JP2008199902A - Plant cultivation apparatus in plant cultivation facility - Google Patents

Plant cultivation apparatus in plant cultivation facility Download PDF

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JP2008199902A
JP2008199902A JP2007036123A JP2007036123A JP2008199902A JP 2008199902 A JP2008199902 A JP 2008199902A JP 2007036123 A JP2007036123 A JP 2007036123A JP 2007036123 A JP2007036123 A JP 2007036123A JP 2008199902 A JP2008199902 A JP 2008199902A
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plant
culture solution
tomato
plant cultivation
camera
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JP5277413B2 (en
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Hiroshige Nishina
弘重 仁科
Kotaro Takayama
弘太郎 高山
Kenji Hado
堅治 羽藤
Norikazu Murakawa
昇万 村川
Hiroichi Muta
博一 牟田
Yuzo Ono
雄三 大野
Kazuhiro Yoshida
和弘 吉田
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Iseki and Co Ltd
Ehime University NUC
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Ehime University NUC
Iseki Agricultural Machinery Mfg Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a plant cultivation method and apparatus for automatically cultivating high-quality plants (for instance, with high sugar content). <P>SOLUTION: The method and apparatus includes photographing leaves of plants such as tomato in the middle of growth with a camera 2 at a prescribed position, and determining a wilting degree of the leaves with a CPU 3b, comparing with a reference image data of photographed image data, and supplying water and nutrient to the plants from a culture solution feeder 5 so as to solve wilting based on the wilting degree of the leaves. Furthermore, the method and apparatus includes stopping supply of culture solution to the plants based on a condition that the liquid is discharged from the medium of the plants. The camera 2 is made movable on a rail 12 in a greenhouse 10 to enable wide range tomato cultivation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、植物の栽培施設において、自動的に植物に培養液を供給する給液制御が行える植物の栽培装置に関する。   The present invention relates to a plant cultivation apparatus that can perform liquid supply control for automatically supplying a culture solution to a plant in a plant cultivation facility.

食用植物および鑑賞用植物の栽培は人手にたよる作業が多いにもかかわらず、農業人口の減少と近隣諸国の安い農作物等の輸入等により、日本の農業の将来性が危ぶまれている。この様な背景にもとに農作業の機械化と自動化の研究開発が活発化している。
特に果実、なかでも糖度の高いトマトなど商品価値の高い作物を人手を掛けずに自動的に栽培する技術開発が行われている。 Although the cultivation of edible plants and ornamental plants is a lot of manual work, the future of Japanese agriculture is in danger due to the decline in the agricultural population and the importation of cheap crops in neighboring countries. Against such a background, research and development of mechanization and automation of farm work has become active.
In particular, technology is being developed to automatically cultivate fruits, especially tomatoes with high sugar content, such as tomatoes with high commercial value, without requiring human intervention.

例えば特開２００２−２３８３６１号公報記載のトマトの栽培方法の発明では、給水と施肥方法の工夫と植物の成長に応じた茎の支持方法の工夫により、品質が高く収穫量が多いトマトを栽培する方法が開示されている。
特開２００２−２３８３６１号公報 For example, in the invention of the tomato cultivation method described in Japanese Patent Application Laid-Open No. 2002-238361, tomatoes with high quality and high yield are cultivated by devising water supply and fertilizing methods and devising a stem support method according to plant growth. A method is disclosed.
JP 2002-238361 A

前記特許文献１記載の発明は、トマトの栽培時の給水などを適切に行い、高品質のトマトを栽培するというものであるが、果実の栽培を自動化したとはいえず、手間の掛かる栽培方法を踏襲するものである。   The invention described in Patent Document 1 is to appropriately supply water during the cultivation of tomatoes and cultivate high-quality tomatoes, but it cannot be said that the cultivation of fruits is automated, and is a laborious cultivation method. Is to follow.

本発明の課題は、自動的に、しかも品質の高い植物（例えば高糖度）を栽培するための植物栽培施設における植物の栽培装置を提供することである。
なお、植物とは果実、蔬菜、穀物等の農作物に限定されない。 An object of the present invention is to provide a plant cultivation apparatus in a plant cultivation facility for cultivating a plant having high quality (for example, high sugar content) automatically.
In addition, a plant is not limited to agricultural crops, such as a fruit, a side dish, and a grain.

