WO2018021142A1 - Carbon dioxide supply assistance device and carbon dioxide supply assistance program - Google Patents

Abstract

Provided is a carbon dioxide supply assistance device that: measures the environment inside and outside a greenhouse in which plants are raised; obtains environmental conditions; calculates the rate of exchange of carbon dioxide by the plants in the greenhouse on the basis of, from among the environmental conditions, carbon dioxide concentrations inside and outside the greenhouse, the greenhouse ventilation frequency, and the light intensity in the greenhouse; generates environmental data in which the environmental conditions and the rate of exchange of carbon dioxide are associated with each other; obtains, from among the environmental data that an environmental data generating unit previously generated, similar environmental data which are similar to the environmental conditions; calculates the rate at which the plants in the greenhouse consume the carbon dioxide in the greenhouse on the basis of the similar environmental data and the rate of exchange of carbon dioxide; and estimates the relationship between the rate at which the carbon dioxide is supplied into the greenhouse and the rate at which carbon dioxide is consumed, on the basis of the inner volume of the greenhouse, the consumption rate, and, from among the environmental conditions, the greenhouse ventilation frequency.

Description

Carbon dioxide application support device and carbon dioxide application support program

The present invention relates to a carbon dioxide application support apparatus and a carbon dioxide application support program.
This application claims priority based on Japanese Patent Application No. 2016-148443 filed in Japan on July 28, 2016, the contents of which are incorporated herein by reference.

Conventionally, a technique for applying carbon dioxide to a greenhouse for growing plants to promote plant growth is known (for example, Patent Document 1).

JP 2014-128263 A

In the time zone of light intensity in which plants actively carry out photosynthesis, the temperature in the greenhouse rises too much, so the windows of the greenhouse may be opened. When the greenhouse window is opened, even if carbon dioxide is applied to the greenhouse, much of the carbon dioxide applied to the greenhouse leaks out of the greenhouse through the window. The manager who manages the greenhouse should increase or decrease the flow rate of carbon dioxide applied to the greenhouse in accordance with changes in the growth environment of the plant, but there is a problem that there is no rational method for determining the flow rate.
The subject of this invention is providing the carbon dioxide application assistance apparatus and carbon dioxide application assistance program which can notify a management of the flow volume of the carbon dioxide applied in a greenhouse.

One aspect of the present invention is an environmental condition acquisition unit that acquires an environmental condition in which a plant is grown from a measurement unit that measures the environment inside and outside the greenhouse that grows the plant, and the environmental condition that the environmental condition acquisition unit acquires. Of the carbon dioxide concentration in the greenhouse, the carbon dioxide concentration outside the greenhouse, the ventilation frequency of the greenhouse, and the light intensity in the greenhouse, exchange of carbon dioxide performed by plants in the greenhouse An environment for generating environmental data in which an exchange rate calculation unit for calculating a rate, the environmental condition acquired by the environmental condition acquisition unit, and the carbon dioxide exchange rate calculated by the exchange rate calculation unit are associated with each other From among the environmental data generated in the past by the data generation unit and the environmental data generation unit, environmental data similar to the environmental condition acquired by the environmental condition acquisition unit is acquired as similar environmental data Based on the environmental data acquisition unit, the similar environmental data acquired by the environmental data acquisition unit, and the carbon dioxide exchange rate calculated by the exchange rate calculation unit, plants in the greenhouse are converted to carbon dioxide in the greenhouse. Among the environmental conditions acquired by the environmental condition acquisition unit, the greenhouse in the consumption rate calculation unit that calculates the rate of consuming carbon, the volume in the greenhouse, the consumption rate calculated by the absorption rate calculation unit, It is a carbon dioxide application assistance apparatus provided with the application speed estimation part which estimates the relationship between the application speed of the carbon dioxide applied in the said greenhouse, and the said consumed speed based on the ventilation frequency of this.

In another aspect of the present invention, the consumption rate calculation unit is a relative value between the exchange rate of the carbon dioxide calculated by the exchange rate calculation unit and the exchange rate of the carbon dioxide included in the similar environment data. The carbon dioxide application support apparatus calculates the consumed speed based on the above.

In another aspect of the present invention, the application rate estimation unit further calculates a value related to the state of the plant based on the consumption rate calculated by the consumption rate calculation unit. It is.

In another aspect of the present invention, the value related to the state of the plant includes a growth rate of the foliage part indicating the speed of elongation of the foliage part including the growth point of the plant, and the moisture transpiration from the plant. This is a carbon dioxide application support device including at least one of the transpiration rates indicating the amount per unit time.

In another aspect of the present invention, the environmental conditions include a condition of saturation in the greenhouse, a condition of air temperature in the greenhouse, and a condition of a feed rate supplied to the plant. The speed estimation unit is a carbon dioxide application support apparatus that estimates a relationship between at least one of the environmental conditions and the consumed speed.

One aspect of the present invention is acquired in an environmental condition acquisition step of acquiring an environmental condition in which a plant is grown from a measurement unit that measures the environment inside and outside the greenhouse in which the plant is grown. Among the environmental conditions, the plants in the greenhouse perform based on the carbon dioxide concentration in the greenhouse, the carbon dioxide concentration outside the greenhouse, the ventilation frequency of the greenhouse, and the light intensity in the greenhouse. The respiration rate calculation step for calculating the carbon dioxide exchange rate, the environmental condition acquired in the environmental condition acquisition step, and the carbon dioxide exchange rate calculated in the respiration rate calculation step are associated with each other. An environmental data generating step for generating environmental data, and the environmental data generated in the past in the environmental data generating step. Environmental data acquisition step for acquiring environmental data similar to the environmental condition acquired in the environmental condition acquisition step as similar environmental data, the similar environmental data acquired in the environmental data acquisition step, and the respiration rate calculation step A consumption rate calculating step of calculating a rate at which plants in the greenhouse consume carbon dioxide in the greenhouse based on the exchange rate of carbon dioxide calculated in step 3, a volume in the greenhouse, and the consumption rate Based on the consumption rate calculated in the calculation step and the ventilation frequency of the greenhouse among the environmental conditions acquired in the environmental condition acquisition step, the application rate of carbon dioxide applied in the greenhouse and the Coal dioxide for performing an application rate estimation step for estimating a relationship with consumption rate Is an application support program.

According to the present invention, it is possible to provide a carbon dioxide application support apparatus and a carbon dioxide application support program capable of notifying an administrator of the flow rate of carbon dioxide applied in a greenhouse.

It is a figure which shows an example of the external appearance structure of a greenhouse. It is a figure which shows an example of a structure of a carbon dioxide application assistance apparatus. It is a flowchart which shows an example of operation | movement of a carbon dioxide application assistance apparatus. It is a flowchart which shows an example of operation | movement of a carbon dioxide application assistance apparatus. It is a figure which shows an example of the environmental data memorize | stored in a memory | storage part. It is a figure which shows an example of the relationship between the carbon dioxide density | concentration in a greenhouse, and a pure photosynthesis rate. It is a figure which shows an example with the case where it corrects to the pure light composition speed | rate of similar environment data, and the case where it does not perform. It is a figure which shows an example of the application rate of the carbon dioxide which the application rate estimation part estimated. It is a figure which shows an example of the application rate of the carbon dioxide which the application rate estimation part estimated. It is a figure which shows an example of the relationship between the quantity of the environmental data memorize | stored in the memory | storage part, and the pure light composition speed | rate which a consumption speed calculation part calculates. It is a figure which shows an example of the relationship between the tolerance | permissible_range of the similar environmental data which an environmental data acquisition part acquires from a memory | storage part, and the pure light composition speed | rate which a consumption speed calculation part calculates.

[Embodiment]
[Appearance structure of greenhouse 1]
Hereinafter, an embodiment of a carbon dioxide application support device according to the present invention will be described with reference to the drawings. It should be noted that the number of components described in this embodiment is not intended to limit the scope of the present invention unless otherwise specified, and is merely an illustrative example.
FIG. 1 is a diagram illustrating an example of an external configuration of a greenhouse 1.

In the greenhouse 1, plant NP is vegetated. The greenhouse 1 is a building in which the plant NP is grown. The greenhouse 1 may receive sunlight and grow the internal plant NP, or may grow the internal plant NP by artificial light. The plant NP grows according to the environmental conditions of the greenhouse 1. Specifically, the plant NP receives light in the greenhouse 1, absorbs carbon dioxide in the greenhouse 1, and performs photosynthesis. In this example, the plant NP is vegetated in the greenhouse 1 in a seedling state. The plant NP may be vegetated in the greenhouse 1 in a state other than the seedling.

The greenhouse 1 includes a measurement unit 10, a window 20, a saturation calculation device 15, a ventilation frequency calculation unit 16, a carbon dioxide application control device 17, a greenhouse information device 18, and a carbon dioxide application support device 100. .

