JP7096148B2 - Field water management system - Google Patents

Description

The present invention relates to a field water management system, and more particularly to, for example, a field water management system in which field water management is performed by remote control or automatic control.

An example of a conventional field water management system (water supply / drainage system) is disclosed in Patent Document 1. In the technique of Patent Document 1, a water supply control device (such as a water supply valve and a water outlet) having a displacement mechanism for controlling water supply to the field or drainage from the field is attached with an electric actuator for driving the displacement mechanism. It is possible to manage the water supply by remote operation or automatic control.

JP-A-2017-193914

In the technique of Patent Document 1, the electric actuator includes a wireless communication unit for performing wireless communication with an external device provided on the network. The antenna of the wireless communication unit is arranged inside the main body case of the electric actuator or inside a support column for attaching the solar cell panel to the main body case.

However, a solar cell panel and a metal holder for supporting the solar cell panel are provided on the main body case or column of the electric actuator. That is, since the antenna is arranged directly under the solar cell panel and the holding body, a part of the radio wave is blocked by the solar cell panel and the holding body, making it difficult for the radio wave to reach the antenna, and the wireless communication becomes unstable. There is.

Therefore, the main object of the present invention is to provide a novel field water management system.

Another object of the present invention is to provide a field water management system capable of stabilizing wireless communication of an electric actuator.

The first invention is a field water management system for managing water in a field, which is attached to a water supply control device and a water supply control device having a displacement mechanism for controlling water supply to the field or drainage from the field, and the displacement mechanism is provided. It is equipped with an electric actuator to drive and a sensor terminal installed in the field. The electric actuator is installed in the main body case, the solar cell panel provided on the main body case, and the main body case, and stores the power generated by the solar cell panel. A possible storage battery, a drive mechanism provided in the main body case to drive the displacement mechanism, a wireless communication unit provided in the main body case and capable of receiving a control signal of an electric actuator transmitted from an external device via an antenna, and a wireless communication unit. It is provided in the main body case and has a control unit that controls the operation of the electric actuator. The sensor terminal is connected to the electric actuator via wiring and is driven by the power supplied from the electric actuator to detect the state of the field. In addition, a sensor that outputs the detected data to the electric actuator and a ridged vertical tubular synthetic resin housing that houses the sensor are provided, and the antenna is arranged in the upper space inside the housing. It is a management system.

In the first invention, the field water management system includes a water supply control device such as a water tap or a water outlet, an electric actuator for driving a displacement mechanism of the water supply control device, and a sensor terminal provided in the field to manage water in the field. Perform by remote operation or automatic control. The electric actuator includes a main body case, a solar cell panel, a storage battery, a drive mechanism, a wireless communication unit, and a control unit. On the other hand, the sensor terminal includes a sensor such as a water level sensor that detects the state of the field, and a ridged vertical tubular synthetic resin housing that houses the sensor. The sensor of the sensor terminal is connected to the electric actuator via wiring, is driven by the electric power supplied from the electric actuator, and outputs the detected data to the electric actuator. The antenna of the wireless communication unit included in the electric actuator is arranged in the upper space inside the housing of the sensor terminal.

According to the first invention, since the antenna of the wireless communication unit included in the electric actuator is arranged in the upper space inside the housing of the sensor terminal, the radio waves transmitted and received by the antenna are less likely to be affected by the solar cell panel and the like. Therefore, the radio wave condition is improved, and the wireless communication of the electric actuator can be stabilized.

The second invention is dependent on the first invention, and the antenna is arranged at a position higher than the upper surface of the main body case.

According to the second invention, the third invention, which can more appropriately stabilize the wireless communication, is subordinate to the first or second invention, and the wiring connecting the antenna and the wireless communication unit is In the external space between the housing and the main body case, the wiring connecting the sensor and the electric actuator and the outer surface protective layer are integrated.

According to the third invention, it is not necessary to separately perform a protective treatment such as a water stop treatment on the wiring for the antenna.

According to the present invention, since the antenna of the wireless communication unit included in the electric actuator is arranged in the upper space inside the housing of the sensor terminal, the radio waves transmitted and received by the antenna are less likely to be affected by the solar cell panel and the like. Therefore, the radio wave condition is improved, and the wireless communication of the electric actuator can be stabilized.

