KR20220046047A - Control device for nutrient solution irrigation - Google Patents

Abstract

The present invention relates to a nutrient solution irrigation control apparatus to provide a nutrient solution optimized for growth of plants and a control method using the same. According to the present invention, the nutrient solution irrigation control apparatus comprises: a raw water tank unit in which raw water is stored; a first storage unit in which a nutrient solution for major elements is stored and having a first stirrer formed therein; a second storage unit in which a nutrient solution for trace elements is stored and having a second stirrer formed therein; a third storage unit in which nitric acid is stored; a mixing tank mixing the raw water supplied from the raw water tank through a raw water supply pipe, the nutrient solution for major elements supplied from the first storage unit through a first supply pipe, the nutrient solution for trace elements supplied from the second storage unit through a second supply pipe, and the mixing nitric acid supplied from the third storage unit through a third supply pipe, having a third stirrer formed therein, and having one side connected to a bypass pipe; a drain valve provided on the lower side of the mixing tank; an irrigation unit supplying a nutrient solution mixed in the mixing tank to a plurality of media installed for planting or sowing plants in a cultivation area through an irrigation pipe; a plurality of drain pipes provided on the lower side of the medium to discharge the nutrient solution drained from the inside of the medium; a first sensor unit provided inside the bypass pipe to measure electrical conductivity and acidity; a second sensor unit provided in the irrigation pipe to measure electrical conductivity and acidity; and a control unit controlling operations of valves and pumps installed in the raw water supply pipe, the first supply pipe, the second supply pipe, the third supply pipe, and the irrigation pipe, opening and closing of the drain valve, and operations of the first stirrer, the second stirrer, and the third stirrer.

Description

Nutrient solution irrigation control device and control method using the same {Control device for nutrient solution irrigation}

The present invention relates to a nutrient solution irrigation control device and a control method using the same, and the amount of irrigation can be adjusted according to the growth state of a plant.

Nutrient irrigation is a plant cultivation method in which a nutrient solution containing essential elements required for plant growth according to a set composition ratio is supplied for plant growth after planting or sowing plants in various ways without using land. means

Cultivation of plants through nutrient solution irrigation is actively used for mass production of plants as it can precisely and uniformly control the environment of the soil in which the plants are planted, unlike the method of planting and cultivating plants in the land.

In addition, the cultivation method of plants through nutrient solution irrigation is widely used as it is possible to establish a plant cultivation area through nutrient solution irrigation even in a space where plant cultivation is difficult due to securing sufficient land or land pollution.

In particular, it is an important factor to control the amount of watering in consideration of the growth state of plants.

Registered Patent No. 10-1947680

In order to solve the above problems, it is an object to provide a nutrient solution irrigation control device for controlling the amount of irrigation in consideration of the growth state of plants, and a control method using the same.

In order to achieve the above object, a nutrient solution irrigation control apparatus and a control method using the same according to the present invention include: a raw water tank unit in which raw water is stored; a first storage unit in which a nutrient solution for a large amount of elements is stored, and a first stirrer is formed therein; a second storage unit in which a nutrient solution for trace elements is stored, and a second stirrer is formed therein; a third storage unit storing nitric acid; The raw water supplied from the raw water tank unit through the raw water supply pipe, the nutrient solution for the macroelement supplied from the first storage unit through the first supply pipe, the nutrient solution for the trace elements supplied from the second storage unit through the second supply pipe, and the a mixing tank for mixing nitric acid supplied from the third storage unit through a third supply pipe, a third agitator formed therein, and a bypass pipe connected to one side; a drain valve provided below the mixing tank; an irrigation unit supplying the nutrient solution mixed in the mixing tank to a plurality of media installed for planting or sowing of plants in the cultivation area through an irrigation pipe; a drain pipe provided in plurality under the medium through which the nutrient solution drained from the inside of the medium is discharged; a first sensor unit provided inside the bypass tube to measure electrical conductivity and acidity; a second sensor unit provided in the irrigation pipe to measure electrical conductivity and acidity; Valves and pumps installed in the raw water supply pipe, the first supply pipe, the second supply pipe, the third supply pipe, and the irrigation pipe, respectively, the opening and closing of the drain valve, and controlling the operation of the first, second, and third agitators It characterized in that it comprises;

It characterized in that it further comprises; a third sensor unit provided in the drain pipe for measuring electrical conductivity, acidity and ions.