本発明の上記課題は、次の解決手段で解決される。
請求項１記載の発明は、生育途中の植物の葉を所定位置から撮影する撮影装置（２）と、該撮影装置（２）で撮影された画像データに基づいて葉の萎れ度合を判定する萎れ判定手段（３ｂ）と、該萎れ判定手段（３ｂ）で判定した萎れ度合に基づいて萎れを解消するべく植物へ培養液を供給する培養液供給装置（５）とを設け、該培養液供給装置（５）は、植物の培地から排液が排出されることに基づいて植物への培養液供給を停止する構成とした植物栽培施設（１０）における植物栽培装置である。 The above-mentioned problem of the present invention is solved by the following means.
According to the first aspect of the present invention, there is provided a photographing device (2) for photographing a leaf of a growing plant from a predetermined position, and a wilting for determining a degree of leaf wilting based on image data photographed by the photographing device (2). A culture medium supply device (5) for supplying a culture solution to a plant to eliminate the wilt based on the degree of wilt determined by the wilt determination device (3b); (5) is a plant cultivation apparatus in the plant cultivation facility (10) configured to stop the supply of the culture solution to the plant based on the drainage from the plant culture medium.

請求項２記載の発明は、前記撮影装置（２）により植物栽培施設（１０）内の各所を撮影できるように、該撮影装置（２）を移動させる移動装置（１２）を設けた請求項１記載の植物栽培施設における植物栽培装置である。
なお、本発明の培養液供給装置（５）から植物に供給される培養液は肥料含有液のみならず水も含まれる。 Invention of Claim 2 provided the moving apparatus (12) which moves this imaging device (2) so that each location in a plant cultivation facility (10) can be image | photographed by the said imaging device (2). It is a plant cultivation apparatus in the described plant cultivation facility.
In addition, the culture solution supplied to a plant from the culture solution supply apparatus (5) of this invention contains not only a fertilizer containing liquid but water.

請求項１記載の発明によれば、撮影装置（２）で撮影された画像データに基づいて葉の萎れ度合を萎れ判定手段（３ｂ）で判定し、この萎れ度合に基づいて萎れを解消するべく植物へ水分、養液などを供給できるので、植物を萎れさせて枯らすようなことを防止でき、ひいては植物に適度な水ストレスを与えながら栽培することができる。更に、植物の培地から排液が排出されることに基づいて植物への水分などの供給を停止する構成としたので、必要以上に水分等の供給がなされることがなく、しかも植物に確実に水分などを供給することができ、植物を萎れさせて枯らすようなことを確実に防止できる。   According to the first aspect of the invention, the degree of leaf wilting is determined by the wilting determination means (3b) based on the image data photographed by the photographing device (2), and the wilting is resolved based on this degree of wilting. Since water, nutrient solution, etc. can be supplied to the plant, it is possible to prevent the plant from withering and withering, and as a result, the plant can be cultivated while applying an appropriate water stress. Furthermore, since the supply of moisture and the like to the plant is stopped based on the drainage of the drainage from the plant medium, the supply of moisture and the like is not made more than necessary, and the plant is reliably supplied. Moisture and the like can be supplied, and it is possible to reliably prevent plants from withering and withering.

また、請求項２の発明によると、請求項１の発明の効果に加えて、移動装置（１２）により撮影装置（２）を移動させて施設（１０）内の各所を撮影できるので、施設（１０）内の局所で萎れが発生していても逸早く萎れを判断でき、ひいては植物を萎れさせて枯らすようなことを確実に防止できる。   Further, according to the invention of claim 2, in addition to the effect of the invention of claim 1, since the photographing device (2) can be moved by the moving device (12) and various places in the facility (10) can be photographed, 10) Even if wilting occurs locally in the region, it can be determined that wilting hastened, and it is possible to reliably prevent the plant from wilting and withering.

