KR20120095756A - Apparatus and method for controlling plant growth in city farm control system - Google Patents

Abstract

PURPOSE: An apparatus and a method for controlling plant growth in a city farm control system are provided to improve the productivity of plants by cultivating the plant in a desired period. CONSTITUTION: A storage(11) stores growth schedule information. The growth schedule information includes a growth prediction model. The growth prediction model indicates a correlation between the environment condition and the plant growth schedule. A farmer inputs cultivation schedule information to an input section(12). A monitoring unit(13) monitors the environment of a city farm. A calculation unit(14) calculates a growth predictive value. A controller(16) controls the environment of the city farm.

Description

Apparatus and Method for controlling plant growth in city farm control system

The present invention relates to plant cultivation, and more particularly, to a plant growth control device and method for controlling the growth of a plant.

Today, as the industry develops and the population increases, the farmland decreases due to the expansion of various factory facilities and the construction of houses. In particular, farmland for cultivating crops due to the use of chemical fertilizers, etc. is urgent, and various plant pollutions are becoming difficult due to the increase of various industrial pollutions. Accordingly, conventionally, a greenhouse cultivation method using a glass greenhouse or a vinyl house has been used to improve the productivity of the plant. This greenhouse cultivation method not only improves the productivity of the plant, but also has the advantage of growing crops regardless of the season.

However, the greenhouse cultivation method has a difficulty that the grower to adjust the appropriate temperature, humidity, sunlight according to the germination conditions, growth conditions, flowering conditions of the plant to be grown. In addition, the greenhouse cultivation method can improve the productivity by reducing the growth period of the plant, but there is a problem that it is difficult to accurately predict or control the completion time of plant growth like the cultivation method in the natural environment.

The present invention is to control the growth of the plant to complete the growth of the plant at the desired shipping time for the plant to be grown.

According to one aspect of the present invention, a plant growth control apparatus in an urban farm control system is disclosed.

A plant growth control apparatus according to an embodiment of the present invention receives a storage unit for storing plant growth schedule information including a growth prediction model indicating a correlation between environmental conditions and a plant growth schedule for each plant, and receives cultivation schedule information desired by a grower. An input unit, a monitoring unit monitoring an environment in an urban farm, a calculating unit calculating the growth prediction value by applying the cultivation schedule information and the monitored environment to the growth prediction model, and the growth prediction value does not match a preset reference value, And a controller configured to control an environment in the urban farm according to a difference between the growth predicted value and the reference value.

According to another aspect of the present invention, a method of controlling plant growth by a plant growth control apparatus in an urban farm control system is disclosed.

Plant growth control method according to an embodiment of the present invention receives the growth schedule information desired by the grower, monitoring the environment in the urban farm, growth schedule value by applying the growth schedule information and the monitored environment to the growth prediction model Estimating the growth prediction model, wherein the growth prediction model indicates a correlation between an environmental condition and a growth schedule of a plant, and when the growth prediction value does not match a preset reference value, the urban farm according to the difference between the growth prediction value and the reference value. Controlling the environment within.

The present invention can control the growth of the plant to complete the growth of the plant at the desired time for the plant to be grown.

In addition, the present invention can improve the productivity of the plant by cultivating the plant at the desired shipment.

1 is a configuration diagram schematically illustrating an urban farming system.
2 is a flowchart illustrating a control method of an urban farm;
3 is a detailed flowchart of step S240;

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In addition, numerals used in the description of the present invention are merely an identifier for distinguishing one component from another.

Also, in this specification, when an element is referred to as being "connected" or "connected" with another element, the element may be directly connected or directly connected to the other element, It should be understood that, unless an opposite description is present, it may be connected or connected via another element in the middle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the same reference numerals will be used for the same means regardless of the reference numerals in order to facilitate the overall understanding.

1 is a configuration diagram schematically illustrating an urban farm control system.

