JP2002125482A - Freezing and frost damage-preventing device - Google Patents
Freezing and frost damage-preventing deviceInfo
- Publication number
- JP2002125482A JP2002125482A JP2000355022A JP2000355022A JP2002125482A JP 2002125482 A JP2002125482 A JP 2002125482A JP 2000355022 A JP2000355022 A JP 2000355022A JP 2000355022 A JP2000355022 A JP 2000355022A JP 2002125482 A JP2002125482 A JP 2002125482A
- Authority
- JP
- Japan
- Prior art keywords
- watering
- temperature
- intermittent
- frost damage
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Cultivation Of Plants (AREA)
- Protection Of Plants (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Spray Control Apparatus (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、農作物の表面に撒
水することによって凍霜害を防止する凍霜害防止装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing frost damage by spraying water on the surface of agricultural products.
【０００２】[0002]
【従来の技術】わが国の凍霜害による農産物の被害は、
農業気象災害のなかでも大きな部類に属し、農作物で
は、果樹・茶・桑・馬鈴薯などにその被害が甚大であ
る。2. Description of the Related Art Damage to agricultural products due to frost damage in Japan
It belongs to a large category among agricultural meteorological disasters, and in crops, fruit trees, tea, mulberry, potatoes and the like are severely damaged.
【０００３】凍霜害を防ぐ方法として従来から知られて
いる防霜ファンは、圃場の上空の大気を撹拌することに
よって圃場の温度が急激に低下するのを防ぐことで凍霜
害を防止する方法であるが、気温が・４°Ｃ以下の温度
になると、農作物の表面に霜が付き、防霜効果が皆無と
なる。An anti-frost fan conventionally known as a method for preventing frost damage is a method for preventing frost damage by stirring the air above the field to prevent the temperature of the field from dropping sharply. However, when the temperature reaches a temperature of -4 ° C or less, frost is formed on the surface of the crop, and the frost prevention effect is completely eliminated.
【０００４】また、圃場の上空を煙で覆うことにより圃
場の温度が低下するのを防ぐことで凍霜害を防ぐ方法で
は、煙を圃場の上に均一に保持することが難しく、また
風があれば煙は飛散してしまい効果が期待できない。[0004] In the method of preventing the frost damage by preventing the temperature of the field from lowering by covering the field with smoke, it is difficult to keep the smoke uniformly on the field and the wind If the smoke scatters, the effect cannot be expected.
【０００５】上記の問題点を解決するために、農作物に
霜が降りたならば農作物の表面に撒水し、この散水した
水が凝固する際に発生する潜熱によって、農作物の葉の
温度を０°Ｃ付近に保持して、凍霜害を防止する方法
（撒水氷結法）が注目されている。[0005] In order to solve the above-mentioned problems, if the crop is frosted, water is sprayed on the surface of the crop, and the temperature of the leaves of the crop is reduced to 0 ° by latent heat generated when the sprinkled water solidifies. Attention has been paid to a method (spraying and freezing method) in which the material is kept near C to prevent frost damage.
【０００６】撒水氷結法の実施例として特公平８−１２
７２号公報には、温度を感知して自動的に撒水する自動
弁が開示されている。この自動弁には定温度作動弁が接
続されており、所定温度になると定温度作動弁が作動
し、自動弁が導通状態となって撒水が開始される機構と
なっている。As an example of the watering and freezing method, Japanese Patent Publication No. 8-12
No. 72 discloses an automatic valve that senses temperature and automatically sprays water. A constant-temperature operating valve is connected to this automatic valve, and when the temperature reaches a predetermined temperature, the constant-temperature operating valve is activated, the automatic valve is brought into a conductive state, and watering is started.
【０００７】ところで上記の自動弁は、霜が降りる温度
になった場合に撒水を開始する機能を有しているが、撒
水開始後に温度が上昇して凍霜害の心配がなくなった場
合に撒水を停止する機能が備わっていない。したがって
人手によって停止させない限り水が無駄に撒水されると
いう不具合がある。また、定温度作動弁は感知精度が悪
く、さらに経年変化が著しいために定期的な管理が必要
とされるという欠点がある。The above-mentioned automatic valve has a function of starting water spraying when the temperature of frost falls. However, when the temperature rises after the start of water spraying and there is no fear of frost damage, water spraying is started. There is no function to stop. Therefore, there is a problem that water is sprinkled wastefully unless stopped manually. In addition, the constant temperature actuated valve has the disadvantage that the sensing accuracy is poor, and that it needs to be periodically managed because of its aging.
