use these waters simultaneously.

[0046] The second water circulation system 31 is a water circulation system that recirculates the water discharged from the flush toilet 8. The second water circulation system 31 includes the flush toilet 8, the second wastewater purification device 33, the second purified water tank 34, and the second purified water supply device 35. Note that the first water circulation system 21 and the second water circulation system 31 may be collectively referred to as "each water circulation system 21, 31".

[0047] The second wastewater purification device 33 is a device that purifies the water discharged from the flush toilet 8 into second purified water. The water discharged from the flush toilet 8 is assumed to contain, as dirt, for example, organic substances, nitrogen, phosphorus, sludge, Escherichia coli, etc. derived from urine and toilet paper. The second wastewater purification device 33 is a device that can decompose or remove these dirt. The second wastewater purification device 33 is connected to the flush toilet 8 by a pipe P21.

[0048] Although not shown, the second wastewater purification device 33 has equipment capable of decomposing or removing organic matter, nitrogen, and phosphorus, and has, for example, an anaerobic tank and a biological contact oxidation tank. The second wastewater purification device 33 has, for example, equipment capable of decomposing or removing sludge, and has, for example, a sedimentation and filtration tank. The second wastewater purification device 33 has equipment capable of killing Escherichia coli, and has, for example, a disinfection tank for storing a disinfectant solution. The purification unit preferably further has a contact filtration tank provided with a contact material. As the contact material, for example, oyster shells are preferably used. In that case, in the contact filtration tank, organic matter, nitrogen, phosphorus, etc. can be preferably decomposed or removed. The second wastewater purification device 33 has, for example, a pump for sucking wastewater from the pipe P21 or transferring water within the second wastewater purification device 33. The second wastewater purification device 33 has, for example, a blower for supplying oxygen to the wastewater in the biological contact oxidation tank or the contact filtration tank chamber. The pump and the blower are driven by, for example, electricity. Further, the configuration of the second wastewater purification device 33 is not limited to this, and any configuration that can purify the wastewater from the flush toilet 8 to a degree that it can be reused in the flush toilet 8 is acceptable.

[0049] The second purified water tank 34 is a facility for storing the second purified water. The second purified water tank 34 is, for example, a closed water tank. The second purified water tank 34 is connected to the second wastewater purification device 33 by a pipe P22. Further, the second purified water tank 34 is connected to the rainwater supply device 14 by the above-described pipe P7. Therefore, the second water circulation system 31 and the rainwater tank 13 are connected through the pipe P5, the rainwater supply device 14 (second rainwater valve 17), and the pipe P7.

[0050] The second purified water supply device 35 is a device that supplies the water in the second purified water tank 34 to the flush toilet 8. The second purified water supply device 35 is connected to the second purified water tank 34 by a pipe P24. Also, the second purified water supply device 35 is connected to the flush toilet 8 by a pipe P25. The second purified water supply device 35 can pump up the water in the second purified water tank 34 by the driving force of a pump (not shown) and supply it to the flush toilet 8. Note that the water in the second purified water tank 34 supplied by the second purified water supply device 35 is used as running water in the flush toilet 8.

[0051] Next, the flow of water in the resource supply system 10 will be described.

[0052] The rainwater that has fallen on the solar panel 3 flows down on the solar panel 3 and flows into the rain gutter 11 (U-shaped pipe P1). The rainwater flows into the rainwater purification device 12 through the rain gutter 11 and is purified by the rainwater purification device 12. The purified rainwater flows into the rainwater tank 13 through the pipe P4 and is stored in the rainwater tank 13. For this reason, the rainwater that has fallen on the solar panel 3 is stored in the rainwater tank 13 in a purified state.

[0053] In the first water circulation system 21, the water discharged from the car washer 6 is collected by the water collection port 7 and flows into the first drainage purification device 23 through the pipe P11. The drainage is purified by the first drainage purification device 23 and becomes the first purified water. The first purified water flows into the first purified water tank 24 through the pipe P12 and is stored in the first purified water tank 24. The water in the first purified water tank 24 is pumped up by the driving force of the pump of the first purified water supply device 25 and supplied to the car washer 6 through the pipes P13 and P14. The water supplied to the car washer 6 is used as washing water for car washing. In this way, the recycling of water is carried out in the first water circulation system 21.

[0054] However, a part of the water circulating in the water circulation system is assumed to go out of the water circulation system as the water utilization equipment is used. In that case, for example, in order to avoid a decrease in the water in the water circulation system, it is conceivable to supply tap water from the water supply pipe W to the circulation system. However, doing so would incur water charges and is considered uneconomical. Also, during a water cut-off, tap water cannot be replenished, so there is a risk that the water in the circulation system will be insufficient and the water utilization equipment will become unusable.

[0055] For example, a part of the water circulating in the first water circulation system 21 may adhere to the washed automobile and go out of the first water circulation system 21.

[0056] Therefore, the water in the rainwater tank 13 can be supplied to the first water circulation system 21. When the water supply switching unit 15 is switched so that water can be supplied to the pipe P6 and the pump of the rainwater supply device 14 is driven, the water in the rainwater tank 13 is pumped up by the driving force of the pump of the rainwater supply device 14 and supplied to the first water purification tank 24 through the pipes P5 and P6. Thereby, a shortage of water in the first water circulation system 21 can be suppressed.

[0057] In the second water circulation system 31, the water discharged from the flush toilet 8 flows into the second drainage purification device 33 through the pipe P21. The drainage is purified by the second drainage purification device 33 to become second purified water. The second purified water flows into the second water purification tank 34 through the pipe P22 and is stored in the second water purification tank 34. The water in the second water purification tank 34 is pumped up by the driving force of the pump of the second water purification supply device 35 and supplied to the flush toilet 8 through the pipes P24 and P25. The water supplied to the flush toilet 8 is used as running water. In this way, the recycling of water is carried out in the second water circulation system 31.

[0058] However, in the second water circulation system 31, when the flush toilet 8 is used continuously for a short period of time, the water in the second water purification tank 34 may be temporarily insufficient. As described above, it is uneconomical to supplement such a shortage of water with tap water, and during a water cut-off, the supply of tap water cannot be carried out.

[0059] Therefore, the second water circulation system 31 can supply the water in the rainwater tank 13. When the water supply switching unit 15 is switched so that water can be supplied to the pipe P7 and the rainwater supply device 14 is put into a driving state, the water in the rainwater tank 13 is pumped up, for example, by the driving force of the pump of the rainwater supply device 14 and supplied to the second water purification tank 34 through the pipe P5 and the pipe P7. Thereby, the shortage of water in the second water circulation system 31 can be suppressed.

[0060] In addition, tap water or rainwater may be supplied to the first water circulation system 21 or the second water circulation system 31. The water stored in the first water purification tank 24 and the second water purification tank 34 is not limited to the first purified water and the second purified water, and may be rainwater or tap water, or water in which these waters are mixed.

[0061] Next, the configuration related to the power supply among the configurations of the resource supply system 10 will be described.

[0062] The resource supply system 10 includes a solar panel 3, a power storage device 41, and a power distribution device 45.

[0063] The solar panel 3 generates electricity using solar energy and outputs the generated electric power.

[0064] The power storage device 41 is a facility that stores the electric power generated by the solar panel 3. The power storage device 41 has a battery 42 and a power supply switching device 43.

[0065] The battery 42 can store the electric power generated by the solar panel 3. The battery 42 is connected to the solar panel 3 by a power line L1.

[0066] In addition, the power storage device 41 includes a power supply switching device 43. The power supply switching device 43 is connected to the battery 42 by the power line L2. The power supply switching device 43 is connected to the commercial power supply C by the power line L3. The power supply switching device 43 is connected to the power distribution device 45 (specifically, the power supply switching device 46 described later) by the power line L4.