It is provided on the upper portion of the medium, a camera unit for photographing the leaf number, leaf length, leaf width, and plant length of the plant; characterized in that it further comprises.

a light quantity measuring unit provided on the medium to measure the quantity of light; It is characterized in that it further comprises; provided in plurality in the medium, the moisture content measuring unit for measuring the moisture content.

a first step in which the user sets reference values of leaf number, leaf length, leaf width, plant length, nutrient solution irrigation amount, electrical conductivity, and acidity through the control unit; a second step of opening the raw water supply valve, the first supply valve, the second supply valve, and the third supply valve in the control unit to move the set amount of nutrient solution to the mixing tank; a third step of adjusting electrical conductivity and acidity inside the mixing tank; a fourth step of discharging the nutrient solution by opening a drain valve in the control unit when the amount of the nutrient solution in the mixing tank exceeds a set value in the third step; a fifth step of opening the raw water supply valve in the control unit when the electrical conductivity exceeds a set value; a sixth step of opening the first supply valve and the second supply valve in the control unit when the electrical conductivity is less than or equal to a set value; a seventh step of opening the third supply valve in the control unit when the acidity exceeds a set value; an eighth step of opening the raw water supply valve in the control unit when the acidity is less than or equal to a set value; a ninth step of returning to the fifth step when the amount of the nutrient solution in the mixing tank is less than or equal to a set value in the third step; a tenth step of stirring the nutrient solution by operating the third stirrer in the control unit when the light quantity measurement unit value is greater than or equal to the set value; an eleventh step of acquiring leaf number, leaf length, leaf width, and plant length information through a camera unit and storing the information in the control unit; In the eleventh step, the value of ((leaf number information / leaf number reference value) + (leaf length information / leaf length reference value) + (leaf width information / leaf width reference value) + (plant length information / plant length reference value)) / 4 in the control unit is equal to or greater than the set ratio a twelfth step of opening the irrigation valve and supplying the nutrient solution to the medium through the irrigation unit so as to irrigate less than the reference value of the nutrient solution irrigation amount by a set value; a thirteenth step of comparing, in the control unit, the electrical conductivity and acidity measured by the second sensor unit with the electrical conductivity and acidity measured by the first sensor unit; a 14th step of discharging the nutrient solution by opening the drain valve in the control unit when the amount of the nutrient solution in the mixing tank exceeds a set value in the 13th step; a 15th step of opening the raw water supply valve in the control unit when (the first sensor unit electrical conductivity value - the second sensor unit electrical conductivity value) is less than a minimum reference value; a 16th step of opening the first supply valve and the second supply valve in the control unit when (the first sensor unit electrical conductivity value - the second sensor unit electrical conductivity value) exceeds a maximum reference value; a 17th step of opening the third supply valve in the control unit when (the first sensor unit acidity value - the second sensor unit acidity value) is less than the lowest reference value; an 18th step of opening the raw water supply valve in the control unit when (the first sensor unit acidity value - the second sensor unit acidity value) exceeds the highest reference value; a 19th step of returning to the 15th step when the amount of the nutrient solution in the mixing tank is less than or equal to a set value in the 13th step; a twentieth step of stirring the nutrient solution by operating the third agitator in the control unit when the value of the moisture content measurement unit is less than the set value and returning to the eleventh step; In the eleventh step, when the value of ((leaf number information / leaf length reference value) + (leaf length information / leaf length reference value) + (leaf width information / leaf width reference value) + (super length information / plant length reference value)) / 4 in the control unit is less than the set ratio , a 21st step of supplying the nutrient solution to the medium through the irrigation unit by opening the irrigation valve to irrigate the nutrient solution as much as the reference value of the nutrient solution irrigation amount, and returning to the 13th step; In the 21st step, when one or more of flowers or fruits is identified through the camera unit, the irrigation valve is opened to irrigate less than the reference value of the nutrient solution irrigation amount by a set value to supply the nutrient solution to the medium through the irrigation unit, and the 13th step 22 step back to step; and a 23rd step of setting reference values of the electrical conductivity and acidity of the first step according to the electrical conductivity, acidity, and ion of the third sensor unit.

The nutrient solution irrigation control apparatus and the control method using the same according to the present invention have the following effects.

There is an effect of providing a nutrient solution in a state optimized for plant growth.

1 is a block diagram showing a nutrient solution irrigation control apparatus and a control method using the same according to the present invention.

Hereinafter, a preferred embodiment of a nutrient solution irrigation control apparatus and a control method using the same according to the present invention will be described in detail with reference to the accompanying drawings.

In the nutrient solution irrigation control device of the present invention, the raw water tank unit 110 in which raw water is stored, the nutrient solution for large elements is stored, the first storage unit 120 in which the first stirrer 122 is formed, and the nutrient solution for trace elements is stored. Raw water supplied through the raw water supply pipe 111 from the second storage unit 130 in which the second agitator 132 is formed, the third storage unit 140 in which nitric acid is stored, and the raw water tank unit 110 and the nutrient solution for macro-element supplied from the first storage unit 120 through the first supply pipe 121 and the nutrient solution for trace elements supplied from the second storage unit 130 through the second supply pipe 131 and the The nitric acid supplied from the third storage unit 140 through the third supply pipe 141 is mixed, the third agitator 152 is formed therein, and the mixing tank 150 to which the bypass pipe 153 is connected to one side. ), the drain valve 160 provided below the mixing tank 150, and the nutrient solution mixed in the mixing tank 150 through the irrigation pipe 171 through a plurality of installed for planting or sowing of plants in the cultivation area. A irrigation unit 170 for supplying the medium, a drainage pipe 180 provided in plurality under the medium through which the nutrient solution drained from the inside of the medium is discharged, and a method provided inside the bypass pipe 153 to measure electrical conductivity and acidity 1 sensor unit 200, a second sensor unit 300 provided in the irrigation pipe 171 to measure electrical conductivity and acidity, the raw water supply pipe 111, the first supply pipe 121, the second supply pipe ( 131), a valve and a pump installed in the third supply pipe 141 and the irrigation pipe 171, respectively, opening and closing of the drain valve 160, the first stirrer 122, the second stirrer 132, and the third stirrer It is composed of a control unit 400 that controls the operation of 152 .