Referring to FIG. 1, the urban farm control system includes a plant growth control device 10, a temperature control device 20, an illumination device 30, a water supply device 40, and a nutrient supply device 50. The urban farm control system may be installed in a greenhouse such as a plastic house. For example, urban farms may be arable land embodied as vinyl houses in the city. At this time, the urban farm may be installed in a state exposed or not exposed to the sun. The plant growth control apparatus 10 monitors the temperature and photoperiod in the urban farm to determine whether the current temperature and photoperiod are suitable, and calculates and outputs a temperature and photoperiod suitable for the growth of the cultivated plant according to the suitability. Can be. At this time, the grower checks the output temperature and photoperiod, and operates the temperature control device 20, the lighting device 30, the water supply device 40 and the nutrient solution supply device 50, the temperature in the urban farm, photoperiod, The amount of water and the amount of nutrient solution can be adjusted. Here, photoperiod means the length of day in which sunlight is present. In addition, the plant growth control device 10 controls the temperature control device 20, the lighting device 10, the water supply device 40 and the nutrient solution supply device 50 to implement the temperature in the urban farm, photoperiod The amount of water supplied and the amount of nutrient solution supplied can be adjusted. Temperature control device 20 is a device for cooling or heating, and controls the temperature in the greenhouse. For example, the temperature control device 20 may be a heating and cooling device, such as a heater, air conditioner. In addition, the temperature control device 20 may have a function of adjusting the concentration of CO 2. The lighting device 30 is a device for irradiating light to plants instead of sunlight. For example, when the urban farm is installed exposed to sunlight, the lighting device 30 can be operated if the light is further required to provide plants after the sunlight disappears. The water supply device 40 supplies water to the urban farm under the control of the plant growth control device 10 or the grower. The nutrient supply device 50 supplies the nutrient solution to the urban farm under the control of the plant growth control device 10 or the grower. Here, the nutrient solution is also called a culture solution by dissolving the inorganic nutrients necessary for the growth of crops in water in accordance with the ratio of the respective absorption amount.

The plant growth control apparatus 10 includes a storage unit 11, an input unit 12, a monitoring unit 13, a calculating unit 14, an output unit 15, and a control unit 16.

The storage unit 11 stores the variety information. The variety information may include growth schedule information according to the plant name and environmental conditions (eg, temperature, photoperiod, light quantity, light intensity, CO ₂ concentration, etc.). For example, the growth schedule information may be plant growth schedule information according to weather conditions accumulated over the past 10 years. That is, the growth schedule information may include germination days, flowering eruption days, flowering days and growth completion dates according to temperature, photoperiod, and the like. Hereinafter, description will be given focusing on the control of the flowering period, which represents the period from the flowering day to the flowering day.

The growth schedule information may include a growth prediction model indicating a correlation between environmental conditions and a plant's growth schedule.

For example, the flowering prediction model calculated by the regression analysis through the experiment can be expressed as Equation 1 below. The flowering prediction model shows the correlation between temperature and photoperiod and flowering time of plants.

[Equation 1]

Here, f is the flowering period from the eruption date to the flowering date, T is the average temperature during the day, and P represents the photoperiod during the day. In addition, a. b and c are constants, which can be derived by performing a regression analysis through experiments.

Looking at Equation 1, if the a + bT + cP value is calculated every day during the flowering period and sums all, it can be seen that the sum is 1.

Test results of growth according to temperature and photoperiod using cineraria are shown in Tables 1 to 3 below. Here, Tables 1 to 3 show flowering periods depending on temperature and photoperiod.

Table 1 below shows the flowering period of Cineraria cv. Venezia.

Temperature (℃) Gwangju period (hours / day) 8 11 14 17 9.7 77.0 78.2 56.8 53.6 13.1 56.8 34.6 16.9 34.8 32.4 24.6 28.2 20.8 37.0 28.0 23.2 22.4 23.8 28.8 24.6 19.0 17.6

Table 2 below shows the flowering period of the Cineraria cv.Star Wars.

Temperature (℃) Gwangju period (hours / day) 8 11 14 17 9.7 94.2 65.4 66.4 65.8 13.1 60.8 59.0 48.6 43.8 16.9 42.0 39.5 35.8 32.6 20.8 37.2 35.2 37.4 38.6 23.8 37.3 34.4 27.6 27.8

Table 3 below shows the flowering period of Cineraria cv. Meteor.

Temperature (℃) Gwangju period (hours / day) 8 11 14 17 9.7 82.6 75.6 64.2 65.2 13.1 64.8 52.0 46.4 45.4 16.9 43.2 38.0 31.0 30.8 20.8 37.6 32.6 24.4 26.0 23.8 32.3 29.8 24.4 22.2

Tables 1 to 3 show that cineraria has the highest growth rate at 23.8 degrees and 17 hours photoperiod.

By using the experimental results as described above, a regression analysis equation such as Equation 1 described above may be derived.

For example, the derived regression equation is as follows.

