JP7348833B2 - Field water reservation system and field water management system - Google Patents

Description

The present invention relates to a field water supply reservation system and a field water management system.

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 is 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 direct distribution valves installed in each field group from a central management department. has been done.

Patent Document 3 discloses that when there is a shortage of irrigation water available in a field area, the purpose is to appropriately allocate water to each field and improve the quality and yield of crops in the field area as a whole. A field irrigation system has been proposed.

The field irrigation system is configured to irrigate each field by controlling the water supply equipment installed in each field in a field area consisting of multiple sections, and can be used for the above field area during a predetermined period of time. water distribution amount determining means for dividing the total irrigation water by a predetermined value and determining the amount of water to be distributed to each field when allocating it to each field; and each of the water supply devices based on the water distribution amount. The present invention is characterized in that a field irrigation water management device having a control means for operating the field irrigation water management device is installed.

Japanese Patent Application Publication No. 09-65776 Japanese Patent Application Publication No. 10-42726 Japanese Patent Application Publication No. 2001-275501

However, in the field irrigation water management device described in Patent Document 3, when a uniform amount of irrigation water is supplied to the relevant field area all at once for a fixed period, the water supply pipes that convey irrigation water are There is a risk that an inconvenient situation may occur in which sufficient water pressure cannot be obtained downstream of the area, resulting in insufficient water supply during the relevant period.

In addition, depending on the farmer's cultivation plan and the crops and varieties grown in the field, the timing of supplying irrigation water to each field may differ from that of other fields, and there is the problem of not being able to respond flexibly to such cases. There is a possibility that this may occur.

In view of the above-mentioned problems, an object of the present invention is to provide a field water supply reservation system and a field water management system that can be flexibly adapted to supply the required amount of irrigation water to the field by the required time.

In order to achieve the above object, the first characteristic configuration of the field water supply reservation system according to the present invention is a field water supply reservation system that reserves the supply of irrigation water to a group of fields, which is a collection of fields. A permissible maximum water supply amount acquisition means that obtains the maximum permissible water supply amount for each field group within a period, and water supply reservation information for each field including field identification information, water supply deadline information, and required water supply amount, for each field group. a water supply schedule management means for generating a water supply schedule that includes a water supply possibility amount in which the total required water supply amount of the field is less than the allowable maximum water supply amount and a water supply possibility schedule for a predetermined period up to a water supply deadline specified by the water supply deadline information; , based on the water supply possible schedule input from the water supply schedule management means, the water supply target field, water supply deadline, and required water supply amount from the terminal device or external system, or the water supply target field, the water supply deadline, and the water supply target farm. Whether or not to accept a water supply reservation request that specifies the required water supply amount obtained from a database in which the field size is registered in advance in a database set for each field and the target water depth is set for each management period of plants grown in the field. and, upon receiving the water supply reservation request, generates the water supply reservation information including field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field, and outputs the generated water supply reservation information to the water supply schedule management means. The water supply schedule management means is configured to update the water supply availability schedule based on the water supply reservation information output from the water supply reservation reception means.

The water supply schedule management means generates a water supply schedule for each field group based on the water supply reservation information including field identification information, water supply deadline information, and required water supply amount. The water supply schedule includes the water supply limit for which the total required water supply amount is less than the allowable maximum water supply amount for each field group, and the water supply deadline. You will be able to understand whether it is possible or not. When a farmer uses a terminal device to make a water reservation request to the water supply reservation accepting means, specifying the field to be watered and the water supply deadline, the water supply reservation accepting means determines whether or not the water supply reservation request can be accepted. Once determined, water supply reservation information corresponding to the water supply reservation request is generated and output to the water supply schedule management means. The water supply schedule management means updates the water supply schedule to include the water supply reservation information. By specifying the water supply deadline instead of the water supply date and time, even if reservations are concentrated on a specific water supply deadline, water can be supplied for a predetermined period before the water supply deadline, for example, by distributing water at multiple dates and times. By supplying water, water can be supplied properly without causing a drop in water pressure. Therefore, farmers can flexibly adjust the timing of water supply to their fields based on the water supply schedule.

The second characteristic configuration is that, in addition to the first characteristic configuration described above, the water supply reservation accepting means is configured to present the water supply available schedule to the terminal device or external system.

The terminal device or external system displays the amount of water that can be supplied after subtracting the amount of water requested by reservations for each field group for a given period as a scheduled water supply schedule, so it is possible to determine whether or not the desired water can be supplied to the desired field. This decision can be easily prompted. For example, if a farming support system is used as an external system to support the management of the annual field work schedule from sowing to harvesting, comprehensive farming support is possible.

