JP7150270B2 - Cultivation facility - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cultivation facility in which the amount of solar radiation to be taken indoors and the indoor illuminance are adjustable.

Conventionally, in a cultivation facility in which the amount of indoor solar radiation and the indoor illuminance can be adjusted, an electric motor is used to open and close a windable light-shielding curtain, and by adjusting the degree of opening, the indoor solar radiation amount is controlled. The lighting is adjusted so that the indoor lighting is suitable for the growth of plants. For example, when the indoor illuminance is too high for a given illuminance suitable for growing plants, the shading curtains are closed to reduce the amount of solar radiation entering the room. Conversely, when the illuminance is insufficient , a cultivation facility is known in which a shading curtain is opened to increase the amount of solar radiation taken into the room, and a supplementary light lamp is irradiated as necessary to compensate for the excess or deficiency of illuminance ( Patent document 1).

JP 2011-45317 A

However, when the indoor illuminance is adjusted using an electric light-shielding curtain as described in Patent Document 1, it is difficult to precisely adjust the amount of solar radiation taken indoors due to the structure of the light-shielding curtain, and the indoor illuminance spots were also likely to occur. As a result, there is room for improvement in terms of adjusting the indoor illuminance evenly and more precisely.
In addition, the power consumption associated with the driving of the electric light shielding curtain and the irradiation of the supplementary light lamp is large, which is uneconomical. In particular, in cultivation facilities installed in mountainous areas, it is often difficult to secure a power supply, and there is a demand for energy saving in cultivation facilities.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cultivation facility that enables even and more precise adjustment of indoor illuminance and contributes to energy saving.

Such objects of the present invention are
A louver device comprising a plurality of louvers arranged parallel to each other on the same plane at regular intervals and configured to be rotatable in synchronization, and solar panels respectively arranged on the light shielding surfaces of the plurality of louvers. When,
illuminance measuring means for measuring actual illuminance in the cultivation facility;
an environment control unit configured to be able to control the louver device;
The environment control unit acquires information on the actual illuminance measured by the illuminance measuring means, and controls the rotation direction and the rotation angle of the plurality of louvers based on the measured value of the indoor actual illuminance. achieved by the facility.

According to the cultivation facility of the present invention, based on the measured value of the actual illuminance measured by the illuminance measuring means, the environmental control unit that controls the rotation direction and rotation angle of the plurality of louvers controls the amount of solar radiation blocked by the plurality of louvers. can be adjusted, which makes it possible to finely adjust the amount of solar radiation to be taken into the room, and as a result, it is possible to adjust the illuminance of the room evenly and more precisely. In addition, power generation by the solar panels arranged on the light shielding surfaces of the plurality of louvers can save energy in the cultivation facility.

In a preferred embodiment of the present invention, the louver section is configured to include a storage battery for charging power generated by the solar panel, and a power connector capable of extracting power from the solar panel or the storage battery.

According to this preferred embodiment of the present invention, the power connector allows power to be extracted and supplied to each device. In addition, it is possible to reduce wiring of power cables for supplying electric power to indoor devices. This improves the convenience of the cultivation facility.

In a further preferred embodiment of the present invention, the environment control unit includes means for acquiring information on the direction and angle of incidence of sunlight, acquires the reference illuminance information stored in the storage unit, and uses the information as the reference illuminance information. When the included reference illuminance set value exceeds the actual illuminance measured value, the plurality of louvers are rotated by a predetermined angle so that the light shielding surfaces of the plurality of louvers face a direction parallel to the incident direction of sunlight. and reducing the amount of light shielded by the plurality of louvers so that when the set value of the reference illuminance is lower than the measured value of the actual illuminance, the light shielding surfaces of the plurality of louvers face the direction opposite to the incident direction of sunlight. The louver device is configured to rotate the plurality of louvers by a predetermined angle to increase the amount of light shielded by the plurality of louvers.

According to this further preferred embodiment of the present invention, the environment control unit acquires information on the incident direction and angle of sunlight, and based on this information, the reference illuminance information stored in the storage unit and the illuminance measurement By comparing the values of the actual illuminance information acquired from the unit, the light shielding amount of the plurality of louvers can be adjusted, and control can be performed to increase or decrease the amount of solar radiation introduced. As a result, it is possible to finely adjust the amount of solar radiation taken indoors in response to changes in the solar radiation angle, etc. As a result, it is possible to more precisely adjust the indoor illuminance evenly.