First, the raw water tank unit 110 is provided. The raw water tank unit 110 is a configuration of a chamber or storage tank in which raw water is stored.

A raw water supply pipe 111 is provided in connection with the raw water tank unit 110 . The raw water supply pipe 111 connects the raw water tank unit 110 and a mixing tank 150 to be described below, and the raw water supply pipe 111 can control a supply state by a raw water supply valve 111V.

Here, the raw water supply valve 111V may use a flow control valve, and may be used in combination with a solenoid valve to control the supply state, but is not limited thereto.

And a raw water supply pump 113 is further provided in the raw water supply pipe 111 . The raw water supply pump 113 is connected to a motor to move the raw water in the raw water tank unit 110 .

And the first storage unit 120 is provided. The first storage unit 120 is a configuration of a chamber or storage tank in which the nutrient solution for a large amount of elements is stored. The nutrient solution for macro-element stored therein means a nutrient solution containing elements required for plant growth in a relatively large amount. Here, the nutrient solution for a large amount of elements can control the electrical conductivity (EC).

Elements essential for plant growth are called essential elements, which are C (carbon), O (oxygen), H (hydrogen), N (nitrogen), P (phosphorus), K (potassium), Ca (calcium), Mg It corresponds to 16 elements: (magnesium), S (sulfur), Fe (iron), Mn (manganese), Cu (copper), Zn (zinc), B (boron), Mo (molybdenum), and Cl (chlorine). .

Here, C (carbon), O (oxygen), H (hydrogen), N (nitrogen), P (phosphorus), K (potassium), Ca (calcium), Mg (magnesium), and S (sulfur) are essential for plant growth. Fe (iron), Mn (manganese), Cu (copper), Zn (zinc), B (boron), Mo (molybdenum), Cl (chlorine) are supplied in small amounts for plant growth. It corresponds to a possible trace element.

A first supply pipe 121 is provided in connection with the first storage unit 120 . The first supply pipe 121 connects the first storage unit 120 and a mixing tank 150 to be described below, and the first supply pipe 121 controls the supply state by the first supply valve 121V. can be adjusted

The first supply valve 121V may use a flow control valve, and may be used in combination with a solenoid valve for supply state control, but is not limited thereto.

And a first stirrer 122 is provided inside the first storage unit 120 . The nutrient solution for a large amount of elements is a mixture of powder and liquid, and deposits are generated over time, so that the concentration of the nutrient solution inside the first storage unit 120 is not uniform, so the concentration must be uniformly adjusted by stirring.

And a first supply pump 123 is further provided in the first supply pipe 121 . The first supply pump 123 is connected to a motor to move the nutrient solution for a large amount of elements in the first storage unit 120 .

And the second storage unit 130 is provided. The second storage unit 130 is a configuration of a chamber or storage tank in which the nutrient solution for trace elements is stored therein. The nutrient solution for trace elements stored therein means a nutrient solution containing elements required for plant growth in relatively small amounts. Here, the nutrient solution for trace elements can control the electrical conductivity (EC).

A second supply pipe 131 is provided in connection with the second storage unit 130 . The second supply pipe 131 connects the second storage unit 130 and the mixing tank 150 to be described below, and the second supply pipe 131 controls the supply state by the second supply valve 131V. can be adjusted

Here, the second supply valve 131V may use a flow control valve, and may be used in combination with a solenoid valve to control the supply state, but is not limited thereto.

And a second stirrer 132 is provided inside the second storage unit 130 . The nutrient solution for trace elements is a mixture of powder and liquid, and deposits are generated over time, so that the concentration of the nutrient solution inside the second storage unit 130 is not uniform, so the concentration must be uniformly adjusted by stirring.

A second supply pump 133 is further provided in the second supply pipe 131 . The second supply pump 133 is connected to a motor to move the nutrient solution for trace elements inside the second storage unit 130 .

And a third storage unit 140 is provided. The third storage unit 140 is a configuration of a chamber or storage tank in which nitric acid is stored. Here, the acidity (pH) of silver nitrate may be adjusted.

A third supply pipe 141 is provided in connection with the third storage unit 140 . The third supply pipe 141 may control a supply state by the third supply valve 141V.

The third supply valve 141V may use a flow control valve, and may be used in combination with a solenoid valve for supply state control, but is not limited thereto.

And a third supply pump 143 is further provided in the third supply pipe 141 . The third supply pump 143 is connected to a motor to move the nitric acid inside the third storage unit 140 .

