JP2007259817A - Vertically positioned hydroponic cultivation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hydroponic cultivation system capable of changing the water level of nutrient liquid in a cultivation vessel based on information peculiar to a plant installed at the hydroponic cultivation device. <P>SOLUTION: This hydroponic cultivation system equipped with hydroponic cultivation devices 1, 1b , 1c having a cultivation vessel 11, flowing-in means 12 and flowing-out means 13, a server side CPU 211 deciding a unit flow amount which is a flowing-in amount per unit time of the nutrient liquid 3 to be flowed-in to the cultivation vessel 11, a terminal side CPU 221 for controlling the flowing-in means 12 so as to change the water level of the nutrient liquid 3 stored in the cultivation vessel 11, a memory means 212 for memorizing a flowing-in amount table for correlating plant information related to a plant 2 with the unit flowing-in amount and an inputting means 214 for inputting the plant information is provided with that the server side CPU 211 decides the unit flowing-in amount based on the plant information input through the inputting means 214 by referring the flowing-in amount table, and transmits unit flowing-in amount information related to the unit flowing-in amount to the terminal side CPU 221. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hydroponic cultivation system.

  Traditionally, plants have been cultivated in soil. Plants grow by absorbing nutrients from the soil, but not only nutrients, but also pests and bacteria that prevent the growth of the plant and eventually cause the plant to die. Therefore, hydroponics that absorbs the nutrients necessary for plant growth from the nutrient solution by immersing the roots of the plant in a nutrient solution containing water and fertilizer, without using the soil where these pests may grow However, it is widely used for the cultivation of vegetables and houseplants.

  In hydroponics, the nutrient solution is stored in a cultivation tank, and the plant is planted so that the roots are immersed in the nutrient solution of the cultivation tank. Moreover, when the nutrient solution of a cultivation tank reduces by absorption of the nutrient solution by a plant or evaporation of the nutrient solution itself, a nutrient solution is added to a cultivation tank by arbitrary methods. In this way, by soaking the roots of the plant in the nutrient solution, the plant can absorb nutrients necessary for growth from the roots. That is, since plants absorb nutrients only from nutrient solution, management of fertilizer concentration relative to water is very important.

  However, when the water in the nutrient solution evaporates, the concentration of the nutrient solution increases. Therefore, plants that have absorbed such nutrient solution may have excessive nutrients, which may hinder growth. In addition, since the nutrient solution does not flow in the state where the nutrient solution is stored in the cultivation tank, the oxygen in the nutrient solution is reduced, and the root of the plant immersed in such a nutrient solution absorbs oxygen. It cannot be done and causes root rot.

Then, the siphon type cultivation apparatus (patent document 1) which filled the inside of a cultivation box with a granular material, planted a plant in the granular material, supplied nutrient solution, and installed the siphon type drainage pipe in such a cultivation box. Proposed. In this way, by draining the nutrient solution stored in the cultivation box with the siphon-type drainage pipe, for example, even if a constant amount of the nutrient solution is continuously supplied to the cultivation box, the water level of the nutrient solution is a predetermined high level. When it goes up, the nutrient solution in the cultivation box is discharged. That is, the inflow amount per predetermined time is made constant, the nutrient solution is continuously flowed into the cultivation tank, and the drainage amount per predetermined time of the nutrient solution drained by the siphon type drainage pipe is determined for the predetermined time. By increasing the amount of inflow per hit, almost all of the nutrient solution in the cultivation tank is periodically discharged. Thereby, the state where the inside of the cultivation box is filled with the nutrient solution and the state where the nutrient solution is removed are repeated. Therefore, the nutrient solution having a substantially constant concentration can be continuously supplied.
JP-A-10-75671

However, such a siphon type cultivation apparatus repeats the case where the nutrient solution in the cultivation tank is filled and the case where the nutrient solution is not filled in a certain period, and changes the level of the nutrient solution in the cultivation tank. The plant installed in such a siphon type cultivation apparatus absorbs nutrients from the roots when the nutrient solution is filled in the cultivation tank, and absorbs oxygen when the nutrient solution is discharged.
However, such a siphon type cultivation apparatus cannot change a water level according to the information peculiar to the plant installed in the hydroponics cultivation apparatus.
On the other hand, plants grow daily. In addition, the degree of root growth varies depending on the type of plant installed. That is, depending on the state peculiar to the plant installed in the hydroponic cultivation apparatus, the mode of change of the optimal water level in the cultivation tank differs.

  Therefore, it is desired to provide a hydroponic cultivation system that can change the water level of the nutrient solution in the cultivation tank based on the information unique to the plant installed in the hydroponic cultivation apparatus.

  The present invention has been made in view of the above-described problems. The purpose is to provide a hydroponic cultivation system that can change the water level of the nutrient solution in the cultivation tank based on the information unique to the plant installed in the hydroponic cultivation apparatus.

  In order to achieve the above object, the present invention provides the following.

  (1) A cultivation tank for storing a nutrient solution to be absorbed by the plant, an inflow means for allowing the nutrient solution to flow into the cultivation tank, and an outflow means for discharging the nutrient solution in the cultivation tank to the outside of the cultivation tank And a hydroponic cultivation apparatus comprising: an inflow amount determining means for determining a unit inflow amount that is an inflow amount per predetermined time of a nutrient solution that is allowed to flow into the cultivation tank; and storage in the cultivation tank based on the unit inflow amount. Water level control means for controlling the inflow means so as to change the water level of the prepared nutrient solution, storage means for storing an inflow amount table for associating plant information relating to the plant and the unit inflow amount, and inputting the plant information The inflow amount determination means refers to the inflow amount table on the basis of the plant information input by the input means, and the unit inflow amount. Hydroponics system, characterized in that determination, and transmits the unit flow rate information about the unit flow rate to the level control means.