[0067] The power supply switching device 43 can take either a state A that permits only the energization between the battery 42 and the power distribution device 45, or a state B that permits only the energization between the commercial power supply C and the power distribution device 45. The power storage device 41 supplies either the stored power of the battery 42 or the commercial power supplied from the commercial power supply C to the power distribution device 45 according to the state of the power supply switching device 43.

[0068] The power distribution device 45 is a switchboard and is a device that distributes the power supplied from the power storage device 41 to various facilities of the power supply facility 1. The power distribution device 45 includes a power supply switching device 46 that permits or cuts off the power supply to the facilities connected to the power distribution device 45. The power supply switching device 46 includes a power supply switch 461, a rainwater supply switch 462, a first water circulation switch 463, and a second water circulation switch 464.

[0069] The power supply switch 461 permits or cuts off the power supply to the power supply facility 2. The power supply switch 461 is connected to the power supply facility 2 by the power line L6.

[0070] The rainwater supply switch 462 permits or cuts off the power supply to the rainwater supply device 14. The rainwater supply switch 462 is connected to the rainwater supply device 14 by the power line L7.

[0071] The first water circulation switch 463 permits or cuts off the power supply to the first water circulation system 21 (specifically, the car washer 6, the first drainage purification device 23, the first purified water supply device 25, etc.). The first water circulation switch 463 is connected to the first water circulation system 21 by the power line L8.

[0072] The second water circulation switch 464 permits or cuts off the power supply to the second water circulation system 31 (specifically, the second purified water supply device 35, the second waste water purification device 33, etc.). The second water circulation switch 464 is connected to the second water circulation system 31 by a power line L9.

[0073] In the resource supply system 10, when the power supply switching device 43 is in the A state, the stored power of the battery 42 can be supplied to various facilities through the power distribution device 45, and when the power supply switching device 43 is in the B state, commercial power can be supplied to various facilities through the power distribution device 45. Note that the power supply switching device 43 and the power supply switching device 46 may be manually switchable by the user.

[0074] Although not shown in the figure, the water supply control device 51 and the power supply control device 71 are each connected to the power storage device 41. Either commercial power or generated power is supplied to the water supply control device 51 and the power supply control device 71, respectively.

[0075] Subsequently, the electrical configuration of the resource supply system 10 will be described based on FIGS. 2 and 3.

[0076] As shown in FIG. 2, the resource supply system 10 includes a water supply control device 51 and a water supply related sensor 61.

[0077] The water supply control device 51 is a device that executes control related to the supply of water. The water supply control device 51 has a control unit 52 and a storage unit 58.

[0078] The control unit 52 is an arithmetic device configured by a processor. The control unit 52 executes various functions related to the supply of water. The control unit 52 reads various programs and data from the storage unit 58 and executes predetermined data processing. The processor is, for example, a CPU (central processing unit), an MPU (micro processing unit), an SoC (system on a chip), etc.

[0079] The storage unit 58 is a storage area that stores programs, data, and the like. In the storage unit 58, for example, a program for causing the control unit 52 to execute each function related to water supply and reference values for performing various determinations are stored. The storage unit 58 is composed of a ROM, a RAM, a flash memory, a solid state drive (SSD), a hard disk drive (HDD), or the like.

[0080] The water supply-related sensor 61 is a sensor related to the control by the water supply control device 51. The water supply-related sensor 61 is connected to the water supply control device 51. The acquisition result of the water supply-related sensor 61 is output to the water supply control device 51 (specifically, the control unit 52). The water supply-related sensor 61 includes a rainwater storage amount sensor 62, a first purified water storage amount sensor 63, a second purified water storage amount sensor 64, and a tap water pressure sensor 65.

[0081] The rainwater storage amount sensor 62 is a sensor that acquires the amount of water stored in the rainwater tank 13. The rainwater storage amount sensor 62 is provided in the rainwater tank 13. The rainwater storage amount sensor 62 is, for example, a water level gauge and acquires the water level in the rainwater tank 13.

[0082] The first purified water storage amount sensor 63 is a sensor that acquires the amount of water stored in the first purified water tank 24. The first purified water storage amount sensor 63 is provided in the first purified water tank 24. The first purified water storage amount sensor 63 is, for example, a water level gauge and acquires the water level in the first purified water tank 24.

[0083] The second purified water storage amount sensor 64 is a sensor that acquires the amount of water stored in the second purified water tank 34. The second purified water storage amount sensor 64 is provided in the second purified water tank 34. The second purified water storage amount sensor 64 is, for example, a water level gauge and acquires the water level in the second purified water tank 34.

[0084] The tap water pressure sensor 65 is a sensor that acquires the water pressure of the tap water supplied from the water supply pipe W. The tap water pressure sensor 65 is provided on the water supply pipe provided in the power supply facility 1.

[0085] The control unit 52 also includes a rainwater storage amount determination unit 53, a first purified water storage amount determination unit 54, a second purified water storage amount determination unit 55, a water cut-off determination unit 56, and a water supply control unit 57.

[0086] The rainwater storage amount determination unit 53 can determine whether a sufficient amount of water is stored in the rainwater tank 13. The rainwater storage amount determination unit 53 can obtain the amount of water in the rainwater tank 13 through the rainwater storage amount sensor 62. Also, a predetermined reference rainwater amount is stored in advance in the storage unit 58. The reference rainwater amount is, for example, the planned storage amount of rainwater. The rainwater storage amount determination unit 53 can obtain the reference rainwater amount from the storage unit 58.

[0087] Based on the acquisition result by the rainwater storage amount sensor 62 and the predetermined reference rainwater amount, the rainwater storage amount determination unit 53 can determine whether the amount of water in the rainwater tank 13 is greater than the predetermined reference rainwater amount.

[0088] The first purified water storage amount determination unit 54 can determine whether the water storage amount in the first purified water tank 24 is sufficient. The first purified water storage amount determination unit 54 can obtain the amount of water in the first purified water tank 24 through the first purified water storage amount sensor 63. Also, a predetermined first lower reference purified water amount is stored in advance in the storage unit 58. The first lower reference purified water amount is, for example, the lower limit value of the amount of water in the first purified water tank 24. The first purified water storage amount determination unit 54 can obtain the first lower reference purified water amount from the storage unit 58.

[0089] Based on the acquisition result by the first purified water storage amount sensor 63 and the first lower reference purified water amount stored in the storage unit 58, the first purified water storage amount determination unit 54 can determine whether the amount of water in the first purified water tank 24 is greater than the first lower reference purified water amount.

[0090] The second purified water storage amount determination unit 55 can determine whether the water storage amount in the second purified water tank 34 is sufficient. The second purified water storage amount determination unit 55 can acquire the amount of water in the second purified water tank 34 through the second purified water storage amount sensor 64. Further, in the storage unit 58, a predetermined lower reference purified water amount is stored in advance. The predetermined lower reference purified water amount is, for example, the lower limit value of the amount of water in the second purified water tank 34, and more specifically, the minimum water level in the second purified water tank 34. The second purified water storage amount determination unit 55 can acquire the lower reference purified water amount from the storage unit 58.

[0091] Based on the acquisition result by the second purified water storage amount sensor 64 and the predetermined lower reference purified water amount stored in the storage unit 58, the second purified water storage amount determination unit 55 can determine whether the amount of water in the second purified water tank 34 is greater than the lower reference purified water amount.

[0092] In addition, the second purified water storage amount determination unit 55 can determine whether the water storage amount in the second purified water tank 34 is excessive. In the storage unit 58, a predetermined upper reference purified water amount is stored in advance. The predetermined upper reference purified water amount is set as the upper limit value of the amount of water in the second purified water tank 34. The second purified water storage amount determination unit 55 can acquire the upper reference purified water amount from the storage unit 58.

