Control system

Abstract

To adjust an environment of a plurality of closed spaces where crop plans are cultivated to an environment according to the type of crop plants by electric power generated by photovoltaic power generation.SOLUTION: A control system 100 supplies electric power by photovoltaic power generation to environment adjusting instruments provided in a plurality of closed spaces where crop plans are cultivated, and the environment adjusting instruments adjust environment in the closed space. The cultivation temperature of crop plants cultivated in each closed space is previously set according to the type of the crop plants, and the temperature is different between at least two closed spaces. The control system 100 comprises a temperature acquisition part 210b, a comparison part 210c, and a power feeding control part 210e, where the temperature acquisition part 210b acquires the internal temperature of each closed space, and the comparison part 210c compares the internal temperature and the cultivation temperature. The power feeding control part 210e feeds electric power generated by sunlight to the environment adjusting instrument provided in a closed space in which a difference between the internal temperature and the cultivation temperature exceeds a predetermined value, out of the plurality of closed spaces.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a control system. [Background technology]

[0002] It has been known that the heat received by and the electricity generated by solar cells are used for air conditioning, ventilation, watering, lighting, etc. as needed, and the energy source required for plant cultivation in a plant greenhouse is provided by solar heat and electricity generated by solar cells (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-322661 Summary of the Invention [Problem to be solved by the invention]

[0004] When multiple types of crops are cultivated in a greenhouse, the cultivation temperature may differ for each crop. In this case, each of the multiple types of crops is cultivated in multiple greenhouses with different internal temperatures. When electricity generated by solar power is used to regulate the environment of these multiple greenhouses, the generated electricity decreases when the amount of sunlight decreases, and it may become impossible to maintain the environment of each of the multiple greenhouses according to the crop.

[0005] However, the technology described in Patent Document 1 does not assume that the environment of each greenhouse will be adjusted according to the crop when the internal temperatures of multiple greenhouses differ according to the cultivation temperature of the crop. Therefore, when trying to adjust the environment of multiple greenhouses according to the crop, it is not possible to distribute the power generated by solar power generation, making it difficult to maintain the environment of each greenhouse optimally.

[0006] In view of the above problems, an object of the present disclosure is to provide a control system that is capable of adjusting the environment of each closed space in multiple closed spaces where crops are grown to an environment that corresponds to the type of crop using electricity generated by solar power. [Means for solving the problem]

[0007] The gist of the present disclosure is as follows.

[0008] (1) A control system supplies solar power to an environmental adjustment device. The environmental adjustment device is provided in each of a plurality of closed spaces. Crops are cultivated in the plurality of closed spaces. The environmental adjustment device adjusts the environment in the closed space. A cultivation temperature of the crop cultivated in each of the closed spaces is determined in advance according to the variety of the crop cultivated in each of the closed spaces. The cultivation temperature differs between at least two of the closed spaces. The control system includes a temperature acquisition unit, a comparison unit, and a power supply control unit. The temperature acquisition unit acquires an internal temperature of each of the closed spaces. The comparison unit compares the internal temperature with the cultivation temperature for each of the closed spaces. The power supply control unit supplies solar power generated to the environmental adjustment device provided in a closed space in which the deviation between the internal temperature and the cultivation temperature exceeds a predetermined value among the plurality of closed spaces.

[0009] (2) In the control system described above in (1), the cultivation temperature is determined in advance depending on the variety and cultivation season of the crop cultivated in each of the closed spaces.

[0010] (3) The control system according to (1) above includes a power demand determination unit. The power demand determination unit determines the power demand of a refrigeration equipment. The refrigeration equipment is supplied with power generated by solar power by the control system. When there is no closed space in which the deviation between the internal temperature and the cultivation temperature exceeds a predetermined value, the power supply control unit supplies power generated by solar power to the refrigeration equipment when it is determined that the refrigeration equipment has a power demand in the absence of such a closed space.

[0011] (4) In (3) above, when it is determined that there is no closed space in which the deviation between the internal temperature and the cultivation temperature exceeds a predetermined value and that there is no demand for electricity in the refrigeration equipment, the power supply control unit supplies electricity generated by solar power to the storage battery.