According to the invention of (1), the inflow amount determining means determines the unit inflow amount that is the inflow amount per predetermined time of the nutrient solution to be flown into the cultivation tank of the hydroponic cultivation apparatus including the cultivation tank, the inflow means, and the outflow means. The water level control means changes the water level of the nutrient solution stored in the cultivation tank based on the unit inflow.
Thereby, it becomes possible to change the water level in the cultivation tank of a hydroponic cultivation apparatus based on the unit inflow amount determined by the inflow amount determination means.

The inflow amount determining means determines the unit inflow amount based on the plant information input by the input means with reference to an inflow amount table that associates the plant information related to the plant and the unit inflow amount stored in the storage means. .
Thereby, it becomes possible to specify the plant installed in the hydroponic cultivation apparatus by the input means, and it becomes possible to determine the unit inflow based on the information unique to the plant installed in the hydroponic cultivation apparatus.

  Therefore, the inflow amount determining means determines the unit inflow amount based on the information unique to the plant installed in the hydroponic cultivation apparatus, and the water level control means controls the inflow means based on the unit inflow amount. An inflow means changes the water level of the nutrient solution stored by the cultivation tank by changing the inflow amount of the nutrient solution which flows into a cultivation tank based on this unit inflow amount. Therefore, the water level of the nutrient solution in the cultivation tank can be changed based on the information unique to the plant installed in the hydroponic cultivation apparatus.

  (2) The outflow means is a curved portion that connects the lead-out part from the guide part extending in the reverse direction of the substantially vertical direction in the cultivation tank, a lead part extending in the substantially vertical direction in the culture tank, and the lead part. A siphon portion formed in an inverted U-shape consisting of a top portion, and the inflow amount determining means is a discharge amount per predetermined time of a discharge amount for discharging the nutrient solution of the cultivation tank to the outside of the cultivation tank. The hydroponic cultivation system according to (1), wherein the unit inflow amount is determined to be less than a certain unit discharge amount.

According to the invention of (2), the outflow means includes a siphon portion formed in an inverted U shape including a guiding portion, a leading portion, and a curved top portion connecting the leading portion to the leading portion in the cultivation tank. Provided.
Thereby, for example, when storing the nutrient solution in the cultivation tank, when the nutrient solution flows into the cultivation tank from the inflow unit, and the nutrient solution in the cultivation tank reaches the top of the siphon part of the outflow unit, from the characteristics of the siphon The nutrient solution in the cultivation tank is sucked from the suction port of the outflow means, and discharged from the discharge port of the outflow means to the outside of the cultivation tank.

  Further, when the water level drops to the position where the suction port is disposed, air is sucked together with the nutrient solution, and a sucking sound is generated. This inhalation sound is murky when heard directly and is uncomfortable. However, the siphon part which becomes a generation source of this suction sound is formed in the cultivation tank. Therefore, it is possible to resonate the suction sound inside the cultivation tank and to make the nature of the cultivation tank sound heard outside the cultivation tank a sound that brings comfort, unlike the nature of the suction sound.

  Further, the inflow amount determining means determines a unit inflow amount that is smaller than a unit discharge amount that is a discharge amount per predetermined time of the discharge amount that discharges the nutrient solution of the cultivation tank to the outside of the cultivation tank. Therefore, if the water level of the nutrient solution in the cultivation tank reaches the top of the siphon part, the level of the nutrient solution in the cultivation tank is maintained even if the inflow means continues to feed the nutrient solution of the unit inflow by the control of the water level control means. Falls and generates a cultivation tank sound from the cultivation tank. Further, for example, by increasing or decreasing the unit inflow amount determined by the inflow amount determining means, it is possible to adjust the interval at which the cultivation tank sound is generated.

  (3) The water level control means includes a detecting means for detecting the water level, and when the detecting means detects that the water level has reached a predetermined water level, the amount of nutrient solution discharged to the outside of the cultivation tank The hydroponic cultivation system according to (1), wherein the outflow means is controlled so as to change the temperature.

According to the invention of (3), the water level control means controls the outflow means so as to change the discharge amount of the nutrient solution discharged to the outside of the cultivation tank when the detection means detects that the predetermined water level has been reached. To do.
Therefore, the water level control means controls not only the inflow means but also the outflow means, thereby changing the water level of the nutrient solution stored in the cultivation tank. Therefore, the water level control means can change the water level of the nutrient solution stored in the cultivation tank more precisely.

  (4) The storage means stores an oxygen supply inflow amount table that associates the plant information including the plant type, the unit inflow amount, and the oxygen supply time of the plant root according to the plant type. The hydroponic cultivation apparatus according to any one of (1) to (3), which is characterized.