本発明の実施例を図面とともに説明する。
図１に本実施例の植物の栽培方法の概念図を示す。植物としてトマトを例に説明するが、本発明はトマトに限定されるものではない。
トマト生育施設（ハウス）１０（図３、図４）内の栽培容器１に植えられて生育中のトマトの葉をトマトの上方から撮影するために、デジタルカメラ（撮影装置）２をハウス１０の適宜の支持部材（図示せず）に支持させてトマトの上方に配置する。またカメラ２で撮影された画像のデジタルデータは制御装置（コンピュータ）３に送信する構成になっている。さらにトマトの植えられた栽培容器１には培養液供給装置５から培養液が供給される。 Embodiments of the present invention will be described with reference to the drawings.
The conceptual diagram of the cultivation method of the plant of a present Example is shown in FIG. Although a tomato is demonstrated as an example as a plant, this invention is not limited to a tomato.
In order to photograph a tomato leaf planted in a cultivation container 1 in a tomato growth facility (house) 10 (FIGS. 3 and 4) from above the tomato, a digital camera (photographing device) 2 is installed in the house 10. It arrange | positions above a tomato, making it support with an appropriate support member (not shown). The digital data of the image taken by the camera 2 is transmitted to the control device (computer) 3. Furthermore, the culture solution is supplied from the culture solution supply device 5 to the cultivation container 1 in which tomatoes are planted.

またトマトの植えられた栽培容器１はガーター６に載せておき、該ガーター６の底部には排液流通口６ａを設けておき、栽培容器１に供給された培養液はトマト生育に利用された後に落下して排液タンク７に回収される。ガーター６の底部に設けた排液流通口６ａには排液感知器９が設置されており、該排液感知器９が排液を検出すると、該検出信号が制御装置３に送信され、制御装置３は培養液供給装置５から栽培容器１への培養液の供給を停止させる。
なお、上記デジタルカメラ２は、その他の用途のためのハウス１０内に設置されるカメラをタイムシェアリングしながら利用することもできる。 Moreover, the cultivation container 1 in which the tomato was planted was placed on a garter 6, and a drainage circulation port 6 a was provided at the bottom of the garter 6, and the culture solution supplied to the cultivation container 1 was used for tomato growth. It falls later and is collected in the drainage tank 7. A drainage sensor 9 is installed in the drainage flow port 6a provided at the bottom of the garter 6, and when the drainage sensor 9 detects drainage, the detection signal is transmitted to the control device 3 for control. The device 3 stops the supply of the culture solution from the culture solution supply device 5 to the cultivation container 1.
The digital camera 2 can also be used while time sharing a camera installed in the house 10 for other purposes.

また、一回の培養液のトマトへの供給量は植物に応じてそれぞれ適切な量とするが、トマトの場合は一個の栽培容器１に対して５０から２００ｍｌとする。
トマトの葉の萎れ度合を判定する萎れ判定は制御装置３の萎れ度合判定手段である中央演算装置（ＣＰＵ）３ｂで行うが、ＣＰＵ３ｂによる葉の萎れ度合の判定は図２に示すフローチャートに従って行う。 Moreover, although the supply amount to one tomato of a culture solution shall be respectively an appropriate quantity according to a plant, in the case of a tomato, it shall be 50-200 ml with respect to one cultivation container 1. FIG.
The wilt determination for determining the degree of wilt of tomato leaves is performed by a central processing unit (CPU) 3b which is a wilt degree determination means of the control device 3, and the determination of the degree of leaf wilt by the CPU 3b is performed according to the flowchart shown in FIG.

図２に示すフローで、ステップ１でカメラ２で撮影した画像が制御装置３内の画像入力装置３ａに入力されると、ステップ２で葉の上方から撮影した画像を２値化したデータとしてトマトの葉の投影面積を制御装置３内のＣＰＵ３ｂと記憶装置３ｃを用いて算出する。   In the flow shown in FIG. 2, when the image captured by the camera 2 in step 1 is input to the image input device 3 a in the control device 3, the image captured from above the leaves in step 2 is binarized data as tomatoes. The projected area of the leaf is calculated using the CPU 3b and the storage device 3c in the control device 3.

上記トマトの上方からの投影面積は葉の投影面積を正確に算出する必要はなく、たとえば葉に特定の色に対応する画素の数を求めれば足りる。撮影された各画像に対して投影面積を求めてもよく、一定の時間内に撮影された複数の画像を平均化した上で投影面積を求めてもよい。   The projected area from above the tomato does not need to accurately calculate the projected area of the leaf. For example, it is sufficient to obtain the number of pixels corresponding to a specific color on the leaf. The projected area may be obtained for each photographed image, or the projected area may be obtained after averaging a plurality of images photographed within a certain time.

