JP2022036244A - Irrigation water management device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an irrigation water usage fee owed by a farmer to be appropriately set in relation to irrigation water management work.

SOLUTION: An irrigation water management device comprises: a water volume acquisition section which acquires a detection value with respect to a volume of water running through a water tap installed in a manner that supplies irrigation water to an agricultural field; an irrigation water information management section which allows a storage section to store an irrigation water usage volume on the basis of the acquired detection value in association with a farmer who owns the agricultural field with the water tap installed thereto as irrigation water management information; and a water usage fee processing section which calculates an irrigation water usage fee owed by the farmer on the basis of at least the irrigation water management information as an accounting data process for the irrigation water usage fee.

SELECTED DRAWING: Figure 6

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to a water management device.

In a large-scale farm, a monitoring system is known in which multiple data loggers that acquire and store weather information and soil information are installed so that the information stored in the data logger can be collected by a server via a router. (See, for example, Patent Document 1).

International Publication No. 2013/024877

It is said that the irrigation manager who provides the equipment related to irrigation management such as water supply to the field (farm) undertakes the work related to irrigation management from the field owner who uses the field and pays the compensation from the field owner to the irrigation manager. It is conceivable to build a business model.
In this case, for example, it is required that the price is set appropriately so that the field owners do not feel unfair.
However, in Cited Document 1, the information stored in the data logger is collected in a server installed by a university or a research institution and used for research or the like. Therefore, it is difficult to set an appropriate charge according to the structure of Cited Document 1.
Therefore, in consideration of the above problems, it is an object of the present invention to make it possible to appropriately set the fee paid by the field owner in relation to the water management work of the field.

In order to solve the above-mentioned problems, one aspect of the present invention includes a water amount acquisition unit that acquires a detected value for the amount of water flowing through a faucet provided to supply water to a field, and the acquired detected value. Based on the water management information management unit that associates the water usage amount based on the water supply with the field owner of the field equipped with the water tap and stores it in the storage unit as water management information, and at least based on the water management information as a process corresponding to the water usage fee. It is a water management device equipped with a charge handling processing unit that calculates the water usage charge of the field owner.

Further, one aspect of the present invention is the above-mentioned water management device, in which image data transmitted from a camera installed to image a water level scale plate installed to measure a water level in the field is obtained. The water level image data is stored in association with time, and the stored water level image data is used to create a report showing the water level in a certain period in the past, and the created report is used by the field owner terminal. It may further include a water level / water temperature reporting related processing unit configured to transmit to.

As described above, according to the present invention, it is possible to appropriately set the fee paid by the farmer in connection with the water management work of the field.

It is a figure which shows the overall configuration example of the water management system in 1st Embodiment. It is a figure which shows the structural example of the water sensor in 1st Embodiment. It is a figure which shows the configuration example of the water management server in 1st Embodiment. It is a figure which shows the content example of the water management information in 1st Embodiment. It is a flowchart which shows the example of the processing procedure which the water management server in 1st Embodiment executes for management of water management information. It is a flowchart which shows the example of the processing procedure for the water management server in 1st Embodiment corresponding to 1 field owner, and calculates the water use charge. It is a figure which shows the content example of the water management information in 2nd Embodiment. It is a flowchart which shows the example of the processing procedure which the water management server in 2nd Embodiment executes in order to collect the water level and water temperature data for each field. It is a flowchart which shows the example of the processing procedure for the water management server in 2nd Embodiment to report a water level and a water temperature to a field owner by using the collected water level image data and water temperature information. It is a figure which shows the structural example of the water tap in 3rd Embodiment. It is a figure which shows the structural example of the water tap in 3rd Embodiment. It is a figure which shows the content example of the water tap management information in 3rd Embodiment. It is a figure which shows the example of the processing procedure which the water management server in 3rd Embodiment executes in relation to the prevention of an air hammer.

Hereinafter, the water management system according to the embodiment of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 shows an overall configuration example of the water management system according to the present embodiment. The water management system of the present embodiment manages water supply and drainage in a plurality of fields.

First, referring to the figure, the water supply / drainage system of the field supported by the water management system will be described. The figure shows an example in which the water management system targets two fields FM-1 and FM-2. The fields FM-1 and FM-2 in the present embodiment are, for example, paddy fields, and irrigation and drainage (water supply and drainage) are performed so that the water level becomes appropriate according to the time of rice cultivation.
In the following description, when the fields FM-1 and FM-2 are not particularly distinguished, they are described as field FM. The number of field FMs managed by the water management system of the present embodiment is not particularly limited.

The field FM-1 is provided with a water tap 100-1. The water tap 100-1 is a facility that supplies water sent from Farm Pond FP (water supply source) to the field FM-1 via the pipeline PL. The water tap 100-1 is provided with a tap (valve) that opens and closes in the flow path until the water sent from the farm pond FP is discharged to the field FM-1, so that the water sent from the farm pond FP can be used in the field. The amount supplied to FM-1 is adjustable.
Further, the field FM-1 is provided with a drain plug 200-1. The drain plug 200-1 is a facility for draining the water stored in the field FM-1. The drain plug 200-1 is provided with a plug portion (valve) that opens and closes in the flow path until the water drawn from the field FM-1 is discharged to, for example, a pipeline, so that the amount of drainage can be adjusted.

The field FM-2 has a larger area than the field FM-1. Therefore, in the field FM-2, two water taps 100-2A and 100-2B and two drain plugs 200-2A and 200-2B are provided.

In the following description, when the water taps 100-2A and 100-2B of the field FM-2 are not particularly distinguished, they are described as water taps 100-2. Further, when the water taps 100-1, 100-2A, and 100-2B are not particularly distinguished, they are described as the water tap 100.
Further, in the following description, when the drain plugs 200-2A and 200-2B of the field FM-2 are not particularly distinguished, they are described as drainage plugs 200-2. Further, when the drain plugs 200-1, 200-2A, and 200-2B are not particularly distinguished, they are described as drainage plugs 200.

Here, the water management system of the present embodiment includes a wireless LAN (Local Area Network) router RT whose communication distance is an area covering the fields FM-1 and FM-2. The wireless LAN router RT is connected to the network NT, and the water management server 500 (an example of the water management device) is connected to the network NT.

The water supply plug 100 and the drainage plug 200 of each field FM in the present embodiment each have a network communication function corresponding to a wireless LAN. As a result, the water supply plug 100 and the drainage plug 200 of each field FM can communicate with the water management server 500 from the wireless LAN router RT via the network NT, respectively.

Water supply (irrigation) is performed in each of the field FMs as follows. The irrigation water supplied to the field FM is first drawn from, for example, a river RV to the farm pond FP via a pipeline and stored in the farm pond FP. Farm Pond FP is a pond that stores water for irrigation.
The water stored in the farm pond FP is pumped up by a pump (not shown) and supplied to the pipeline PL by applying pressure. In the case of the figure, the pipeline PL is branched into three routes and connected to the water taps 100-1, 100-2A and 100-2B provided in the fields FM-1 and FM-2, respectively. As a result, the irrigation water sent from the farm pond FP via the pipeline PL reaches the faucets 100-1, 100-2A, and 100-2B. At this time, if the taps of the water taps 100-1, 100-2A and 100-2B are in the open state, the water taps 100-1, 100-2A and 100-2B to the fields FM-1 and FM-2, respectively. Water is supplied to the area and irrigation is carried out.

Further, in the water management system of the present embodiment, water sensors 300-1, 300-2A and 300-2B and water sensors 350 are provided.

First, the water sensor 350 detects water flowing from the farm pond FP to the pipeline PL. As a specific example, the water sensor 350 is a flow rate sensor provided to detect the amount (flow rate) of water flowing in the pipeline PL in the portion of the pipeline PL near the farm pond FP. The water sensor 350 provided in this way can detect the amount of water flowing into the pipeline PL from the farm pond FP in response to the water being supplied from the farm pond FP.
Further, the water sensor 350 has a network communication function corresponding to a wireless LAN. Therefore, the water sensor 350 can communicate with the water management server 500 from the wireless LAN router RT via the network NT.
In the first embodiment, the water sensor 350 may be omitted.

The water sensor 300-1 is provided corresponding to the water tap 100-1, and detects the water flowing through the water tap 100-1. As a specific example, the water sensor 300-1 is provided so as to detect the amount (flow rate) of water flowing in a portion close to the water tap 100-1 in the pipeline PL connected to the water tap 100-1.
For example, when the water faucet 100-1 is closed and water does not flow to the water faucet 100-1, no water flow occurs even in the pipeline PL in the portion close to the water faucet 100-1. Therefore, the water sensor 300-1 in this case detects that the flow rate is zero.
On the other hand, when the water tap 100-1 is in the open state and water is flowing through the water tap 100-1, the water flow also occurs in the pipeline PL in the portion close to the water tap 100-1. Therefore, the water sensor 300-1 in this case detects the flow rate according to the amount of water flowing in the water tap 100-1.
In this way, the water sensor 300-1 can detect the water flowing through the water tap 100-1.
Further, the water sensor 300-1 and the water tap 100-1 are installed relatively close to each other. Therefore, the water sensor 300-1 and the water tap 100-1 are configured to be communicable by short-range wireless communication. As a result, the water sensor 300-1 transmits the detection information indicating the detected result to the water supply plug 100-1, and the water supply plug 100-1 transmits the received detection information from the wireless LAN router RT via the network NT. And can be transmitted to the water management server 500. In this way, the water management server 500 can acquire the detection information of the water sensor 300-1 via communication.

