Field water management device, terminal device, and field water management method

Abstract

To provide a field water management device that can incorporate weather information into the management status of each field displayed on a terminal device.SOLUTION: Provided is a field water management device connected to a terminal device via an information and communication network, comprising: a field management unit that manages a field ID that uniquely identifies each field, field identification information linked to the field ID, water supply and drainage equipment identification information that identifies water supply and drainage equipment including water supply equipment and drainage equipment installed in each field, and field management information including the water supply and drainage status of each field, and remotely controls the water supply and drainage equipment; a weather information acquisition unit that acquires weather information including weather forecast values for the area in which each field is located from a weather information providing device; and a weather information providing unit that transmits the weather information acquired by the weather information acquisition unit to the terminal device, the field management unit remotely controlling the water supply and drainage equipment according to a water supply and drainage schedule that reflects the weather information requested by the terminal device.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a field water management device, a terminal device, and a field water management method.

Background Art

[0002] Patent Document 1 discloses a water supply faucet and a drain faucet provided with a field electric actuator for operating a displacement mechanism for controlling water supply to a field or drainage from the field. By using these water supply faucets and drain faucets, it becomes possible to remotely control water supply to the field and drainage from the field via a field water management device.

[0003] The field electric actuator is a control device for controlling a water supply faucet or a drain faucet, and includes an actuator having an electric motor for operating the water supply faucet or the drain faucet, and an electronic circuit for controlling the actuator and communicating with a field water management device.

[0004] Patent Document 2 discloses a water supply control device including a water supply faucet, an actuator for operating the water supply faucet, a water supply control unit for controlling the actuator, an electronic control circuit having a communication unit for communicating with a field water management server, and a storage battery for supplying power to the electronic control circuit and the actuator, a remote operation terminal for setting and inputting remote operation information for the water supply control device, and a field water management server for receiving the remote operation information from the remote operation terminal and remotely controlling the corresponding water supply control device.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] By utilizing the technologies disclosed in Patent Documents 1 and 2, a field water management system can be constructed that includes a field water management device for remotely controlling a water supply device or drainage device based on the water level measured by a water level gauge for each field equipped with a water supply device with a water tap, a drainage device with a drainage weir, and water supply and drainage equipment including a water level gauge, and a terminal device for transmitting a water supply request or drainage request to the field water management device for a predetermined field to be controlled.

[0007] The water level, water temperature, and operating status of water supply and drainage equipment in each field managed by the field water management system are transmitted to a terminal device via an information and communication network and displayed on the terminal device's display. This allows farmers, who are the managers of each field, to visually check the information displayed on the terminal device, understand the condition of each field, and then perform the necessary tasks.

[0008] However, relying solely on the field water level, water temperature, and operating status of water supply and drainage equipment displayed on the terminal device may not always be sufficient to determine the necessary tasks. For example, weather significantly impacts agricultural work, and understanding weather fluctuations several days in advance is crucial for performing tasks appropriately.

[0009] Generally, farmers can obtain weather information from weather information services via terminal devices. However, the free weather information provided covers a fairly wide area, making it difficult to obtain weather information for the limited area where the fields to be worked are located. To obtain the desired weather information, field managers had to individually use paid weather information services. Even then, analyzing the obtained weather information and selecting appropriate work according to the condition of each field was not an easy task.

[0010] In view of the above-mentioned problems, the object of the present invention is to provide a field water management device, a terminal device, and a field water management method that can incorporate weather information into the management status of each field displayed on the terminal device.

[0011] To achieve the above objectives, the first characteristic configuration of the field water management device according to the present invention is a field water management device connected to a terminal device via an information and communication network, comprising: a field management unit that manages field management information including a field ID that uniquely identifies each field, field identification information linked to the field ID, water supply and drainage equipment identification information that identifies water supply and drainage equipment including water supply and drainage equipment installed in each field, and the water supply and drainage status of each field, and remotely controls the water supply and drainage equipment; a weather information acquisition unit that acquires weather information including weather forecast values ​​for the area where each field is located from a weather information provision device; and a weather information provision unit that transmits the weather information acquired by the weather information acquisition unit to the terminal device, wherein the field management unit is connected to the terminal device. The request is sent from the equipped request processing unit and operated by the manager of each field. The key feature is the remote control of the water supply and drainage equipment according to the water supply and drainage requirements.