【０００８】[0008]
【発明が解決しようとする課題】上記問題を鑑み、撒水
の開始および停止を自動的に行うとともに、撒水量の無
駄を無くすことができる凍霜害防止装置を提供すること
を目的とする。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an apparatus for preventing freezing and frost damage, which can automatically start and stop watering and eliminate waste of watering.
【０００９】[0009]
【課題を解決するための手段】第１の発明の凍霜害防止
装置は、農作物の表面に撒水することによって凍霜害を
防止する凍霜害防止装置であって、撒水を開始する温度
を設定する撒水開始温度設定手段と、撒水を停止する温
度を設定する撒水停止温度設定手段と、農作物の圃場に
設けられた温度センサの温度情報により撒水の開始およ
び停止を判定する撒水動作温度判定回路と、撒水動作を
制御する撒水動作制御回路とを備えることを特徴とす
る。A first aspect of the present invention is a frost damage prevention apparatus for preventing frost damage by spraying water on the surface of agricultural crops. Start water setting means, watering stop temperature setting means for setting a temperature at which watering is stopped, watering operation temperature determining circuit for determining start and stop of watering based on temperature information of a temperature sensor provided in a farm field, And a watering operation control circuit for controlling the operation.
【００１０】第２の発明は第１の発明の凍霜害防止装置
において、さらに、間欠的に撒水する時間間隔（撒水時
間間隔）および撒水休止時間を設定する間欠時間設定手
段と、この間欠時間設定手段によって設定された時間間
隔に基づいて撒水間隔を制御する間欠時間設定回路とを
備えることを特徴とする。According to a second aspect of the present invention, in the apparatus for preventing frost damage according to the first aspect of the present invention, there is further provided an intermittent time setting means for setting an intermittent watering time interval (watering time interval) and a watering suspension time, and the intermittent time setting. An intermittent time setting circuit for controlling a watering interval based on the time interval set by the means.
【００１１】第３の発明は第２の発明の凍霜害防止装置
において、前記撒水時間間隔および前記撒水休止時間
は、前記間欠時間設定手段によって変更可能であること
を特徴とする。According to a third aspect of the present invention, in the apparatus for preventing frost damage according to the second aspect of the present invention, the watering time interval and the watering suspension time can be changed by the intermittent time setting means.
【００１２】第４の発明は第２の発明の凍霜害防止装置
において、前記間欠時間設定手段によって、圃場温度が
上昇するに伴って間欠動作の間隔を次第に長くなるよう
に設定可能であることを特徴とする。According to a fourth aspect of the present invention, in the apparatus for preventing frost damage of the second aspect, the intermittent time setting means can set the interval of the intermittent operation to be gradually longer as the field temperature rises. Features.
【００１３】[0013]
【作用】本発明の凍霜害防止装置は、周辺の温度が下が
り、圃場の温度を検出する温度センサの出力が予め設定
された撒水開始温度と一致した場合には撒水を開始さ
せ、やがて温度が上昇して予め設定された撒水停止温度
と一致した場合に撒水を停止させることによって凍霜害
を防止する。自動的に撒水が停止するために、人が圃場
に出向く必要がなく、さらに撒水する水の量を節約する
ことができる。また、撒水を間欠的に行うことにより、
撒水する水の量を凍霜害を防止する最適な量に調整する
ことが可能となる。The apparatus for preventing frost damage according to the present invention starts watering when the temperature of the surroundings falls and the output of the temperature sensor for detecting the temperature of the field coincides with a predetermined watering start temperature. When the water temperature rises and matches a preset watering stop temperature, watering is stopped to prevent frost damage. Since watering is automatically stopped, there is no need for a person to go to the field, and the amount of water to be watered can be further reduced. Also, by sprinkling water intermittently,
The amount of water to be sprinkled can be adjusted to an optimal amount for preventing frost damage.