The method of short-range wireless communication between the water sensor 300-1 and the water tap 100-1 is not particularly limited, but for example, Bluetooth (registered trademark), ZigBee (registered trademark), or the like is adopted. can do.
Since such short-range wireless communication consumes less power, for example, the water sensor 300-1 can be operated for a long period of time by using a battery as a power source, and maintenance labor can be saved. Further, for example, when the electric power generated in the daytime by the solar cell is charged and used as a power source, a small capacity solar cell or a rechargeable battery can be used.

The water sensor 300-2A is provided corresponding to the water tap 100-2A and detects the water flowing through the water tap 100-2A. For example, the water sensor 300-2A is also provided so as to detect the amount (flow rate) of water flowing through the pipeline PL in the portion close to the water tap 100-2A.
Further, the water sensor 300-2A and the water tap 100-2A can communicate with each other by short-range wireless communication. As a result, the water management server 500 can acquire the detection information of the water sensor 300-2A from the water tap 100-2A via communication.

The water sensor 300-2B is provided corresponding to the water tap 100-2B and detects the water flowing through the water tap 100-2B. For example, the water sensor 300-2B is also provided so as to detect the amount (flow rate) of water flowing through the pipeline PL in the portion close to the water tap 100-2B.
Further, the water sensor 300-2B and the water tap 100-2B can communicate with each other by short-range wireless communication. As a result, the water management server 500 can acquire the detection information of the water sensor 300-2B from the water tap 100-2B via communication.

In the following description, when the water sensors 300-2A and 300-2B corresponding to the water taps 100-2A and 100-2B in the field FM-2 are not particularly distinguished, they are described as water sensors 300-2. Further, when the water sensor 300-1 corresponding to the water faucet 100-1 of the field FM-1 and the water sensor 300-2 are not particularly distinguished, the water sensor 300 is described.

Further, in the field FM-1, a water level scale plate 700-1 and a camera 800-1 are installed. The water level scale plate 700-1 is a scale plate installed so that the water level of the field FM-1 can be measured. For example, the water level scale plate 700-1 is installed so as to be inserted into the soil so that the scale of "0" is located at the height of the surface of the soil in the field FM-1.
The camera 800-1 is provided so as to capture a portion of the scale of the water level scale plate 700-1. Therefore, the water level in the field FM-1 can be confirmed by a person viewing the image captured by the camera 800-1. The camera 800-1 in the present embodiment may be capable of capturing a still image, but may be capable of capturing a moving image. Hereinafter, a case where the camera 800-1 captures a still image will be described.

The camera 800-1 can communicate with the water tap 100-1 installed in the same field FM-1 by short-range wireless communication. As a result, the camera 800-1 can transmit the image data (hereinafter, also referred to as water level image data) obtained by imaging the water level scale plate 700-1 to the water tap 100-1. Further, the water faucet 100-1 can transmit the water level image data received from the camera 800-1 from the wireless LAN router RT to the water management server 500 via the network NT. That is, the camera 800-1 can transmit the water level image data obtained by the imaging to the water management server 500 via the communication relayed by the water tap 100-1.
Instead of the water level scale plate 700-1 and the camera 800-1, a linear water level sensor using, for example, capacitance may be provided in the field FM. Then, the water level information measured by the water level sensor may be configured to be transmitted to the water supply management server 500 via the communication relayed by the water tap 100-1.

Further, the field FM-1 is provided with a water temperature gauge 900-1 so as to measure the temperature of the water stretched on the field FM-1.
The water temperature gauge 900-1 can also communicate with the water tap 100-1 installed in the same field FM-1 by short-range wireless communication. As a result, the water temperature gauge 900-1 can transmit the water temperature data obtained by measuring the water temperature to the water tap 100-1. Further, the water tap 100-1 can transmit the water temperature data received from the water temperature gauge 900-1 from the wireless LAN router RT to the water management server 500 via the network NT. That is, the water temperature gauge 900-1 can transmit the water temperature data obtained by the measurement to the water management server 500 via the communication relayed by the water tap 100-1.

Similarly, in the field FM-2, a water level scale plate 700-2, a camera 800-2, and a water temperature gauge 900-2 are installed. As a result, the camera 800-2 can transmit the water level image data obtained by the imaging to the water management server 500 via the relay of the water tap 100-2. Further, the water temperature gauge 900-2 can transmit the water temperature data indicating the measured water temperature to the water management server 500 via the relay of the water tap 100-2.

In the following description, when the water level scale plates 700-1 and 700-2 are not particularly distinguished, they are described as the water level scale plate 700. Further, when the cameras 800-1 and 800-2 are not particularly distinguished, they are described as the camera 800. Further, when the water temperature gauges 900-1 and 900-2 are not particularly distinguished, they are described as water temperature gauge 900.

In the present embodiment, the farmer pays the irrigation water usage fee to the irrigation provider who operates the business of supplying the irrigation water to the field FM as the consideration for receiving the irrigation water of his own field. Therefore, the water management server 500 in the present embodiment is configured to calculate the water usage fee for each field owner based on the flow rate detected by the water sensor 300 corresponding to each of the water taps 100. The water provider charges the farmer for the calculated water usage fee.

The field master terminal 600-1 is a network terminal device used by the field owner (farmer) of the field FM-1. The field owner terminal 600-1 is, for example, a personal computer, a smartphone, a tablet terminal, or the like owned by the field owner of the field FM-1. Similarly, the field owner terminal 600-2 is a network terminal device used by the field owner of the field FM-2. In the following description, when the field main terminals 600-1 and 600-2 are not particularly distinguished, they are described as the field main terminal 600.

A configuration example of the water sensor 300 will be described with reference to FIG. As shown in the figure, the water sensor 300 includes a communication unit 301 and a flow rate sensor 302.
The communication unit 301 communicates with the water tap 100 located within the communication distance by short-range wireless communication.
The flow rate sensor 302 detects the flow rate of water at the site where the flow rate sensor 302 is attached. The flow rate information detected by the flow rate sensor 302 is transmitted by the communication unit 301 to the water tap 100 of the communication partner.
The water sensor 350 may have the same configuration as that shown in FIG.

A configuration example of the water management server 500 will be described with reference to FIG. The water management server 500 in the figure includes a communication unit 501, a control unit 502, and a storage unit 503.

The communication unit 501 executes communication corresponding to the network NT. By providing the communication unit 501, the water management server 500 can communicate with the water sensor 350, the water supply plug 100 and the drain plug 200 of each field FM, from the network NT via the wireless LAN router RT.

The control unit 502 executes various controls in the water management server 500. The function as the control unit 502 is realized, for example, by executing a program by a CPU (Central Processing Unit) included in the water management server 500.
The control unit 502 in the present embodiment includes a water amount acquisition unit 521, a water management information management unit 522, and a charge handling processing unit 523 as functional units related to charge setting according to the field owner's use of water.
Since the water level / water temperature report-related processing unit 524 is a functional unit related to the second embodiment described later, the description thereof is omitted here. Further, since the water supply start detection unit 525 and the water tap control unit 526 are functional units related to the third embodiment described later, the description thereof is omitted here. In the present embodiment, the water level / water temperature reporting related processing unit 524, the water supply start detection unit 525, and the water tap control unit 526 may be omitted.

The water amount acquisition unit 521 acquires a detected value (flow rate value) of the amount of water flowing through the water tap 100 provided so as to supply water to the field.
The water management information management unit 522 manages the water management information stored in the water management information storage unit 532. The water supply management information management unit 522 stores the water usage amount based on the detected value of the acquired water amount in the storage unit 503 as water supply management information in association with the field owner of the field FM in which the water faucet 100 is installed.
The charge handling treatment unit 523 calculates the water usage charge of the farmer based on at least the water management information as the treatment corresponding to the water usage charge.

Further, the storage unit 503 stores various information used by the control unit 502. The storage unit 503 in the present embodiment includes a field main information storage unit 531 and a water management information storage unit 532. Since the water tap management information storage unit 533 is a part related to the third embodiment described later, the description thereof is omitted here. In this embodiment, the water faucet management information storage unit 533 may be omitted.
The field owner information storage unit 531 stores the field owner information. Although not shown, the field owner information is information in which predetermined information about the field owner is associated with each field owner ID (user ID) that uniquely indicates the field owner. The predetermined information about the farmer is the name and contact information (address, telephone number, e-mail address, etc.) of the farmer. Further, for security of the field owner's personal information, for example, the password associated with the field owner ID may be included in the field owner information.
Further, when the field owner terminal 600 exists at the site of the field FM according to the field owner working in the field FM, the field owner terminal 600 communicates with the faucet 100. It can communicate with the water management server 500. At this time, the field owner terminal 600 and the water tap 100 that are communicably connected may be required to belong to the field owner of the corresponding field FM. In such a case, for example, the above user ID and password may be used as an authentication key, and the water tap 100 and the field main terminal 600 may be configured to perform pairing.

The water management information storage unit 532 stores water management information. FIG. 4 shows an example of water management information.
The water management information in the figure corresponds to the field owner with 1 record. One record of water supply management information has a structure in which each area of the faucet ID and the water supply usage history information is associated with each field owner ID.
In the area of the field owner ID, the field owner ID of the field owner who receives the water supply by contracting with the water provider is stored. In the figure, the field owner ID of "FM0001" indicates the field owner of the field FM-1 shown in FIG. 1, and the field owner ID of "FM0002" indicates the field owner of the field FM-2.