[0093] The water cut-off determination unit 56 determines whether the supply of water by the water supply pipe W has stopped. The water cut-off determination unit 56 can acquire the water pressure in the water supply pipe in the power supply facility 1 through the water supply pipe water pressure sensor 65. Note that the state in which the supply of water by the water supply pipe W has stopped may be referred to as a "water cut-off state". Further, in the storage unit 58, a predetermined reference water pressure is stored in advance.

[0094] When the acquisition result by the water supply pipe water pressure sensor 65 is less than the predetermined reference water pressure, the water cut-off determination unit 56 determines that the supply of water by the water supply pipe W has stopped (in a water cut-off state), and when it is equal to or greater than the predetermined reference water pressure, the water cut-off determination unit 56 determines that the supply of water by the water supply pipe W has not stopped (not in a water cut-off state).

[0095] The water supply control unit 57 is connected to the rainwater supply device 14, the first purified water supply device 25, and the second purified water supply device 35, respectively. Although details will be described later, the water supply control unit 57 controls various devices connected to the water supply control unit 57 based on the determination results of various determination units of the water supply control device 51.

[0096] Also, as shown in FIG. 3, the resource supply system 10 includes a power supply control device 71 and a power supply related sensor 81.

[0097] The power supply control device 71 is a device that executes control related to the supply of electricity. The power supply control device 71 has a control unit 72 and a storage unit 77.

[0098] Similar to the control unit 52, the control unit 72 is an arithmetic device composed of a processor. The control unit 72 executes various functions related to the supply of electricity. The control unit 72 reads various programs and data from the storage unit 77 and executes predetermined data processing.

[0099] Similar to the storage unit 58, the storage unit 77 is a storage area for storing programs, data, etc. In the storage unit 77, for example, programs for causing the control unit 72 to execute various functions related to the supply of electricity, reference values for performing various determinations, etc. are stored.

[0100] The power supply related sensor 81 is a sensor related to the control by the power supply control device 71. The power supply related sensor 81 is connected to the power supply control device 71. The acquisition result by the power supply related sensor 81 is output to the power supply control device 71 (specifically, the control unit 72). The power supply related sensor 81 has a power storage amount sensor 82 and a power sensor 83.

[0101] The power storage amount sensor 82 is provided in the power storage device 41. The power storage amount sensor 82 acquires the power storage amount of the battery 42.

[0102] The power sensor 83 is provided on the power line L3 connected to the commercial power supply C. The power sensor 83 detects the power flowing through the power line L3. It can be said that the power sensor 83 is detecting the presence or absence of the supply of commercial power to the power supply facility 1.

[0103] Also, the control unit 72 includes a power storage amount determination unit 73, a power outage determination unit 74, and a power supply control unit 75.

[0104] The power storage amount determination unit 73 determines whether the power storage amount of the battery 42 is sufficient. The power storage amount determination unit 73 can acquire the power storage amount of the battery 42 through the power storage amount sensor 82. Also, a predetermined reference power storage amount is stored in advance in the storage unit 77. The power storage amount determination unit 73 can acquire the predetermined reference power storage amount from the storage unit 77.

[0105] The power storage amount determination unit 73 determines whether the power storage amount of the battery 42 is greater than the predetermined reference power storage amount based on the acquisition result by the power storage amount sensor 82 and the predetermined reference power storage amount.

[0106] The power outage determination unit 74 determines whether the supply of commercial power by the commercial power supply C has stopped. The power outage determination unit 74 can acquire the power detection result by the power sensor 83. Note that the state where the supply of commercial power by the commercial power supply C has stopped may be referred to as a "power outage state".

[0107] When no power is detected by the power sensor 83, the power outage determination unit 74 determines that the supply of commercial power by the commercial power supply has stopped (in a power outage state). When power is detected by the power sensor 83, the power outage determination unit 74 determines that the supply of commercial power by the commercial power supply C has not stopped (not in a power outage state).

[0108] The power supply control unit 75 is respectively connected to the power storage device 41 and the power distribution device 45. Although it will be described in detail later, the power supply control unit 75 controls various devices connected to the power supply control unit 75 based on the determination results by each determination unit of the control unit 72.

[0109] Here, the water supply control device 51 executes a rainwater supply process, which is a process related to the supply of rainwater to the first water circulation system 21 and the second water circulation system 31. Hereinafter, the rainwater supply process and the water discharge process will be described with reference to FIG. 4. Note that FIG. 4 is a flowchart showing the flow of the rainwater supply process. The flowchart of FIG. 4 is repeatedly executed by the water supply control unit 57 at a predetermined time period (for example, 1 minute).

[0110] First, the rainwater supply process will be described. In this embodiment, when the rainwater supply device 14 is on, it means that the pump of the rainwater supply device 14 is in a driving state, and when the rainwater supply device 14 is off, it means that the pump of the rainwater supply device 14 is in a non-driving state.

[0111] As shown in FIG. 4, in step S11, it is determined whether a water cut-off state has occurred. Specifically, it is determined whether the water pressure of the water supply pipe W acquired by the tap water pressure sensor 65 is less than a predetermined reference water pressure. If the acquisition result by the tap water pressure sensor 65 is equal to or greater than the predetermined reference water pressure, that is, if it is not in a water cut-off state, a NO determination is made and the process proceeds to step S12. If the acquisition result by the tap water pressure sensor 65 is less than the predetermined reference water pressure, that is, if it is in a water cut-off state, a YES determination is made and the process proceeds to step S21.

[0112] In step S12, the first reference rainwater amount is acquired from the storage unit 58 as the reference rainwater amount. Then, the process proceeds to step S13.

[0113] In step S13, it is determined whether the water in the rainwater tank 13 is insufficient. Specifically, it is determined whether the water storage amount of the rainwater tank 13 acquired by the rainwater storage amount sensor 62 is equal to or less than the first reference rainwater amount. If the acquisition result by the rainwater storage amount sensor 62 is equal to or less than the first reference rainwater amount, a NO determination is made and the process proceeds to step S14. If the acquisition result by the rainwater storage amount sensor 62 is greater than the first reference rainwater amount, a YES determination is made and the process proceeds to step S15.

[0114] In step S14, the rainwater supply device 14 is turned off. The first rain valve 16 is closed. The second rain valve 17 is closed. Therefore, when the water storage volume in the rainwater tank 13 is insufficient, the water in the rainwater tank 13 is not supplied to either the first purified water tank 24 or the second purified water tank 34. Thereby, it is possible to easily secure the water storage volume of the rainwater tank 13. Then, this process ends.

[0115] In step S15, it is determined whether the water storage volume in the first purified water tank 24 is sufficient. Specifically, the first lower reference purified water volume is acquired from the storage unit 58, and it is determined whether the amount of water in the first purified water tank 24 acquired by the first purified water storage amount sensor 63 is greater than the first lower reference purified water volume. If the acquisition result by the first purified water storage amount sensor 63 is equal to or less than the first lower reference purified water volume, a NO determination is made and the process proceeds to step S16. If the acquisition result by the first purified water storage amount sensor 63 is greater than the first lower reference purified water volume, a YES determination is made and the process proceeds to step S19.

[0116] In step S16, it is determined whether the water storage volume in the second purified water tank 34 is sufficient. Specifically, the second reference purified water volume is acquired from the storage unit 58, and it is determined whether the water storage volume in the second purified water tank 34 acquired by the second purified water storage amount sensor 64 is greater than the second reference purified water volume. If the acquisition result by the second purified water storage amount sensor 64 is equal to or less than the second reference purified water volume, a NO determination is made and the process proceeds to step S17. If the acquisition result by the second purified water storage amount sensor 64 is greater than the second reference purified water volume, a YES determination is made and the process proceeds to step S18.

