JP7304803B2 - 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 Document 1 discloses a hydrant control device that includes a hydrant installed in a field and provided with a displacement mechanism for controlling water supply to the field, and an actuator that operates the displacement mechanism provided in the hydrant. ing. By using such a water tap, it becomes possible to remotely control the water supply to the field via the field water management server.

The water hydrant control device is detachably attached to the water hydrant, and includes an actuator for operating the water hydrant, a water supply control unit for controlling the actuator, and a communication unit for communicating with the field water management server.

JP 2017-193914 A

Since the water hydrant control device described above is configured to be detachable from the water hydrant installed in each field, for example, in a heavy snowfall area, in order to avoid failure of the water hydrant control device, each water supply The faucet control device is removed from the faucet, stored indoors, and the faucet control device is reattached to each faucet just before the busy farming season.

However, since the same hydrant control device as the previous one is not necessarily attached to the hydrant installed in each field, it is a complicated task to adjust the control characteristics of the hydrant control device according to the characteristics of each hydrant. was required for each hydrant.

Specifically, when performing valve opening control of the water supply valve incorporated in the water hydrant, the valve opening is controlled to be suitable for the attached water hydrant, and when performing valve closing control, the attached water hydrant It was necessary to control the water stop state suitable for water, and adjustment work was required for that purpose.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an agricultural field water management system and a hydrant control device in which past data of a field are continuously taken over even if the hydrant control device installed in the field is replaced with the previous year. It is in the point to do.

In order to achieve the above object, the first characteristic configuration of the agricultural field water management system according to the present invention comprises: a hydrant installed in a field; and an actuator detachably attached to the hydrant for operating the hydrant. a water supply control unit for controlling the actuator; a communication unit for communicating with a field water management server; and a water hydrant control device for remotely controlling the water hydrant control device. In the water management system, the water hydrant control device is provided with unique ID information and has a position information acquisition unit, and the communication unit transmits the position information and the ID information acquired by the position information acquisition unit to the farm field. The field water management server is configured to transmit to a water management server, and the field water management server includes map information indicating the positions of a plurality of fields, position information of water taps installed in each field, and characteristic information of each water tap. An agricultural field map management unit that manages attribute information as agricultural field map information is provided, and the agricultural field map management unit is attached to the water hydrant control device and the water hydrant control device based on the position information transmitted from the water hydrant control device. It is in that it is comprised so that the said farm field map information may be linked|related and the water tap which was made may be updated .

Unique ID information is attached to the water hydrant control device, and the position information and the ID information acquired by the position information acquisition unit are transmitted to the field water management server. It is identified and the installation position becomes known.

The field map management unit provided in the field water management server grasps each field and the water hydrant installed in each field based on the field map information, and transmits from the water hydrant control device attached to one of the water hydrants Based on the obtained position information, update processing of the field map information associated with the field in which the water hydrant control device is installed and the water hydrant of the field is performed. As a result, it is possible to grasp the faucet and the field to which each faucet control device with a unique ID is attached.

In the second characteristic configuration, in addition to the above-described first characteristic configuration, the agricultural field water management server controls the water supply to which the water hydrant control device is attached based on the position information transmitted from the water hydrant control device. The attribute information including the characteristic information of the tap is read out from the field map information and transmitted to the hydrant control device.

Attribute information including characteristic information about the hydrant to which each hydrant control device is attached is read from the field map information and sent to the corresponding hydrant control device, so that the hydrant control device can determine what characteristics can be appropriately controlled based on the attribute information transmitted from the field water management server.

In the third characteristic configuration, in addition to the first or second characteristic configuration described above, attribute information is included in the attribute information, and the field water management server receives position information transmitted from the water tap control device. and, based on the ID information, it is determined whether or not the hydrant control device is attached to the proper hydrant of the field.

The water tap to which the water tap control device is attached is grasped based on the position information transmitted from the water tap control device, and the water tap control device is based on the ID information and the attribute information of the water tap transmitted from the water tap control device. is attached to the correct field hydrant.

In addition to any one of the above-described first to third characteristic configurations, the fourth characteristic configuration includes, in addition to the attribute information, the pressure characteristics of the water hydrant, the water reduction depth characteristics of the field, and the degree of opening of the water hydrant information, shut-off torque information of the water faucet, or overload current information of the actuator.

