JP7418288B2 - Water supply and distribution management systems, field water management equipment, and irrigation water management equipment - Google Patents

Description

The present invention relates to a water supply and distribution management system, a field water management device, and an irrigation water management device.

In recent years, field water management systems that can automatically supply water by remotely controlling water supply devices provided in each field are being put into practical use. For example, Patent Document 1 proposes a field water management system that determines a daily target water level in a rice field according to the growth stage of rice and controls a water supply valve so that the water level in the rice field is within the vicinity of the target water level. .

In addition, an irrigation water management system has been proposed in which irrigation water taken from a headwork and guided to a pumping station is distributed to each field group, which is a collection of fields, via a water diversion work or the like. For example, Patent Document 2 describes a main pump station for supplying water from a water source to each field group, and a main pump station for receiving irrigation water supplied from the main pump station and supplying water to each terminal field in the field group. An irrigation water management system has been proposed that can distribute a predetermined amount of irrigation water from a water source to each field group by remotely controlling sub-storage pump stations and water diversion valves installed in each field group from a central management department. There is.

Japanese Patent Application Publication No. 09-65776 Japanese Patent Application Publication No. 10-42726

In the irrigation water management system as described in Patent Document 2, a plurality of pumps for pumping water are installed at each pumping station, and a predetermined amount of water distribution that is approximately required during a preset time period is maintained. Each pump was under operational control.

However, the configuration did not allow for real-time management of the exact amount of water needed for each field group, so for example, pressure-feeding pumps were installed to directly distribute pumped water to the field groups via water pipes. At the existing pumping stations, the pumps had to be operated constantly even under conditions where the required amount of water distribution was low and efficiency decreased, which led to high maintenance costs such as electricity bills.

In addition, even at pumping stations that have pumps that store pumped water in a regulating tank such as a distribution reservoir, the pumps are operated based on the water level in the regulating tank, resulting in water being stored to an unnecessary level. Maintenance costs were high.

In view of the above-mentioned problems, an object of the present invention is to provide a water supply and distribution management system that can properly operate and manage pumps to reduce maintenance costs such as electricity costs while distributing sufficient water to each field group. The present invention provides a field water management device and an irrigation water management device.

In order to achieve the above object, the first characteristic configuration of the water supply and distribution management system according to the present invention includes a field water management device that manages water supply to each field in units of a field group, which is an aggregate of fields, and a plurality of field water management devices. A water supply and distribution management system comprising: an irrigation water management device that manages the amount and time of water distribution to each field group via a water distribution pump; A field management unit that collects water supply status information of each field; a required water supply amount calculation unit that calculates the required water supply amount for each field group based on the water supply status information of each field; a water supply control unit for remote control; and a water supply amount notification unit that outputs the required water supply amount for each field group to the irrigation water management device; The system is equipped with a water distribution management section that manages the number of operating pumps and operating hours of each water distribution pump based on the required water supply amount.

In the field water management device, the required water supply amount calculating section calculates the required water supply amount for each field group based on the water supply status information of each field managed by the field management section. The calculated required water supply amount for each field group is transmitted to the irrigation water management device via the water supply amount reporting section. The water distribution management unit provided in the irrigation water management device will be able to appropriately manage the number of operating water distribution pumps and the operating hours without excess or deficiency, based on the transmitted required water supply amount for each field group. The irrigation water distributed to each field group is appropriately supplied to each field by the water supply control section controlling the opening and closing of the water taps in each field.

In addition to the above-mentioned first characteristic configuration, the second characteristic configuration is such that the required water supply amount calculation unit supplies required water for each of the field groups to the fields determined to be in an operating state by the field management unit. The point is to calculate the amount.

Based on the operational status of each field managed by the field management department, the required water supply amount is calculated only for fields that require water supply, excluding fields that do not require irrigation even if they are fallow or under cultivation. As a result, the required amount of water supply for each field group, which is the aggregate value, can be appropriately calculated.

The third characteristic configuration is that, in addition to the second characteristic configuration described above, when the operating state is a constant irrigation mode, the required water supply amount calculation section is configured to calculate the water level information of each field included in the water supply state information. Based on this, the water demand depth, which is the difference between the set water level and the current water level for each field, is calculated, and the required water supply amount Q for each field group is calculated as Q = Σ (demand water depth x field area). be.

When a field is operated in constant irrigation mode, the required water supply amount Q for each field group is Q = Σ (demand water depth x field area), that is, the required water depth of each field constituting the field group and the field area. It is calculated by adding the amount of water determined by the product of area for each field.

The fourth characteristic configuration is that, in addition to the second or third characteristic configuration described above, when the operating state is the continuous flow mode, the required water supply amount calculation unit The point is that the required amount of water supply for each field group is calculated based on the opening degree information of the water taps.