[0117] In step S17, the rainwater supply device 14 is turned on. The first rain valve 16 is opened. The second rain valve 17 is opened. Therefore, when the water storage volume in the rainwater tank 13 is not insufficient, and the water storage volumes in both the first purified water tank 24 and the second purified water tank 34 are insufficient, the water in the rainwater tank 13 is supplied to the first purified water tank 24 and the second purified water tank 34 respectively. Thereby, since it is possible to easily secure the water storage volumes of the first purified water tank 24 and the second purified water tank 34, it is possible to easily secure the circulation water volumes of the first water circulation system 21 and the second water circulation system 31. Then, this process ends.

[0118] In step S18, the rainwater supply device 14 is turned on. The first rain valve 16 is opened. The second rain valve 17 is closed. Therefore, when the water storage volume in the rainwater tank 13 is not insufficient, and the water storage volume in the first purified water tank 24 is insufficient, and the water storage volume in the second purified water tank 34 is not insufficient, the water in the rainwater tank 13 is supplied to the first purified water tank 24 and not supplied to the second purified water tank 34. Thereby, it is possible to easily secure the water storage volume of the first purified water tank 24. Then, this process ends.

[0119] Also, in step S19, similar to step S16, it is determined whether the water storage volume of the second purified water tank 34 is sufficient. When the acquisition result by the second purified water storage amount sensor 64 is equal to or less than the second reference purified water amount, a NO determination is made and the process proceeds to step S20. When the acquisition result by the second purified water storage amount sensor 64 is greater than the second reference purified water amount, a YES determination is made and the process proceeds to step S14.

[0120] In step S20, the rainwater supply device 14 is turned on. The first rain valve 16 is closed. The second rain valve 17 is opened. Therefore, if the water storage volume in the rainwater tank 13 is not insufficient, and the water storage volume in the first purified water tank 24 is not insufficient, and the water storage volume in the second purified water tank 34 is insufficient, the water in the rainwater tank 13 is supplied to the second purified water tank 34 and not to the first purified water tank 24. Thereby, it is possible to easily secure the water storage volume in the second purified water tank 34. Then, this process ends.

[0121] In step S14, as described above, the rainwater supply device 14 is turned off. The first rain valve 16 is closed. The second rain valve 17 is closed. Thereby, if the water storage volumes in both the first purified water tank 24 and the second purified water tank 34 are sufficient, the water in the rainwater tank 13 is not supplied to either the first purified water tank 24 or the second purified water tank 34. Thereby, it is possible to easily secure the water storage volume in the rainwater tank 13. Then, this process ends.

[0122] Also, in step S21, the second reference rainwater volume is acquired from the storage unit 58 as the reference rainwater volume. Then, the process proceeds to step S22.

[0123] In step S22, it is determined whether the water storage volume in the rainwater tank 13 is sufficient. If the acquisition result by the rainwater storage volume sensor 62 is less than or equal to the second reference rainwater volume, a NO determination is made and the process proceeds to step S14. If the acquisition result by the rainwater storage volume sensor 62 is greater than the second reference rainwater volume, a YES determination is made and the process proceeds to step S19.

[0124] In step S14, as described above, the rainwater supply device 14 is turned off. The first rain valve 16 is closed. The second rain valve 17 is closed. Therefore, in the water cut state, when the water storage volume in the rainwater tank 13 is insufficient, the water in the rainwater tank 13 is not supplied to either the first purified water tank 24 or the second purified water tank 34. However, the second reference rainfall amount is set to a value larger than the first reference rainfall amount. Therefore, when the supply of water from the water supply pipe W is stopped, more water is secured in the rainwater tank 13 compared to the case where the supply of water from the water supply pipe W is not stopped. Then, this process ends.

[0125] In step S19, as described above, it is determined whether the water storage volume in the second purified water tank 34 is sufficient. If the acquisition result by the second purified water storage amount sensor 64 is equal to or less than the second reference purified water amount, a NO determination is made and the process proceeds to step S20. If the acquisition result by the second purified water storage amount sensor 64 is greater than the second reference purified water amount, a YES determination is made and the process proceeds to step S14.

[0126] In step S20, as described above, the rainwater supply device 14 is turned on. The first rain valve 16 is closed. The second rain valve 17 is opened. Therefore, in the water cut state, and when the water storage volume in the rainwater tank 13 is not insufficient and the water storage volume in the second purified water tank 34 is insufficient, the water in the rainwater tank 13 is supplied to the second purified water tank 34. However, the water in the rainwater tank 13 is not supplied to the first purified water tank 24. Thereby, at the time of water cut, it is easier to secure the water storage volume in the rainwater tank 13 and it is possible to easily secure the water storage volume in the second purified water tank 34. Then, this process ends.

[0127] In step S14, as described above, the rainwater supply device 14 is turned off. The first rain valve 16 is closed. The second rain valve 17 is closed. Therefore, when in a water cut-off state and the water storage volume in the second water purification tank 34 is not insufficient, the water in the rainwater tank 13 is not supplied to the second water purification tank 34. Also, the water in the rainwater tank 13 is not supplied to the first water purification tank 24 either. Thereby, during a water cut-off, it becomes easier to secure the water storage volume in the rainwater tank 13. Then, this process ends.

[0128] Thus, when a YES determination is made in step S11, that is, when in a water cut-off state, the water in the rainwater tank 13 is not supplied to the first water purification tank 24 regardless of whether the water storage volume in the first water purification tank 24 is insufficient. On the other hand, the water in the rainwater tank 13 is supplied to the second water circulation system 31 when the water storage volume in the second water circulation system 31 is insufficient. In other words, when in a water cut-off state, the water in the rainwater tank 13 can be supplied only to the second water circulation system 31 out of the first water circulation system 21 and the second water circulation system 31. Further in other words, when in a water cut-off state, the water in the rainwater tank 13 can be supplied only to the domestic water supply facility (specifically, the flush toilet 8) out of a plurality of water usage facilities (specifically, the car washer 6 and the flush toilet 8). Thereby, during a water cut-off, while it is possible to more suitably secure the water storage volume in the rainwater tank 13, it is possible to suppress the domestic water supply facility (flush toilet 8) from becoming unusable.

[0129] Incidentally, the flush toilet 8 is considered to be a facility that is particularly desired to be used during disasters among domestic water supply facilities. For this reason, making the flush toilet 8 available during water cut-off may be prioritized over securing the water storage capacity of the rainwater tank 13. In that case, for example, it is conceivable to remove step S21 and step S22 from the flowchart of FIG. 4. Then, when a water cut-off has occurred and the water storage capacity of the second water purification tank 34 is insufficient, the second rainwater valve 17 is set to the open state regardless of the water storage capacity of the rainwater tank 13. And the water in the rainwater tank 13 is supplied to the second water purification tank 34. Thereby, it is possible to more suitably suppress the flush toilet 8 from becoming unusable during a water cut-off.

[0130] Further, the power supply control device 71 executes a power supply process which is a process related to the supply of power to the first water circulation system 21 and the second water circulation system 31. Hereinafter, the power supply process will be described with reference to FIG. 5. FIG. 5 is a flowchart showing the flow of the power supply process. The flowchart of FIG. 5 is repeatedly executed by the power supply control unit 75 at a predetermined time period (for example, 1 second).

[0131] As shown in FIG. 5, in step S41, it is determined whether a power outage has occurred at the power supply facility 1. More specifically, it is determined whether power is detected by a power sensor 83 provided on the power line L3 connected to the commercial power supply C. When power is detected by the power sensor 83, that is, when it is not in a power outage state, a NO determination is made and the process proceeds to step S42. When power is not detected by the power sensor 83, that is, when it is in a power outage state, a YES determination is made and the process proceeds to step S46.