[0012] The field water management system can acquire weather information, including weather forecasts for the area where the field is located, from a weather information provider via a weather information acquisition unit, and provide the necessary weather information to each terminal device owned by the farmer via the weather information provider unit. When a water supply and drainage request is made by the farmer based on the weather information displayed on the terminal device, the field water management system can remotely control the water supply and drainage equipment in the corresponding field appropriately according to the request. For example, it becomes possible to predict fluctuations in the field water level based on precipitation, and to predict fluctuations in the field water temperature based on air temperature, thereby contributing to appropriate water supply and drainage management.

[0013] The second characteristic configuration is that, in addition to the first characteristic configuration described above, the weather information provision unit transmits to the terminal device the accumulated temperature calculated based on the average temperature included in the weather forecast value, using the base date specified by the terminal device as the reference point.

[0014] Accumulated temperature refers to the sum of the average daily temperatures over a certain period, and is used as an indicator of whether or not there is sufficient heat for crop growth. By displaying the accumulated temperature for a specified period in each field, the growth status of the crops can be understood. When the accumulated temperature is transmitted from the terminal device based on a specified base date, for example, the accumulated temperature obtained by setting the transplanting date as the base date can be used to predict the heading date, and the accumulated temperature obtained by setting the heading date as the base date can be used to determine the harvesting time, thus increasing convenience.

[0015] The first characteristic configuration of the terminal device according to the present invention is via an information and communication network Includes water supply and drainage systems for each field. Water supply and drainage equipment Remote control A terminal device connected to a field water management system, which is installed in the field to be managed by the field water management system. The aforementioned The system includes a display processing unit that acquires the water supply and drainage status from water supply and drainage equipment and weather information including weather forecast values ​​for the area where the field is located, and displays the water supply and drainage status of the field and the weather information in association with each other on the display unit, and a request processing unit that requests the field water management device to perform management including water supply and drainage treatment for the field.

[0016] Farmers can set an appropriate water supply and drainage schedule for their fields by referring to a display that shows the water supply and drainage status of water supply and drainage equipment installed in the field, including water supply and drainage equipment, and weather information including weather forecast values, which is displayed on the display unit of the terminal device by the display processing unit. They can also request the field water management device to perform management, including water supply and drainage treatment for the field, via the request processing unit.

[0017] The second characteristic configuration is that, in addition to the first characteristic configuration described above, the weather information includes accumulated temperature, the display processing unit is configured to allow setting the base date for the accumulated temperature via a setting screen displayed on the display unit, and the request processing unit transmits the base date for the accumulated temperature set via the setting screen to the field water management device.

[0018] By displaying the cumulative temperature for a specified period in each field, it becomes possible to understand the growth status of crops and make accurate judgments and predictions regarding heading time and harvesting time.

[0019] The third characteristic configuration is that, in addition to the first characteristic configuration described above, the display processing unit includes a water level display processing unit that displays the predicted water level of the field on the display unit based on the amount of water supplied by the water supply device and the amount of precipitation included in the weather information, and the request processing unit requests the field water management device to perform management including the water supply and drainage treatment set based on the predicted water level displayed on the display unit by the water level display processing unit.

[0020] By requiring the field water management system to perform management, including water supply and drainage treatment, based on predicted water levels that take rainfall into account, it becomes possible to manage water supply and drainage in the field to maintain an appropriate water level.

[0021] The fourth characteristic configuration is that, in addition to the first or third characteristic configuration described above, the display processing unit includes a water temperature display processing unit that displays the predicted water temperature of the field on the display unit based on the water temperature acquired by the water supply and drainage equipment and the air temperature included in the weather information, and the request processing unit requests the field water management device to perform management including the water supply and drainage treatment set based on the predicted water temperature displayed on the display unit by the water temperature display processing unit.

