JP3343822B2 - Unmanned automatic watering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an irrigation operation in which a working vehicle reciprocates between a plurality of furrows in a horticultural house or a vegetable field of ridge cultivation to perform irrigation work. Related to the technology to do.

[0002]

2. Description of the Related Art Conventionally, a vehicle is traveled forward in a furrow after getting off from a lateral transport vehicle, and stops automatically when it reaches an edge of the furrow, travels backward, and is mounted again on the lateral transport vehicle and moves from the furrow to the furrow. A self-propelled work vehicle that absorbs chemicals or water in a tank with a power sprayer, types of crops that are grown by pressing,
An irrigation device configured to spray according to growth is known. The work vehicle is driven by a drive motor, and has a built-in hose winding device that feeds out and winds up a spraying hose, and the hose winding device includes:
The spray hose is configured to be extended during forward running and wound up during reverse running. Further, the horizontal transport vehicle is configured to move on the transport rail and stop at each ridge.

[0003]

However, in the above-mentioned prior art, the forward and backward traveling of the work vehicle and the movement of the horizontal transport trolley are interlocked. A start operation is required, and after the spraying operation is completed, it is necessary to manually return the horizontal transport vehicle on which the work vehicle is mounted to the operation start position, which is troublesome and troublesome. In order to save labor, there is a demand for an irrigation apparatus that automatically performs a spraying operation at a predetermined time. Therefore, according to the present invention, when the preset spraying work start time comes, the work vehicle automatically travels back and forth, and starts the spraying work performed by being mounted and moved on the horizontal transport vehicle,
An object of the present invention is to configure an automatic irrigation apparatus that automatically stops spraying work when a water supply abnormality occurs. Ma
In addition, when spraying work is automatically performed
When a water supply abnormality occurs due to the source being detached, etc.
To stop spraying work automatically in order to stabilize work
Need to do that .

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. In claim 1, the vehicle gets off the carrier and advances in the furrow, and when reaching the furrow end, reverses and reverses,
In the irrigation device, which is again mounted on the horizontal transport carriage and moves to the next ridge, the liquid in the tank is absorbed by the water supply pump, pressurized and sprayed, the water supply pump and the control panel are connected, and the control is performed. A timer is provided on the panel, irrigation work is started at the time set by the timer, and the work vehicle continuously repeats forward travel, reverse travel, and lateral movement from the work start position by a number of rows of ridges, and ends the work. It reaches the position, unmanned automatic, which is a work vehicle stops with automatically return to work starting position
In the watering device, at the time set by the timer,
Drive the water pump to transfer the liquid in the tank to the work vehicle
And a connection hose part connected to the spray nozzle of the work vehicle.
A pressure switch is provided, and the sprinkling pressure of the connection hose is set to the set pressure.
The work vehicle is turned on and the irrigation work automatically starts.
It is started . In claim 2, claim 1
Water pressure of the connecting hose in the unattended automatic watering device
Automatically lowers the set pressure to allow watering.
It is configured to stop .

[0005]

Next, the operation will be described. When performing watering work by fully automatic operation with an unmanned automatic watering apparatus, the watering work vehicle A is mounted on the horizontal transport vehicle B in advance and arranged at the entrance of the travel rail 23 between the furrows at the work start position, and the control is performed. The main power supply 2 of the panel 1 is turned on (1), the timer 4 is operated to set a predetermined water supply start time (work start time) (2), and the fully automatic switch 5 is turned on. Then, when the timer 4 reaches the set time (4), the water level sensor 9 detects whether or not the water (or chemical solution) in the tank T is at the set water level (5). The water is supplied to the tank T by driving (6), and when the set water level is reached, the water level switch of the water level sensor 9 is turned on (7), and the water pump 10 is started (8). When the water level in the tank T is at the set water level, it is determined that the water level switch of the water level sensor 9 is ON, and the water supply pump 10 is started without the water supply step (6) (8).