In addition to the above-mentioned first or second characteristic configuration, the third characteristic configuration is to remotely control the water supply device installed in the field corresponding to the field identification information based on the water supply reservation information. The feature is that the field water supply control means for supplying water to the field is provided.

Based on the water supply reservation information generated by the water supply reservation accepting means, the field water supply control means remotely controls the water supply device installed in the field, so that the accepted water supply reservation request is automatically executed. . Therefore, the farmer is freed from the troublesome operation of going to the field and operating the water supply device each time.

The fourth characteristic configuration is that, in addition to any of the characteristic configurations of the first to third above, the field group is composed of a plurality of block field groups, and the water supply schedule management means is configured for each block field group. A water supply schedule is generated that includes a water supply capacity in which the total required water supply quantity is less than the allowable maximum water supply quantity and a water supply availability schedule for a predetermined period up to the water supply deadline specified by the deadline information.

Since the water supply schedule is generated for each block field group, water is supplied for each block field group even in a vast field group, and there is no problem of a drop in water supply pressure.

The fifth characteristic configuration is a field water management server that manages water supply and drainage to each field that makes up the field group, a terminal device or external system that can communicate with the field water management server , and a remote control system that is connected to the field water management server. A field water management system including a water supply device that is controlled and installed in each field, and an irrigation water management server that is communicably connected to the field water management server and manages the supply of irrigation water to each field group. An irrigation water management system, wherein the field water management server and the irrigation water management server are communicably connected, the irrigation water management server is configured to manage fields within a predetermined period of time. Based on the permissible maximum water supply amount acquisition means for obtaining the permissible maximum water supply amount for each field group, and the water supply reservation information for each field including field identification information, water supply deadline information, and required water supply amount, the required water supply amount for each field is calculated for each field group. water supply schedule management means for generating a water supply schedule that includes a water supply capacity whose total is less than the allowable maximum water supply quantity and a water supply availability schedule for a predetermined period up to the water supply deadline specified by the water supply deadline information; The field water management server determines, based on the water supply possible schedule input from the water supply schedule management means, the water supply target field, water supply deadline, and required water supply amount from the terminal device or the external system, or the water supply target field, the water supply target field, and the water supply target field from the terminal device or the external system. Identifies the required amount of water supply obtained from a database in which the water supply deadline, the field size registered in advance in the database set for each water supply target field, and the target water depth set for each management period of plants grown in the field are set. When the water supply reservation request is accepted, the water supply reservation information including the field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field is generated, and the water supply schedule management is performed. and field water supply control means that remotely controls a water supply device installed in a field corresponding to the field identification information to supply water to the field based on the water supply reservation information. , the water supply schedule management means provided in the irrigation water management server is configured to update the water supply availability schedule based on the water supply reservation information output from the water supply reservation reception means provided in the field water management server. It is in the point that it is.

A field water reservation system is constructed by a field water management system that manages water supply to individual fields and an irrigation water management system that manages the distribution of water supply to each field group. When a water supply reservation request is made from a terminal device etc. to the field water management server provided in the field water management system, and when the water supply reservation request is accepted by the field water management server, the water supply reservation information is transferred to the irrigation water provided in the irrigation water management system. Output to the management server. The irrigation water management server generates a water supply schedule based on the maximum allowable water supply amount and each water supply reservation information, and outputs the water supply schedule to a terminal device etc. via the field water management server, and then generates a water supply schedule based on the permissible water supply schedule. A water supply reservation request is input to the field water management server from a terminal device, etc., and is further output to the irrigation water management server. Then, the field water management server executes water supply control to the field based on the water supply reservation information.

The first characteristic configuration of the field water management system according to the present invention is a field water management server that manages water supply and drainage to each field constituting a field group, a terminal device or an external system that can communicate with the field water management server , A field water management system that is remotely controlled by the field water management server and includes a water supply device installed in each field, and is incorporated into a field water supply reservation system having the fifth characteristic configuration described above, wherein the field water The management server determines, based on the water supply possible schedule input from the water supply schedule management means, the water supply target field, water supply deadline, and required water supply amount from the terminal device or the external system, or the water supply target field, the water supply deadline. and water supply that specifies the required water supply amount obtained from a database in which the field size is registered in advance in a database set for each field to be watered and the target water depth is set for each management period of plants grown in the field. It determines whether or not the reservation request can be accepted, and when the water supply reservation request is accepted, it generates the water supply reservation information including field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field, and sends it to the water supply schedule management means. a water supply reservation accepting means for outputting, and a field water supply control means for remotely controlling a water supply device installed in the field corresponding to the field identification information to supply water to the field based on the water supply reservation information, The terminal device or the external system makes the water supply reservation request to the water supply reservation reception means based on the available water supply schedule presented by the water supply reservation reception means.

