JP2004275147A - Management system for paddy field - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve high accurate management of the water level in paddy fields by starting water drainage at an early stage, for example, when rain fall is expected before long in the case where drainage of the water is needed in the paddy fields. <P>SOLUTION: In the management system for paddy field, particularly controlling the water flow in the rice paddy, a water flow controlling means 41 is provided that can control the water flow on the basis of the data base including the data on the natural environments. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paddy field management system for managing water in a paddy field, for example, in a paddy field for cultivating crops such as paddy rice.
[0002]
[Prior art]
There is a technique for detecting the amount and temperature of water in a paddy field and automatically maintaining the appropriate amount and temperature of water. (For example, see Patent Document 1)
[0003]
[Patent Document 1] JP-A-7-64650
[0004]
[Problems to be solved by the invention]
In the case of the above-mentioned conventional means, since the weather and the like are not taken into consideration, for example, when the rainfall increases due to the change in the weather, there is a problem that the drainage cannot be completely drained even when the drain cock is open, and the amount of water in the paddy field increases.
[0005]
[Means for Solving the Problems]
Therefore, the present invention provides a paddy field management system that controls water in a paddy field, by providing a water management unit that performs control by incorporating natural environmental conditions into data, for example, when drainage is required and rainfall is expected soon, By starting drainage, it is possible to perform highly accurate water level management control.
[0006]
In addition, the weather forecast for a certain period of time is incorporated into the data for control, and the weather forecast for several hours to several days (rainfall forecast) is incorporated in the control to provide a stable and highly accurate water level that is not affected by the weather. This makes it possible to perform management control.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of the entire field, in which water from a water source such as a river or a pond is fed into a paddy field 2 through an irrigation channel 1, a hydrant 3 for supplying water to each paddy field, and a drainage for discharging water from each paddy field. A plug 4, a water temperature sensor 5 for measuring the water temperature of each paddy field 2, a temperature sensor 6 for measuring the temperature of each paddy field 2, a water level sensor 7 for measuring the water level of each paddy field 2, and the ground surface or underground temperature Temperature sensor 8 for measuring the electric conductivity, an electric conductivity sensor 9 for measuring the electric conductivity EC which is a substitute characteristic of the pesticide, and an oxidation reduction potential sensor 10 for measuring the oxidation reduction potential Eh. A water supply wireless terminal device 11 that opens and closes the drain 3, a drainage wireless terminal device 12 that opens and closes the drain plug 4, a base station 14 such as a farming office having a water management personal computer such as a host computer in the information collection device 13, Devices 11 and 12 and base station 14 And a relay device 15 that relays a radio signal transmitted and is disposed around paddy 2.
[0008]
As shown in FIG. 2, various data such as water temperature, temperature, water level, and ground temperature measured by the sensors 5, 6, 7, and 8 are collected by the information collecting device of the base station 14 via the terminal devices 11 and 12 and the relay device 15. The information collection device 13 is connected to the information collection device 13 by wireless communication via the relay device 15 and the controller 18 that transmits the information to the information collection device 13 by wireless communication and opens and closes the electromagnetic valves 16 and 17 of the water supply and drain plugs 3 and 4. The water supply and drain cocks 3 and 4 (electromagnetic valves 16 and 17) are controlled to be opened and closed by remote control based on various input data.
[0009]
A mobile phone 21 is bidirectionally connected to the information collecting apparatus 13 via the communication means 20 of the Internet or packet network, and as shown in FIG. -Edits and outputs various data of temperature, date of measurement, measurement time, information of measurement field (paddy field) to mail screen data, and enables information to be sent to any person at any location. In addition, it is provided so that information such as collected data can be easily browsed and settings can be easily changed from the mobile phone 21.
[0010]
When an abnormality such as a failure occurs on the paddy field management system, the cause of the failure is edited into mail screen data and output to the mobile phone 21 from the information collection device 13, and the occurrence of the abnormality is immediately notified to each paddy field manager or the like. Let it.
[0011]
As shown in FIGS. 4 and 5, a rain sensor 22 and a barometer 23 are input connected to a relay device 15 arranged at a communication intermediate position between the base station 14 and each of the wireless terminal devices 11 and 12 for several hours to several hours. The daily weather (rainfall) forecast is incorporated into the opening and closing control of each drain plug 4, and a water management means 41 for opening the drain plug 4 early when rain is expected in the near future when drainage is required is provided. It is configured to enable high-precision drainage control.
[0012]
In the above description, the water level prediction control is automatically performed using the rainfall sensor 22 and the barometer 23. However, the rainfall per certain time is predicted by human judgment and incorporated into the control of the drain plug 4. A configuration may be used.
[0013]
As is clear from the above, in the paddy field management system for controlling the water in the paddy field, the provision of the water management means 41 for incorporating and controlling the natural environmental conditions in the data provides, for example, when drainage is required, rainfall will soon occur. When anticipated, the drainage can be started early to enable highly accurate water level management control.