According to invention of (4), a memory | storage means memorize | stores the oxygen supply inflow amount table which correlates plant information including the kind of plant, unit inflow amount, and the oxygen supply time of the root of the plant according to the kind of plant.
That is, a water level control means determines the unit inflow based on the kind of plant installed in the hydroponic cultivation apparatus, and changes the water level of the nutrient solution in a cultivation tank. Thereby, for example, the nutrient solution in a cultivation tank is made into a predetermined water level only for the time according to the kind of plant installed in the cultivation apparatus, and a nutrient is absorbed from a nutrient solution from the root of this plant. Moreover, oxygen is absorbed by lowering the water level of the nutrient solution in a cultivation tank from the root of a plant only for the time according to the kind of plant installed in the cultivation apparatus.
This makes it possible to manage the plant so that it is more suitable for the type of plant installed in the hydroponic cultivation device. It can improve the umami of vegetables.

  (5) A plant is installed in each, a cultivation tank for storing a nutrient solution to be absorbed by the plant, an inflow means for allowing the nutrient solution to flow into the cultivation tank, and a nutrient solution in the cultivation tank are discharged to the outside of the cultivation tank. A plurality of hydroponic cultivation devices having an outflow means, and an inflow amount that determines a unit inflow amount, which is an inflow amount per predetermined time, of the nutrient solution to be introduced into the cultivation tank for each of the plurality of hydroponic cultivation devices And at least one water level control means for controlling the inflow means so as to change the water level of the nutrient solution stored in the cultivation tank based on the unit inflow amount for each of the plurality of hydroponic cultivation devices. A hydroponic cultivation system comprising: a storage unit that stores an inflow amount table that associates plant information related to the plant and the unit inflow amount; and an input unit that inputs the plant information for each of the plurality of hydroponic cultivation apparatuses. There The inflow rate determining means refers to the inflow rate table based on the plant information input by the input means, determines the unit inflow rate, and sets the unit inflow rate information related to the unit inflow rate to the water level control. The hydroponic cultivation system, wherein the water level control means is connected to the inflow amount determining means via a network.

According to the invention of (5), for each of a plurality of hydroponic cultivation apparatuses each having a cultivation tank, an inflow means, and an outflow means, the amount of nutrient solution to be introduced into the cultivation tank is determined by the inflow amount determination means. A unit inflow which is an inflow is determined, and the water level of the nutrient solution stored in the cultivation tank is changed based on the unit inflow for each of a plurality of hydroponic cultivation devices by at least one water level control means.
Thereby, it becomes possible to change the water level in a cultivation tank for every some hydroponic cultivation apparatus based on the unit inflow quantity for every several hydroponic cultivation apparatus determined by the inflow amount determination means.

Further, the inflow amount determination means refers to an inflow amount table that associates plant information related to plants stored in the storage means and unit inflow amount based on the plant information for each of the plurality of hydroponic cultivation devices input by the input means. To determine the unit inflow.
Thereby, it becomes possible to identify the plant installed in the hydroponic cultivation apparatus for each of the plurality of hydroponic cultivation apparatuses, and based on the information unique to the plant installed in the hydroponic cultivation apparatus, a plurality of hydroponic cultivations It is possible to determine the unit inflow rate for each device.

The water level control means is connected to the inflow rate determining means via a network.
Thereby, for example, even if the distance between one inflow determining means and at least one water level controlling means and the plurality of hydroponic cultivation devices is separated, the inflow determining means and the water level controlling means are connected to the network. For example, the unit inflow information relating to the unit inflow can be transmitted from the inflow determination unit to the water level control unit. The water level control means can change the water level of the nutrient solution stored in the cultivation tank by changing the inflow amount by the inflow means based on the transmitted unit inflow information.

  According to the present invention, the inflow amount determining means determines a unit inflow amount that is an inflow amount per predetermined time of the nutrient solution to be flowed into the cultivation tank of the hydroponic cultivation apparatus including the cultivation tank, the inflow means, and the outflow means, The water level control means changes the water level of the nutrient solution stored in the cultivation tank based on the unit inflow. Thereby, it becomes possible to change the water level in the cultivation tank of a hydroponic cultivation apparatus based on the unit inflow amount determined by the inflow amount determination means. The inflow amount determining means determines the unit inflow amount based on the plant information input by the input means with reference to an inflow amount table that associates the plant information related to the plant and the unit inflow amount stored in the storage means. . Thereby, it becomes possible to specify the plant installed in the hydroponic cultivation apparatus by the input means, and it becomes possible to determine the unit inflow based on the information unique to the plant installed in the hydroponic cultivation apparatus. Therefore, the inflow amount determining means determines the unit inflow amount based on the information unique to the plant installed in the hydroponic cultivation apparatus, and the water level control means controls the inflow means based on the unit inflow amount. An inflow means changes the water level of the nutrient solution stored by the cultivation tank by changing the inflow amount of the nutrient solution which flows into a cultivation tank based on this unit inflow amount. Therefore, the water level of the nutrient solution in the cultivation tank can be changed based on the information unique to the plant installed in the hydroponic cultivation apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a conceptual diagram of a hydroponic cultivation system 200 of the present invention.
As shown in FIG. 1, the hydroponic cultivation apparatus 1 in which the plant 2 is installed is connected to a water level management terminal 220, and the water level management terminal 220 is connected to a water level management server 210 via a network 230.