The measuring unit 10 measures the environmental conditions of the greenhouse 1. The environmental conditions of the greenhouse 1 include the temperature in the greenhouse 1, the light intensity indicating the intensity of light in the greenhouse 1, the saturation in the greenhouse 1, the carbon dioxide concentration inside and outside the greenhouse 1, and the ventilation frequency of the greenhouse 1. . Here, the saturation is a difference between the total amount of water vapor in the air at a certain temperature and the amount of water vapor already contained in the air. The number of ventilations is the amount of air flowing into the structure per hour divided by the air volume in the structure. In this example, the ventilation rate is obtained by dividing the amount of air flowing into the greenhouse 1 per hour by the air volume in the greenhouse 1. Specifically, the number of ventilations refers to the number of ventilations when “500” (m ³ ) of air flows into the greenhouse 1 having an air volume of “500” (m ³ ) per hour. 1 ″ (h ⁻¹ ).

The measurement unit 10 includes a temperature sensor 11, a light intensity sensor 12, an indoor carbon dioxide concentration measurement sensor 13, an outdoor carbon dioxide concentration measurement sensor 14, a saturation calculation device 15, and a ventilation frequency calculation unit 16.
The temperature sensor 11 measures the temperature in the greenhouse 1. The temperature sensor 11 outputs the measured temperature in the greenhouse 1 to the carbon dioxide application support apparatus 100. Specifically, the temperature sensor 11 measures the temperature in the greenhouse 1.
The light intensity sensor 12 measures the intensity of light in the greenhouse 1. The light intensity sensor 12 outputs the measured light intensity in the greenhouse 1 to the carbon dioxide application support apparatus 100. In this example, the light intensity sensor 12 measures the amount of solar radiation in the greenhouse 1. In the case of a greenhouse where plants are grown by artificial light, the light intensity sensor 12 may measure the intensity of artificial light.

The indoor carbon dioxide concentration measuring sensor 13 measures the carbon dioxide concentration in the greenhouse 1. The indoor carbon dioxide concentration measurement sensor 13 outputs the measured carbon dioxide concentration in the greenhouse 1 to the carbon dioxide application support apparatus 100.
The outdoor carbon dioxide concentration measurement sensor 14 measures the carbon dioxide concentration outside the greenhouse 1. The outdoor carbon dioxide concentration measurement sensor 14 outputs the measured carbon dioxide concentration outside the greenhouse 1 to the carbon dioxide application support apparatus 100.

The saturation calculation device 15 calculates the saturation in the greenhouse 1. The saturation calculation device 15 calculates the saturation based on the temperature in the greenhouse 1 and the relative humidity in the greenhouse 1. The saturation calculation device 15 outputs the calculated saturation to the carbon dioxide application support device 100.

The ventilation frequency calculation unit 16 calculates the ventilation frequency of the greenhouse 1. The ventilation frequency measurement unit 16 calculates the ventilation frequency based on the water balance method or the like. Here, the water balance method is a method of calculating the number of ventilations of the greenhouse 1 based on the moisture input to the greenhouse 1 and the moisture discharged from the greenhouse 1. The ventilation frequency calculation unit 16 outputs the measured ventilation frequency to the carbon dioxide application support apparatus 100. Note that the ventilation frequency of the greenhouse 1 may be controlled by a fan (not shown) or the like. In this example, a case where the ventilation frequency is 1 will be described.

The window 20 opens and closes. When the window 20 opens and closes, the environmental conditions in the greenhouse 1 change.
Specifically, when the window 20 is opened, the degree to which the air in the greenhouse 1 is replaced increases. When the window 20 is opened, if the temperature in the greenhouse 1 is higher than the temperature outside the greenhouse 1, the temperature in the greenhouse 1 is lowered. When the window 20 is closed, the air in the greenhouse 1 is hardly changed. When the window 20 is closed, the temperature in the greenhouse 1 generally rises if the greenhouse 1 is exposed to sunlight.

The carbon dioxide application control device 17 controls the application rate of carbon dioxide supplied into the greenhouse 1 based on the application rate of carbon dioxide calculated by the carbon dioxide application support device 100. In other words, the carbon dioxide application control device 17 controls the amount of carbon dioxide supplied into the greenhouse 1 based on the carbon dioxide application speed calculated by the carbon dioxide application support device 100.
The carbon dioxide application control device 17 outputs a carbon dioxide application rate CS indicating the application rate of carbon dioxide supplied from the carbon dioxide application control device 17 into the greenhouse 1 to the environmental data generation unit 109.

The greenhouse information device 18 is a device in which information related to the greenhouse 1 is stored. In this example, the greenhouse information device 18 stores information on the air volume in the greenhouse 1. The air volume in the greenhouse 1 is the volume of air in the greenhouse 1. Note that the air volume information in the greenhouse 1 stored in the greenhouse information device 18 may be handled as a substantially fixed value for each greenhouse 1. Information on the air volume in the greenhouse 1 may be stored anywhere.

The carbon dioxide application support apparatus 100 acquires environmental conditions inside and outside the greenhouse 1 that change according to the season, weather, time, and the like. The carbon dioxide application support apparatus 100 estimates the application rate of carbon dioxide suitable for the plant NP in the greenhouse 1 based on the acquired environmental conditions. In this example, the carbon dioxide application speed estimated by the carbon dioxide application support apparatus 100 is the carbon dioxide application speed applied to the plant NP in the greenhouse 1 and the plant NP in the greenhouse 1 according to the environmental conditions inside and outside the greenhouse 1. It is a curve which shows the relationship with the pure photosynthesis speed | rate. In the following description, a curve indicating the relationship between the carbon dioxide application rate applied to the plant NP in the greenhouse 1 and the net photosynthetic rate of the plant NP in the greenhouse 1 according to the environmental conditions inside and outside the greenhouse 1 is simply a CP curve. It may be described.
Details of the carbon dioxide application support apparatus 100 will be described later.

Next, the functional configuration of the carbon dioxide application support apparatus 100 will be described with reference to FIG.
FIG. 2 is a diagram illustrating an example of the configuration of the carbon dioxide application support apparatus 100.
The carbon dioxide application support apparatus 100 includes an environmental condition acquisition unit 101, an exchange rate calculation unit 108, an environmental data generation unit 109, a storage unit 110, an environmental data acquisition unit 111, a consumption rate calculation unit 112, and an application rate. An estimation unit 113 and a display unit 114 are provided.

The environmental condition acquisition unit 101 acquires, from the measurement unit 10, environmental conditions under which the plant NP is grown. When the plant NP is planted in the greenhouse 1, the environmental condition acquisition unit 101 acquires the environmental condition from the measurement unit 10 with a time interval.
Specifically, the environmental condition acquisition unit 101 includes a temperature acquisition unit 102, a light intensity acquisition unit 103, a saturation acquisition unit 104, an indoor carbon dioxide concentration acquisition unit 105, and an outdoor carbon dioxide concentration acquisition unit 106. The ventilation frequency acquisition unit 107 is included.

The temperature acquisition unit 102 acquires the temperature TV in the greenhouse 1 from the temperature sensor 11. The temperature acquisition unit 102 outputs the acquired temperature TV in the greenhouse 1 to the exchange rate calculation unit 108 and the environment data generation unit 109.

The light intensity acquisition unit 103 acquires the light intensity LS in the greenhouse 1 from the light intensity sensor 12. The light intensity acquisition unit 103 outputs the acquired light intensity LS in the greenhouse 1 to the exchange rate calculation unit 108 and the environment data generation unit 109.

The saturation acquisition unit 104 acquires the saturation HD in the greenhouse 1 from the saturation calculation device 15. The saturation acquisition unit 104 outputs the acquired saturation HD in the greenhouse 1 to the environment data generation unit 109.

The indoor carbon dioxide concentration acquisition unit 105 acquires the carbon dioxide concentration ICD in the greenhouse 1 from the indoor carbon dioxide concentration measurement sensor 13. The indoor carbon dioxide concentration acquisition unit 105 outputs the acquired carbon dioxide concentration ICD in the greenhouse 1 to the exchange rate calculation unit 108 and the environment data generation unit 109.

The outdoor carbon dioxide concentration acquisition unit 106 acquires the carbon dioxide concentration OCD outside the greenhouse 1 from the outdoor carbon dioxide concentration measurement sensor 14. The outdoor carbon dioxide concentration acquisition unit 106 outputs the acquired carbon dioxide concentration OCD outside the greenhouse 1 to the exchange rate calculation unit 108 and the environment data generation unit 109.

The ventilation frequency acquisition unit 107 acquires the ventilation frequency VC from the ventilation frequency calculation unit 16. The ventilation frequency acquisition unit 107 outputs the acquired ventilation frequency VC to the replacement speed calculation unit 108, the environment data generation unit 109, and the application speed estimation unit 113.