In the water tap ID, a water tap ID uniquely indicating the water tap 100 installed in the field FM of the field owner indicated by the field owner ID included in the same record is stored. Specifically, the faucet ID of "F0001" associated with the field owner ID of "FM0001" in the figure indicates the faucet 100-1 installed in the field FM-1 of FIG. Further, in the field owner ID of "FM0002", two water tap IDs "F0011" and "F0012" are stored. The water tap ID of "F0011" indicates the water tap 100-2A installed in the field FM-2 of FIG. 1, and the water tap ID of "F0012" indicates the water tap installed in the field FM-2 of FIG. Shows 100-2B.

The water usage history information in the figure is associated with each faucet ID. That is, the water usage history information includes information indicating the amount of water discharged from one of the corresponding water taps 100 in correspondence with the time axis. Such water use history information indicates the amount of water supplied to the field from the water tap 100 in the past. That is, the amount of water (water usage amount) used by the field owner for his field FM in the past is shown corresponding to each water tap 100.
In the figure, corresponding to the water tap ID of "F0001", the water usage history information of the file name "log0001" is stored. Further, corresponding to the water tap ID of "F0011", the water usage history information of the file name "log0011" is stored. Further, corresponding to the water tap ID of "F0012", the water usage history information of the file name "log0012" is stored.
When a plurality of water tap IDs are stored as in the case of the field owner ID of "FM0002", the water supply usage history information is associated with one water supply usage history information for the plurality of water tap IDs. You may be able to do it. When one water supply usage history information is associated with a plurality of water tap IDs, the amount of water discharged from each of the plurality of water taps 100 corresponding to the plurality of water tap IDs is added up in the water supply usage history information. Then, it may be shown corresponding to the time axis.

An example of a processing procedure executed by the water management server 500 of the present embodiment for management of water management information will be described with reference to the flowchart of FIG. The management of the water management information here is a process of updating the water usage history information based on the flow rate value indicated by the detection information of the water sensor 300 received by the water management server 500.

In FIG. 1, the flow rate detected by the corresponding water sensor 300 for each water tap 100 indicates the flow rate of water discharged from the corresponding water tap 100, as described above. Then, each water sensor 300 transmits the detection information indicating the detected flow rate value to the water management server 500 at regular time intervals. When transmitting the detection information, the water sensor 300 includes the water tap ID indicating the water tap 100 corresponding to itself in the detection information.
Therefore, the water amount acquisition unit 521 of the water management server 500 waits for the detection information transmitted from any one of the water sensors 300 to be received (step S101-NO).

When the detection information is received from any of the water sensors 300 (step S101-YES), the water amount acquisition unit 521 acquires the faucet ID and the flow rate value from the received detection information (step S102). ..
Then, the water supply management information management unit 522 searches for the water supply usage history information associated with the water tap ID acquired in step S102 from the water supply management information storage unit 532, and with respect to the searched water supply usage history information. The flow rate value acquired in the same step S102 is newly stored in association with the current date and time (step S103). In this way, the water usage history information is updated by the water management information management unit 522. The water management server 500 manages water management information including water usage history information corresponding to each water tap 100 by periodically executing the above processing.

Subsequently, with reference to the flowchart of FIG. 6, an example of a treatment procedure for the water management server 500 of the present embodiment to calculate the water usage fee corresponding to the field owner of 1 will be described.
When the predetermined water usage charge calculation timing for the field owner to be charged in 1 is reached, the charge handling processing unit 523 in the water management server 500 is associated with the field owner ID of the field owner to be charged. From the usage history information, the water usage history information included in the date and time range corresponding to the current charge calculation target period is acquired (step S201).
When a plurality of water taps 100 are provided in one field as in the field FM-2 of FIG. 1, a plurality of water supply management information corresponding to the field owner ID of “FM0002” in FIG. 4 are provided. A plurality of water usage history information corresponding to each of the water taps 100 of the above is stored. In such a case, in step S201, the water usage history information included in the date and time range corresponding to the current charge calculation target period is acquired from each of the plurality of water usage history information.

Next, the charge handling processing unit 523 calculates the amount of water used in the current charge calculation target period by using the water usage history information in the current charge calculation target period acquired in step S201 (step S202).
In the water usage history information, the flow rate value is associated with the date and time. Therefore, the charge handling processing unit 523 integrates the flow rate value for each unit time for which a significant flow rate value larger than zero is obtained in the water usage history information, thereby making the field FM of the field owner subject to the charge calculation this time. The amount of water supplied to the field from the installed faucet 100 is calculated. The amount of water calculated in this way is the amount of water used by the farmer for cultivating the crops of his field FM, that is, the amount of water used. When a plurality of water taps 100 are provided in one field, the charge handling processing unit 523 can add up the amount of water calculated from the water usage history information acquired for each of the plurality of water taps 100. Calculate the amount of water used.

Subsequently, the charge handling processing unit 523 calculates the water usage charge based on the water usage amount calculated in step S202 (step S203). That is, in the present embodiment, a pay-as-you-go system is adopted in which the water usage fee varies depending on the water usage amount. As an example of the charge setting based on the pay-as-you-go system according to the amount of water used, the basic charge and the amount obtained by multiplying the unit price according to the unit water amount and the amount of water used are added as an example. be able to. However, the charge setting based on the pay-as-you-go system can be considered in various ways, and is not particularly limited in this embodiment.

In addition, the charge handling processing unit 523 performs processing (billing-related processing) related to billing the field owner of the water usage charge calculated in step S203 (step S204).
As a billing-related process, the charge handling processing unit 523 can notify, for example, the water usage charge (billing amount) to the field owner terminal 600 of the farm owner to which the charge is billed. For notification, for example, create an e-mail for notifying the water usage fee (billing amount) addressed to the e-mail address registered in the field owner information stored in the field owner information storage unit 531 and send the created e-mail. It is possible to take the form of transmission. Alternatively, when the water management application provided by the water provider is installed in the field owner terminal 600, the field owner ID registered in the field owner information is registered as a user account in the water management application. You may want to send a notification.

As described above, the water management server 500 of the present embodiment provides water management information including water usage history information in which the amount of water discharged from each of the water taps 100 in the field FM corresponds to the time. It is designed to be managed in correspondence with each.
Then, the water management server 500 is configured to calculate the water usage fee based on the water usage history information. In this way, by calculating the water usage fee of the farm owner based on the water usage amount of each field owner, it is possible to appropriately set the fee paid by the farm owner in relation to the water management work of the field. Become.

It is also possible to use a weight system for the water usage fee by integrating the valve opening and the valve opening time of each of the plurality of water taps 100 on one pipeline PL. In this case, there is a pressure difference between the downstream side and the upstream side of the pipeline PL, and as much as the water tap 100 connected to the downstream side, a large amount of water can be discharged even at the same opening degree. Therefore, in the case of the pay-as-you-go system as described above, for example, when the water faucet 100 is connected sequentially from the upstream to the downstream of one pipeline PL, the flow rate is sequentially adjusted from the downstream to the upstream. It is possible to set the water usage fee by weighting.

<Second Embodiment>
Subsequently, the second embodiment will be described. For the field owner, the information on the water level and water temperature in the field FM is important for the good growth of the crop. For this reason, it is preferable for the field owner to periodically grasp the water level and water temperature during the cultivation period from rice planting to harvest, for example, in the case of rice cultivation. However, it is a considerable burden for the farmer himself to perform such work.
Therefore, in the present embodiment, the water provider provides the field owner with a service (water level / water temperature reporting service) for reporting the water level and the water temperature in the field FM. In providing such a water level / water temperature reporting service, the communication between the camera 800 installed in the field FM and the water temperature gauge 900 is used for collecting information on the water level and the water temperature as described in FIG. Then, the water management server 500 performs. Then, regarding the report of the water level and the water temperature information to the field owner, the water management server 500 prepares a report and sends it to the field owner terminal 600. As a result, labor saving is achieved when the field owner grasps the water level and the water temperature in the field FM.
Hereinafter, the configuration for realizing the above water level / water temperature reporting service will be described.

The overall configuration of the water management system corresponding to this embodiment may be the same as in FIG.

Further, a configuration example of the water management server 500 in this embodiment will be described again with reference to FIG. The control unit 502 in the water management server 500 in the present embodiment further includes, for example, the water level / water temperature of the configuration including the water amount acquisition unit 521, the water management information management unit 522, and the charge handling processing unit 523 of the first embodiment. A report-related processing unit 524 is provided.
In addition, in this embodiment, it is not always necessary to collect the charge according to the water supply of the first embodiment, and in this case, the water amount acquisition unit 521, the water management information management unit 522 and the charge handling unit 523. May be omitted.

Further, the water management information stored in the water management information storage unit 532 in the present embodiment has, for example, the contents shown in FIG. 7. The water supply management information in the figure corresponds to each field owner ID, and further includes a region of a camera ID and a water temperature gauge ID in addition to the water tap ID and the water supply usage history information shown in FIG.
In the area of the camera ID, a camera ID uniquely indicating the camera 800 installed in the field FM corresponding to the field owner indicated by the field owner ID included in the same record is stored. In the example of the figure, "C0001" is stored as the camera ID of the camera 800-1 installed in the field FM-1 of FIG. 1, and "C0002" is stored as the camera ID of the camera 800-2 installed in the field FM-2. Is stored as an example.
Further, in the area of the water temperature gauge ID, a camera ID uniquely indicating the water temperature gauge 900 installed in the field FM corresponding to the field owner indicated by the field owner ID included in the same record is stored. In the example of the figure, "WT0001" is stored as a water temperature gauge ID indicating the water temperature gauge 900-1 installed in the field FM-1 of FIG. 1, and the water temperature gauge 900-2 installed in the field FM-2 is shown. An example in which "WT0002" is stored as the water temperature gauge ID is shown.