[0012] (5) In the above (1), an equipment control unit is further provided. The environmental adjustment device is a temperature adjustment device that adjusts the temperature inside the closed space. The equipment control unit controls the temperature adjustment device. For a closed space among the multiple closed spaces in which a value obtained by subtracting the cultivation temperature from the internal temperature is a positive value, the equipment control unit controls the temperature adjustment device provided in the closed space to cool the inside of the closed space. For a closed space among the multiple closed spaces in which a value obtained by subtracting the cultivation temperature from the internal temperature is a negative value, the equipment control unit controls the temperature adjustment device provided in the closed space to heat the inside of the closed space.

[0013] (6) In the above (1), the temperature acquisition unit predicts the internal temperature. The temperature acquisition unit acquires the predicted internal temperature.

[0014] (7) In the above (1), a sensor is further provided in each of the closed spaces. The sensor detects an environmental condition inside and outside the closed spaces. The control system further includes an equipment control unit. The equipment control unit controls the environmental adjustment equipment. The equipment control unit controls the environmental adjustment equipment based on at least one of meteorological information and the environmental condition detected by the sensor.

[0015] (8) The control system according to (7) above further includes a learning unit. The learning unit creates a learned model. The learned model is a model that has been machine-learned to learn a relationship between at least one of the weather information and the environmental state detected by the sensor and a control amount of the environmental adjustment device. The device control unit controls the environmental adjustment device based on the control amount. The control amount is output from the learned model when at least one of the weather information and the environmental state detected by the sensor is input to the learned model.

[0016] (9) In the above (7), the environmental adjustment device includes at least one of a temperature adjustment device, a pump, a light-shielding curtain, a lighting device, and a ventilation window. The temperature adjustment device adjusts the temperature inside the closed space. The pump supplies water to the crops in the closed space. The light-shielding curtain blocks sunlight from entering the closed space. The lighting device is a lighting device for growing crops provided in the closed space. The ventilation window takes in outside air into the closed space. Effect of the Invention

[0017] According to the present disclosure, in multiple closed spaces in which crops are grown, it is possible to adjust the environment of each closed space to an environment appropriate for the type of crop using electricity generated by solar power. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram showing an example of the configuration of a fully self-consumption on-site PPA. [Diagram 2] FIG. 1 is a schematic diagram showing a configuration of a control system according to an embodiment. [Diagram 3] FIG. 1 is a diagram showing cultivation temperatures according to varieties of high-temperature tolerant vegetables. [Figure 4] FIG. 1 is a diagram showing cultivation temperatures according to varieties of mesophilic vegetables. [Diagram 5] FIG. 1 is a diagram showing cultivation temperatures according to varieties of cool climate vegetables. [Figure 6] FIG. 2 is a schematic diagram showing the configuration of a control device and its surroundings. [Figure 7] FIG. 2 is a functional block diagram of a processor. [Figure 8] 4 is a flowchart showing a process performed by a processor of the control device. [Figure 9] 4 is a flowchart showing a process performed by a processor of the control device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, some embodiments according to the present disclosure will be described with reference to the drawings. However, these descriptions are intended to merely exemplify preferred embodiments of the present disclosure, and are not intended to limit the present disclosure to such specific embodiments. In the following description, similar components are given the same reference numerals, and duplicate descriptions will be omitted as appropriate.

[0020] As an example, the solar power generation control system 100 according to the present embodiment includes a solar panel 102 and a storage battery 124, and is used in the form of a completely self-consumption on-site PPA. In the on-site PPA, as shown in FIG. 1, a power generation company 300 installs the control system 100 on the premises of a consumer 350, and supplies power generated by the control system 100 to the consumer 350 on-site. The power generation company 300 and the consumer 350 enter into a power purchase agreement, i.e., a PPA. Based on the PPA, the power generation company 300 installs the control system 100, and also owns and manages the control system 100. Based on the PPA, the consumer 350 pays a power fee to the power generation company 300.

[0021] In the case of a completely self-consumption type, all of the power generated by the control system 100 is self-consumed within the premises of the consumer 350. Therefore, the power generated by the control system 100 is supplied only to facilities within the premises of the consumer 350, and the power is not supplied to the power transmission network, power distribution network, etc. of other power systems.

[0022] When the amount of power generated by the control system 100 is surplus to the amount of power required by the consumer 350, the surplus is stored in the storage battery 124. When the amount of power generated by the control system 100 is insufficient for the amount of power required by the consumer 350, the shortfall is made up for by the power stored in the storage battery 124. In addition, the shortfall may be made up for by the consumer 350 purchasing power from an existing power company 400.

