Water control system

Abstract

To provide a water control system for underutilized land that can implement flood control measures in a river basin without constructing a dam or widening a river.SOLUTION: The present invention is a water control system 1 that controls water intake and discharge in a target section of underutilized land adjacent to a water source, and comprises a water intake gate 3 that takes water from the water source to the target section, a discharge gate 4 that is positioned lower than the water intake gate 3 and discharges water from the target section to the water source, a water intake gate opening / closing drive unit 33 that drives the opening and closing of the water intake gate 3, a discharge gate opening / closing drive unit 43 that drives the opening and closing of the discharge gate 4, and an information processing device 10 that receives weather data for the target section and issues control commands to the water intake gate opening / closing drive unit 33 and the discharge gate opening / closing drive unit 43.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a water control system for managing water on a target parcel of underutilized land adjacent to a water source. [Background technology]

[0002] Green infrastructure is a concept that aims to utilize the mechanisms and functions of the natural environment in the development of social capital and contribute to solving various social problems, and is gradually being introduced in Japan. In recent years, as the risk of water disasters due to global warming and climate change has increased, expectations are growing for green infrastructure that can solve problems related to river basin flood control. In particular, in suburban areas, there is concern that the amount of underutilized land, such as vacant land and unused farmland, will increase due to population decline, a declining birthrate, and an aging population, and attention is being paid to the possibility of creating multifunctional green infrastructure on such land.

[0003] In constructing such green infrastructure, it is conceivable that data such as water levels and weather in the upstream areas of rivers and other areas can be collected by sensors and ICT technology can be used to store rainwater and manage water supply and drainage. Regarding the use of ICT technology in the field, for example, Non-Patent Document 1 proposes water supply gates and water supply valves that can manually or automatically supply water to rice paddies from a remote location, weather sensors that can observe weather conditions at the installation location in real time via the cloud, and cloud-compatible water level meters that can remotely monitor water levels in canals, reservoirs, rivers, etc. in real time from a personal computer or smartphone. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] https: / / farmo.info / Summary of the Invention [Problem to be solved by the invention]

[0005] The prior art described in Non-Patent Document 1 proposes the use of water supply gates, weather sensors, and water level gauges in farmland and rice paddies for agricultural purposes. However, there is a problem in that no knowledge is disclosed about how to utilize water supply gates, weather sensors, and water level gauges to realize and improve the functionality of underutilized land as multifunctional green infrastructure. [Means for solving the problem]

[0006] This invention solves the above-mentioned problems, and the water control system of the present invention is a water control system that controls water intake and discharge in a target section of underutilized land adjacent to a water source, and is characterized by having a water intake gate that takes water from the water source to the target section, a discharge gate that is positioned lower than the water intake gate and discharges water from the target section to the water source, a water intake gate opening / closing drive unit that drives the opening and closing of the water intake gate, a discharge gate opening / closing drive unit that drives the opening and closing of the discharge gate, and an information processing device that receives weather data for the target section and issues control commands to the water intake gate opening / closing drive unit and the discharge gate opening / closing drive unit.

[0007] The water control system of the present invention is further characterized in that it comprises a water bag arranged in a target plot of underutilized land, and a water bag pump drive unit that changes the capacity of the water bag based on a control command transmitted from the information processing device.

[0008] In addition, the water control system of the present invention is characterized in that, when the received weather data forecasts rainfall within a specified period of time, the information processing device issues a control command to the water intake gate opening / closing drive unit to close the water intake gate, and issues a control command to the drainage gate opening / closing drive unit to open the drainage gate.

[0009] In addition, the water control system of the present invention further includes a water bag that is placed in a target plot of low-utilization land, and a water bag pump drive unit that changes the capacity of the water bag based on a control command sent from the information processing device, and the information processing device is characterized in that when the received weather data indicates current rainfall, it sends a control command to the water bag pump drive unit to inflate the water bag.

[0010] In addition, the water control system of the present invention is characterized in that, when the received weather data indicates current rainfall, the information processing device issues a control command to the water intake gate opening / closing drive unit to open the water intake gate, and issues a control command to the drainage gate opening / closing drive unit to close the drainage gate.

[0011] In addition, the water control system of the present invention further has a water level meter that acquires water level data in the target area and transmits the acquired water level data to the information processing device, and when the received weather data indicates current rainfall and the received water level data is above a predetermined value, the information processing device is characterized in that it issues a control command to the water intake gate opening / closing drive unit to close the water intake gate, and issues a control command to the drainage gate opening / closing drive unit to close the drainage gate.

[0012] In addition, the water control system of the present invention is characterized in that, when the information processing device determines based on the received weather data that a predetermined time has passed since rainfall, it issues a control command to the water intake gate opening / closing drive unit to close the water intake gate, and issues a control command to the drainage gate opening / closing drive unit to open the drainage gate.

[0013] In addition, the water control system of the present invention further includes a water bag that is placed in a target plot of low-utilization land, and a water bag pump drive unit that changes the capacity of the water bag based on a control command sent from the information processing device, and when the information processing device determines based on the received weather data that a predetermined time has passed since rainfall, it sends a control command to the water bag pump drive unit to contract the water bag.