When water is absorbed, pressurized and discharged by the water supply pump 10 and the water supply pressure of the water supply hose 22 increases to a set pressure at which water can be supplied, the first pressure switch 11 and the second pressure switch 12 are turned on. (9) Then, the irrigation work vehicle A
When the sprinkling pressure of the connection hose 36 rises to the set pressure at which water can be sprinkled, the third pressure switch 13 and the fourth pressure switch 14 are turned on (10), and the controller 18 of the irrigation work vehicle A is turned on (11). The watering valve 15 is opened, and watering from the spraying nozzle 20 is started (12). By spraying water from the spray nozzle 20, the spray pressure of the connection hose 36 drops below the set pressure, and the third pressure switch 13 is turned off (13).
Water pressure drops below the set pressure and the first pressure switch 11
Is turned OFF (14), the drive motor 16 of the watering work vehicle A is operated, and automatic watering by the watering work vehicle A is started (15).

Then, the irrigation work vehicle A repeats forward traveling, backward traveling, and lateral traveling from the work starting position continuously by the number of traveling rails 23, 23,. When it is mounted on the horizontal transport cart B at the position and stopped, it automatically returns to the work start position and the driving motor 16 is turned off (16), and the watering valve 15
Is closed to stop watering (17), the watering pressure of the connection hose 36 rises to the set pressure, the third pressure switch 13 is turned on (18), and the controller 18 of the irrigation work vehicle A is turned off (19). . Subsequently, the water supply pressure of the water supply hose 22 rises to the set pressure, the first pressure switch 11 is turned on (20), the water supply pump 10 stops (21), and the water supply pump 7 stops (22). Hereinafter, when the fully automatic operation is to be continued, the state may be left as it is, and when the set time comes, the same automatic operation as described above is repeatedly performed. To stop the fully automatic operation, the fully automatic switch 5 may be turned off.

[0008] In the automatic watering apparatus,
If a water supply abnormality occurs (24) due to a shortage of water in the tank T or a failure of the water supply pump after the water supply pump is started (8), the first pressure switch 11 of the water supply hose 22 is turned off.
In the state of FF (25), the water supply pressure is the first pressure switch 1
1 does not rise to the set pressure at which it turns on, for example, 1
If it does not rise even after 0 minutes, the water pump 10 is stopped (26), and the pressure abnormality lamp 19 of the control panel 1 is turned on (27). Also, automatic watering of the irrigation work vehicle A started (1
5) Later, if a water supply abnormality occurs (28) due to disconnection of the hose of the spray hose 21 or breakage of the hose (28), the water supply pressure decreases to the set pressure at which the second pressure switch of the water supply hose 22 is turned off. (29), the water pump 10 is stopped (26), and the pressure abnormality lamp 19 of the control panel 1 is turned on (27). When the watering pressure drops to the set pressure at which the fourth pressure switch 14 of the connection hose 36 is turned off (3)
0), the irrigation work vehicle A is stopped (31), and the watering valve 15
Is closed and watering stops (32). Then, the water supply returns to a normal state (33), and when the watering pressure rises to a set pressure at which watering can be performed, the third pressure switch 13 and the fourth pressure switch 14 are turned on (34), and the watering valve 15 is opened. Then, watering is restarted (35), and automatic watering of the watering work vehicle A is continuously performed (36).

[0009]

Next, an embodiment will be described. FIG. 1 is a perspective view showing a working state of the watering work vehicle A, FIG.
FIG. 3 is a control block diagram showing an embodiment of the present invention.
Fig. 5 is a diagram showing an operation control procedure of fully automatic operation, Fig. 5 is a diagram showing a control procedure when a water supply abnormality occurs after the water pump 10 is started, and Fig. 6 is a water supply abnormality after the automatic watering of the irrigation work vehicle A starts. FIG. 7 is a diagram showing a control procedure in the case where the occurrence of the error occurs. FIG. 7 is a view showing an operation procedure of the manual operation.

In FIG. 1, FIG. 2, and FIG.
The configuration of the unmanned automatic irrigation device of the present invention, which comprises a horizontal transport cart B and the like, will be described. Irrigation work vehicle A is transport rail 2
The vehicle is mounted on a lateral transport vehicle B that travels while being pulled by the first winch W1 on the 4.24 and moves laterally, and gets off from the lateral transport vehicle B stopped at the entrance of the travel rail 23 between the ridges. Then, the water (or chemical solution) in the tank T, which is absorbed and pressurized by the water supply pump 10 while traveling back and forth on the traveling rails 23, is laterally transferred to the front of the irrigation work vehicle A via the spray hose 21 or the like. It is configured to spray from the spray nozzle 20 provided.