Advantageous Effects of Invention According to the present invention, it is possible to provide a cultivation facility that enables even and more precise adjustment of indoor illuminance and contributes to energy saving.

FIG. 1 is an internal configuration diagram of a cultivation facility according to a preferred embodiment of the present invention. 2 is a schematic perspective view of the vicinity of the louver device of FIG. 1. FIG. FIG. 3 is a system configuration diagram related to environmental control within a cultivation facility. FIG. 4 is a configuration diagram of a cultivation facility control system according to a preferred embodiment of the present invention. FIG. 5 is an explanatory diagram for explaining an operation example of the louver device of FIG. FIG. 6 is an explanatory diagram for explaining an operation example of the louver device of FIG. FIG. 7 is an explanatory diagram for explaining an operation example of the louver device of FIG. FIG. 8 is an explanatory diagram for explaining the relationship between the reference illuminance and the actual illuminance. 9 is a flowchart of illuminance adjustment control by the environment control unit of FIG. 4. FIG. FIG. 10 is an internal configuration diagram of a cultivation facility showing another arrangement example of the louver device of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is an internal configuration diagram of a cultivation facility according to a preferred embodiment of the present invention. In the following description, the amount of solar radiation introduced into the interior of the cultivation facility, which is obtained by subtracting the amount of light shielding from the amount of solar radiation, is referred to as the amount of solar radiation introduced. As shown in FIG. 1, the cultivation facility 1 includes a louver device 11 having a function of adjusting the amount of solar radiation introduced into the room, and a gas supply device for supplying a gas (hereinafter referred to as application gas) for promoting the growth of cultivated plants. It comprises an apparatus 12, an environment control unit 13 that controls the growth environment in the cultivation facility by controlling various devices, and an environment measurement unit 14 that acquires measured values related to the growth environment in the cultivation facility.

In addition, the louver device 11 includes a top louver device 11A that adjusts the amount of sunlight entering the cultivation facility 1 from above and a side louver device 11B that adjusts the amount of sunlight entering from the side. It is configured. The upper louver device 11A and the side louver device 11B are supported by branch pipes 15, which are hollow tubular bodies.

The gas supply pipe 16 is a tubular body having an air-permeable pipe wall in which a large number of fine holes are formed along the entire circumference, and is configured to uniformly disperse the gas inside the tubular body to the outside. there is Thereby, the gas supply pipe 16 connected to the gas supply device 12 receives the application gas from the gas supply device 12 and functions to spread the application gas. The gas supply pipe 16 is supported by the branch pipe 15 by a hook-shaped locking member 15a. The timing of supply of the application gas is configured to be controllable by the environment control unit 13, which will be described later. As application gas, carbon dioxide, air, etc. can be supplied, for example.

A plurality of supplementary light lamps 17 configured by arranging light sources such as LEDs in parallel are provided in the indoor upper part of the cultivation facility 1 , and are configured to be lighting controllable by the environment control unit 13 . In addition, a plurality of blower fans 18 capable of blowing air upward to the plants are provided near the indoor ground surface. A skylight 19 whose opening and closing can be controlled by the environment control unit 13 is provided on the ceiling of the cultivation facility 1 . The plurality of blower fans 18 are driven to blow air upward, thereby blowing air to the underside of the leaves of the plants, thereby lowering the temperature of the leaves of the plants and reducing the carbon dioxide present in the leaf surface boundary layer. It removes carbon and helps plants respire. Furthermore, by controlling the opening of the skylight 19 at the same time when the blower fan 18 is driven, the air can be preferably blown upward.

FIG. 2 is a schematic perspective view of the vicinity of the louver device 11 of the cultivation facility according to the preferred embodiment of the present invention.
The upper louver device 11A and the side louver device 11B each have a light shielding surface that is a rectangular flat surface, and are composed of a plurality of louvers 121 that are arranged parallel to each other on the same plane at regular intervals. A section 120 is provided. The plurality of louvers 121 are rotatably provided in synchronization with each other so that the angle of inclination of the light shielding surface can be changed. It can be controlled by the environment control unit 13 via the louver control device 110 that is enabled. In addition, according to the conventional light-shielding curtain structure, the light-shielding curtain reduces the indoor air permeability, and the warmed air flow excessively stays under the light-shielding curtain, which causes stress to the plants. According to the configuration for shielding light by the plurality of louvers 121, air permeability is ensured by the gaps existing between the louvers 121, so such a problem can be preferably prevented.