Subsequently, with reference to the flowchart of FIG. 8, an example of a processing procedure executed by the water management server 500 in the present embodiment for collecting water level and water temperature data for each field FM will be described.
In the present embodiment, the camera 800 installed in the field FM periodically images the water level scale plate 700 at a predetermined date and time (for example, at predetermined times of the day), and the water level image data obtained by the imaging. Is transmitted from the water tap 100 to the water management server 500 via the network NT.
In addition, the water temperature gauge 900 installed in the field FM also measures the water temperature periodically at a predetermined date and time, and the water temperature information indicating the measured water temperature is transmitted from the faucet 100 to the water management server 500 via the network NT. I will send it.

Therefore, the water level / water temperature report-related processing unit 524 in the water management server 500 waits for the water level image data transmitted from any of the cameras 800 to be received (step S301-NO). Further, it waits for the water temperature information transmitted from any of the water temperature gauges 900 to be received (step S303-NO).

When the water level image data is received (step S301-YES), the water level / water temperature reporting related processing unit 524 stores the received water level image data in the water usage history information (step S302). At this time, the water level / water temperature report related processing unit 524 acquires the camera ID added to the received water level image data. The camera ID added to the water level image data indicates the camera 800 from which the water level image data is transmitted.
The water level / water temperature report related processing unit 524 searches for a record storing the acquired camera ID from the water management information storage unit 532, and the water level received in step S301 in the water usage history information included in the searched record. Image data is newly stored in association with the current date and time. In this way, the water level image data is acquired corresponding to the field owner of the field FM in which the camera 800 from which the water level image data is transmitted is installed.

When the water temperature information is received (step S303-YES), the water level / water temperature reporting related processing unit 524 stores the water temperature indicated by the received water temperature information in the water usage history information (step S304). At this time, the water level / water temperature report related processing unit 524 acquires the water temperature gauge ID included in the received water temperature information together with the data indicating the water temperature. The water temperature gauge ID included in the water temperature information indicates the water temperature gauge 900 from which the water temperature information is transmitted.
The water level / water temperature report related processing unit 524 searches for a record storing the acquired water temperature gauge ID from the water management information storage unit 532, and the water usage history information included in the searched record is received in step S303. The water temperature indicated by the water temperature information is newly stored in association with the current date and time. In this way, the water temperature information is acquired corresponding to the field owner of the field FM in which the water temperature gauge 900, which is the transmission source of the water temperature information, is installed. After the processing in step S304, the processing is returned to step S301.
By constantly executing the processing shown in the figure, the water level image data captured by the camera 800 in each field FM and the water temperature measured by the water temperature gauge 900 correspond to the time and correspondence for each field owner. It is collected so that it can be attached.

Subsequently, referring to the flowchart of FIG. 9, an example of a processing procedure for reporting the water level and the water temperature to the field owner by using the water level image data and the water temperature information collected by the water management server 500 as described above. Will be explained. The process shown in the figure is a process for reporting the history of water level and water temperature corresponding to one field owner.
The water level / water temperature report-related processing unit 524 is waiting for the report distribution timing to be reached based on the report distribution date and time set for one field owner (step S401-NO).
Here, the report delivery date and time may be set according to the request from the farmer. The farmer can, for example, specify a predetermined time on a fixed day of the week as the report delivery date and time. Such designation of the report delivery date and time is set, for example, by the farmer operating the farmer terminal 600 to access the website for specifying the report delivery date and time provided by the water management server 500 and setting on this website. You should be able to do it. The report delivery date and time specified in this way is stored so as to be included in the field owner information, for example. The report delivery timing may be set, for example, as a predetermined time before the designated report delivery date and time.

When it is determined that the report distribution timing has been reached (step S401-YES), the water level / water temperature report-related processing unit 524 will use the water usage history information included in the record corresponding to the field owner to be distributed. The water level image data and the water temperature information collected in the past fixed period are acquired (step S402).
Here, the fixed period for which the water level image data and the water temperature information are acquired in step S402 differs depending on, for example, a designated report delivery date and time. As a specific example, if the specified report delivery date and time specifies Monday of each week and the water level image data and water temperature information are collected at predetermined times of the day, for example, last week's The water level image data and the water temperature information acquired during the period from Monday to the previous Sunday are acquired.

Next, the water level / water temperature report-related processing unit 524 creates a report using the water level image data for a certain period acquired in step S402 and the water temperature information (step S403). The report includes, for example, the contents in which the water level image data in a certain period is laid out so that the correspondence with time can be understood, and the contents in which the water temperature is shown by a graph or a table according to the passage of time. Regarding the water level, the water level may be specified by performing image analysis on the water level image data, and the specified water level may be shown by a graph, a table, or the like according to the passage of time and time.
Further, the report may be created as a file in a predetermined file format that can be displayed on the field main terminal 600.

Next, the water level / water temperature report-related processing unit 524 transmits the report prepared in step S403 to the field owner terminal 600 of the field owner to be reported (step S404). As an example, when the report is sent by e-mail, the water level / water temperature report-related processing unit 524 sends the report to the e-mail address stored as the contact information in the field owner information of the field owner to be reported. Just send an email. The report may be described in the body of the email or may be an attachment. Alternatively, when the report is viewed on the water management application installed in the field owner terminal 600, the application in which the user account is registered with the field owner ID registered in the field owner information. You may also send a report to.
The farmer can view the report received by the farmer terminal 600 by displaying it on the display unit of the farmer terminal 600. As a result, the farmer can confirm the water level of his field in the past fixed period by looking at the image of the water level image data, and confirm the water temperature by looking at the graph or the table.

Here, when reporting the water level, for example, a water level measuring device for measuring the water level is arranged in the field FM, the water level measured by the water level measuring device is collected by the water management server 500, and the collected water level is reflected in the report. You may let me. However, the measurement result of the water level of the water level measuring device may have a large error and low reliability, for example. On the other hand, in the case of water level image data, since the water level scale and the actual water level are obtained as images, it is possible to always grasp the accurate water level.

Then, instead of providing the water level / water temperature reporting service realized as described above, the water provider in the present embodiment can receive a fee as a consideration from the farmer. In this case, the charge handling processing unit 523 of the water management server 500 executes billing-related processing by adding, for example, a charge as a consideration for providing the water level / water temperature reporting service to the water usage charge calculated in the first embodiment. You may do so. In addition, the water level / water temperature reporting service may be an optional service that can be enjoyed only by the farmer who wishes to do so. In this case, the field owner information stored in the field owner information storage unit 531 also stores information indicating whether or not the user is a user of the water level / water temperature reporting service. Further, the application for the water level / water temperature reporting service or the application for suspension may be made, for example, by accessing the website provided by the water management server 500 by the field master terminal 600.

The report in the present embodiment may report, for example, on at least one of the water level and the water temperature.

<Third Embodiment>
Subsequently, the third embodiment will be described. As shown in FIG. 1, the water supply to the field FM is performed by discharging the water supply supplied from the farm pond FP via the pipeline PL from the water tap 100.
Here, if the tap portion of the faucet 100 remains closed after the supply of water from the farm pond FP is started, the air remaining in the pipeline PL is compressed and becomes the faucet 100. A phenomenon called an air hammer that applies excessive pressure may occur. If an air hammer occurs, the excessive pressure may damage the faucet.

Therefore, in the present embodiment, the water supply management server 500 is configured to be controllable so as to open the water tap 100 at the timing corresponding to the start of supply of water from the farm pond FP. By performing such control, when the supply of water from the farm pond FP is started, the air remaining in the pipeline PL is discharged to the outside through the water flow path in the water tap 100. As a result, the generation of the air hammer is prevented, and the damage of the water tap is also prevented.
Further, the water tap 100 for preventing the generation of the air hammer is opened under the control of the water management server 500 without human work. As a result, in the present embodiment, labor saving is achieved regarding the prevention of the generation of the air hammer.

Then, the water supply provider in the present embodiment provides the field owner with a service (air hammer prevention service) for opening and closing the water tap related to the prevention of the air hammer as described above. Hereinafter, the configuration for realizing the air hammer prevention service will be described.

First, a configuration example of the water tap 100, which is the target of open / close control in the present embodiment, will be described with reference to FIGS. 10 and 11. In each figure, the structure of the water tap 100 is shown by a cross-sectional view of the water tap 100 as viewed from the side.
In the water tap 100, the water supply pipe 101 is a pipe to which water is supplied from the pipeline PL. The lower end side of the water supply pipe 101 is connected to the end portion of the pipeline PL as shown in the figure. As a result, as shown by the arrow α in FIG. 10, the water supplied from the pipeline PL is supplied to the hollow portion 101a in the water supply pipe 101.

A discharge pipe 102 is attached to the upper end of the water supply pipe 101. The hollow portion 102a of the discharge pipe 102 communicates with the hollow portion 101a of the water supply pipe 101. Further, in the connecting portion between the water supply pipe 101 and the discharge pipe 102, the diameter of the hollow portion 101a of the water supply pipe 101 is larger than that of the water stop valve ball 104, and the diameter of the hollow portion 102a of the discharge pipe 102 is water stop. It is smaller than the tap ball 104. Further, since the opening on the hollow portion 101a side of the hollow portion 102a of the discharge pipe 102 is tapered as shown in the figure, when the water stop valve ball 104 floats up to the opening of the hollow portion 102a, it is not shown. The hollow portion 102a is set so as to be accommodated in a position where the water stop valve ball 104 can be closed.
In the present embodiment, the faucet portion is formed by the water stop valve ball 104 and the opening on the lower side of the hollow portion 102a.