The exchange rate calculation unit 108 calculates the carbon dioxide exchange rate PS of the plant NP in the greenhouse 1. The carbon dioxide exchange rate PS is the rate of carbon dioxide that is consumed or released by the plant NP in the greenhouse 1. Specifically, the exchange rate calculation unit 108 acquires the light intensity LS in the greenhouse 1 from the light intensity acquisition unit 103. The exchange rate calculation unit 108 acquires the carbon dioxide concentration ICD in the greenhouse 1 from the indoor carbon dioxide concentration acquisition unit 105. The exchange rate calculation unit 108 acquires the carbon dioxide concentration OCD outside the greenhouse 1 from the outdoor carbon dioxide concentration acquisition unit 106. The replacement speed calculation unit 108 acquires the ventilation frequency VC from the ventilation frequency acquisition unit 107. The exchange speed calculation unit 108 acquires the air volume AC from the greenhouse information device 18.

Among the environmental conditions acquired by the environmental condition acquisition unit 101, the exchange rate calculation unit 108 is the carbon dioxide concentration ICD inside the greenhouse 1, the carbon dioxide concentration OCD outside the greenhouse 1, the ventilation frequency VC of the greenhouse 1, the greenhouse 1 Based on the light intensity LS, the carbon dioxide exchange rate PS performed by the plant NP in the greenhouse 1 is calculated. Specifically, the exchange rate calculation unit 108 calculates the carbon dioxide exchange rate PS using an equation in a steady state derived from the Seidel equation shown in Equation (1).

Here, M in the formula (1) is the carbon dioxide exchange rate PS of the plant NP in the greenhouse 1. N in Formula (1) is the ventilation frequency VC. V in Formula (1) is the air volume AC in the greenhouse 1. ΔC in the equation (1) is a difference between the carbon dioxide concentration ICD in the greenhouse 1 and the carbon dioxide concentration OCD outside the greenhouse 1.
The carbon dioxide exchange rate PS calculated by the exchange rate calculation unit 108 is the light intensity LS in the greenhouse 1 when the light intensity suitable for the photosynthesis of the plant NP is not shown (for example, at night). Indicates the dark breathing rate. Here, dark respiration is respiration in which the plant NP emits carbon dioxide.
The exchange rate PS of carbon dioxide calculated by the exchange rate calculation unit 108 is that the light intensity LS in the greenhouse 1 indicates the intensity of light suitable for the photosynthesis of the plant NP (for example, daytime). Pure photosynthesis rate. The net photosynthetic rate is the rate of carbon dioxide absorbed by the plant NP in the greenhouse 1 according to the carbon dioxide concentration ICD in the greenhouse 1. In the following description, the pure photosynthetic rate may be described as a consumed rate UD.
That is, the exchange rate calculation unit 108 calculates the carbon dioxide exchange rate PS as the dark respiration rate when the light intensity indicated by the light intensity LS in the greenhouse 1 does not reach the intensity at which the plant NP can be photosynthesized. To do. When the light intensity indicated by the light intensity LS in the greenhouse 1 has reached the intensity at which the plant NP can be photosynthesized, the exchange rate calculation unit 108 calculates the carbon dioxide exchange rate PS as the pure photosynthesis rate. .

The carbon dioxide exchange rate PS calculated by the exchange rate calculating unit 108 may distinguish between the dark breathing rate and the pure photosynthetic rate based on time information. Specifically, the carbon dioxide exchange rate PS calculated by the exchange rate calculation unit 108 may be the time during which the sun is out as the pure photosynthetic rate. Further, the carbon dioxide exchange rate PS calculated by the exchange rate calculation unit 108 may be the time during which the sun is setting as the dark breathing rate.

The environmental data generation unit 109 generates environmental data ED in which the environmental conditions acquired by the environmental condition acquisition unit 101 and the carbon dioxide exchange rate PS calculated by the exchange rate calculation unit 108 are associated with each other. Specifically, the environment data generation unit 109 acquires the temperature TV in the greenhouse 1 from the temperature acquisition unit 102. The environment data generation unit 109 acquires the light intensity LS in the greenhouse 1 from the light intensity acquisition unit 103. The environmental data generation unit 109 acquires the saturation HD in the greenhouse 1 from the saturation acquisition unit 104. The environmental data generation unit 109 acquires the carbon dioxide concentration ICD in the greenhouse 1 from the indoor carbon dioxide concentration acquisition unit 105. The environmental data generation unit 109 acquires the carbon dioxide concentration OCD outside the greenhouse 1 from the outdoor carbon dioxide concentration acquisition unit 106. The environmental data generation unit 109 acquires the ventilation frequency VC from the ventilation frequency acquisition unit 107. The environmental data generation unit 109 acquires the carbon dioxide application speed CS from the carbon dioxide application control device 17.

The environmental data generation unit 109 includes a temperature TV in the greenhouse 1, a light intensity LS in the greenhouse 1, a saturation HD in the greenhouse 1, a carbon dioxide concentration ICD in the greenhouse 1, and a carbon dioxide concentration outside the greenhouse 1. The environmental data ED is generated by associating the OCD, the ventilation frequency VC, the carbon dioxide application rate CS, the date and time when the environmental conditions are acquired, and the carbon dioxide exchange rate PS with each other.
The environment data generation unit 109 causes the storage unit 110 to store the generated environment data ED. The environment data generation unit 109 outputs the generated environment data ED to the environment data acquisition unit 111.
The storage unit 110 stores the environment data ED generated by the environment data generation unit 109.

The environmental data acquisition unit 111 acquires environmental data similar to the environmental condition ED acquired by the environmental condition acquisition unit 101 as the similar environmental data SED from the environmental data ED generated by the environmental data generation unit 109 in the past. The similar environmental data SED is environmental data ED whose value is close to the environmental data ED used by the application rate estimation unit 113 for estimating the application rate AS of carbon dioxide among the environmental data generated in the past. Specifically, the environmental data ED used by the environmental data acquisition unit 111 for selecting the similar environmental data SED is that the current environmental conditions in the greenhouse 1 are those in the greenhouse 1 due to sunset, large temperature changes, cloudy weather, and rain. It may be environmental data ED before environmental conditions such as a change in light intensity LS change greatly. More specifically, for example, the environment data acquisition unit 111 may acquire environment data similar to the environment data ED generated before the most recently generated environment data ED as the similar environment data SED. . When the environment data acquisition unit 111 acquires, as similar environment data SED, data similar to the environment data ED generated before the most recently generated environment data ED, the environment data acquired from the environment data generation unit 109 Data ED may be accumulated, and similar environment data SED may be acquired from storage unit 110 based on accumulated environment data ED.

The environmental data acquisition unit 111 acquires environmental data ED from the environmental data generation unit 109.
The environmental data acquisition unit 111 is similar in the light intensity LS in the greenhouse 1, the temperature TV in the greenhouse 1, and the saturation HD in the greenhouse 1 among the environmental data ED acquired from the environmental data generation unit 109. Environment data to be acquired is acquired from the storage unit 110 as similar environment data SED.
Specifically, the environmental data acquisition unit 111 includes, among the environmental data ED acquired from the environmental data generation unit 109, the light intensity LS in the greenhouse 1, the temperature TV in the greenhouse 1, and the saturation HD in the greenhouse 1. Are obtained as the similar environment data SED, within the range of about ± 25%. As an example, in the environmental data ED, the environmental data acquisition unit 111 has a light intensity LS in the greenhouse 1 of “100”, a temperature TV in the greenhouse 1 of “20”, and a saturation HD in the greenhouse 1 of “30”. In the case of the environmental data ED generated in the past stored in the storage unit 110, the light intensity LS in the greenhouse 1 is “75” to “125”, and the temperature TV in the greenhouse 1 is “15”. To “25”, and environmental data in which the saturation HD in the greenhouse 1 falls within “22.5” to “37.5” is acquired as similar environmental data SED.

The environment data acquisition unit 111 outputs the environment data ED acquired from the environment data generation unit 109 and the similar environment data SED acquired from the storage unit 110 to the consumption speed calculation unit 112.

Based on the similar environment data SED acquired by the environment data acquisition unit 111 and the carbon dioxide exchange rate PS calculated by the exchange rate calculation unit 108, the consumption rate calculation unit 112 converts the plant NP in the greenhouse 1 into the greenhouse 1 The rate UD at which the carbon dioxide is consumed is calculated. The consumption rate calculation unit 112 consumes the carbon dioxide nearest to the date of the environment data ED based on the latest dark breathing rate of the date of the environment data ED and the dark breathing rate of the date of the similar environment data SED. The speed UD is corrected. Specifically, the consumption rate calculation unit 112 determines that the dark breathing rate closest to the date of the environment data ED is “1” and the dark breathing rate closest to the date of the similar environment data SED is “0.5”. The speed UD for consuming carbon dioxide contained in the similar environment data SED is doubled. That is, the consumption rate calculation unit 112 corrects the rate UD that consumes carbon dioxide increased according to the growth of the plant NP in the greenhouse 1 based on the relative value of the dark respiration rate.
The consumption speed calculation unit 112 performs the above-described correction for each carbon dioxide concentration ICD in the greenhouse 1 included in the similar environment data SED. The consumption rate calculation unit 112 calculates the relationship between the carbon dioxide concentration ICD in the greenhouse 1 and the rate UD at which the corrected plant NP in the greenhouse 1 consumes carbon dioxide.
The consumption rate calculation unit 112 outputs the relationship between the calculated carbon dioxide concentration ICD in the greenhouse 1 and the rate UD at which carbon dioxide is consumed to the application rate estimation unit 113.