[0014]
In addition, by providing a rainfall sensor 22 and a barometer 23, which are prediction control means for performing control by incorporating weather prediction for a certain period of time into data, weather prediction (rainfall prediction) for several hours to several days can be controlled. By incorporating it, it is possible to control the water level stably and accurately without being affected by the weather.
[0015]
As shown in FIG. 6, for example, when there is no rainfall (no rainfall), an alarm device is activated in an abnormal state in which the water level of the paddy field 2 does not decrease despite the drain plug 4 being kept open for a certain period of time. The alarm device is also activated when the water level drops abnormally when the drain plug 4 is closed.
[0016]
As shown in FIG. 7, a sedimentation tank 24 and a spillway 25 are interposed in the middle of the drainage channel between the paddy field 2 and the drain plug 4, and the drainage including the cultivated soil is once drawn into the sedimentation tank 24 to reduce the water pressure and to reduce the cultivated soil 26. The paddy water is drained to the drainage channel after settling.
[0017]
As shown in FIGS. 4 and 8, a salt sensor 27 is connected to the water supply wireless terminal device 11 together with the temperature, water temperature, water level, and ground temperature sensors 5 to 8, and an abnormal value is displayed when the salt concentration is equal to or higher than a set value. And a warning is given, and the water supply / drainage taps 3 and 4 are controlled to open so that the water in the paddy field is replaced so that the salt concentration is set to a set value or less.
[0018]
As shown in FIG. 9, a solar panel 29 serving as a power supply for the terminal devices 11 and 12 is provided at the upper end of a support 28 to which the wireless terminal devices 11 and 12 are attached. A solar panel 29 is arranged above the height L (L ≒ 2.5 m) to prevent mischief or theft.
[0019]
As shown in FIG. 10, a dust net 31 is provided at the inlet of the water supply channel 30 for drawing water from the irrigation channel 1 into the paddy field 2 to protect the water tap 3 and a chemical solution or the like is provided in the water supply channel 30 downstream of the water tap 3. The spraying port 32a of the liquid sprayer 32 is connected via a spraying amount adjusting valve 33, and spraying is performed simultaneously with water supply to the paddy field 2.
[0020]
As shown in FIG. 11, mats 34 and 35, such as artificial grass, are laid on the rice stove near the water inlet of the water tap 3 and the top soil near the water inlet, and the soil near the water tap 3 is drained by the water flow. This prevents inconveniences that are rushed.
[0021]
As shown in FIG. 12, the hydrant electromagnetic valve 16 constituting the hydrant 3 is configured such that a joint pipe 39 integral with the valve 16 is attached to and removed from an existing water pipe 37 having a manual valve 36 via a water inlet joint 38. The electromagnetic valve 16 is freely provided, and the electromagnetic valve 16 is removed from a paddy field where the electromagnetic valve 16 is not used, such as a fallow rice field or a cultivated paddy field, and the electromagnetic valve 16 is transferred and used only in a necessary paddy field.
[0022]
As shown in FIG. 1, when the water supply wireless terminal device 11 has an electric conductivity sensor 9 and an oxidation reduction potential sensor 10, and the electric conductivity EC and the oxidation reduction potential Eh are equal to or more than set values. The drain valve 4 is closed and controlled to prevent a risk that an agricultural chemical having a prescribed value or more flows out into the living water system and cause environmental pollution, thereby preserving the global environment.
[0023]
As shown in FIG. 8, the water supply wireless terminal device 11 (or the drainage wireless terminal device 12) may be provided with an electromagnetic wave transmitting device 40 for transmitting electromagnetic waves that a bird dislikes, thereby preventing crops such as paddy rice from bird damage. .
[0024]
【The invention's effect】
As is clear from the above embodiments, the present invention provides a paddy field management system for controlling water in a paddy field, which is provided with a water management unit 41 for performing control by incorporating natural environmental conditions into data. In such a case, when rainfall is expected in the near future, drainage can be started at an early stage, and highly accurate water level management control can be performed.
[0025]
In addition, since the apparatus is provided with the prediction control means 22 and 23 for performing control by incorporating the weather forecast for a certain time into the data, the weather forecast (rainfall forecast) for several hours to several days is incorporated in the control to control the weather. It is possible to enable stable and accurate water level management and control without being affected.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a paddy field.
FIG. 2 is a management circuit diagram.
FIG. 3 is an output flow of mail.
FIG. 4 is a circuit diagram of a water management unit.
FIG. 5 is a flowchart of a prediction control.
FIG. 6 is a flowchart of drainage alarm control.
FIG. 7 is an explanatory view of a sedimentation tank and spillway installation.
FIG. 8 is a flow chart of salt alarm control.
FIG. 9 is an explanatory diagram of a wireless terminal device.
FIG. 10 is an explanatory view of installation of a dust net and a liquid sprayer.
FIG. 11 is an explanatory view of laying a mat.
FIG. 12 is an explanatory view of the attachment and detachment of the electromagnetic valve.
[Explanation of symbols]
22 Rainfall sensor (predictive control means)
23 barometer (predictive control means)
41 Water management measures

Claims (2)

A paddy field management system for controlling water in a paddy field, comprising a water management means for incorporating natural environmental conditions into data and performing control. The paddy field management system according to claim 1, wherein the control is performed by incorporating a weather forecast for a predetermined time into data.

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