The faucet control device can appropriately control the attached faucet based on these attribute information. For example, it is possible to adjust the appropriate valve opening when the valve is open based on the pressure characteristics of the hydrant, adjust the target water level in the field based on the characteristics of the water reduction depth in the field, and adjust the actuator based on the opening information of the hydrant. is determined, the water shut-off position is determined based on the shut-off torque information of the water faucet, and abnormality diagnosis etc. can be performed based on the overload current information of the actuator.

The fifth characteristic configuration is that, in addition to the above-described first characteristic configuration, the position information acquiring section is equipped with a satellite receiver capable of using a satellite positioning system.

By using a satellite receiver that can use a satellite positioning system as the position information acquisition unit, position information can be acquired simply.

A first characteristic configuration of a water hydrant control device according to the present invention is used in an agricultural field water management system having any one of the first to fifth characteristic configurations described above, and is detachable from the water hydrant installed in a field. and includes the actuator that operates the water tap, the water supply control unit that controls the actuator, the communication unit that communicates with the agricultural field water management server, and the location information acquisition unit. In the water hydrant control device in which ID information is set, the communication unit transmits the position information acquired by the position information acquisition unit and the ID information to the agricultural field water management server when the device is initially attached to the water hydrant. The point is that it is configured as follows.

In the second characteristic configuration, in addition to the above-described first characteristic configuration, the water supply control unit transmits from the farm field water management server in response to transmission of the position information and the ID information by the communication unit. The actuator is controlled based on attribute information including characteristic information of the water faucet.

As described above, according to the present invention, there is provided an agricultural field water management system and a hydrant control device in which past data of a field are continuously taken over even if the hydrant control device installed in a field is replaced with that of the previous year. It became possible.

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 Illustration of irrigation water equipment Explanatory diagram of data registered in the field database Flowchart showing the procedure of hydrant initialization processing executed by the hydrant control device Flowchart showing the procedure of hydrant initialization processing executed by the field water management server

A field water management system and a hydrant control device according to the present invention will be described below. Here, an example in which a control unit is provided on the drain cock side in addition to the control unit on the water tap side will be described.
[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 a repeater 32 for relaying connection with the Internet 30 is installed in the vicinity of the field 1 . Further, 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 and 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 at the same time, so it is necessary to manage the water supply efficiently 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 .

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 to register the water supply schedule in the field database DB provided in the field water management server 34 . Note that the notation "ID" used in the following description means an identification symbol that can uniquely identify each.

The farm field water management server 34 is provided with a farm field map management section, and the farm field map management section performs data registration and update processing of the farm field database DB. As will be described in detail later, in the field database DB, together with a field map, a field ID is assigned to each field specified by the field map. A drain plug ID, a field manager ID, and the like are registered in association with the field ID.

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 specified in the water supply schedule stored in the farm field database DB, A water supply command is output to the hydrant 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 is an example of 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, and a position information acquisition unit. A GPS receiver 238 and a storage unit 239 are provided, and the storage unit 239 stores ID information (drainage plug control device ID) for uniquely identifying the drainage plug control device 22B.

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 GPS that is an example of a position information acquisition unit. A receiver 138 and a storage unit 139 are provided, and the storage unit 139 stores ID information (water supply valve control device ID) for uniquely identifying the water supply valve control device 12B.

[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 hydrant control device 12B includes a watertight casing 131, a solar panel 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 valve water supply control unit 136 functioning as a water supply control unit, a communication unit 137, a GPS receiver 138, a storage unit 139, 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.

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 instructed to suck water from the agricultural field water management server 34 via the communication unit 137, and controls the water level sensor. 2, the valve mechanism is closed when it is detected that the field water level has reached the target reservoir water level.

Electric power generated by the solar panel 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.

[Configuration of field map]
FIG. 5 illustrates an irrigation water facility. The irrigation water facility is a water supply facility for supplying irrigation water taken from a water source pond 330 such as a river or a lake to each farm field 1 through a water distribution reservoir 321, and the water distribution reservoir 321 and each farm field 1 are main lines. The water supply pipe 320 and the water supply pipes 300 and 10 serving as branch lines are connected.