The above-mentioned object, other object, feature and advantage of the present invention will be further clarified 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 which is one Example of this invention. It is a block diagram which shows the electric composition of a field water management system. It is a schematic diagram which shows the internal structure of a water tap. It is a schematic diagram which shows the internal structure of an electric actuator. It is a schematic diagram which shows the water tap which attached the electric actuator. It is a schematic diagram which shows the waterfall port which attached the electric actuator. It is a schematic diagram which shows the adapter for attaching an electric actuator to a waterfall port.

With reference to FIGS. 1 and 2, the field water management system 10 (hereinafter, simply referred to as “system 10”) according to an embodiment of the present invention is an example of a water supply control device provided in the field 100. It is provided with a plug 12 and a water drop port 14, which is another example of a water supply control device. In the system 10, an electric actuator 16 is attached to each of the water tap 12 and the water drop port 14, and water management of the field 100 is performed by remote control or automatic control based on a pre-stored program.

As will be described in detail later, in this embodiment, an electric actuator 16 having the same structure is used as the electric actuator for driving the displacement mechanism of the water tap 12 and the water drop port 14. Further, the system 10 includes a sensor terminal 18 having a sensor (water level sensor 94 or the like) for detecting the state of the field 100, and the sensor information detected by the sensor terminal 18 is input to the control unit 64 of the electric actuator 16. Will be done.

Further, in this embodiment, the system 10 is a system including a plurality of cultivated areas partitioned by ridges. Each of the water tap 12 and the waterfall port 14 is installed in each cultivated area, and each electric actuator 16 attached to these is wirelessly communicated with the repeater 120 by a wireless communication method in accordance with the specified low power wireless standard (920 MHz band). Can be connected. Then, each electric actuator 16 wirelessly communicates with the remote control terminal 124 such as a smartphone, a tablet terminal, a PDA and a PC owned by the user via the repeater 120 and the management server 122 provided on the network. Can be connected.

In this wireless communication, cloud computing may be used. For example, the information acquired by each electric actuator 16 (information about the state of the water tap 12 and the water drop port 14 such as the opening degree of the valve body 30 and the set position of the partition body 72, and the water level of the field 100 received from the sensor terminal 18). (Sensor information, etc.) is transmitted to and stored in the cloud server, which is an example of the management server 122, at any time. The user confirms the information acquired by each electric actuator 16 by accessing the cloud server from the remote control terminal 124, and remotely controls each electric actuator 16 by using the remote control terminal 124 to control the field 100. Can manage water.

Hereinafter, the configurations of the water tap 12, the water drop port 14, the electric actuator 16, and the sensor terminal 18 included in the system 10 will be described. However, these specific configurations are not limited to those exemplified below, and can be appropriately changed without departing from the spirit of the present invention.

As shown in FIG. 3, the water tap 12 is a water supply device for controlling water supply from the water pipeline 106 to the cultivated area (field 100), and has a displacement mechanism including a valve shaft and a valve body. In this embodiment, a water tap having 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.

Briefly, the water tap 12 includes a cylindrical valve box 20. The upper half of the valve box 20 is covered with a dome-shaped shatterproof cover 22, and a plurality of spout ports 24 are formed so as to be arranged in the circumferential direction on the upper part of the side wall of the valve box 20. Further, a bearing 26 having a female thread formed on the inner peripheral surface is provided at the upper end of the valve box 20, and a male thread is formed on the outer peripheral surface of the bearing 26 so as to penetrate the shatterproof cover 22. The valve shaft 28 is screwed. At the lower end of the valve shaft 28, a disk-shaped valve body 30 having a water blocking rubber 30a on the lower surface is provided. Further, a valve seat 32 having a water passage port 32a is provided at a substantially central portion in the valve box 20. In such a water tap 12, when a rotational force around the axis is applied to the valve shaft 28, the valve shaft 28 and the valve body 30 move up and down by the feed screw mechanism, and the water passage port 32a of the valve seat 32 is opened and closed. To. That is, the water tap 12 of this embodiment includes a displacement mechanism including a valve body 30 that moves up and down with the rotation of the valve shaft 28.

