JP7304805B2 - Field water management system and hydrant control device - Google Patents

Description

The present invention relates to a field water management system and a hydrant control device.

Patent Literature 1 discloses a water tap and a drain tap provided with an electric field actuator that operates a displacement mechanism for controlling water supply to or drainage from a field. By using these water taps and drain taps, it becomes possible to remotely control the water supply to and drainage from the field via the field water management server.

The field electric actuator is a control device that controls a hydrant or a drain valve, and includes an actuator equipped with an electric motor that operates the hydrant or the drain valve, and an electronic controller that controls the actuator and communicates with a field water management server. It has a controller with a circuit.

Since it is difficult to use a commercial power supply in a field that is far away from a commercial power supply facility, it is equipped with a storage battery that supplies power to the control unit and actuators, and a solar cell for charging to avoid a decrease in the state of charge of the storage battery. .

Furthermore, in order to avoid wasting the power of the storage battery, the control unit has a power saving state that limits the power consumption of the storage battery, and wakes up periodically from the power saving state to communicate with the field water management server. The control unit is configured to switch the operation mode between an operation state in which control operations including control operations can be executed, and when the control unit is switched to the operation state, communication with the field water management server, control of the actuator for the water tap, measurement of the water level, etc. is configured to perform

JP 2017-193914 A

However, if the cycle of switching between the power saving state and the operating state is lengthened in order to avoid exhaustion of the storage battery, there is a delay of at least one cycle when the agricultural field water management server sends an emergency command to the control device. will occur.

Further, if the cycle of switching between the power saving state and the operating state is shortened, the delay time for receiving the command from the field water management server is shortened, but there is a problem that the storage battery is consumed quickly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a field water management system and a hydrant control device that can reduce communication delays while avoiding consumption of a storage battery in view of the problems described above.

In order to achieve the above object, a first characteristic configuration of an agricultural field water management system according to the present invention comprises a hydrant, an actuator for operating the hydrant, a water supply controller for controlling the actuator, and a field water management server. a faucet control device for supplying irrigation water from the faucet to a field, comprising an electronic control circuit having a communication unit for communication; and a storage battery for supplying power to the electronic control circuit and the actuator; A field water management system comprising: a remote control terminal for setting and inputting remote control information; and a field water management server for receiving the remote control information from the remote control terminal and remotely controlling a corresponding hydrant control device. The electronic control circuit is capable of executing a control operation including communication with the farm field water management server by periodically waking up from a power saving state that limits the power consumption of the storage battery and from the power saving state. A hydrant power management unit for switching an operation mode between operating states is provided, and the hydrant power management unit is configured to variably set a wake-up cycle of the electronic control circuit based on the remaining capacity of the storage battery. and the field water management server is configured to update the setting information of the wake-up cycle of the water tap power management unit based on the remaining capacity of the storage battery transmitted from the water tap control device, The hydrant power management unit includes an automatic setting unit that automatically sets the wakeup cycle based on the remaining capacity of the storage battery regardless of the wakeup cycle setting information transmitted from the field water management server. at the point.

Since the wake-up cycle of the electronic control circuit is variably set based on the remaining capacity of the storage battery, it is possible to alleviate communication delays while avoiding exhaustion of the storage battery. For example, if the remaining capacity of the storage battery is sufficient, the wakeup cycle is set to a short value to shorten the delay. can be suppressed.

In addition, the field water management server manages the remaining capacity of the storage battery transmitted from each hydrant control device, and updates the wake-up cycle setting information based on each remaining capacity, thereby waking up each hydrant control device. It becomes possible to manage the control unit efficiently based on the period.

Then, when the setting information of the wake-up cycle sent from the field water management server is abnormal such that it does not match the remaining capacity of the storage battery, the wake-up cycle is set by the automatic setting unit to efficiently reduce the remaining capacity of the storage battery. be ready to use.

In the second characteristic configuration, in addition to the first characteristic configuration described above, the water hydrant control device further includes a solar cell for charging the storage battery, and the field water management server receives the remaining capacity information of the storage battery. In addition, it is configured to update the setting information of the wake-up period set in the hydrant power management section based on either the sunshine information or the time information.

