JP2021031913A - Agricultural drainage device and control method thereof - Google Patents

Abstract

To provide an agricultural drainage device that can reduce malfunctions caused by a partition being solidified by cultivated soil.SOLUTION: An agricultural drainage device includes a drainage unit having a partition whose drainage height can be set by moving the partition up and down, and an electric actuator for moving the partition up and down. In addition to an operation of moving the partition based on a change of a drainage height setting (S7), an actuator control unit intermittently causes the electric actuator to perform displacement operations (S11, S13) for moving the partition from a set position and returning it to the set position.SELECTED DRAWING: Figure 6

Description

The present invention relates to an agricultural drainage device and a control method thereof, and more particularly to, for example, an agricultural drainage device for controlling drainage from a field and a control method thereof.

Patent Document 1 discloses an example of a field water management system (water supply / drainage system) including a conventional agricultural drainage device. In the technique of Patent Document 1, by attaching an electric actuator for driving these movable parts to each of the water supply valve and the drainage part (waterfall port), it is possible to perform water management in the field by remote control or automatic control. There is.

JP-A-2017-193914

In the water management of paddy rice, the water level in the field is kept at a desired height mainly by controlling the amount of water supplied from the water supply valve, so that the drainage section is operated infrequently. For this reason, there is a problem that the partition body, which is a movable part of the drainage part, is hardened by the cultivated soil, and the agricultural drainage device is liable to malfunction.

Therefore, the main object of the present invention is to provide a novel agricultural drainage system and its control method.

Another object of the present invention is to provide an agricultural drainage device and a method for controlling the same, which can reduce malfunctions caused by the partition being solidified by cultivated soil.

The first invention is an agricultural drainage device that controls drainage from a field, and includes a drainage unit having a partition body whose drainage height can be set by moving up and down, and a drive mechanism for moving the partition body up and down. It includes an electric actuator and an actuator control unit that controls the operation of the electric actuator, and the actuator control unit sets the drainage height when the partition is fixed at a predetermined set position based on the designation of the drainage height. This is an agricultural drainage device that intermittently causes an electric actuator to perform a displacement operation of moving the partition body from a set position and returning it to the set position, in addition to the operation of moving the partition body based on the change.

In the first invention, the agricultural drainage device is a device for controlling drainage from a field, and has a drainage portion such as a waterfall port provided with a partition body whose drainage height can be set, and a drive for moving the partition body up and down. It includes an electric actuator with a mechanism. The actuator control unit that controls the operation of the electric actuator, apart from the operation of moving the partition body based on the setting change of the drainage height, intermittently, for example, once a day, every time the set time comes. The electric actuator is made to perform a displacement operation of moving the partition body from the set position and returning it to the set position.

According to the first invention, since the displacement operation of moving the partition body and returning it to the original position is intermittently executed, it is possible to reduce the malfunction of the agricultural drainage device due to the partition body being solidified by the cultivated soil. ..

The second invention is subordinate to the first invention, and when the actuator control unit causes the electric actuator to perform a displacement operation, the electric actuator causes the partition body to move up and down over the entire movable range of the partition body. To control.

According to the second invention, since the partition body is moved up and down over the entire range of motion, it is possible to more preferably prevent the partition body from being solidified by the cultivated soil.

The third invention is subordinate to the first invention, and when the actuator control unit executes the displacement operation of the electric actuator, the partition body is moved only upward from the set position and then returned to the set position. Control the electric actuator.

According to the third invention, since the partition body is displaced above the set position, it is possible to prevent the partition body from being solidified by the cultivated soil while preventing the outflow of the irrigation water stored in the field.

The fourth invention is subordinate to the first invention, and when the actuator control unit executes the displacement operation of the electric actuator, the partition body is moved from the set position to a predetermined range up and down, and then returned to the set position. The electric actuator is controlled so as to.

According to the fourth invention, since the partition body is moved only to a predetermined range above and below from the set position, it is possible to prevent the partition body from being solidified by the cultivated soil while suppressing the outflow of the irrigation water stored in the field.