[0014] In addition, the water control system of the present invention further includes a temperature observation unit that acquires temperature and humidity data in a target plot and transmits the acquired temperature and humidity data to the information processing device; a water bag that is placed in the target plot of low-utilized land; and a water bag pump drive unit that changes the capacity of the water bag based on a control command transmitted from the information processing device, wherein when the received weather data predicts continued sunny weather for a predetermined period of time or more, and the received temperature data is above the predetermined value and the humidity data is below the predetermined value, the information processing device transmits a control command to the water intake gate opening / closing drive unit to close the water intake gate, transmits a control command to the drainage gate opening / closing drive unit to open the drainage gate, and transmits a control command to the water bag pump drive unit to contract the water bag. [Effects of the Invention]

[0015] The water control system of the present invention comprises a water intake gate opening / closing drive unit that drives the opening and closing of a water intake gate for water intake and discharge in a target section of underutilized land adjacent to a water source, a drainage gate opening / closing drive unit that drives the opening and closing of a drainage gate, and an information processing device that receives weather data for the target section and sends control commands to the water intake gate opening / closing drive unit and the drainage gate opening / closing drive unit.With this water control system of the present invention, it becomes possible to remotely manage water in underutilized land upstream, thereby enabling the development and improvement of the functions of underutilized land as multifunctional green infrastructure and enabling measures to be taken to control flooding in the watershed without building dams or widening rivers.

[0016] Furthermore, by actively controlling water, the water control system of the present invention can simultaneously contribute to biodiversity and water purification during normal times, as well as flood control during rainfall. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a diagram showing an outline of a terrain to which a water control system 1 according to an embodiment of the present invention can be applied. [Figure 2] FIG. 1 is a diagram showing an example in which a water control system 1 according to an embodiment of the present invention is applied to an abandoned rice paddy field. [Figure 3] 1 is a diagram showing an example of a system configuration of a water control system 1 according to an embodiment of the present invention. [Figure 4] FIG. 2 is a diagram showing an example of a user interface screen of the water control system 1 according to the embodiment of the present invention. [Figure 5] FIG. 2 is a diagram showing an example of a user interface screen of the water control system 1 according to the embodiment of the present invention. [Figure 6] FIG. 2 is a diagram showing an example of a user interface screen of the water control system 1 according to the embodiment of the present invention. [Figure 7] 2 is a schematic diagram of a cross section of a recessed topography portion P. FIG. [Figure 8] 10 is an example of a control flowchart (processing before rainfall) based on data from a weather data providing server or the like. [Figure 9] 10 is an example of a control flowchart (processing during rainfall) based on data from a weather data providing server or the like. [Figure 10] 10 is an example of a control flowchart (processing during rainfall) based on data from a weather data providing server or the like. [Figure 11] 10 is an example of a control flowchart (processing after rainfall) based on data from a weather data providing server or the like. [Figure 12] 10 is an example of a control flowchart (processing during continued fine weather) based on data from a weather data providing server or the like. [Figure 13] 10 is an example of a control flowchart (processing during continued fine weather) based on data from a weather data providing server or the like. DETAILED DESCRIPTION OF THE INVENTION

[0018] An embodiment of the present invention will be described below with reference to the drawings. Before describing the water control system 1 according to the present invention, an example of a natural environment to which the water control system 1 can be applied will be described. FIG. 1 is a diagram showing an outline of a terrain to which the water control system 1 according to an embodiment of the present invention can be applied. FIG. 1 shows a cut-out view of a portion of the terrain. The right side of the drawing shows relatively high-altitude mountainous areas and plateau areas on the outskirts of cities, while the left side of the drawing shows relatively low-altitude flatlands and valley bottoms. Looking at a river, the right side of the drawing is the upstream area, and the right side is the downstream area. While FIG. 1 shows an image of applying the water control system 1 according to the present invention to a relatively high-altitude mountainous area, the water control system 1 according to the present invention can also be frequently applied to valley topography (yatsu) that is common in many suburban areas.

[0019] The water control system 1 according to the present invention can be applied to underutilized land located along a river (or a tributary of a river) in a relatively upstream area. Here, the definition of "underutilized land" can be the same as that in administrative and legal terms. The water control system 1 according to the present invention is intended to be applied to underutilized land such as abandoned farmland, rice paddies, and vacant land in urban areas. In the following, this embodiment will be described using abandoned rice paddies as an example of underutilized land and a river as an example of a water source. However, the water control system 1 according to the present invention is not limited to these examples; the underutilized land may also be abandoned farmland, and the water source may also be a puddle in a valley depression.

[0020] The water control system 1 according to the present invention is intended to at least control water intake and discharge in a target plot of underutilized land (abandoned rice paddies) adjacent to a water source such as a river. The present invention aims to implement flood control measures in the downstream area of ​​a river by utilizing the water storage capacity of the underutilized land. The configuration for this purpose will be described below based on the configuration examples shown in Figures 2 and 3. However, the configuration of the water control system 1 according to the present invention is not limited to the examples shown in Figures 2 and 3, and various configurations can be adopted depending on the natural topography.