In addition to the remaining capacity of the storage battery, it is possible to evaluate the power generation capacity of the solar cell and the charging capacity of the storage battery from the sunshine information. Therefore, a more appropriate wakeup period can be set.

In the third characteristic configuration, in addition to the above-described first or second characteristic configuration, when the farm field water management server receives unplanned remote control information from the remote control terminal, the residual capacity of the storage battery The configuration is such that the setting information of the wakeup cycle set in the water tap power management unit is updated regardless of the capacity.

When the field water management server receives some unplanned remote control information from a remote control terminal, response delays caused by the wakeup cycle can be reduced by updating the wakeup cycle setting information regardless of the remaining capacity of the storage battery. can be avoided.

The fourth characteristic configuration is that, in addition to the third characteristic configuration described above, the unplanned remote control information includes a hydrant opening/closing request or a wakeup cycle update request.

When the field water management server receives a hydrant open/close request or a wake-up cycle update request from a remote control terminal, by updating the wake-up cycle setting information, Appropriate responses such as opening and closing control of water taps are possible without incurring large delays.

In the fifth characteristic configuration, in addition to any one of the first to fourth characteristic configurations described above, the agricultural field water management server transmits time information to the water hydrant control device, and the water hydrant power management unit The point is that the wakeup cycle and time are set based on the time information.

Since the wake-up cycle is set based on the time information transmitted from the field water management server, the time synchronization is achieved between the field water management server and the electronic control circuit, and the signal from the field water management server to each electronic control circuit is set. You will be able to communicate properly and without waste.

A first characteristic configuration of a water hydrant control device according to the present invention is an electronic control circuit having an actuator that operates the water hydrant, a water supply control unit that controls the actuator, and a communication unit that communicates with a field water management server. A water supply used in an agricultural field water management system comprising the electronic control circuit and a storage battery for supplying power to the actuator, and having any one of the first to fifth characteristic configurations described above for supplying irrigation water from the water tap to the agricultural field. In the plug control device, the electronic control circuit is configured to control operation including a power saving state for limiting power consumption of the storage battery, and periodic wake-up from the power saving state to communicate with the field water management server. and a water tap power management unit for switching between an operating state capable of executing the water supply The plug power management unit is configured to shift to the power saving state when there is no access from the agricultural field water management server within a predetermined time after shifting to the operating state.

INDUSTRIAL APPLICABILITY As described above, according to the present invention, it is possible to provide an agricultural field water management system and a hydrant control device that can alleviate communication delay while avoiding consumption of a storage battery.

Illustration of field water management system Explanatory diagram of functional blocks of a hydrant control device and a drain cock control device Cross-sectional view of hydrant device Sectional view of drain plug device Flowchart showing a procedure of field water supply control executed by a hydrant control device Flowchart showing a procedure of field water supply control executed by a field water management server

A field water management system and a hydrant control device according to the present invention will be described below.
[Configuration of field water management system]
As shown in FIG. 1, in each field 1 where rice is cultivated, there is a water tap device 12 that guides irrigation water flowing through a water supply pipe 10 to the field 1 through a water conduit 11, and a water discharge channel 21. A drain plug device 22 for draining water from the field 1 to a drainage channel 20 is provided, and the water tap device 12 is provided with a capacitance type water level sensor 2 for measuring the water level of the field 1 .

Each water tap device 12 and drain tap device 22 is configured to be connectable to an agricultural field water management server 34 via the Internet 30, and a mobile terminal 36 such as a smartphone owned by an administrator of the farm field 1 can connect to the field water via the Internet 30. It is configured to be connectable with the management server 34 . That is, the field water management system 100 is configured by the water tap devices 12, the drain valve device 22, the mobile terminal 36, the field water management server 34, and the Internet 30 that communicably connects them.

Taking rice cultivation as an example, each process of rice cultivation, such as puddling, rice planting, rooting stage, tillering stage (early stage, late stage), young panicle formation stage, ear emergence flowering stage, ripening stage, etc. It is necessary to adjust the reservoir water level of In particular, during the puddling season, water is conveyed to multiple fields all at once, so efficient water supply management is necessary for flooding.

Therefore, the farm field water management server 34 is configured to generate a water supply schedule for each farm field 1 based on a water supply request for each farm field 1 requested by each manager via the mobile terminal 36 . That is, the portable terminal 36 functions as a remote control terminal.