As shown in FIG. 1, the water tap 12 as described above is arranged in the water supply basin 104, and is a branch pipe 108 that branches from the water pipeline 106 laid under the farm road 102 and extends into the field 100. It is attached to the downstream end (upper end) of. An electric actuator 16 is mounted on the water tap 12, and the displacement mechanism (valve shaft 28 and valve body 30) of the water tap 12 is operated by the electric actuator 16.

Next, the configuration of the electric actuator 16 will be described. With reference to FIGS. 4 and 5, the electric actuator 16 includes a cylindrical body case 40. The size, shape, material, and the like 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 vertical length (height dimension) of the main body case 40 is, for example, 800 mm.

A solar cell panel 42 is detachably mounted on the main body case 40. The solar cell panel 42 is supported at a predetermined angle by a metal holding body 44 having a bent plate shape.

Further, inside the main body case 40, an electronic board 48, a storage battery 50, a drive mechanism including a motor 52, a main gear 54, and the like are housed.

The electronic board 48 is provided with a control unit 64 including a CPU, a memory, and the like, a wireless communication unit 66 including a wireless communication module, and the like (see FIG. 2). A motor 52, an operation panel 60, a wireless communication unit 66, a water level sensor 94, and the like are electrically connected to the control unit 64. The CPU of the control unit 64 controls the overall control of the electric actuator 16 and controls the drive of the motor 52 and the like. The memory comprehensively indicates ROM, RAM, HDD, and the like, and stores a control program that controls the operation of the electric actuator 16 and functions as a work area when the CPU operates. Further, the wireless communication unit 66 is connected to the antenna 68 by, for example, a coaxial cable, and wirelessly communicates with an external device such as a repeater 120 via the antenna 68.

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.

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 valve shaft 28 of the water tap 12 is formed at the lower end portion of the rotating shaft 58. Further, 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 to extend along the direction. As a result, the rotating shaft 58 rotates as the main gear 54 rotates, and becomes slidable in the axial direction with respect to the shaft portion of the main gear 54.

Further, on the outer surface of the main body case 40, an operation panel 60 for manually operating the motor 52 is provided. The operation panel 60 is appropriately provided with a main power switch, an ascending button, a descending button, a selection button for switching an operation mode (remote mode, automatic mode, manual mode, etc.) of the electric actuator 16, and the like. The operation panel 60 is also provided with a connection terminal for connecting the wiring extending from the sensor terminal 18. Further, an inspection port 62 for performing maintenance work such as operation check and cleaning of the rotating shaft 58 and the like is formed at the lower end portion of the main body case 40.

As shown in FIG. 5, when the electric actuator 16 is mounted on the water tap 12, the shatterproof cover 22 has the main body case 40 of the electric actuator 16 mounted on the shatterproof cover 22 of the water tap 12. And the bearing 26 and the bottom wall of the main body case 40 are bolted. Further, the upper end portion of the valve shaft 28 of the water tap 12 and the coupling portion 58a of the rotary shaft 58 of the electric actuator 16 are non-rotatably connected.

In the water faucet 12 to which the electric actuator 16 is attached as described above, for example, the user accesses the management server 122 by using the remote control terminal 124, and the water faucet 12 is fully closed, fully opened, or has an arbitrary opening. When an operation instruction (control signal) such as the above is transmitted, the control signal corresponding to the operation instruction is transmitted from the management server 122 to the electric actuator 16 via the repeater 120. The control unit 64 of the electric actuator 16 drives the motor 52 in response to the control signal received by the wireless communication unit 66. The driving force of the motor 52 is transmitted to the main gear 54, and the rotating shaft 58 rotates together with the main gear 54. As a result, a rotational force is applied to the valve shaft 28 of the water tap 12 that is fixedly connected to the rotary shaft 58. The valve shaft 28 to which the rotational force is applied is moved up and down by the feed screw mechanism between itself and the bearing 26, and the valve body 30 is moved to a fully open position, a fully closed position, and the like.

Further, the information acquired by each electric actuator 16 (information about the state of the water faucet 12, sensor information received from the sensor terminal 18, etc.) is periodically transmitted from the wireless communication unit 66 of the electric actuator 16 to the repeater 120. It is transmitted to the management server 122 via.

Subsequently, the configuration of the waterfall port 14 will be described. As shown in FIGS. 1 and 6, the water drop port 14 is a drainage device for controlling drainage from the field 100, and has a displacement mechanism including a partition body and the like. In this embodiment, the water drop port 14 having a water level setting function is used.