Additionally, an auxiliary storage unit (not shown) may be further provided. The auxiliary storage unit is a component of a chamber or storage tank in which auxiliary additives for nutrient solution are stored, and the auxiliary additives stored may be components such as functional insecticides for imparting a specific immune function to plants or soil environments through nutrient solution irrigation.

In addition, depending on the implementation, the auxiliary storage unit may be used as an extra storage space for additional replenishment of the nutrient solution for macro elements or the nutrient solution for trace elements.

Here, an auxiliary supply pipe is further provided in connection with the auxiliary storage unit. The auxiliary supply pipe connects the auxiliary storage unit and the mixing tank 150 to be described below, and the auxiliary supply pipe can control the supply state by the auxiliary supply valve. In addition, the auxiliary supply pipe may use a flow control valve, and may be used in combination with a solenoid valve to control the supply state, but is not limited thereto.

A mixing tank 150 is provided by being connected to the raw water tank unit 110 , the first storage unit 120 , the second storage unit 130 , and the third storage unit 140 . The mixing tank 150 is a configuration of a chamber or a storage tank in which the raw water, the nutrient solution for large elements, the nutrient solution for trace elements, and nitric acid are stored therein.

Specifically, the mixing tank 150 is connected to the raw water tank unit 110 through the raw water supply pipe 111 , and the raw water is introduced into the mixing tank 150 by the raw water supply pump 113 . .

The mixing tank 150 is connected to the first storage unit 120 through the first supply pipe 121, and is used for the large amount of elements into the mixing tank 150 by the first supply pump 123. Nutrients are introduced

The mixing tank 150 is connected to the second storage unit 130 through the second supply pipe 131 , and is used for the trace elements into the mixing tank 150 by the second supply pump 133 . Nutrients are introduced

And the mixing tank 150 is connected to the third storage unit 140 through the third supply pipe 141, and the nitric acid is transferred into the mixing tank 150 by the third supply pump 143. is brought in

Here, the mixing tank 150 collects and mixes the components discharged from the raw water tank unit 110 , the first storage unit 120 , the second storage unit 130 , and the third storage unit 140 . do.

A third stirrer 152 is provided inside the mixing tank 150 . Nutrient solutions for macro-elements and trace elements are a mixture of powder and liquid, and deposits are generated over time, so that the concentration of the nutrient solution inside the mixing tank 150 is not uniform, so the concentration must be uniformly adjusted by stirring.

And a bypass pipe 153 is further provided in the mixing tank 150. The bypass pipe 153 is provided on one side of the mixing tank 150, and when the third agitator 152 operates, the mixing The nutrient solution inside the tank 150 circulates through the bypass pipe 153 and the nutrient solution is mixed.

A drain valve 160 is provided below the mixing tank 150 . The drain valve 160 discharges the nutrient solution into the mixing tank 150 . The drain valve 160 allows the nutrient solution inside the mixing tank 150 to be discharged when the electrical conductivity (EC) is equal to or greater than a set value, and when the amount of the nutrient solution in the mixing tank 150 is equal to or greater than the set value, the The nutrient solution inside the mixing tank 150 can be discharged.

Here, the drain valve 160 may use a flow rate control valve, and may be used in combination with a solenoid valve to control the supply state, but is not limited thereto.

A irrigation unit 170 connected to the mixing tank 150 to supply a nutrient solution to the medium is provided. The irrigation unit 170 supplies the nutrient solution mixed in the mixing tank 150 to a plurality of media installed for planting or sowing of plants in the cultivation area through the irrigation pipe 171 .

The irrigation unit 170 has a branched end structure to separately supply the nutrient solution to a plurality of media, and an irrigation valve 171V and a spray nozzle 171N are provided on each branched end to control the irrigation of the nutrient solution. do. The supply state can be controlled by the irrigation valve 171V. The irrigation valve 171V may use a flow rate control valve, and may be used in combination with a solenoid valve for supply state control, but is not limited thereto.

In addition, an irrigation pump 173 is provided in the irrigation pipe 171 . The irrigation pump 173 is connected to a motor to move the nutrient solution inside the mixing tank 150 to the medium.

A drain pipe 180 is provided below the medium. The drain pipe 180 is provided in the medium, respectively, and the nutrient solution drained from the medium is discharged.

A first sensor unit 200 is further provided inside the bypass pipe 153 . The first sensor unit 200 is provided inside the bypass tube 153 to measure the electrical conductivity (EC) and acidity (pH) of the nutrient solution.

Here, when the first sensor unit 200 is located inside the mixing tank 150, the measurement value may vary depending on the level of the nutrient solution, so it is preferably located in the bypass pipe 153, and more accurate value can be measured.

And depending on the electrical conductivity (EC) and acidity (pH), the raw water supply valve (111V), the first supply valve (121V), the second supply valve (131V), the third supply valve (141V) is opened and closed. adjust the

A second sensor unit 300 is further provided in the water pipe 171 . The second sensor unit 300 is provided inside the irrigation tube 171 to measure the electrical conductivity (EC) and acidity (pH) of the nutrient solution supplied to the medium.