FIG. 3 is a schematic cross-sectional view of the louver device 11 of FIG.
As shown in FIG. 3, the louver control device 110 includes a louver control unit 111 that controls the rotation of the plurality of louvers 121, a drive mechanism 112 that rotates the plurality of louvers 121 by driving, and each mechanism of the louver control device 110. and a power supply 113 for supplying power to the . Also, the louver control unit 111 acquires a control signal from the environment control unit 13 and drives and controls the driving mechanism 112 by means of the louver communication unit 114 configured to be able to transmit and receive information to and from the environment control unit 13 . The drive mechanism 112 is connected to the drive shaft of the louver portion 120, and according to the rotation of this drive shaft, the plurality of louvers 121 rotate in synchronization, and the inclination angle of the light shielding surface can be changed. . Note that the mechanism for changing the tilt angle of the light shielding surface is disclosed in Japanese Patent Application Laid-Open No. 2017-78316, so detailed description thereof will be omitted.

The louver 121 includes a light shielding portion 121a which is a base capable of shielding sunlight and has a light shielding surface, a solar panel 121b disposed on the light shielding surface, and a unit portion 130 disposed below the light shielding portion 121a. and Since the louver device 121 includes the solar panel 121b, the louver section 120 has a power generation function in addition to a sunlight shielding function. Electric power generated by the solar panel 121b is stored in a storage battery 132, which will be described later, included in the unit section 130, and can be used by each mechanism. As a result, the louver section 120 can use the electric power generated by the solar panel 121b as driving electric power for the louver device 110, and can also supply the electric power to other devices.

FIG. 4 is a configuration diagram of a control system for cultivation facility 1 according to a preferred embodiment of the present invention.

FIG. 4 is a system configuration diagram for environmental control in the cultivation facility 1. As shown in FIG.
The environment control unit 13 is an electronic control mechanism having a CPU, a storage device, stored programs (none of which are shown), and the like. The environment control unit 13 is a control device that controls various devices in order to control the growing environment in the cultivation facility. , skylight 19 and other mechanisms. In addition, it is configured to be able to acquire measurement information of the environment measurement unit 14, the GPS module 20, and the illuminance measurement unit 131, which will be described later.

The environment measurement unit 14 is an environment measurement sensor group including a plurality of sensors for measuring environmental values such as temperature, humidity, illuminance, and carbon dioxide concentration in the cultivation facility 1. Transmission to the control unit 13 is possible.

The GPS module 20 is a sensor that uses information acquired from a GPS (Global Positioning System) to detect the position (for example, latitude and longitude) of the cultivation facility.

The setting unit 21 is an operation panel for the user to input and set information to the environment control unit 13 .

The storage unit 22 stores necessary data for control of the environment control unit 13 . For example, various measurement information of the environment measurement unit 14 and the illuminance measurement unit 131, execution history of the environment control unit 13, input information from the setting unit 21, position information acquired by the GPS module 20, date and time information, and sun direction information. Various types of information such as astronomical data to be displayed and reference illuminance indicating a desirable reference illuminance for the growth of plants to be cultivated are stored. Measured values of the illuminance measurement unit 131 and the environment measurement unit 14 are also stored.

The louver device 11 is a mechanism for adjusting the amount of solar radiation introduced. is provided with a louver control device 110 that can adjust the .

Here, since the louver control unit 111, the driving mechanism 112, the power source 113, and the louver communication unit 114 are as described above, description thereof will be omitted.

Since the louver portion 120 and the louver 121, the light shielding portion 121a, and the solar panel 121b included in the louver portion 120 are also as described above, the description thereof will be omitted.

A unit section 130 included in the louver section 120 includes an illuminance measuring section 131 , a storage battery 132 , a power connector 133 and a unit communication section 134 .

The illuminance measuring unit 131 is an illuminance sensor that is arranged below each louver 121 and capable of measuring the actual illuminance, which is the indoor illuminance of the cultivation facility 1 . The illuminance sensor is arranged on the upper surface of a box-shaped unit arranged below the louver 121 . Since the illuminance measuring unit 131 is arranged below the louvers 121, the environment control unit 13 can acquire the amount of solar radiation introduced into the cultivation facility through the louvers 121 for each louver 121. there is Incidentally, the environment control unit 13 calculates the average value of the acquired solar radiation introduction amount for each louver 121 and judges this as the total solar radiation introduction amount and the actual illuminance in the cultivation facility 1 . In addition, the illuminance sensor may be configured to be suspended below the unit portion of the box in order to more preferably acquire the measured value of illuminance. The measured value of the actual illuminance in the cultivation facility 1 is obtained from the measured value of the illuminance sensor by the illuminance measuring unit 131, but the measured value of the illuminance measured by the environment measuring unit 14 arranged near the cultivated plant. can also be used as a measure of actual illuminance. In this case, the illuminance near the plant to be cultivated can be obtained more accurately as the actual illuminance.