The traveling wheel 2 is located below the irrigation work vehicle A.
. 9 are arranged, and the traveling wheels 29.2 are provided.
.. Are driven by a drive motor 16. In the front part, the spray nozzle 20 is provided horizontally through the nozzle base 30, a front bumper 31 is provided below the spray nozzle 20, and a rear bumper 32 is provided in the rear part. I have. Further, a hose winding device 28 around which the scatter hose 21 is wound is incorporated therein, and the hose winding device 28 is configured to operate by the driving force from the driving motor 16. ing. The spray nozzle 20 is used when spraying on crops of flat cultivation or seedlings on the nursery floor, and when spraying on other crops such as three-dimensional cultivation or crops cultivated by hanging with strings, etc. A spray nozzle with a shape can be fitted.

[0012] The lateral transport cart B has wheels 33, 33,.
The mounting table 34 and the control box 39 are disposed on the upper surface, and the mounting table 34 is opened only on one side so that the irrigation work vehicle A can be mounted, and is opposite to the opening. Is provided with a stopper 26 and a hose connection portion 35. The transport rails 24 are arranged on the running sides of the furrows 23, 23... On the entrance side, and the inverting piles 25, 25.・ Is provided. The transport rails 24 also have position stop plates 27 of the lateral transport trolley B.
Are provided for each of the traveling rails 23, 23, and at both ends, a first winch W1 and a second winch W2 for pulling the lateral transport cart B are provided.

The first winch W1 has a winding drum 37.
And a control box 43 and the like, and the wire 41 connected to the horizontal transport vehicle B by the winding drum 37 driven via a motor or the like by a control signal from the control box 39 of the horizontal transport vehicle B By being wound, the horizontal transport trolley B is pulled to move and stop on the transport rails 24 for each of the position stop plates 27. The second winch W2 is:
It is composed of a take-up drum 38, a control box 44, and the like, and is connected to the transverse transfer vehicle B by a take-up drum 38 driven via a motor or the like by a control signal from the control box 39 of the transverse transfer vehicle B. The horizontal transport trolley B is pulled up by winding up the wire 42 that is present, and can be returned to the work start position. However, it is also possible to move the horizontal carriage B by stretching one wire in a loop and rotating one motor forward and backward.

Then, the irrigation work vehicle A that gets off from the lateral transport vehicle B and moves forward reverses and reverses when the front bumper 31 contacts the reverse pile 25, and is mounted on the horizontal transport vehicle B again. At this time, the rear bumper 32 stops when it comes into contact with the stopper 26, a traction signal is issued to the first winch W1, and the horizontal transport vehicle B on which the irrigation work vehicle A is mounted is output.
Is configured to start moving to the entrance of the running rail 23 between the next ridges. Similarly, the irrigation work vehicle A performs the forward running, the reverse running, and the lateral movement by the running rails 23, 23,.
・ The spraying operation is repeated by the number of times, and when the operation is completed, a towing signal is issued to the second winch W2, so that the horizontal transport vehicle B equipped with the irrigation work vehicle A moves to the operation start position and stops. It is configured.

When the irrigation work vehicle A moves forward, the clutch of the hose winding device 28 is in the OFF state, so that the irrigation work vehicle A travels while pulling out the spray hose 21,
In reverse, the clutch of the hose winding device 28 is in the ON state, so that the vehicle travels while winding the spraying hose 21 and stops winding when the irrigation work vehicle A is mounted on the horizontal transport vehicle B. Have been. In addition, the spraying operation by the watering work vehicle A is configured to be able to perform both one-way spraying and reciprocating spraying, so that water or a chemical solution can be sprayed according to the type and growth of the crop to be cultivated. Is configured.

[0016] When the lateral transport cart B is towed during the spraying operation, the clutch of the first winch W1 is in the ON state and the clutch of the second winch W2 is in the OFF state.
The wire 41 is wound up by the winding drum 37, and the wire 42 is fed out from the winding drum 38.
Is stopped, the take-up drums 37 and 38 are fixed by the respective holding mechanisms so as to prevent the lateral transport cart B from being displaced and to ensure that the watering work truck A can be mounted. When the lateral transport vehicle B is towed, the first winch W1 is turned on while the second clutch W2 is ON.
Is turned off, the wire 42 is wound by the winding drum 38, and the wire 41 is fed from the winding drum 41.