[0132] In step S42, it is determined whether the power storage amount of the battery 42 is sufficient. More specifically, a reference power storage amount is acquired from the storage unit 58, and it is determined whether the power storage amount acquired by the power storage amount sensor 82 is greater than the reference power storage amount. If the acquisition result by the power storage amount sensor 82 is greater than the reference power storage amount, that is, if the power storage amount of the battery 42 is sufficient, a YES determination is made and the process proceeds to step S43. If the acquisition result by the power storage amount sensor 82 is less than or equal to the reference power storage amount, that is, if the power storage amount of the battery 42 is not sufficient, a NO determination is made and the process proceeds to step S44.

[0133] In step S43, the power supply switching device 43 is controlled so that the power storage power of the battery 42 (that is, the power generated by the solar panel 3) is supplied to the power distribution device 45. More specifically, the power supply switching device 43 is switched to the A state. Then, the process proceeds to step S45.

[0134] In step S44, the power supply switching device 43 is controlled so that commercial power is supplied to the power distribution device 45. More specifically, the power supply switching device 43 is switched to the B state. Then, the process proceeds to step S45.

[0135] In step S45, the power supply switch 461, the rainwater supply switch 462, the first water circulation switch 463, and the second water circulation switch 464 are all turned on. As a result, when a power outage has not occurred, power is supplied to the power supply facility 2, the rainwater supply device 14, the first water circulation system 21, and the second water circulation system 31. To the power supply facility 2, the rainwater supply device 14, the first water circulation system 21, and the second water circulation system 31, when the power storage amount of the battery 42 is sufficient, the power generated by the solar panel 3 from the battery 42 is supplied, and when the power storage amount of the battery 42 is not sufficient, commercial power is supplied from the commercial power source C. Thereby, it is possible to easily secure the power storage amount of the battery 42. Then, this process ends.

[0136] Also, in step S46, similar to step S43, the power supply switching device 43 is controlled so that the power generated by the solar panel 3 is supplied to the power distribution device 45. Then, the process proceeds to step S47.

[0137] In step S47, the power supply switch 461 is turned on. The second water circulation switch 464 is turned on. The first water circulation switch 463 is turned off. The rainwater supply switch 462 is turned off. Then, this process ends. For this reason, when a power outage occurs, the storage power of the battery 42 is supplied to various facilities of the power supply facility 1 regardless of the stored power of the battery 42. The power generated by the solar panel 3 is supplied to the power supply facility 2 and the second water circulation system 31, and no power is supplied to the rainwater supply device 14 and the first water circulation system 21. In this way, during a power outage, the supply of the storage power of the battery 42 to a part of the water circulation system of the rainwater supply device 14 and the battery 42 is restricted.

[0138] Thereby, the power supply facility 2 that supplies power to the automobile and the flush toilet 8 are considered to be highly necessary during a disaster. By enabling the supply of generated power to the second water circulation system 31 including the power supply facility 2 and the flush toilet 8, it is possible to prevent the power supply facility 2 and the flush toilet 8 from becoming unusable during a disaster.

[0139] Also, the car wash 6 is considered to be relatively less necessary during a disaster. By cutting off the power supply to the first water circulation system 21 including the car wash 6, it is possible to suppress the consumption of the battery 42 without significantly impairing the convenience of the power supply facility 1. In this way, during a disaster, by partially restricting the supply of the storage power of the battery 42 to the water circulation system, it is easier to ensure the stored power of the battery 42. Also, when the power supply to the rainwater supply device 14 is cut off, the rainwater supply control stops. Thereby, during a power outage, it is possible to suppress the consumption of the battery 42 caused by the rainwater supply control.

[0140] Note that in step S47, the rainwater supply switch 462 may be turned on. In this case, although the battery 42 is more likely to be slightly consumed, power can be supplied to the rainwater supply device 14 to continue rainwater supply control.

[0141] According to the resource supply system 10 of this embodiment, the following effects can be obtained.

[0142] According to this embodiment, the resource supply system 100 includes a solar panel 3, a power supply facility 2 capable of supplying power to an electric vehicle by the generated power generated by the solar panel 3, a car wash 6 and a flush toilet 8 which are facilities using water, a rainwater tank 13 capable of storing rainwater on the solar panel 3, a rainwater supply device 14 capable of supplying the water in the rainwater tank 13 to the car wash 6 and the flush toilet 8, and a control unit 52 capable of controlling the rainwater supply device 14. The water supply control unit 57 controls the rainwater supply device 14 to supply the water in the rainwater tank 13 to the car wash 6 and the flush toilet 8.

[0143] According to such a configuration, the rainwater that has fallen on the solar panel 3 can be used in facilities that use water, such as the car wash 6 and the flush toilet 8. Thereby, while effectively utilizing the rainwater that has fallen on the solar panel 3, the occurrence of water shortage or the like in the power supply facility 1 can be suppressed. Therefore, a resource supply system 100 that can effectively utilize resources can be provided.

[0144] According to this embodiment, the resource supply system 100 includes a rainwater storage amount determination unit 53 that determines whether the amount of water in the rainwater tank 13 is greater than a predetermined reference rainwater amount. When the rainwater storage amount determination unit 53 determines that the amount of water in the rainwater tank 13 is greater than the reference rainwater amount, the water supply control unit 57 controls the rainwater supply device 14 to supply the water in the rainwater tank 13 to the car wash 6 and the flush toilet 8.

[0145] According to such a configuration, it is possible to easily ensure the water storage amount of the rainwater tank 13, so that the water shortage in the power supply facility 1 can be preferably suppressed.

[0146] According to this embodiment, a car wash 6 is provided in the power supply facility 1.

[0147] Thereby, in the power supply facility 1, for example, the waiting time until power supply can be effectively utilized.

[0148] According to this embodiment, a flush toilet 8 is provided in the power supply facility 1.

[0149] Thereby, in the power supply facility 1, for example, the waiting time until power supply can be effectively utilized. Also, by releasing the flush toilet 8 to neighboring residents, the power supply facility 1 can be suitably utilized as a disaster prevention base.

[0150] According to this embodiment, the resource supply system 100 includes a first water circulation system 21 and a second water circulation system 31 that each perform water recycling. The first water circulation system 21 has a car wash 6 and can purify the water discharged from the car wash 6 for recycling. The second water circulation system 31 has a flush toilet 8 and can purify the water discharged from the flush toilet 8 for recycling. The rainwater supply device 14 can supply the water in the rainwater tank 13 to each of the water circulation systems 21 and 31.

[0151] According to such a configuration, water recycling is possible in the car wash 6 and the flush toilet 8. Thereby, the use of tap water in the power supply facility 1 can be suppressed, and the amount of drainage generated can be reduced. Also, by supplying rainwater, it is easy to ensure the amount of recycled water in each of the water circulation systems 21 and 31.

[0152] According to this embodiment, the resource supply system 10 includes a first purified water storage amount determination unit 54 that can determine whether the amount of water in the first purified water tank 24 is greater than a predetermined first lower reference purified water amount. When the rainwater storage amount determination unit 53 determines that the amount of water in the rainwater tank 13 is equal to or greater than the first rainwater reference amount, and the first purified water storage amount determination unit 54 determines that the amount of water in the first purified water tank 24 is equal to or less than the first lower reference purified water amount, the water supply control unit 57 can control the rainwater supply device 14 to supply the water in the rainwater tank 13 to the first water circulation system 21.

[0153] Similarly, the resource supply system 10 includes a second purified water storage amount determination unit 55 that can determine whether the amount of water in the second purified water tank 34 is greater than a predetermined second lower reference purified water amount. When the rainwater storage amount determination unit 53 determines that the amount of water in the rainwater tank 13 is equal to or greater than the second rainwater reference amount, and the second purified water storage amount determination unit 55 determines that the amount of water in the second purified water tank 34 is equal to or less than the second lower reference purified water amount, the water supply control unit 57 can control the rainwater supply device 14 to supply the water in the rainwater tank 13 to the second water circulation system 31.