  As shown in FIG. 1, the hydroponic cultivation apparatus 1 cultivates a cultivation tank 11 that stores a nutrient solution 3 that is absorbed by a plant 2, an inflow means 12 that flows the nutrient solution 3 into the cultivation tank 11, and a nutrient solution 3. And outflow means 13 for discharging to the outside of the tank 11. Moreover, the hydroponic cultivation apparatus 1 stores the nutrient solution 3 flowing into the cultivation tank 11, and stores the nutrient solution 3 discharged outside the cultivation tank 11, and an upper portion of the nutrient solution tank 16. And a nutrient solution tank stand 17 that supports the cultivation tank 11. Further, the inflow means 12 of the hydroponic cultivation apparatus 1 is connected to the water level management terminal 220.

  The cultivation tank 11 has a cylindrical shape extending in a substantially vertical direction, and a side wall 112 is erected on the edge of the bottom 111. The cultivation tank 11 is formed of a resin having translucency. A particularly optimal shape of the cultivation tank 11 is a cylindrical shape having an inner diameter of 200 mm and a height of 800 mm.

  The bottom portion 111 is a substantially circular plate-like body, and a through hole 113 through which the outflow means 13 passes is formed at the approximate center of the bottom portion 111. The inner diameter of the through hole 113 is slightly smaller than the outer shape of the outflow means 13. Moreover, the circumference | surroundings of the part in which the through-hole 113 of the bottom part 111 is formed are formed with the rubber material. In addition, oil is applied to the inner wall of the through hole 113.

  The side wall 112 of the cultivation tank 11 is a cylindrical body standing upright in a substantially vertical direction. The side wall 112 is connected to an inlet 121 of the inflow means 12 for allowing the nutrient solution 3 to flow into the cultivation tank.

  A support means 15 for supporting the plant 2 is installed on the upper part of the cultivation tank 11, and the support means 15, the bottom part 111 and the side wall 112 form an internal space of the cultivation tank 11.

  The support means 15 is a plate-like body having a thickness capable of supporting the plant 2, and has substantially the same shape as the inner shape of the side wall 112 of the cultivation tank 11. In addition, a hole slightly smaller than the outer shape of the stem of the plant 2 to be planted in the cultivation tank 11 is formed at the approximate center of the support means 15. The support means 15 is made of, for example, urethane resin. In addition, the support means 15 should just be a raw material which can penetrate the plant root 21 below, for example, a net | network etc. can be used.

  The inflow means 12 includes an inflow port 121 connected to the cultivation tank 11, an inflow pipe 122 having one end connected to the inflow port 121, a landing pump 123 to which the other end of the inflow pipe 122 is connected, Is provided.

  The inflow port 121 is connected to the cultivation tank 11 in a substantially tangential direction inside the side wall 112 of the cultivation tank 11. Moreover, the inflow port 121 is arrange | positioned above the top part 133c of the siphon part 133 of the outflow means 13 mentioned later.

  The inflow pipe 122 is a cylindrical long body. A particularly optimum shape of the inflow pipe 122 is a cylindrical body having an inner diameter of 20 mm.

  The landing pump 123 is electric and is installed at the bottom of the nutrient solution tank 16 to be described later. Further, a filter for preventing the dust floating in the nutrient solution 3 from being sucked is installed at the suction port of the nutrient solution 3 of the landing pump 123.

  Moreover, the landing amount of the landing pump 123 is an inflow amount of nutrient solution to be introduced into the cultivation tank. The landing pump 123 is connected to the water level management terminal 220. Moreover, the landing pump 123 is controlled by the terminal side CPU 221 as a water level control means of the water level management terminal 220 described later so as to change the water level of the nutrient solution stored in the cultivation tank.

  The outflow means 13 is a cylindrical long body. One end side of the outflow means 13 is disposed inside the cultivation tank 11. Moreover, the outflow means 13 penetrates the through-hole 113 formed in the bottom part 111 of the cultivation tank 11 so that a slide is possible, and the other end side of the outflow means 13 is arrange | positioned outside the cultivation tank 11. FIG.

  An inlet 131 for sucking the nutrient solution 3 in the cultivation tank 11 is formed on one end side of the outflow means 13. Further, a discharge port 132 for discharging the nutrient solution 3 sucked from the suction port 131 to the outside of the cultivation tank 11 is formed on the other end side of the outflow means 13. In addition, a siphon portion 133 is formed between the inlet 131 and the outlet 132 of the outflow means 13. The outflow means 13 is made of a translucent material.

The suction port 131 is disposed in the vicinity of the bottom 111 in the cultivation tank 11 toward the bottom 111.
The discharge port 132 is arrange | positioned toward the nutrient solution tank 16 mentioned later on the outer side of the cultivation tank 11, and the downward direction of the siphon part 133 mentioned later.

  The siphon portion 133 is formed in an inverted U shape below the support means 15 installed in the cultivation tank 11. The siphon portion 133 is made of an elastic material. Moreover, the siphon part 133 extends in the reverse direction of the substantially vertical direction in the cultivation tank 11 and leads to the suction port 131, and the lead-out part extends in the substantially vertical direction in the cultivation tank 11 and toward the discharge port 132. 133b, and a curved top portion 133c that connects the lead-out portion 133a to the lead-out portion 133b. A particularly optimum distance from the bottom 111 to the top 133c of the cultivation tank 11 is 700 mm.

  The nutrient solution tank 16 is a box-shaped body whose upper surface is open, and a side wall of the rectangular plate-shaped body is erected on the edge of the bottom of the rectangular plate-shaped body. The nutrient solution tank 16 is made of a translucent material.