The storage battery 132 is arranged in the unit section 130 and can be charged with electric power generated by the solar panel 121b. As a result, the power generated by the solar panel 121b is used to drive each mechanism such as the illuminance measuring unit 131, and the storage battery 132 is charged with surplus power. In addition, the electric power charged in the storage battery 132 can be used for illumination of the auxiliary light lamp 17, so that when the amount of solar radiation is excessive, the electric power is charged in the storage battery 132, and when the amount of solar radiation is insufficient. , the storage battery 132 can be used to illuminate the auxiliary light lamp 17 . As a result, the energy saving of the cultivation facility 1 and the lack of sunshine for the plants can be resolved.

The power connector 133 is configured to be able to extract power from the solar panel 121b and the storage battery 132 by connecting the connectors. This makes it easier to secure a power supply in the cultivation facility 1, thereby improving the convenience of the cultivation facility 1. In addition, since the number of power cables to be installed in the cultivation facility 1 can be reduced, troubles due to failure of the power cables can be prevented, and costs can be reduced.

The unit communication section 134 is a unit capable of transmitting measurement information of the illuminance measurement section 131 to the environment control section 13 . Thereby, the environment control unit 13 can acquire the actual illuminance in the cultivation facility 1 from the measured value of the illuminance measurement unit 131 .

An operation example of the louver device 11 will be described below by taking the upper louver device 11A as an example. Since the basic configuration and operation of the side louver device 11B are the same as those of the top louver device 11A, description thereof will be omitted.

5 to 7 are explanatory diagrams for explaining an operation example of the louver device 11. FIG.

In FIGS. 5 to 7, the southal direction of the sun is S, the direction in which the light shielding surface of each louver 121 faces is the normal direction n, and the angle formed by the normal direction n with respect to the southal direction S is the louver 121. , and the angle of incidence of sunlight is β. In addition, the rotation angle α is expressed as 0 degrees when due south, plus when facing west, and minus when facing east. In the louver device 11 , the louver control device 110 acquires the control signal transmitted from the environment control unit 13 , and the louver control device 110 drives the drive mechanism 112 based on the acquired control signal to rotate each louver 121 . The direction and rotation angle α are configured to be controlled. Here, the environment control unit 13 calculates the direction of the sun based on at least one of the position information, the date and time information, and the astronomical data representing the information on the direction of the sun acquired by the GPS module 20 stored in the storage unit 22, and calculates the direction of the sun. solar radiation information indicating the southal direction S, the direction of incidence of sunlight, and the angle of incidence β.

When maximizing the amount of solar radiation introduced by suppressing the amount of blocked solar radiation and maximizing the amount of solar radiation introduced, the normal direction n is controlled to be perpendicular to the incident direction of sunlight, as shown in FIG. The louver device 11 is controlled such that the rotation angle α of each louver 121 is equal to the incident angle β of sunlight. At this time, the amount of sunlight blocked by each louver 121 is minimized, and the power generation amount of the solar panel 121b is also reduced in accordance with the decrease in the amount of blocked light.

6, each louver 121 is moved from the state shown in FIG. The louver device 11 is controlled to incline at an angle θ. At this time, the rotation angle α of each louver 121 is the sunlight incident angle β−θ. Also, the illuminance reduction control by the environment control unit 13, which will be described later, controls the louver device 11 by determining the rotation direction and rotation angle of the plurality of louvers 121 so as to increase the angle θ from the current state by a predetermined amount, for example, 10 degrees. point to That is, the louver device 11 rotates the plurality of louvers 121 by a predetermined angle so that the light shielding surfaces of the plurality of louvers 121 face the directions opposite to the direction of incidence of sunlight, thereby adjusting the amount of light shielded by the plurality of louvers 121. controlled to increase. As a result, the amount of solar radiation introduced can be reduced by a predetermined amount, and the indoor illuminance can be reduced. In contrast to the illumination decrease control, the illumination increase control controls the louver device 11 by determining the rotation directions and rotation angles of the plurality of louvers 121 so as to decrease the angle θ from the current state by a predetermined amount, for example, 10 degrees. point to That is, the louver device 11 rotates the plurality of louvers 121 by a predetermined angle so that the light shielding surfaces of the plurality of louvers 121 face in a direction parallel to the incident direction of sunlight, thereby reducing the amount of light shielded by the plurality of louvers 121. controlled to As a result, the amount of solar radiation introduced can be increased by a predetermined amount, and the indoor illuminance can be increased.