The water supply request transmitted from the mobile terminal 36 includes a field ID that identifies the field to be watered, the date and time of water supply, and the water level. The field water management server 34 is configured to generate a water supply schedule for each field for which a water supply request has been made according to a pre-registered field map, and store the water supply schedule in a storage unit provided in the field water management server 34 .

The farm field water management server 34 outputs a drainage water level adjustment command to the drain plug device 22 of the relevant farm field 1 at the water supply date and time determined in the water supply schedule stored in the storage unit, and supplies water to the relevant farm field 1. A water supply command is output to the tap device 12 . Drainage water level means the target reservoir water level of the field.

The drain plug device 22 that receives the drain water level adjustment command adjusts the drain water level by vertically moving the drain tube, which is a weir, via an actuator, and the water tap device 12 that receives the water supply command opens the water supply valve via the actuator. It is opened to lead water to the farm field 1. A water tap device 12 to which the signal line of the water level sensor 2 is connected closes the water supply valve via an actuator to stop water supply when it determines that the field water level detected by the water level sensor 2 has reached a predetermined water level. do.

Further, the hydrant device 12 may transmit the field water level detected by the water level sensor 2 to the field water management server 34 so that the field water management server 34 can grasp the water level of each field 1 . In this case, when the field water management server 34 determines that the stored water level has reached the target water level from the received water level information, it transmits a water supply stop command to the water supply faucet device 12, and the water supply faucet device 12 that received the water supply stop command. may close the water supply valve via an actuator to stop water supply.

As shown in FIG. 2, the drain plug device 22 includes a drain plug 22A and a drain plug control device 22B detachably attached to the drain plug 22A.
The drain plug control device 22B includes an actuator 240 that operates the drain plug 22A, a drain water level control unit 236 that controls the actuator 240, a communication unit 237 that communicates with the field water management server 34, a drain plug power management unit 239, It has In addition, a storage battery 233 that supplies power to the motor provided in the actuator 240, a drain water level control unit 236, a communication unit 237, and the like, and a solar cell 232 that charges the storage battery 233 are provided.

The drain water level control unit 236 and the communication unit 237 are configured with peripheral circuits such as a CPU, a memory, an input/output circuit and a communication circuit, and a predetermined function is performed by the CPU executing a control program stored in the memory. , a lifting control function for the weir provided in the drain plug 22A is realized. That is, the control panel 235 becomes an electronic control circuit.

The water tap device 12 includes a water tap 12A and a water tap control device 12B detachably attached to the water tap 12A.
The water hydrant control device 12B includes an actuator 140 that operates the water hydrant 12A, a water supply control unit 136 that controls the actuator 140, a communication unit 137 that communicates with the field water management server 34, and a water hydrant power management unit 139. I have. In addition, a storage battery 133 that supplies power to the motor provided in the actuator 140, a water supply control unit 136, a communication unit 137, and the like, and a solar cell 132 that charges the storage battery 133 are provided.

[Configuration of water tap device]
As shown in FIG. 3, the water tap control device 12B is detachably attached to the upper surface of the water tap 12A housed in the water supply trough 101 (see FIG. 1) provided in the field.

The water tap 12A includes a cylindrical valve box 120, a valve seat 121 protruding inward from the center of the valve box 120 in the vertical direction, and a valve seat 121 facing the valve seat 121. It has a disk-shaped valve body 124 to which 123 is attached. A lower end of the valve box 120 is connected to the water conduit 11 branched from the water supply pipe 10 .

A bearing 126 having a female thread formed on its inner peripheral surface is attached to the upper end of the valve box 120 , and a valve shaft 125 having a male thread formed on its outer peripheral surface is screwed into the bearing 126 . A lower end of the valve shaft 125 is fixed to the valve body 124 .

A water passage hole 122 is formed in the central portion of the valve seat 121, and a plurality of water outlet windows 127 are formed in the upper portion of the side wall of the valve box 120 so as to be arranged in the circumferential direction. When a rotational force is applied to the valve shaft 125, the valve shaft 125 moves up and down along the bearing 126, and the valve body 124 moves up and down as the valve shaft 125 moves up and down. That is, the valve mechanism is composed of the valve seat 121, the valve body 124, and the seal member 123 provided between the valve seat 121 and the valve body 124, and the like.