As explained above, according to the present invention, it is possible to provide a field water supply reservation system and a field water management system that can flexibly respond so that the required amount of irrigation water can be supplied to the field by the required time. became.

Illustration of irrigation water equipment Explanatory diagram of the field Diagram of field water reservation system Flowchart showing the procedure for generating a field water supply schedule Flowchart showing the procedure for accepting reservations for field water supply An explanatory diagram of a field water supply reservation system showing another embodiment

Below, a field water supply reservation system and a field water management system according to the present invention will be explained. Note that the term "field" used in the following explanation refers to both rice paddies and fields, and a field group refers to multiple fields that are supplied with irrigation water from a common water supply system that is divided from a water source by a diversion works. . 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 field groups through multiple water supply systems separated by water diversion works. In the following embodiments, a field for growing rice will be described, but the same applies to a field for cultivation.

As shown in FIG. 1, the irrigation water equipment is a water supply equipment for supplying irrigation water taken from a water source pond 130 such as a river or lake to each field 1 via a distribution reservoir 121. and each field 1 are connected by a water supply pipe 120 serving as a main line and water supply pipes 100 and 101 serving as branch lines.

The water distribution reservoir 121 is a facility for storing pumped irrigation water to be supplied to each field group 10, and the irrigation water is pumped up by a pump of a pumping station 131 provided in the water source reservoir 130 to maintain a constant water level. A water supply pipe 120 is connected to a water distribution port of the water distribution reservoir 121, and pumped water for irrigation is pumped by water pressure.

The main water supply pipe 120 is branched from the distribution reservoir 121 to each field group 10, and a water diversion device 140 is provided which functions as a water diversion facility to adjust the amount of water supplied to each branched water supply pipe 100. It is being That is, the irrigation water pumped from the water distribution reservoir 121 is supplied to each field group 10 after the amount of water supplied is adjusted by the water distribution device 140.

A water supply pipe 100 serving as a branch line is also branched toward each farm field 1, and a water supply device 2 equipped with a water tap for supplying water to each farm field 1 is connected to the branched water supply pipe 101. Further, each field 1 is provided with a drainage device 4 equipped with a drain plug, and a drainage channel 9 is provided so that water from each field 1 via the drainage device 4 is discharged into the river.

As shown in FIG. 2, in the field 1, there is a water supply device 2 that directs irrigation water flowing into the water supply pipe 100 (101) to the field 1 via the headrace 3, and a water supply system 2 that directs the irrigation water flowing into the water supply pipe 100 (101) to the field 1 through the water conduit 3. A drainage device 4 is provided for discharging water into a drainage canal 9 via the field, and a wireless repeater 7 connectable to a communication network such as the Internet is installed near the field 1. Furthermore, a water level sensor 6 for measuring the water level in the field 1 is 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, a communication circuit, etc. are operated by the electric power of a condenser in which electric power generated by the solar panel SP is stored.

The communication circuit provided in the water supply device 2 and the drainage device 4 is configured to be able to communicate with the field water management server 21 via the wireless repeater 7, and is configured to be able to communicate with the field water management server 21 via the wireless repeater 7. The water level is transmitted to the field water management server 21, and the field water management server 21 is configured to be able to adjust the water supply tap and/or drain plug by remote control.

Returning to FIG. 1, each water diversion device 140 provided in the water supply pipes 120, 100 connecting the water distribution reservoir 121 and each field group 10 includes a flow rate adjustment valve for water diversion, a control circuit for controlling the flow rate adjustment valve, and a communication circuit. A circuit is provided, and the irrigation water management server 31 is configured to be capable of network communication via the communication circuit, and the flow rate adjustment valve is configured to be adjustable by remote control by the irrigation water management server 31.

Irrigation water pumped from the distribution reservoir 121 is supplied to the individual fields 1 constituting each field group 10 after its flow rate is adjusted by the water diversion device 140 .

Taking rice cultivation as an example, a sufficient amount of water is supplied to the field and puddling is carried out, 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 to encourage root growth and suppress the growth of stems, and draining water at harvest time.

The water supply periods for each field overlap, such as the puddling season, and it is necessary to supply a large amount of water at the same time.In order to distribute a certain amount of irrigation water secured at the water source equally to each field, water is supplied on a field group basis. Although the schedule is planned and managed, depending on the water pressure of the water supply pipes, even in fields in the same field group, it may not be possible to supply a sufficient amount of water at that time, and the water taps may continue to be opened even after the specified amount of water has been supplied. If this happens, the amount of water supplied to other fields may become insufficient.

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

In order to flexibly deal with such problems, the field water reservation system according to the present invention connects the above-mentioned irrigation water management server 31 and field water management server 21 via a communication medium such as the Internet, thereby making it easier for farmers to A field water supply reservation system that reserves irrigation water for a field group 10, which is a collection of fields 1, and is a system that allows irrigation water to be supplied appropriately according to the situation of each field managed by the company. It is.