Next, one end of the spraying hose 21 of the hose winding device 28 incorporated in the watering work vehicle A is connected to a rotating shaft 28a of the hose winding device 28, and the other end is connected to a horizontal carriage. B is connected to the water supply hose 22 via the hose connection portion 35, and the water supply hose 22 is connected to the tank T. A water supply pipe 45 having a water supply pump 7 and a water supply pipe 46 having a water supply valve 8 are provided in the tank T, and water or a chemical solution is supplied to the tank T from the water supply pipes 45. And a water level sensor 9 for detecting a set water level (water supply amount). Motors M1 and M2 are connected to the water supply pump 7 and the water supply valve 8, respectively. The motors M1 and M2 are connected to the control panel 1 and configured to be controllable. Is also connected to the control panel 1.

The water supply hose 22 has a tank T
A water supply pump 10 that absorbs, pressurizes, and discharges water (or a chemical solution) therein is connected, and a first pressure switch 11 and a second pressure switch 12 that detect a water supply pressure (water supply amount) are connected. . A motor M3 is connected to the water supply pump 10, and the motor M3 is connected to the control panel 1 and configured to be controllable.
The first pressure switch 11 and the second pressure switch 12 are also connected to the control panel 1. The control panel 1 includes a main power supply 2,
A power lamp 3, a timer 4, a fully automatic switch 5, a fully automatic lamp 6, and a pressure abnormality lamp 19 are provided.

Further, a connecting hose 36 is connected to the rotating shaft 28 a of the hose winding device 28, and the connecting hose 36 is connected to the spray nozzle 20. The connection hose 36 is connected to the watering valve 15 and the third pressure switch 13 and the fourth pressure switch 14 for detecting watering pressure (watering amount). A motor M4 is connected to the watering valve 15, and the motor M4 is connected to a control board 17 so as to be controllable. The control board 1
7 is connected to the third pressure switch 13, the fourth pressure switch 14, and a driving motor 16, and the control board 17 is connected to a controller 18 of the irrigation work vehicle A. In this embodiment, the water supply pipe 45 having the water supply pump 7 in the tank T and the water supply valve 8
A water supply pipe 46 having a water supply or a liquid chemical is supplied from the water supply pipes 45 and 46, but only one of them is disposed in the tank T to supply the water or the liquid chemical. It can also be performed, and there is no particular limitation.

Next, a description will be given of an operation control procedure in the case where the automatic watering operation is performed by the automatic watering apparatus having the above-described configuration. The irrigation work vehicle A is previously mounted on the horizontal transport vehicle B and is arranged at the entrance of the travel rail 23 between the ridges at the work start position. Then, as shown in FIG. 4, first, the main power supply 2 of the control panel 1 is turned on. Then power lamp 3
Lights up (1). Next, the timer 4 is operated to set a predetermined water supply start time (work start time) (2), and the fully automatic switch 5 is turned on. Then, the fully automatic lamp 6 is turned on (3).

When the timer 4 reaches the set time (4), the water level sensor 9 detects whether or not the water (or chemical liquid) in the tank T is at the set water level (5). Water level switch of sensor 9 is OFF
), The motor M
1 is operated, the water supply pump 7 is driven (or the motor M2 is operated and the water supply valve 8 is opened), and the tank T
(6), when the set water level is reached, the water level switch of the water level sensor 9 is turned ON (7), and the signal from the control panel 1 activates the motor M3 to start the water pump 10 (8). . In addition, when the inside of the tank T is at the set water level, it is determined that the water level switch of the water level sensor 9 is ON, and the water supply pump 10 starts without the water supply step (6) (8). When the water level in the tank T falls below the set water level during the spraying operation, the water supply pump 7 is automatically turned on.
(Or the water supply valve 8) is driven to supply water.