The water distribution reservoir 321 is a facility for storing irrigation water to be supplied to each farm field group FG, and the irrigation water is pumped up by the pump of the water pump station 331 provided in the water source reservoir 330 to maintain a constant water level. A water supply pipe 320 is connected to a water distribution port of the water distribution reservoir 321, and pumped irrigation water is pumped by water pressure.

The main water supply pipe 320 is branched from the distribution reservoir 321 toward each field group FG, and a water diversion device 340 is provided that functions as a water diversion work for adjusting the amount of water supplied to each of the branched water supply pipes 300. It is That is, the irrigation water pressure-fed from the water distribution reservoir 321 is supplied to each field group FG after the amount of water supply is adjusted by the water distribution device 340 .

A water supply pipe 300 serving as a branch line is also branched toward each farm field 1 , and a water tap device 12 having a water tap 12B for supplying water to each farm field 1 is connected to the branched water supply pipe 10 . Each farm field 1 is provided with a drain plug device 22 having a drain plug 22B, and a drainage channel 20 is provided so that water discharged from each farm field 1 through the drain plug device 22 is discharged into a river. .

The field map is a field map indicating the specific position of each field 1 described above, and each field 1 on the map is set with a uniquely identifiable field ID. Detailed attributes of the field ID attached to the field map are registered in the field database DB.

FIG. 6 shows the data structure registered in the field database DB. The field database DB includes an administrator record that identifies each administrator, a field record that identifies each field, a hydrant record that identifies each hydrant, a hydrant control device record that identifies each hydrant control device, and each drain valve. and a drain plug control device record specifying each drain plug control device.

The manager record stores manager information for each field, and includes field data indicating attributes such as manager ID, name, address, telephone number, e-mail address, and single or multiple field IDs to be managed.

The field record includes field data indicating attributes such as field ID, field address, manager ID, hydrant ID, drain tap ID, hydrant controller ID, and drain tap controller ID. In other words, the water tap, the water tap, the water tap control device, the water tap control device, etc. installed in the field identified by the field ID are uniquely identified.

The hydrant record has field data indicating attributes such as hydrant ID, field ID, administrator ID, model, manufacturer, and hydrant characteristics. The water tap characteristics include information on the degree of opening of the water supply valve, that is, the number of pulses of the encoder (built into the DC motor 141) that defines the fully open position, and the motor current value and the encoder that indicate the fully closed position, which is shutoff torque information of the water supply valve. , the pressure characteristics of the hydrant, the water depth characteristics of the field, and the overload current information of the actuator. Instead of the number of pulses of the encoder, the number of rotations and the direction of rotation of the motor may be specified.

The position where the motor current value is driven to the value indicating the fully closed position is set as the initial position, and the fully open position is defined by the number of encoder pulses. The motor is driven to the position where the number is subtracted to zero. The same applies when the number of rotations of the motor is used instead of the number of pulses of the encoder. In response to deterioration of the seal member 123, etc., when the motor current value indicating the fully closed position reaches a predetermined value, it is determined that the predetermined cutoff torque has been reached, and the motor is stopped, and thereafter the position is changed to the fully open position. can be corrected with In this case, these characteristic values are transmitted from the hydrant control device 12B to the field water management server 34 to update the hydrant characteristics.

The hydrant control device record has field data indicating attributes such as a hydrant control device ID, field ID, administrator ID, model, manufacturer, and device attributes. The device attributes include the model, manufacturer, remaining capacity (here, no-load voltage value) of the power storage device provided in the hydrant controller, and location information received by the GPS receiver provided in the hydrant controller. included.

The drain plug record includes field data such as drain plug ID, field ID, manager ID, model, manufacturer, and set water level. The drain plug control device record includes field data indicating attributes such as a drain plug control device ID, field ID, administrator ID, model, manufacturer, type of power storage device provided in the drain plug control device, manufacturer, and device attributes. . The device attributes include the model, manufacturer, remaining capacity (here, no-load voltage value) of the power storage device provided in the drain plug control device, and location information received by the GPS receiver provided in the drain plug control device. included.