Specifically, as shown in FIG. 3, the field water reservation 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, etc. provided in each field 1. The field water management server 21 is provided with functional blocks of a water supply reservation accepting means 21A and a field water supply control means 21B. The terminal device 8 includes a portable terminal device such as a smartphone and a stationary terminal device such as a desktop computer. In addition to the terminal device 8, for example, an external system such as a farming support system that supports the management of the annual field-related work schedule from sowing to harvesting, specifically, a farming support server and/or a farming support terminal, can be used. It is also possible to use this system, in which case comprehensive farming support can be provided.

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 that adjusts the amount of water supplied from the water distribution reservoir 121 to each field group 10. The total amount of water supplied to each field group 10 is adjusted by the field group water supply amount adjusting device. The irrigation water management server 31 is provided with the following functional blocks: maximum allowable water supply amount acquisition means 31A, field group water supply amount adjustment means 31B, and water supply schedule management means 31C. In addition, below, the water diversion device 140 may be described as the field group water supply amount adjustment device 140.

Each server 21, 31 is equipped with a CPU board, a memory board, a communication board, a large-capacity external storage device, etc., and application programs stored in the memory provided on the memory board are executed by the CPU mounted on the CPU board. By doing so, each of the functional blocks described above is realized.

The irrigation water management server 31 generates a new acceptable water supply schedule based on each water reservation information input from the field water management server 21 and outputs it to the field water management server 21. A timetable based on the water supply availability schedule is presented to the terminal device 8, and if the water supply reservation request inputted from the terminal device 8 is executable, the water supply reservation is accepted, water supply reservation information is generated, and irrigation water is sent to the terminal device 8. It is configured to output to the management server 31.

The allowable maximum water supply amount acquisition means 31A provided in the irrigation water management server 31 is configured to obtain the allowable maximum water supply amount for each field group 10 within a predetermined period and output it to the water supply schedule management means 31C.

The maximum allowable water supply amount refers to the maximum amount of irrigation water obtained from the distribution reservoir 121 that can be supplied to each field group 10 per day or per hour. A calculated value of the water supply amount evenly distributed by the device 140 or a value assigned to each water diversion device 140 in advance is stored in the external storage device of the irrigation water management server 31.

The water supply schedule management means 31C provided in the irrigation water management server 31 determines that the total required water supply amount for each field group 10 is the allowable maximum water supply amount based on the water supply reservation information including field identification information, water supply deadline information, and required water supply amount. generates a water supply schedule for a predetermined period up to the water supply deadline specified by the water supply availability amount and water supply deadline information, stores the water supply availability schedule in the memory on the memory board, and outputs it to the field water management server 21. It is configured as follows.

When the water supply reservation receiving means 21A provided in the field water management server 21 receives the water supply schedule from the water supply schedule management means 31C, it stores the water supply schedule in the memory on the memory board and sends the water supply reservation reception unit 21A upon the reservation confirmation request. presented on the terminal device 8. Then, it is determined whether or not the water supply reservation request input from the terminal device 8 specifying the water supply target field 1 and the water supply deadline can be accepted.

When the water supply reservation accepting means 21A determines that the water supply reservation request can be executed according to the water supply availability schedule, it accepts the water supply reservation request and provides the field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field. It is configured to generate water supply reservation information including the information and output it to the water supply schedule management means 31C.

The water supply reservation request transmitted from the terminal device 8 operated by the farmer includes information specifying the field to be watered and information specifying the water supply deadline for the field. It is possible to include multiple water supply target fields and multiple desired dates or desired water supply times as water supply deadlines for each field. For example, the desired water supply time is specified by dividing the period from 0:00 to 24:00 into 6-hour intervals from the first period to the fourth period.

Each field group 10 and each field 1 belonging to the field group 10 are stored in advance as a field database in the external storage devices of the field water management system 20 and irrigation water management system 30, and a water reservation information database linked to the database. is stored.

The field database contains records consisting of field information such as field group identification code, field identification code (field identification information), field location, owner code, contact information, field size, and field water tap model information. Stored.

The water supply reservation information database stores records that are linked to the above-mentioned field identification code and are composed of field information such as water supply deadline, required water supply amount, and water supply completion confirmation information.

As described above, the water supply reservation information generated when the water supply reservation receiving means 21A receives a water supply reservation request includes the required water supply amount in addition to the field identification information corresponding to the water supply target field and water supply expiration information. .

The water supply reservation accepting means 21A calculates the required water supply amount from the field size of the corresponding field and the target water depth of the field 1. For water supply to field 1, target water depths are determined for each management period, such as the deep water management period during puddling and rice planting, and the subsequent intermittent irrigation management period.For example, during the puddling period, the water depth is 15 cm. is predetermined.