In the case of increasing the amount of shielding of solar radiation, blocking the maximum amount of sunlight, and minimizing the amount of sunlight introduction, as shown in FIG. The louver device 11 is controlled as follows. At this time, the rotation angle α of each louver 121 is −β with respect to the incident angle β of sunlight. At this time, the amount of sunlight blocked by each louver 121 is maximized, and the power generation amount of the solar panel 121b also increases in accordance with the increase in the amount of blocked sunlight.

Next, illuminance adjustment control by the environment control unit 13 will be described with reference to FIGS. 8 and 9. FIG. Here, illuminance adjustment control is control for adjusting indoor illuminance, and means control for executing illuminance increase control and illuminance decrease control according to the indoor environment. FIG. 8 is an explanatory diagram for explaining the relationship between the reference illuminance and the actual illuminance. _The reference illuminance is information indicating in chronological order the reference value of the illuminance desired for the growth of the plant to be cultivated, and is indicated by the solid line C1 in FIG. The user can set an arbitrary value for this reference illuminance using the setting unit 21, and this is stored in the storage unit 22 as reference illuminance information. Here, since the optimum reference illuminance differs depending on the type of plant to be cultivated, the reference illuminance information is configured so that the user can flexibly set the value according to the type of plant. . The actual illuminance indicated by the solid line _C2 in FIG. 8 is information indicating the indoor illuminance measured by the environment measuring unit 14 or the illuminance measuring unit 131 .

FIG. 9 is a flowchart of illuminance adjustment control by the environment control unit 13. As shown in FIG. This illuminance adjustment control is executed at predetermined time intervals to adjust the illuminance in the cultivation facility 1 . First, the environment control unit 13 acquires reference illuminance information from the storage unit 22 (step S1). For example, in the case of FIG. 8, the reference illuminance at around 12:00 is approximately 1000 W/m ² . Next, the information of the actual illuminance including the measured value obtained from the environment measuring unit 14 or the illuminance measuring unit 131 is obtained (step S2). Here, in the case of FIG. 8, the actual illuminance at around 12:00 is about 800 W/m ² .

Next, the environment control unit 13 acquires solar radiation information indicating the sun's central direction S, the incident direction of sunlight, and the incident angle β (step S3). Next, the environment control unit 13 acquires information on the rotation angle α of each louver 121 (step S4).

Subsequently, the environment control unit 13 compares the values of the reference illuminance and the actual illuminance, and if the value of the reference illuminance is greater than the value of the actual illuminance, determines that the illuminance is insufficient, and executes illuminance increase control. and increase the amount of solar radiation introduced, and increase indoor illuminance. If the reference illuminance value is equal to or less than the actual illuminance value, it is determined that the illuminance is excessive, so illuminance reduction control is executed to reduce the amount of solar radiation introduced, thereby reducing the indoor illuminance. For example, in the case of FIG. 8, since the reference illuminance is higher than the actual illuminance during the time period from 6:00 to 14:00, the illuminance increase control is executed. During the time period from 14:00 to 19:00, the reference illuminance is equal to or less than the actual illuminance, so illuminance reduction control is executed. In this way, the cultivation facility 1 is configured so that the amount of incoming solar radiation can be adjusted in response to changes in the angle of incidence of sunlight during the day, and as a result, the amount of incoming solar radiation can be precisely adjusted. As a result, the indoor illuminance can be adjusted even more precisely.

The present invention is not limited to the above embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

In the flowchart of FIG. 9, the environment control unit 13 is configured to perform illuminance increase control or illuminance decrease control by comparing the values of the reference illuminance and the actual illuminance. Then, the illuminance increase control or the illuminance decrease control may be executed by comparing the reference integrated illuminance value and the actual integrated illuminance value at a predetermined time. That is, when the value of the reference integrated illuminance at the predetermined time is greater than the actual integrated illuminance, the illuminance decrease control is executed, and vice versa, the illuminance increase control is performed. As a result, it is possible to control the integrated illuminance to be suitable for the cultivated plants, and to manage the illuminance with a predetermined time interval such as one day. In addition, the environment control unit 13 compares the value of the reference integrated illuminance with the value of the actual integrated illuminance at sunset, and if the actual integrated illuminance is less than the reference integrated illuminance, the supplementary light lamp 17 is turned off for a predetermined period of time. You may make it irradiate and compensate for the lack of sunlight. As a result, it is possible to favorably eliminate the shortage of sunlight and promote the growth of plants while saving energy in the cultivation facility 1 .