When the fields are operated in continuous flow mode, the required water supply amount for each field group can be calculated by summing up the water supply amount obtained from the opening degree information of the water taps in each field.

The fifth characteristic configuration is that, in addition to the second or third characteristic configuration described above, when the operating state is the constant irrigation mode, the water supply control unit controls each water supply based on a preset priority. The point is to control the stopper.

For example, if the water intake from the water source is not sufficient and the amount of irrigation water distributed per hour is limited, opening the water taps of the fields that require water supply to each field group at the same time will reduce the water supply pressure. This decreases and makes it difficult to supply water efficiently. Even in such a case, water can be efficiently supplied by staggered water supply to a group of fields and/or fields to be watered.

In the sixth characteristic configuration, in addition to the fifth characteristic configuration described above, the priority is set based on the required water supply amount Q, and the priority is set from a group of fields with a large value of the required water supply amount Q to a field group with a small value of the required water supply amount Q. The points are set in the order of the groups.

For example, in a field group where the required amount of water supply Q is relatively large, the water level is significantly lower than the set water level and there is little time leeway to affect the crops being grown, and the required amount of water supply Q is relatively small. It is assumed that in the field group, the water level has not dropped much from the set water level and there is a lot of time leeway to affect the crops being grown. Therefore, by preferentially supplying water to the field group where the required water supply amount Q is relatively large, the influence on the crops being grown can be reduced.

In the seventh characteristic configuration, in addition to the fifth characteristic configuration described above, the priority is set based on the water demand depth, and for the same field group, the priority is set from a field with a large value to a small value of the water demand depth. This is because they are set in the order of the fields.

Even within the same field group, it is assumed that fields where the water level has significantly decreased from the set water level will have less time to affect the crops being grown, so priority should be given to such fields. By supplying water, it becomes possible to reduce the impact on the crops being grown.

In the eighth characteristic configuration, in addition to the fifth characteristic configuration described above, the priority is set based on the water demand depth, and for a plurality of field groups, the priority is set from a field with a large value to a small value of the water demand depth. This is because they are set in the order of the fields.

Among multiple field groups, it is assumed that fields where the water level has significantly decreased from the set water level will have less time to affect the crops being grown, so such fields should be given priority water supply. By doing so, it becomes possible to reduce the impact on the crops being grown.

The ninth characteristic configuration is that, in addition to any of the characteristic configurations of the first to eighth aspects described above, the field management section is capable of visually identifying the operating status and water level of each field included in each field group. The present invention is characterized in that it includes an image display processing unit that generates a monitor image to be displayed in a specific manner and displays the monitor image in response to a request from an external device.

For example, when a farmer operates an external device such as a smartphone that he or she owns and sends a request to the field management department to display a monitor image, the image display processing section provided in the field management department generates an image of the operation of each field. A monitor image showing the status and water level is displayed on an external device such as a smartphone owned by the farmer. Farmers will be able to quickly check the water level in their fields by visually checking the monitor image.

The characteristic configuration of the field water management device according to the present invention is a field water management device that is incorporated into a water supply and distribution management system having any of the characteristic configurations from the first to ninth characteristics described above, and manages the operating status of each field. At the same time, there is a field management unit that collects water supply status information of each field, a required water supply amount calculation unit that calculates the required water supply amount for each field group based on the water supply status information of each field, and a water supply amount calculation unit that calculates the required water supply amount for each field group based on the water supply status information of each field. The present invention is characterized in that it includes a water faucet remote control unit that remotely controls opening and closing, and a water supply amount reporting unit that outputs the required water supply amount for each field group to the irrigation water management device.

In addition to the above-mentioned first characteristic configuration, the second characteristic configuration is such that when the operating state is a constant irrigation mode, the required water supply amount calculation unit is configured to calculate the water level information of each field included in the water supply status information. Based on this, the water demand depth, which is the difference between the set water level and the current water level for each field, is calculated, and the required water supply amount Q for each field group is calculated as Q = Σ (demand water depth x field area). The point is that it is structured.

The third characteristic configuration is that, in addition to the first or second characteristic configuration described above, when the operating state is the continuous flow mode, the required water supply amount calculation unit The present invention is configured to calculate the required water supply amount for each field group based on the opening degree information of the water taps.

A characteristic configuration of the irrigation water management device according to the present invention is an irrigation water management device incorporated in a water supply and distribution management system having any of the first to ninth characteristic configurations described above, wherein the irrigation water management device receives notification from the water supply amount notification unit. The system is equipped with a water distribution management section that manages the number of operating pumps and operating hours of each water distribution pump based on the required water supply amount.