The application rate estimation unit 113 calculates the application rate of carbon dioxide applied in the greenhouse 1 based on the air volume AC in the greenhouse 1, the consumption rate UD, and the ventilation frequency VC of the greenhouse 1 among the environmental conditions. The relationship with the speed UD consumed by the plant NP in the greenhouse 1 is estimated.
The application speed estimation unit 113 acquires the speed UD at which carbon dioxide is consumed from the consumption speed calculation unit 112. The application speed estimation unit 113 acquires the air volume AC from the greenhouse information device 18. The application speed estimation unit 113 acquires the ventilation frequency VC from the ventilation frequency acquisition unit 107. The application speed estimation unit 113 is based on the speed UD that consumes carbon dioxide acquired from the consumption speed calculation unit 112, the air volume AC acquired from the greenhouse information device 18, and the ventilation frequency VC acquired by the ventilation frequency acquisition unit 107. The CP curve is estimated. Specifically, the application speed estimation unit 113 estimates a CP curve from the above-described equation (1).
Note that the application rate estimation unit 113 uses the equation in the steady state derived from the Seidel equation shown in the equation (2) for the similar environment data SED when carbon dioxide is applied in the greenhouse 1, and CP Estimate the curve.

Here, M in the formula (2) is the carbon dioxide exchange rate PS of the plant NP in the greenhouse 1. N in Formula (2) is the ventilation frequency VC. V in Formula (2) is the air volume AC in the greenhouse 1. ΔC in equation (2) is the difference between the carbon dioxide concentration ICD in the greenhouse 1 and the carbon dioxide concentration OCD outside the greenhouse 1. S in Formula (2) is the application rate of the carbon dioxide which the carbon dioxide application control apparatus 17 applies.
The application speed estimation unit 113 causes the display unit 114 to display the estimated CP curve.

The display unit 114 displays a CP curve.
The manager of the greenhouse 1 confirms the CP curve displayed on the display unit 114. The administrator inputs in advance a condition for determining that an effect of applying carbon dioxide can be expected by operating an operation unit (not shown) included in the carbon dioxide application support apparatus 100, thereby providing the carbon dioxide application control device 17. The application rate of carbon dioxide in the amount calculated by the carbon dioxide application support apparatus 100 can be controlled. Note that the carbon dioxide application support apparatus 100 may have a predetermined threshold value for applying carbon dioxide to the greenhouse 1 in advance. When a threshold value is set in advance, the carbon dioxide application assisting apparatus 100 outputs the calculated carbon dioxide application speed to the carbon dioxide application control apparatus 17 according to the threshold value.

[Outline of Environmental Condition Acquisition Operation of Carbon Dioxide Application Support Device 100]
Next, with reference to FIG. 3, the outline | summary of the environmental condition acquisition operation | movement of the carbon dioxide application assistance apparatus 100 is demonstrated.
FIG. 3 is a flowchart S <b> 1 showing an example of the operation of the carbon dioxide application support apparatus 100.

The environmental condition acquisition unit 101 included in the carbon dioxide application support apparatus 100 starts to acquire the environmental conditions in the greenhouse 1 after the plant NP is planted in the greenhouse 1. The light intensity acquisition unit 103 acquires the light intensity LS in the greenhouse 1 from the light intensity sensor 12. The light intensity acquisition unit 103 outputs the light intensity LS in the greenhouse 1 acquired from the light intensity sensor 12 to the environment data generation unit 109 and the exchange rate calculation unit 108 (step S110).

The temperature acquisition unit 102 acquires the temperature TV in the greenhouse 1 from the temperature sensor 11. The temperature acquisition unit 102 outputs the temperature TV in the greenhouse 1 acquired from the temperature sensor 11 to the environment data generation unit 109 (step S120).

The saturation acquisition unit 104 acquires the saturation HD in the greenhouse 1 from the saturation calculation device 15. The saturation acquisition unit 104 outputs the saturation HD in the greenhouse 1 acquired from the saturation calculation device 15 to the environmental data generation unit 109 (step S130).

The outdoor carbon dioxide concentration acquisition unit 106 acquires the carbon dioxide concentration OCD outside the greenhouse 1 from the outdoor carbon dioxide concentration measurement sensor 14. The outdoor carbon dioxide concentration acquisition unit 106 outputs the carbon dioxide concentration OCD outside the greenhouse 1 acquired from the outdoor carbon dioxide concentration measurement sensor 14 to the environmental data generation unit 109 and the exchange rate calculation unit 108 (step S140). ).

The indoor carbon dioxide concentration acquisition unit 105 acquires the carbon dioxide concentration ICD in the greenhouse 1 from the indoor carbon dioxide concentration measurement sensor 13. The indoor carbon dioxide concentration acquisition unit 105 outputs the carbon dioxide concentration ICD in the greenhouse 1 acquired from the indoor carbon dioxide concentration measurement sensor 13 to the environmental data generation unit 109 and the exchange rate calculation unit 108 (step S150). ).

The ventilation frequency acquisition unit 107 acquires the ventilation frequency VC from the ventilation frequency calculation unit 16. The ventilation frequency acquisition unit 107 outputs the ventilation frequency VC acquired from the ventilation frequency calculation unit 16 to the environment data generation unit 109, the replacement speed calculation unit 108, and the application speed estimation unit 113 (step S160).

The environmental data generation unit 109 acquires the carbon dioxide application speed CS from the carbon dioxide application control device 17 (step S170).

The exchange speed calculation unit 108 acquires the light intensity LS in the greenhouse 1 from the light intensity acquisition unit 103. The exchange rate calculation unit 108 acquires the carbon dioxide concentration ICD in the greenhouse 1 from the indoor carbon dioxide concentration acquisition unit 105. The exchange rate calculation unit 108 acquires the carbon dioxide concentration OCD outside the greenhouse 1 from the outdoor carbon dioxide concentration acquisition unit 106. The replacement speed calculation unit 108 acquires the ventilation frequency VC from the ventilation frequency acquisition unit 107. The exchange rate calculation unit 108 calculates the carbon dioxide exchange rate PS of the plant NP in the greenhouse 1 based on the above-described equation (1). The exchange rate calculation unit 108 outputs the calculated carbon dioxide exchange rate PS to the environment data generation unit 109 (step S180).

The environment data generation unit 109 acquires the temperature TV in the greenhouse 1 from the temperature acquisition unit 102. The environment data generation unit 109 acquires the light intensity LS in the greenhouse 1 from the light intensity acquisition unit 103. The environmental data generation unit 109 acquires the saturation HD in the greenhouse 1 from the saturation acquisition unit 104. The environmental data generation unit 109 acquires the carbon dioxide concentration ICD in the greenhouse 1 from the indoor carbon dioxide concentration acquisition unit 105. The environmental data generation unit 109 acquires the carbon dioxide concentration OCD outside the greenhouse 1 from the outdoor carbon dioxide concentration acquisition unit 106. The environmental data generation unit 109 acquires the ventilation frequency VC from the ventilation frequency acquisition unit 107. The environmental data generation unit 109 acquires the carbon dioxide exchange rate PS from the exchange rate calculation unit 108. The environmental data generation unit 109 includes the temperature TV in the greenhouse 1 acquired from the temperature acquisition unit 102, the light intensity LS in the greenhouse 1 acquired from the light intensity acquisition unit 103, and the inside of the greenhouse 1 acquired from the saturation acquisition unit 104. , The carbon dioxide concentration ICD in the greenhouse 1 acquired from the indoor carbon dioxide concentration acquisition unit 105, the carbon dioxide concentration OCD outside the greenhouse 1 acquired from the outdoor carbon dioxide concentration acquisition unit 106, and the ventilation frequency acquisition unit Environmental data ED in which the ventilation frequency VC acquired from 107 and the carbon dioxide replacement speed PS acquired from the replacement speed calculation unit 108 are associated with each other is generated. The environment data generation unit 109 stores the generated environment data ED in the storage unit 110 (step S190).

The carbon dioxide application support apparatus 100 repeatedly executes the process of the flowchart S1. The carbon dioxide application support apparatus 100 repeatedly executes the process of the flowchart S1 with a time interval. Here, the time interval for executing the processing of the flowchart S1 is an interval of several tens of seconds to several tens of minutes. More specifically, the carbon dioxide application support apparatus 100 accumulates a lot of environmental data ED used for estimating the CP curve when the process of the flowchart S1 is repeatedly executed at a time interval of 10 minutes or less. be able to. In this case, the carbon dioxide application support apparatus 100 can estimate a more accurate CP curve based on a lot of environmental data ED.
The carbon dioxide application support apparatus 100 continuously performs the process of the flowchart S1 for several days or more, and accumulates the environmental data ED in the storage unit 110.
Note that the processing order from step S110 to step S170 may be switched.