[0023] 2, the control system 100 includes, for example, a solar panel 102, a connection box 104, a DC / AC high-frequency inverter 106, a high-frequency transformer 108, a ground fault circuit interrupter 110, a first power supply switch 112, a second power supply switch 114, a third power supply switch 116, an AC / DC converter 118, a storage battery power supply switch 120, a DC / DC converter 122, a storage battery 124, and a control device 200. The control system 100 may further include a first temperature adjustment device 500 provided in a first power consumption area A, a second temperature adjustment device 510 provided in a second power consumption area B, and a refrigeration device 520 provided in a third power consumption area C. The first temperature adjustment device 500 and the second temperature adjustment device 510 are aspects of an environmental adjustment device to be described later. Also, in FIG. 2, the dashed arrows extending from the control device 200 to the first power supply switch 112, the second power supply switch 114, the third power supply switch 116, and the battery power supply switch 120 indicate signal lines through which control signals for driving these switches are transmitted.

[0024] The solar panel 102 receives sunlight and generates electricity. The solar panel 102 is composed of, for example, a plurality of solar cell modules, and each solar cell module is composed of a plurality of solar cell cells. The solar cell is irradiated with sunlight and converts the solar energy into electric power. The junction box 104, for example, combines output cables that extract DC output generated by each solar cell module into a single cable.

[0025] The DC / AC high frequency inverter 106 converts the power generated by the solar panel 102 from direct current to alternating current. The high frequency transformer 108 transforms the alternating current converted by the DC / AC high frequency inverter 106 to a desired voltage. The earth leakage breaker 110 cuts off the current when the current of the alternating current becomes excessive. The first power supply switch 112 is composed of an electromagnetic switch and is a switch for supplying the power generated by the solar panel 102 to the first temperature adjustment device 500 in the first consumption area A. The second power supply switch 114 is composed of an electromagnetic switch and is a switch for supplying the power generated by the solar panel 102 to the second temperature adjustment device 510 in the second consumption area B. The third power supply switch 116 is composed of an electromagnetic switch and is a switch for supplying the power generated by the solar panel 102 to the refrigeration device 520 in the third consumption area C. When the first power supply switch 112 is turned on, power is supplied to the first temperature adjustment device 500. Similarly, when the second power supply switch 114 is turned on, power is supplied to the second temperature adjustment device 510. Similarly, when the third power supply switch 116 is turned on, power is supplied to the refrigeration device 520. On the other hand, when the first power supply switch 112 is turned off, power supply to the first temperature adjustment device 500 is stopped. Similarly, when the second power supply switch 114 is turned off, power supply to the second temperature adjustment device 510 is stopped. Similarly, when the third power supply switch 116 is turned off, power supply to the refrigeration device 520 is stopped.

[0026] The AC / DC converter 118 converts the AC transformed by the high-frequency transformer 108 into a DC. The battery power supply switch 120 is an electromagnetic switch, and is a switch for supplying surplus power to the battery 124 as necessary. When the battery power supply switch 120 is turned on, power is supplied to the battery 124. On the other hand, when the battery power supply switch 120 is turned off, power supply to the battery 124 is stopped. The DC / DC converter 122 converts the voltage of the DC converted by the AC / DC converter 118 to store it in the battery 124. When the battery power supply switch 120 is on, the battery 124 stores the surplus power generated by the solar panel 102. The control system 100 according to this embodiment is a completely self-consumption type, and stores all the surplus power generated by the solar panel 102 in the battery 124, and does not sell the power to the power company 400.

[0027] A first greenhouse 502 for agricultural use is installed in a first electricity consuming area A. Similarly, a second greenhouse 504 for agricultural use is installed in a second electricity consuming area B. A first temperature adjusting device 500 is provided inside the first greenhouse 502 in the first electricity consuming area A and adjusts the temperature inside the first greenhouse 502. A second temperature adjusting device 510 is provided inside the second greenhouse 504 in the second electricity consuming area B and adjusts the temperature inside the second greenhouse 504. The control system 100 supplies solar power to the first greenhouse 502 and the second greenhouse 504. In the following, the first greenhouse 502 and the second greenhouse 504 are also referred to as closed spaces.