次にステップ３ではステップ２で求めたトマトの葉の投影面積の記憶装置３ｃ中に予め設定されている最大の投影面積に対する比率を求める。ステップ４では前記投影面積比に基づき給液をすべきかどうかを判断する。例えば、７５％を給液基準値とし、投影面積比がこの給液基準値を下回るか否かを基準とすれば、簡単に判断することができる。さらに、投影面積比の時間変化率（微分量）や時間積分量も判断材料に加えても良い。このように所定の給液基準値（７０〜９０％が望ましい）を葉の萎れ度合の判定の目安とする。   Next, in step 3, the ratio of the projected area of the tomato leaf obtained in step 2 to the maximum projected area preset in the storage device 3c is obtained. In step 4, it is determined whether or not to supply liquid based on the projected area ratio. For example, if 75% is used as the liquid supply reference value, and whether or not the projected area ratio is lower than the liquid supply reference value is used as a reference, the determination can be made easily. Furthermore, the time change rate (differential amount) and the time integration amount of the projected area ratio may be added to the determination material. Thus, a predetermined liquid supply reference value (preferably 70 to 90%) is used as a standard for determining the degree of leaf deflation.

トマトに対する給液を不要と判断すれば、画像入力のステップ１へ戻る。給液を必要と判断すれば、ステップ５で給液信号を給液信号出力装置３ｄに出力し、該給液信号の出力によって培養液供給装置５のポンプ５ａを作動して、トマトに給液を行う。そして、そのときの投影面積の値を最大投影面積として記憶装置３ｃでの最大投影面積を更新する。   If it is determined that the liquid supply to the tomato is unnecessary, the process returns to step 1 of image input. If it is determined that the liquid supply is necessary, a liquid supply signal is output to the liquid supply signal output device 3d in step 5, and the pump 5a of the culture liquid supply device 5 is operated by the output of the liquid supply signal to supply liquid to the tomato. I do. Then, the maximum projected area in the storage device 3c is updated with the value of the projected area at that time as the maximum projected area.

トマトの葉の萎れ度合の判定で、培養液を供給する必要があると、前述のように所定量の培養液を供給するが、一価の培養液の供給で萎れが回復していないと判定されると、一定時間毎（例えば１０〜２０分毎）に萎れ度合いの判定を行い、萎れが無くなり正常値（９８〜１００％）に戻るまで、給液を繰り返す。   When determining the degree of wilt of tomato leaves, if it is necessary to supply a culture solution, a predetermined amount of the culture solution is supplied as described above, but it is determined that the wilt has not been recovered by supplying a monovalent culture solution. Then, the degree of wilting is determined every predetermined time (for example, every 10 to 20 minutes), and the liquid supply is repeated until the wilting disappears and returns to a normal value (98 to 100%).

一度に大量の給液を行うと、根圏の変化が大きくなり、根の病気、生理障害等の起因になるため、培養液の所定量を少しずつ供給することでストレスを与えつつも、急激な変化を抑制することで栽培期間を長くすることが可能になる。   If a large amount of liquid is supplied at once, the change in the rhizosphere will increase, causing root diseases, physiological disorders, etc. It is possible to lengthen the cultivation period by suppressing the change.

また、図１に示すデジタルカメラ（撮影装置）２によりトマト生育施設内の各所を撮影できるように、該カメラ２を移動させる移動装置をハウス１０内のカメラ支持部材に設ける。図３（図３（ａ）の側面図と図３（ｂ）の平面図）はハウス１０内のラチス１１の下にレール１２を設け、またカメラ２にはレール１２上を移動できるアクチュエータ（図示せず）を連結している。また、レール１２上を移動するカメラ２の撮影点を予め設定しておき、レール１２の近傍の要所要所のカメラ撮影点となる位置にカメラ２が接近したことを検出する近接センサ（図示せず）を配置している。   Further, a moving device for moving the camera 2 is provided on the camera support member in the house 10 so that the digital camera (photographing device) 2 shown in FIG. 3 (a side view of FIG. 3 (a) and a plan view of FIG. 3 (b)), a rail 12 is provided under the lattice 11 in the house 10, and the camera 2 has an actuator (see FIG. (Not shown). Also, a proximity sensor (not shown) detects that the camera 2 has moved in advance on the rail 12 and detects that the camera 2 has approached a position to be a camera shooting point at a necessary location near the rail 12. Z).