This target water depth information is provided in association with the water supply deadline information of the water supply reservation request from the terminal device 8. In this case, the water supply reservation accepting means 21A calculates the required water supply amount from the target water depth, but the water supply reservation request may include information on the required water supply amount.

Since the amount of water supplied per hour is determined from the model information of the hydrant provided in the water supply device 2 provided in each field 1, the time required for water supply can also be determined from the model information. Therefore, required water supply time information can be included in the required water supply amount.

The water supply reservation accepting means 21A refers to the water supply availability schedule and determines whether or not it is possible to supply the necessary amount of water to the field specified in the water supply reservation request by the water supply deadline, and if it is determined that it is possible, makes the relevant water supply reservation. and generates water reservation information.

When the water supply schedule management means 31C receives the water supply reservation information from the water supply reservation reception means 21A, it stores the water supply reservation information in the water supply reservation information database, and in order to respond to the next water supply reservation request, the permissible maximum water supply amount acquisition means For each field group 10 acquired by 31A, a water supply availability schedule is sequentially updated and generated so that it can be determined whether or not water supply is possible based on the water supply reservation information within a range that satisfies the allowable maximum water supply amount.

The water supply schedule specifies, for example, water supply days within a predetermined period and a timetable in which the day is divided into 1st to 4th periods at 6-hour intervals, and the amount of water that can be supplied in each period.

The water supply availability schedule is a water supply availability schedule that reflects the water supply reservation information that has been accepted so far, and is for a predetermined period leading up to the water supply deadline specified in the water supply deadline information, for example, from 3 days before the water supply deadline until the water supply deadline. The date and time when water can be supplied and the amount of water available will be shown. The predetermined period is not limited to three days, and may be any period in which water supply can be started at least until the water supply deadline.

Part-time farmers often do farm work on Saturdays and Sundays, so even if water supply deadlines are concentrated on Saturdays and Sundays, water supply to each field can be scheduled several days in advance and distributed water supply on weekdays when water demand is low. By doing so, water can be supplied properly without causing a significant drop in water pressure.

For large fields consisting of multiple block fields, a water supply schedule is generated for each block field group, and water can be supplied to block fields so that water supply on the same day and time does not overlap. A schedule is generated.

A farmer who makes an entry into the field water reservation system 200 to make a water supply reservation can select the water supply schedule for the field for which he/she desires water supply from the water supply schedule displayed on the terminal device 8, that is, the timetable that displays the amount of water that can be supplied until a predetermined period. After determining whether the desired water supply is possible or not, and inputting a water reservation request to supply water by the water supply deadline date or deadline date and time, a water supply reservation request is made to the water reservation reception means 21A, and the water supply reservation request is rejected. When this happens, a new water supply deadline is set and a water supply reservation request is made.

It is also possible to perform the generation process of the water supply possible schedule executed by the water supply schedule management means 31C using a machine learning device. In this case, the water supply reservation accepting means 21A does not refer to the water supply schedule to determine whether or not it is possible to supply the required amount of water to the field specified in the water supply reservation request by the water supply deadline, but to make the water supply reservation for the time being. The information is generated and transmitted to the water supply schedule management means 31C, and the water supply schedule management means 31C uses a machine learning device to test whether or not it is possible to generate a water supply possible schedule.If the water supply possible schedule can be generated, the water supply reservation is made. It may be configured to reply to the reception means 21A that water supply reservation is possible, and when a water supply possible schedule cannot be generated, to reply to water reservation reception means 21A that water supply reservation is permitted or rejected.

As a machine learning device, when the requested water supply reservation information is incorporated into the established water supply schedule, can the water supply reservation information and multiple reservation information included in the determined water supply schedule be classified into the same class? It can be configured using algorithms such as random forest, logistic regression, support vector machine, support vector regression, etc., which can perform classification operations to identify whether or not the data is false.

For example, if the amount of water can be completed within the desired water supply time specified by dividing the period from 0:00 to 24:00 into periods 1 to 4 at 6-hour intervals, it will be classified in the same class, and in other cases, It will be classified into a different class, and a reply will be sent to the water supply reservation accepting means 21A that the water supply reservation is possible.

If the water supply is classified into different classes, and if the water supply can be completed in a 6-hour period before or after, or if the water supply can be completed over two consecutive periods, it will be classified into the same class in the corresponding period, A reply will be sent to the water supply reservation accepting means 21A that water supply reservations with conditions can be made. Conditional means that the request cannot be completely met, but it can be booked under similar conditions.

If it cannot be classified into either the previous or next period, a reply is sent to the water reservation accepting means 21A indicating whether or not the water reservation is permitted.