【００１４】[0014]
【発明の実施の形態】図１は本発明の凍霜害防止装置の
実施例の概略を示す概念図、図２は凍霜害防止装置の第
１の実施例の制御の流れを示す制御ブロック、図３は第
２の実施例の制御の流れを示す制御ブロック、図４は第
２の実施例における撒水動作を説明するタイムチャート
である。いうまでもなく、本発明の凍霜害防止装置はこ
れらの実施例に限るものではない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a conceptual diagram schematically showing an embodiment of a frost protection apparatus according to the present invention. FIG. 2 is a control block diagram showing a control flow of the first embodiment of the frost protection apparatus. 3 is a control block showing a control flow of the second embodiment, and FIG. 4 is a time chart for explaining a watering operation in the second embodiment. Needless to say, the apparatus for preventing frost damage of the present invention is not limited to these embodiments.
【００１５】図１に示すように、本発明の凍霜害防止装
置１０は、温度センサ２０および撒水を開閉する電磁バ
ルブ３０が接続される。温度センサ２０は、茶などの農
作物が植えられた圃場に設置され、農作物の表面付近の
温度を測定するのに、適切に設けられる。本実施例で
は、サーミスタを温度センサとして使用しているが、こ
れに限るものではなく、環境に強く、安定した出力の得
られるものであればいずれでもよい。使用環境が野外で
あるために、温度センサおよび温度センサ回路は２系統
用意して、いずれか一方が故障しても運転に差し支えが
出ないようにしておくのが望ましい。As shown in FIG. 1, a frost damage preventing apparatus 10 of the present invention is connected to a temperature sensor 20 and an electromagnetic valve 30 for opening and closing water spray. The temperature sensor 20 is installed in a field where agricultural products such as tea are planted, and is appropriately provided to measure the temperature near the surface of the agricultural products. In this embodiment, the thermistor is used as a temperature sensor. However, the present invention is not limited to this, and any device that is strong against the environment and can obtain a stable output can be used. Since the use environment is outdoors, it is desirable that two systems of the temperature sensor and the temperature sensor circuit be prepared so that even if one of them fails, the operation is not hindered.
【００１６】また、電磁バルブ３０は凍霜害防止装置の
出力制御信号に従って開閉されることによって、水源５
０から供給される水が撒水器４０に至る流れを制御する
ものであり、撒水を行うか、停止させるかを制御する。The electromagnetic valve 30 is opened and closed in accordance with the output control signal of the frost protection device, so that the water source 5 is controlled.
It controls the flow of water supplied from 0 to the sprinkler 40, and controls whether to sprinkle or stop.
【００１７】第１の実施例を図２によって説明する。撒
水動作温度判定回路１１には、撒水を開始する温度を設
定する撒水開始温度設定手段１２と、撒水を停止させる
温度を設定する撒水停止温度設定手段１３と、圃場に設
置された温度センサ２０が接続されている。温度センサ
２０で検出された圃場の温度信号が撒水開始温度設定手
段１２によって設定される撒水開始温度と一致した場合
に撒水開始温度信号が撒水動作制御回路１４に出力され
る。一方、温度センサ２０で検出された圃場の温度信号
が撒水停止温度と一致した場合は、撒水停止温度信号が
撒水動作制御回路１４に出力される。The first embodiment will be described with reference to FIG. The watering operation temperature determination circuit 11 includes watering start temperature setting means 12 for setting a temperature at which watering is started, watering stop temperature setting means 13 for setting a temperature at which watering is stopped, and a temperature sensor 20 installed in a field. It is connected. When the temperature signal of the field detected by the temperature sensor 20 matches the watering start temperature set by the watering start temperature setting means 12, the watering start temperature signal is output to the watering operation control circuit 14. On the other hand, when the temperature signal of the field detected by the temperature sensor 20 matches the watering stop temperature, the watering stop temperature signal is output to the watering operation control circuit 14.