Briefly, the water drop port 14 includes a short cylindrical rubber receiving frame member 70 and a cylindrical partition 72 that is fitted into the receiving frame member 70 and is vertically and vertically supported by the receiving frame member 70. .. The upper end opening of the partition 72 functions as a drainage port. Then, when a force is applied to the partition body 72 in the vertical direction (axial direction), the partition body 72 moves up and down, and the drain port is adjusted to an arbitrary height.

As shown in FIG. 1, such a water drop port 14 is arranged in, for example, a drainage basin 110, and is attached to an upstream end portion of a drainage pipe 114 extending to a drainage channel 112. Then, an electric actuator 16 is attached to the water drop port 14, and the displacement mechanism (partition body 72) of the water drop port 14 is moved up and down by the electric actuator 16.

When the electric actuator 16 is attached to the water drop port 14, the adapter 74 is used. As described above, the partition 72 of the water falling port 14 is only provided so as to be able to move 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 rotary shaft 58 of the electric actuator 16 into a force in the vertical direction (axial direction) and transmit it to the partition body 72. Therefore, a movable portion 82 that moves up and down by a screw mechanism is provided on the adapter 74, and the rotating shaft 58 and the partition body 72 are connected via the movable portion 82.

Specifically, as shown in FIGS. 6 and 7, the adapter 74 includes a flat plate-shaped pedestal 76 for mounting the electric actuator 16 on the drainage basin 110. An insertion hole is formed in the central portion of the pedestal 76, and a cylindrical holding portion 78 is provided in the insertion hole. The upper portion of the connecting shaft 80 connected to the rotating shaft 58 of the electric actuator 16 is rotatably inserted into the holding portion 78. Further, a male screw is formed on the outer peripheral surface of the lower portion 80a of the connecting shaft 80, and a cylindrical movable portion 82 having a female screw formed on the inner peripheral surface is screwed onto the lower portion 80a of the connecting shaft 80. The movable portion 82 is provided with a fixing portion 84 for connecting and fixing the partition body 72 to the movable portion 82. Further, a rod-shaped detent portion 86 for preventing the movable portion 82 from rotating (rotating) together with the connecting shaft 80 is provided so as to connect the fixed portion 84 and the pedestal 76. In such an adapter 74, when a rotational force around the axis is applied to the connecting shaft 80, the movable portion 82 and the fixed portion 84 move up and down by the feed screw mechanism.

When the electric actuator 16 is attached to the water drop port 14 by using the adapter 74, the pedestal 76 is attached to the upper end portion of the drainage basin 110, and the end portion of the fixing portion 84 is bolted to the partition body 72. Further, the electric actuator 16 is placed on the pedestal 76 to bolt the pedestal 76 and the bottom wall of the main body case 40, and the upper end portion of the connecting shaft 80 cannot be rotated with respect to the coupling portion 58a of the rotating shaft 58. Connect to.

In the waterfall port 14 to which the electric actuator 16 is attached as described above, for example, the user accesses the management server 122 using the remote control terminal 124, and the drainage height at the waterfall port 14 (the height of the upper end opening of the partition body 72). When an operation instruction for changing the position) is transmitted, a control signal corresponding to the operation instruction is transmitted from the management server 122 to the electric actuator 16 via the repeater 120. The control unit 64 of the electric actuator 16 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 80 of the adapter 74 that is fixedly connected to the rotating shaft 58. When a rotational force around the axis is applied to the connecting shaft 80, the movable portion 82 moves up and down by the feed screw mechanism between the connecting shaft 80 and the movable portion 82, and accordingly, the partition connected and fixed to the movable portion 82. The body 72 is moved to a predetermined height position.

Subsequently, the configuration of the sensor terminal 18 will be described. As shown in FIG. 1, the sensor terminal 18 includes a ridged vertical tubular housing 90 formed of a synthetic resin such as hard chloride building, and is provided in the field 100 at positions around the water tap 12 and the waterfall port 14. Be done. The sensor terminal 18 is erected in the field 100, for example, by connecting and fixing the housing 90 to the rod-shaped fixture 92 pierced into the field 100. The nominal diameter of the housing 90 is, for example, 50 mm. Further, the vertical length (height dimension) of the housing 90 is preferably set so that the upper portion of the housing 90 extends upward from the upper surface of the main body case 40 of the electric actuator 16, for example, 1500. It is set to ~ 2000 mm.