  The nutrient solution tank mount 17 is a plate-like body and is installed so as to cover approximately half of the upper surface of the nutrient solution tank 16. In addition, a concave portion having a shape slightly larger than the outer diameter of the bottom of the cultivation tank 11 is formed in a substantially central portion of the nutrient solution tank mount 17. In addition, a hole into which the outflow means 13 arranged outside the cultivation tank 11 can be inserted is provided in the concave portion of the nutrient solution tank mount 17. That is, the cultivation tank 11 is detachably installed on the nutrient solution tank mount 17.

The flow of the nutrient solution 3 of the hydroponic cultivation apparatus 1 will be described with reference to FIG.
FIG. 2 is a partial cross-sectional view of the hydroponic cultivation apparatus 1 showing changes in the water level of the nutrient solution in the cultivation tank 11.

  As shown in FIG. 2, the inflow means 12 is connected from the inlet 121 of the inflow means 12 connected to the side wall 112 of the cultivation tank 11 by the terminal-side CPU 221 as a water level control means described later of the water level management terminal 220 described later. A nutrient solution 3 having a unit inflow amount, which is an inflow amount per predetermined time determined by a server-side CPU 211 as an inflow amount determination means described later, is caused to flow into the cultivation tank 11. The inflow port 121 is connected to the side wall 112 in a substantially tangential direction inside the side wall 112 of the cylindrical body. Therefore, the nutrient solution 3 flows down while rotating along the side wall 112.

  As shown in FIG. 2, the nutrient solution 3 that has flowed in from the inflow unit 12 is stored from the bottom 111 of the cultivation tank 11, up to a water level 32 that is an arrangement position of the top portion 133 c of the siphon portion 133 formed in the outflow unit 13. Stored. Then, the nutrient solution 3 is sucked from the suction port 131 of the outflow means 13 by the siphon effect of the siphon part 133 and discharged from the discharge port 132 of the outflow means 13 to the outside of the cultivation tank 11. Then, since there is more outflow amount of the outflow means 13 than inflow amount of the inflow means 12, the water level of the nutrient solution 3 in the cultivation tank 11 also falls gradually. Thereafter, the water level of the nutrient solution 3 drops to the water level 33 where the suction port 131 of the outflow means 13 is disposed. Then, the outflow means 13 sucks air from the suction port 131 and cannot keep the siphon effect. Therefore, the nutrient solution 3 is not discharged to the outside of the cultivation tank 11.

  Moreover, the nutrient solution 3 discharged | emitted from the discharge port 132 of the outflow means 13 to the outer side of the cultivation tank 11 flows down into the nutrient solution tank 16, and is stored. Thereafter, the nutrient solution 3 stored in the nutrient tank 16 is sucked up by the landing pump 123 of the inflow unit 12 and again through the inflow pipe 122 of the inflow unit 12 from the inlet 121 of the inflow unit 12. Is flowed into. In this way, by circulating the nutrient solution 3, the nutrient solution 3 does not stay in the hydroponic cultivation apparatus 1, so that the concentration of the nutrient solution 3 can be kept constant. Furthermore, since the hydroponic cultivation apparatus 1 circulates the nutrient solution 3 in the vertical direction, the installation space can be reduced.

  Further, due to the siphon effect of the siphon part 133, the air is sucked from the suction port 131 of the outflow means 13 and discharged from the discharge port 132 of the outflow means 13 to the outside of the cultivation tank 11. Then, the water level of the nutrient solution 3 falls to the water level 33. Then, the outflow means 13 sucks air and generates a suction sound. This suction sound resonates in the cultivation tank 11, and the sound that can be heard outside the cultivation tank 11 changes to a cultivation tank sound that has a different sound property from the suction sound.

Next, the hydroponic cultivation apparatus 1b of the hydroponic cultivation system 200 will be described with reference to FIG.
FIG. 3 is a perspective view of the hydroponic cultivation apparatus 1 b of the hydroponic cultivation system 200.

As shown in FIG. 3, the hydroponic cultivation apparatus 1 b cultivates the cultivation tank 11 that stores the nutrient solution 3 to be absorbed by the plant 2, the inflow means 12 that flows the nutrient solution 3 into the cultivation tank 11, and the nutrient solution 3. And outflow means 14 for discharging to the outside of the tank 11. The hydroponics apparatus 1 b stores the nutrient solution 3 flowing into the cultivation tank 11, and stores the nutrient solution 3 that is discharged to the outside of the cultivation tank 11, and an upper portion of the nutrient tank 16. And a nutrient solution tank stand 17 that supports the cultivation tank 11. Moreover, the detection means 260 is installed in the cultivation tank 11. In addition, the inflow unit 12, the outflow unit 14, and the detection unit 260 of the hydroponic cultivation apparatus 1 b are connected to the water level management terminal 220.
In addition, description about the same structure as the above-mentioned hydroponics apparatus 1 is abbreviate | omitted.

The outflow means 14 is a cylindrical long body.
On one end side of the outflow means 14, an inlet 141 for sucking the nutrient solution 3 in the cultivation tank 11 is formed. Further, a discharge port 142 for discharging the nutrient solution 3 sucked from the suction port 141 to the outside of the cultivation tank 11 is formed on the other end side of the outflow means 14.

The suction port 141 is disposed in the vicinity of the bottom portion 111 in the cultivation tank 11 so as to face substantially vertically upward.
In addition, the suction port 141 is provided with a suction port valve 141a. This inlet valve 141a can be opened and closed by the control of the terminal side CPU 221 as a water level control means described later of the water level management terminal 220.