【００１８】撒水開始温度設定手段１２および撒水停止
温度設定手段１３は切換スイッチもしくはボリュームな
どの撒水開始温度もしくは撒水停止温度が設定できる手
段を使用しており、その日の気候等を考慮して農作物を
凍霜害から守るのに最適な温度に設定することができ
る。The watering start temperature setting means 12 and the watering stop temperature setting means 13 use means such as a changeover switch or a volume which can set the watering start temperature or the watering stop temperature. The optimum temperature can be set to protect from frost damage.
【００１９】撒水動作制御回路１４は撒水動作温度判定
回路１１の出力信号を受けて、撒水動作の開始および停
止、即ち電磁バルブ３０の開閉（オン・オフ）を制御す
るバルブ制御信号をバルブ制御回路１６に出力する。撒
水動作温度判定回路１１から撒水開始温度信号が出力さ
れた場合には、電磁バルブ３０を開く制御信号が出力さ
れ、撒水動作温度設定回路１１から撒水停止温度信号が
出力された場合には、電磁バルブ３０を閉じる制御信号
が出力される。The watering operation control circuit 14 receives the output signal of the watering operation temperature judging circuit 11 and sends a valve control signal for controlling start and stop of the watering operation, that is, opening and closing (on / off) of the electromagnetic valve 30, to the valve control circuit. 16 is output. When a watering start temperature signal is output from the watering operation temperature determination circuit 11, a control signal for opening the electromagnetic valve 30 is output, and when a watering stop temperature signal is output from the watering operation temperature setting circuit 11, A control signal for closing the valve 30 is output.
【００２０】バルブ制御回路１６は撒水動作制御回路１
４および自動／手動切換スイッチ１６が接続されてい
る。自動／手動切換スイッチ１７の設定が手動の場合に
は、撒水動作制御回路１４に関係なく手動で撒水の開始
停止を行うことができる。自動／手動切換スイッチ１６
が自動に設定されている場合には、撒水動作制御回路１
４の出力によって電磁バルブ２０が開閉され、撒水器４
０への給水がなされて、圃場に撒水される。The valve control circuit 16 is a watering operation control circuit 1
4 and an automatic / manual changeover switch 16 are connected. When the setting of the automatic / manual changeover switch 17 is manual, the start and stop of watering can be manually performed regardless of the watering operation control circuit 14. Automatic / manual switch 16
Is set to automatic, the watering operation control circuit 1
The electromagnetic valve 20 is opened and closed by the output of the
The water is supplied to 0, and the water is sprayed on the field.
【００２１】次に、第１の実施例の動作について説明す
る。ここでは自動／手動スイッチ１７は自動モードに設
定されているものとする。Next, the operation of the first embodiment will be described. Here, it is assumed that the automatic / manual switch 17 is set to the automatic mode.
【００２２】温度センサ２０で検出された温度情報信号
が撒水開始温度設定手段１２によって予め設定された撒
水開始温度と一致したことを撒水動作温度判定回路１１
が検出すると、撒水開始温度信号が撒水動作制御回路１
４に出力される。撒水動作制御回路１４は電磁バルブを
開く制御信号をバルブ制御回路１６に出力することによ
って電磁バルブ３０が開き、撒水器４０から撒水が開始
される。The watering operation temperature determining circuit 11 determines that the temperature information signal detected by the temperature sensor 20 matches the watering start temperature preset by the watering start temperature setting means 12.
Is detected, the watering start temperature signal is transmitted to the watering operation control circuit 1
4 is output. The watering operation control circuit 14 outputs a control signal for opening the electromagnetic valve to the valve control circuit 16 to open the electromagnetic valve 30 and start watering from the watering device 40.
【００２３】圃場内の大気温度が上昇し、温度センサ２
０の検出信号が撒水停止温度設定手段１３が予め設定し
た撒水開始温度になったことを撒水動作温度判定回路１
１が検出すると、撒水停止温度信号が撒水動作制御回路
１４に出力される。撒水動作制御回路１４はバルブを閉
じる制御信号をバルブ制御回路１６に出力することによ
ってバルブ３０が閉じ、撒水器４０からの撒水が停止さ
れる。When the atmospheric temperature in the field rises, the temperature sensor 2
The watering operation temperature determination circuit 1 determines that the detection signal of 0 has reached the watering start temperature set by the watering stop temperature setting means 13 in advance.