&Quot; (2) "

Venice:

    (± 0.000827) (± 0.00041) (± 0.000503)

&Quot; (3) "

star Wars:

(± 0.004127) (± 0.000242) (± 0.00024)

&Quot; (4) "

Meteor:

(± 0.002701) (± 0.000205) (± 0.000105)

(± 0.003265) (± 0.000172) (± 0.000252) (± 0.0000133)

The input unit 12 receives an external input required for the operation of the plant growth control device 10. For example, the input unit 12 may receive cultivation schedule information including a plant name of a plant to be grown and a shipment date desired by the grower. Here, the cultivation schedule information may include germination days, eruption days and flowering days according to the shipment date.

The monitoring unit 13 monitors the environment in the urban farm. That is, the monitoring unit 13 includes a temperature sensor and an illuminance sensor to measure temperature and sense light, and calculate the average temperature and photoperiod during the day by using the same. For example, the monitoring unit 13 may calculate the average temperature during the day by measuring the temperature for each hour and calculating the average of the hourly temperature. In addition, the monitoring unit 13 may detect light having an intensity greater than or equal to a preset threshold (for example, the intensity of sunlight), and calculate a photoperiod during the day by measuring a time for which the light is maintained.

The calculation unit 14 calculates the control information according to the flowering date by using the flowering date according to the input shipping date. Here, the control information may include the temperature and photoperiod according to the flowering date. For example, the calculation unit 14 may calculate the flowering period according to the received shipping date by applying the period ratio of each growth stage according to the growth schedule information of the plant stored in the storage unit 11. Alternatively, the calculation unit 14 may calculate the flowering period using the germination day, the eruption date, and the flowering date received through the input unit 12. In addition, the calculator 14 may calculate the temperature and photoperiod according to the flowering period by using the regression analysis equation (1) described above.

The calculator 14 calculates the growth prediction value by applying the cultivation schedule information and the monitored environment to the growth prediction model.

That is, the calculation unit 14 calculates the monitoring value from the monitoring start date to the present day using the average temperature and photoperiod during the day calculated by the monitoring unit 13. For example, the calculator 14 may substitute the average temperature and photoperiod during the day calculated by the monitoring unit 13 into Equation 1 to calculate a monitoring value corresponding to the inverse value of the flowering period from the differentiation day. .

In addition, the calculation unit 14 calculates a prediction value for the inverse of the flowering period from the current day to the flowering day, and calculates the growth prediction value that is the sum of the monitoring value and the prediction value. For example, the predicted value may be an inverse value of the flowering period according to the received flowering date.

For example, assume that the flowering period is 10 days and the current day is the third day. Monitoring value is calculated using average temperature and photoperiod calculated by daily measurement from 1 to 3 days. And, from 4 days to 10 days 1/10 of the inverse of the flowering period can be applied every day. That is, the calculation unit 14 calculates the monitoring value by substituting the average temperature and the photoperiod calculated through the measurement from 1 day to 3 days into Equation 1, and the monitoring value from 1 day to 3 days and 4 to 10 days. Add up the 1/10 of the forecast to day. The growth prediction value calculated as described above may be expressed by Equation 5 below.

[Equation 5]

In addition, the calculation unit 14 recalculates the control information when the sum of the monitoring value and the predicted value during the flowering period does not become one. That is, the calculator 14 may calculate the temperature and photoperiod at which the sum of the monitoring value and the predicted value becomes 1 using Equation 1.

For example, the calculator 14 may calculate the temperature and the photoperiod corresponding to the sum of the monitoring value and the predicted value and the difference value of 1. That is, assuming that the difference value is +0.9, T values and P values satisfying a + bT + cP = 1 / f + 0.9 are calculated, so that control information can be recalculated.

The output unit 15 is to generate an output related to visual or audio, and may include a display module, a sound output module, and the like. For example, the output unit 15 may output a screen for receiving cultivation information from the grower, and when the temperature and photoperiod in the urban farm are required to be controlled under the control of the controller 16, the sound output module Alarm signal can be generated by using.

The control unit 16 is a component of the plant growth control device 10 (for example, the storage unit 11, the input unit 12, the monitoring unit 13, the calculating unit 14, the output unit 15) To control.

For example, the controller 16 may control the output unit 15 to output a screen for receiving cultivation information. In addition, the controller 16 may control the calculator 14 to calculate the control information and the output unit 15 to output the calculated control information to the screen. In this case, the controller 16 may directly control the temperature controller 20 and the lighting device 30 according to the control information. In addition, the controller 16 may control the monitoring unit 13 to monitor the environment in the urban farm, and control the calculator 14 to calculate the sum of the monitoring value and the predicted value. At this time, the controller 16 determines whether the sum of the monitoring value and the predicted value is 1, and if it is not 1, the calculation unit 14 recalculates the control information, and the output unit 15 generates an alarm signal. Can be controlled.