  The discharge port 132 is disposed outside the cultivation tank 11 and toward the nutrient solution tank 16.

  The detection means 260 includes a detection sensor 263, a detection line 262 having one end connected to the detection sensor 263, and a detection float 261 connected to the other end of the detection line 262.

The detection sensor 263 is fixed to the bottom 111 of the cultivation tank 11, and a detection line 262 is connected to the surface of the detection sensor 263.
The detection line 262 is a filament formed of nylon.
The detection float 261 is a substantially spherical body and is made of a vinyl chloride resin. Further, the other end of the detection line 262 is connected to the outer surface of the detection float 261.

Next, the flow of the nutrient solution 3 of the hydroponic cultivation apparatus 1b will be described.
The inflow means 12 is determined by a server-side CPU 211 as an inflow amount determining means described later from the inlet 121 of the inflow means 12 connected to the side wall 112 of the cultivation tank 11 under the control of a water level management terminal 220 described later. The nutrient solution 3 having a unit inflow amount that is an inflow amount per hour is caused to flow into the cultivation tank 11. The nutrient solution 3 introduced from the inflow means 12 is stored from the bottom 111 of the cultivation tank 11. The detection float 261 of the detection sensor 263 floats on the water surface of the nutrient solution 3 while relaxing the detection sensor 263. The detection float 261 rises as the water level of the nutrient solution 3 rises. Thereafter, the water level of the nutrient solution 3 reaches a predetermined water level. Then, the detection line 262 of the detection sensor 263 is pulled by the detection float 261 that floats on the water surface of the nutrient solution 3, and gives a predetermined tension to the detection sensor 263. Then, the detection sensor 263 transmits a water level detection signal to a terminal side CPU 221 described later of the water level management terminal 220. The terminal-side CPU 221 that has detected the water level detection signal controls the outflow means 14 to change the discharge amount of the nutrient solution 3 to be discharged to the outside of the cultivation tank. That is, the terminal side CPU 221 performs control to open the inlet valve 141a. Then, the nutrient solution 3 in the cultivation tank 11 flows down from the inlet 141 toward the outlet 142 due to gravity.

Next, the hydroponic cultivation apparatus 1c of the hydroponic cultivation system 200 will be described with reference to FIG.
FIG. 4 is a perspective view of the hydroponic cultivation apparatus 1 c of the hydroponic cultivation system 200.

  As shown in FIG. 4, the hydroponic cultivation apparatus 1 c connects a plurality of cultivation tanks 11 b having the same functions as the cultivation tank 11 of the above-described hydroponic cultivation apparatus 1 by a connecting unit 20, and thereby a plurality of cultivation tanks 11 b. It is arrange | positioned at the nutrient solution tank mount 17a. This nutrient solution gantry 17a is installed in the upper part of nutrient solution tank 16a for a plurality of cultivation tanks 11b.

Next, the water level management server 210 and the water level management terminal 220 of the hydroponic cultivation system 200 will be described with reference to FIG.
FIG. 5 is a block diagram of the hydroponic cultivation system 200 of the present invention.

  As shown in FIG. 5, in the hydroponic system 200, a water level management server 210 and a plurality of water level management terminals 220 are connected via a network 230. Moreover, the hydroponic cultivation apparatus 1 is connected to one of the plurality of water level management terminals 220. In addition, a hydroponic cultivation apparatus 1 b is connected to one of the plurality of water level management terminals 220. In addition, a hydroponic cultivation apparatus 1 c is connected to one of the plurality of water level management terminals 220.

  The water level management server 210 inputs a server-side CPU 211 as an inflow amount determining means, a storage means 212 for storing an oxygen supply inflow amount table (see FIG. 6) which is an example of an inflow amount table described later, and plant information described later. Input means 214 to be displayed, display means 213 for displaying information necessary for water level management, and a server side 215 for transmitting and acquiring various information. The water level management server 210 is connected to the network 230 via the server side interface 215.

  The server-side CPU 211 determines a unit inflow amount that is an inflow amount per predetermined time of the nutrient solution 3 that flows into the cultivation tank 11. Specifically, the server-side CPU 211 refers to the oxygen supply inflow table (see FIG. 6) for each hydroponic cultivation apparatus connected to the server-side CPU 211 based on the plant information input by the input unit 214. To determine the unit inflow. Further, the server-side CPU 211 determines a unit inflow amount that is smaller than a unit discharge amount that is a discharge amount per predetermined time of a discharge amount for discharging the nutrient solution 3 of the cultivation tank 11 to the outside of the cultivation tank 11. In addition, the server-side CPU 211 performs control to transmit unit inflow information regarding the determined unit inflow to the terminal-side CPU 221 of the water level management terminal 220 described later. In the present embodiment, the inflow amount determining means is exemplified by the CPU, but is not limited to this.

  The storage means 212 is composed of a volatile or non-volatile semiconductor storage element, and is used as a work area for the server-side CPU 211, as well as plant information including the type of plant 2, unit inflow amount, and type of plant 2. An oxygen supply inflow amount table (see FIG. 6) for associating the oxygen supply time of the root of the corresponding plant 2 can be stored, and various programs can be stored.