When water is absorbed, pressurized and discharged by the water supply pump 10 and the water supply pressure of the water supply hose 22 rises to a set pressure at which water can be supplied, the first pressure switch 11 of the water supply hose 22 and the second pressure switch The switch 12 is turned on (9), and the signal is transmitted to the control panel 1. Next, when the sprinkling pressure of the connection hose 36 of the irrigation work vehicle A rises to a set pressure at which water can be sprinkled, the third pressure switch 13 and the fourth pressure switch 14 are turned off.
N (10), the signal is transmitted to the control board 17, the controller 18 of the irrigation work vehicle A is turned on (11), the sprinkling valve switch is turned on, and the signal activates the motor M3 to sprinkle the sprinkling valve. 15 is opened, and watering from the spraying nozzle 20 is started (12).
When the controller 18 is turned on (11),
In response to the signal from the controller 18, the power of the control boxes 39, 43, and 44 of the lateral transport cart B, the first winch W1, and the second winch W2 is also turned on.

When the water is sprayed from the spray nozzle 20, the spray pressure of the connection hose 36 drops below the set pressure, and the third pressure switch 13 is turned off (13). When the pressure falls below the set pressure and the first pressure switch 11 is turned off (1
4), the drive motor 16 of the watering work vehicle A is activated, and automatic watering by the watering work vehicle A is started (15). Then, as described above, the irrigation work vehicle A performs the forward travel, the reverse travel, and the lateral travel from the work start position on the travel rails 2 between a plurality of rows of ridges.
The spraying operation is repeated continuously for the number of 3.23..., And when it is mounted on the horizontal carriage B at the operation end position and stopped, the operation automatically returns to the operation start position and the drive motor 16 is turned off. (16), the watering valve switch is turned off, the motor M3 is operated by a signal from the control board 17, the watering valve 15 is closed, and watering is stopped (17).

When the watering stops (17), the watering pressure of the connection hose 36 rises to the set pressure, the third pressure switch 13 is turned on (18), and the signal is transmitted to the control board 17 to perform the watering operation. Controller 18 of car A
Is turned off (19). Subsequently, the water supply pressure of the water supply hose 22 rises to the set pressure, and the first pressure switch 11 is turned on.
(20), the signal is transmitted to the control panel 1, a stop signal is transmitted from the control panel 1 to the motor M3, the water supply pump 10 is stopped (21), and the water supply pump 7 is driven. stop signal from the control panel 1 to the motor M1 is the water supply pump 7 is transmitted is stopped (or, are closed when the water supply valve 8 is open) (22). Hereinafter, when the fully automatic operation is to be continued, the state may be left as it is, and when the set time comes, the same automatic operation as described above is repeatedly performed. To stop the fully automatic operation, the fully automatic switch 5 may be turned off, and the fully automatic lamp 6 is turned off at the same time (23). Before the power of the irrigation work vehicle A is turned off, the power of the control boxes 39, 41, and 42 of the horizontal transport vehicle B, the first winch W1, and the second winch W2 is turned off by a signal from the controller 18.

Next, a case where an abnormal water supply pressure occurs in the automatic watering apparatus will be described. As shown in FIG. 5, after starting the water supply pump (8), a water supply abnormality occurs due to a shortage of water in the tank T or a failure of the water supply pump (24), and the first pressure switch 11 of the water supply hose 22 is turned off.
In the state of FF (25), the water supply pressure is the first pressure switch 1
1 does not rise to the set pressure at which it turns on, for example, 1
If it does not rise even after 0 minutes, a stop signal is transmitted from the control panel 1 to the motor M3, the water pump 10 is stopped (26), and the pressure abnormality lamp 19 of the control panel 1 is turned on (27).

As shown in FIG. 6, after the automatic watering of the watering work vehicle A is started (15), the water supply abnormality occurs due to the hose detachment of the spraying hose 21 or the breakage of the hose (2).
8) When the water supply pressure decreases to the set pressure at which the second pressure switch of the water supply hose 22 is turned off (29), a stop signal is transmitted from the control panel 1 to the motor M3, the water supply pump 10 is stopped (26), and control is performed. The abnormal pressure lamp 19 of the panel 1 is turned on (27). In addition, as a method of notifying the water supply pressure abnormality, a method of lighting the pressure abnormality lamp 19 is used, but there is also a method of notifying by an alarm such as a buzzer sound.

When the watering pressure drops to the set pressure at which the fourth pressure switch 14 of the connection hose 36 is turned off (3)
0), a stop signal is transmitted from the control board 17 to the drive motor 16, the irrigation work vehicle A is stopped (31), and the watering valve switch is turned off, and the control board 17
, The motor M3 is operated, the watering valve 15 is closed, and watering is stopped (32). Thereafter, the water supply returns to a normal state (33), and when the watering pressure rises to a set pressure at which watering can be performed, the third pressure switch 13 and the fourth pressure switch 14 are turned on (34), and the watering valve switch is turned on. In response to a signal from the control board 17, the motor M3 is operated, the watering valve 15 is opened, watering is restarted (35), and automatic watering of the irrigation work vehicle A is continuously performed (36).