[0021] Fig. 2 is a diagram showing an example in which the water control system 1 according to an embodiment of the present invention is applied to an abandoned rice paddy. Fig. 3 is a diagram showing an example of the system configuration of the water control system 1 according to an embodiment of the present invention.

[0022] Figure 2 shows a low-utilization area of ​​land, a depression P, which is part of an abandoned rice paddy in the upstream basin of a river, where water is taken in and discharged to control flooding in the downstream basin. For example, depression P is adjacent to the river, which is the water source W, with a ridge R in between.

[0023] The ridge R is provided with a water intake gate 3 that takes in water from a water source W such as a river into the target area, which is a depressed topography P, and a drainage gate 4 that is positioned lower than the water intake gate 3 and drains water from the depressed topography P to the water source W. The water intake gate 3 is provided with a water intake gate opening / closing drive unit 33 (not shown in Figure 2) that drives it to open and close, and the drainage gate 4 is provided with a drainage gate opening / closing drive unit 43 (not shown in Figure 2) that drives it to open and close.

[0024] 3, the water intake gate opening / closing drive unit 33 and the drainage gate opening / closing drive unit 43 are connected to a communication line N so as to be able to communicate data by wire or wirelessly. The information processing device 10 is also connected to the communication line N so as to be able to communicate data. The information processing device 10 is capable of transmitting control commands to the water intake gate opening / closing drive unit 33 and the drainage gate opening / closing drive unit 43 via the communication line N such as the Internet.

[0025] The information processing device 10 can be a general-purpose personal computer or tablet device that includes a CPU, a ROM that stores programs running on the CPU, RAM that serves as the CPU's work area, an SSD or HDD that serves as a large-capacity storage device, input / output devices such as a display device, a mouse and keyboard, and an interface for wired and wireless data communication (all of which are not shown in detail). There are no particular restrictions on where the information processing device 10 can be installed, but it is expected that it will be installed in a remote location away from the target plot of underutilized land (abandoned rice paddies).

[0026] The information processing device 10 operates in cooperation with each of the components shown in the figure that are connected to the information processing device 10 via a communication line N. Furthermore, various control processes in the water control system of the present invention are executed based on programs and data stored in storage means such as a ROM within the information processing device 10. In this embodiment, each of the above means is realized by the information processing device 10 and a program executed on the information processing device 10, but these means are not limited to this and may be realized only by hardware such as a logic circuit.

[0027] The information processing device 10 can accumulate log data such as data acquired in the target area, data on the status of the devices installed in the target area, and weather data. The water control system 1 according to the present invention is capable of accumulating log data using a timekeeping function typically provided in the information processing device 10, such as a personal computer or tablet terminal. The information processing device 10 can also remotely monitor the status of the target area based on the data acquired in the target area and data on the status of the devices installed in the target area. The information processing device 10 can also control the devices installed in the target area to change their status. Such control can be performed manually by a person or automatically by a program.

[0028] The water intake gate 3 is provided with a water intake gate flow meter 34 that measures the flow rate of water flowing through the water intake gate 3 and transmits the measured flow rate data to the information processing device 10 via the communication line N. The drain gate 4 is provided with a drain gate flow meter 44 that measures the flow rate of water flowing through the drain gate 4 and transmits the measured flow rate data to the information processing device 10 via the communication line N.

[0029] The recessed topography portion P has a substantially rectangular shape in a plan view. A water bag with an adjustable capacity is provided so that the recessed topography portion P can be treated as two compartments. A pump (not shown) is connected to the water bag, and by driving the pump, water can flow into the water bag from a water source W or the like, causing the water bag to expand, or by driving the pump, water can flow out of the water bag to the water source W or the like, causing the water bag to contract. Control commands can be sent from the information processing device 10 via the communication line N to the drive unit that drives the pump.

[0030] As shown in Figure 2, when the water bag is inflated, the recessed topography section P can be treated as two compartments: an upstream compartment P1 and a downstream compartment P2. When the water bag is deflated, it can be treated as if there are no compartments. A water bag for this purpose is called a compartmented water bag 5. The capacity of the compartmented water bag 5 can be changed by driving the pump using the compartmented water bag pump drive unit 15.

[0031] The depressed topography portion P has a roughly rectangular shape in a plan view, and the periphery of the rectangle is called the boundary portion E. The boundary portion E may have a defect portion D, and in order to properly store water in the depressed topography portion P, it may be necessary to complement and reinforce this defect portion D. A boundary complement water bag 7 is used to complement and reinforce the defect portion D. By expanding the boundary complement water bag 7, the defect portion D is complemented and reinforced by the boundary complement water bag 7, and water can be stored in the depressed topography portion P. The capacity of the boundary complement water bag 7 can be changed by driving the pump using the boundary complement water bag pump drive unit 17.

[0032] In this embodiment, the number of partition dividing water bags 5 and the number of boundary complementing water bags 7 to be provided in the target partition, the concave terrain portion P, are shown as one each, but there is no particular limit to these numbers, and they can be adjusted as appropriate depending on the terrain shape of the concave terrain portion P.