And depending on the electrical conductivity (EC) and acidity (pH), the raw water supply valve (111V), the first supply valve (121V), the second supply valve (131V), the third supply valve (141V) is opened and closed. adjust the

And the control unit 400 is provided. The control unit 400 includes the raw water supply valve 111V, the first supply valve 121V, the second supply valve 131V, the third supply valve 141V, the irrigation valve 171V, and the drain. The opening and closing of the valve 160 is controlled, and the flow rate can be adjusted. The control unit 400 controls the power and operation of the raw water supply pump 113 , the first supply pump 123 , the second supply pump 133 , the third supply pump 143 , and the irrigation pump 173 . do. In addition, power and operation of the first agitator 122 , the second agitator 132 , and the third agitator 152 are controlled.

And the control unit 400 stores various types of information. Specifically, the values of the first sensor unit 200 and the second sensor unit 300 are stored, and the electrical conductivity (EC) of the first sensor unit 200 and the second sensor unit 300 is By comparing the pH, the opening and closing of the raw water supply valve 111V, the first supply valve 121V, the second supply valve 131V, and the third supply valve 141V are controlled. Here, by comparing the electrical conductivity (EC) and the acidity (pH) of the first sensor unit 200 and the second sensor unit 300, an accurate nutrient solution can be formulated.

In addition, when the amount of the nutrient solution in the mixing tank 150 exceeds a set value, the opening and closing of the drain valve 160 is controlled.

And a third sensor unit 500 is further provided. The third sensor unit 500 is provided inside the drain tube 180 to measure electrical conductivity (EC), acidity (pH), and ions of the nutrient solution drained from the medium.

Although the amount of ions absorbed by plants from the medium is determined according to the acidity (pH), it is necessary to adjust the composition of the nutrient solution fluidly according to the greenhouse environment such as the growth period, temperature and humidity, the condition of the crop, and the target strategy. Depending on the acidity (pH) of the third sensor unit 500, it can be confirmed how much the plant has absorbed the ions, and the acidity (pH) and ions are not increased simply because the specific ion is lacking in the nutrient solution. The composition of the nutrient solution can be changed by appropriately considering

A camera unit 600 is further provided on the upper portion of the medium. The camera unit 600 photographs the plants grown in the medium. Specifically, the plant photographed by the camera unit 600 is transferred to the control unit 400 . The control unit 400 compares the set image with the photographed image and stores data about the leaf. Then, the control unit 400 calculates the number of leaves, the leaf length, and the leaf width and stores the calculation in the control unit 400 .

And the control unit 400 calculates the height from the upper surface of the medium to the upper end of the plant and stores the plant height in the control unit 400 .

A light quantity measuring unit 700 is further provided on the upper part of the medium. The light quantity measuring unit 700 measures the quantity of light supplied to the medium.

A moisture content measuring unit 800 is further provided inside the medium. The moisture content measurement unit 800 measures the amount of moisture contained in the soil on the medium.

Hereinafter, a nutrient solution irrigation control apparatus and a control method using the same according to the present invention will be described.

First, in the first step, the user sets reference values of leaf number, leaf length, leaf width, plant length, nutrient solution irrigation amount, electrical conductivity (EC), and acidity (pH) through the control unit 400 . In addition, various setting values are stored in the control unit 400 .

In the second step, the control unit 400 opens the raw water supply valve 111V, the first supply valve 121V, the second supply valve 131V, and the third supply valve 141V to a set amount of nutrient solution. is moved to the mixing tank 150 .

Here, the raw water supply valve 111V is opened so that the amount of raw water set by the control unit 400 is supplied, and the raw water supply pump 113 is operated to control the raw water supply pipe 111 from the raw water tank unit 110. Accordingly, the raw water is moved to the mixing tank 150 .

The first supply valve 121V is opened to supply the nutrient solution for a large amount of material in the amount set by the control unit 400 , and the first supply pump 123 is operated to remove the first supply from the first storage unit 120 . The nutrient solution for a large amount of elements is moved to the mixing tank 150 along the supply pipe 121 .

At this time, the control unit 400 operates the first stirrer 122 to uniformly adjust the concentration of the nutrient solution inside the first storage unit 120 .

The second supply valve 131V is opened so that the amount of nutrient solution for trace elements set in the control unit 400 is supplied, and the second supply pump 133 is operated to store the second The nutrient solution for trace elements is moved to the mixing tank 150 along the supply pipe 131 .

At this time, the control unit 400 operates the second stirrer 132 to uniformly adjust the concentration of the nutrient solution inside the second storage unit 130 .

The third supply pipe 141 is opened in the third storage unit 140 by opening the third supply valve 141V so that the amount of nitric acid set by the control unit 400 is supplied, and the third supply pump 143 is operated. ) to move the nitric acid to the mixing tank 150 along the

The third step is to adjust the electrical conductivity (EC) and acidity (pH) inside the mixing tank 150 . The control unit 400 checks the electrical conductivity (EC) and acidity (pH) measured by the first sensor unit (200). And the control unit 400 compares the comparison with reference values of the electrical conductivity (EC) and the acidity (pH) set in the first step.