A fifth invention is a control method for an agricultural drainage device including a drainage unit having a partition body whose drainage height can be set by moving the partition body up and down, and an electric actuator provided with a drive mechanism for moving the partition body up and down. When the partition body is fixed at a predetermined set position based on the designation of the drainage height, the partition body is intermittently moved separately from the operation of moving the partition body based on the change of the drainage height setting. This is a control method for an agricultural drainage device in which the electric actuator is made to perform a displacement operation of moving a body from a set position and returning the body to the set position.

According to the fifth invention, the same operation and effect as that of the first invention can be obtained, and the malfunction of the agricultural drainage device due to the partition body being solidified by the cultivated soil can be reduced.

According to the present invention, since the displacement operation of moving the partition body and returning it to the original state is intermittently executed, it is possible to reduce the malfunction of the agricultural drainage device due to the partition body being solidified by the cultivated soil.

The above-mentioned object, other object, feature and advantage of the present invention will become more apparent from the detailed description of the examples described below with reference to the drawings.

It is a schematic diagram which shows the field water management system using the agricultural drainage device which is one Example of this invention. It is a schematic diagram which shows the internal structure of the agricultural drainage system. It is a schematic diagram which shows the internal structure of the electric actuator provided in the agricultural drainage device. It is a schematic diagram which shows the adapter which the agricultural drainage system has. It is a block diagram which shows the electric structure of an electric actuator. It is a flow chart which shows an example of the movement control processing of a partition body executed in an agricultural drainage device.

With reference to FIG. 1, the agricultural drainage device 10 (hereinafter, simply referred to as “drainage device 10”) according to an embodiment of the present invention is a device for controlling drainage from the field 102, and is a waterfall port. The drainage unit 12 and the like, and an electric actuator 14 attached to the drainage unit 12 are provided. In this embodiment, the drainage device 10 is combined with the agricultural water supply device 20 (hereinafter, simply referred to as “water supply device 20”) that controls the water supply to the field 102, and the field water management system 100 (hereinafter, simply “system 100”). ”).

First, the system 100 will be briefly described before the specific description of the drainage device 10. As shown in FIG. 1, the system 100 includes a drainage device 10 and a water supply device 20. The system 100 uses the electric actuators 14 and 24 provided in the drainage device 10 and the water supply device 20, respectively, to perform water management (water supply / drainage) of the field 102 by remote control or automatic control based on a program stored in advance.

The water supply device 20 is a device for controlling water supply to the field 102, and includes a water supply plug (water supply valve) 22 and an electric actuator 24. In this embodiment, as the water faucet 22, a water faucet of a type in which the valve shaft and the valve body move up and down with the rotation of the valve shaft, which is widely used in general, is used. Further, as the electric actuator 24, one having the same configuration as the electric actuator 14 provided in the drainage device 10 described later is used. The water tap 22 is arranged, for example, in the water supply basin 104, and is attached to the downstream end of the branch pipe 108 that branches from the water pipeline 106 and extends into the field 102. An electric actuator 24 is mounted on the water tap 22, and the movable portion (valve shaft and valve body) of the water tap 22 is moved up and down by the electric actuator 24.

On the other hand, the drainage device 10 is a device for controlling drainage from the field 102, and includes a drainage unit 12 and an electric actuator 14. In this embodiment, a water outlet having a water level setting function is used as the drainage unit 12. The drainage portion 12 is arranged in, for example, the drainage basin 110, and is attached to the upstream end portion of the drainage pipe 114 extending to the drainage channel 112. An electric actuator 14 is attached to the drainage unit 12 via an adapter 16 described later, and the partition body 32 of the drainage unit 12 is moved up and down by the electric actuator 14. The specific configuration of the drainage device 10 including the drainage unit 12 and the electric actuator 14 will be described later.

Although not shown, the field 102 includes a water level sensor such as an ultrasonic sensor for detecting the field water level, a temperature sensor for detecting the temperature, a pressure sensor for detecting the pressure, a soil moisture sensor for detecting the soil moisture, and the like. Sensor 68 (see FIG. 5) is appropriately provided. Each sensor 68 is connected to the electric actuators 14, 24 via wiring or the like, and sensor information such as the field water level and the air temperature detected by each sensor 68 is input to the control unit of the electric actuators 14, 24. However, it is not necessary to connect the same type of sensors to all the electric actuators 14, 24, and the type and number of sensors to be connected may differ depending on the electric actuators 14, 24, and the drainage device 10 and It is also possible to connect the sensor only to the electric actuators 14 and 24 included in any one of the water supply devices 20.