Variables for the classification operation include the time of day, the amount of water supplied to the relevant field, the number of water taps provided in the relevant field, and the amount of water supplied to the relevant field is preferably weighted based on the distance from the distribution reservoir. Variations in the time required for water supply can be leveled out by reducing the weight in fields where the water supply pressure is high and are close to the distribution reservoir, and increasing the weight in fields where the water supply pressure decreases far from the distribution reservoir.

FIG. 4 shows the procedure for generating a water supply schedule that is executed by the water supply schedule management means 31C described above, and FIG. 5 shows the processing procedure for accepting a water supply reservation that is executed by the water reservation reception means 21A.

When a series of water supply reservation requests are made in this way, the field water supply control means 21B remotely controls the water supply device 2 installed in the field 1 corresponding to the field identification information based on the water supply reservation information stored in the memory. The water tap is opened under control to supply water to the field 1. Since the accepted water supply reservation request is automatically executed, the farmer is freed from the troublesome operation of going to the field and manually operating the water supply device 1 each time. At this time, it goes without saying that the drain device 4 is remotely controlled to block the drain plug in advance, or the drain water level is set to be higher than the water supply level.

The water level detected by the water level gauge 6 provided in each field 1 is input to the water supply device 2, and the detected water level is transmitted from the water supply device 2 to the field water management server 21. The field water supply control means 21B of the field water management server 21 determines whether or not the water supply based on the corresponding water reservation information is completed based on the received water level of the water level meter 6, and when the target water level is reached, the water supply device is activated. Water supply to the field 1 is completed by remotely controlling 2 and closing the water tap.

Note that the control unit of the water supply device 2 may close the hydrant by itself based on the water level of the water level gauge 6, and may also transmit water level information to the field water management server 21.

In addition, the field group water supply amount adjustment means 31B remotely controls the field group water supply amount adjustment device 140 provided corresponding to each field group 10 based on the water supply reservation information to adjust the water supply amount to each field group 10. configured to adjust.

For example, wasteful water distribution can be reduced by supplying water to each field group 10 according to the water supply amount required for each predetermined period based on the water supply reservation information.

In addition, the field group water supply amount adjusting means 31B acquires water supply information of the field being supplied with water from the field water supply control means 21B, for example, field water level information and water tap opening/closing information, which is an example of water supply execution information of the water supply device. The system may be configured to determine the water supply status of a field to be watered, and adjust the amount of water supplied to a field group having the field to be watered.

Specifically, when information is obtained that the water level has not reached a predetermined level at the scheduled end time or that the water tap is not blocked, the amount of water supplied to the field group 10 including the field 1 is increased. Enable water supply to be completed early. Alternatively, it is also possible to obtain water level information from the start of water supply and estimate whether or not water supply will be completed at the scheduled time based on the water level rise rate. The amount of water supplied to the farm field group 10 including the farm field 1 may be adjusted so that water can be supplied to the field group 10.

At this time, the field group water supply amount adjustment means 31B adjusts the water supply amount of the field group water supply amount adjustment device 140 within a range that does not exceed the allowable maximum water supply amount for the field group 10.
Furthermore, if there is surplus water supply in other field groups 10, that is, if the requested water supply amount for which reservations have been accepted is lower than the allowable maximum water supply amount, water can be supplied within the range exceeding the allowable maximum water supply amount. In this case, the allowable maximum water supply amount for each field group 10 is temporarily changed, and when the scheduled water supply is completed, the water supply amount to each field group 10 and the allowable maximum water supply amount are changed. be returned.

The maximum permissible amount of water supplied to each field group 10 is, for example, the amount of water pumped from the distribution reservoir 121 divided equally among each field group 10, or the amount of water distributed at a predetermined distribution ratio. Reservations for each field group 10 are made within the range of the supply amount, but if each field group 10 has surplus water supply capacity, the allowable maximum water supply volume may be added to the surplus capacity. In this case, the allowable maximum water supply amount is recalculated when the water supply reservation request is received. However, since there is a limit to the water supply amount of the field group water supply amount adjustment device 140, the maximum allowable water supply amount is set within a range that does not exceed this limit.

That is, the field group water supply amount adjusting means 31B is configured to variably set the allowable maximum water supply amount for each field group 10 within a predetermined period. Therefore, the timing and amount of water supplied to each field 1 can be flexibly adjusted.

In the above example, based on the fact that it takes approximately 6 hours to water an average-sized field 1 to a water depth of 15 cm, the water is supplied from the first period to the second period at 6-hour intervals for 24 hours a day. We have explained an example in which the water supply date and time is divided into four periods and specifies the water supply date and time, and an example in which the water supply can be reserved in any time period. However, the water supply availability schedule is determined by the water supply reservation information. It is preferable that the system is configured to include a preliminary time period in which water supply is completed.