[Outline of carbon dioxide application speed estimation operation of carbon dioxide application support apparatus 100]
Next, with reference to FIG. 4, the outline | summary of the carbon dioxide application speed estimation operation | movement of the carbon dioxide application assistance apparatus 100 is demonstrated.
FIG. 4 is a flowchart S2 illustrating an example of the operation of the carbon dioxide application support apparatus 100.

The environment data generation unit 109 outputs the environment data ED to the environment data acquisition unit 111. The environment data acquisition unit 111 acquires the environment data ED acquired from the environment data generation unit 109 and similar environment data as the similar environment data SED from the storage unit 110 (step S210). The environment data acquisition unit 111 includes the environment data ED acquired from the environment data acquisition unit 111, the similar environment data SED acquired from the storage unit 110, the dark breathing rate closest to the date of the environment data ED, and the similar environment data SED. The dark breathing rate closest to the date is output to the consumption rate calculating unit 112.

The consumption rate calculation unit 112 receives the environment data ED, the similar environment data SED, the dark respiratory rate closest to the date of the environmental data ED, and the dark respiratory rate closest to the date of the similar environment data SED from the environmental data acquisition unit 111 And get. The consumption rate calculation unit 112 corrects the pure photosynthetic rate of the similar environment data SED based on the latest dark breathing rate on the date of the environment data ED and the dark breathing rate on the date of the similar environment data SED. The consumption rate calculation unit 112 calculates a rate UD at which carbon dioxide is consumed indicating the relationship between the corrected pure photosynthetic rate and the carbon dioxide concentration ICD in the greenhouse 1 included in the similar environment data SED (step S220).
The consumption speed calculation unit 112 outputs the calculated speed UD for consuming carbon dioxide to the application speed estimation unit 113.

The application speed estimation unit 113 acquires the speed UD at which carbon dioxide is consumed from the consumption speed calculation unit 112. The application speed estimation unit 113 acquires the ventilation frequency VC from the ventilation frequency calculation unit 16. The application speed estimation unit 113 acquires the air volume AC from the greenhouse information device 18. The application rate estimation unit 113 estimates the CP curve for the plant NP in the current greenhouse 1 from the above-described equation (1) (step S230). Application speed estimation unit 113 outputs a CP curve to display unit 114.

The display unit 114 acquires a CP curve from the application speed estimation unit 113. The display unit 114 displays the CP curve acquired from the application speed estimation unit 113 (step S240).

In addition, when the manager of the greenhouse 1 sets a condition for determining that the effect of applying carbon dioxide can be expected in advance, the application rate estimation unit 113 sets the greenhouse rate based on the condition and the calculated CP curve. The application rate of carbon dioxide applied in 1 is calculated. The application rate estimation unit 113 outputs the calculated application rate of carbon dioxide applied in the greenhouse 1 to the carbon dioxide application control device 17. The carbon dioxide application control device 17 acquires the application speed of carbon dioxide applied to the greenhouse 1 from the application speed estimation unit 113. The carbon dioxide application control device 17 controls the application speed of the amount of carbon dioxide acquired from the application speed estimation unit 113.
The carbon dioxide application support apparatus 100 repeatedly performs the process of the flowchart S2 described above.

[Specific Example of Operation of Carbon Dioxide Application Support Device 100]
Next, an example of a specific example of the operation of the carbon dioxide application support apparatus 100 will be described with reference to FIGS.
FIG. 5 is a diagram illustrating an example of environment data ED stored in the storage unit 110.

[Example of environmental data ED]
The storage unit 110 stores the date when the environmental data ED was generated, the time when the environmental data ED was generated, the light intensity LS in the greenhouse 1, the temperature TV in the greenhouse 1, and the saturation HD in the greenhouse 1. , Carbon dioxide concentration ICD in the greenhouse 1, carbon dioxide concentration OCD outside the greenhouse 1, information on the application rate of carbon dioxide applied by the carbon dioxide application controller 17, and pure photosynthesis corresponding to the application rate of carbon dioxide The speed UD that consumes carbon dioxide indicating the speed and the ventilation frequency VC are stored in association with each other. In this example, the storage unit 110 stores environmental data ED measured every 5 minutes for the past month.

Specifically, the storage unit 110 stores environment data ED indicating the April 1 dark breathing rate and environment data ED indicating the April 1 pure light synthesis rate. Similarly to April 1, the storage unit 110 includes environmental data ED indicating the dark respiration rate of April 20 and April 30, and environmental data ED indicating the pure photosynthesis rate of April 1. Is remembered. Here, the environmental data ED of April 20 is environmental data ED during the growth of the plant NP. The environmental data ED on April 30 is the latest environmental data ED.
More specifically, in the storage unit 110, the date is “4/1”, the time is “0:00”, and the light intensity LS in the greenhouse 1 is “0” (μmol m ⁻² s ⁻¹ ). The temperature TV in the greenhouse 1 is “15” (° C.), the saturation HD in the greenhouse 1 is “2.08” (kPa), and the carbon dioxide concentration ICD in the greenhouse 1 is “450” (mol mol mol). ⁻¹ ), the carbon dioxide concentration OCD outside the greenhouse 1 is “440” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the net photosynthesis rate is “−0.4”. “(Mol s ⁻¹ )” and “1” (h ⁻¹ ) are stored in association with each other.
In the storage unit 110, the date is “4/1”, the time is “10:00”, the light intensity LS in the greenhouse 1 is “930” (μmol m ⁻² s ⁻¹ ), The temperature TV is “29.0” (° C.), the saturation HD in the greenhouse 1 is “2.58” (kPa), and the carbon dioxide concentration ICD in the greenhouse 1 is “650” (mol mol ⁻¹ ). The carbon dioxide concentration OCD outside the greenhouse 1 is “444” (mol mol ⁻¹ ), the carbon dioxide application rate is “30.1” (L min ⁻¹ ), and the pure photosynthesis rate is “1.2” (mol s ⁻¹ ) and the ventilation frequency “1” (h ⁻¹ ) are stored in association with each other.
Similarly, the storage unit 110 stores data after 5 minutes and after 10 minutes.

In the storage unit 110, the date is “4/20”, the time is “0:00”, the light intensity LS in the greenhouse 1 is “0” (μmol m ⁻² s ⁻¹ ), The temperature TV is “17” (° C.), the saturation HD in the greenhouse 1 is “1.88” (kPa), the carbon dioxide concentration ICD in the greenhouse 1 is “470” (mol mol ⁻¹ ), the greenhouse The carbon dioxide concentration OCD outside 1 is “440” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the pure photosynthesis rate is “−0.75” (mol s ^−1). ) And the ventilation frequency “1” (h ⁻¹ ) are stored in association with each other.
In the storage unit 110, the date is “4/20”, the time is “13:00”, the light intensity LS in the greenhouse 1 is “924” (μmol m ⁻² s ⁻¹ ), The temperature TV is “32.1” (° C.), the saturation HD in the greenhouse 1 is “2.02” (kPa), and the carbon dioxide concentration ICD in the greenhouse 1 is “639” (mol mol ⁻¹ ). The carbon dioxide concentration OCD outside the greenhouse 1 is “440” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the pure photosynthesis rate is “2.1” (mol s ^{− 1} ) and the ventilation frequency “1” (h ⁻¹ ) are stored in association with each other.
Similarly, the storage unit 110 stores data after 5 minutes and after 10 minutes.

In the storage unit 110, the date is “4/30”, the time is “0:00”, the light intensity LS in the greenhouse 1 is “0” (μmol m ⁻² s ⁻¹ ), The temperature TV is “19” (° C.), the saturation HD in the greenhouse 1 is “2.30” (kPa), the carbon dioxide concentration ICD in the greenhouse 1 is “432” (mol mol ⁻¹ ), and the greenhouse The carbon dioxide concentration OCD outside 1 is “444” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the pure photosynthesis rate is “−1.0” (mol s ^−1). ) And the ventilation frequency “1” (h ⁻¹ ) are stored in association with each other.
In the storage unit 110, the date is “4/30”, the time is “10:00”, the light intensity LS in the greenhouse 1 is “920” (μmol m ⁻² s ⁻¹ ), The temperature TV is “32.1” (° C.), the saturation HD in the greenhouse 1 is “2.00” (kPa), and the carbon dioxide concentration ICD in the greenhouse 1 is “441” (mol mol ⁻¹ ). The carbon dioxide concentration OCD outside the greenhouse 1 is “445” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the pure photosynthesis rate is “3.0” (mol s ^{− 1} ) and the ventilation frequency “1” (h ⁻¹ ) are stored in association with each other.