こうして、レール１２上を移動するカメラ２が近接センサを配置された特定位置の近傍に来ると、当該特定位置でのトマトの画像を繰り返し撮影することができるので、トマトの葉の萎れ度合を判定することができる。
なお、カメラ２の移動時には撮影しないで、撮影点は固定しており、撮影点の近傍に設けた近接センサがカメラ２を検知して初めて撮影が可能となる。 Thus, when the camera 2 moving on the rail 12 comes in the vicinity of the specific position where the proximity sensor is arranged, the tomato image at the specific position can be repeatedly taken, so the degree of tomato leaf wilting is determined. can do.
Note that, when the camera 2 is moved, no shooting is performed, and the shooting point is fixed, and shooting is possible only when the proximity sensor provided in the vicinity of the shooting point detects the camera 2.

図４にはハウス１０内のラチス１１の下に矩形レール１２を設け、またカメラ２を矩形レール１２上を移動できるようにし、かつ矩形レール１２にカメラ２を設置した実施例を示す。図４（ａ）にはハウス１０内の平面図を示し、図４（ｂ）には図４（ａ）の矩形レール１２部分の拡大図を示す。カメラ２には近接センサ１４を搭載させておき、矩形状のレール１２の各コーナ部分に近接センサ１４が検知できる反射板１５をそれぞれ配置している。
従って、デジタルカメラ２がレール１２のコーナ部に近づくと、近接センサ１４が反射板１５を検知するので、カメラ２は、移動を停止する。カメラ２が停止するとトマトの葉をカメラ２が撮影し、その場で待機する。 FIG. 4 shows an embodiment in which a rectangular rail 12 is provided under the lattice 11 in the house 10, the camera 2 can be moved on the rectangular rail 12, and the camera 2 is installed on the rectangular rail 12. 4A shows a plan view of the inside of the house 10, and FIG. 4B shows an enlarged view of the rectangular rail 12 portion of FIG. 4A. A proximity sensor 14 is mounted on the camera 2, and a reflection plate 15 that can be detected by the proximity sensor 14 is disposed at each corner portion of the rectangular rail 12.
Therefore, when the digital camera 2 approaches the corner portion of the rail 12, the proximity sensor 14 detects the reflecting plate 15, so that the camera 2 stops moving. When the camera 2 stops, the camera 2 takes a picture of the tomato leaf and waits on the spot.

次いで、カメラ２はレール１２上を次のコーナ部に向けて移動して、先ほどと同様にコーナ部で停止した後、トマトの葉の撮影をする。このようにレールコーナ部における定点撮影でトマトの葉の萎れ度合が判定できる。
また、上記トマトの葉の萎れの程度だけでなく、トマトの果実の糖度を予測するシステムにより果実の糖度を予測し、糖度予測値と共に前記培養液供給制御を行っても良い。さらにハウス１０内の温度制御も行うことで高品質トマトを作成するシステムを採用してもよい。 Next, the camera 2 moves on the rail 12 toward the next corner portion, stops at the corner portion as before, and then captures the tomato leaf. In this way, the degree of wilt of tomato leaves can be determined by fixed point photography at the rail corner.
In addition to the degree of tomato leaf wilt, the sugar content of the fruit may be predicted by a system that predicts the sugar content of the tomato fruit, and the culture solution supply control may be performed together with the sugar content prediction value. Furthermore, you may employ | adopt the system which creates a high quality tomato by also controlling the temperature in the house 10. FIG.

目的の糖度のトマトを収穫するために、まず（１）糖度の予測は糖度予測システムを使用する。次いで（２）培養液の制御は、前述した制御方法を使用した植物の投影面積により適切な培養液の量、濃度を供給する。このとき（３）２４時間一定温度にて（１７℃位）となるように温室内環境の温度制御を行う。   In order to harvest tomatoes having a target sugar content, first, (1) sugar content prediction uses a sugar content prediction system. Next, (2) the control of the culture solution supplies an appropriate amount and concentration of the culture solution according to the projected area of the plant using the control method described above. At this time, (3) temperature control of the greenhouse environment is performed so that the temperature becomes constant (about 17 ° C.) for 24 hours.

上記（１）の糖度予測システムは、例えば、発光部及び受光部を備え、発光部からの光を果実に当て、果実からの反射光又は果実を通過したあとの透過光を受光部で受光し、その受光の測定値に基づいて糖度を推測する糖度推測装置を使用して構成することができる。   The sugar content prediction system according to the above (1) includes, for example, a light emitting unit and a light receiving unit, applies light from the light emitting unit to the fruit, and receives light reflected from the fruit or transmitted light after passing through the fruit by the light receiving unit. The sugar content estimation device that estimates the sugar content based on the measured value of the received light can be used.