  The server side interface 215 includes a transmission unit and an acquisition unit, and is an interface that enables communication between the water level management server 210 and the network 230. For example, when the network is the Internet, a protocol such as TCP / IP It has a function to perform communication using. The server-side interface 215 transmits unit inflow information regarding the unit inflow determined by the server-side CPU 211 to the water level management terminal 220 via the network 230 by the transmission unit, and from the water level management terminal 220 by the acquisition unit. The information regarding the transmitted hydroponics apparatus 1, 1b, 1c is acquired.

  The display unit 213 includes a monitor device, a speaker, and the like, and displays plant information and the like to be input by the input unit 214 described later as information necessary for water level management in a form that is easy for the operator of the water level management server 210 to understand.

  The input unit 214 receives input from the operator to the water level management server 210, and generally includes a keyboard and a mouse, and receives input of plant information including plant types.

  The water level management terminal 220 includes a terminal side CPU 221 as a water level control means and a terminal side interface 222. The water level management terminal 220 is connected to the water level management server 210 via the network 230.

  The terminal side CPU 221 controls the inflow means 12 based on the unit inflow information acquired from the water level management server 210. Moreover, the terminal side CPU 221 controls the outflow means 14 based on the detection signal of the detection means 260 of the hydroponic cultivation apparatus 1b. Specifically, the terminal-side CPU 221 is stored in the cultivation tank 11 based on the unit inflow determined by the server-side CPU 211 of the water level management server 210 for each of the plurality of hydroponic cultivation devices connected to the terminal-side CPU 221. The inflow means 12 is controlled so as to change the water level of the nutrient solution 3. In addition, when the detection unit 260 detects that the water level has reached the predetermined level, the terminal-side CPU 221 changes the amount of the nutrient solution 3 to be discharged to the outside of the cultivation tank 11 so as to change the suction port of the outflow unit 14. The opening / closing operation of the valve 141a is controlled. In the present embodiment, the water level control means is exemplified by the CPU, but is not limited thereto.

  The terminal-side interface 222 includes a transmission unit and an acquisition unit, and is an interface that enables communication between the water level management terminal 220 and the network 230. For example, when the network is the Internet, the terminal-side interface 222 has a function of performing communication using a protocol such as TCP / IP. The terminal-side interface 222 transmits information related to the hydroponic cultivation apparatuses 1, 1b, and 1c to the water level management server 210 via the network 230 by the transmission unit, and is transmitted from the water level management server 210 by the acquisition unit. The unit inflow information regarding the unit inflow determined by the server-side CPU 211 is acquired.

The oxygen supply inflow amount table stored in the storage unit 212 will be described with reference to FIG.
FIG. 6 is an oxygen supply inflow table stored in the storage unit 212 shown in FIG.

  As shown in FIG. 6, the oxygen supply inflow amount table associates plant information including plant types, unit inflow amounts, and plant root oxygen supply times according to the plant types. Furthermore, the oxygen supply inflow amount table is also associated with the number of days of cultivation and the unit discharge amount. Further, the unit inflow amount is associated with the unit discharge amount so as to be smaller.

  The kind of plant is the kind of plant installed in the hydroponic cultivation apparatus. Specifically, ivy or the like that is an evergreen species, spinach or the like that is a vegetable suitable for hydroponics is stored in advance. The number of days of cultivation is indicated by the number of days, and is the number of days that have elapsed since the plant was installed in the hydroponic cultivation apparatus 1, 1b, 1c. The oxygen supply time of the plant root is indicated by the number of minutes per hour, and is the oxygen supply time required by the plant root 21 according to the type of plant and the number of days of cultivation. The unit inflow amount is indicated by an inflow amount per minute (L), and is an inflow amount per predetermined time of the nutrient solution 3 that flows into the cultivation tank 11 by the inflow means 12. The unit discharge amount is indicated by the outflow amount per minute (L), and is the discharge amount per predetermined time for discharging the nutrient solution 3 in the cultivation tank 11 to the outside of the cultivation tank 11 by the outflow means 13 and 14.

The plant information displayed on the display unit 213 and input by the input unit 214 will be described with reference to FIG.
FIG. 7 is a front view for explaining the display screen of the display means 213.

  As shown in FIG. 7, the plant information displayed on the display means 213 includes characters “hydroponic cultivation apparatus number”, an input box 213 a that can be input by the input means 214, characters “plant type”, and input means. An input box 213b that can be input by 214, an input box 213c that can be input by the input means 214, and the characters "Elapsed cultivation days" and "Day".

The operation of the water level management server 210 will be described with reference to FIG.
FIG. 8 is a flowchart showing a control flow of the water level management server 210.

  As shown in FIG. 8, the server-side CPU 211 as the inflow amount determining means of the water level management server 210 receives the input of the plant type as the plant information from the input means 214 by the processing of step S10, and is input the plant information Is stored in a predetermined area of the storage means 212. Further, when the hydroponics apparatus number and the elapsed cultivation days are also input, these pieces of information are also stored in a predetermined area of the storage unit 212. When the process of step S10 ends, the server side CPU 211 moves the process to step S20.

  The server-side CPU 211 refers to the oxygen supply inflow table stored in the storage unit 212 by the process of step S20. When the process of step S20 ends, the server side CPU 211 moves the process to step S30.

  The server-side CPU 211 calculates the oxygen supply time of the root of the plant from the oxygen supply inflow amount table referenced in the process of step S20 based on the plant information stored in the storage unit 212 in the process of step S10 by the process of step S30. . When the process of step S30 ends, the server side CPU 211 moves the process to step S40.