As explained above, according to the present invention, there is provided a water supply and distribution management system that can appropriately operate and manage pumps to reduce maintenance costs such as electricity costs while distributing sufficient water to each field group. We are now able to provide water management equipment and irrigation water management equipment.

Illustration of irrigation water equipment Explanatory diagram of the field Diagram of water supply and distribution management system Explanatory diagram of monitor image Water distribution control flowchart Flowchart of water supply amount notification control Water supply control flowchart Explanation diagram of updated monitor image

Below, a water supply and distribution management system, a field water management device, and an irrigation water management device according to the present invention will be explained. The term "field" used in the following explanation refers to both rice paddies and fields, and a field group refers to a plurality of fields that are supplied with irrigation water from a common water distribution system that is divided from a water source by a diversion works or the like. Furthermore, a large-scale field group is composed of a plurality of block field groups, and the necessity of water supply is managed for each block field group. Normally, irrigation water taken from a common water source is supplied to different groups of fields through multiple water distribution systems separated by diversion works or the like. In the following embodiments, a field for growing rice will be described, but the same applies to a field for cultivation.

[Configuration of irrigation water equipment]
As shown in FIG. 1, the irrigation water equipment includes a main water pipe 120, a branch water pipe 121, and a water pipe 121, which is a main water pipe, and a water pipe 121 that is a branch pipe. This is equipment for sending water to each field 1 via a water supply pipe 100 connected to a water pipe 121.

In this embodiment, for convenience, the delivery of irrigation water managed by the irrigation water management device is referred to as water distribution, and the delivery of irrigation water to the field managed by the field water management device is referred to as water supply.

Irrigation water taken at the pumping station 131 is directly pumped to the drain pipe 120 via the pressure pump 131P, or via the pump 131P to the distribution reservoir 122 (indicated by a broken line in FIG. 1) which is a regulating tank. ), the water is then conveyed from the water distribution reservoir 122 to the water distribution pipes 120 by gravity. In either case, the pump 131P is basically configured with a single or a plurality of two pumps that are operated alternately, and when the amount of water to be fed increases, both pumps are operated simultaneously.

Hereinafter, in this embodiment, a case will be described in which a pressure pump 131P is used. Note that in this specification, a water pump or a pressure pump may be referred to as a water distribution pump due to its function of distributing irrigation water to each field group.

The main water distribution pipe 120 is branched toward each field group 10, and a water diversion device 140 is provided that functions as a water diversion facility for adjusting the amount of water distributed to each branched water distribution pipe 121. That is, the irrigation water pumped from the pump station 131 is sent to each field group 10 via the water supply pipe 100 after the water distribution amount is adjusted by the water distribution device 140.

Each field 1 arranged along the water supply pipe 100 is provided with a water supply device 2 equipped with a water tap connected to the water supply pipe 100 so that water can be supplied thereto. Furthermore, each field 1 is provided with a drainage device 4 equipped with a drain plug, and is configured such that water discharged from each field 1 via the drainage device 4 is discharged into the river via a drainage channel 9. .

[Composition of field equipment]
As shown in FIG. 2, a field 1 includes a water supply device 2 equipped with a water tap that guides irrigation water flowing into a water supply pipe 100 to the field 1 via a water conduit 3, and a water supply system 2 that discharges water from the field 1. A drainage device 4 equipped with a drain plug for discharging water into a drainage channel 9 via a waterway 5, a water level sensor 6 for measuring the water level in the field 1, and the like are provided.

The water supply device 12 and the drainage device 16 include a power storage device equipped with a solar panel SP, an electric motor that drives a water tap or a drain tap, a control circuit that controls the electric motor, a communication circuit that performs wireless communication via a wireless repeater 7, and the like. A motor for driving a water tap and a drain tap, a communication circuit, etc. are configured to operate using the electric power of a condenser in which electric power generated by the solar panel SP is stored.

A wireless repeater 7 that can be connected to a communication network such as the Internet is installed near the field 1, and the communication circuits provided in the water supply device 2 and the drainage device 4 function as a field water management device via the wireless repeater 7. It is configured to be able to communicate with the field water management server 21. The status of the hydrant or drain valve and the water level in each field 1 detected by the water level sensor 6 are transmitted to the field water management server 21, and the field water management server 21 determines the amount of water supplied and/or drained through the hydrant. The drainage water level through the tap can be adjusted by remote control.