Even if water supply is started based on the water supply reservation information, it may be difficult to supply sufficient water due to fluctuations in the water pressure or amount of irrigation water supplied to each field 1 at that time. Even in such a case, if the water supply reservation information includes a reserve time slot, water supply specified by the water supply reservation information can be completed by continuing water supply during the reserve time slot. For example, if the 1st to 3rd period is 6 hours, the 4th period is 3 hours, and the remaining 3 hours are the reserve time, the fields that could not be completed with water supply from the 1st to 4th period will be Water is supplied during this reserve time period.

Another aspect of the field water reservation system 200 of the present invention will be described below.
In the embodiment described above, a configuration has been described in which a water reservation request is made to the field water management system 20 via the terminal device 8. good.

As shown in FIG. 6, the field water supply reservation system 200 includes a field water management system 20 consisting of a field water management server 21 equipped with a field water supply control means 21B, a water supply device 2, a water supply reservation reception means 31D, and a water supply reservation reception means 31D. Irrigation water management server 31 having maximum water supply amount acquisition means 31A, water supply schedule management means 31C, field group water supply amount adjustment means 31B, and terminal device 8 for inputting a water supply reservation request to water supply reservation reception means 31D. It is configured to include a management system 30.

The irrigation water management server 31 presents the water supply reservation schedule generated based on each water supply reservation information to the terminal device 8, and accepts the water supply reservation request inputted from the terminal device 8 when the water supply reservation request is executable. The system is configured to generate water supply reservation information and output it to the field water management server 21. That is, the difference is that the irrigation water management server 31 is provided with a functional block as the water supply reservation receiving means 21A provided in the field water management server 21.

In the embodiment described above, the field water reservation system 200 has been described as having the field water management system 20 and the irrigation water management system 30, but it may be constructed as one system. For example, the irrigation water management server 31 shown in FIG. 6 may be provided with a functional block of a field water supply control means to control the water supply device 2.

In the embodiment described above, the field water supply reservation system 200 has been described as having a configuration including a field group water supply amount adjustment device and a field group water supply amount adjustment means, but it may also be a system that does not include these. It is also possible to use a system that does not include field water supply control means.

In the embodiment described above, an example has been described in which the water supply schedule management means updates and generates a water supply possible schedule based on a preset allowable maximum water supply amount. may be configured.

For example, on the same day, at the water supply reservation stage, multiple fields belonging to one field group become full, making it impossible to accept water reservations due to restrictions on the maximum allowable water supply amount, and one or more other field groups receive the maximum allowable water supply. If the reservation status is lower than the maximum allowable water supply amount, the maximum allowable water supply amount for the field group that is fully booked will be increased, and the maximum allowable water supply amount for the field group whose reservation status is lower than the allowable maximum water supply amount will be decreased. May be adjusted.

In other words, if a water supply reservation cannot be accepted due to restrictions on the maximum allowable water supply amount on any day and/or time during the predetermined period (for example, 3 days) leading up to the water supply deadline specified in the water supply deadline information, the reservation The system increases the allowable maximum water supply amount for the field group that is full, and decreases the allowable maximum water supply amount for the field group whose reservation status is lower than the allowable maximum water supply amount.

In the example described above, a plurality of water diversion devices, which are the field group water supply amount adjustment device 140, simultaneously divert water, but the state in which one of the water diversion devices independently opens changes over time. If you create a water supply schedule including the water diversion device so that water is supplied to the field group from the water diversion device with the valve open, the maximum allowable water supply amount to each field group will increase, and water will be supplied more efficiently. become able to.

In the embodiment described above, a configuration in which the field group water supply amount adjustment device 140 is used as a water diversion device has been described. In irrigation water equipment equipped with a reservoir for storing water, a pump device may be used, and in irrigation water equipment equipped with a water diversion device and a reservoir, a combination of the water diversion device and the pump device may be used. It may be.

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, and the embodiments described above are not intended to limit the technical scope of the present invention. It goes without saying that the 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 server 21A: Water supply reservation reception means 21B: Field water supply control means 30: Irrigation water Management system 31: Irrigation water management server 31A: Allowable maximum water supply amount acquisition means 31B: Field group water supply amount adjustment means 31C: Water supply schedule management means 100: Water supply pipe (branch line)
120: Water supply pipe (main line)
121: Water distribution reservoir 130: Water source pond 140: Field group water supply amount adjustment device 200: Field water supply reservation system

Claims (6)