[0022] By requiring the field water management system to perform management, including water supply and drainage treatment, based on predicted water temperature that takes air temperature into account, it becomes possible to manage water supply and drainage in the field to maintain an appropriate water temperature.

[0023] The first characteristic configuration of the field water management method according to the present invention is a field water management method executed by a field water management device connected to a terminal device via an information communication network, which manages a field ID that uniquely identifies each field, field specific information linked to the field ID, water supply and drainage equipment specific information that identifies water supply and drainage equipment including water supply devices and drainage devices installed in each field, and field management information including the water supply and drainage status of each field, and remotely controls the water supply and drainage equipment, a weather information acquisition step of acquiring weather information including weather forecast values of the region where each field is located from a weather information providing device, and a weather information providing step of transmitting the weather information acquired in the weather information acquisition step to the terminal device. The field management step is to remotely control the water supply and drainage equipment according to the water supply and drainage request of the terminal device. The request is sent from the equipped request processing unit and operated by the manager of each field. in remotely controlling the water supply and drainage equipment according to the water supply and drainage request.

[0024] The second characteristic configuration of the field water management method according to the present invention is a field water management method executed by a terminal device connected to a field water management device via an information communication network, which acquires the water supply and drainage status by the water supply and drainage equipment installed in the field to be managed from the field water management device and weather information including weather forecast values of the region where the field is located, and a display processing step of displaying the water supply and drainage status and the weather information of the field in association with each other on a display unit, and a request processing step of requesting the field water management device to perform management including water supply and drainage processing for the field, which is input by an administrator.

Effects of the Invention

[0025] As described above, according to the present invention, it has become possible to provide a field water management device, a terminal device, and a field water management method capable of incorporating weather information into the management status of each field displayed on the terminal device.

Brief Description of the Drawings

[0026] [Figure 1] Explanatory drawing of a field water management system [Figure 2] Explanatory drawing of functional blocks of a field water management device, a terminal device, a weather information providing device, and water supply and drainage equipment [Figure 3]A flowchart explaining the operation of the field water management system. [Figure 4] Flowchart explaining the operation of the terminal device [Figure 5] (a) and (b) are explanatory diagrams of the display screen, including the login screen of the terminal device. [Figure 6] (a) and (b) are explanatory diagrams of the display screens, including the field list screen and field details screen of the terminal device. [Figure 7] ((a) and (b) are explanatory diagrams of one aspect of the weather information display screen of a terminal device.) [Figure 8] (a) and (b) are explanatory diagrams illustrating other aspects of the weather information display screen of the terminal device. [Figure 9] (a) and (b) are explanatory diagrams illustrating other aspects of the weather information display screen of the terminal device. [Figure 10] (a) and (b) are explanatory diagrams illustrating other aspects of the weather information display screen of the terminal device. [Figure 11] (a) and (b) are explanatory diagrams illustrating other aspects of the weather information display screen of the terminal device. [Figure 12] (a) and (b) are explanatory diagrams illustrating other aspects of the weather information display screen of the terminal device. [Figure 13] (a) and (b) are explanatory diagrams illustrating other aspects of the weather information display screen of the terminal device. [Best Mode for Carrying Out the Invention]

[0027] The field water management device, terminal device, and field water management method according to the present invention are described below. [Field water management system configuration] As shown in Figure 1, the field water management system 100 is a system in which a field water management server 40, which functions as a field water management device, terminal devices 50 owned by farmers who are the managers of each field, and water supply and drainage equipment are connected via the Internet 30, which is an example of an information and communication network. Note that the information and communication network is not limited to the Internet 30.

[0028] Each rice field 1 where rice cultivation takes place is equipped with water supply equipment such as a water supply device 12 that guides water flowing from the water supply pipe 10 to the field 1 via a water conduit 11, a drainage device 22 that drains water from the field 1 to the drainage channel 20 via a discharge channel 21, and a water temperature and water level meter 2 that measures the water temperature and water level of the field 1.