The environmental data acquisition unit 111 indicates that the date is “4/30”, the time is “0:00”, the light intensity LS in the greenhouse 1 is “920” (μmol m ⁻² s ⁻¹ ), and the inside of the greenhouse 1 Temperature TV is "32.1" (° C), the saturation HD in the greenhouse 1 is "2.00" (kPa), and the carbon dioxide concentration ICD in the greenhouse 1 is "441" (mol mol ^-1 ) The carbon dioxide concentration OCD outside the greenhouse 1 is “445” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the pure photosynthesis rate is “3.0” (mol s ^-1 ) and the ventilation frequency “1” (h ⁻¹ ) are acquired in association with each other, the allowable range for acquiring the similar environment data SED from the storage unit 110 is set to “± 1” ( %) Will be described. In this case, the environmental data acquisition unit 111 determines that the temperature TV in the greenhouse 1 ranges from “910.8” to “929.2” and the light intensity LS in the greenhouse 1 is “from the storage unit 110. Environment data ED having data in the range from 31.779 ”to“ 32.421 ”and the saturation HD in the greenhouse 1 between“ 19.8 ”and“ 20.2 ”is similar environment data. Obtain as SED.

In other words, the environment data acquisition unit 111 indicates that the date is “4/30”, the time is “10:00”, the light intensity LS in the greenhouse 1 is “920” (μmol m ⁻² s ⁻¹ ), The temperature TV in the greenhouse 1 is “32.1” (° C.), the saturation HD in the greenhouse 1 is “2.00” (kPa), and the carbon dioxide concentration ICD in the greenhouse 1 is “441” (mol mol) ⁻¹ ), the carbon dioxide concentration OCD outside the greenhouse 1 is “455” (mol mol ⁻¹ ), the carbon dioxide application rate is “0” (L min ⁻¹ ), and the net photosynthesis rate is “3.0”. The environmental data ED in which (mol s ⁻¹ ) and the ventilation frequency are “1” (h ⁻¹ ) are associated with each other, and the allowable range for acquiring the similar environmental data SED from the storage unit 110 is set to “± The case of 1 ″ (%) will be described. In this case, the environmental data acquisition unit 111 reads from the storage unit 110 that the light intensity LS in the greenhouse 1 in the greenhouse 1 is “910.8” (μmol m ⁻² s ⁻¹ ) to “929.2” ( μmol m ⁻² s ⁻¹ ), the temperature TV in the greenhouse 1 is in the range from “31.779” (° C.) to “32.421” (° C.), and the temperature difference in the greenhouse 1 The environment data ED having data in which the HD is between “19.8” (kPa) and “20.2” (kPa) is acquired as the similar environment data SED.

In the example shown in FIG. 5, the past environment data ED that falls within the range of “± 1” (%) is the environment data ED with the date “4/20” and the time “13:00”. The environment data acquisition unit 111 acquires the environment data ED with the date “4/20” and the time “13:00” as the similar environment data SED.
An example of past environmental data ED that does not fall within the range of “± 1” (%) is environmental data ED with the date “4/20” and the time “13:05”. In the environmental data ED with the date “4/20” and the time “13:05”, the light intensity LS in the greenhouse 1 and the saturation HD in the greenhouse 1 are not within the range. For this reason, the environment data acquisition unit 111 does not select the environment data ED with the date “4/20” and the time “13:05”.

[Calculation of Carbon Dioxide Concentration ICD in Greenhouse 1 and Pure Photosynthesis Rate]
Next, with reference to FIG.6 and FIG.7, the speed UD which consumes the carbon dioxide which the consumption speed calculation part 112 calculates is demonstrated.
FIG. 6 is a diagram illustrating an example of the relationship between the carbon dioxide concentration ICD in the greenhouse 1 and the pure photosynthetic rate.

The consumption speed calculation unit 112 acquires the environment data ED and the similar environment data SED from the environment data acquisition unit 111. The consumption rate calculation unit 112 is based on the environmental conditions indicated by the environment data ED based on the relationship between the carbon dioxide concentration ICD in the greenhouse 1 included in the similar environment data SED acquired from the environment data acquisition unit 111 and the pure photosynthetic rate. The rate UD at which the carbon dioxide of the plant NP is consumed is calculated.
Specifically, the consumption rate calculation unit 112 shows the relationship between the carbon dioxide concentration ICD in the greenhouse 1 included in the similar environment data SED on the horizontal axis and the net photosynthetic rate of the plant NP in the greenhouse 1 on the vertical axis. Generate a graph. More specifically, the consumption rate calculation unit 112 calculates a relative value between the latest dark breathing rate and the latest dark breathing rate on the day when the similar environment data SED is recorded. The consumption speed calculation unit 112 corrects the pure light synthesis speed included in the similar environment data SED based on the calculated relative value. The consumption rate calculation unit 112 plots the corrected net photosynthetic rate on a graph showing the relationship between the carbon dioxide concentration ICD in the greenhouse 1 and the net photosynthesis rate of the plant NP in the greenhouse 1 on the vertical axis.

The consumption speed calculation unit 112 repeats the process until the correction of the pure light synthesis speed included in all the similar environment data SED acquired by the environment data acquisition unit 111 is completed.
The consumption speed calculation unit 112 performs regression analysis on each value of the corrected pure light synthesis speed. The consumption speed calculation unit 112 calculates a regression line L1 shown in FIG. 6 as a result of regression analysis of the corrected pure light synthesis speed.

In the above description, the consumption rate calculation unit 112 consumes carbon dioxide based on the graph indicating the relationship between the carbon dioxide concentration ICD in the greenhouse 1 and the net photosynthesis rate of the plant NP in the greenhouse 1 on the vertical axis. Although the case where the speed UD to be calculated is described is an example for explanation, the consumption speed calculation unit 112 does not need to plot the graph. The consumption rate calculation unit 112 may perform regression analysis based on the corrected pure photosynthetic rate and the carbon dioxide concentration.

Next, with reference to FIG. 7, the difference between the case where the consumption speed calculation unit 112 corrects the pure light synthesis speed of the similar environment data SED and the case where the correction is not performed will be described.
FIG. 7 is a diagram illustrating an example of the case where correction is made to the pure light combining speed of the similar environment data SED and the case where correction is not performed.
FIG. 7A is an example of the pure light synthesis rate calculated by performing correction based on the relative value calculated from the dark respiration rate.
FIG. 7B is an example of a case where the pure respiration rate included in the similar environment data SED is plotted as it is without correction.
Comparing FIG. 7 (a) with FIG. 7 (b), it can be seen that FIG. 7 (a) after correction can obtain a pure light synthesis speed approximate to the measured pure light synthesis speed.

[Estimation of CP curve]
Next, the CP curve estimated by the application speed estimation unit 113 will be described.
FIG. 8 is a diagram illustrating an example of a CP curve estimated by the application speed estimation unit 113.
FIG. 8 is a diagram illustrating an example of a CP curve estimated by the application rate estimation unit 113 at a certain time on the 18th day after the carbon dioxide application support apparatus 100 acquires the environmental information in the greenhouse 1.
FIG. 8 shows that the light intensity LS in the greenhouse 1 is “200” (μmol m ⁻² s ⁻¹ ), and the allowable range of the similar environment data SED acquired from the storage unit 110 is “± 50” (μmol m ⁻² s ^{− 1} ), the temperature TV in the greenhouse 1 is “25” (° C.), and the allowable range of the similar environmental data SED acquired from the storage unit 110 is “± 5” (° C.), and the saturation HD in the greenhouse 1 is “ The allowable range of the similar environment data SED acquired from 1.5 ”(kPa) and the storage unit 110 is a CP curve calculated from the similar environment data SED that meets the environmental condition of“ ± 1.0 ”(kPa).

FIG. 9 is a diagram illustrating an example of a CP curve estimated by the application speed estimation unit 113.
FIG. 9 is a diagram illustrating an example of a CP curve estimated by the application rate estimation unit 113 at a certain time on the 18th day after the carbon dioxide application support apparatus 100 acquires environmental information in the greenhouse 1.
FIG. 9 shows that the light intensity LS in the greenhouse 1 is “300” (μmol m ⁻² s ⁻¹ ), and the allowable range of the similar environment data SED acquired from the storage unit 110 is “± 50” (μmol m ⁻² s ^{− 1} ), the temperature TV in the greenhouse 1 is “30” (° C.), and the allowable range of the similar environmental data SED acquired from the storage unit 110 is “± 5” (° C.), and the saturation HD in the greenhouse 1 is “ The allowable range of the similar environment data SED acquired from 2.0 ”(kPa) and the storage unit 110 is a CP curve estimated from the similar environment data SED that meets the environmental condition of“ ± 1.0 ”(kPa).

Comparing the regression line L2 shown in FIG. 8 and the regression line L3 shown in FIG. 9, it can be seen that the environment shown in FIG. 9 is more effective in increasing the net photosynthetic rate of the plant NP by applying carbon dioxide. The manager of the greenhouse 1 inputs conditions for determining the application rate of carbon dioxide in the greenhouse 1 based on the shape of the regression line.