[0154] Thereby, in the first water circulation system 21 and the second water circulation system 31, it is possible to easily ensure the amount of circulated water.

[0155] According to this embodiment, the solar panel 3 is arranged at a distance from the ground G. The rainwater tank 13 is arranged in the panel lower space 5, which is a space sandwiched between the solar panel 3 and the ground G.

[0156] Conventionally, the under-panel space 5 has been explored for effective utilization methods. According to such a configuration, since the under-panel space 5 can be effectively utilized as the installation location of the rainwater tank 13, the utilization value of the under-panel space 5 can be created. Also, compared with the case where the rainwater tank 13 is buried underground, the rainwater tank 13 can be easily installed. Therefore, it is possible to easily introduce a resource supply system to an existing power supply facility later. Further, in the power supply facility, there is a possibility that oil and water derived from automobiles or the like may occur, and compared with the case where the rainwater tank 13 is buried underground, the inflow of oil and water into the rainwater tank 13 can be easily prevented.

[0157] According to the present embodiment, the water supply line W is connected to each of the water circulation systems 21 and 31. The resource supply system 10 includes a water cut-off determination unit 56 capable of determining whether or not the supply of water by the water supply line W has stopped. When it is determined by the water cut-off determination unit 56 that the supply of water by the water supply line W has stopped, the water supply control unit 57 can control the rainwater supply device 14 to limit the supply of the water in the rainwater tank 13 to each of the water circulation systems 21 and 31.

[0158] According to such a configuration, in the power supply facility 1, it is possible to easily secure rainwater during a water cut-off. Also, the power supply facility 1 may be utilized as a disaster prevention base, for example, during a disaster. In that case, for example, the water in the rainwater tank 13 may be provided to neighboring residents. Since it is easy to secure the water storage amount in the rainwater tank 13 during a water cut-off, such measures can be easily implemented. Therefore, it is possible to more easily utilize the power supply facility 1 as a disaster prevention base.

[0159] According to the present embodiment, the rainwater supply device 14 can supply the water in the rainwater tank 13 to each of the water circulation systems 21 and 31. When it is determined by the water cut-off determination unit 56 that the supply of water from the water supply line W has stopped, the water supply control unit 57 can control the rainwater supply device 14 so that the water in the rainwater tank 13 can be supplied only to a specific water circulation system (specifically, the second water circulation system 31) among the water circulation systems 21 and 31.

[0160] The second water circulation system 31 has, for example, a flush toilet 8. It is considered that there is a particularly high need to enable the flush toilet 8 to be used during a water cut-off. According to such a configuration, even during a water cut-off, rainwater can be supplied to the second water circulation system 31 including the flush toilet 8, so that it is possible to suppress the flush toilet 8 from becoming unusable during a water cut-off. Thereby, even during a water cut-off, it is easy to ensure the convenience of the power supply facility. And the power supply facility can be suitably utilized as a disaster prevention base.

[0161] According to the present embodiment, the reference rainfall amount has a first reference rainfall amount and a second reference rainfall amount set to a value larger than the first reference rainfall amount. When the water supply determination unit 56 determines that the water supply from the water supply pipe W has not stopped, the rainwater storage amount determination unit 53 determines whether the amount of water in the rainwater tank 13 is larger than the first reference rainfall amount. When the water supply determination unit 56 determines that the water supply from the water supply pipe W has stopped, the rainwater storage amount determination unit 53 determines whether the amount of water in the rainwater tank 13 is larger than the second reference rainfall amount. In other words, when the water supply determination unit 56 determines that the water supply from the water supply pipe W has not stopped, the rainwater storage amount determination unit 53 executes the determination of whether the amount of water in the rainwater tank 13 is larger than the reference rainfall amount based on the first reference rainfall amount. When the water supply determination unit 56 determines that the water supply from the water supply pipe W has stopped, the rainwater storage amount determination unit 53 executes the determination based on the second reference rainfall amount.

[0162] Thereby, during a water cut-off, more water can be stored in the rainwater tank 13 than in normal times. Thereby, it is possible to easily secure rainwater during a water cut-off, so that it is possible to suppress a shortage of water in the power supply facility 1.

[0163] According to the present embodiment, each of the water circulation systems 21 and 31 can be supplied with electric power generated by the solar panel 3.

[0164] According to such a configuration, the electric power generated by the solar panel 3 can be effectively utilized. And the consumption of commercial power can be suppressed. Therefore, a resource supply system 10 that can effectively utilize resources can be provided. Also, since it is possible to easily secure power during a disaster, the power supply facility 1 can be suitably utilized as a disaster prevention base.

[0165] According to the present embodiment, a commercial power source C is connected to the power supply facility 1. The resource supply system 100 includes a power failure determination unit 74 capable of determining whether or not the supply of commercial power by the commercial power source C has stopped, a power supply switching device 43 and a power supply switching device 46 capable of permitting or blocking the supply of the electric power generated by the solar panel 3 to each of the water circulation systems 21, 31, and a power supply control unit 75 capable of controlling the power supply switching device 43 and the power supply switching device 46. When the power failure determination unit 74 determines that the supply of commercial power to the power supply facility 1 has stopped, the control unit 72 can control the power supply switching device 43 and the power supply switching device 46 so as to limit the supply of the electric power generated by the solar panel 3 to each of the water circulation systems 21, 31.

[0166] Specifically, when the power failure determination unit 74 determines that the supply of commercial power to the power supply facility 1 has stopped, the power supply control unit 75 controls the power supply switching device 43 so that the stored electric power of the battery 42 (the electric power generated by the solar panel 3) is supplied to the power supply switching device 46, and cuts off the supply of the electric power generated by the solar panel 3 to the first water circulation system 21, and controls the power supply switching device 46 so as to permit the supply of the electric power generated by the solar panel 3 to the second water circulation system 31.

[0167] According to such a configuration, during a power outage, the supply of generated power to the first water circulation system 21 is cut off. As a result, the consumption of generated power during a power outage can be suppressed. Also, water recycling may not necessarily be carried out during a disaster. For example, during a disaster, it is considered that the use of the car washer 6 is not so necessary, so it is considered that there will be no particular problem even if the car washer 6 and the first water circulation system 21 are stopped. Therefore, during a disaster, it is possible to easily secure power while suppressing the impairment of the convenience of the power supply facility 1.

[0168] On the other hand, during a power outage, the supply of generated power to the second water circulation system 31 is carried out. It is considered preferable that the second water circulation system 31 related to the flushing toilet 8 and the drainage treatment and water supply of the flushing toilet 8 can be used even during a disaster. However, since the second water circulation system 31 can be operated even during a power outage, it is possible to suppress the flushing toilet 8 from becoming unusable due to water shortage or the like. Thereby, it is possible to easily ensure the convenience of the power supply facility 1 during a disaster.

[0169] And, since the convenience of the power supply facility 1 is ensured even during a disaster and power can be easily secured, the power supply facility 1 can be suitably utilized as a disaster prevention base.

[0170] (Modification example) Hereinafter, a modification example of the resource supply system 10 of the present embodiment will be described with reference to FIG. 6. In the following description, the same components as those in the above embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. In this modification example, the power supply facility 1 is provided with a car washer 6 and a shower 9 as water utilization facilities.

[0171] As shown in FIG. 6, in this modification example, the second water circulation system 31 has a shower 9 instead of the flushing toilet 8. In the second water circulation system 31, the drainage after washing the body with the shower 9 is purified by the second drainage purification device 33 and recycled. Note that the shower 9 corresponds to domestic water supply facilities.

[0172] Part of the water circulating in the first water circulation system 21 is assumed to adhere to the vehicle and go out of the first water circulation system 21. Also, part of the water circulating in the second water circulation system 31 is assumed to adhere to the user's body and go out of the second water circulation system 31. For this reason, the water in the first water circulation system 21 and the water in the second water circulation system 31 gradually decrease, and there is a possibility that a water shortage may occur in the first water circulation system 21 and the second water circulation system 31.