When 1 is detected, a watering stop temperature signal is output to the watering operation control circuit 14. The watering operation control circuit 14 outputs a control signal to close the valve to the valve control circuit 16 to close the valve 30 and stop watering from the watering device 40.
【００２４】このように構成された第１の実施例の凍霜
害防止装置１０によれば、撒水開始温度まで大気温度が
低下すると撒水が自動的に開始され、撒水停止温度まで
上昇すれば、自動的に撒水が停止する。このように撒水
開始温度および撒水停止温度を予め設定しおくことによ
り、撒水の開始および停止が自動的に行われる。According to the apparatus 10 for preventing frost damage according to the first embodiment, watering is automatically started when the temperature of the air drops to the watering start temperature, and automatically started when the temperature reaches the watering stop temperature. Watering stops temporarily. By setting the watering start temperature and the watering stop temperature in advance in this way, the watering starts and stops automatically.
【００２５】第２の実施例を図３をもって説明する。第
２の実施例は、第１の実施例に加えて、間欠的な撒水を
行うための間欠動作時間制御回路１７と間欠時間設定手
段１８を備えている。さらに、撒水動作を連続的に行う
か、間欠的に行う連続／間欠選択スイッチ１９を備え
る。A second embodiment will be described with reference to FIG. In the second embodiment, in addition to the first embodiment, an intermittent operation time control circuit 17 for performing intermittent watering and an intermittent time setting means 18 are provided. Further, a continuous / intermittent selection switch 19 for performing the watering operation continuously or intermittently is provided.
【００２６】撒水の間欠動作とは所定時間撒水した後に
所定時間撒水を停止し、再び所定時間撒水する動作を繰
り返して行うものである（図４（ｂ））。間欠動作時間
制御回路１７は間欠時間設定手段１８の設定に基づき、
撒水動作の動作時間と停止時間の制御を行うものであ
り、間欠動作の制御信号を撒水動作制御回路１４に出力
する。The intermittent operation of watering is to repeat the operation of watering for a predetermined time after watering is stopped for a predetermined time and then watering again for a predetermined time (FIG. 4B). The intermittent operation time control circuit 17 sets the intermittent time
It controls the operation time and the stop time of the watering operation, and outputs a control signal of the intermittent operation to the watering operation control circuit 14.
【００２７】ここで、連続／間欠スイッチ１９が間欠モ
ードに設定されているならば、撒水動作制御回路１４は
間欠動作時間制御回路１７の出力信号にしたがって、電
磁バルブ３０を開く制御信号および閉じる制御信号を交
互に出力する。If the continuous / intermittent switch 19 is set to the intermittent mode, the watering operation control circuit 14 controls the opening and closing of the electromagnetic valve 30 in accordance with the output signal of the intermittent operation time control circuit 17. Output signals alternately.
【００２８】間欠時間設定手段１８は図４の（ｂ）に示
す間欠動作の間隔Ｔおよび休止時間Ｔｓを設定可能に構
成される。The intermittent time setting means 18 is capable of setting an intermittent operation interval T and a pause time Ts shown in FIG.
【００２９】また、間欠時間設定手段１８は間欠動作の
間隔を図４の（ｃ）に示すように、次第に間隔を長くす
るように設定することも可能なように構成される。Further, the intermittent time setting means 18 is configured so that the interval of the intermittent operation can be set so as to gradually increase as shown in FIG. 4C.
【００３０】第２の実施例の動作を説明する。ここで
は、連続／間欠切換スイッチ１９を間欠モードに設定
し、自動／手動スイッチ１６は自動モードに設定されて
いるものとする。The operation of the second embodiment will be described. Here, it is assumed that the continuous / intermittent changeover switch 19 is set to the intermittent mode, and the automatic / manual switch 16 is set to the automatic mode.