A field water supply reservation system for reserving the supply of irrigation water to a field group, which is a collection of fields,
a maximum permissible water supply amount acquisition means for acquiring the maximum permissible water supply amount for each field group within a predetermined period;
Based on the water supply reservation information of each field including field identification information, water supply deadline information, and required water supply amount, the total amount of water supply required for each field is below the allowable maximum water supply amount for each field group, and the water supply deadline. a water supply schedule management means for generating a water supply schedule including available water supply dates and times for a predetermined period up to the water supply deadline specified by the information;
Based on the water supply availability schedule input from the water supply schedule management means, the water supply target field, water supply deadline, and required water supply amount from the terminal device or external system, or each of the water supply target field, the water supply deadline, and the water supply target farm. The system determines whether or not a water supply reservation request can be accepted that specifies the required water supply amount obtained from a database in which the field size is pre-registered in the database and the target water depth is set for each management period for plants grown in the field. Water supply reservation receiving means that determines the water supply reservation request and, upon receiving the water supply reservation request, generates the water supply reservation information including field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field, and outputs the generated water supply reservation information to the water supply schedule management means. and,
Equipped with
The water supply schedule management means is configured to update the water supply availability schedule based on the water supply reservation information output from the water supply reservation reception means. The field water supply reservation system according to claim 1, wherein the water supply reservation accepting means is configured to present the water supply available schedule to the terminal device or an external system. The field water supply according to claim 1 or 2, further comprising a field water supply control means that remotely controls a water supply device installed in the field corresponding to the field identification information based on the water supply reservation information to supply water to the field. Reservation system. The field group is composed of a plurality of block field groups, and the water supply schedule management means is specified by the available water supply amount and the deadline information for each of the block field groups for which the total required water supply amount is less than the allowable maximum water supply amount. The field water supply reservation system according to any one of claims 1 to 3, which generates a water supply schedule that includes water supply availability dates and times for a predetermined period up to a water supply deadline. A field water management server that manages water supply and drainage to each field constituting a field group, a terminal device or an external system that can communicate with the field water management server , and a field water management server that is remotely controlled by the field water management server and installed in each field. a field water management system including a water supply device;
An irrigation water management system including an irrigation water management server that is communicatively connected to the field water management server and manages the supply of irrigation water to each field group;
A field water supply reservation system, wherein the field water management server and the irrigation water management server are communicably connected,
The irrigation water management server includes:
a maximum permissible water supply amount acquisition means for acquiring the maximum permissible water supply amount for each field group within a predetermined period;
Based on the water supply reservation information of each field including field identification information, water supply deadline information, and required water supply amount, the total amount of water supply required for each field is below the allowable maximum water supply amount for each field group, and the water supply deadline. a water supply schedule management means for generating a water supply schedule including available water supply dates and times for a predetermined period up to the water supply deadline specified by the information;
Equipped with
The field water management server is
Based on the water supply availability schedule input from the water supply schedule management means, the water supply target field, water supply deadline, and required water supply amount from the terminal device or the external system, or the water supply target field, the water supply deadline, and the water supply target. Acceptance of water supply reservation requests specifying the required water supply amount obtained from a database in which the field size is registered in advance in a database set for each field and the target water depth is set for each management period of plants grown in the field. After determining whether or not the water supply reservation request is accepted, the water supply reservation information that includes field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field is generated and outputted to the water supply schedule management means. reception means,
a field water supply control means that remotely controls a water supply device installed in the field corresponding to the field identification information based on the water supply reservation information to supply water to the field;
Equipped with
The water supply schedule management means provided in the irrigation water management server is configured to update the water supply availability schedule based on the water supply reservation information output from the water supply reservation reception means provided in the field water management server. A field water reservation system. A field water management server that manages water supply and drainage to each field constituting a field group, a terminal device or an external system that can communicate with the field water management server , and a field water management server that is remotely controlled by the field water management server and installed in each field. A field water management system incorporated into the field water supply reservation system according to claim 5, comprising a water supply device comprising:
The field water management server is
Based on the water supply availability schedule input from the water supply schedule management means, the water supply target field, water supply deadline, and required water supply amount from the terminal device or the external system, or the water supply target field, the water supply deadline, and the water supply target. Acceptance of water supply reservation requests specifying the required water supply amount obtained from a database in which the field size is registered in advance in a database set for each field and the target water depth is set for each management period of plants grown in the field. After determining whether or not the water supply reservation request is accepted, the water supply reservation information that includes field identification information, water supply deadline information, and required water supply amount corresponding to the water supply target field is generated and outputted to the water supply schedule management means. reception means,
a field water supply control means that remotely controls a water supply device installed in the field corresponding to the field identification information based on the water supply reservation information to supply water to the field;
Equipped with
The terminal device or the external system is a field water management system, wherein the terminal device or the external system makes the water supply reservation request to the water supply reservation reception means based on the available water supply schedule presented by the water supply reservation reception means.

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