[Configuration of water supply and distribution management system]
Returning to FIG. 1, the pressure pump 131P provided at the pumping station 131 is provided with a control circuit and a communication circuit, and is configured to be able to communicate with the irrigation water management server 31 functioning as an irrigation water management device via the communication circuit. There is. Each water diversion device 140 provided in the water distribution pipes 120, 121 connecting the pumping station 131 and each field group 10 is provided with a flow rate adjustment valve for water diversion, a control circuit and a communication circuit for controlling the flow rate adjustment valve, It is configured to be able to communicate with the irrigation water management server 31 via a communication circuit. The irrigation water management server 31 remotely controls the pressure pump 131P provided at the pump station and the flow rate adjustment valve provided in the water diversion device 140.

Taking paddy rice cultivation as an example, a sufficient amount of water is supplied to the field and puddling is performed, deep water management is continued for a while after rice planting to protect the rice, and once the rice has stabilized to a certain extent, shallow water management is followed by intermittent watering. It is necessary to adjust the water level in the field as the rice grows, such as restarting intermittent watering after drying the rice for a period of time to encourage root growth and suppress the growth of stems, and draining water at harvest time.

When the water supply periods for each field overlap, such as during the puddling season, and it is necessary to supply a large amount of water at the same time, a rotation system is used to ensure that a certain amount of irrigation water secured at the water source is distributed fairly to each field. It is necessary to plan and manage water supply schedules for each field group.

In constant irrigation modes such as deep water management and shallow water management, where the water level in each field is maintained at the set water level, it is also necessary to replenish the amount of water that has dropped from the set water level on a daily basis due to the effects of reduced water depth such as evaporation, transpiration, and infiltration. be.

In addition, in order to avoid high-temperature damage or low-temperature damage to crops during abnormally high or low temperatures, it may be necessary to continuously supply water to field 1, and even in such a continuous water supply mode, each field 1 Adequate water supply is required.

However, depending on the water pressure of the water supply pipes, it may not be possible to supply a sufficient amount of water even to fields in the same field group, and if the water tap continues to be opened even after the specified amount of water has been supplied, water will not be supplied to other fields. Sometimes the quantity is insufficient.

Furthermore, even in rice cultivation, water supply times may vary depending on the variety of rice, making it extremely difficult to plan and manage the supply of water in the right amount at the right time, depending on the unique conditions of each field.

Furthermore, since the irrigation water management server 31 cannot grasp fluctuations in the amount of water supplied to each field group 10, it is necessary to constantly operate the pressure pump 131P even when the required amount of water supply decreases. There was also the problem of increased power consumption.

In order to flexibly deal with such problems, the water supply and distribution management system according to the present invention enables farmers to This is a system that allows irrigation water to be supplied appropriately according to the conditions of each field managed by the farm.

Specifically, as shown in FIG. 3, the water supply and distribution management system 200 includes a field water management system 20 and an irrigation water management system 30.

The field water management system 20 includes a field water management server 21, a terminal device 8 owned by a farmer, etc., and a water supply device 2, a drainage device 4, a water level sensor 6, etc. provided in each field 1. . The terminal device 8 includes a portable terminal device such as a smartphone or a tablet computer, and a stationary terminal device such as a desktop computer.

The field water management server 21 included in the field water management system 20 is provided with functional blocks such as a field management section 21A, a required water amount calculation section 21B, a water supply amount notification section 21C, a water supply control section 21D, and an image display processing section 21E. ing.

The field water management server 21 is equipped with a CPU board, a memory board, a communication board, a large-capacity external storage device, etc., and the application program stored in the memory provided on the memory board is executed by the CPU mounted on the CPU board. By doing so, each functional block described above is realized.

The field management unit 21A manages the operating state of each field 1 and collects water supply state information of each field 1. The operating status includes information that identifies whether the crop is under cultivation or fallow, and if it is under cultivation, it includes information that identifies whether it is puddling, deep water management, shallow water management, mid-drying, intermittent irrigation, falling water, or running water. This information is mainly input from the farmer's terminal device 8.

The water supply status information is information indicating the water supply status of each field 1, and includes the set water level, the current water level, the opening degree of the water tap, and the like. The set water level refers to the drainage water level that is input from the farmer's terminal device 8 and is set to the drain valve provided in the drainage device 4. The current water level refers to the water level in the field 1 detected by the water level sensor 6, and the water level refers to the water level in the field 1 that is detected by the water level sensor 6. The degree is input from the water supply device 2 and refers to the opening degree of the water tap provided in the water supply device 2.

The required water supply amount calculation unit 21B calculates the required water supply amount for each field group in real time based on the water supply status information of each field 1. Specifically, the total amount of required water supply calculated at each predetermined time is calculated for each field group based on the operating status of each field 1 included in each field group 10, the set water level, the current water level, the opening of the water tap, etc. This is the required amount of water supply. The specific value of the predetermined time is not particularly limited, and may be any time interval that can ensure real-time performance, such as every 30 minutes or every hour. Normally, water supply is controlled to each field group on a daily basis, and the water supply is set at intervals of every 30 minutes or every hour until the water supply to each field is completed within the day. Bye.