[0029] The water supply device 12 and the drainage device 22 are connected to the field water management server 40 via the Internet 30, or, if necessary, connected to the field water management server 40 via the Internet 30 through a wireless router 32 located near the field 1. The water temperature and water level measured by the water temperature and water level gauge 2 are transmitted to the field water management server 40 via the water supply device 12. Alternatively, the water temperature and water level gauge 2 may be configured to transmit to the field water management server 40 via the drainage device 22, or the water temperature and water level gauge 2 may be configured to communicate directly with the field water management server 40.

[0030] Preferably, a portable terminal device such as a smartphone or a tablet computer is used as the terminal device 50. However, a desktop or laptop computer may also be used as the terminal device 50.

[0031] To explain using rice cultivation as an example, it is necessary to adjust the water level in the reservoir of field 1 according to each stage of rice cultivation, such as puddling, transplanting, establishment, tillering (early and late stages), panicle formation to heading and flowering, and ripening. The field water management system 100 is used for this purpose.

[0032] The field water management server 40 is a computer system equipped with a CPU board and a memory board. Functional blocks are configured to perform the desired operations by executing predetermined application programs under the management of an OS installed in the memory mounted on the memory board. Specifically, the functional blocks consist of a field management unit 42, a weather information acquisition unit 44, a weather information provision unit 46, and a storage unit 48.

[0033] Furthermore, the memory provided in the terminal device 50 has an application program installed to realize a predetermined function as the terminal device 50. The terminal device 50 includes functional blocks such as a request processing unit 52 and a display processing unit 54, which are realized when the application program is executed by the CPU provided in the terminal device 50.

[0034] The request processing unit 52 is a functional block that transmits information entered by farmers and others to the field water management server 40, and the display processing unit 54 is a functional block that displays information transmitted from the field water management server 40 and information entered by farmers and others on the screen. The request processing unit 52 and the display processing unit 54 function as browsers that receive information transmitted from the field water management server 40, execute predetermined processing, and transmit necessary information to the field water management server 40.

[0035] The field management unit 42 is a functional block that manages field IDs that uniquely identify each field 1, field identification information linked to the field IDs, water supply and drainage equipment identification information that identifies water supply and drainage equipment including water supply devices 12 and drainage devices 22 installed in each field 1, and field management information including the water supply and drainage status of each field 1, as well as remotely controlling the water supply and drainage equipment.

[0036] Field identification information includes the latitude and longitude indicating the location of field 1, as well as the address and manager information of field 1. Information indicating the water supply and drainage status of field 1 includes the target water level, current water level, drainage water level, water temperature, and the opening degree of the water tap. Field management information is stored in a storage unit 48, which is a section of memory mounted on a memory board.

[0037] The weather information acquisition unit 44 is equipped with an API (Application Programming Interface) for using services provided by the weather information provision server 60, which is a commercial weather information provision device. The weather information acquisition unit 44 acquires weather information for the corresponding region based on the latitude and longitude indicating the location of each field included in the field management information and stores it in the storage unit 48. Note that the weather information acquired does not correspond to all managed latitudes and longitudes, but rather to representative latitudes and longitudes within a predetermined range.

[0038] Specifically, during the busy farming season from April to October, weather information is obtained six times a day (at 2, 6, 10, 14, 18, and 22 o'clock), and twice a day (at 6 and 18 o'clock) during the off-season from November to March, covering the period from the previous day to seven days in advance. The weather information includes hourly weather, temperature, humidity, wind direction and speed, precipitation, probability of precipitation, daily minimum temperature, maximum temperature, difference in minimum temperature from the previous day, difference in maximum temperature from the previous day, 6-hour probability of precipitation, 1-day probability of precipitation, representative values ​​of wind direction and speed, and sunshine duration.

[0039] The weather information provision unit 46 provides the terminal device 50 with the necessary weather information, associated with each field 1, from the weather information acquisition unit 44 obtained from the weather information provision server 60.

[0040] The request processing unit 52 in the terminal device 50 requests management, including water supply and drainage processing, for a predetermined field 1 identified by field identification information. For example, when controlling flooding, it sends a water supply request specifying a target water level. The field management unit 42 responds to this request by specifying the height of the drainage weir that will become the drainage water level to the drainage device 22 of the corresponding field and operating it, and outputs a water supply command to the water supply device 12. The water supply device 12 controls the opening and closing of the water taps based on the values ​​of the water temperature and water level gauge 2, and transmits the operating status of the water taps and the water temperature and water level of the field measured by the water temperature and water level gauge 2 to the field management unit 42.