Further, the cup 103 is provided so as to cover the upper side of the discharge pipe 102. A hollow portion 103a is formed between the inside of the cup 103 and the discharge pipe 102. The hollow portion 103a serves as a path until the water discharged from the hollow portion 102a of the discharge pipe 102 is discharged to the outside.

The water stop valve ball 104 is a spherical member having buoyancy. The water stop valve ball 104 is provided in the hollow portion 101a as shown in the figure.
Further, the shaft portion 105 is provided so as to penetrate the hollow portion 102a of the cup 103 and the discharge pipe 102. The shaft portion 105 is movable in the vertical direction within a certain movable range as shown by the arrow A in FIG. 10 by the plug driving portion 111.

The shaft portion 105 shown in FIG. 10 is in a state of being positioned at the top in the movable range, for example. In this state, the water stop valve ball 104, which is a buoyant body, rises to the state shown in the figure due to the pressure of the water supplied from the pipeline PL to the water supply pipe 101, so that the opening of the hollow portion 102a is a water stop valve. It is in a state of being blocked by the ball 104 (closed state). By being closed in this way, the water supplied from the pipeline PL to the water supply pipe 101 is not discharged to the outside of the water supply plug 100.

On the other hand, the shaft portion 105 shown in FIG. 11 is moved downward from the state of FIG. 10 as shown by the arrow B of FIG. 11, and is in the lowest position in the movable range. In this state, the water stop valve ball 104 is pushed down by the shaft portion 105 as shown in the figure. Therefore, the water stop valve ball 104 is in a state (open state) located below the hollow portion 102a in the hollow portion 101a.
By being in the open state in this way, the water supplied from the pipeline PL to the water supply pipe 101 is flowing water by the hollow portion 101a, the hollow portion 102a, and the hollow portion 103a, as shown by the arrow β shown by the broken line in the figure. It is discharged to the outside of the water tap 100 through the path. In this way, water is supplied from the water tap 100 to the field FM. At this time, since the cup 103 is provided on the discharge pipe 102, even if the pressure of the water discharged from the hollow portion 102a is high, the cup 103 is not blown up and is passed through the hollow portion 103a to the lower side. Can be flushed to.

Further, as shown in each of FIGS. 10 and 11, for example, a case 110 is provided on the cup 103. The case 110 includes a plug drive unit 111, a control unit 112, a sensor-compatible communication unit 113, a server-compatible communication unit 114, and a power supply unit 115.
The plug driving unit 111 drives the opening and closing of the plug unit. That is, the plug driving unit 111 is in a closed state in which the water stop valve ball 104 closes the opening of the hollow portion 102a by moving the shaft portion 105 in the vertical direction, and the water stop valve ball 104 is from the opening of the hollow portion 102a. Also changes the state from the open state located on the lower side.
The plug driving unit 111 can adjust the gap between the opening of the hollow portion 102a and the water stop valve ball 104 by changing the position of the shaft portion 105 in the vertical direction in the open state. As a result, the amount of water discharged from the water tap 100 can be adjusted.

The plug drive unit 111 includes, for example, a motor and a mechanism unit that moves the shaft portion 105 in the vertical direction according to the rotation of the motor. For example, in the mechanism portion that moves the shaft portion 105 in the vertical direction, the shaft portion 105 is screwed to a predetermined position in the water faucet 100 so that the shaft portion 105 can be moved in the vertical direction by rotation, and then the shaft portion 105 is motorized. It can be configured by a structure that is designed to rotate according to the rotation of. It should be noted that other structures can be adopted as the mechanism portion for moving the shaft portion 105 in the vertical direction, and the present invention is not limited to the above example.

The control unit 112 controls the operation of the plug drive unit 111. For this purpose, the control unit 112 outputs, for example, a motor control signal for rotating the motor of the plug drive unit 111 to the plug drive unit 111.
Further, the control unit 112 transmits / receives information to / from the water sensor 300, the camera 800, and the water temperature gauge 900 at the communication distance of the sensor-compatible communication unit 113 via the sensor-compatible communication unit 113. Further, the control unit 112 transmits / receives information to / from the water management server 500 via the network NT via the server-compatible communication unit 114.

The sensor-compatible communication unit 113 communicates with the water sensor 300, the camera 800, and the water temperature gauge 900 located within the communication distance by short-range wireless communication.
The server-compatible communication unit 114 communicates with the water management server 500 via the network NT.

The power supply unit 115 supplies power to the plug drive unit 111, the control unit 112, the sensor-compatible communication unit 113, and the server-compatible communication unit 114. The power supply unit 115 includes, for example, a solar cell and a storage battery, and stores the electric power generated by the solar cell in the storage battery during the daytime. The power supply unit 115 is configured to supply the electric power stored in the storage battery as a power source.
Alternatively, the power supply unit 115 is configured to be powered by a battery of a predetermined standard such as a secondary battery or a primary battery, and then the battery is replaced when the remaining battery level is low. It may be the configuration used.

The structure of the water tap 100 in the present embodiment is not limited to the one illustrated by FIGS. 10 and 11, and other structures may be adopted.

Next, a configuration example of the water management server 500 according to the present embodiment will be described again with reference to FIG. The water supply management server 500 in the present embodiment further includes, for example, a water supply start detection unit 525 and a water tap control unit 526 with respect to the configuration of the first embodiment or the second embodiment. Further, the storage unit 503 in the present embodiment further includes a water tap management information storage unit 533.
If the fee is not collected according to the provision of water according to the first embodiment, the water amount acquisition unit 521, the water management information management unit 522, and the charge handling processing unit 523 may be omitted. Further, if the water level / water temperature reporting service corresponding to the second embodiment is not performed, the water level / water temperature reporting related processing unit 524 may be omitted.

The water supply start detection unit 525 detects that the supply of water from the farm pond FP to the water tap 100 has started based on the detection result of the water sensor 350 that detects the flow rate flowing through the water tap 100. Specifically, the water supply start detection unit 525 receives and receives the flow rate detection information transmitted at regular time intervals (for example, about 1 second to several seconds) from the water sensor 350 installed corresponding to the farm pond FP. Monitor the flow rate indicated by the flow rate detection information.

When water is not supplied from the farm pond FP to the water tap 100, no water flow is generated in the pipeline PL in the vicinity of the farm pond FP detected by the water sensor 350. At this time, the water sensor 350 detects that the flow rate is zero.
Then, a pump (not shown) for sending water from the farm pond FP to the pipeline PL is operated, and when water supply from the farm pond FP to the faucet 100 is started, pressure is applied to the farm pond FP. Water flow occurs in the nearby pipeline PL. At this time, the water sensor 350 detects a flow rate value larger than zero. That is, the water sensor 350 detects that there is a flow rate.
Therefore, the water supply start detection unit 525 indicates that the water supply from the farm pond FP is started when the monitored flow rate changes from the state of zero to the state of having a flow rate (flow rate value larger than zero). To detect.

The water tap control unit 526 opens the tap so that the tap drive unit 111 in the water tap 100 opens the tap in response to the detection that the water supply start detection unit 525 has started the supply of water. Take control.
That is, when the water tap control unit 526 detects that the water supply start detection unit 525 has started the supply of water, all the water taps 100-1, 100-2A, 100-2B (that is, that is) in each field FM. , A plug opening control signal for opening the plug portion is transmitted to all the water taps 100) that receive the water supply from the farm pond FP.

As described above, the faucet control unit 526 controls the opening of the faucet, so that all the faucets 100 that receive the water supply from the farm pond FP are at the timing corresponding to the start of the water supply from the farm pond FP. The plug is opened.
As described above, the water hammer 100 is opened at the timing corresponding to the start of the supply of water from the farm pond FP, so that the generation of the air hammer is prevented.

However, some of the water taps 100 for which opening control has been performed as described above may include those that are not originally used for water supply to the field FM. For example, soil conditions and crop growth differ from field FM to field FM. Also, the way of thinking when growing crops differs depending on the farmer. Alternatively, even in the case of a field FM that is a fallow land, it is not necessary to supply water. Therefore, even at the same time, water supply should be performed in one field FM, but water should not be supplied in another field FM, and the necessity of water supply differs depending on the field FM.
Therefore, if all the water taps 100 are left open in order to prevent the generation of the air hammer in response to the start of water supply from the farm pond FP, the following problems may occur. There is sex.
That is, when the opening control is performed as described above, if there is a water tap 100 that should not be supplied with water at present, water is also supplied to the field FM from the water tap 100. In this case, a wasteful water usage fee may be incurred. When such a problem occurs, it is troublesome for the farmer to go to the water tap 100 and manually close the water tap 100, which is not preferable in terms of labor saving.
Therefore, in the air hammer prevention service of the present embodiment, for the water tap 100 for which the water supply stop is set, after the occurrence of the air hammer is avoided by the previous opening control, the water supply management is further performed. It is returned to the closed state by the control of the server 500. As a result, it is possible to prevent wasteful use of water.

Therefore, the water tap control unit 526 is described below so that the water tap 100 set to be suspended is closed after the water is discharged from the water tap 100 by performing the opening control. Take control.
That is, in the water tap control unit 526, among the water taps 100 subject to the opening control, the tap drive unit 111 closes the tap portion for the water tap 100 that is predetermined not to be used for water supply to the field FM. The plugging control is performed so that the state is set.
Specifically, after performing the above-mentioned opening control, the water tap control unit 526 discharges the water supplied from the farm pond FP at each of the water taps 100 targeted for the opening control. Wait. Since the pipeline PL between the farm pond FP and the faucet 100 has a certain length physically, the faucet responds to the start of water supply from the farm pond FP. It takes a certain amount of time for the water to be discharged from 100.