For example, when the operating state is constant irrigation mode, the required water supply amount calculation unit 21B calculates the demand, which is the water level difference between the set water level of each field and the current water level, based on the water level information of each field included in the water supply state information. By calculating the water depth, the required water supply amount Q to each field group can be calculated as Q = Σ (demand water depth x field area).

Here, fields that are fallow and fields that have an extremely small water demand depth even if they are under cultivation are excluded from the fields that are subject to calculation of the required water supply amount Q. A field with extremely low water demand is a field where the water loss depth, which is the amount of evaporation, transpiration, and infiltration, is small.

The amount of water required for each field 1 is determined by the product of the water demand depth and the field area of each field 1, and by adding the amount of water required for each field 1, the required water supply amount Q for each field group 10 is calculated. Seek. When the field water management server 21 manages a plurality of field groups 10, the total amount of the required water supply amount Q of each field group 10 becomes the required water supply amount.

For example, when the operating state is the continuous flow mode, the required water supply amount calculation unit 21B calculates the required water supply amount for each field group 10 based on the opening degree information of the water tap of each field included in the water supply state information. be able to. The amount of water supplied per unit time calculated from the opening degree information of the water tap is the required amount of water at that point, and the product of the amount of water supplied per unit time and the running time is the total amount of water required for that field 1. Become. The total amount of water supplied per unit time to each of the fields 1 constituting the farm field group 10 is the required water supply amount at that time.

The water supply amount notification unit 21C outputs the required water supply amount for each field group calculated by the required water supply amount calculation unit 21B to the irrigation water management server 31. As described later, the irrigation water management server 31 adjusts the pressure pump 131P and the field group water distribution amount adjustment device 14 based on the required water supply amount for each field group.

The water supply control unit 21D is a functional block that remotely controls the opening and closing of water supply faucets in each field, and is configured to control each water supply faucet based on a preset priority when the operating state is constant irrigation mode. has been done.

When the amount of irrigation water distributed per hour is limited, if the water taps of field 1 that require water supply to each field group 10 are opened all at once, the water supply pressure will drop and water cannot be supplied efficiently. Even in such a case, water can be efficiently supplied by temporally shifting the field groups and/or fields to be watered.

It is preferable that the priority is set based on the required water supply amount Q, and is set in the order of the required water supply amount Q from a group of fields with a large value to a group of fields with a small value.

For example, in field group 10 where the required water supply amount Q is relatively large, the water level has significantly decreased from the set water level and there is little time leeway to affect the crops being grown, and the required water supply amount Q is relatively large. It is assumed that in the field group 10 with a small number of fields, the water level has not decreased much from the set water level and there is a large amount of time to affect the crops being grown. Therefore, by preferentially supplying water to the field group where the required water supply amount Q is relatively large, the influence on the crops being grown can be reduced.

Moreover, the priority is set based on the water demand depth, and it is preferable that the priority is set in the order of the water demand depth from the field 1 with a large value to the field 1 with a small value for the same field group 10.

Even in the same field group 10, it is assumed that in a field 1 where the water level has significantly decreased from the set water level, there will be less time to affect the crops being grown. By preferentially supplying water, it becomes possible to reduce the impact on the crops being grown.

Furthermore, it is preferable that the priority is set based on the water demand depth, and for the plurality of farm fields 10, the priority is set in the order of the water demand depth from field 1 with a large value to field 1 with a small value.

The field management section 21A or the water supply control section 21D may be configured to be able to set the plurality of priorities described above and provide a priority switching section for switching which priority is to be enabled.

In addition, when setting priorities based on the required water supply amount Q and water demand depth, for example, the optimal priority can be set based on data such as the required water supply amount Q of a field group, the required water depth of the field, the address of the field, and the weather. A machine learning device using AI to be set may be provided to control water supply based on the priority set by the machine learning device.

As input information to the machine learning device, in addition to the above-mentioned information, it is also possible to use the variety of rice grown in the field 1 and the cultivation period described below, such as deep water management, shallow water management, intermittent irrigation, etc.

Among the plurality of field groups 10, it is assumed that field 1 whose water level has significantly decreased from the set water level has less time to affect the crops being grown, so it is given priority over such field 1. By supplying water regularly, the impact on the crops being grown can be reduced.

The image display processing unit 21E is a functional block included in the field management unit 21A, and generates a monitor image that displays the operating status and water level of each field 1 included in each field group 10 in a manner that can be visually identified. It is configured to display a monitor image in response to a request from the device 8.