The housing 90 of the sensor terminal 18 accommodates various sensors for detecting the state of the field 100. In this embodiment, the sensor terminal 18 includes a water level sensor 94 that detects the field water level. As the water level sensor 94, for example, a sensor that measures the field water level by utilizing the change in the capacitance or pressure of the irrigation water may be used.

However, the sensor terminal 18 includes a water temperature sensor that detects the temperature of the water stored in the field 100, a temperature sensor that detects the temperature, and a humidity sensor that detects the humidity, together with the water level sensor 94 or instead of the water level sensor 94. Sensors such as a pressure sensor for detecting the pressure pressure, a soil moisture sensor for detecting the soil moisture, and a soil temperature sensor for detecting the temperature of the soil may be appropriately provided. Further, it is not necessary to connect the same type of sensor to all the electric actuators 16, and the type and number of sensors to be connected may be different depending on the electric actuator 16, and the water faucet 12 and the water drop port 14 may be different. It is also possible to connect the sensor only to the electric actuator 16 attached to either one.

The sensor provided in the sensor terminal 18 (water level sensor 94 in this embodiment) is connected to the control unit 64 of the electric actuator 16 by, for example, a signal cable conforming to the RS-485 standard. Then, the sensor information such as the field water level detected by the sensor included in the sensor terminal 18 is input to the control unit 64 of the electric actuator 16. Further, as the power source for operating the sensor included in the sensor terminal 18, the electric power stored in the storage battery 50 of the electric actuator 16 is used, and this electric power is supplied to the sensor from the control unit 64. By using the solar cell panel 42 and the storage battery 50 included in the electric actuator 16 as the power source for the sensor terminal 18, it is not necessary to separately provide a power source such as a dry battery for the sensor terminal 18, and the trouble of battery replacement is not required.

Then, in this embodiment, the antenna 68 of the wireless communication unit 66 included in the electric actuator 16 is arranged in the upper space in the housing 90 of the sensor terminal 18. That is, the antenna 68 of the wireless communication unit 66, which can receive the control signal for driving the electric actuator 16 from an external device such as the management server 122, is in the main body case 40 directly under the solar cell panel 42 and the holding body 44. It is arranged in the housing 90 away from the main body case 40. As a result, the radio waves transmitted and received by the antenna 68 are less likely to be affected by the solar cell panel 42 and the holding body 44, so that the radio wave condition is improved and the wireless communication of the electric actuator 16 can be stabilized. Further, by arranging the antenna 68 in the housing 90, the weather resistance of the antenna 68 is also maintained.

Here, as shown in FIG. 1, the field 100 includes a plurality of cultivated areas arranged in a stepped manner across the farm road 102. In such a case, for example, irrigation water is supplied to the cultivated plots (field 100) on both sides from the irrigation pipeline 106 laid under the farm road 102. That is, the water tap 12 is arranged at the end of the field 100 on the water pipeline 106 side, and the water drop port 14 is arranged at the end on the opposite side. The repeater 120 is arranged on the farm road 102 at the highest position in the surrounding area. In such a field 100, communication failure is unlikely to occur in a cultivated area at a position substantially the same height as the farm road 102 in which the repeater 120 is installed. On the other hand, in the cultivated area located lower than the farm road 102 where the repeater 120 is installed, if the antenna 68 is installed in the main body case 40 of the electric actuator 16 as in the conventional case, it is arranged near the slope. Communication failure is likely to occur in the electric actuator 16 of the water tap 12 (that is, arranged in a position invisible from the repeater 120). The same can be said for the electric actuator 16 installed in the field 100 at a high position when the repeater 120 is arranged on the farm road 102 at a low position.

Therefore, especially for the electric actuator 16 installed at a position where communication failure is likely to occur as described above, when the antenna 68 is provided in the housing 90 of the sensor terminal 18, the height dimension of the housing 90 is set large in advance. In addition, it is preferable to arrange the antenna 68 at a position higher than the upper surface of the main body case 40, and more preferably at a position higher than the upper end of the solar cell panel 42. By arranging the antenna 68 at a high position in the housing 90 of the tall sensor terminal 18 in this way, the radio wave condition is further improved, so that the electric motor is installed at a position where communication failure is likely to occur as described above. The actuator 16 can also appropriately transmit and receive radio waves, and can further stabilize the wireless communication of the electric actuator 16.