Further, in this embodiment, the system 100 is a system including a plurality of cultivated areas. The electric actuators 14 and 24 attached to the drainage device 10 and the water supply device 20 installed in each cultivated area are wirelessly connected to the repeater 120 by a wireless communication method according to the specified low power wireless standard. Then, the electric actuators 14 and 24 are wirelessly connected to the remote control terminals such as smartphones, tablet terminals, PDAs and PCs owned by the user via the repeater 120 and a network such as the Internet. ..

In this wireless communication, cloud computing may be used. For example, information acquired by each of the electric actuators 14 and 24 (information on the states of the drainage device 10 and the water supply device 20 such as the set position of the partition body 32 and the opening degree of the valve body, and sensors such as the water level and air temperature of the field 102. Information etc.) is sent to the cloud server at any time and stored. The user confirms the information acquired by the electric actuators 14 and 24 by accessing the cloud server from the remote control terminal, and remotely controls the electric actuators 14 and 24 using the remote control terminal in the field. 102 water management can be performed.

Hereinafter, the configurations of the drainage unit 12 and the electric actuator 14 included in the drainage device 10 will be described. As described above, the electric actuator 24 included in the water supply device 20 has the same configuration as the electric actuator 14.

As shown in FIGS. 1 and 2, the drainage portion 12 is a short cylindrical rubber receiving frame member 30, and a cylindrical partition that is fitted into the receiving frame member 30 and is supported by the receiving frame member 30 so as to be vertically movable. It includes a body (weir body) 32. The upper end opening of the partition 32 functions as a drainage port. Then, when a force is applied to the partition body 32 in the vertical direction (axial direction), the partition body 32 moves up and down, and the drain port is adjusted to an arbitrary height. That is, the drainage unit 12 includes a partition body 32 whose drainage height can be set by moving up and down.

As shown in FIGS. 2 and 3, the electric actuator 14 is a device for moving the partition body 32 of the drainage unit 12 up and down, and includes a cylindrical main body case 40. The size, shape, material, etc. of the main body case 40 are not particularly limited as long as they can accommodate the internal mechanism described later, but in this embodiment, a short tube and a tube made of hard polyvinyl chloride having a nominal diameter of 150 mm. The main body case 40 is formed by combining the joints.

The solar cell panel 42 is detachably mounted on the main body case 40. The solar cell panel 42 is supported by a bending plate-shaped holding body 44 at a predetermined angle.

A drive mechanism including an electronic board 46, an antenna 48, a storage battery 50, a motor 52, a main gear 54, and the like is housed inside the main body case 40. The electronic board 46 is provided with a control unit 64 including a CPU 90, a memory 92, and the like, and a wireless communication unit 66 (see FIG. 5) for wirelessly communicating with other devices.

The storage battery 50 stores the electric power generated by the solar cell panel 42. The motor 52 is driven by the electric power stored in the storage battery 50. A small gear 56 is provided at the tip of the output shaft 52a of the motor 52, and the main gear 54 is connected to the small gear 56 to receive a driving force from the motor 52 and rotate around the axis. Rotate.

In this embodiment, a motor with an encoder is used as the motor 52. The encoder of the motor 52 outputs a pulse signal corresponding to the rotation direction and the rotation speed of the output shaft 52a to the control unit 64 (CPU 90). The control unit 64 calculates the position of the partition 32 of the drainage device 10 based on the pulse signal input from the encoder, that is, the rotation direction and the rotation speed of the output shaft 52a. That is, the encoder is used as a position detection unit that detects the position of the partition body 32. However, the encoder that functions as the position detection unit does not necessarily have to be provided in the motor 52, and the encoder is provided in the main gear 54 to calculate the position of the partition body 32 based on the rotation direction and the rotation speed of the main gear 54. You can also do it.