Further, in the flowchart of FIG. 9, the illuminance is referred to, but the temperature and humidity may be referred to. For example, if the temperature measured at a predetermined time exceeds a preset reference temperature, the illuminance reduction control is executed, and if the temperature is below the reference temperature, the illuminance reduction control is executed so that the leaves of cultivated plants It keeps the temperature suitable and promotes the growth. In this case, by performing illumination reduction control and blowing air to the undersides of the leaves of the plant by driving control of the blower fan 18, the leaf temperature of the cultivated plant can be lowered more preferably, and the stress on the plant can be suppressed.

In addition, in the flowchart of FIG. 9, the environment control unit 13 is configured to perform illuminance increase control or illuminance decrease control. may be controlled to be sprayed on cultivated plants. For example, when the actual illuminance is equal to or higher than a predetermined value, it is considered that the photosynthesis of the cultivated plants is activated. may be configured. Thereby, the photosynthesis of cultivated plants is promoted, and the growth is promoted.

FIG. 10 is an internal configuration diagram of a cultivation facility showing another arrangement example of the louver device 11 of FIG. In FIG. 1, the louver device 11 is configured to be supported by the branch pipe 15, but it is not essential to be supported by the branch pipe 15, and it may be configured to be supported by a predetermined support member. Moreover, as shown in FIG. 10, the upper surface louver device 11A may also be arranged with an inclination along the inclination of the roof portion of the cultivation facility 1 . Thereby, the light receiving area of sunlight can be increased, and the power generation amount of the solar panel 121b can be increased.

In addition, the environment control unit 13 calculates the direction of the sun based on at least one of the position information, date and time information, and astronomical data indicating the direction of the sun acquired by the GPS module 20 stored in the storage unit 22, and calculates the direction of the sun. A plurality of photosensors are arranged at predetermined positions in the cultivation facility 1, and the signal output difference of each sensor is compared. By doing so, the solar radiation information indicating the incident direction and incident angle β of the sunlight may be calculated.

1 cultivation facility 11 louver device 12 gas supply device 13 environment control unit 14 environment measurement unit 15 branch pipe 16 gas supply pipe 17 supplementary lamp 18 ventilation fan 19 skylight 20 GPS module 21 setting unit 22 storage unit 110 louver control device 111 louver control unit 112 drive mechanism 113 power supply 114 louver communication unit 120 louver unit 121 louver 121a light shielding unit 121b solar panel 130 unit unit 131 illuminance measurement unit 132 storage battery 133 power connector 134 unit communication unit NW communication network

Claims (1)

a plurality of louvers arranged parallel to each other on the same plane at regular intervals and configured to be rotatable in synchronization ; louver devices respectively arranged above and on the sides so as to surround the plants in the cultivation facility ;
illuminance measuring means for measuring actual illuminance in the cultivation facility;
an environment control unit configured to be able to control the louver device;
said illuminance measuring means comprises a plurality of illuminance sensors arranged for each of said plurality of louvers on the indoor side of the cultivation facility in close proximity to said plurality of louvers;
The environment control unit obtains information on the actual illuminance measured by the plurality of illuminance sensors , calculates an average value of the actual illuminance, and based on the calculated average value of the actual illuminance, determines the rotation direction and direction of the plurality of louvers. configured to control the angle of rotation;
A means for obtaining information on the incident direction and angle of sunlight is provided, the reference illuminance information stored in the storage unit is obtained, and the set value of the reference illuminance included in the reference illuminance information is the average value of the calculated actual illuminance. , the plurality of louvers are rotated by a predetermined angle so that the light shielding surfaces of the plurality of louvers are directed in a direction parallel to the incident direction of sunlight to reduce the amount of light shielded by the plurality of louvers, and the reference When the set value of the illuminance is lower than the calculated average value of the actual illuminance, the plurality of louvers are rotated by a predetermined angle so that the light shielding surfaces of the plurality of louvers face the direction opposite to the incident direction of sunlight, A cultivation facility characterized by controlling the louver device so as to increase the amount of light shielded by the plurality of louvers .

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