[0033] Each of the two sections, the upstream section P1 and the downstream section P2, is provided with a water level gauge to measure the water level in that section. The water level data measured by the water level gauge is transmitted to the information processing device 10 via a communication line N. An upstream section water level gauge 21 is provided in the upstream section P1, and a downstream section water level gauge 22 is provided in the downstream section P2.

[0034] A target section image capturing unit 50 is provided near the depressed topography section P, capturing an image of the entire depressed topography section P to acquire image data. The image data acquired by this target section image capturing unit 50 is transmitted to the information processing device 10 via a communication line N. The information processing device 10 can use the image data transmitted from the target section image capturing unit 50 for remote monitoring, and can also perform image analysis of the image data to make decisions in the automatic control of the water control system 1 according to the present invention. Methods for analyzing image data may include, but are not limited to, methods using AI.

[0035] A meteorological observation unit 55 capable of observing the weather around the depressed topography portion P, which is the target area, is arranged near the depressed topography portion P. The meteorological observation unit 55 acquires at least data related to the temperature and humidity around the depressed topography portion P. Furthermore, the meteorological observation unit 55 may acquire data related to wind direction, wind speed, sunshine, etc. The various data acquired by the meteorological observation unit 55 is transmitted to the information processing device 10 via the communication line N. The information processing device 10 can store the received data as log data and can use the data for making decisions in the automatic control of the water control system 1 according to the present invention.

[0036] The weather data providing server 60 is a server that distributes and provides current weather data and future weather forecast data. The information processing device 10 is capable of receiving the current weather data and weather forecast data transmitted from the weather data providing server 60 via the communication line N. The information processing device 10 can use the received current weather data and weather forecast data for making decisions in the automatic control of the water control system 1 according to the present invention.

[0037] The river water level data providing server 70 is a server that distributes and provides water level data measured by water level gauges installed in rivers. The information processing device 10 is capable of receiving current water level data transmitted from the river water level data providing server 70 via the communication line N. The information processing device 10 can use the received water level data for making decisions in the automatic control of the water control system 1 according to the present invention. Note that the river water level data is not limited to that provided by the river water level data providing server 70, but may also be obtained from water level gauges installed in rivers with permission.

[0038] Next, the functions of the water control system 1 according to the present invention configured as described above will be described. The following explanation will be based on an example of a user interface screen display on a display device in an information processing device 10 on which the program for the water control system 1 according to the present invention is executed. Figures 4 to 6 are diagrams showing an example of a user interface screen for the water control system 1 according to an embodiment of the present invention.

[0039] 4 is an example of a user interface screen related to the real-time display function. In the illustrated user interface screen, "Upstream section water level" is a box that displays water level data received from the upstream section water level gauge 21, and "Downstream section water level" is a box that displays water level data received from the downstream section water level gauge 22. In addition, "Water source upstream water level" and "Water source downstream water level" can display water level data sent from the river water level data providing server 70 and water level data obtained by water level gauges installed in the river.

[0040] Also, on the user interface screen shown in FIG. 4, "Intake flow rate" is a box that displays flow rate data received from the intake gate flow meter 341, and "Discharge flow rate" is a box that displays flow rate data received from the discharge gate flow meter 441. Also, "Rainfall" is a box that displays rainfall data for the target section based on the current weather data received from the weather data providing server 60. Also, the "Intake gate" box displays the open / close status of the intake gate 3, and the "Discharge gate" box displays the open / close status of the intake gate 3. The "Compartment dividing water bag" box displays the expansion / contraction status of the compartment dividing water bag 5, and the "Boundary complementing water bag" box displays the expansion / contraction status of the boundary complementing water bag 7.

[0041] Figure 5 shows an example of a user interface screen for setting conditions for controlling the water control system 1. In the user interface screen shown, the "Upstream Section" is a box where the water level conditions in the upstream section P1 are set, and the "Downstream Section" is a box where the water level conditions in the downstream section P2 are set. The "Logic" box is a box where the logic, such as AND or OR, between the conditions set in the "Upstream Section" and the conditions set in the "Downstream Section" is set. The "Threshold Width" box is a box where the width of the water level threshold set as a condition is set. Setting such a threshold width prevents fluctuations in control. When the conditions set above are met, the operation to be performed is set in the "Intake Gate" box and the "Discharge Gate" box. The "Manual Priority" checkbox also sets the priority between manual operation and automatic control. Pressing the "Change Settings" button saves the set conditions, operations, etc.

[0042] 6 is a display example of a user interface screen used when manually controlling the water control system 1. This user interface screen displays buttons that can be pressed with a pointing device.

[0043] When the "Open" button for "Water Intake Gate" is pressed on the user interface screen shown in Figure 6, the information processing device 10 issues a control command to the water intake gate opening / closing drive unit 33 via the communication line N to open the water intake gate 3. When the "Close" button for "Water Intake Gate" is pressed, the information processing device 10 issues a control command to the water intake gate opening / closing drive unit 33 via the communication line N to close the water intake gate 3. Similarly, when the "Open" button or the "Close" button for "Drainage Gate" is pressed, a control command is issued to the drainage gate opening / closing drive unit 43 in the drainage gate 4.