When the cultivation season arrives, the water tap control device 12B and the drain tap control device 22B stored indoors in winter are attached to the water tap 12A and the drain tap 22A provided in each field 1, and power supply is started from the storage battery. Then, the faucet control device 12B and the drain plug control device 22B are activated and start communicating with the field water management server 21 . A series of processing at this time is called initialization processing.

The communication unit 137 of the hydrant control device 12B transmits the location information and the hydrant control device ID captured by the GPS receiver 138 to the field water management server 34 . Based on the position information transmitted from the water tap control device 12B, the farm field map management unit updates the farm field map information by associating the water tap control device 12B and the water tap 12A to which the water tap control device 12B is mounted.

The field map management unit collates the position information (latitude and longitude information captured by the GPS receiver) transmitted from the water hydrant control device 12B with the address of the field 1, and the water hydrant control device 12B is installed. The water tap 12A is specified, the ID of the water tap control device 12B is registered in the field of the water tap 12A, and the ID of the water tap 12A is registered in the field of the water tap control device 12B.

Thereby, the water tap 12A installed in each field 1 and the water tap control device 12B are associated. For example, position information (latitude and longitude information) obtained from the address of field 1 using a Geographic Information System (GIS) and position information (latitude and longitude information) transmitted from the hydrant control device 12B. , it can be determined that the water tap control device 12B is attached to the water tap 12A of the field 1 closest to the distance. If the position information (latitude and longitude) of the hydrant 12A is registered in advance as field data of the hydrant record in the database, collation becomes easier.

The farm field water management server 34 reads attribute information including characteristic information of the water tap 12A to which the water tap control device 12B is attached based on the position information transmitted from the water tap control device 12B from the field map information, and controls the water tap. Send to device 12B.

The water tap control device 12B can appropriately control the water tap 12A installed based on these attribute information, and even if the water tap control device 12B installed in the field is replaced with the previous year, the field can be continuously controlled. Past data will be carried over. For example, it is possible to adjust the appropriate valve opening at the time of valve opening based on the pressure characteristics of the water hydrant, adjust the target water level etc. of the field based on the water reduction depth characteristics of the field, and adjust the opening degree information of the water hydrant 12A. The control amount of the actuator is determined, the water stop position is determined based on the shut-off torque information of the water tap 12A, and abnormality diagnosis etc. can be performed based on the overload current information of the actuator.

The attribute information of the water hydrant control device 12B includes attribute information, that is, the administrator ID, and the farm field water management server 34 controls the water hydrant based on the position information and the water hydrant control device ID information transmitted from the water hydrant control device 12B. The device 12B is configured to determine whether it is attached to the water tap 12A of the proper field 1, and when it is attached to the water tap 12A of the inappropriate field 1, the water tap control device 12B It is configured to notify the administrator using e-mail or the like.

For example, when the water hydrant control device 12B is mistakenly attached to the water hydrant 12A of a different field managed by a different administrator, it can be dealt with appropriately. Security can be enhanced in response to a case where the water tap 12A in the field of three parties is installed.

FIG. 7 shows the procedure of initialization processing executed when the water tap 12A is turned on, and FIG. 8 shows the procedure of the field water management server 34 at that time.

After that, the farm field water management server 34 outputs a drainage water level adjustment command to the drain plug control device 22B of the corresponding farm field 1 at the water supply date and time determined in the water supply schedule stored in the farm field database DB, A water supply command is output to the hydrant control device 12B of the field 1 to flood each field 1 with water.

In the above example, the faucet device 12 and the drain plug device 22 are connected to the Internet via the repeater 32. It may be configured by a terminal connectable to a mobile phone line and configured to be directly connectable to the Internet.

Further, a plurality of farm fields are grouped, and the communication units 137 and 237 provided in the hydrant device 12B and the drain valve device 22B are configured by communication devices that perform communication based on the specified low-power radio, and one communication device serving as a parent device is used. A device and a child device communicate wirelessly with each other, and a communication device that can connect to the Internet provided in the parent device collectively collects water level information from the child device, etc., to a cloud server. may be configured to transmit to

Since the initialization process for the drain plug control device 22B is also performed in the same manner as described above, description thereof will be omitted. In some cases, the drain plug device 22 for manually setting the drain water level by the drain plug 22A is used without providing the drain plug control device 22B in the field water management system 100. In that case, the drain plug control device 22B is used. No initialization processing is performed for

In the above description, an example in which the position information acquisition unit is configured with a GPS receiver has been described, but the position information acquisition unit may be configured with a satellite receiver that can use a satellite positioning system. A satellite receiver other than the receiver may be used.