The faucet control device 12B includes a watertight casing 131, a solar cell 132 attached to the top surface of the casing 131 in an inclined posture so as to face the sun, a drive mechanism 140 housed in the casing 131, and a storage battery 133. , an antenna 134, a control panel 135, and the like. The control panel 135 incorporates a water supply control unit 136 for controlling the valve mechanism, a communication unit 137, and the like.

The water supply control unit 136 and the communication unit 137 are configured to include peripheral circuits such as a CPU, a memory, an input/output circuit, and a communication circuit. An opening/closing control function is realized for the valve mechanism provided in the water tap 12A. That is, the control panel 135 becomes the electronic control circuit of the present invention.

The water supply control unit 136 controls the valve discharge mechanism via the drive mechanism 140 to open the valve to a preset valve opening degree when a water intake instruction is received from the farm water management server 34 via the communication unit 137. When it is transmitted from the management server 34 that the water level in the field has reached the target water level, the valve mechanism is closed.

Electric power generated by the solar cell 132 is charged to the storage battery 133 , and the charged electric power of the storage battery 133 is consumed as control electric power for the water supply control unit 136 and the communication unit 137 .

The drive mechanism 140 includes a DC motor 141 with a built-in encoder, a hollow main gear 143 that meshes with a gear 142 provided on the output shaft of the DC motor 141, and a drive shaft 146 inserted through the hollow portion of the main gear 143. etc., and functions as an actuator for driving the valve body 124 up and down.

The main gear 143 is a double-boss gear having a vertically extending cylindrical boss portion 144 and a disc-shaped gear portion 145 extending from the vertically central portion of the boss portion 144. The top and bottom of 144 are rotatably supported by bearings. A key protruding from the outer peripheral surface of the drive shaft 146 is engaged with a key groove formed on the inner peripheral surface of the boss portion 144, so that the main gear 143 and the drive shaft 146 rotate integrally.

The lower end of the drive shaft 146 and the upper end of the valve shaft 125 are drivably connected through a coupling 147, and when the DC motor 141 rotates in one direction, the valve body 124 rises and enters the water supply state, and the DC motor 141 rotates in the opposite direction. When rotationally driven, the valve body 124 descends to stop water.

[Configuration of drain plug device]
As shown in FIG. 4, the drain plug control device 22B is detachably attached to the upper surface of the drain plug 22A housed in the drain pit 201 (see FIG. 1) provided in the field.

The drain plug 22A includes a receiving frame member 211 installed at the bottom of the drain basin 201, a dam body 212 which is a cylindrical drain pipe supported by the receiving frame member 211 so as to be able to move up and down, and a vertical movement of the dam body 212. A mechanism 220 is provided. The upper end opening of the weir body 212 functions as a drain port 212a, and surplus water supplied to the field 1 overflows from the drain port 212a and flows out to the discharge channel 21.

A U-shaped support portion 213 in a side view is fixed to the upper end opening of the dam body 212 , and an elevating mechanism 220 is attached to the support portion 213 . The lifting mechanism 220 has a cylindrical movable portion 221 fixed to the upper surface of the support portion 213 and having a female screw formed on the inner peripheral surface, and a male screw formed on the outer peripheral surface and screwed with the female screw of the movable portion 221 . and a pair of rod-shaped bodies 223 that prevent the movable portion 221 from rotating together with the rotating shaft 222 .

That is, when the rotating shaft 222 rotates in one direction, the gate body 212 attached to the movable portion 221 via the support portion 213 rises together with the movable portion 221, and when the rotating shaft 222 rotates in the opposite direction, The gate body 212 attached to the movable portion 221 via the support portion 213 descends together with the movable portion 221 . The drain water level adjusting section 210 is configured by the gate body 212 and the elevating mechanism 220 described above.
The drain plug control device 22B has the same basic structure as the water plug control device 12B described above.

[Synchronization of communication between hydrant control device and field water management server]
The water hydrant control device 12B has a power saving state in which the power consumption of the storage battery 133 is limited, and an operating state in which it is possible to periodically wake up from the power saving state and perform control operations including communication with the field water management server. A faucet power manager 139 is provided to switch between modes of operation. In the power saving state, the period of the internal clock that is the reference for the operation of the CPU becomes shorter than that in the normal operation state, and the operation is stopped except for some timer circuits and interrupt circuits.