上記（２）の培養液の供給制御は、ＳＰＡ（Speaking Plant Approach）を使用した植物の投影面積比により適切な培養液の量、又は適切な濃度にした培養液を供給する。併せて、例えば糖度推測装置の測定から得られた栽培果実の成熟時の予測糖度と栽培果実の成熟時の目標として予め設定される目標糖度とを比較し、両者の差異が大きいときは水ストレスを多くかけ、両者の差異が小さいときは水ストレスを抑えるべく、培養液の量又は濃度を設定して培養液を供給する。   In the supply control of the culture solution in (2) above, an appropriate amount of the culture solution or an appropriate concentration of the culture solution is supplied according to the projected area ratio of the plant using SPA (Speaking Plant Approach). In addition, for example, compare the predicted sugar content at the time of ripening of the cultivated fruit obtained from the measurement of the sugar content estimation device with the target sugar content preset as the target at the time of ripening of the cultivated fruit. When the difference between the two is small, in order to suppress water stress, the amount or concentration of the culture solution is set and the culture solution is supplied.

このとき、トマトのカメラ２による投影面積比に基づき適切な濃度の培養液の量を供給する。図５にその例を示す。萎れの程度が大きいと培養液の供給量を多くするが、萎れの程度が小さくなると共に（ａ）培養液の供給量を減らし、（ｂ）培養液の濃度を高くする。なお、培養液の供給量と濃度のうち、いずれかのみを変動させる構成にしてもよい。   At this time, based on the projected area ratio of the tomato camera 2, an appropriate amount of culture solution is supplied. An example is shown in FIG. When the degree of wilting is large, the supply amount of the culture solution is increased. However, as the degree of wilting is reduced, (a) the supply amount of the culture solution is decreased, and (b) the concentration of the culture solution is increased. Note that only one of the supply amount and concentration of the culture solution may be varied.

この様にして得られたトマト糖度の予測値に基づいて、目標糖度より低い場合はトマトの前記投影面積比を指標にして、ストレスをかけて給液を行い、目標より高くなる場合、ストレスをかけないように給液を行うことが可能となり、目標糖度のトマトが自動給液により生産可能となる。   Based on the predicted value of the tomato sugar content obtained in this way, when the sugar content is lower than the target sugar content, the projected area ratio of tomato is used as an index, and the liquid is supplied with stress. It is possible to supply liquid without applying it, and tomatoes with the target sugar content can be produced by automatic liquid supply.

また、上記（３）の温室内環境の温度制御は、トマトの葉の温度を表面温度センサで測定して温室内の温度を制御してもよい。 例えば朝方は葉の温度より＋１℃、昼は葉の温度より＋５℃、夕方は葉の温度より＋２℃になるようにトマトにストレスを掛けながら温度制御を行うことで糖度制御に活用する。   The temperature control of the greenhouse environment (3) may control the temperature in the greenhouse by measuring the temperature of tomato leaves with a surface temperature sensor. For example, the temperature is controlled while stressing the tomato so that it is + 1 ° C. from the leaf temperature in the morning, + 5 ° C. from the leaf temperature in the daytime, and + 2 ° C. from the leaf temperature in the evening.

このように、室温を葉の温度より若干高い温度に設定することによりストレスがかかりやすくなり、糖度の予測値とトマトの投影面積比と葉温を培養液の供給制御に反映させることで、きめ細かい給液が可能となり、目標糖度のトマト生産が可能となる。   In this way, it becomes easier to apply stress by setting the room temperature to a temperature slightly higher than the temperature of the leaves, and by reflecting the predicted value of sugar content, the projected area ratio of tomatoes and the leaf temperature in the supply control of the culture solution, it is fine Liquid supply becomes possible, and tomato production with the target sugar content becomes possible.

なお、トマトの場合の培養液中の肥料の主成分は、カリウム、カルシウム、マグネシウム、硝酸態窒素、燐酸等である。また、上述の実施例では、果実としてトマトを例にして詳述したが、これに限られるものではなく、トマト以外の果実に応用してもよい。   In addition, the main components of the fertilizer in the culture solution in the case of tomato are potassium, calcium, magnesium, nitrate nitrogen, phosphoric acid, and the like. Moreover, in the above-mentioned Example, although it explained in full detail taking the tomato as an example as a fruit, it is not restricted to this, You may apply to fruits other than a tomato.