【００３１】温度センサ２０で検出された温度情報信号
が撒水開始温度設定手段１２によって予め設定された撒
水開始温度と一致したことを撒水動作温度判定回路１１
が検出すると、撒水開始温度信号が撒水動作制御回路１
４に出力される。撒水動作制御回路１４は、間欠時間設
定手段１８による設定に基づいて間欠動作時間制御回路
１７によって出力された間欠動作パターンにしたがって
電磁バルブ３０を開く制御信号とバルブを閉じる制御信
号が交互に所定の間隔をもって繰り返しバルブ制御回路
１６に出力される。この間欠的に撒水する動作は、撒水
動作制御回路１４が撒水停止温度信号を受け取るまで継
続される。The watering operation temperature determination circuit 11 determines that the temperature information signal detected by the temperature sensor 20 matches the watering start temperature preset by the watering start temperature setting means 12.
Is detected, the watering start temperature signal is transmitted to the watering operation control circuit 1
4 is output. The sprinkling operation control circuit 14 alternately performs a predetermined control signal for opening the electromagnetic valve 30 and a control signal for closing the valve in accordance with the intermittent operation pattern output by the intermittent operation time control circuit 17 based on the setting by the intermittent time setting means 18. It is repeatedly output to the valve control circuit 16 at intervals. This intermittent watering operation is continued until the watering operation control circuit 14 receives the watering stop temperature signal.
【００３２】このように間欠的に撒水を行うことによ
り、撒水器４０から撒水される水の量を調節することが
可能となる。従って農作物の表面に撒水される水が氷結
しやすいように水の量を調整することが可能となるとと
もに、使用する水の量の節約をすることができる。By intermittently sprinkling water in this manner, the amount of water sprinkled from the sprinkler 40 can be adjusted. Therefore, it is possible to adjust the amount of water so that the water sprinkled on the surface of the crop is easily frozen, and it is possible to save the amount of water used.
【００３３】また、温度が上昇するに従って氷結する可
能性が低くなるので、撒水量は少なくてよいと考えられ
るので、撒水間隔を次第に長くなるように変化させるこ
とによって、最適な撒水量を実現できる。Since the possibility of freezing decreases as the temperature rises, it is considered that the amount of watering may be small. Therefore, by changing the watering interval so as to be gradually longer, the optimum watering amount can be realized. .
【００３４】なお、第１の実施例および第２の実施例の
凍霜害防止装置１０には、バルブ制御回路１５を内蔵し
ている例を示したが、撒水器自体がバルブ等の撒水する
水の開閉を制御する回路を備えている場合には、バルブ
開閉制御信号を撒水器に出力すれば撒水動作が制御でき
るので、バルブ制御回路１５を省いた構成とすることが
できる。In the first and second embodiments, the frost and frost damage preventing device 10 has an example in which the valve control circuit 15 is incorporated. If a circuit for controlling the opening and closing of the valve is provided, the sprinkling operation can be controlled by outputting a valve opening and closing control signal to the sprinkler, so that the valve control circuit 15 can be omitted.
【００３５】また、第２の実施例において、連続／間欠
切換スイッチ１９を設けて撒水動作の連続モードと間欠
モードとを切り換えているが、間欠時間設定手段１８の
撒水休止時間の設定をゼロにすることにより連続モード
を実現すれば、連続／間欠切換スイッチ１９を省略する
構成とすることも可能である。In the second embodiment, the continuous / intermittent changeover switch 19 is provided to switch between the continuous mode and the intermittent mode of the watering operation. However, the setting of the watering suspension time of the intermittent time setting means 18 is set to zero. Thus, if the continuous mode is realized, the continuous / intermittent changeover switch 19 can be omitted.
【００３６】[0036]
【発明の効果】従来の撒水氷結法による凍霜害防止装置
には、定温作動弁を用いているために温度を関知して自
動的に撒水が開始されるが、停止は人手によっている。
そのために人が圃場に出向いて手動で撒水を停止させる
必要があった。また、定温作動弁は精度が悪く、さらに
経年変化を起こすという問題があった。In the conventional apparatus for preventing frost damage caused by the watering and freezing method, watering is automatically started in response to the temperature because a constant temperature operating valve is used, but the watering is stopped manually.
Therefore, it was necessary for a person to go to the field and manually stop watering. Further, there has been a problem that the constant-temperature operation valve has poor accuracy and causes aging.