  The server-side CPU 211 determines a unit inflow amount from the oxygen supply time of the plant root calculated in the process of step S30 by the process of step S40. When the process of step S40 ends, the server side CPU 211 moves the process to step S50.

  The server side CPU 211 sends the information on the unit inflow determined in the process of step S40 to the terminal side CPU 221 as the water level control means of the water level management terminal 220 via the network 230 by the server side interface 215 by the process of step S50. On the other hand, send. The server-side CPU 211 ends this routine when the process of step S50 ends.

The operation of the water level management terminal 220 will be described with reference to FIG.
FIG. 9 is a flowchart showing a control flow of the water level management terminal 220.

  As shown in FIG. 9, the terminal side CPU 221 as the water level control means of the water level management terminal 220 acquires information on the unit inflow amount transmitted from the server side CPU 211 by the process of step S100. When the process of step S100 ends, the terminal side CPU 221 moves the process to step S200.

  The terminal-side CPU 221 controls the inflow means 12 to change the water level of the nutrient solution 3 stored in the cultivation tank 11 based on the information on the unit inflow obtained in the process of step S100 by the process of step S200. The terminal-side CPU 221 ends this routine when the process of step S200 ends.

  As mentioned above, although the Example was described, this invention is not limited to this.

It is a conceptual diagram of the hydroponic cultivation system of this invention. It is a fragmentary sectional view of the hydroponic cultivation apparatus which shows the change of the water level of the nutrient solution in a cultivation tank. It is a perspective view of the hydroponic cultivation apparatus of a hydroponic cultivation system. It is a perspective view of the hydroponic cultivation apparatus of a hydroponic cultivation system. It is a block diagram of the hydroponic cultivation system of this invention. It is an oxygen supply inflow amount table which the memory | storage means shown in FIG. 5 memorize | stores. It is a front view explaining the display screen of a display means. It is a flowchart which shows the control flow of a water level management server. It is a flowchart which shows the control flow of a water level management terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1b, 1c Hydroponic cultivation apparatus 2 Plant 3 Nutrient solution 11 Cultivation tank 12 Inflow means 13, 14 Outflow means 133 Siphon part 133a Guide part 133b Derivation part 133c Top part 200 Hydroponics system 211 Server side CPU
212 storage means 214 input means 221 terminal side CPU
230 network 260 detection means

Claims (5)

A plant is installed and has a cultivation tank for storing a nutrient solution to be absorbed by the plant, an inflow means for allowing the nutrient solution to flow into the cultivation tank, and an outflow means for discharging the nutrient solution of the cultivation tank to the outside of the cultivation tank. Hydroponics equipment,
Inflow amount determining means for determining a unit inflow amount that is an inflow amount per predetermined time of the nutrient solution to be introduced into the cultivation tank;
Based on the unit inflow amount, a water level control means for controlling the inflow means to change the water level of the nutrient solution stored in the cultivation tank,
Storage means for storing an inflow amount table associating plant information about the plant and the unit inflow amount;
An input means for inputting the plant information, and a hydroponic cultivation system comprising:
The inflow rate determining means refers to the inflow rate table based on the plant information input by the input means, determines the unit inflow rate, and sets the unit inflow rate information related to the unit inflow rate to the water level control. Hydroponic cultivation system characterized by transmitting to means. The outflow means includes a guiding portion extending in the reverse direction of the substantially vertical direction in the cultivation tank, a lead-out portion extending in the substantially vertical direction in the cultivation tank, and a curved top portion connecting the lead-out portion from the guiding portion. Having a siphon portion formed in an inverted U-shape,
The inflow amount determining means determines the unit inflow amount smaller than a unit discharge amount that is a discharge amount per predetermined time of a discharge amount for discharging the nutrient solution of the cultivation tank to the outside of the cultivation tank. The hydroponic cultivation system according to claim 1. The water level control means includes a detection means for detecting the water level,
The said outflow means is controlled to change the discharge | emission amount of the nutrient solution discharged | emitted to the outer side of the said cultivation tank, when the detection means detects that the said water level reached the predetermined water level. The hydroponics system described in 1.   The storage means stores an oxygen supply inflow table that associates the plant information including the plant type, the unit inflow amount, and the oxygen supply time of the plant root according to the plant type. The hydroponics system in any one of Claim 1 to 3. A cultivation tank for storing a nutrient solution to be absorbed by the plant, an inflow means for allowing the nutrient solution to flow into the cultivation tank, and an outflow means for discharging the nutrient solution in the cultivation tank to the outside of the cultivation tank. A plurality of hydroponic cultivation devices having,
For each of the plurality of hydroponic cultivation devices, an inflow amount determining means for determining a unit inflow amount that is an inflow amount per predetermined time of the nutrient solution to be introduced into the cultivation tank;
For each of the plurality of hydroponic cultivation devices, based on the unit inflow amount, at least one water level control means for controlling the inflow means to change the water level of the nutrient solution stored in the cultivation tank;
Storage means for storing an inflow amount table associating plant information about the plant and the unit inflow amount;
An input means for inputting the plant information for each of the plurality of hydroponic cultivation devices, and a hydroponic cultivation system comprising:
The inflow rate determining means refers to the inflow rate table based on the plant information input by the input means, determines the unit inflow rate, and sets the unit inflow rate information related to the unit inflow rate to the water level control. To the means,
The hydroponic cultivation system, wherein the water level control means is connected to the inflow amount determination means via a network.

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