[0044] In addition, when the "Inflate" button and "Deflate" button are pressed on the "Compartmentalized Water Bag" and "Boundary Complementary Water Bag," the information processing device 10 issues a control command via the communication line N to each pump driving unit to inflate the water bag by inflowing water from a water source W, etc., or to drive the pump to flow water out of the water bag to the water source W, etc., and to deflating the water bag.

[0045] On the user interface screen in Figure 6, the "Ensure storage capacity" button for "Before rainfall 1" is a button for issuing a command to control the water intake gate 3 and the drainage gate 4 so as to increase the water storage capacity in the target section, the depressed topography portion P, before rainfall. Specifically, based on a control command from the information processing device 10, the water intake gate 3 is closed and the drainage gate 4 is opened to stop the inflow of water from the water source W into the depressed topography portion P and to discharge water from the depressed topography portion P to the water source W, thereby increasing the water storage capacity in the depressed topography portion P, allowing the water that flows down to the downstream basin of the river during rainfall to be retained in the depressed topography portion P, and implementing flood control measures in the downstream basin of the river.

[0046] On the user interface screen in Figure 6, the "Expand storage capacity" button for "Before Rainfall 2" is a button for issuing a command to control the partition dividing water bags 5 and boundary complementing water bags 7 so as to expand the water storage capacity in the target partition, the concave topography portion P. Specifically, based on a control command from the information processing device 10, the partition dividing water bags 5 and boundary complementing water bags 7 are expanded to expand the water storage capacity in the concave topography portion P.

[0047] Here, with reference to Figure 7, we will explain why contracting the compartment dividing water bags 5 and boundary complementing water bags 7 ensures a sufficient storage capacity in the concave topography section P. Figure 7 is a schematic diagram of a cross section of the concave topography section P. This figure is a cross section of the concave topography section P cut by a vertical plane that includes a line connecting the upstream side and the downstream side. Also, Figure 7(A) is a diagram showing the compartment dividing water bags 5 and boundary complementing water bags 7 when both are contracted, and Figure 7(B) is a diagram showing the compartment dividing water bags 5 and boundary complementing water bags 7 when both are inflated.

[0048] Generally, rice paddies are higher on the upstream side and lower on the downstream side. The same is true for the depressed topography area P, which is an abandoned rice paddy, and Figure 7 exaggerates this.

[0049] In Figure 7(A), it is possible to secure a water storage capacity for the entire depressed topography section P at approximately water level WL0. On the other hand, in Figure 7(B), it is possible to secure a water storage capacity for the upstream section P1 at approximately water level WL1 formed by the section dividing water bags 5, and a water storage capacity for the upstream section P2 at approximately water level WL2 formed by the boundary supplementary water bags 7. As can be seen from the figure, the water storage capacity in Figure 7(B) is greater than that in Figure 7(A). As such, because there is a difference in elevation between the upstream and downstream sides of a paddy field, if an abandoned paddy field is used as the target section, it is possible to expand the storage capacity by inflating both the section dividing water bags 5 and the boundary supplementary water bags 7, which can contribute to flood control measures.

[0050] On the user interface screen of FIG. 6, the "Maintain Storage" button under "During Rainfall" is a button for issuing a command to control the opening and closing of the water intake gate 3 and the drainage gate 4 for the target area, the depressed topography portion P, based on a control command from the information processing device 10. Specifically, at the beginning of rainfall, the water intake gate 3 is opened and the drainage gate 4 is closed based on a control command from the information processing device 10, and water from the water source W is blocked at the depressed topography portion P, thereby contributing to flood control in the river downstream of the water source W. Furthermore, when rainfall continues and the amount of water that can be stored in the depressed topography portion P reaches its limit, both the water intake gate 3 and the drainage gate 4 are closed, allowing the storage of rainwater in the depressed topography portion P to continue.

[0051] On the user interface screen of FIG. 6 , the “Release Retained Water” button under “After Rainfall” is used to issue a command to the information processing device 10 to control the water intake gate 3, the discharge gate 4, the compartment dividing water bag 5, and the boundary complementing water bag 7 so as to discharge the water stored in the concave topography area P when clear weather is expected for the time being after a certain amount of time has passed since the rainfall, i.e., when there are no flood control problems in the downstream river basin even if the water stored in the concave topography area P flows down to the downstream river basin. Specifically, based on the control command from the information processing device 10, the water intake gate 3 is closed and the discharge gate 4 is opened to stop the inflow of water from the water source W into the concave topography area P, and water is discharged from the concave topography area P to the water source W. Furthermore, based on the control command from the information processing device 10, both the compartment dividing water bag 5 and the boundary complementing water bag 7 are contracted.

[0052] On the user interface screen of Figure 6, the "Mid-term drying" button for "Normal conditions" is a button for issuing a command to the information processing device 10 to control the water intake gate 3, the discharge gate 4, the partition dividing water bag 5, and the boundary complementing water bag 7 so that mid-term drying will be carried out in the target area, the concave terrain area P, when continued sunny weather is expected.