FIG. 4 shows an example of a monitor image. Irrigation water taken from a water source 130 is distributed to two field groups 10A, 10B via water distribution pipes 120, 122 and water supply pipe 100 by two pressure pumps 131P. Each field group 10A, 10B is composed of 12 fields 1, and a water tap V is installed in each field 1. Although not shown, each farm field 1 is also provided with a drain plug for keeping the water level in the field 1 at a set water level.

In the monitor image, each field 1 is painted in a different display color according to its water demand depth, and the water demand depth of each field 1 can be confirmed by visually checking the display color. There is.

The irrigation water management system 30 includes an irrigation water management server 31 and a water diversion device 140 that functions as a field group water supply amount adjustment device 140 that adjusts the amount of water supplied from the distribution reservoir 122 to each field group 10. The total amount of water distributed to each field group 10 is adjusted by the field group water supply amount adjustment device 140.

The irrigation water management server 31 includes a water distribution management unit 31A that manages the number of operating units and operating hours of each pressure pump 131P based on the required water supply amount notified from the water supply amount reporting unit 21C, and a total amount of irrigation water that can be delivered. Each functional block of the water distribution schedule management unit 31B is provided, which adjusts the amount of water distributed to each field group 10 based on the required amount of water supply.

The irrigation water management server 31 is equipped with a CPU board, a memory board, a communication board, a large-capacity external storage device, etc., and an application program stored in the memory provided on the memory board is executed by the CPU mounted on the CPU board. By doing so, each functional block described above is realized.

The water distribution schedule management unit 31B adjusts the amount of water distributed to each field group 10 based on the total amount of irrigation water that it manages and can send, and the total amount of required water supply reported from the water supply amount reporting unit 21C. do. When it is difficult to simultaneously supply the required amount of water to all the field groups 10, by controlling the field group water distribution amount adjusting device 140 in a preset order or a preset distribution ratio, Adjust the amount of water sent to.

For example, water is sent to a corresponding single field group or multiple field groups according to a preset time interval, the amount of water is adjusted in order from the field group 10 with the highest required water supply amount to the field group 10 with the lowest required water supply amount, or the required water supply amount is The field group water distribution amount adjustment device 140 is controlled so as to supply water to each field group 10 according to the ratio. Of course, if the total amount of irrigation water that is managed and can be delivered is greater than the total required water supply amount, such adjustment of the water distribution amount is not necessary.

The water distribution management unit 31A appropriately controls the number and/or operation time of the pressure pumps 131P to increase to match the required water supply amount when the required water supply amount increases, and when the required water supply amount decreases, the required water supply amount increases. As a result of appropriately controlling the number of operating pumps 131P and/or the operating time to reduce accordingly, it becomes possible to suppress wasteful power consumption required by the pressure pumps 131P.

Hereinafter, the procedure of water supply and distribution control executed by the water supply and distribution management system 200 will be explained in detail based on a flowchart.

As shown in FIG. 5, the water distribution management unit 31A of the irrigation water management server 31 acquires the amount of water that can be distributed taken from the pumping station (SA1), and also acquires the amount of water that can be distributed from the water supply amount notification unit 21C provided in the field water management server 21. Once the required amount of water supply for each field group is obtained (SA2), if it is determined that the amount of water that can be distributed is lower than the required amount of water supply for each field group (SA3, N), the water distribution schedule for each field group, that is, water distribution time period and amount of water distribution, is determined. (SA4), adjusts and controls each field group water distribution amount adjustment device 14 (SA5), drives and controls the pressure pump 131P (SA6), and notifies the field water management server 21 of the water distribution schedule to each field group. (SA7). Steps SA1 to SA7 are repeatedly executed at predetermined intervals. That is, the operating time and number of operating pumps 131P are appropriately controlled in accordance with the required water distribution amount in accordance with the required water supply amount, which is updated as appropriate.

In step SA3, if it is determined that the amount of water that can be distributed exceeds the required amount of water supply for each field group (SA3, Y), the water distribution amount adjustment device 14 for each field group is adjusted so that the required amount of water is distributed to each field group. control (SA7), and notifies the field water management server 21 of the water distribution schedule to each field group (SA6).

As shown in FIG. 6, the field management unit 21A of the field water management server 21 collects management information for the fields 1 belonging to each field group 10, and stores the management information in the memory (SB1). The management information includes information regarding the operating state of each field 1 and information regarding the water supply state of each field 1.