As will be described in detail later, the faucet control device 12B switches from the power saving state to the operating state at a wake-up cycle set based on the remaining capacity of the storage battery 133, and in the operative state controls the opening and closing of the faucet 12A. It is configured to communicate with a water management server.

The farm field water management server 34 transmits to the water hydrant control device 12B while the water hydrant control device 12B is in the operating state, and avoids transmission while the water hydrant control device 12B is in the power saving state. to control. This is because the water hydrant control device 12B cannot respond even if a call is made while the water hydrant control device 12B is in the power saving state.

The agricultural field water management server 34 transmits time information as reference time information to each water hydrant control device 12B so that each water hydrant control device 12B can appropriately transmit during the period in which it is in operation, and each water hydrant It is configured to transmit wake-up period setting information based on the remaining capacity of the storage battery transmitted from the control device 12B. As the remaining capacity of the storage battery that defines the wakeup period, it is preferable to use at least the average value of the most recent past multiple times.

Each hydrant control device 12B sets an internal timer as a reference so as to synchronize with the time information transmitted from the field water management server 34, and wakes up at the wake-up cycle transmitted from the field water management server 34. is configured to set a wake-up timer on

[Power supply management of hydrant control device]
The hydrant power management unit 139 includes a voltage detection circuit that detects the voltage of the storage battery 133, a wakeup timer circuit, and a wakeup interrupt circuit. The hydrant power management unit 139 is configured to grasp the remaining capacity of the storage battery 133 based on the voltage of the storage battery 133 detected by the voltage detection circuit, and set the timer value of the wakeup timer circuit based on the remaining capacity. there is

The water tap power management unit 139 sets a timer value in the wakeup timer circuit and executes the sleep command, thereby causing the CPU to shift to the power saving state. After shifting to the power saving state, the timer value set in the timer circuit is counted down. When the timer value becomes zero, an interrupt signal is input from the timer circuit to the wakeup interrupt circuit to wake up the CPU from the sleep state and shift to the normal operation state. The timer value defines the wakeup period.

The hydrant power management unit 139 is configured to variably set the wakeup cycle of the electronic control circuit based on the remaining capacity of the storage battery 133, and when the voltage of the storage battery 133 is sufficiently high, the timer value of the wakeup timer circuit is When the timer value is set to a short value and the voltage of the storage battery 133 is low, the timer value of the wakeup timer circuit is set to a long value to suppress power consumption.

The voltage of the storage battery 133 detected by the voltage detection circuit as described above is transmitted to the field water management server 34 via the communication unit 137, and the remaining capacity of the storage battery provided in each hydrant device 12 is detected by the field water management server 34. is managed so that the timer value of the wakeup timer circuit of each water tap control device 12B is updated based on the remaining capacity of each storage battery.

Furthermore, the field water management server 34 updates the setting information of the wake-up period set in the hydrant power management unit based on the remaining capacity information of the storage battery 133, the sunshine information, or the time information. is preferably configured to

In addition to the remaining capacity of the storage battery 133, it is possible to evaluate the power generation capacity of the solar cell 132 and the charging capacity of the storage battery from the sunshine information. Therefore, a more appropriate wakeup cycle can be set.

For example, even if the remaining capacity of the storage battery 133 is the same, charging by the solar cell 132 cannot be expected if the sunshine conditions are cloudy or at night. If there is, charging by the solar cell 132 can be expected, so the wakeup cycle can be set short.

It is also possible to add seasonal information to the day's weather and time information as sunshine information. Even if the weather and time are the same, the power generation capacity of the solar cell 132 is different between summer and winter, for example. Therefore, it is better to consider seasonal information than to uniformly set the wake-up cycle based on the remaining capacity and sunshine information. It can be set to an appropriate wakeup period.

A machine learning device can be used to find an appropriate wake-up period considering the effects of such multiple variable factors. For example, normalized values of the remaining capacity of the storage battery, time information, sunshine information at that time, seasonal information, and the operating state of the hydrant device and the drain device are used as input values, and the optimum wake-up cycle for the input values is determined. A machine learning device for output values may be used.