[0053] Intermediate drainage cuts off the water separating the soil from the atmosphere and dries the soil, providing a habitat for animals, plants, insects, etc. that prefer disturbance environments such as water level fluctuations, which is expected to lead to future biodiversity. To carry out this type of intermediate drainage, based on control commands from the information processing device 10, the water intake gate 3 closes and the drainage gate 4 opens, stopping the inflow of water from the water source W into the concave topography part P, and both the compartment dividing water bag 5 and the boundary supplementing water bag 7 contract.

[0054] As described above, the operations on the user interface screen of Fig. 6 were performed manually, with control commands being issued to each component from the information processing device 10. Below, we will explain the algorithm that automatically controls the water intake gates 3, discharge gates 4, compartment dividing water bags 5, and boundary complementing water bags 7 of the water control system 1 according to the present invention based on data from the meteorological data providing server 60, etc.

[0055] 8 is an example of a flowchart for controlling the water control system 1 according to the present invention before rainfall. Whether or not rainfall is about to occur can be determined in a timely manner based on data from the weather data providing server 60, etc.

[0056] 8, when the process starts in step S100, the process proceeds to step S101, where weather-related data is acquired from the weather data providing server 60. In step S102, it is determined whether the data forecasts rainfall within a predetermined time period in the target section.

[0057] If the result of the determination in step S102 is NO, the process proceeds to step S105, where the processing ends. On the other hand, if the result of the determination in step S102 is YES, the process proceeds to step S103, where the storage capacity in the target section, the depressed topography section P, is secured. Specifically, a command is issued to close the water intake gate 3, and a command is issued to open the water discharge gate 4. Next, the process proceeds to step S104, where a command is issued to expand both the section dividing water bag 5 and the boundary complementing water bag 7 in order to expand the storage capacity.

[0058] By performing the above-described processing, the storage capacity in the concave topography portion P is increased before rainfall, and the storage capacity is further expanded, thereby implementing flood control measures in the downstream area of ​​the river.

[0059] Next, the control process of the water control system 1 according to the present invention during rainfall will be described with reference to FIG.

[0060] 9 is an example of a flowchart for controlling the water control system 1 according to the present invention during rainfall. Whether or not it is raining can be determined in a timely manner based on data from the weather data providing server 60, etc.

[0061] 9, when the process starts in step S200, the process proceeds to step S201, where weather-related data is acquired from the weather data providing server 60. In step S202, it is determined whether the data indicates the current rainfall in the target section.

[0062] If the result of the determination in step S202 is NO, the process proceeds to step S204, where the process ends. On the other hand, if the result of the determination in step S202 is YES, the process proceeds to step S203, where a command is issued to open the water intake gate 3 and a command is issued to close the water discharge gate 4 in order to enable water storage in the target section, that is, the depressed topography portion P.

[0063] By performing the above-described processing, water from the water source W can be stored in the concave topography area P during rainfall, allowing for flood control and reducing the risk of flood damage in the downstream area of ​​the river.

[0064] Next, another control process of the water control system 1 according to the present invention during rainfall will be described with reference to FIG.

[0065] 10 is an example of a flowchart for controlling the water control system 1 according to the present invention during rainfall. Whether or not it is raining can be determined in a timely manner based on data from the weather data providing server 60, etc.

[0066] 10, when the process starts in step S300, the process proceeds to step S301, where weather-related data is acquired from the weather data providing server 60. In step S302, it is determined whether the data indicates the current rainfall in the target section.

[0067] If the result of the determination in step S302 is NO, the process proceeds to step S306, where the process ends. On the other hand, if the result of the determination in step S302 is YES, the process proceeds to step S303, where water level data is acquired from the upstream section water level gauge 21 and the downstream section water level gauge 22. Next, in step S304, it is determined whether each of the water level data from the upstream section water level gauge 21 and the downstream section water level gauge 22 is equal to or greater than a predetermined value set for each.

[0068] If the result of the determination in step S304 is NO, the process proceeds to step S306, where the process ends. On the other hand, if the result of the determination in step S304 is YES, the amount of water stored in the concave topography portion P is overflowing, so the process proceeds to step S305, where a command is issued to close both the water intake gate 3 and the water discharge gate 4 in order to maintain storage in the concave topography portion P.

[0069] By performing the above-described processing, it is possible to maintain water storage in the concave topography area P during rainfall, and to reduce damage caused by flooding in the downstream area of ​​the river.

[0070] Next, the control process of the water control system 1 according to the present invention after rainfall will be described with reference to FIG.

[0071] 11 is an example of a flowchart for controlling the water control system 1 according to the present invention after rainfall. Whether or not rainfall has occurred can be determined in a timely manner based on data from the weather data providing server 60, etc.

[0072] 11, when the process starts in step S400, the process proceeds to step S401, where weather-related data is acquired from the weather data providing server 60. In step S402, it is determined based on the data whether a predetermined time has passed since rain fell in the target section.

[0073] If the result of the determination in step S402 is NO, the process proceeds to step S405, where the process ends. On the other hand, if the result of the determination in step S402 is YES, the process proceeds to step S403, where a command is issued to close the water intake gate 3 and to open the water discharge gate 4 in order to discharge the water stored in the concave topography portion P. Furthermore, the process proceeds to step S404, where a command is issued to contract both the compartment dividing water bag 5 and the boundary complementing water bag 7 in order to reduce the storage capacity.