In the fourth step, when the amount of the nutrient solution in the mixing tank 150 exceeds a set value in the third step, the control unit 400 opens the drain valve 160 to discharge the nutrient solution. Here, raw water or nutrient solution is supplied to the mixing tank 150 while controlling electrical conductivity (EC) and acidity (pH), and an excessive amount is introduced to prevent overflow of the nutrient solution in the mixing tank 150. When the amount of the nutrient solution located inside the tank 150 is excessive, it is preferable to open the drain valve 160 .

In the fifth step, when the electrical conductivity (EC) exceeds the set value, the control unit 400 opens the raw water supply valve (111V). And the control unit 400 operates the raw water supply pump 113, and the raw water is supplied from the raw water tank unit 110 along the raw water supply pipe 111 to the inside of the mixing tank 150 to conduct electrical conductivity (EC). ) decreases.

In the sixth step, when the electrical conductivity (EC) is less than or equal to a set value, the control unit 400 opens the first supply valve (121V). Then, the control unit 400 operates the first supply pump 123 , and the nutrient solution for a large amount of elements flows into the mixing tank 150 along the first supply pipe 121 from the first storage unit 120 . It is supplied to increase the electrical conductivity (EC).

At this time, the control unit 400 operates the first stirrer 122 to uniformly adjust the concentration of the nutrient solution inside the first storage unit 120 .

At the same time, the control unit 400 opens the second supply valve 131V. Then, the control unit 400 operates the second supply pump 133 , and the nutrient solution for trace elements flows into the mixing tank 150 along the second supply pipe 131 from the second storage unit 130 . It is supplied to increase the electrical conductivity (EC).

At this time, the control unit 400 operates the second stirrer 132 to uniformly adjust the concentration of the nutrient solution inside the second storage unit 130 .

In the seventh step, when the acidity (pH) exceeds the set value, the control unit 400 opens the third supply valve (141V). And the control unit 400 operates the third supply pump 143, and the nitric acid is supplied into the mixing tank 150 along the third supply pipe 141 from the third storage unit 140 to produce acidity. (pH) decreases.

In the eighth step, when the pH is below the set value, the control unit 400 opens the raw water supply valve 111V. And the control unit 400 operates the raw water supply pump 113, and the raw water is supplied from the raw water tank unit 110 along the raw water supply pipe 111 to the inside of the mixing tank 150 to obtain an acidity (pH). increases

The ninth step returns to the fifth step when the amount of the nutrient solution in the mixing tank 150 is less than or equal to the set value in the third step.

In the tenth step, when the value of the light quantity measurement unit 700 is equal to or greater than the set value, the control unit 400 operates the third stirrer 153 to stir the nutrient solution. When the amount of light is greater than a certain value, it is necessary to supply the nutrient solution necessary for the growth of the plant.

Here, since the concentration of the nutrient solution inside the mixing tank 150 is not uniform, the third agitator 153 is operated to uniformly adjust the concentration.

In the eleventh step, a plant is photographed through the camera unit 600 . Specifically, the plant photographed by the camera unit 600 is transferred to the control unit 400 . The control unit 400 compares the set image with the photographed image and stores data about the leaf. Then, the control unit 400 calculates the number of leaves, the leaf length, and the leaf width and stores the calculation in the control unit 400 .

And the control unit 400 calculates the height from the upper surface of the medium to the upper end of the plant and stores the plant height in the control unit 400 .

The control unit 400 receives the data captured by the camera unit 600 and stores information about the number of leaves, the leaf length, the leaf width, and the plant length.

In the twelfth step, information on the number of leaves, leaf length, leaf width, and plant length measured by the camera unit 600 in step 11 is compared with reference values of the number of leaves, leaf length, leaf width, and plant length set in the first step.

((leaf number information / leaf length reference value) + (leaf length information / leaf length reference value) + (leaf width information / leaf width reference value) + (leaf length information / leaf length reference value)) The irrigation valve 171V is opened so that water is irrigated less by the set value than the irrigation amount reference value. Then, the irrigation pump 173 is operated to supply the nutrient solution from the mixing tank 150 to the medium through the irrigation pipe 171 .

Here, since the plant is in a state of reproductive growth, it is necessary to induce continued reproductive growth by reducing the amount of nutrient solution irrigation to induce flowers and fruits.

In the 13th step, the control unit 400 compares the electrical conductivity (EC) and acidity (pH) measured by the second sensor unit 300 to the electrical conductivity (EC) and acidity measured by the first sensor unit 200 . (pH). This is to ensure that an accurate nutrient solution can be formulated.

In step 14, when the amount of nutrient solution in the mixing tank 150 exceeds a set value in step 13, the control unit 400 opens the drain valve 160 to discharge the nutrient solution. Here, raw water or nutrient solution is supplied to the mixing tank 150 while controlling electrical conductivity (EC) and acidity (pH), and an excessive amount is introduced to prevent overflow of the nutrient solution in the mixing tank 150. When the nutrient solution inside the tank 150 is excessive, it is preferable to open the drain valve 160 .