[0173] On the other hand, when tap water is used in the car wash 6 or the shower 9, the water in the first water circulation system 21 and the water in the second water circulation system 31 may increase. For this reason, when a large amount of tap water is used in the car wash 6 or the shower 9, there is a possibility that an overflow may occur in the first water circulation system 21 and the second water circulation system 31.

[0174] Therefore, in this modified example, the first water circulation system 21 has a first water discharge device 26 that can discharge the water in the first water circulation system 21 to the second water circulation system 31. The second water circulation system 31 has a second water discharge device 36 that can discharge the water in the second water circulation system 31 to the first water circulation system 21. Note that the first water discharge device 26 and the second water discharge device 36 each correspond to a water discharge device.

[0175] The first water discharge device 26 is connected to, for example, the first water purification tank 24 by a pipe P15. The first water discharge device 26 is connected to, for example, the second water purification tank 34 by a pipe P23. The first water discharge device 26 can pump up the water in the first water purification tank 24 and discharge it to the second water purification tank 34 by the driving force of a pump (not shown).

[0176] The second water discharge device 36 is connected to, for example, the second water purification tank 34 by a pipe P26. The second water discharge device 36 is connected to, for example, the first water purification tank 24 by a pipe P27. The second water discharge device 36 can pump up the water in the second water purification tank 34 by the driving force of a pump (not shown) and discharge it into the first water purification tank 24. Thus, water can be exchanged between the first water circulation system 21 and the second water circulation system 31.

[0177] Note that the positions where the first water discharge device 26 and the second water discharge device 36 draw water and discharge water are not limited to these, and may be locations other than the first water purification tank 24 in the first water circulation system 21 or locations other than the second water purification tank 34 in the second water circulation system 31. However, when the water discharge device draws water from the water before being purified by the wastewater purification device, the water should be discharged to a location in the wastewater purification device or upstream of the wastewater purification device. In addition, the first water discharge device 26 and the second water discharge device 36 do not necessarily need to be provided separately, and one water discharge device may be used to discharge the water in the first water circulation system 21 into the second water circulation system 31 and discharge the water in the second water circulation system 31 into the first water circulation system 21.

[0178] The first purified water storage amount determination unit 54 can determine whether the water storage amount in the first water purification tank 24 is excessive. In the storage unit 58, a predetermined upper reference purified water amount is stored in advance. The upper reference purified water amount is, for example, set as the upper limit value of the amount of water in the first water purification tank 24. The first purified water storage amount determination unit 54 can obtain the upper reference purified water amount from the storage unit 58.

[0179] Based on the detection result by the first purified water storage amount sensor 63 and the upper reference purified water amount stored in advance in the storage unit 58, the first purified water storage amount determination unit 54 can determine whether the amount of water in the first water purification tank 24 is greater than the upper reference purified water amount.

[0180] The water supply control unit 57 is connected to the first water discharge device 26. When the first purified water storage amount determination unit 54 determines that the amount of water in the first purified water tank 24 is greater than the upper reference purified water amount, the water supply control unit 57 can control the first water discharge device 26 to discharge water from the first water circulation system 21 (the first purified water tank 24) to the second water circulation system 31 (the second purified water tank 34).

[0181] According to such a configuration, it is possible to easily secure the amount of circulated water in the second water circulation system 31 while suppressing the occurrence of overflow in the first water circulation system 21. In addition, the surplus water generated in the first water circulation system 21 can be effectively utilized.

[0182] Similarly, the second purified water storage amount determination unit 55 can determine whether the water storage amount in the second purified water tank 34 is excessive. In the storage unit 58, a predetermined second upper reference purified water amount is stored in advance. The second upper reference purified water amount is, for example, the upper limit value of the amount of water in the second purified water tank 34. The second purified water storage amount determination unit 55 can acquire the second upper reference purified water amount from the storage unit 58.

[0183] Based on the detection result by the second purified water storage amount sensor 64 and the second upper reference purified water amount stored in advance in the storage unit 58, the second purified water storage amount determination unit 55 can determine whether the amount of water in the second purified water tank 34 is greater than the second upper reference purified water amount.

[0184] The water supply control unit 57 is connected to the second water discharge device 36. When the second purified water storage amount determination unit 55 determines that the amount of water in the second purified water tank 34 is greater than the second upper reference purified water amount, the water supply control unit 57 can control the second water discharge device 36 to discharge water from the second water circulation system 31 (the second purified water tank 34) to the first water circulation system 21 (the first purified water tank 24).

[0185] According to such a configuration, it is possible to easily secure the amount of circulated water in the first water circulation system 21 while suppressing the occurrence of overflow in the second water circulation system 31. In addition, the surplus water generated in the second water circulation system 31 can be effectively utilized.

[0186] In addition, in this modified example, the resource supply system 10 includes a first water discharge device 26 that discharges the water in the first water circulation system 21 to the second water circulation system 31, and a second water discharge device 36 that discharges the water in the second water circulation system 31 to the first water circulation system 21, and is configured to be able to exchange water between the first water circulation system 21 and the second water circulation system 31. However, the resource supply system 10 may be configured to be able to discharge water only from one of the first water circulation system 21 and the second water circulation system 31 to the other. For example, the resource supply system 10 may include only the first water discharge device 26 or only the second water discharge device 36 among the first water discharge device 26 and the second water discharge device 36.

[0187] As described above, the embodiments of the present invention have been described. However, the present invention is not limited to the above embodiments and can be appropriately modified.

[0188] ·In the above embodiment, the water supply control unit 57 controls the rainwater supply device 14 based on the determination result of the rainwater storage amount determination unit 53. However, the rainwater storage amount determination unit 53 is not an essential component. For example, the rainwater supply device 14 may be controlled based only on the determination results of the first purified water storage amount determination unit 54 and the second purified water storage amount determination unit 55. However, the configuration of the above embodiment is preferable in terms of being able to preferably secure rainwater in the power supply facility 1.

[0189] · In the above-described embodiment, the rainwater supply device 14, the first purified water supply device 25, the first water discharge device 26, the second purified water supply device 35, and the second water discharge device 36 each had a pump, and the supply of water was executed by the driving force of the pump. However, those pumps are not essential components. The rainwater supply device 14, the first purified water supply device 25, the first water discharge device 26, the second purified water supply device 35, and the second water discharge device 36 may, for example, utilize the fact that water flows down by its own weight to execute the supply of water. In that case, for example, the rainwater supply device 14, the first purified water supply device 25, the first water discharge device 26, the second purified water supply device 35, and the second water discharge device 36 may have a valve that permits or blocks the supply of water from the device to the outside of the device, and the supply of water may be executed or stopped by opening and closing the valve.

[0190] In addition, in that case, in the rainwater supply process, the process of turning the rainwater supply device on or off becomes unnecessary. In the rainwater supply process, the control of whether or not to execute the supply of rainwater is performed only by controlling the opening and closing of the first rainwater valve 16 and the second rainwater valve 17.

[0191] · In the above-described embodiment, the rainwater tank 13 was directly placed on the ground G, but it is not limited to this. The rainwater tank 13 may be arranged at a distance from the ground G, and for example, it may be installed on the ground G via a pedestal. In that case, it is possible to facilitate the flow-down of the water in the rainwater tank 13 by its own weight. The same applies to the first purified water tank 24 and the second purified water tank 34. The rainwater tank 13 may be arranged outside the panel lower space 5 on the ground G or may be buried underground. However, in terms of obtaining the above-described effects, it is preferable that the rainwater tank 13 is arranged in the panel lower space 5.