[0074] By carrying out the above-described process, it becomes possible to safely discharge water that has accumulated in the depressed topography portion P due to rainfall.

[0075] Next, the control process for transitioning to a flooding mode in the water control system 1 according to the present invention when fine weather continues will be described with reference to Figure 12. The water control system 1 according to the present invention can flood the target area, i.e., the depressed topography portion P, to maintain a shallow water depth and aim to restore the wetland ecosystem.

[0076] 12 is an example of a flowchart for controlling the water control system 1 according to the present invention when fine weather continues. Whether fine weather continues or not can be determined in a timely manner based on data from the weather data providing server 60, etc.

[0077] 12, when the process starts in step S500, the process proceeds to step S501, where weather-related data is acquired from the weather data providing server 60. In step S502, it is determined whether the data predicts that fine weather will continue for a predetermined period of time or longer.

[0078] If the result of the determination in step S502 is NO, the process proceeds to step S511 and ends. On the other hand, if the result of the determination in step S502 is YES, the process proceeds to step S503 and issues a command to inflate both the compartment dividing water bag 5 and the boundary complementing water bag 7 in order to expand the storage capacity.

[0079] Proceeding to step S504, water level data is acquired from the upstream section water level gauge 21 and the downstream section water level gauge 22. Next, in step S505, it is determined whether the water level data of the upstream section water level gauge 21 and the downstream section water level gauge 22 is equal to or less than a first value set for each.

[0080] If the result of the determination in step S505 is NO, the process proceeds to step S507. On the other hand, if the result of the determination in step S505 is YES, the amount of water stored in the concave topography portion P has fallen below the specified range for flooding, so in order to enable water storage in the concave topography portion P, which is the target section, a command is issued to open the water intake gate 3 and a command is issued to close the water discharge gate 4.

[0081] In step S507, it is determined whether or not the water level data of the upstream section water level gauge 21 and the downstream section water level gauge 22 are equal to or greater than the second value set for each.

[0082] If the result of the determination in step S507 is NO, the process proceeds to step S509. On the other hand, if the result of the determination in step S507 is YES, the amount of water stored in the depressed topography portion P exceeds the regulation for flooding, so in order to enable the discharge of water from the depressed topography portion P, which is the target section, a command is issued to open the water intake gate 3 and a command is issued to open the drainage gate 4.

[0083] In step S509, it is determined whether the water level data is within an appropriate range (above the first value and below the second value). If the determination result in step S509 is NO, the process returns to step S504, and if the determination result is YES, the process proceeds to step S510, where a subroutine for determining and executing mid-drying is executed.

[0084] By carrying out mid-term drainage in the target area and temporarily creating a dry environment in the target area, it is expected that organisms that prefer disturbance will be able to live and grow there, and that water quality will be improved. When fine weather continues, a shallow wetland is basically maintained by flooding. Then, based on on-site information on the target area, such as weather conditions and the state of vegetation, it is decided whether to carry out a drainage process for a certain period of time, and the flow for carrying out the mid-term drainage is the mid-term drainage decision / execution subroutine in step S510. Note that in the subroutine described below, the criteria for determining whether to carry out mid-term drainage are merely examples, and the present invention is not limited by such criteria.

[0085] In FIG. 13, when the processing of the mid-drying determination / execution subroutine is started in step S600, the process proceeds to step S601, where at least temperature data and humidity data are acquired from the weather observation unit 55.

[0086] In the next step S602, it is determined whether the temperature is above a predetermined level and the humidity is below a predetermined level based on the data obtained from the weather observation unit 55. Through these steps, it is determined whether the weather conditions are suitable for mid-day drying.

[0087] If the result of the determination in step S602 is NO, the process proceeds to step S609, where the process returns to the original main routine. On the other hand, if the result of the determination in step S602 is YES, the process proceeds to step S603, where image data of the depressed topography portion P is acquired from the target section image capturing unit 50. Next, in step S604, the image data acquired from the target section image capturing unit 50 is subjected to image analysis. Any method may be used for image analysis, but an image analysis method that can determine the growth status of plants and the presence or absence of animals and insects is adopted.

[0088] In step S605, it is determined whether plants of a predetermined height or more are growing at a predetermined density or more, and whether there are a predetermined number of animals or insects or not. If the result of the determination in step S605 is NO, the process proceeds to step S609 and returns to the original main routine. On the other hand, if the result of the determination in step S605 is YES, the process proceeds to steps S606 and S607 to execute the mid-drying mode.

[0089] In step S606, a command is issued to close the water intake gate 3 and a command is issued to open the water discharge gate 4 in order to discharge the water stored in the concave topography portion P. Furthermore, in step S607, a command is issued to contract both the compartment dividing water bag 5 and the boundary complementing water bag 7 in order to reduce the storage capacity.

[0090] By performing the above-described subroutine processing, a mid-term drying mode can be executed for the concave terrain area P, which is expected to encourage the habitation and growth of organisms that prefer disturbance in the concave terrain area P, and it is also expected that the water quality of the water stored in the concave terrain area P after the mid-term drying is executed will be improved.