[0041] The water supply device 12 includes a water tap 12A and a water supply control device 12B. The water supply control device 12B includes an actuator 120 that operates the water tap 12A, a water supply control unit 122 that controls the actuator 120, and a communication unit 124 that communicates with the field water management server 40. It also includes a battery 126 that supplies power to the motor of the actuator 120, the water supply control unit 122, the communication unit 124, etc., and a solar cell 228 that charges the battery 126.

[0042] The drainage system 22 comprises a drainage weir 22A and a drainage control device 22B. The drainage control device 22B includes an actuator 220 that raises and lowers the drainage weir 22A, a drainage water level control unit 222 that controls the actuator 220, and a communication unit 224 that communicates with the field water management server 40. It also includes a battery 226 that supplies power to the motor of the actuator 220, the drainage water level control unit 222, the communication unit 224, etc., and a solar cell 228 that charges the battery 226. Note that solar cells 128 and 228 are not essential.

[0043] Figure 3 shows a series of processes performed by the field water management server 40. At a predetermined time (SA1), the weather information acquisition unit 44 accesses the weather information provision server 60 to acquire the predetermined weather information and stores it in the storage unit 48 (SA2). When a login request is received from a pre-registered terminal device 50 (SA3), the field management information and necessary weather information are associated with and transmitted to the terminal device 50 (SA4).

[0044] When the operation screen of the terminal device 50 is operated and a processing request is made (SA5), the field management unit 42 executes the processing corresponding to the processing request. For example, if there is a water supply request, a water supply command is output to the water supply device 12 of the corresponding field 1, and when the management information of the corresponding field 1 is updated, the corresponding field management information is updated (SA6).

[0045] Furthermore, information such as drainage water level, measured water level, and measured water temperature is acquired from the water supply and drainage equipment installed in each field 1 (SA7), and the process from step SA1 is repeated. If there is any operation input in step SA5 that requires updating the display content of the terminal device 50, the necessary data for the display update is then transmitted in step SA4. Figure 3 shows the process for one terminal device 50, but in reality, the same process is performed for each terminal device 50 corresponding to the number of farmers.

[0046] Figure 4 shows the processing of the terminal device 50. When the field water management system application is launched and the login screen is displayed, and login information is entered (SB1), the field management unit 42 and the weather information provision unit 46 transmit management information and weather information for the field associated with the login information (SB2). The display processing unit 54 updates the screen to display the information corresponding to the acquired information (SB3), and when the farmer operates the screen (SB4), the request processing unit 52 sends a request for water supply and drainage, etc. corresponding to the operation to the field water management server 40 (SB6).

[0047] If an operation other than request processing is performed in step SB5, for example, an operation for switching screens (SB5,N), the details of that operation are sent to the field water management server 40, and in step SB2, the corresponding management information and weather information are sent, and the screen is updated (SB3). The processing from step SB2 to step SB7 is repeated until logoff.

[0048] Figures 5 to 12 show the screens that are processed and displayed on the display unit of the terminal device 50 by the display processing unit 54. The following will explain them in order. Reveal Please note that the screen displays described below are examples for ease of understanding, and the specific numerical values ​​and other displayed content may not be accurate to reality.

[0049] Figure 5(a) shows the login screen. After entering the username and password and logging in, the initial screen shown in Figure 5(b) is displayed. The initial screen is a field list screen that lists the fields managed by the farmer. In this example, three fields, Field 1, Field 2, and Field 3, are managed, and the water level, water temperature, water tap status, and drainage height (target height of the drainage weir) for each field are displayed. The farmer can understand the status of each field from the field list screen.

[0050] When the "Field 1" display area, indicated by a thick line, is touched on the field list screen shown in Figure 6(a), the screen switches to the field details screen shown in Figure 6(b), where detailed information about Field 1 is displayed. In this example, the values ​​of the water level and temperature gauges, the number of water supply devices, and their status are shown. When the "Field List" display area, indicated by a thick line, is touched, the screen switches to the field list screen shown in Figure 6(a). The content displayed on each screen is based on field management information transmitted from the field water management server 40.