0-100% for the remaining capacity of the storage battery, 0-100% for the time information (for example, 100% at noon, 0% from 6:00 pm to 6:00 am, represented by a smooth curve between them), 0-100 for the sunshine information % (for example, 0% at night, 100% clear day, 80% clear, 60% cloudy, 30% rainy), seasonal information 40 to 100% (for example, 100% summer solstice, 40% winter solstice, 70% spring and autumn equinoxes, between 0 and 100% (for example, puddling, rice planting, rooting stage, tillering stage (early stage, late stage), young panicle formation stage to ear emergence and flowering). set between 100% and 0% in the off-season) in descending order of the importance of water level control for each process of rice cultivation such as season and ripening period.

As an algorithm used in the machine learning apparatus, a neural network trained in advance by using a combination of the optimum output values for the above-mentioned input values as a teacher signal can be preferably adopted.

It is also possible to adopt dynamic programming using a graph search algorithm, and it is also possible to use a statistical algorithm using a probability distribution function.

When receiving unplanned remote control information from the remote control terminal 36, the field water management server 34 updates the wake-up cycle setting information set in the hydrant power management unit 139 regardless of the remaining capacity of the storage battery 133. is configured to

When the remaining capacity of the storage battery is low and a long wakeup cycle is set, by setting a shorter wakeup cycle, response delay of the water tap control device 12B due to the wakeup cycle can be avoided.

For example, when a request to open/close a hydrant is transmitted from the remote control terminal 36 to the field water management server 34 as unplanned remote control information different from the planned water supply schedule, the wakeup cycle is shortened in advance. As a result, it is possible to avoid a delay in response to the water tap opening/closing request. The unplanned remote control information is not limited to a hydrant opening/closing request for flooding a field, but includes trial operation of the hydrant device 12 and the like.

In addition, when the storage battery 133 is replaced or when the storage battery 133 is rapidly charged as unplanned remote operation information, the remote control terminal 36 transmits a wake-up cycle reset request to the field water management server 34, and the field water management server 34 may then immediately set the corresponding wake-up period based on the remaining capacity received from the faucet controller 12B. This is because there is a possibility that the wakeup period will not be communicated immediately if it is based on the past average value of remaining capacity received most recently.

In addition, a preliminary request is made from the remote control terminal 36 to the farm field water management server 34 to generate a hydrant opening/closing request. configuration information is preferably sent. Such preliminary requests include wakeup period update requests. When the farm field water management server 34 receives a wakeup cycle update request from the remote control terminal 36, wakeup cycle setting information is sent to the hydrant control device 12B, and a short wakeup cycle is set. It will be possible to quickly respond to requests to open and close water taps.

When the wake-up cycle is set to be short regardless of the remaining capacity of the storage battery 133 in this way, the farm field water management server 34 will turn on the storage battery 133 if no remote control information outside the plan is received from the remote control terminal 36 for a predetermined time. It is configured to reset the wake-up cycle corresponding to the remaining capacity of the battery.

The hydrant power management unit 139 may include an automatic setting unit that automatically sets the wakeup cycle based on the remaining capacity of the storage battery regardless of the wakeup cycle setting information transmitted from the field water management server 34. preferable.

When an abnormal state continues in which the setting information of the wake-up period transmitted from the field water management server 34 does not correspond to the remaining capacity of the storage battery 133, an appropriate operation is performed by setting the wake-up period to an appropriate value by the automatic setting unit. becomes possible. In this case, the faucet control device 12B voluntarily sends a message to that effect to the farm field water management server 34, thereby optimizing the transmission timing from the farm field water management server 34 thereafter.

Similar to the configuration of the hydrant power management unit 139 described above, the drain plug power management unit 239 includes a voltage detection circuit that detects the voltage of the storage battery 233, a wakeup timer circuit, and a wakeup interrupt circuit. The drain plug power management unit 239 is configured to grasp the remaining capacity of the storage battery 233 based on the voltage of the storage battery 233 detected by the voltage detection circuit, and set the timer value of the wakeup timer circuit based on the remaining capacity. there is

Although detailed description is omitted, exchanges similar to exchanges between the field water management server 34 and the hydrant control device 12B regarding the setting of the wakeup cycle are also performed between the field water management server 34 and the drain cock control device 22B. .