[0091] In step S608, the process waits for a predetermined time (the expected interim drying period), and then the process proceeds to step S609 to return to the original main routine. When returning from the subroutine in Fig. 13, the process in the main routine in Fig. 12 ends in step S511.

[0092] As described above, the water control system 1 of the present invention comprises a water intake gate opening / closing drive unit 33 that drives the opening and closing of the water intake gate 3 for water intake and discharge in a target section of low-utilized land adjacent to a water source W, a drainage gate opening / closing drive unit 43 that drives the opening and closing of the drainage gate 4, and an information processing device 10 that receives weather data for the target section and sends control commands to the water intake gate opening / closing drive unit 33 and the drainage gate opening / closing drive unit 43.The water control system 1 of the present invention makes it possible to remotely manage water in low-utilized land upstream, thereby enabling the low-utilized land to function and improve as multifunctional green infrastructure, and enabling measures to control flooding in the river basin without building dams or widening rivers.

[0093] Furthermore, by actively controlling water, the water control system of the present invention can simultaneously contribute to biodiversity and water purification during normal times, as well as flood control during rainfall. [Explanation of symbols]

[0094] 1. Water Control System 3. Water intake gate 4. Drainage gate 5. Compartmented water bag 7. Boundary Complementary Water Bag 10. Information processing device 15. Compartmented water bag pump drive unit 17. Boundary supplement water bag pump drive unit 21. Upstream section water level gauge 22 Downstream section water level gauge 33 Water intake gate opening / closing drive unit 34. Intake gate flow meter 43 Drainage gate opening / closing drive unit 44···Drainage gate flow meter 50...Target area image capturing unit 55. Weather Observation Department 60 Weather data server 70···River water level data server N···Communication line P...concave topography P1: Upstream section P2: Downstream section R...ridge E... Boundary part D... Missing part W...Water source

Claims

1. 1. A water control system for controlling water intake and discharge on a target parcel of underutilized land adjacent to a water source, comprising: a water intake gate that draws water from the water source into the target area; A drainage gate is arranged at a position lower than the water intake gate and drains water from the target section to the water source; a water intake gate opening / closing drive unit that drives the water intake gate to open and close; a drainage gate opening / closing drive unit that drives the drainage gate to open and close; A water control system characterized by having an information processing device that receives weather data for a target area and issues control commands to the water intake gate opening / closing drive unit and the drainage gate opening / closing drive unit.

2. Water bags to be placed on targeted plots of underutilized land; 2. The water control system according to claim 1, further comprising a water bag pump drive unit that changes the capacity of the water bag based on a control command sent from the information processing device.

3. When the received weather data forecasts rainfall within a predetermined time period, the information processing device: Sending a control command to the water intake gate opening / closing drive unit to close the water intake gate; 2. The water control system according to claim 1, wherein a control command is sent to the drain gate opening / closing drive unit to open the drain gate.

4. Water bags to be placed on targeted plots of underutilized land; a water bag pump driver that changes the volume of the water bag based on a control command sent from the information processing device; When the received weather data indicates current rainfall, the information processing device:

2. The water control system according to claim 1, wherein a control command is sent to the water bladder pump drive unit to inflate the water bladder.

5. When the received weather data indicates current rainfall, the information processing device: Sending a control command to the water intake gate opening / closing drive unit to open the water intake gate; 2. The water control system according to claim 1, wherein a control command is sent to the drain gate opening / closing drive unit to close the drain gate.

6. The water level meter further includes a water level meter that acquires water level data in the target section and transmits the acquired water level data to the information processing device; When the received weather data indicates current rainfall and the received water level data is equal to or greater than a predetermined value, Sending a control command to the water intake gate opening / closing drive unit to close the water intake gate; 2. The water control system according to claim 1, wherein a control command is sent to the drain gate opening / closing drive unit to close the drain gate.

7. When it is determined that a predetermined time has passed since the rainfall based on the received weather data, the information processing device: Sending a control command to the water intake gate opening / closing drive unit to close the water intake gate; 2. The water control system according to claim 1, wherein a control command is sent to the drain gate opening / closing drive unit to open the drain gate.

8. Water bags to be placed on targeted plots of underutilized land; a water bag pump driver that changes the volume of the water bag based on a control command sent from the information processing device; When the information processing device determines that a predetermined time has passed since the rainfall based on the received weather data, 2. The water control system according to claim 1, wherein a control command is sent to the water bladder pump drive unit to contract the water bladder.

9. a temperature observation unit that acquires temperature data and humidity data in a target section and transmits the acquired temperature data and humidity data to the information processing device; Water bags to be placed on targeted plots of underutilized land; a water bag pump driver that changes the volume of the water bag based on a control command sent from the information processing device; When the received weather data predicts that fine weather will continue for a predetermined period or more, the received temperature data is equal to or greater than a predetermined value, and the received humidity data is equal to or less than a predetermined value, Sending a control command to the water intake gate opening / closing drive unit to close the water intake gate; Sending a control command to the drainage gate opening / closing drive unit to open the drainage gate; 2. The water control system according to claim 1, wherein a control command is sent to the water bladder pump drive unit to contract the water bladder.

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