[0051] Furthermore, touching the "Field Control" display area shown in Figure 6(b) displays an operation screen for remotely controlling water supply, drainage, and water level settings for the corresponding field at intervals of several minutes to several tens of minutes. Following the operation on the screen, the field water management server 40 remotely controls the water supply and drainage equipment of the corresponding field in virtually real time. Additionally, touching the "Schedule Setting" display area displays an operation screen for setting schedules for water supply and drainage for the corresponding field on the field water management server 40, and touching the "Field Settings / Equipment Settings" display area displays an operation screen for setting information such as the specifications of equipment installed in the corresponding field on the field water management server 40.

[0052] When the "weather mark" area, which is a sun-like image shown with a thick line, is touched on the field list screen shown in Figure 7(a), the screen switches to the weather information screen shown in Figure 7(b), where the "Today's / Tomorrow's Weather" section is displayed, showing the weather, temperature, humidity, precipitation, probability of precipitation, and wind direction for the area where the field is located, every three hours for the current day and the following day.

[0053] When the "Hourly Weather" display area, indicated by a thick line, is touched on the "Today's / Tomorrow's Weather" screen shown in Figure 8(a), the "Hourly Weather" screen, as shown in Figure 8(b), is displayed, showing a list of hourly weather, temperature, humidity, precipitation, probability of precipitation, and wind direction. By scrolling the screen, the entire list for today and tomorrow can be viewed.

[0054] When the "Weekly Weather" display area, indicated by a thick line, is touched from the "Hourly Weather" screen shown in Figure 9(a), the weather, maximum and minimum temperatures, and wind direction for the seven days of the week are displayed in a list, as shown in Figure 9(b).

[0055] When the "weather mark" area, which is a sun-like image shown with a thick line, is touched on the field details screen shown in Figure 10(a), the screen switches to the weather information screen shown in Figure 10(b), where a list of "Today's / Tomorrow's Weather" is displayed, showing the weather, temperature, humidity, precipitation, probability of precipitation, and wind direction every three hours for the current day and the following day in the area where the field is located. This display content is essentially the same as that shown in Figure 7(b).

[0056] When the "Graph Display" area, indicated by a thick line in the lower right corner of the field details screen shown in Figure 11(a), is touched, the screen switches to the one shown in Figure 11(b), displaying graphs showing the water level, water temperature, air temperature, and precipitation for the field selected on the field details screen. The "Display Range" displayed at the top of the screen allows selection of "1h," "1d," "3d," "1w," and "All," and graphs showing water level, water temperature, air temperature, and precipitation for every hour, every day, every three days, every week, or for the entire period are displayed.

[0057] In the "Water Level" display area of ​​Figure 11(b), the water level in the field is shown as a solid line with water level on the vertical axis and time on the horizontal axis, while the height of the drainage weir is shown as a dashed line. The two horizontal lines indicate the upper and lower limits of the target water level, and the diagram shows how the water tap is controlled to keep the water level within these limits. After the height of the drainage weir is set to the drainage water level, the decrease in water level can be observed.

[0058] In the "Water Temperature / Air Temperature" display area of ​​Figure 11(b), the water level detected by the water temperature / water level gauge 2 (shown by a dashed line) and the air temperature included in the weather information are combined and displayed. In the "Precipitation" display area of ​​Figure 11(b), the water tap opening degree (shown by a solid line) and the precipitation amount included in the weather information are combined and displayed.

[0059] As shown in Figure 11(b), where the water level (water temperature, air temperature, water supply opening, precipitation) is displayed at the top of the weather information screen, the "water level" display area is the main graph, and the graphs for water temperature, air temperature, water supply opening, and precipitation are sub-graphs.

[0060] On this screen, touching the water temperature / air temperature area will display the water temperature and air temperature as the main graph at the top, as shown in Figure 12(a), with sub-graphs for water supply opening and precipitation below it.