【００３７】本発明の凍霜害防止装置は、撒水停止温度
を判定して撒水動作を停止させる機能を備えているため
に、予め設定された温度になった時点で撒水が停止され
る。そのために、作業者が圃場を見回る必要がないとと
もに、撒水する水の量を節約することができる。Since the apparatus for preventing frost damage according to the present invention has a function of judging a watering stop temperature and stopping the watering operation, watering is stopped when the temperature reaches a preset temperature. Therefore, it is not necessary for the worker to look around the field, and the amount of water to be sprinkled can be saved.
【図１】本発明の凍霜害防止装置の接続態様を示す説明
図である。FIG. 1 is an explanatory diagram showing a connection mode of a frost protection device according to the present invention.
【図２】第１の実施例の制御ブロック図である。FIG. 2 is a control block diagram of the first embodiment.
【図３】第２の実施例の制御ブロック図であるFIG. 3 is a control block diagram of a second embodiment.
【図４】間欠的撒水動作を説明するタイムチャートであ
る。FIG. 4 is a time chart illustrating an intermittent watering operation.
１０ 凍霜害防止装置 １１ 撒水動作温度判定回路 １２ 撒水開始温度設定手段 １３ 撒水停止温度設定手段 １４ 撒水動作制御回路 １５ バルブ制御回路 １６ 自動／手動切換スイッチ １７ 間欠動作時間制御回路 １８ 間欠時間間隔設定手段 １９ 連続／間欠切換スイッチ ２０ 温度センサ ３０ 電磁バルブ ４０ 撒水器 ５０ 水源 DESCRIPTION OF SYMBOLS 10 Frost frost prevention device 11 Sprinkling operation temperature judgment circuit 12 Sprinkling start temperature setting means 13 Sprinkling stop temperature setting means 14 Sprinkling operation control circuit 15 Valve control circuit 16 Automatic / manual switch 17 Intermittent operation time control circuit 18 Intermittent time interval setting means 19 continuous / intermittent changeover switch 20 temperature sensor 30 solenoid valve 40 water sprinkler 50 water source
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０５Ｄ 1/02 Ｂ０５Ｄ 1/02 Ｚ 3/00 3/00 Ｄ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI theme coat ゛ (Reference) B05D 1/02 B05D 1/02 Z 3/00 3/00 D
Claims (4)
霜害を防止する凍霜害防止装置であって、撒水を開始す
る温度を設定する撒水開始温度設定手段と、撒水を停止
する温度を設定する撒水停止温度設定手段と、農作物の
圃場に設けられた温度センサの温度情報により撒水の開
始および停止を判定する撒水動作温度判定回路と、撒水
動作を制御する撒水動作制御回路とを備えることを特徴
とする凍霜害防止装置。An apparatus for preventing frost damage by spraying water on the surface of agricultural products, the spraying start temperature setting means for setting a temperature for starting watering, and a watering for setting a temperature for stopping watering. Stop temperature setting means, a watering operation temperature determination circuit that determines start and stop of watering based on temperature information of a temperature sensor provided in a field of agricultural products, and a watering operation control circuit that controls watering operation, To prevent frost damage.
水時間間隔）および撒水休止時間を設定する間欠時間設
定手段と、この間欠時間設定手段によって設定された時
間間隔に基づいて撒水間隔を制御する間欠時間設定回路
とを備えることを特徴とする請求項１に記載の凍霜害防
止装置。2. An intermittent time setting means for setting an intermittent watering time interval (watering time interval) and a watering suspension time, and controlling the watering interval based on the time interval set by the intermittent time setting means. The apparatus for preventing frost and frost damage according to claim 1, further comprising: an intermittent time setting circuit that performs the operation.
間は、前記間欠時間設定手段によって変更可能であるこ
とを特徴とする請求項２に記載の凍霜害防止装置。3. The apparatus according to claim 2, wherein the watering time interval and the watering suspension time can be changed by the intermittent time setting means.