The main gear 54 is a double-boss type gear, and a substantially cylindrical rotating shaft 58 is inserted through the shaft portion of the main gear 54. A coupling portion 58a connected to the upper end portion of the connecting shaft 74 of the adapter 16 is formed at the lower end portion of the rotating shaft 58. A key groove 54a extending along the axial direction is formed on the inner peripheral surface of the shaft portion of the main gear 54, and a sliding key 58b fitted with the key groove 54a is a shaft on the outer peripheral surface of the rotating shaft 58. It is formed so as to extend along the direction. As a result, the rotating shaft 58 rotates as the main gear 54 rotates, and is slidable in the axial direction with respect to the shaft portion of the main gear 54.

Further, an operation panel 60 for manually driving the motor 52 is provided on the outer surface of the main body case 40 (electrically manually). The operation panel 60 is appropriately provided with operation buttons such as a power button, an ascending button, and a descending button, and a selection button for switching an operation mode (remote mode, automatic mode, manual mode, etc.) of the electric actuator 14. The operation panel 60 is also provided with a connection terminal for connecting the wiring extending from each sensor 68. Further, at the lower end of the main body case 40, an inspection port 62 for checking the operation of the rotating shaft 58 and performing maintenance work such as cleaning is formed.

When the electric actuator 14 is attached to the drainage portion 12, the adapter 16 is used. As described above, the partition body 32 of the drainage portion 12 is only provided so as to be movable up and down, and itself does not move up and down even if it receives a rotational force. Therefore, it is necessary to convert the rotational force of the rotating shaft 58 of the electric actuator 14 into a force in the vertical direction (axial direction) and transmit it to the partition body 32. Therefore, a movable portion 76 that moves up and down by a screw mechanism is provided on the adapter 16 so that the rotating shaft 58 and the partition body 32 are connected via the movable portion 76.

Specifically, as shown in FIGS. 2 and 4, the adapter 16 includes a flat plate-shaped pedestal 70 for mounting the electric actuator 14 on the drainage basin 110. An insertion hole is formed in the central portion of the pedestal 70, and a cylindrical holding portion 72 is provided in the insertion hole. The upper part of the connecting shaft 74 connected to the rotating shaft 58 of the electric actuator 14 is rotatably inserted into the holding portion 72. A male screw is formed on the outer peripheral surface of the lower portion 74a of the connecting shaft 74, and a cylindrical movable portion 76 having a female screw formed on the inner peripheral surface is screwed onto the lower portion 74a of the connecting shaft 74. .. The movable portion 76 is provided with a fixing portion 78 for connecting and fixing the partition body 32 to the movable portion 76. Further, a rod-shaped detent portion 80 for preventing the movable portion 76 from rotating (rotating) together with the connecting shaft 74 is provided so as to connect the fixed portion 78 and the pedestal 70. In such an adapter 16, when a rotational force around the axis is applied to the connecting shaft 74, the movable portion 76 and the fixed portion 78 move up and down by the feed screw mechanism.

When the electric actuator 14 is attached to the drainage portion 12 by using the adapter 16, the pedestal 70 is attached to the upper end portion of the drainage basin 110, and the end portion of the fixing portion 78 is bolted to the partition body 32. Further, the electric actuator 14 is placed on the pedestal 70 to bolt the pedestal 70 and the bottom wall of the main body case 40, and the upper end portion of the connecting shaft 74 cannot be rotated with respect to the coupling portion 58a of the rotating shaft 58. Connect to.

FIG. 5 is a block diagram showing an electrical configuration of the electric actuator 14. The electric actuator 14 includes a control unit (actuator control unit) 64 including a CPU 90 and a memory 92. In addition to the memory 92, a motor 52, an operation panel 60, a wireless communication unit 66, a sensor 68, an RTC 94, and the like are connected to the CPU 90.

The CPU 90, also called a processor, controls the entire electric actuator 14 (and thus the drainage device 10). The memory 92 comprehensively shows the ROM, RAM, HDD, and the like, stores a control program that controls the operation of the electric actuator 14, and functions as a work area when the CPU 90 operates.

The control program stored in the memory 92 includes a communication program for transmitting and receiving data and commands to and from an external device, a position calculation program for calculating the position of the partition 32 based on an input signal from the encoder, and a motor. A movement control program or the like that drives and controls the 52 to move the partition 32 up and down to a desired position is included. Further, the memory 92 stores data such as position data of the partition body 32 necessary for executing the control program, and is provided with a timer (counter) and a flag necessary for executing the control program.