[Relationship between environmental data ED and CP curve estimation accuracy]
Up to this point, an example of the operation in which the carbon dioxide application support apparatus 100 calculates the CP curve has been described.
Next, the relationship between the amount of environmental data ED stored in the storage unit 110 and the accuracy of the pure photosynthetic rate estimated by the carbon dioxide application support apparatus 100 will be described with reference to FIGS.
FIG. 10 is a diagram illustrating an example of the relationship between the amount of environmental data ED stored in the storage unit 110 and the pure light synthesis speed calculated by the consumption speed calculation unit 112.
FIG. 10A shows an example of the pure light synthesis rate calculated by the consumption rate calculation unit 112 when seven days of environmental data ED is stored in the storage unit 110.
FIG. 10B shows an example of the pure light synthesis rate calculated by the consumption rate calculation unit 112 when the storage unit 110 stores 12 days of environmental data ED.
FIG. 10C shows an example of the pure light synthesis rate calculated by the consumption rate calculation unit 112 when the storage unit 110 stores 17 days of environmental data ED.
The consumption rate calculation unit 112 can calculate an accurate pure light synthesis rate as the environmental data ED accumulated in the storage unit 110 increases.

FIG. 11 is a diagram illustrating an example of a relationship between the allowable range of the similar environment data SED acquired by the environment data acquisition unit 111 from the storage unit 110 and the pure light synthesis speed calculated by the consumption speed calculation unit 112.
In FIG. 11A, the consumption rate calculation unit 112 is set based on the result of acquiring the similar environment data SED from the storage unit 110 by setting the allowable range of the light intensity LS in the greenhouse 1 to “± 10”. Shows an example of the pure light synthesis rate calculated by
In FIG. 11B, the consumption rate calculation unit 112 is set based on the result of acquiring the similar environment data SED from the storage unit 110 by setting the allowable range of the light intensity LS in the greenhouse 1 to “± 50”. Shows an example of the pure light synthesis rate calculated by
In FIG. 11C, the consumption rate calculation unit 112 is set based on the result of acquiring the similar environment data SED from the storage unit 110 by setting the allowable range of the light intensity LS in the greenhouse 1 to “± 300”. Shows an example of the pure light synthesis rate calculated by
The consumption speed calculation unit 112 can calculate a more accurate pure light synthesis speed as the allowable range is narrower. In this case, sufficient environmental data ED is preferably stored in the storage unit 110. When the allowable range of the similar environmental data SED acquired by the environmental data acquisition unit 111 is narrowed, if the sufficient environmental data ED is not accumulated in the storage unit 110, the similar environmental data SED acquired by the environmental data acquisition unit 111 is not stored. The number decreases. If the similar environment data SED is small, the consumption speed calculation unit 112 may not be able to accurately calculate the pure light synthesis speed.

As described above, the carbon dioxide application support apparatus 100 includes the environmental condition acquisition unit 101, the exchange rate calculation unit 108, the environmental data generation unit 109, the environmental data acquisition unit 111, the consumption rate calculation unit 112, And an application speed estimation unit 113.
The environmental condition acquisition unit 101 acquires environmental conditions inside and outside the greenhouse 1 from the measurement unit 10 provided in the greenhouse 1. The exchange rate calculation unit 108 calculates the carbon dioxide exchange rate PS of the plant NP in the greenhouse 1 based on the environmental conditions acquired by the environmental condition acquisition unit 101 and the air volume AC of the greenhouse 1. The carbon dioxide exchange rate PS is the net photosynthesis rate and dark respiration rate of the plant NP. The exchange rate calculation unit 108 calculates a dark respiration rate and a pure photosynthetic rate performed by the plant NP in the greenhouse 1 based on the light intensity LS in the greenhouse 1.

The environmental data generation unit 109 associates the environmental condition acquired by the environmental condition acquisition unit 101 with the carbon dioxide exchange rate PS calculated by the exchange rate calculation unit 108 and stores it in the storage unit 110 as environmental data ED. The environment data acquisition unit 111 acquires environment data ED similar to the environment data ED generated by the environment data generation unit 109 from the storage unit 110 as similar environment data SED. The consumption rate calculation unit 112 is a rate at which the plant NP in the greenhouse 1 at the time of acquiring the environment data ED consumes carbon dioxide based on the environment data ED acquired by the environment data acquisition unit 111 and the similar environment data SED. UD is calculated. Here, the consumption rate calculation unit 112 calculates the rate UD at which carbon dioxide is consumed by performing correction based on a relative value between the latest dark respiration rate of the plant NP and the past dark respiration rate of the plant NP. .

The application speed estimation unit 113 estimates the CP curve based on the speed UD that consumes the carbon dioxide calculated by the consumption speed calculation unit 112.
That is, the application rate estimation unit 113 calculates a curve of the pure photosynthetic rate with respect to the carbon dioxide application rate according to the environmental conditions inside and outside the greenhouse 1. The application speed estimation unit 113 displays the calculated CP curve as a graph on the display unit 114. Thereby, the manager of the greenhouse 1 inputs conditions for determining the rate of applying carbon dioxide into the greenhouse 1 from the shape of the graph indicated by the CP curve. For example, even if the window 20 provided in the greenhouse 1 is opened to adjust the environment in the greenhouse 1, the carbon dioxide application support apparatus 100 is based on the change in the consumption efficiency of carbon dioxide due to the change in the plant growth environment. Thus, the application rate of carbon dioxide for applying the amount of carbon dioxide corresponding to the consumption efficiency into the greenhouse can be automatically and sequentially estimated according to the conditions input by the administrator.
Heretofore, the application rate estimation unit 113 has been described with respect to the case where the estimated application rate AS of carbon dioxide is displayed using a CP curve. The application rate AS of carbon dioxide estimated by the application rate estimation unit 113 is not limited to a curve. The application speed estimation unit 113 may display words, numerical values, charts, or the like based on the estimated degree of inclination of the CP curve or the sequential change of the CP curve.

Note that the carbon dioxide application support apparatus 100 described above may not include the storage unit 110. In this case, the carbon dioxide application support apparatus 100 may store the environmental data ED in another apparatus connected to the network, a server, or the like.

In the above-described embodiment, the method of obtaining the environmental data ED and calculating the CP curve until the plant NP in the greenhouse 1 is vegetated once and the plant NP is harvested has been described. When the same type of plant NP and the same amount of plant NP are repeatedly vegetated in the same greenhouse 1, the carbon dioxide application support apparatus 100 uses a part of the past environmental data ED to generate a CP curve. It may be estimated. If the environmental data ED can be used, the appropriate carbon dioxide application rate is sufficient even if the environmental data ED is insufficient when estimating the CP curve without using the environmental data ED in the current environment. AS can be estimated.

In the above-described embodiment, the carbon dioxide application support apparatus 100 has been described with respect to the configuration for estimating the CP curve illustrated in FIG. 8 or FIG. 9, but is not limited thereto. The application speed estimation unit 113 may further calculate a value related to the state of the plant NP based on the speed UD that consumes the carbon dioxide calculated by the consumption speed calculation unit 112. Specifically, the application speed estimation unit 113 may estimate the parameter calculated based on the pure light synthesis speed indicated on the vertical axis of the CP curve with the vertical axis. For example, the application rate estimation unit 113 may estimate the relationship between the carbon dioxide application rate applied to the plant NP in the greenhouse 1 and the degree of growth of the plant NP in the greenhouse 1. The degree of growth is a foliage part extension rate indicating the degree of extension of the foliage part including the growth point of the plant NP, or a stem increase rate indicating the degree of increase of the stem of the plant NP. The application rate estimation unit 113 may estimate the relationship between the carbon dioxide application rate applied to the plant NP in the greenhouse 1 and the transpiration rate of the plant NP in the greenhouse 1. The transpiration rate is the amount of transpiration per unit time of water vapor released from the plant NP into the atmosphere. In this example, the amount of transpiration per unit time of water vapor released from the plant NP into the greenhouse 1.

The degree of growth described above is further calculated based on a captured image in which a predetermined growth point of a certain plant NP in the greenhouse 1 is captured by an imaging device (not shown). In the captured image in which the predetermined growth point is captured, the form of the foliage part including the shoot apex growth point is captured. The shoot apex growth point is the growth point at the tip of the main stem.
The imaging device generates a plurality of captured images at predetermined intervals of the plant NP in the greenhouse 1 with a time interval. The application speed estimation unit 113 acquires a captured image generated by the imaging device. The application speed estimation unit 113 analyzes the foliage part elongation speed and the stem diameter increase speed of the plant NP based on a plurality of captured images acquired from the imaging device. Moreover, the application rate estimation part 113 may calculate the quantity of the fertilizer component given to the plant NP based on the analyzed foliage growth rate. When the application rate estimation unit 113 calculates the amount of the fertilizer component to be given to the plant NP based on the analyzed foliage growth rate, the storage unit 110 stores the types of fertilizer components according to the foliage growth rate in advance. Fertilizer component information indicating the amount is stored.