[0192] · In the above embodiment, the water in the rainwater tank 13 was supplied to the first water purification tank 24 and the second water purification tank 34. However, in the first water circulation system 21 and the second water circulation system 31, it may be supplied to locations other than the first water purification tank 24 and the second water purification tank 34. The water in the rainwater tank 13 may be supplied to, for example, the first wastewater purification device 23 and the second wastewater purification device 33.

[0193] · In the above embodiment, the power supply facility 1 included the first water circulation system 21 and the second water circulation system 31. However, the water circulation system is not an essential component. In the power supply facility 1, the wastewater of the water-using equipment does not necessarily have to be recycled. For example, it may be discharged into the sewer. However, by providing a water circulation system in the resource supply system, the use of tap water and the discharge of sewage can be suppressed. Furthermore, it is possible to make it easier to use water-using equipment even in areas where it is impossible to secure a water source such as a water supply system or in areas where it is impossible to secure a discharge destination for wastewater. Also, one water circulation system may be provided in the power supply facility, or three or more water circulation systems may be provided.

[0194] · In the above embodiment, the water-using equipment was the car washer 6, the flush toilet 8, and the shower 9. However, as long as it is equipment that uses water, it is not limited to these.

[0195] · In the above embodiment, the car washer 6, the flush toilet 8, and the shower 9 were each connected to the water supply pipe W. However, as long as it is possible to secure the necessary water, they do not have to be connected to the water supply pipe W.

[0196] ·The rainwater tank may be provided with a rainwater extraction part for extracting the water in the rainwater tank. The rainwater extraction part may be, for example, a faucet. This makes it easier to use the water in the rainwater tank 13 for various purposes. Examples of the uses of the rainwater include, for example, water supply to neighboring residents during disasters. In that case, the power supply facility 1 can be more preferably utilized as a base during disasters. Further, the rainwater tank is not limited to a closed water tank, and may be, for example, an open water tank at the top. In that case, rainwater can be easily extracted from the rainwater tank through the opening. Note that the opening corresponds to the rainwater extraction part. The same applies to the purified water tank.

[0197] ·The rainwater treatment device is not limited to the one in the above embodiment. For example, the rainwater treatment device may be integrated with the rainwater tank. In that case, for example, the rainwater treatment device may have activated carbon disposed in the rainwater tank and a blower for sending air into the rainwater tank to perform aeration, and be capable of purifying the water in the rainwater tank. Note that the blower may be operable by the generated electric power from the solar panel 3. In that case, assuming that a power outage and a water cut occur simultaneously, it is preferable to ensure that the power supply to the rainwater treatment device continues even during a power outage.

Explanation of Reference Numerals

[0198] 1 Power supply facility 3 Solar panel 2 Power supply equipment 5 Space under the panel 6 Car washer (car washing facility and first water utilization facility) 8 Flush toilet (second water utilization facility) 10 Resource supply system 13 Rainwater tank 14 Rainwater supply device 21 First water circulation system 23 First drainage purification device 24 First purified water tank 26 First water discharge device 31 Second water circulation system 33 Second drainage purification device 34 Second water purification tank 36 Second water discharge device 43, 46 Power switching unit (power supply switching device) 53 Rainwater storage amount determination unit 54 First water purification storage amount determination unit (water purification storage amount determination unit) 55 Second water purification storage amount determination unit (water purification storage amount determination unit) 56 Water cut-off determination unit 57 Water supply control unit 74 Power failure determination unit 75 Power supply control unit C Commercial power supply G Ground W Water supply

Claims

1. Applied to a power supply facility that supplies power to an electric vehicle, a solar panel, power supply equipment capable of supplying power to the electric vehicle with the generated power generated by the solar panel, a water utilization facility that is a facility using water, a rainwater tank capable of storing rainwater on the solar panel, a rainwater supply device capable of supplying the water in the rainwater tank to the water utilization facility, a water supply control unit capable of controlling the rainwater supply device to supply the water in the rainwater tank to the water utilization facility, A resource supply system comprising:

2. Comprising a rainwater storage amount determination unit capable of determining whether the amount of water in the rainwater tank is greater than a predetermined reference rainwater amount, When it is determined by the rainwater storage amount determination unit that the amount of water in the rainwater tank is greater than the reference rainwater amount, the water supply control unit can control the rainwater supply device to supply the water in the rainwater tank to the water utilization facility. The resource supply system according to Claim 1.

3. Having the water utilization facility, a drainage purification device that purifies the water discharged by the water utilization facility into purified water, and a purified water tank capable of storing the purified water, and comprising a water circulation system that enables the recycling of water, The rainwater supply device can supply the water in the rainwater tank to the water circulation system. The resource supply system according to Claim 1 or 2.

4. A rainwater storage amount determination unit capable of determining whether the amount of water in the rainwater tank is greater than a predetermined reference rainwater amount, A purified water storage amount determination unit capable of determining whether the amount of water in the purified water tank is greater than a predetermined lower reference purified water amount, Comprising, When it is determined by the rainwater storage amount determination unit that the amount of water in the rainwater tank is greater than the reference rainwater amount, and it is determined by the purified water storage amount determination unit that the amount of water in the purified water tank is not greater than the lower reference purified water amount, the water supply control unit can control the rainwater supply device to supply the water in the rainwater tank to the water circulation system. The resource supply system according to Claim 3.

5. Comprising a purified water storage amount determination unit capable of determining whether the amount of water in the purified water tank is greater than a predetermined upper reference purified water amount, The water circulation system includes a first water circulation system and a second water circulation system, The first water circulation system has a water discharge device capable of discharging the water in the first water circulation system to the second water circulation system, When it is determined by the water supply control unit that the amount of water in the purified water tank of the first water circulation system is greater than the upper reference purified water amount by the purified water storage amount determination unit, the water discharge device can be controlled to discharge water from the first water circulation system to the second water circulation system. The resource supply system according to claim 3.

6. The solar panel is disposed at a distance from the ground. The rainwater tank is disposed in a panel lower space, which is a space sandwiched between the solar panel and the ground. The resource supply system according to claim 1 or 2.

7. The water utilization facility is capable of supplying tap water from a water supply. It includes a water cut-off determination unit capable of determining whether the supply of water by the water supply has stopped. When it is determined by the water cut-off determination unit that the supply of water by the water supply has stopped, the water supply control unit can control the rainwater supply device to limit the supply of water in the rainwater tank to the water utilization facility. The resource supply system according to claim 1 or 2.

8. The water utilization facility is capable of supplying tap water from a water supply. It includes a water cut-off determination unit capable of determining whether the supply of water by the water supply has stopped, The reference rainfall amount has a first reference rainfall amount and a second reference rainfall amount set to a value greater than the first reference rainfall amount. When it is determined by the water cut-off determination unit that the supply of water from the water supply has not stopped, the rainwater storage amount determination unit determines whether the amount of water in the rainwater tank is greater than the reference rainfall amount based on the first reference rainfall amount. When it is determined by the water cut-off determination unit that the supply of water from the water supply has stopped, the determination is executed based on the second reference rainfall amount. The resource supply system according to claim 2.

9. The water utilization facility can be supplied with the generated electric power. The resource supply system according to claim 1 or 2.

10. The power supply facility is connected to a commercial power supply. It includes a power failure determination unit capable of determining whether the supply of commercial power by the commercial power supply has stopped. A power supply switching device capable of permitting or blocking the supply of the generated electric power by the solar panel to the water utilization facility. A power supply control unit capable of controlling the power supply switching device. It is provided with. The power supply control unit can control the power supply switching device to limit the supply of the generated power from the solar panel to the water utilization facility when it is determined by the power outage determination unit that the supply of the commercial power to the power supply facility has stopped. The resource supply system according to claim 9.

11. The water utilization facility includes a car wash facility. The resource supply system according to claim 1 or 2.

12. The water utilization facility includes a flush toilet. The resource supply system according to claim 1 or 2.

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