[0061] In Figure 12(a), precipitation is displayed as a bar graph, but it may also be displayed as a line graph showing the cumulative value based on hourly precipitation data obtained from the weather information server 60. Figure 12(b) shows how precipitation is displayed as a dashed line graph when "1h" is selected in the "Display Range" displayed at the top of the screen.

[0062] If you swipe the field list screen shown in Figure 13(a) to the right, for example, the accumulated temperature display processing unit in the display processing unit 54 will switch to the accumulated temperature display screen, which shows the accumulated temperature for a predetermined period for each field, in this example, from May 1, 2020 to yesterday (July 2 today), via the accumulated temperature display processing unit. If you swipe the screen displaying the accumulated temperature to the left, for example, the screen will switch back to the original field list screen. Note that switching between the field list screen and the accumulated temperature display screen is not limited to swiping; you can also switch by displaying a switch icon on the field list screen and touching that icon.

[0063] Accumulated temperature refers to the sum of the average daily temperatures over a certain period, and is used as an indicator of whether or not there is sufficient heat for crop growth. The accumulated temperature display processing unit displays the accumulated temperature for a predetermined period in each field, allowing for an understanding of the crop's growth status and enabling decisions and predictions regarding heading time, harvesting time, and other factors.

[0064] The temperature used in calculating the accumulated temperature may be the daily average temperature obtained as meteorological information, or it may be the sum of only the values ​​that exceed a certain threshold.

[0065] Furthermore, the base point for the accumulated temperature may be configured to be set as appropriate. For example, a screen for inputting the base date for displaying the accumulated temperature may be displayed on the display screen of the terminal device 50. These settings are sent to the field water management server 40 via the request processing unit 52, and the field water management server 40 sends the corresponding information to the terminal device 50. By inputting the base date, the accumulated temperature obtained by setting the transplanting date as the base date is initially used to predict the heading date, and after heading, the accumulated temperature obtained by setting the heading date as the base date can be used to determine the harvesting time.

[0066] In this way, the field water management server 40 can acquire weather information for the area where the field is located from the weather information provision server 60 via the weather information acquisition unit 44, and provide the necessary weather information to each terminal device 50 via the weather information provision unit 46. The terminal device 50 will then display the management status of a predetermined field acquired from the field water management server 40 in association with the weather information. The weather information will include at least precipitation and temperature.

[0067] By visually checking the display screen of the terminal device 50, farmers can appropriately determine the necessary tasks based on, for example, the current condition of each field and weather information such as temperature and precipitation.

[0068] The water level display processing unit in the display processing unit 54 displays a time-series graph, as shown in Figure 11(b), which associates weather information with the field water level information for each field. This makes it possible to accurately predict fluctuations in field water levels, and for example, to make an appropriate decision on whether or not to supply water.

[0069] The water temperature display processing unit in the display processing unit 52 displays a time-series graph, as shown in Figures 12(a) and (b), which associates weather information with the water temperature information of each field. This makes it possible to appropriately predict fluctuations in the water temperature of the fields, and to appropriately determine, for example, whether or not water supply such as continuous flow is necessary.

[0070] It becomes possible to predict fluctuations in field water levels based on precipitation, and to predict fluctuations in field water temperature based on air temperature.

[0071] Preferably, the display processing unit 54 has a function to display the predicted water level for each field based on the amount of water supplied by the water supply device and the amount of precipitation included in the weather information, and appropriate water supply management can be performed based on the predicted water level for each field displayed on the display screen of the terminal device.

[0072] Preferably, the display processing unit 54 has a function to display the predicted water temperature for each field based on the water temperature acquired by the water supply and drainage equipment and the air temperature included in the weather information. Based on the predicted water temperature for each field displayed on the display screen of the terminal device, appropriate water supply management can be performed so that the water temperature reaches a desirable value.