In step 15, when (the first sensor unit 200 electrical conductivity value - the second sensor unit 300 electrical conductivity value) is less than the lowest reference value, the control unit 400 opens the raw water supply valve 111V. The electrical conductivity (EC) is excessively high, and it is necessary to reduce the electrical conductivity (EC).

In step 16, when (the electrical conductivity value of the first sensor unit 200 - the electrical conductivity value of the second sensor unit 300) exceeds the highest reference value, in the control unit 400, the first supply valve (121V) and The second supply valve 131V is opened. At this time, it is necessary to increase the electrical conductivity (EC).

In step 17, when (the acidity value of the first sensor unit 200 - the acidity value of the second sensor unit 300) is less than the lowest reference value, the control unit 400 opens the third supply valve 141V. At this time, it is necessary to reduce the acidity (pH).

In step 18, when (the first sensor unit 200 acidity value - the second sensor unit 300 acidity value) is greater than the highest reference value, the raw water supply valve 111V is opened. The acidity (pH) is excessively high, and it is necessary to decrease the acidity (pH).

In step 19, if the amount of nutrient solution in the mixing tank 150 is less than or equal to the set value in step 13, the process returns to step 15.

In step 20, when the value of the moisture content measurement unit 800 is less than the set value, the control unit 400 operates the third stirrer 152 to stir the nutrient solution. Here, since the concentration of the nutrient solution inside the mixing tank 150 is not uniform, the third agitator 150 is operated to uniformly adjust the concentration.

And go back to step 11. When the value measured by the moisture content measurement unit 800 is less than the set value, the medium lacks moisture, and irrigation is required.

In the 21st step, in the 11th step, in the control unit 400 ((leaf number information / leaf length reference value) + (leaf length information / leaf length reference value) + (leaf width information / leaf width reference value) + (plant length information / plant length reference value)) / When the value of 4 is less than the set ratio, the irrigation valve 171V is opened so that the nutrient solution irrigation amount reference value is irrigated, the irrigation pump 173 is operated, and the medium through the irrigation pipe 171 in the mixing tank 150 supply nutrient solution to

Here, since the plant is in a state of vegetative growth, it is necessary to supply a sufficient nutrient solution for growth. Then, it returns to step 13.

In the 22nd step, when any one or more of flowers or fruits is checked through the camera unit 600 in the 21st step, the irrigation valve 171V is opened so that the water is irrigated less than the reference value of the nutrient solution irrigation amount by a set value, and the irrigation is performed. The medium is irrigated from the mixing tank 150 through the irrigation pipe 171 by operating the pump 173 .

The control unit 400 may compare the set image with the photographed image to confirm whether a flower or fruit is generated.

Here, since the plant is in a state of reproductive growth, it is necessary to induce continued reproductive growth by reducing the amount of nutrient solution irrigation to induce flowers and fruits. Then, it returns to step 13.

In the 23rd step, the reference values of the electrical conductivity and the acidity of the first step are set according to the electrical conductivity (EC), the acidity (pH), and the ion of the third sensor unit 500 .

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention can be implemented in other specific forms without changing the technical spirit or essential characteristics of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the above detailed description, and the meaning and scope of the claims and their All changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

110: raw water tank part 111: raw water supply pipe
111V: Raw water supply valve 113: Raw water supply pump
120: first storage unit 121: first supply pipe
121V: first supply valve 122: first stirrer
123: first supply pump 130: second storage unit
131: second supply pipe 131V: second supply valve
132: second agitator 133: second supply pump
140: third storage unit 141: third supply pipe
141V: third supply valve 143: third supply pump
150: mixing tank 152: third agitator
153: bypass pipe 160: drain valve
170: irrigation unit 171: irrigation pipe
171V: Irrigation valve 171N: Injection nozzle
173: irrigation pump 180: drain pipe
200: first sensor unit 300: second sensor unit
400: control unit 500: third sensor unit
600: camera unit 700: light quantity measurement unit
800: moisture content measurement unit

Claims (5)