At this time, the water tap control unit 526 is a water sensor 300 (300-1, 300) corresponding to each of all the water taps 100 (100-1, 100-2A, 100-2B) targeted for opening control. -2A, 300-2B) receives the flow rate detection information transmitted at regular intervals, and monitors the flow rate indicated by the received flow rate detection information.
In the state where the water is not discharged from the water tap 100 yet, no water flow occurs even in the pipeline PL in the vicinity of the water tap 100 provided with the water sensor 300. At this time, the water sensor 300 detects that the flow rate is zero.
Then, when the water is discharged from the water tap 100, a flow of water also occurs in the pipeline PL in the vicinity of the water tap 100 provided with the water sensor 300. At this time, the water sensor 300 detects a flow rate value larger than zero. That is, the water sensor 300 detects that there is a flow rate.
Therefore, the water tap control unit 526 discharges water from all of the water taps 100 subject to the opening control because all of the flow rates detected by each of the water sensors 300 have changed from zero to having a flow rate. It is determined that the state has been reached.

Next, the water tap control unit 526 identifies the water tap 100 that is determined not to be used for water supply among the water taps 100 that are subject to the opening control. For this purpose, the water tap control unit 526 uses the water tap management information stored in the water tap management information storage unit 533 stored in the storage unit 503.

FIG. 12 shows an example of the contents of the water tap management information. The water faucet management information in the figure is such that the water supply management server 500 receives water supply from another different farm pond in addition to the water supply and drainage management in the fields FM-1 and FM-2 shown in FIG. It corresponds to the case where the water supply and drainage management of the two fields is performed.
The water tap management information in FIG. 12 has a structure in which a farm pond ID, a water tap ID, a use flag, and a field owner ID are associated with each other.
The farm pond ID is an identifier assigned to each farm pond FP.
The water tap ID is an identifier uniquely indicating the water tap 100. For example, in the figure, the farm pond ID [P0001] is associated with three water tap IDs [F0001], [F0011], and [F0012]. This means that the faucets that receive water supply from the farm pond of the farm pond ID [P0001] are the faucet indicated by the faucet ID [F0001], the faucet indicated by the faucet ID [F0011], and the faucet, respectively. It is shown that there are three indicated by the water tap of ID [F0012].
The farm pond ID [P0001] in FIG. 1 indicates the farm pond FP in FIG. 1, and the faucet IDs [F0001], [F0011], and [F0012] are the faucets 100-1 and 100- in FIG. 1, respectively. 2A and 100-2B are shown.

Further, in the water faucet management information of FIG. 12, the farm pond ID [P0002] indicates another farm pond other than the farm pond FP of FIG. 1 that supplies water to the field to be supplied / drained by the water management server 500. .. Further, depending on the water tap management information of FIG. 12, the two taps to which the tap IDs [F0021] and [F0022] are assigned are supplied with water from the farm pond indicated by the farm pond ID [P0002]. Is shown.

The use flag is a flag indicating whether or not the water tap indicated by the associated water tap ID is permitted to be used for water supply to the field. Here, when the use flag is "1", it indicates that the use for water supply to the field FM is permitted, and when the use flag is "0", it indicates that the use for water supply to the field FM is permitted. Indicates that the use of is prohibited.
In the example of the figure, the water tap 100-1 (water tap ID [F0001]) and the water tap 100-2A (water tap ID = [F0011]) of FIG. 1 are used for water supply to the field FM. Although permitted, it has been shown that the use of water tap 100-2B (water tap ID = [F0012]) for water supply to the field FM is prohibited. That is, the water tap 100-2B is a water tap that is not used for water supply.
Further, it is shown that both the water tap of the water tap ID [F0021] and the water tap of the water tap ID [F0022] are permitted to be used for water supply to the field.

The use flag in the water tap management information can be set from the field main terminal 600. For example, the farmer operates the farmer's own terminal 600 to access the farmer's terminal 600 to access the website for setting the faucet provided by the water management server 500. Then, the field owner can operate the accessed website from the field owner terminal 600 to set permission or prohibition of use of the water tap 100 in the field FM owned by the farm owner. The contents set for the website in this way are reflected in the water faucet management information.

Further, the field owner ID indicates the field owner of the field in which the water tap 100 indicated by the corresponding water tap ID is installed.
In the figure, the water tap ID [F0001] indicating the water tap 100-1 installed in the field FM-1 is associated with the field owner ID [FM0001] indicating the field owner of the same field FM-1. ..
Further, the water tap ID [F0011] indicating the water tap 100-2A installed in the field FM-2 is associated with the field owner ID [FM0002] indicating the field owner of the field FM-2. Similarly, the water tap ID [F0012] indicating the water tap 100-2B installed in the same field FM-2 is associated with the field owner ID [FM0002] indicating the field owner of the field FM-2.
Further, the faucet IDs [F0021] and [F0022] corresponding to the two faucets in the field that receive water from the farm pond, which are not shown in FIG. 1, are the fields FM-1 and FM-2, respectively. The field owner IDs [FM0003] and [FM0004] of the field owners of different fields are associated with each other.

The water tap control unit 526 refers to the water tap management information and identifies the water tap 100 whose use flag is "0" among the water taps 100 for which opening control has been performed. Then, the water tap control unit 526 transmits a closing control signal for closing the water tap 100 to the specified water tap 100.
The control unit 112 of the water tap 100 that has received the closing control signal controls the plug driving unit 111 to close the plug portion. As a result, after the opening control is performed, the water supply to the field FM is continued as it is from the water tap 100 whose water supply is permitted by the water tap management information. On the other hand, the water supply to the field FM is stopped for the water tap 100 whose water supply is prohibited by the water tap management information. As described above, the water tap control unit 526 is configured to perform plug closing control when it is determined that the water has been discharged from the water tap 100 based on the detection result of the water sensor 300.

Subsequently, with reference to the flowchart of FIG. 13, an example of a processing procedure executed by the water management server 500 in the present embodiment in connection with the prevention of the air hammer will be described. The process shown in the figure is one of the farm pounds monitored by the water management server 500 for the start of water supply (that is, the farm pound in which the farm pound ID is stored in the faucet management information). This is a process for pounds. Therefore, the water management server 500 executes the process shown in the figure in parallel for each farm pound in which the farm pound ID is stored in the water tap management information.
Here, a case where the processing in the figure is performed for the farm pound FP shown in FIG. 1 will be described as an example.

The water sensor 350 corresponding to the farm pond FP of FIG. 1 detects the flow rate of water in the pipeline PL in the vicinity of the farm pond FP. Then, the water sensor 350 transmits the detection information indicating the detected flow rate value to the water management server 500 at regular intervals. Further, when transmitting the detection information, the water sensor 350 includes the farm pond ID [P0001] indicating the farm pond FP corresponding to the water sensor 350 in the detection information.

Therefore, the water supply start detection unit 525 of the water supply management server 500 includes detection information including the farm pound ID [P0001] indicating the farm pound FP to be monitored for the start of water supply (that is, the detection information transmitted by the water sensor 350 in FIG. 1). Waits to be received (step S501-NO).
The detection information transmitted from the water sensor 350 may include, for example, a water sensor ID uniquely indicating the water sensor 350 instead of the farm pound ID. In this case, the water management server 500 uniquely identifies the farm pond FP whose flow rate is detected by the water sensor 350 by managing the farm pond ID of the farm pond FP in association with the water sensor ID of the water sensor 350. It is possible to do.
When the detection information including the farm pound ID [P0001] indicating the farm pound FP is received (step S501-YES), the water supply start detection unit 525 acquires the flow rate value included in the received detection information (step S502). ).

Next, the water supply start detection unit 525 supplies water from the corresponding farm pond FP based on the flow rate value acquired in step S502 this time and the flow rate value acquired in step S502 prior to this time. It is determined whether or not it has been started (step S503).
In the determination of step S503, for example, the water supply start detection unit 525 may determine whether or not the flow rate value acquired in step S502 up to the previous time has changed from the state of being zero to being larger than zero. That is, in this case, control is performed so that the water tap 100 is immediately opened in response to the detection of the flow rate of water from the farm pond FP.
It should be noted that it may be determined whether or not the flow rate value has changed from a state of zero to a predetermined value larger than zero according to the predetermined margin value. It should be noted that, for example, even if it is determined that the supply of water from the farm pond FP is started when the flow rate value larger than zero is continuously acquired for a certain number of times from the state where the flow rate value is zero. good. In the case of the above two configurations, it is possible to avoid erroneously determining that the temporary water flow in the pipeline PL caused by some cause is the start of water supply from the farm pond FP, and the determination is made. It is possible to improve the reliability of the results.

When it is determined that the supply of water from the farm pond FP has not been started (step S503-NO), the water supply start detection unit 525 returns the process to step S501.
On the other hand, when it is determined that the supply of water from the farm pond FP has started (step S503-YES), the faucet control unit 526 executes the following processing.