For example, as a GNSS (Global Navigation Satellite System) other than the GPS (Global Positioning System), a satellite receiver using a satellite positioning system such as Galileo, GLONASS, BDS, etc., currently in operation or scheduled to be in operation in the future. can be adopted. Furthermore, it is also possible to employ a satellite receiver using a regional satellite system such as QZSS (Quasi-Zenith Satellite System).

When a satellite positioning system is used as the position information acquisition unit, one receiver receives radio waves from four or more satellites at the same time, calculates the distance from each satellite and performs positioning, and multiple receivers. Relative positioning or the like, in which four or more satellites are simultaneously observed by the receiver and the relative positional relationship between the receivers is measured, can be adopted as appropriate. In the case of adopting relative positioning, it is desirable that at least one receiver be placed in a facility near a field whose position information is known.

It is also possible to employ a receiver using any method other than the satellite positioning system, for example, an arbitrary method of positioning using radio, as the position information acquisition unit. For example, Wi-Fi positioning, RFID positioning, Bluetooth positioning, and the like.

In the above-described embodiment, when a satellite receiver such as a GPS receiver is used as the position information acquisition unit, if satellite radio waves cannot be properly received or if there is a large error in the captured position information, the field map information cannot be updated, and the system may not operate properly. Also, it may be difficult to purchase an expensive satellite receiver.

In preparation for such a case, when a certain hydrant control device 12B is attached to a certain hydrant 12B, the farm field water management server 34 is accessed via a mobile terminal 36 such as a smartphone owned by the manager of the farm field 1. , ID information (water faucet controller ID) for uniquely identifying the water faucet 12A is registered so as to be associated with the water faucet ID of the water faucet 12B registered in the field database of the field water management server 34. can be configured to

In the hydrant record, field data such as a hydrant ID that uniquely identifies the hydrant and position information including the longitude and latitude indicating the installation position of the hydrant may be registered in advance. It is sufficient to convert the management system based on hydrant IDs into a management system based on hydrant IDs. The same applies to the drain plug control device 22B.

Information on relocation is provided from the operation time of the actuator. It is possible to suppress the replacement frequency of the provided actuator, extend the maintenance period, and reduce the management cost.

For example, for each hydrant control device attached to a hydrant, the farm field database DB is configured to manage actual operation data such as the cumulative operating time and the cumulative number of opening/closing operations of the actuator. A water faucet control device in which the cumulative operating time of the actuator is relatively long or the cumulative number of times of opening and closing is relatively large just before the busy farming season, and a water faucet control device in which the cumulative operating time of the actuator is relatively short or the cumulative number of times of opening and closing is relatively small. It is possible to reduce the management cost by replacing the water faucet to be installed between them.

Furthermore, based on the position information of each hydrant, the load factor (weighting factor) for the hydrant connected to the upstream side of the water supply pipe is set larger than the load factor (weighting factor) for the hydrant installed on the downstream side. Alternatively, the faucet control device to be attached to each faucet may be determined based on weighted operation record data obtained by multiplying the operation record data of the faucet control device attached to each faucet by a load factor (weighting coefficient).

In addition to arranging the operation performance data of the water hydrant control devices evenly, some water hydrant control devices are preferentially arranged for water taps with severe usage environments, and these water hydrant control devices and The replacement timing and maintenance period of the actuator may be set to values different from those of the faucet control device other than the above.

When arranging so that the operation record data of the hydrant control device is even, or when preferentially arranging some hydrant control devices to hydrants with severe usage environments, which hydrant control device is assigned to which hydrant A machine learning device can be used to determine whether it is appropriate to wear the

For example, for each hydrant control device specified by the hydrant control device ID, a value obtained by normalizing a plurality of operation performance data such as the cumulative operating time of the actuator and the cumulative number of times of opening and closing, and the water supply specified by the hydrant ID A load factor (weight factor) set for each faucet is determined, and when an arbitrary faucet control device and faucet are combined, the product of the cumulative operating time over a predetermined period in the past and the load factor (weight factor) Construct a machine learning device that takes as input the sum calculation value and/or the product sum calculation value of the cumulative number of times of opening and closing and the load factor (weighting factor), and outputs the failure occurrence time or failure rate, and based on the result A faucet to which each faucet control is installed can be determined.