a raw water tank unit in which raw water is stored;
a first storage unit in which a nutrient solution for a large amount of elements is stored, and a first stirrer is formed therein;
a second storage unit in which a nutrient solution for trace elements is stored, and a second stirrer is formed therein;
a third storage unit storing nitric acid;
Raw water supplied from the raw water tank unit through a raw water supply pipe, a nutrient solution for a macroelement supplied from the first storage unit through a first supply pipe, a nutrient solution for a trace element supplied from the second storage unit through a second supply pipe, and the a mixing tank for mixing nitric acid supplied from the third storage unit through a third supply pipe, a third agitator formed therein, and a bypass pipe connected to one side;
a drain valve provided below the mixing tank;
an irrigation unit supplying the nutrient solution mixed in the mixing tank to a plurality of mediums installed for planting or sowing of plants in the cultivation area through an irrigation pipe;
a drain pipe provided in plurality under the medium through which the nutrient solution drained from the inside of the medium is discharged;
a first sensor unit provided inside the bypass tube to measure electrical conductivity and acidity;
a second sensor unit provided in the irrigation pipe to measure electrical conductivity and acidity;
Valves and pumps installed in the raw water supply pipe, the first supply pipe, the second supply pipe, the third supply pipe, and the irrigation pipe, respectively, the opening and closing of the drain valve, and controlling the operation of the first, second, and third agitators Nutrient irrigation control device comprising a; a control unit. The method of claim 1,
Nutrient water irrigation control device further comprising a; a third sensor unit provided in the drain pipe to measure electrical conductivity, acidity, and ions. The method of claim 1,
Nutrient water irrigation control device, characterized in that it further comprises a; provided on the upper portion of the medium, a camera unit for photographing the leaf number, leaf length, leaf width, and plant length of the plant. The method of claim 1,
a light quantity measuring unit provided on the medium to measure the quantity of light;
Nutrient water irrigation control device, characterized in that it further comprises a; provided in plurality in the medium, the moisture content measuring unit for measuring the moisture content. In the nutrient solution irrigation control device according to claim 1,
a first step in which the user sets reference values of leaf number, leaf length, leaf width, plant length, nutrient solution irrigation amount, electrical conductivity, and acidity through the control unit;
a second step of opening the raw water supply valve, the first supply valve, the second supply valve, and the third supply valve in the control unit to move the set amount of nutrient solution to the mixing tank;
a third step of adjusting electrical conductivity and acidity inside the mixing tank;
a fourth step of discharging the nutrient solution by opening a drain valve in the control unit when the amount of the nutrient solution in the mixing tank exceeds a set value in the third step;
a fifth step of opening the raw water supply valve in the control unit when the electrical conductivity exceeds a set value;
a sixth step of opening the first supply valve and the second supply valve in the control unit when the electrical conductivity is less than or equal to a set value;
a seventh step of opening the third supply valve in the control unit when the acidity exceeds a set value;
an eighth step of opening the raw water supply valve in the control unit when the acidity is less than or equal to a set value;
a ninth step of returning to the fifth step when the amount of the nutrient solution in the mixing tank is less than or equal to a set value in the third step;
a tenth step of stirring the nutrient solution by operating the third stirrer in the control unit when the light quantity measurement unit value is greater than or equal to the set value;
an eleventh step of acquiring leaf number, leaf length, leaf width, and plant length information through a camera unit and storing the information in the control unit;
In the eleventh step, the value of ((leaf number information / leaf length reference value) + (leaf length information / leaf length reference value) + (leaf width information / leaf width reference value) + (plant length information / plant length reference value)) / 4 in the control unit is equal to or greater than the set ratio a twelfth step of opening the irrigation valve and supplying the nutrient solution to the medium through the irrigation unit so as to irrigate less than the reference value of the nutrient solution irrigation amount by a set value;
a thirteenth step of comparing, in the control unit, the electrical conductivity and acidity measured by the second sensor unit with the electrical conductivity and acidity measured by the first sensor unit;
a 14th step of discharging the nutrient solution by opening the drain valve in the control unit when the amount of the nutrient solution in the mixing tank exceeds a set value in the 13th step;
a 15th step of opening the raw water supply valve in the control unit when (the first sensor unit electrical conductivity value - the second sensor unit electrical conductivity value) is less than a minimum reference value;
a 16th step of opening the first supply valve and the second supply valve in the control unit when (the first sensor unit electrical conductivity value - the second sensor unit electrical conductivity value) exceeds a maximum reference value;
a 17th step of opening the third supply valve in the control unit when (the first sensor unit acidity value - the second sensor unit acidity value) is less than the lowest reference value;
an 18th step of opening the raw water supply valve in the control unit when (the first sensor unit acidity value - the second sensor unit acidity value) exceeds the highest reference value;
a 19th step of returning to the 15th step when the amount of the nutrient solution in the mixing tank is less than or equal to a set value in the 13th step;
a twentieth step of stirring the nutrient solution by operating the third stirrer in the control unit when the value of the moisture content measurement unit is less than the set value and returning to the eleventh step;
In the eleventh step, when the value of ((leaf number information / leaf length reference value) + (leaf length information / leaf length reference value) + (leaf width information / leaf width reference value) + (super length information / plant length reference value)) / 4 in the control unit is less than the set ratio , a 21st step of supplying the nutrient solution to the medium through the irrigation unit by opening the irrigation valve to irrigate the nutrient solution as much as the reference value of the nutrient solution irrigation amount, and returning to the 13th step;
In the 21st step, when one or more of flowers or fruits is identified through the camera unit, the irrigation valve is opened to irrigate less than the reference value of the nutrient solution irrigation amount by a set value to supply the nutrient solution to the medium through the irrigation unit, and the 13th step step 22 back to step;
A nutrient solution irrigation control device and a control method using the same, comprising: a 23rd step of setting reference values of the electrical conductivity and acidity of the first step according to the electrical conductivity, acidity, and ion of the third sensor unit.

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