That is, the water tap control unit 526 performs plug opening control for all the water taps 100 that receive the water supply from the farm pond FP to be monitored (step S504). The opening control of step S504 is performed as follows.
First, the water tap control unit 526 identifies the water tap as the target of the opening control. For this purpose, the water faucet control unit 526 stores the water faucet ID associated with the farm pond ID of the farm pond FP to be monitored for the start of water supply, and the water faucet management information storage unit 533 stores the water faucet management information. Get from.
Specifically, the farm pond ID of the farm pond FP to be monitored for starting water supply in this case is [P0001]. Therefore, the water tap control unit 526 in this case acquires the three water tap IDs [F0001], [F0011], and [F0012] associated with the farm pound ID [P0001] from the water tap management information. By acquiring the water tap ID in this way, it is specified that the water taps to be controlled to open are the water taps 100-1, 100-2A, and 100-2B. The faucets 100-1, 100-2A, 100-2B thus identified are all faucets 100 that receive water supply from the farm pond FP to be monitored.
Then, the water tap control unit 526 transmits a tap opening control signal to the taps 100-1, 100-2A, 100-2B specified as the target of the tap opening control as described above. In this way, the opening control in step S504 is performed.
In response to the opening control being performed as described above, each control unit 112 in the water taps 100-1, 100-2A, and 100-2B controls the plug driving unit 111 so that the plug portion is in the open state. do. As a result, all of the water taps 100 to be controlled to open are opened.
Here, the open state of the water tap 100 by the opening control in step S504 may be fully open (opening of 100%). By setting the water faucet 100 to the fully open state, the stroke distance of the water stop valve ball 104 becomes as small as possible, so that the destruction due to the phenomenon of the air hammer is further less likely to occur.

As described above, since the pipeline PL has a physical length, it is possible from the timing of the start of water supply on the farm pond FP side to the time when the supplied water is actually discharged from the water tap 100. It takes a certain amount of time.
Therefore, after all of the water taps 100 to be controlled to be opened are opened as described above, the water tap control unit 526 waits for the water tap 100 to be discharged from the water tap 100. For this purpose, the water tap control unit 526 performs the processes of steps S505 and S506 as follows.
That is, the water tap control unit 526 monitors the flow rate detected by the water sensors 300-1 corresponding to each of the water taps 100 (step S505).
The water sensors 300-1, 300-2A, and 300-2B detect the flow rate in the pipeline PL in the vicinity of the water taps 100-1, 100-2A, and 100-2B, respectively, and determine the flow rate value indicating the detected flow rate. The included detection information is transmitted to the water supply management server 500 via the water supply sensors 300-1, 300-2A, and 300-2B at regular time intervals.
Further, the detection information transmitted by the water sensors 300-1, 300-2A, and 300-2B includes the water taps of the taps 100-1, 100-2A, and 100-2B, respectively, as information indicating the corresponding taps. ID is included.

Therefore, the faucet control unit 526 is included in the received detection information in response to the detection information being received from any of the water sensors 300-1, 300-2A, and 300-2B as the process of step S505. The flow rate value to be obtained is acquired in association with the water tap ID included in the same detection information. In this way, in step S505, the flow rate detected by the water sensor 300 corresponding to each water tap 100 to be controlled to be opened is monitored.

While monitoring the flow rate in step S505 as described above, the water tap control unit 526 determines whether or not water has been discharged from all the water taps 100 subject to opening control (step S506). ..
For this purpose, the water tap control unit 526 may determine whether or not all of the flow rates detected by the water supply sensors 300 have changed from the zero state to the state larger than zero. The fact that all of the flow rates detected by the water sensor 300 have changed to a state larger than zero means that the water supplied from the farm pond FP is discharged from all the water taps 100 that are subject to opening control and are in the open state. It means that it has been done.

When it is determined that the water supply has not yet been discharged from at least one of the water taps 100 to be controlled to be opened (step S506-NO), the water tap control unit 526 returns the process to step S505. That is, the water tap control unit 526 continues to monitor the flow rate in step S505 until it is determined that water has been discharged from all the water taps 100 that are the targets of opening control.
On the other hand, when it is determined that the water has been discharged from all the water taps 100 to be controlled to open (step S506-YES), the water tap control unit 526 shifts to the following control. That is, the water tap control unit 526 shifts to the control for closing the water tap 100 whose use for water supply is prohibited among the water taps 100 targeted for opening control.
Therefore, the water tap control unit 526 first identifies, among the water taps 100 targeted for opening control, the water tap 100 whose use for water supply is prohibited (step S507). Therefore, the water faucet control unit 526 identifies the water faucet ID whose usage flag is "0" among the water faucet IDs of the faucet 100 to be opened controlled, which is stored in the water faucet management information. do. By specifying the water tap ID in this way, the water tap 100 whose use for water supply is prohibited is specified.
In the example of the water tap management information of FIG. 12, among the water tap IDs [F0001], [F0002], and [F0003], the usage flag associated with the water tap ID [F0003] is "0". Therefore, in this case, the water tap 100-2A indicated by the water tap ID [F0003] is specified as a water tap whose use for water supply is prohibited.

Then, the water tap control unit 526 performs plug closing control for the water tap 100 specified by step S507 to prohibit the use of water supply (step S508). That is, the water tap control unit 526 transmits the closing control signal to the water tap 100 specified by step S507 for which the use for water supply is prohibited.
Of the water taps 100 that have been opened by the opening control in step S504, the water tap 100 identified by step S507 receives the closing control signal. Upon receiving the closing control signal, the water tap 100 controls the plug driving unit 111 so that the plug portion that has been in the open state is closed.
As a result, among the water taps 100 subject to the opening control, the water tap 100 that is permitted to be used for water supply is maintained in an open state and is prohibited from being used for water supply. Is closed. As a result, water is supplied to the field FM that needs water supply, while water is not supplied to the field FM that does not need water supply, and proper water supply management is performed according to the setting of the faucet management information. It will be possible.

In the above description, in order to prevent the air hammer, an example in which all the water taps 100 corresponding to one farm pond FP are controlled to be in the open state is given.
However, in order to prevent the air hammer, a part of the faucet 100 corresponding to one farm pond FP may be controlled to be in the open state, and the remaining faucet 100 may be left in the closed state. In this case, the water taps 100 at regular intervals (for example, every other tap 100) may be controlled in the open state so that the air pressure is not biased among the taps 100 as much as possible.
In this way, even if some of the water taps 100 corresponding to the farm pond FP are opened, the pressure of the air applied to the water tap 100 in the closed state can be sufficiently reduced, so that the destruction by the air hammer is prevented. To. By limiting the water faucet 100 to be opened to a part of the water faucets 100 corresponding to the farm pond FP in this way, the faucet drive unit 111 operates for the faucet 100 that is not subject to control in the open state. Since it is not necessary, for example, the capacity of the secondary battery or the primary battery in the power supply unit 115 can be saved.

Then, instead of providing the air hammer prevention service realized as described above, the water provider in the present embodiment can receive a fee as a consideration from the farmer. In this case, the charge handling processing unit 523 of the water management server 500, for example, adds an air hammer prevention service to the water usage charge calculated in the first embodiment (and the charge of the water level / water temperature reporting service corresponding to the second embodiment). Billing-related processing may be performed by adding a fee as consideration for the provision of.
The air hammer prevention service may be an optional service that can be enjoyed only by the desired farmer. In this case, the field owner information stored in the field owner information storage unit 531 also stores information indicating whether or not the user is a user of the air hammer prevention service. Further, the application for the air hammer prevention service or the application for suspension may be made, for example, by accessing the website provided by the water management server 500 by the field master terminal 600.

In the description of the third embodiment, the water sensor 350 detects the flow rate of the water flowing from the farm pond FP to the pipeline PL, and the water supply start detection unit 525 in the water management server 500 is detected by the water sensor 350. It is configured to detect whether or not the water supply from the farm pond FP has started based on the flow rate.
However, in the present embodiment, for example, the water sensor 350 may be configured to detect the flow rate and detect whether or not the water supply from the farm pond FP has been started based on the detected flow rate. .. That is, the water supply start detection unit 525 may be provided in the water supply sensor 350. In this case, when the water supply start detection unit 525 of the water supply sensor 350 detects that the water supply from the farm pond FP has started, it transmits a water supply start notification to that effect to the water supply management server 500. The water tap control unit 526 of the water supply management server 500 may be configured to perform plug opening control in response to the receipt of the water supply start notification.
Further, the water supply start detection unit 525 monitors, for example, the operating state of the pump for sending water from the farm pond FP to the pipeline PL, and responds to the change from the state where the pump is stopped to the state where the operation is started. It may be possible to detect that the water supply has started. Alternatively, the pump may be provided with a water supply start detection unit 525. That is, in this case, the pump itself may be configured to detect that the water supply has started in response to the start of its own operation and transmit the crop start notification to the water management server 500.

Further, in the third embodiment, the target of the plug closing control is a water tap in which the use flag of "0" is set in the water tap management information stored in the water supply management server 500. However, for example, the water supply start detection unit 525 acquires the water level of the field FM when the opening control is performed, and when the acquired water level is equal to or higher than the water level previously specified by the field owner, this field FM. It is also possible to control the closing of the water tap provided in response to the above. In acquiring the water level, for example, the above-mentioned water level image data can be acquired from the camera 50 of the corresponding field FM, and the water level can be specified by image analysis of the acquired water level image data.
Alternatively, a water level gauge having a communication function may be installed in each field to acquire water level information transmitted from the water level gauge. At this time, a plurality of water level meters may be provided in one field FM, and the water levels measured by the plurality of water level meters may be averaged. This makes it possible to improve the reliability of the water level measurement result when the water level information is obtained by the water level gauge.