As mentioned above, the operating status includes information that identifies whether the cultivation is in progress or fallow, and if cultivation is in progress, it indicates whether it is puddling, deep water management, shallow water management, mid-drying, intermittent irrigation, falling water, or running water. This information includes identification information and is mainly input from the farmer's terminal device 8. Moreover, the water supply state is information indicating the water supply state of each field 1, and includes the set water level, the current water level, the opening degree of the water tap, and the like. The set water level refers to the drainage water level that is input from the farmer's terminal device 8 and is set to the drain valve provided in the drainage device 4. The current water level refers to the water level in the field 1 detected by the water level sensor 6, and the water level refers to the water level in the field 1 that is detected by the water level sensor 6. The degree is input from the water supply device 2 and refers to the opening degree of the water tap provided in the water supply device 2.

The required water supply amount calculating section 21B calculates the required water supply amount for each field 1 described above based on the management information collected by the field management section 21A and stored in the memory, and also calculates the required water supply amount for the field group 10 to which the field belongs. is calculated, and the same arithmetic processing is executed for all the farm fields 10 under management, and the results are stored in the memory (SB2, SB3).

When the process of calculating the required water supply amount for the entire field group 10 is completed (SB3, Y), the water supply amount reporting unit 21C reads the calculation result from the memory and reports it to the water distribution management unit 31A of the irrigation water management server 31 ( SB4). The processes from step SB1 to step SB4 are repeated at predetermined intervals, and the water distribution management unit 31A is always notified of the latest required water supply amount. Although the predetermined time is not particularly limited, it is preferably set in a range from several tens of minutes to several hours.

As shown in FIG. 7, when the water distribution schedule is acquired from the irrigation water management server 31 (SC1), the field management section 21A and the water supply control section 21D cooperate to adjust the water supply device 2 provided in each field 1 according to the water supply mode. control and manage water supply.

If it is the constant irrigation mode, a group of fields 10 that can be watered is identified according to the water distribution schedule, and water is supplied to each field 1 in any of the above-mentioned priority orders (SC3). During the water supply process, the latest water level information is obtained according to the input from the water level sensor 6 provided in each field 1, so the image display processing unit 21E provided in the field management unit 21A displays the monitor image of the corresponding field group 10. (SC4). When the water supply to the entire field group 10 is completed (SC5), the system waits to obtain the next water distribution schedule.

When the water absorption mode is the continuous flow mode, the water supply device 2 provided in each field 1 is controlled so that water can be supplied to the necessary fields 1 according to the water distribution schedule (SC6). Specifically, the opening degree of the water tap provided in the water supply device 2 provided in each field 1 is adjusted so that water can be supplied to each field according to the water distribution schedule.

When a certain amount of water can be supplied, the water tap is controlled to a preset opening degree, and when the amount of water distribution is insufficient, water is supplied at a smaller opening than the preset opening degree. In addition, the water tap may be controlled to open and close on an hourly basis, although it is not necessary to constantly run water.

Furthermore, each field 1 may be provided with a temperature sensor, configured to acquire the water temperature detected by the temperature sensor, and the water taps of each field may be controlled based on the water temperature. For example, water may be supplied with priority determined based on water temperature. In the continuous running mode for abnormally high temperatures, water can be supplied preferentially to fields with high water temperature, and in the continuous running mode for abnormally low temperatures, water can be supplied preferentially to fields with low water temperature.

During the water supply process, the latest water level information, hydrant opening information, and water temperature information if necessary can be obtained according to the input from the water level sensor 6 provided in each field 1. The image display processing unit 21E updates a monitor image showing the water level, valve opening, water temperature, etc. of the corresponding field group 10 (SC7).

FIG. 8 shows the progress of the water supply control in the above-described constant irrigation mode based on the monitor image of the field group 10 before water supply shown in FIG. Water is supplied from the fields in the field group 10B that show a large value of water demand depth, and most of the fields in the field group 10B have a water demand depth of 0 cm, and some of the fields that show a large value of water demand depth in the field group 10A have a water demand depth of 0 cm. It is shown that the distance was 0 cm.

By visually checking such a monitor image via a terminal device, a farmer can understand the situation appropriately and quickly.

In the embodiment described above, an example in which the pumping station 131 is equipped with a pressure pump (distribution pump) has been described, but even in an example in which the pumping station 131 is equipped with a pumping pump (distribution pump) and water is pumped to the distribution reservoir 122, water distribution can be performed in the same way. The management unit 31A can manage the number of operating pumps and operating hours of each water pump (water distribution pump) based on the required water supply amount notified from the water supply amount notification unit 21C.

For example, when the required amount of water supply is large, the target water level of the distribution reservoir 122 is raised, and when the required amount of water supply is small, the target water level of the distribution reservoir 122 is lowered, and the amount of pumped water is adjusted to match the demand, thereby reducing power consumption. can be suppressed.