[0073] The embodiments described above represent only one embodiment of the present invention, and it is not intended that this description limits the technical scope of the present invention. It goes without saying that the specific configuration of each part can be appropriately modified and designed within the scope that achieves the effects of the present invention. [Explanation of Symbols]

[0074] 1: Field 2:Water temperature water level gauge 10: Water supply pipe 12: Water supply device 12A: Water tap 12B: Water supply control device 20:Drainage channel 22: Drainage device 22A: Drainage weir 22B: Drainage control device 40: Field water management server (field water management device) 42: Field Management Department 44: Weather Information Acquisition Department 46: Weather Information Provision Department 48: Storage section 50: Mobile devices (terminal devices) 52: Request Processing Unit 54: Display Processing Unit 100: Field water management system

Claims

1. A field water management device connected to a terminal device via an information and communication network, A field management unit manages field IDs that uniquely identify each field, field identification information linked to the field IDs, water supply and drainage equipment identification information that identifies water supply and drainage equipment installed in each field, and field management information including the water supply and drainage status of each field, and remotely controls the water supply and drainage equipment. A weather information acquisition unit that acquires weather information, including weather forecast values ​​for the area where each field is located, from a weather information provision device, A weather information provision unit transmits the weather information acquired by the weather information acquisition unit to the terminal device, Equipped with, The field management unit is a field water management device that remotely controls the water supply and drainage equipment in accordance with water supply and drainage requests transmitted from the request processing unit provided in the terminal device and operated by the manager of each field.

2. The field water management device according to claim 1, wherein the weather information provision unit transmits to the terminal device the accumulated temperature calculated based on the average temperature included in the weather forecast value, with reference to a base date specified by the terminal device.

3. A terminal device connected to a field water management system that remotely controls water supply and drainage equipment, including water supply and drainage equipment, in each field via an information and communication network, A display processing unit that obtains from the field water management device the water supply and drainage status of the water supply and drainage equipment installed in the field to be managed, and weather information including weather forecast values ​​for the area where the field is located, and displays the water supply and drainage status of the field and the weather information in association with each other on the display unit. A request processing unit that requests the field water management device to perform management including water supply and drainage treatment for the field, A terminal device equipped with the following features.

4. The weather information includes accumulated temperature, and the display processing unit is configured to allow setting the base date for the accumulated temperature via a setting screen displayed on the display unit. The terminal device according to claim 3, wherein the request processing unit transmits the base date of the accumulated temperature set via the setting screen to the field water management device.

5. The display processing unit includes a water level display processing unit that displays the predicted water level of the field on the display unit based on the amount of water supplied by the water supply device and the amount of precipitation included in the weather information. The terminal device according to claim 3, wherein the request processing unit requests the field water management device to perform management including the water supply and drainage treatment set based on the predicted water level displayed on the display unit by the water level display processing unit.

6. The display processing unit includes a water temperature display processing unit that displays the predicted water temperature of the field on the display unit based on the water temperature obtained by the water supply and drainage equipment and the air temperature included in the weather information. The terminal device according to claim 3 or 5, wherein the request processing unit requests the field water management device to perform management including the water supply and drainage treatment set based on the predicted water temperature displayed on the display unit by the water temperature display processing unit.

7. A field water management method performed by a field water management device connected to a terminal device via an information and communication network, A field management step that manages field IDs that uniquely identify each field, field identification information linked to the field IDs, water supply and drainage equipment identification information that identifies water supply and drainage equipment installed in each field, and field management information including the water supply and drainage status of each field, as well as remotely controlling the water supply and drainage equipment, A weather information acquisition step involves obtaining weather information, including weather forecast values ​​for the area where each field is located, from a weather information providing device. A weather information provision step which transmits the weather information acquired in the weather information acquisition step to the terminal device, Equipped with, The field management step is a field water management method that remotely controls water supply and drainage equipment according to water supply and drainage requests transmitted from a request processing unit provided in the terminal device and operated by the manager of each field.

8. A field water management method performed by a terminal device connected to a field water management device via an information and communication network, A display processing step involves obtaining from the field water management device the water supply and drainage status of the water supply and drainage equipment installed in the field to be managed, and weather information including weather forecast values ​​for the area where the field is located, and displaying the water supply and drainage status of the field and the weather information in association with each other on the display unit. A request processing step is entered by the administrator and requests the field water management device to perform management including water supply and drainage treatment for the field, A field water management method that implements the following.

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