At least for the water tap control device 12B and the drain tap control device 22B installed in the same field, it is preferable to unify the wakeup cycle of the one with the smaller remaining capacity of the storage battery. It is possible to prepare an environment in which the field water management server 34 can communicate after both of the drainage water levels wake up.

FIG. 5 shows the procedure of water supply control for the farm field 1 executed by the hydrant control device 12B.
When the water tap control device 12B switches from the power saving state to the normal operation mode (SA1), after measuring the water level and the voltage of the storage battery 133 (SA2), it determines whether or not it is in the flooding control state. If it is in the controlled state (SA3, Y), it is determined whether or not the target water level has been reached, and if the target water level has been reached (SA4, Y), the water tap 12A is closed (SA5). If it is determined in step SA3 that the flooding control state is not in effect, the process proceeds to step SA6.

Next, connection processing with the field water management server 34 is performed (SA6), and control information such as the water level information and the voltage of the storage battery measured in step SA2 and the open/close state of the water tap 12A is transmitted to the field water management server 34. (SA7). Furthermore, upon receiving the reference time information, the wake-up cycle, the control command (opening or closing of the hydrant), and the set water level (water level for constant flooding control) from the field water management server 34, the reference timer is set based on the reference time information. , sets the wake-up timer, and executes the control command (SA8).

When the transmission/reception processing with the field water management server 34 is completed (SA9, Y), after starting the wake-up timer (SA10), the sleep command is executed to shift to the power saving state (SA11). If the transmission/reception processing is not completed (SA9, N), the process returns to the control information transmission processing (SA7).

FIG. 6 shows the procedure of field water supply control executed by the field water management server.
If there is a connection request from each hydrant control device 12B (SB0, Y), the field water management server 34 receives control information such as water level information, storage battery voltage, and open/close state of the hydrant 12A (SB1). . Next, the water supply schedule is checked, and if there is a water supply schedule (SB2, Y), it is determined whether or not the field water level has reached the target water level, and if it has not reached the target water level (SB3, NG). , the target water level setting information is transmitted to the drain plug control device 22B (SB4), and the water supply command is transmitted to the water plug control device 12B (SB5). If it is determined at step SB3 that the target water level has been reached (SB3, OK), a water stop command is transmitted to the hydrant control device 12B (SB6). Note that step SB4 is a command to the corresponding drain plug control device 22B and is not a command to the water tap control device 12B, so it is indicated by a dashed line as a reference step.

Furthermore, the remaining capacity of the corresponding storage battery is evaluated, and if the current wakeup cycle is not appropriate (SB7, NG), an update request to a proper wakeup cycle is transmitted (SB8).

If there is no water supply schedule in step SB2 and an unplanned operation command is issued (SB9, Y), a request for updating to a predetermined wakeup cycle shorter than the current wakeup cycle is transmitted (SB10). If the remaining capacity of the storage battery is sufficient and the shortest wakeup period is set, that state is maintained.

Each water tap device 12 and drain tap device 22 can be connected to the field water management server 34 without any particular limitation as long as the communication medium has low power consumption and low communication cost. For example, cellular LPWA (LTE-M), which enables wide-area communication with low power consumption, etc., can be preferably used. It is also possible to install a repeater such as a wireless router near the field and connect to the Internet via the repeater. A gateway may be used to interpose a plurality of communication media.

In the above-described embodiment, the case where the water tap device 12B and the water tap device 22B are installed in the farm field 1 has been described, but only the water tap control device 12B is installed in the farm field 1, and the weir body of the water tap 22A is manually operated. In the case of a mode in which the drain water level (storage water level) is adjusted by operating up and down, only the faucet control device 12B is subject to wake-up period setting.

In the above-described embodiment, a mode in which the timer value of the wake-up timer circuit is updated by the agricultural field water management server 34 has been described. may be configured to set In this case, it may be configured to voluntarily communicate with the field water management server 34 after waking up. If the wake-up period is transmitted to the farm field water management server 34 at that time, then communication can be started from the farm field water management server 34 to the water tap control device 12B after the wake-up.