Further, as described above, the wireless communication unit 66 and the antenna 68 are connected by wiring such as a coaxial cable, and the control unit 64 of the electric actuator 16 and the water level sensor 94 are connected by wiring such as a signal cable. It is preferable that these wirings are integrated into one wiring 96 by an outer surface protective layer having weather resistance and water blocking property in the external space between the main body case 40 and the housing 90. This eliminates the need to separately perform a protective treatment such as a water stop treatment on the wiring for the antenna 68.

As described above, according to this embodiment, since the antenna 68 of the wireless communication unit 66 included in the electric actuator 16 is arranged in the upper space in the housing 90 of the sensor terminal 18, the radio waves transmitted and received by the antenna 68 are the sun. It becomes less susceptible to the influence of the battery panel 42 and the holding body 44. Therefore, the radio wave condition is improved, and the wireless communication of the electric actuator 16 (and thus the system 10) can be stabilized. Further, by improving the radio wave condition, the applicable range of the system 10 can be expanded.

In the above embodiment, the system 10 includes both the water tap 12 which is an example of the water supply control device and the water drop port 14 which is another example, but either the water tap 12 or the water drop port 14. It may just be equipped with. Further, even when the system 10 includes both the water faucet 12 and the water drop port 14, the configuration in which the antenna 68 of the wireless communication unit 66 of the electric actuator 16 is arranged in the housing 90 of the sensor terminal 18 is such that the water faucet 12 is provided. It can also be adopted only for the electric actuator 16 on either the side or the waterfall port 14 side. When the sensor terminal 18 is connected only to the electric actuator 16 of either the water faucet 12 or the water drop port 14, the wireless communication unit of the electric actuator 16 is housed in the housing 90 of the sensor terminal 18. The antenna 68 of 66 will be arranged.

Further, in the above-described embodiment, the wireless communication unit 66 of the electric actuator 16 wirelessly communicates with the management server 122 or the like via the repeater 120, but the repeater 120 does not necessarily have to be installed. For example, the wireless communication unit 66 may perform wireless communication with an external device such as the management server 122 or the remote control terminal 124 without going through the repeater 120, and may receive the control signal of the electric actuator 16.

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 ... Field water management system 12 ... Water faucet (water supply control device)
14 ... Water drop port (water supply control device)
16 ... Electric actuator 18 ... Sensor terminal 30 ... Valve body 40 ... Main body case 42 ... Solar cell panel 50 ... Storage battery 52 ... Motor 54 ... Main gear 58 ... Rotating shaft 72 ... Partition 90 ... Housing 94 ... Water level sensor 96 ... Wiring 100 ... Field 120 ... Repeater 122 ... Management server 124 ... Remote control terminal

Claims (3)

It is a field water management system that manages water in the field.
A water supply control device having a displacement mechanism for controlling water supply to the field or drainage from the field.
It is equipped with an electric actuator attached to the water supply control device to drive the displacement mechanism, and a sensor terminal provided in the field.
The electric actuator is
Body case,
The solar cell panel provided on the main body case,
A storage battery provided in the main body case and capable of storing electric power generated by the solar cell panel.
A drive mechanism provided in the main body case to drive the displacement mechanism,
A wireless communication unit provided in the main body case and capable of receiving a control signal of the electric actuator transmitted from an external device via an antenna, and a control provided in the main body case to control the operation of the electric actuator. Equipped with a part
The sensor terminal is
It is connected to the electric actuator via wiring, is driven by the electric power supplied from the electric actuator, detects the state of the field, and houses a sensor that outputs the detected data to the electric actuator, and the sensor. Equipped with an ecstatic vertical tubular synthetic resin housing,
The antenna is a field water management system arranged in an upper space in the housing. The field water management system according to claim 1, wherein the antenna is arranged at a position higher than the upper surface of the main body case. The wiring connecting the antenna and the wireless communication unit is integrated with the wiring connecting the sensor and the electric actuator in the external space between the housing and the main body case by an outer surface protective layer. , The field water management system according to claim 1 or 2.

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