本発明により、生育途中で葉の萎れ度合を主な判定基準として、培養液の供給をこまめに自動的に行うことで所望の品質の植物を収穫することができると共に、栽培の省力化が図れる。   According to the present invention, a plant having a desired quality can be harvested by automatically supplying a culture solution frequently based on the degree of leaf wilting during growth as a main criterion, and labor saving of cultivation can be achieved. .

本発明の実施例の植物の栽培方法の概念図である。It is a conceptual diagram of the cultivation method of the plant of the Example of this invention. 図１に示す植物の栽培方法に用いる葉の萎れ度合の判定を行うフローチャートである。It is a flowchart which performs the determination of the wilting degree of the leaf used for the cultivation method of the plant shown in FIG. 図１に示す植物の栽培方法に用いる葉の萎れ度合の判定手段のハウス内への設置例を説明する図である。It is a figure explaining the example of installation in the house of the judgment means of the degree of leaf wilt used for the cultivation method of the plant shown in FIG. 図１に示す植物の栽培方法に用いる葉の萎れ度合の判定手段のハウス内への他の設置例を説明する図（図４（ａ）は施設内の天井梁部分の平面図、図４（ｂ）は図４（ａ）の矩形レール部分の拡大図）である。The figure explaining the other example of installation in the house of the judgment means of the degree of leaf wilt used for the cultivation method of the plant shown in FIG. 1 (FIG. 4 (a) is a top view of the ceiling beam part in a facility, FIG. FIG. 4B is an enlarged view of the rectangular rail portion of FIG. 図１に示す植物の栽培方法に用いる葉の萎れ度合（葉の投影面積比）に基づき適切な供給量と濃度の培養液を供給する場合の、供給量と濃度の関係を示す図である。It is a figure which shows the relationship between a supply amount and a density | concentration in the case of supplying the culture solution of a suitable supply amount and a density | concentration based on the degree of leaf wilting (projected area ratio of a leaf) used for the cultivation method of the plant shown in FIG.

符号の説明Explanation of symbols

１ 栽培容器 ２ デジタルカメラ（撮影装置）
３ 制御装置（コンピュータ） ３ａ 画像入力装置
３ｂ ＣＰＵ ３ｃ 記憶装置
３ｄ 給液信号出力装置 ５ 培養液供給装置
５ａ ポンプ ６ ガーター
７ 排液タンク ９ 排液感知器
１０ ハウス １１ ラチス
１２ レール １４ 近接センサ
１５ 反射板 1 Cultivation container 2 Digital camera (photographing device)
DESCRIPTION OF SYMBOLS 3 Control apparatus (computer) 3a Image input apparatus 3b CPU 3c Memory | storage device 3d Supply liquid signal output apparatus 5 Culture solution supply apparatus 5a Pump 6 Garter 7 Drain tank 9 Drain sensor 10 House 11 Lattice 12 Rail 14 Proximity sensor 15 Reflection Board

Claims (2)

生育途中の植物の葉を所定位置から撮影する撮影装置（２）と、
該撮影装置（２）で撮影された画像データに基づいて葉の萎れ度合を判定する萎れ判定手段（３ｂ）と、
該萎れ判定手段（３ｂ）で判定した萎れ度合に基づいて萎れを解消するべく植物へ培養液を供給する培養液供給装置（５）とを設け、
該培養液供給装置（５）は、植物の培地から排液が排出されることに基づいて植物への培養液供給を停止する構成とした植物栽培施設（１０）における植物栽培装置。 A photographing device (2) for photographing a leaf of a growing plant from a predetermined position;
A wilt determination means (3b) for determining the degree of wilt of the leaf based on image data photographed by the photographing device (2);
A culture solution supply device (5) for supplying a culture solution to a plant to eliminate the wilt based on the degree of wilt determined by the wilt determination means (3b);
The culture solution supply device (5) is a plant cultivation device in a plant cultivation facility (10) configured to stop supply of a culture solution to a plant based on discharge of drainage from the plant medium. 前記撮影装置（２）により植物栽培施設（１０）内の各所を撮影できるように、該撮影装置（２）を移動させる移動装置（１２）を設けた請求項１記載の植物栽培施設における植物栽培装置。   The plant cultivation in the plant cultivation facility according to claim 1, further comprising a moving device (12) for moving the photographing device (2) so that the photographing device (2) can photograph various places in the plant cultivation facility (10). apparatus.
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