In the above-described embodiment, the faucet device 12 and the drain plug device 22B provided with solar cells for charging storage batteries have been described, but the present invention can also be applied to a case in which only storage batteries are provided without solar cells. It goes without saying that we can.

A specific configuration of the wakeup circuit is not particularly limited, and a known technique may be used. It may be built in the CPU or may be provided outside the CPU.

As in the above-described embodiment, when setting the reference internal timer so that each water hydrant control device 12B synchronizes with the time information transmitted from the field water management server 34, water supply including the water supply start time is performed in advance. If a command is transmitted to each hydrant control device 12B, each hydrant control device 12B can spontaneously start water supply at the corresponding time. In this case, it is preferable to transmit information indicating that water supply has started when communicating with the farm field water management server 34 after that, in order to confirm the operation.

The above-described embodiments are merely examples of the present invention, and are not intended to limit the technical scope of the present invention. It goes without saying that the physical configuration can be changed and designed as appropriate within the range in which the effects of the present invention are exhibited.

100: Field water management system 1: Field 2: Water level sensor 10: Water supply pipe 12: Water tap device 12A: Water tap device 12B: Water tap control device 20: Drainage channel 22: Drain tap device 22A: Drain tap 22B: Drain tap control Device 34: Field water management server 132: Solar cell 133: Storage battery 135: Electronic control circuit (control panel)
136: Water supply control unit 137: Communication unit 139: Water hydrant power management unit 140: Actuator

Claims (6)

a water tap;
an electronic control circuit having an actuator that operates the water hydrant, a water supply control unit that controls the actuator, and a communication unit that communicates with a field water management server; and a storage battery that supplies power to the electronic control circuit and the actuator, a water tap control device for supplying irrigation water from the water tap to the field;
a remote control terminal for setting and inputting remote control information for the hydrant control device;
a field water management server that receives the remote control information from the remote control terminal and remotely controls the corresponding hydrant control device;
A field water management system comprising:
The electronic control circuit has a power saving state in which the power consumption of the storage battery is limited, and an operating state in which it is possible to periodically wake up from the power saving state and execute a control operation including communication with the field water management server. Equipped with a faucet power management unit that switches operating modes between
The hydrant power management unit is configured to variably set a wake-up cycle of the electronic control circuit based on the remaining capacity of the storage battery ,
The field water management server is configured to update setting information of the wake-up cycle of the water tap power management unit based on the remaining capacity of the storage battery transmitted from the water tap control device,
The hydrant power management unit includes an automatic setting unit that automatically sets the wakeup cycle based on the remaining capacity of the storage battery, regardless of the wakeup cycle setting information transmitted from the field water management server. field water management system. The hydrant control device further includes a solar cell that charges the storage battery,
The field water management server updates the setting information of the wake-up period set in the hydrant power management unit based on information on either sunshine information or time information in addition to information on the remaining capacity of the storage battery. The farm field water management system according to claim 1 , wherein When receiving unplanned remote control information from the remote control terminal, the field water management server changes the setting information of the wake-up cycle set in the hydrant power management unit regardless of the remaining capacity of the storage battery. Field water management system according to claim 1 or 2 , adapted for updating. 4. The agricultural field water management system according to claim 3 , wherein the unplanned remote control information includes a hydrant opening/closing request or a wakeup cycle update request. 5. The field water management server according to any one of claims 1 to 4 , wherein the water hydrant control device transmits time information, and the water hydrant power management unit sets the wake-up cycle and time based on the time information. field water management system. an electronic control circuit having an actuator that operates the water hydrant, a water supply control unit that controls the actuator, and a communication unit that communicates with a field water management server; and a storage battery that supplies power to the electronic control circuit and the actuator, A water tap control device for use in an agricultural field water management system according to any one of claims 1 to 5 , wherein the water tap supplies irrigation water to the field,
The electronic control circuit has a power saving state that limits the power consumption of the storage battery, and an operating state that periodically wakes up from the power saving state and can execute control operations including communication with the field water management server. , with a faucet power management unit that switches between
The hydrant power management unit is configured to variably set a wake-up cycle based on the remaining capacity of the storage battery ,
The water hydrant power management unit is configured to shift to the power saving state when there is no access from the agricultural field water management server within a predetermined time after shifting to the operating state. .

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