Although so far described the control of the flowering period, the control method of the flowering period can be applied to each stage of plant growth (for example, from germination to differentiation, from flowering to completion of growth).

2 is a flowchart illustrating a control method of an urban farm.

In step S210, the plant growth control device 10 receives the planting schedule information including the plant name of the plant to be grown and the shipping date desired by the grower. Here, the cultivation schedule information may include germination days, eruption days and flowering days according to the shipment date.

In step S220, the plant growth control apparatus 10 calculates the flowering period according to the shipping date. For example, the plant growth control apparatus 10 may calculate the flowering period according to the received shipping date by applying the ratio of the period of each growth stage according to the growth schedule information of the plant stored in the storage unit 11. If, in step S210, germination, eruption day and flowering date is input, the plant growth control device 10 may calculate the flowering period using this.

In step S230, the plant growth control device 10 calculates and outputs control information according to the flowering period. Here, the control information may include the temperature and photoperiod according to the flowering date. For example, the plant growth control apparatus 10 may calculate the temperature and photoperiod according to the flowering period by using the regression analysis equation (1). In this case, the plant growth control apparatus 10 may output the calculated control information, and the grower may adjust the environment in the urban farm using the output control information. Alternatively, the plant growth control device 10 may directly control the temperature control device 20 and the lighting device 30 according to the control information.

In step S240, the plant growth control device 10 monitors the environment in the urban farm and calculates the monitoring value.

3 is a detailed flowchart of step S240.

In step S241, the plant growth control apparatus 10 calculates the temperature and photoperiod in the urban farm on a daily basis. For example, the plant growth control apparatus 10 may calculate the average temperature for each day by measuring the temperature for each hour and calculating the average of the hourly temperature. In addition, the plant growth control apparatus 10 may detect light having an intensity greater than or equal to a preset threshold (eg, the intensity of sunlight), and calculate a photoperiod during the day by measuring a time for which the light is maintained.

In step S242, the plant growth control device 10 determines whether or not the control cycle. For example, the control period may be preset in units of one day or two days. That is, the plant growth control apparatus 10 may check the monitoring value in the urban farm at the set control cycle and inform the grower of the necessity of environmental control.

In step S243, the plant growth control device 10 calculates a monitoring value for each day. For example, the plant growth control apparatus 10 may calculate the monitoring value corresponding to the inverse of the flowering period every day from the differentiation date by substituting the average temperature and photoperiod during the day into Equation 1.

In step S244, the plant growth control apparatus 10 calculates the sum of the monitoring value and the predicted value. Here, the monitoring value may be calculated for each day from the eruption date to the current day, and the predicted value may be a reciprocal value of the blooming period for each day from the current day to the flowering day. Here, the flowering period may be a value calculated according to the shipment date input by the grower.

Referring back to FIG. 2, in step S250, the plant growth control apparatus 10 determines whether the sum of the monitoring value and the predicted value is one.

In operation S260, the plant growth control apparatus 10 recalculates the control information when the sum of the monitoring value and the predicted value does not become 1. That is, the plant growth control apparatus 10 may calculate the temperature and photoperiod at which the sum of the monitoring value and the predicted value becomes 1 using Equation 1. For example, the plant growth control apparatus 10 may calculate the temperature and photoperiod corresponding to the sum of the monitoring value and the predicted value and the difference value of 1. That is, assuming that the difference value is +0.9, T values and P values satisfying a + bT + cP = 1 / f + 0.9 are calculated, so that control information can be recalculated.

In step S270, environmental control in the urban farm is performed according to the recalculated control information. For example, the plant growth control device 10 may output the recalculated control information and generate an alarm signal. Accordingly, the grower may adjust the environment in the urban farm using the recalculated control information. Alternatively, the plant growth control device 10 may directly control the temperature control device 20 and the lighting device 30 according to the control information.

In step S280, the plant growth control device 10 determines whether the current day is a flowering date. If the current day is the flowering date, the procedure is terminated, and if the current date is not the flowering date, step S240 is entered.

On the other hand, the urban farm control method according to an embodiment of the present invention can be implemented in the form of program instructions that can be executed through various electronic means for processing information can be recorded in the storage medium. The storage medium may include program instructions, data files, data structures, etc. alone or in combination.