For example, each faucet control device according to the purpose, such as a combination for arranging operation performance data evenly or a combination that preferentially arranges some faucet control devices for faucets with severe usage environments You can decide which faucet to put on.

Algorithms used in machine learning devices include One-Class Support Vector Machine, LOF (local outlier factor) method, and IF (Isolation Forest), which predicts the occurrence of abnormalities due to specific combinations. algorithm, RC (Robust Covariance) method, etc. can be used.

Hydrant control specified by normalized data such as the cumulative operation time of the actuator and the cumulative number of times the actuator is opened and closed when past operation data and maintenance data are accumulated for the combination of the faucet control device and the faucet. A combination for arranging operation performance data evenly with an input layer for inputting a device and a hydrant specified by an individual load factor (weight coefficient), a single or multiple intermediate layers, and Alternatively, construct a neural network whose output layer is a combination of preferentially placing some water hydrant control devices in water hydrants with severe usage environments, and use maintenance data obtained when past operation record data is input. It is possible to use a machine learning device that learns with a teacher signal as an output.

The embodiment described above is merely an example of the present invention, and the description is not intended to limit the technical scope of the present invention. It goes without saying that the specific configuration such as the configuration of each record registered in the DB 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 32: Repeater 30: Internet 34: Field water management server

Claims (7)

A water tap installed in the field,
a water faucet control device detachably attached to the water faucet and having an actuator for operating the water faucet, a water supply control section for controlling the actuator, and a communication section for communicating with a field water management server;
a field water management server that remotely controls the hydrant control device;
A field water management system comprising:
The water hydrant control device is provided with unique ID information and has a position information acquisition unit, and the communication unit transmits the position information acquired by the position information acquisition unit and the ID information to the agricultural field water management server. configured to
The farm field water management server manages, as farm field map information, attribute information including map information indicating the positions of a plurality of farm fields, position information of water hydrants installed in each farm field, and characteristic information of each water hydrant. Equipped with a management department,
The agricultural field map management unit updates the agricultural field map information by associating the hydrant control device and the hydrant to which the hydrant control device is mounted based on the position information transmitted from the hydrant control device. A field water management system that consists of The farm field water management server reads attribute information including characteristic information of the water tap to which the water tap control device is attached from the field map information based on the position information transmitted from the water tap control device, and The agricultural field water management system according to claim 1 , wherein the information is transmitted to the control device. The attribute information includes attribution information, and the field water management server determines whether the water hydrant control device is attached to an appropriate water hydrant in the field based on the position information and the ID information transmitted from the water hydrant control device. 3. The agricultural field water management system according to claim 1 or 2 , which is configured to determine whether or not there is water. The attribute information includes any one of pressure characteristics of the hydrant, water depth characteristics of the field, opening information of the hydrant, closing torque information of the hydrant, and overload current information of the actuator. 4. A field water management system according to any one of 1 to 3 . 2. The field water management system according to claim 1, wherein said positional information acquiring unit comprises a satellite receiver capable of using a satellite positioning system. It is used in the agricultural field water management system according to any one of claims 1 to 5 , and is detachably attached to the water hydrant installed in the field, and the actuator that operates the water hydrant, and the actuator that controls the actuator . A water faucet control device having a water supply control unit, the communication unit communicating with the agricultural field water management server, and the position information acquisition unit, and in which unique ID information is set,
The faucet control device , wherein the communication unit is configured to transmit the position information and the ID information acquired by the position information acquisition unit to the agricultural field water management server when the faucet is initially attached to the faucet . The water supply control unit controls the actuator based on attribute information including characteristic information of the water tap transmitted from the farm field water management server in response to transmission of the position information and the ID information by the communication unit. 7. The water tap control device according to claim 6 , which is configured as follows.

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