The embodiments described above are merely examples of the present invention, and the technical scope of the present invention is not intended to be limited by the description. It goes without saying that the specific configuration can be modified and designed as appropriate within the scope of achieving the effects of the present invention.

1: Field 2: Water supply device 3: Headrace channel 6: Water level sensor 8: Terminal 10: Field group 20: Field water management system 21: Field water management device (field water management server)
21A: Field management section 21B: Required water supply amount calculation section 21C: Water supply amount reporting section 21D: Water supply control section 21E: Image display processing section 30: Irrigation water management system 31: Irrigation water management device (irrigation water management server)
31A: Water distribution management department 31B: Water distribution schedule management department 100: Water supply pipe 120: Water pipe (main line)
121: Water pipe (branch line)
122: Distribution reservoir 130: Water source pond 131: Pumping station 131P: Lifting pump (pressure pump)
140: Field group water distribution amount adjustment device 200: Water supply and distribution management system

Claims (13)

A field water management device that manages water supply to each field based on a field group, which is a collection of fields, and an irrigation water management device that manages the amount and time of water distribution to each field group via multiple water distribution pumps. A water supply and distribution management system comprising:
The field water management device includes a field management unit that manages the operational status of each field and collects water supply status information of each field, and calculates the required water supply amount for each field group based on the water supply status information of each field. a water supply control unit that remotely controls opening and closing of water taps in each field; and a water supply amount reporting unit that outputs the required water supply amount for each field group to the irrigation water management device. ,
A water supply and distribution management system, wherein the irrigation water management device includes a water distribution management section that manages the number of operating pumps and operating hours of each water distribution pump based on the required water supply amount notified from the water supply amount notification section. 2. The water supply and distribution management system according to claim 1, wherein the required water supply amount calculation unit calculates the required water supply amount for each field group for the fields determined to be in operation by the field management unit. When the operating state is constant irrigation mode, the required water supply amount calculation unit calculates the demand, which is the water level difference between the set water level of each field and the current water level, based on the water level information of each field included in the water supply state information. 3. The water supply and distribution management system according to claim 2, wherein the water depth is calculated and the required water supply amount Q to each field group is calculated as Q=Σ(demand water depth x field area). When the operating state is a continuous flow mode, the required water supply amount calculation unit calculates the required water supply amount for each field group based on the opening degree information of the water tap of each field included in the water supply state information. The water supply and distribution management system according to claim 2 or 3. The water supply and distribution management system according to claim 2 or 3, wherein the water supply control unit controls each water faucet based on a preset priority when the operating state is a constant irrigation mode. 6. The water supply and distribution management system according to claim 5, wherein the priority is set based on the required water supply amount Q, and is set in order from a group of fields with a large value of the required water supply amount Q to a group of fields with a small value. 6. The water supply and distribution management system according to claim 5, wherein the priority is set based on the water demand depth, and is set for the same field group in order from a field with a large demand water depth to a farm with a small value. 6. The water supply and distribution management system according to claim 5, wherein the priority is set based on the water demand depth, and is set for a plurality of farm fields in order of the water demand depth from a field with a large value to a field with a small value. The field management unit generates a monitor image that displays the operating status and water level of each field included in each field group in a visually discernable manner, and displays the monitor image in response to a request from an external device. The water supply and distribution management system according to any one of claims 1 to 8, further comprising a display processing section. A field water management device incorporated into the water supply and distribution management system according to any one of claims 1 to 9,
A field management department that manages the operational status of each field and collects information on the water supply status of each field;
a required water supply amount calculation unit that calculates the required water supply amount for each field group based on the water supply status information of each of the fields;
A hydrant remote control unit that remotely controls the opening and closing of the hydrant in each field;
a water supply amount reporting unit that outputs the required water supply amount for each field group to the irrigation water management device;
A field water management device equipped with When the operating state is constant irrigation mode, the required water supply amount calculation unit calculates the demand, which is the water level difference between the set water level of each field and the current water level, based on the water level information of each field included in the water supply state information. The field water management device according to claim 10, configured to calculate the water depth and calculate the required water supply amount Q to each field group as Q = Σ (demanded water depth x field area). When the operating state is a continuous flow mode, the required water supply amount calculation unit calculates the required water supply amount for each field group based on the opening degree information of the water tap of each field included in the water supply state information. The field water management device according to claim 10 or 11, configured as follows. An irrigation water management device incorporated into the water supply and distribution management system according to any one of claims 1 to 9,
An irrigation water management device comprising a water distribution management unit that manages the number of operating water distribution pumps and operating hours based on the required water supply amount notified from the water supply amount notification unit.

Images