When the unmanned automatic watering apparatus is to be operated manually, the watering work vehicle A is mounted on the horizontal carriage B in advance and arranged at the entrance of the running rail 23 between the ridges at the work start position. As shown in FIG. 7, first, the main power supply 2 of the control panel 1 is turned on (a), the manual switch of the water supply pump 7 (or water supply valve 8) indicated by a lamp is turned on, and water (or chemical liquid) is stored in the tank T. ) Is supplied (b). Next, the water pump manual switch indicated by the lamp is turned on, and the water pump 10 is started (c). Then, the power of the irrigation work vehicle A, the lateral conveyance vehicle B, the first winch W1 and the second winch W2 is turned on, the operation switch of the irrigation work vehicle A is turned on, and the automatic watering operation of the irrigation work vehicle A is started (d). ).

[0029]

As described above, the present invention has the following advantages. According to the structure as described in claim 1, the watering operation is automatically started at a preset operation start time, and the starting operation by the operator is not required, so that the operator can save time and labor. Can be achieved. At the time set by the timer, the water pump is driven to supply the liquid in the tank to the work vehicle, and a connection switch connected to the spray nozzle of the work vehicle is provided with a pressure switch. When the pressure rises to the set pressure, the work vehicle turns on,
Since the watering operation is automatically started, the work vehicle does not start moving while watering is not performed from the watering nozzle. With the configuration as described in claim 2 , it is possible to prevent a variation in watering amount due to a decrease in watering pressure, so that it is possible to perform a uniform watering operation on the crop and to stabilize the operation, The crop can be grown uniformly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a working state of a watering work vehicle A.

FIG. 2 is a plan view of the same.

FIG. 3 is a control block diagram showing an embodiment of the present invention.

FIG. 4 is a diagram showing an operation control procedure of fully automatic driving.

FIG. 5 is a diagram showing a control procedure when a water supply abnormality occurs after the water supply pump 10 is started.

FIG. 6 is a diagram showing a control procedure when a water supply abnormality occurs after the automatic watering of the watering work vehicle A starts.

FIG. 7 is a diagram showing an operation procedure of a manual operation.

[Explanation of symbols]

 Reference Signs List 1 control panel 2 main power supply 4 timer 5 fully automatic switch 7 water supply pump 8 water supply valve 9 water level sensor 10 water supply pump 11 first pressure switch 12 second pressure switch 13 third pressure switch 14 fourth pressure switch 15 watering valve A irrigation work Car B Horizontal transport trolley

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-338253 (JP, A) JP-A-58-189783 (JP, U) JP-A 4-136044 (JP, U) JP-A 47563 (JP, U) Actually open sho 59-35430 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01G 9/24 A01G 25/09

Claims (2)

(57) [Claims] 1. A work vehicle mounted on a horizontal carriage and moved to the next ridge again to get off the liquid in the tank by alighting from the carriage and advancing in the furrow, inverting and reversing when reaching the furrow end, and moving again to the next furrow. In an irrigation device that absorbs, pressurizes, and sprays water with a water pump, a water pump and a control panel are connected, a timer is provided on the control panel, and watering starts at the time set by the timer, and the work vehicle starts working. In the unmanned automatic watering device, the forward running, the backward running, and the lateral movement are continuously repeated from the start position by the number of rows of the rows, and when the work end position is reached, the work vehicle is automatically returned to the work start position and the work vehicle stops . , The Thailand
The water pump is driven at the time set by the
Water in the tank to the work vehicle, and spray nozzles of the work vehicle
A pressure switch is provided in the connection hose section connected to the
When the sprinkling pressure of the connection hose rises to the set pressure, the power of the work vehicle is turned off.
An unmanned automatic irrigation device, characterized in that the irrigation operation is automatically started . 2. An unmanned automatic irrigation device according to claim 1.
And the sprinkling pressure of the connecting hose falls below the set pressure
Then, the automatic watering apparatus is configured to automatically stop the watering operation .