Further, the water management system of the present embodiment can provide the following services in addition to the above-mentioned air hammer prevention service.
For example, the water management system of the present embodiment can provide a field failure notification service. That is, the water management server 500 acquires the water supply amount by the water tap 100 and the state of the water level in the field FM, and determines whether or not the water level rise according to the water supply amount is obtained. When it is determined that the water level has not risen according to the amount of water supplied, the water management server 500 can transmit to the field main terminal 600 that the field FM has collapsed.
Further, the water management system of the present embodiment can provide a water supply service for measures against high water temperature. That is, a water temperature gauge is provided in the field FM so that the measurement result of the temperature of the water supplied to the field FM can be acquired by the water management server 500 via, for example, the water tap 100. Then, the water management server 500 monitors the acquired water temperature, and when the water temperature rises above a predetermined level, the water tap 100 assumes that the water temperature rises abnormally, for example, for a certain period of time or until the water temperature drops below a predetermined level. Is opened and water is supplied.
In such a high water temperature countermeasure water supply service, for example, even if the measured water level exceeds the upper limit, the water supply for a certain period of time or the water supply may be continued until the water temperature drops below a predetermined value. In addition, under the high water temperature countermeasure water supply service, countermeasures against high water temperature can be taken step by step. For example, as a primary measure, the water management server 500 transmits a water temperature rise notification notifying the field main terminal 600 of the rise in water temperature when the water temperature rises to the primary set temperature. Then, in response to the water temperature becoming the secondary set temperature higher than the primary set temperature, the water supply management server 500 supplies water to the field FM as described above as a secondary measure.
Further, the water management system of the present embodiment can provide a torrential rain countermeasure service. That is, the water management server 500 predicts whether or not torrential rain will occur based on the weather forecast. When the torrential rain is predicted to occur, the irrigation management server 500 discharges the irrigation water from the field FM with the drain plug 200 opened in advance at a time before the time when the torrential rain is predicted to occur. When is completed, the drain plug 200 is closed. When torrential rain occurs from this state, rainwater enters the field FM, and the water retention in the field FM is maintained. By performing such control, drainage from the field FM will not be concentrated when a torrential rain occurs, so that it is possible to prevent flooding of a river or the like, for example.
In addition, the water management system of this embodiment can provide the location management service of the field owner. That is, the field main terminal 600 is provided with a positioning function corresponding to GPS (Global Positioning System) or the like. Then, the field main terminal 600 transmits the position information indicating its own position obtained by positioning by the positioning function to the water management server 500. The water management server 500 stores the transmitted location information in association with, for example, the farm owner who is the owner of the farm owner terminal 600 from which the location information is transmitted. The position information of the field owner stored in this way can be used for various purposes such as being included in the behavior history of the field owner recorded in the agricultural diary and used for examining work efficiency.

<Fourth Embodiment>
Subsequently, the fourth embodiment will be described. In the present embodiment, the water management server 500 is configured to manage the water level information in the cultivation period from rice planting to harvest, for example, in the case of rice cultivation, in association with time for each field owner. In this case, the water level information may be obtained by image analysis of the water level image data received from the camera 800 as described above, for example, the field owner provides the water level management server 500 by the field owner terminal 600. It may be input by accessing the website. For example, the field FM is equipped with a water level gauge having a communication function, and the water level information measured by the water level gauge is acquired by the water management server 500 via communication. May be done.

Then, the irrigation water management server 500 in the present embodiment can transmit, for example, the water level management result (water level actual information) of the past cultivation period to the irrigation water management application of the field main terminal 600. For example, the farmer can perform an operation of requesting the actual water level information when he / she wants to refer to the past actual water level information at the time of planting. Since the water management server 500 stores, for example, the water level actual information of the cultivation period for each of a plurality of years in the past, when requesting the water level actual information, the year of the water level actual information can be specified.
The field main terminal 600 displays the water level actual information transmitted from the water management server 500 in response to the request on the water management application in a visually recognizable manner. As the display of the actual water level information, for example, a graph in which the date is shown on the horizontal axis and the water level is shown on the vertical axis can be used to show the change in the water level over the year.

By looking at the actual water level information displayed as described above, the field owner can use it as a reference for irrigation of the field in this year's cultivation, for example.
Further, in the present embodiment, the water level actual information displayed on the water level management application can be edited so that the field owner can operate and change the water level and the maintenance period of the water level. Such a function of editing the water level actual information can be used, for example, as a support tool for the farmer to make a plan for managing the water level of the field this year.
For example, the farmer specifies the actual water level information of the past year that seems to be close to the predicted weather and the condition of the field in this year, and displays it on the water management application. Then, while referring to the displayed water level actual information and considering the situation of this year, the water level and its maintenance period will be changed as appropriate.
The water level actual information edited as described above is stored in the water management server 500 as a water level management plan for this year, and is called by the farm owner as needed on the water management application of the field owner terminal 600. It can be displayed for confirmation and correction.
As described above, in the present embodiment, the water provider can provide, for example, a water level record providing service that provides the field owner with past water level record information. Then, the water management server 500 of the present embodiment can execute billing-related processing for the charge corresponding to the water level record providing service.

The water level actual information by the water management application may be displayed in cooperation with the agricultural diary information recorded by the water management application or the agricultural diary application having a function as an agricultural diary. The agricultural diary information shows the daily temperature, water temperature, sunshine hours, and the like. The water management application can effectively support the accumulation of water management know-how by presenting information such as temperature, water temperature, and sunshine duration in such agricultural diary information together with water level actual information.
In addition, information on water management know-how accumulated by a certain field owner may be provided to a third party for a fee or free of charge. By providing information on such water management know-how to new farmers, it becomes possible to promote the accumulation of know-how of new farmers.

It should be noted that the service of each of the above embodiments and the fee collection according to the provision of the service may be performed by combining at least two of the services of each embodiment, or one of them may be performed independently. May be good.
Further, the services of each of the above embodiments may be provided by the same vendor or by different vendors.

A program for realizing the functions of the water management server 500 and the water tap 100 described above is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read by the computer system and executed. Thereby, the above-mentioned water supply management server 500 and the water tap 100 may be processed. Here, "loading and executing a program recorded on a recording medium into a computer system" includes installing the program in the computer system. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. Further, the "computer system" may include a plurality of computer devices connected via a network including a communication line such as the Internet, WAN, LAN, and a dedicated line. Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, and a storage device such as a hard disk built in a computer system. As described above, the recording medium in which the program is stored may be a non-transient recording medium such as a CD-ROM. The recording medium also includes an internal or external recording medium accessible from the distribution server for distributing the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program in a format that can be executed by the terminal device. That is, the format stored in the distribution server does not matter as long as it can be downloaded from the distribution server and installed in a form that can be executed by the terminal device. It should be noted that the configuration in which the program is divided into a plurality of parts and downloaded at different timings and then combined by the terminal device, or the distribution server for distributing each of the divided programs may be different. Furthermore, a "computer-readable recording medium" is a volatile memory (RAM) inside a computer system that serves as a server or client when a program is transmitted via a network, and holds the program for a certain period of time. It shall include things. Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned function in combination with a program already recorded in the computer system.

100 (100-1, 100-2A, 100-2B) Water faucet, 200 (200-1, 200-2A, 200-2B) Drainage faucet, 300 (300-1, 300-2A, 300-2B), 350 Water sensor, 500 water management server, 501 communication unit, 502 control unit, 503 storage unit, 521 water volume acquisition unit, 522 water management information management unit, 523 charge handling processing unit, 524 water level / water temperature reporting related processing unit, 525 water supply start Detection unit, 526 Water faucet control unit, 513 Field main information storage unit, 532 Water management information storage unit, 533 Water faucet management information storage unit, 600 (600-1,600-2) Field main terminal, 700 (700-1) , 700-2) Water level scale plate, 800 (800-1,800-2) camera, 900 (900-1,900-2) water temperature gauge

Claims (2)

A water tap provided to supply the water supplied from the water supply source via the running water route to the field, a drain plug provided to discharge the water from the field, and a water management server connected to the network. It is a water management system equipped with
A pump that supplies water to the running water path,
A water sensor provided to detect the flow rate of water flowing in the water flow path and having a communication function, and a water sensor.
A water supply start detection unit provided in the water flow path or the pump, and
Equipped with
The water tap and drain plug include a power supply unit and a network communication unit.
The water supply start detection unit is configured to detect whether or not water supply from the water supply source has been started, and to transmit the detection result to the water supply management server.
Equipped with a water level gauge installed in the field
The water level gauge transmits the measurement result to the water management server by the communication function provided in the water level gauge or via the communication relayed by the water faucet.
The water management server stores the identifier of the water supply source and the identifier of the water tap in association with each other.
The water management server is configured to be controllable so that the tap is open.
The water management server controls to open the drain plug to drain water from the field at a time before the time when torrential rain is predicted to occur, and then close the drain plug. Water management system. A water tap provided to supply the water supplied from the water supply source via the running water route to the field, a drain plug provided to discharge the water from the field, and a water management server connected to the network. It is a water management system equipped with
A pump that supplies water to the running water path,
A water supply start detection unit provided in the water flow path or the pump, and
Equipped with
The water tap and drain plug include a power supply unit and a network communication unit.
The water supply start detection unit is configured to detect whether or not water supply from the water supply source has been started, and to transmit the detection result to the water supply management server.
The irrigation management server transmits information related to the water level based on the water level information input by the field master terminal that has accessed the website provided by the irrigation management server to the field master terminal.
The field main terminal displays information related to the transmitted water level in a visually recognizable manner.
The transmitted information related to the water level can be edited according to the operation performed on the field main terminal, and the information related to the edited water level can be stored in the water management server. Water management system.

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