In the following description, the case where the plant NP is a tomato strain will be described. The imaging device images a plurality of growth points of the main tomato stem at intervals. The growth point of the main stem of tomato is in the range of 20-30 (cm) from the tip of the main stem. The application speed estimation unit 113 grows the growth point of the main stem based on the captured image captured at the time when the plant NP starts photosynthesis and the captured image captured at the time when the plant NP ends photosynthesis. The rate of elongation of the foliage and the rate of increase in stem are analyzed. In general, the elongation rate of the main stem indicating the degree of growth of tomatoes and the diameter (thickness) of the main stem vary depending on the components and amounts of the given fertilizer components. If the elongation rate of the main stem and the increase rate of the diameter of the main stem are known, it can be determined whether the growth environment conditions for several days were appropriate.
The application speed estimation unit 113 determines the current degree of growth of the tomato stock according to the increasing speed of the diameter of the main stem of the tomato stock captured in the captured image. The application rate estimation unit 113 calculates the component and amount of the fertilizer component to be given to the tomato strain in the greenhouse 1 based on the determined degree of growth of the tomato strain and the fertilizer component information stored in the storage unit 110. To do.

As described above, the application rate estimation unit 113 calculates the amount of the fertilizer component given to the plant NP based on the degree of growth of the plant NP, thereby growing the plant NP fertilizer component in the greenhouse 1 (other than the breeding organ). It is possible to evaluate the balance between the growth of the part) and the reproductive growth (growth of the reproductive organs), and to estimate the growth environment conditions so as to achieve a desirable balance at the present time. That is, the carbon dioxide application support apparatus 100 can appropriately estimate the amount of the fertilizer component supplied to the plant NP in the greenhouse 1 based on the environmental data ED and the captured image of the plant NP. In the above description, the type of plant NP is a tomato strain, but the tomato strain is an example, and the present invention is not limited to this.

Further, the application speed estimation unit 113 may further estimate the relationship between at least one condition among other environmental conditions in the greenhouse 1 and the speed UD that consumes carbon dioxide. Other environmental conditions in the greenhouse 1 are the saturation HD in the greenhouse 1, the temperature TV in the greenhouse 1, the liquid supply speed to the plant NP, and the like. Specifically, the application rate estimation unit 113 may set the carbon dioxide application rate UD applied to the plant NP in the greenhouse 1 indicated on the horizontal axis of the CP curve as another environmental condition in the greenhouse 1. That is, the application rate estimation unit 113 may estimate the relationship between the pure photosynthetic rate and environmental conditions other than the carbon dioxide application rate applied to the plant NP in the greenhouse 1.

In this case, the application rate estimation unit 113, based on the environment data ED acquired by the environment data acquisition unit 111 and the similar environment data SED, the latest dark respiration rate of the plant NP and the past darkness of the plant NP. By performing the correction based on the relative value with the respiration rate, the environment other than the net photosynthesis rate of the plant NP in the greenhouse 1 at the time of acquiring the environmental data ED and the carbon dioxide application rate applied to the plant NP in the greenhouse 1 Estimate the relationship with conditions.

Accordingly, the application rate estimation unit 113 is not limited to the relationship between the pure photosynthetic rate and the carbon dioxide application rate indicated by the CP curve, and can estimate information used for controlling the environment in which the plant NP in the greenhouse 1 is grown. it can.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and appropriate modifications may be made without departing from the spirit of the present invention. it can.

In addition, the above-mentioned carbon dioxide application assistance apparatus 100 has a computer inside. Each process of the above-described apparatus is stored in a computer-readable recording medium in the form of a program, and the above-described process is performed by the computer reading and executing the program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

The program may be for realizing a part of the functions described above.
Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 1 ... Greenhouse, 10 ... Measuring part, 11 ... Temperature sensor, 12 ... Light intensity sensor, 13 ... Indoor carbon dioxide concentration measuring sensor, 14 ... Outdoor carbon dioxide concentration measuring sensor, 15 ... Saturation calculation apparatus, 16 ... Ventilation frequency measurement , 17 ... carbon dioxide application control device, 18 ... greenhouse information device, 20 ... window, 100 ... carbon dioxide application support device, 114 ... display unit, 101 ... environmental condition acquisition unit, 102 ... temperature acquisition unit, 103 ... light intensity Acquiring unit, 104 ... Saturation acquiring unit, 105 ... Indoor carbon dioxide concentration acquiring unit, 106 ... Outdoor carbon dioxide concentration acquiring unit, 107 ... Ventilation frequency acquiring unit, 108 ... Exchange rate calculating unit, 109 ... Environmental data generating unit, 110 DESCRIPTION OF SYMBOLS ... Storage part 111 ... Environmental data acquisition part 112 ... Consumption rate calculation part 113 ... Application speed estimation part, TV ... Temperature in greenhouse, LS ... Light intensity in greenhouse, HD ... Saturation in greenhouse, CD: carbon dioxide concentration in the greenhouse, OCD: carbon dioxide concentration outside the greenhouse, VC: ventilation frequency, AC: air volume, ED: environmental data, SED: similar environmental data, UD: carbon dioxide consumption rate, AS ... Carbon dioxide application rate

Claims (6)

1. An environmental condition acquisition unit that acquires environmental conditions for growing plants from a measurement unit that measures the environment inside and outside the greenhouse that grows plants,
   Among the environmental conditions acquired by the environmental condition acquisition unit, based on the carbon dioxide concentration in the greenhouse, the carbon dioxide concentration outside the greenhouse, the ventilation frequency of the greenhouse, and the light intensity in the greenhouse, An exchange rate calculation unit for calculating an exchange rate of carbon dioxide performed by plants in the greenhouse;
   An environmental data generation unit that generates environmental data in which the environmental conditions acquired by the environmental condition acquisition unit and the carbon dioxide exchange rate calculated by the exchange rate calculation unit are associated with each other;
   Among the environmental data generated in the past by the environmental data generation unit, an environmental data acquisition unit that acquires environmental data similar to the environmental condition acquired by the environmental condition acquisition unit as similar environmental data;
   Based on the similar environment data acquired by the environment data acquisition unit and the carbon dioxide exchange rate calculated by the exchange rate calculation unit, a rate at which plants in the greenhouse consume carbon dioxide in the greenhouse is calculated. A consumption speed calculation unit to calculate,
   Based on the volume in the greenhouse, the consumption speed calculated by the consumption speed calculation unit, and the ventilation frequency of the greenhouse among the environmental conditions acquired by the environmental condition acquisition unit, it is applied to the greenhouse. A carbon dioxide application support apparatus comprising: an application speed estimation unit that estimates a relationship between an application speed of carbon dioxide and a consumption speed.
2. The consumption speed calculation unit
   2. The consumption rate is calculated based on a relative value between the carbon dioxide exchange rate calculated by the exchange rate calculation unit and the carbon dioxide exchange rate included in the similar environment data. Carbon dioxide application support device.
3. The carbon dioxide application support apparatus according to claim 2, wherein the application speed estimation unit further calculates a value related to the state of the plant based on the consumption speed calculated by the consumption speed calculation unit.
4. The values relating to the state of the plant include shoot and leaf growth speed indicating the speed of elongation of the shoot and leaf portion including the shoot apex growth point of the plant, and transpiration indicating the amount of water transpiration from the plant per unit time. The carbon dioxide application support apparatus according to claim 3, wherein at least one of speeds is included.
5. The environmental conditions include a condition of saturation in the greenhouse, a temperature condition in the greenhouse, a condition of a supply rate supplied to the plant,
   The carbon dioxide application support apparatus according to any one of claims 1 to 4, wherein the application speed estimation unit further estimates a relationship between at least one of the environmental conditions and the consumption speed. .
6. On the computer,
   An environmental condition acquisition step for acquiring an environmental condition for growing the plant from a measurement unit that measures the environment inside and outside the greenhouse for growing the plant;
   Of the environmental conditions acquired in the environmental condition acquisition step, based on the carbon dioxide concentration in the greenhouse, the carbon dioxide concentration outside the greenhouse, the ventilation frequency of the greenhouse, and the light intensity in the greenhouse. A respiration rate calculating step of calculating a carbon dioxide exchange rate performed by the plants in the greenhouse;
   An environmental data generating step for generating environmental data in which the environmental condition acquired in the environmental condition acquiring step and the carbon dioxide exchange rate calculated in the respiration rate calculating step are associated with each other;
   An environmental data acquisition step for acquiring environmental data similar to the environmental condition acquired in the environmental condition acquisition step as similar environmental data from the environmental data generated in the past in the environmental data generation step;
   Based on the similar environment data acquired in the environmental data acquisition step and the carbon dioxide exchange rate calculated in the respiration rate calculation step, plants in the greenhouse consume carbon dioxide in the greenhouse. A consumption speed calculation step for calculating a speed;
   Based on the volume in the greenhouse, the consumption speed calculated in the consumption speed calculation step, and the ventilation frequency of the greenhouse among the environmental conditions acquired in the environmental condition acquisition step, A carbon dioxide application support program for executing an application rate estimation step for estimating a relationship between an application rate of applied carbon dioxide and the consumption rate.

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