The operation panel 60 is a user interface that accepts manual (electric manual) operations, and includes a power button, an operation button for moving the partition 32 up and down, a selection button for switching an operation mode, and the like. The wireless communication unit 66 wirelessly communicates with the repeater 120 via the antenna 48, and wirelessly communicates with an external device such as a cloud server and a remote control terminal owned by the user via the repeater 120. The sensor 68 is a general term for sensors that measure the field environment, and includes a water level sensor, a temperature sensor, a pressure sensor, a soil moisture sensor, and the like. The RTC (real-time clock) 94 is a clock circuit that counts time (including the calendar, month, day, and time (hour, minute, second)). In RTC94, the day of the week can also be known by the calendar function.

In such a drainage device 10, for example, an operation instruction for a user to access a cloud server using a remote control terminal and change the drainage height (height position of the upper end opening of the partition 32) in the drainage unit 12. Is transmitted, a control signal corresponding to this operation instruction is transmitted from the cloud server to the electric actuator 14. The CPU 90 of the electric actuator 14 drives the motor 52 in response to the received control signal. The driving force of the motor 52 is transmitted to the main gear 54, and the main gear 54 and the rotating shaft 58 rotate. As a result, a rotational force is applied to the connecting shaft 74 of the adapter 16 which is fixedly connected to the rotating shaft 58. When a rotational force around the axis is applied to the connecting shaft 74, the movable portion 76 moves up and down by the feed screw mechanism between the connecting shaft 74 and the movable portion 76, and accordingly, the partition connected and fixed to the movable portion 76. The body 32 is moved to a predetermined height position.

Similarly, in the water supply device 20, when the user transmits an operation instruction using the remote control terminal, the CPU of the electric actuator 24 drives and controls the motor in response to the operation instruction, and the valve body of the water tap 22 is fully opened. Move to a position or a fully closed position.

By introducing the system 100 including the drainage device 10 and the water supply device 20 as described above into the field 102, the labor required for water management in the field 102 can be significantly reduced. However, in the water management of paddy rice, the frequency of operating the drainage unit 12 of the drainage device 10 is lower than that of the water tap 22 of the water supply device 20. For this reason, there is a problem that the partition body 32 is fixed (or becomes difficult to move) due to the solidification of the cultivated soil that has entered between the receiving frame member 30 and the partition body 32, and the drainage device 10 malfunctions. ..

Therefore, in this embodiment, when the partition body 32 is fixed at a predetermined set position based on the designation of the drainage height, the partition body 32 is moved separately based on the change in the drainage height setting. , Intermittently, the electric actuator 14 is made to perform a displacement operation of moving the partition body 32 from the set position and returning it to the set position.

Specifically, the time (date and time) for moving the partition body 32 up and down, which is preset by the user (or system administrator) as "18:00 every day", is stored in the memory 92 or the like, and the set time is stored. Each time the partition body 32 is moved, the electric actuator 14 is operated so that the partition body 32 moves up and down over the entire movable range of the partition body 32. That is, after moving the partition body 32 from the set position to the upper limit position (or lower limit position), the partition body 32 is moved to the lower limit position (or upper limit position), and then returned to the set position. By intermittently moving the partition body 32 up and down over the entire range of motion of the partition body 32 in this way, it is appropriately prevented that the cultivated soil that has entered between the receiving frame member 30 and the partition body 32 is solidified. Will be done.

The frequency of moving the partition 32 up and down is not particularly limited, and may be set to "every Monday at 9:00" or "every Monday at 18:00", but the partition 32 may be set depending on the cultivated soil. In order to prevent the partition 32 from solidifying, it is preferable to move the partition 32 up and down once a day.

Such an operation in the drainage device 10 is realized by the CPU 90 of the electric actuator 14 executing a control program stored in the memory 92. FIG. 6 is a flow chart showing an example of the movement control process of the partition body 32 by the CPU 90.