Program instructions to be recorded on the storage medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of software. Examples of storage media include magnetic media such as hard disks, floppy disks and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic-optical media such as floppy disks. hardware devices specifically configured to store and execute program instructions such as magneto-optical media and ROM, RAM, flash memory, and the like. In addition, the above-described medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as devices for processing information electronically using an interpreter or the like, for example, a high-level language code that can be executed by a computer.

The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

10: urban farm control device
20: thermostat
30: lighting device

Claims (13)

In the plant growth control device in the urban farm control system,
A storage unit that stores growth schedule information for each plant, including a growth prediction model indicating a correlation between environmental conditions and a plant growth schedule;
An input unit for receiving grower schedule information desired by the grower;
A monitoring unit for monitoring an environment in an urban farm;
A calculator configured to apply the cultivation schedule information and the monitored environment to the growth prediction model to calculate a growth prediction value; And
And a controller configured to control an environment in the urban farm according to a difference between the growth prediction value and the reference value when the growth prediction value does not match a preset reference value.
The method of claim 1,
The environmental conditions include temperature and photoperiod, and the control unit controls the temperature and photoperiod in the urban farm by controlling the temperature control device and the lighting device.
The method of claim 2,
The cultivation schedule information includes a shipment date desired by the grower of the urban farm, an eruption date and a flowering date according to the shipment date,
And the calculating unit calculates a flowering period that is a period from the flowering date to the flowering date by using the flowering date and the flowering date.
The method of claim 3,
The growth prediction model is a plant growth control device, characterized in that represented by the following equation through the regression analysis.

Where f is the flowering period from the eruption date to the flowering date, T is the average temperature during the day, P is the photoperiod during the day, and a. b and c are constants derived from regression analysis through experiments.
The method of claim 4, wherein
The monitoring unit monitors the temperature and light in the urban farm to calculate the temperature and photoperiod on a daily basis,
The calculating unit substitutes the temperature and photoperiod calculated by the day into the growth prediction model, calculates monitoring values from the differentiation date to the present day, and applies the inverse of the flowering period as the predicted value from the current day to the flowering date, respectively. To calculate a growth prediction value that is the sum of the monitoring value and the prediction value.
The method of claim 5,
When the growth prediction value does not match a preset reference value, the calculator calculates a temperature and photoperiod corresponding to the difference between the growth prediction value and the reference value using the growth prediction model,
The control unit controls the plant growth, characterized in that for controlling the temperature and photoperiod in the urban farm according to the temperature and photoperiod corresponding to the difference value.
In the plant growth control device in the urban farm control system to control the plant growth,
Receiving grower schedule information desired by the grower;
Monitoring the environment within the urban farm;
Calculating a growth prediction value by applying the cultivation schedule information and the monitored environment to a growth prediction model, wherein the growth prediction model indicates a correlation between an environmental condition and a growth schedule of a plant; And
And controlling the environment in the urban farm according to the difference between the growth prediction value and the reference value when the growth prediction value does not match a preset reference value.
The method of claim 7, wherein
The environmental conditions include temperature and photoperiod,
Controlling the environment in the urban farm
Plant growth control method characterized in that to control the temperature control device and the lighting device to control the temperature and photoperiod in the urban farm.
9. The method of claim 8,
The cultivation schedule information includes a shipment date desired by the grower of the urban farm, an eruption date and a flowering date according to the shipment date,
After receiving the cultivation schedule information,
Comprising a step of calculating the flowering period which is a period from the flowering date to the flowering date using the flowering date and the flowering date.
10. The method of claim 9,
The growth prediction model is a plant growth control device, characterized in that represented by the following equation through the regression analysis.

Where f is the flowering period from the eruption day to the flowering day, T is the average temperature during the day, P is the photoperiod during the day, a, b and c are constants, and a regression analysis is performed through the experiment. Derived.
The method of claim 10,
Monitoring the environment in the urban farm
Calculating the temperature and photoperiod on a daily basis by monitoring the temperature and light in the urban farm;
Computing the growth prediction value
Calculating monitoring values from the differentiation date to the present day by substituting the temperature and photoperiod calculated for each day into the growth prediction model; And
And applying a reciprocal of the flowering period as a predicted value from the current day to the flowering date to calculate a growth prediction value that is a sum of the monitoring value and the predicted value.
The method of claim 11,
Controlling the environment in the urban farm
Calculating a temperature and a photoperiod corresponding to the difference between the growth prediction value and the reference value using the growth prediction model; And
And controlling the temperature and photoperiod in the urban farm according to the temperature and photoperiod corresponding to the difference value.
A computer-readable recording medium for recording a program for executing the method of any one of claims 7 to 12 on a computer.

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