度が上昇するに伴って間欠動作の間隔を次第に長くなる
ように設定可能であることを特徴とする請求項２に記載
の凍霜害防止装置。4. The apparatus according to claim 2, wherein the intermittent time setting means can set the interval of the intermittent operation to gradually increase as the field temperature increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000355022A JP3731202B2 (en) | 2000-10-18 | 2000-10-18 | Frost damage prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000355022A JP3731202B2 (en) | 2000-10-18 | 2000-10-18 | Frost damage prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002125482A true JP2002125482A (en) | 2002-05-08 |
| JP3731202B2 JP3731202B2 (en) | 2006-01-05 |
Family
ID=18827512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000355022A Expired - Fee Related JP3731202B2 (en) | 2000-10-18 | 2000-10-18 | Frost damage prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3731202B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006238767A (en) * | 2005-03-02 | 2006-09-14 | Yanmar Agricult Equip Co Ltd | Frost damage-preventive device |
| CN103563697A (en) * | 2013-11-05 | 2014-02-12 | 江苏大学 | Automatic spray irrigation frost prevention system and method for plants |
| CN103650859A (en) * | 2013-12-04 | 2014-03-26 | 狄正兴 | Rice stubble spring potato groove-expanding soil-hilling anti-frost cultivation method |
| CN105210622A (en) * | 2015-10-09 | 2016-01-06 | 广西壮族自治区农业科学院经济作物研究所 | A kind of Winter potato frost prevention high-yield cultivating method |
| CN107583797A (en) * | 2017-09-15 | 2018-01-16 | 浙江亚特电器有限公司 | A kind of watering can and the white machine of trunk spray using the watering can |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109894298A (en) * | 2019-03-06 | 2019-06-18 | 陈朝阳 | A kind of intelligence forestry robot |
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| JPS5918475A (en) * | 1982-07-23 | 1984-01-30 | Fujiya:Kk | Freezing and frosting damage forecaster |
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| JPS6336865A (en) * | 1986-07-28 | 1988-02-17 | Toshiba Electric Equip Corp | Antifrosting water spraying device |
| JPH01291729A (en) * | 1988-05-20 | 1989-11-24 | Ikuo Kuroiwa | Prevention of frost injury of tea field or the like |
| JPH06225650A (en) * | 1992-12-10 | 1994-08-16 | Karui:Kk | Frost protection management system for orchard |
| JPH07115856A (en) * | 1993-10-21 | 1995-05-09 | Nepon Inc | Method for controlling freezing and frost injury and apparatus therefor |
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|---|---|---|---|---|
| JPS5918475A (en) * | 1982-07-23 | 1984-01-30 | Fujiya:Kk | Freezing and frosting damage forecaster |
| JPS59217071A (en) * | 1983-05-23 | 1984-12-07 | Yoshida Kayoko | Temperature-sensitive non-powered automatic valve unit |
| JPS6336865A (en) * | 1986-07-28 | 1988-02-17 | Toshiba Electric Equip Corp | Antifrosting water spraying device |
| JPH01291729A (en) * | 1988-05-20 | 1989-11-24 | Ikuo Kuroiwa | Prevention of frost injury of tea field or the like |
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| JPH07115856A (en) * | 1993-10-21 | 1995-05-09 | Nepon Inc | Method for controlling freezing and frost injury and apparatus therefor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006238767A (en) * | 2005-03-02 | 2006-09-14 | Yanmar Agricult Equip Co Ltd | Frost damage-preventive device |
| CN103563697A (en) * | 2013-11-05 | 2014-02-12 | 江苏大学 | Automatic spray irrigation frost prevention system and method for plants |
| CN103650859A (en) * | 2013-12-04 | 2014-03-26 | 狄正兴 | Rice stubble spring potato groove-expanding soil-hilling anti-frost cultivation method |
| CN105210622A (en) * | 2015-10-09 | 2016-01-06 | 广西壮族自治区农业科学院经济作物研究所 | A kind of Winter potato frost prevention high-yield cultivating method |
| CN105210622B (en) * | 2015-10-09 | 2018-09-25 | 广西壮族自治区农业科学院经济作物研究所 | A kind of Winter potato frost prevention high yield cultivating method |
| CN107583797A (en) * | 2017-09-15 | 2018-01-16 | 浙江亚特电器有限公司 | A kind of watering can and the white machine of trunk spray using the watering can |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3731202B2 (en) | 2006-01-05 |
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