As shown in FIG. 6, when this movement control process is started, the CPU 90 of the electric actuator 14 first fixes the partition body 32 at the set position in step S1 based on the designation of the drainage height. For example, when the user transmits an operation instruction to set the drainage height of the drainage unit 12 to 15 cm to the cloud server, a control signal is transmitted to the electric actuator 14 of the drainage device 10. When the wireless communication unit 66 receives the control signal from the cloud server, the CPU 90 drives and controls the motor 52 based on the control signal, and the height position of the upper end opening of the partition body 32 is 15 cm from the ground surface of the field 102. The partition body 32 is moved to a certain position, and the partition body 32 is stopped at this position. In the next step S3, the set position of the partition body 32 is stored in the memory 92 or the like, and the process proceeds to step S5.

In step S5, it is determined whether or not there is a change in the drainage height setting. That is, it is determined whether or not a control signal for changing the drainage height of the drainage unit 12 is received from the cloud server. If it is "N0" in step S5, that is, if there is no change in the drainage height setting, the process proceeds to step S11. On the other hand, if "YES" in step S5, that is, if there is a change in the drainage height setting, the process proceeds to step S7. In step S7, the partition body 32 is moved based on the change in the drainage height setting. For example, when the wireless communication unit 66 receives a control signal indicating that the drainage height is 10 cm, the CPU 90 drives and controls the motor 52 to move the partition 32 to that position and stop it. In the next step S9, the changed setting position of the partition body 32 is stored in the memory 92 or the like, and the process proceeds to step S11.

In step S11, it is determined whether or not the set time has been reached. That is, the CPU 90 refers to the RTC 94 or the like to determine whether or not the set time stored in the memory 92 or the like (for example, 18:00) has been reached. If it is "N0" in step S11, that is, if the set time has not been reached, the process proceeds to step S15. On the other hand, when "YES" in step S11, that is, when the set time is reached, the process proceeds to step S13.

In step S13, the displacement operation of the partition body 32 is executed. That is, the CPU 90 transmits a control signal to the motor 52 to drive and control the motor 52, move the partition body 32 from the set position to the upper limit position, move it to the lower limit position, and then return it to the set position. When the process of step S13 is completed, the process proceeds to step S15.

In step S15, it is determined whether or not to end this movement control process. For example, the CPU 90 determines that the movement control process is terminated when the setting is changed to a mode in which the displacement operation for preventing solidification of the partition body 32 is not used. When "N0" is set in step S15, that is, when the movement control process is not completed, the process returns to step S5. On the other hand, when "YES" in step S15, this movement control process is terminated.

As described above, according to this embodiment, apart from the operation of moving the partition body 32 based on the setting change of the drainage height, the displacement operation of moving the partition body 32 from the set position and returning it to the set position is electrically performed. Since the actuator 14 is made to execute intermittently, it is possible to prevent the cultivated soil that has entered between the receiving frame member 30 and the partition 32 from solidifying. Therefore, it is possible to reduce the malfunction of the drainage device 10 due to the partition body 32 being solidified by the cultivated soil.

Further, according to this embodiment, when the partition body 32 is displaced, the partition body 32 is moved up and down over the entire range of motion of the partition body 32, so that the cultivated soil is cultivated over the entire range of motion of the partition body 32. It is possible to more preferably reduce the malfunction of the drainage device 10 due to the partition body 32 being solidified by the cultivated soil.

In the above-described embodiment, when the electric actuator 14 is made to perform the displacement operation of the partition body 32, the electric actuator 14 is controlled so as to move the partition body 32 up and down over the entire range of motion of the partition body 32. However, the specific mode of the displacement operation of the partition body can be changed as appropriate.

For example, when the electric actuator 14 is made to perform the displacement operation of the partition body 32, the partition body 32 is moved only upward from the set position (for example, to the upper limit position or the vicinity of the upper limit position), and then returned to the set position. The electric actuator 14 can also be controlled. When the partition body 32 is moved to the lower limit position, the irrigation water stored in the field 102 flows out, although it does not affect the irrigation water management. However, by displacing the partition body 32 above the set position, it is possible to prevent the partition body 32 from being solidified by the cultivated soil while preventing the outflow of irrigation water. Further, the operating time of the electric actuator 14 can be shortened.

Further, for example, when the electric actuator 14 is made to perform the displacement operation of the partition body 32, the partition body 32 is moved from the set position to a predetermined range up and down (for example, a range of half of the range of motion) and then returned to the set position. It is also possible to control the electric actuator 14. As a result, it is possible to prevent the partition body 32 from being solidified by the cultivated soil while reducing the outflow of irrigation water. Further, the operating time of the electric actuator 14 can be shortened.

Further, for example, when the electric actuator 14 is made to perform the displacement operation of the partition body 32, the amount of movement of the partition body 32 downward is determined based on the water level information from the water level sensor, and the amount of movement downward from the set position is determined. It is also possible to move the partition body 32 by the amount of movement. To give a specific example, when the set position of the partition 32 (the height position of the upper end opening) is 15 cm from the ground surface and the field water level detected by the water level sensor is 10 cm, the set position of the partition 32 is set. The amount of movement from the bottom to the bottom may be determined to be 5 cm. As a result, it is possible to more appropriately prevent the partition body 32 from being solidified by the cultivated soil while reducing the outflow of irrigation water. Further, the operating time of the electric actuator 14 can be shortened.

Further, in the above-described embodiment, in S11 and S13 shown in FIG. 6, it is determined whether or not the CPU 90 of the electric actuator 14 has reached the set time, and the displacement operation of the partition body 32 is executed when the set time is reached. I made it. However, the processes of S11 and S13 shown in FIG. 6 may be executed by the CPU 90 based on the instruction from the cloud server (management server). That is, when the set time is reached, the cloud server transmits a control signal to the electric actuator 14 to execute the displacement operation of the partition body 32, and the CPU 90 of the electric actuator 14 drives the motor 52 according to the received control signal. It may be controlled.

Further, in the above-described embodiment, the waterfall port having a cylindrical partition 32 as the drainage portion 12 is illustrated, but the drainage portion 12 may have a flat plate-shaped partition body.

Furthermore, in the above-described embodiment, the drainage device 10 is applied with a control method in which the electric actuator 14 intermittently executes a displacement operation of moving the partition body 32 from the set position and returning it to the set position. It can also be applied to the water supply device 20. That is, apart from the operation of moving the valve body based on the setting change of the opening degree of the water tap 22, the electric actuator 24 intermittently executes a displacement operation of moving the valve body from the set position and returning it to the set position. You can also do it.

The specific numerical values such as the dimensions and the specific shapes mentioned above are merely examples, and can be appropriately changed as necessary such as product specifications.

10 ... Agricultural drainage device 12 ... Drainage unit 14, 24 ... Electric actuator 16 ... Adapter 20 ... Agricultural water supply device 22 ... Water faucet 32 ... Partition 52 ... Motor 54 ... Main gear 58 ... Rotating shaft 64 ... Control unit 90 ... CPU
92 ... Memory

Claims (5)

Agricultural drainage device that controls drainage from the field
Drainage unit with a partition that can set the drainage height by moving up and down,
An electric actuator including a drive mechanism for moving the partition body up and down, and an actuator control unit for controlling the operation of the electric actuator are provided.
The actuator control unit is separate from the operation of moving the partition body based on the change of the drainage height setting when the partition body is fixed at a predetermined set position based on the designation of the drainage height. An agricultural drainage device that intermittently causes the electric actuator to perform a displacement operation of moving the partition body from the set position and returning it to the set position. The first aspect of claim 1, wherein the actuator control unit controls the electric actuator so as to move the partition up and down over the entire range of motion of the partition when the electric actuator is made to perform the displacement operation. Agricultural drainage system. The actuator control unit controls the electric actuator so that when the electric actuator executes the displacement operation, the partition body is moved only upward from the set position and then returned to the set position. Item 1. Agricultural drainage device according to item 1. When the electric actuator is made to perform the displacement operation, the actuator control unit controls the electric actuator so that the partition body is moved from the set position to a predetermined range up and down and then returned to the set position. The agricultural drainage device according to claim 1. It is a control method of an agricultural drainage device including a drainage unit having a partition body whose drainage height can be set by moving up and down, and an electric actuator provided with a drive mechanism for moving the partition body up and down.
When the partition body is fixed at a predetermined set position based on the designation of the drainage height, the partition body is intermittently said to be separated from the operation of moving the partition body based on the setting change of the drainage height. A method for controlling an agricultural drainage device, which causes the electric actuator to perform a displacement operation of moving a partition body from the set position and returning it to the set position.

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