[0028] Different kinds of crops are cultivated in each of the multiple closed spaces. The cultivation temperature of the crops cultivated in each of the multiple closed spaces is determined in advance according to the variety of the crop cultivated in each of the multiple closed spaces. The cultivation temperature of the crops cultivated in each of the multiple closed spaces is different between at least two closed spaces. A crop a is cultivated in a first greenhouse 502 in a first consumer area A. A crop b is cultivated in a second greenhouse 504 in a second consumer area B. The cultivation temperatures of the crops a and b are different. For this reason, the internal temperature of the first greenhouse 502 in the first consumer area A and the internal temperature of the second greenhouse 504 in the second consumer area B are set to different temperatures. Note that, in this embodiment, a case where there are two closed spaces, i.e., two greenhouses, is illustrated, but for example, when there are three or more closed spaces, the cultivation temperature of the crop cultivated in the first closed space and the cultivation temperature of the crop cultivated in the second closed space may be the same. The cultivation temperature of the crops cultivated in the third closed space may be different from the cultivation temperatures of the crops cultivated in the first closed space and the second closed space.

[0029] Cultivation temperatures according to varieties of high-temperature vegetables, i.e., optimum germination temperatures and optimum growth temperatures, are shown in Fig. 3. Cultivation temperatures according to varieties of mesophilic vegetables, i.e., optimum germination temperatures and optimum growth temperatures, are shown in Fig. 4. Cultivation temperatures according to varieties of cool-temperature vegetables, i.e., optimum germination temperatures and optimum growth temperatures, are shown in Fig. 5. The cultivation temperatures may be predetermined according to the variety and cultivation season of the crop, as shown in Figs. 3 to 5.

[0030] A refrigeration device 520 is installed in a third electricity consuming area C. The refrigeration device 520 stores, for example, a crop a cultivated in a first greenhouse 502 in a first electricity consuming area A, a crop b cultivated in a second greenhouse 504 in a second electricity consuming area B, or processed foods.

[0031] The internal temperatures of the first greenhouse 502 in the first consumer area A and the second greenhouse 504 in the second consumer area B are affected by weather conditions including solar radiation and outside temperature. If the internal temperatures of the first greenhouse 502 and the second greenhouse 504 deviate from the respective cultivation temperatures of the crops a and b, the growth of the crops a and b will be hindered, and the desired quality of these crops will not be obtained.

[0032] In this embodiment, the temperature adjustments in the first greenhouse 502 and the second greenhouse 504 by the first temperature adjustment device 500 and the second temperature adjustment device 510 are performed by the power generated by the solar panel 102. In a closed space among a plurality of closed spaces, i.e., greenhouses, in which the deviation between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value, power generated by sunlight is supplied to the environmental adjustment devices provided in the closed space, i.e., the first temperature adjustment device 500 and the second temperature adjustment device 510. Specifically, when the internal temperature T of the first greenhouse 502 is higher than the cultivation temperature Tp of the crop a, if the value obtained by subtracting the cultivation temperature Tp of the crop a from the internal temperature T of the first greenhouse 502 exceeds a first predetermined value TH1, the power generated by the solar panel 102 is supplied to the first temperature adjustment device 500 of the first greenhouse 502. Furthermore, when the cultivation temperature Tp of the crop a is higher than the internal temperature T of the first greenhouse 502, if the value obtained by subtracting the internal temperature T of the first greenhouse 502 from the cultivation temperature Tp of the crop a exceeds a second predetermined value TH2, the power generated by the solar panel 102 is supplied to the first temperature adjustment device 500 of the first greenhouse 502. Alternatively, if the absolute value of the difference between the internal temperature T of the first greenhouse 502 and the cultivation temperature Tp of the crop a exceeds a third predetermined value TH3, the power generated by the solar panel 102 is supplied to the first temperature adjustment device 500 of the first greenhouse 502. As a result, the first temperature adjustment device 500 to which power is supplied adjusts the temperature of the first greenhouse 502 using the power generated by the solar panel 102, and the internal temperature T of the first greenhouse 502 is maintained at the cultivation temperature of the crop a.

[0033] Similarly, when the internal temperature T of the second greenhouse 504 is higher than the cultivation temperature Tp of the crop b, if the value obtained by subtracting the cultivation temperature Tp of the crop b from the internal temperature T of the second greenhouse 504 exceeds a first predetermined value TH1, the power generated by the solar panel 102 is supplied to the second temperature adjustment device 510 of the second greenhouse 504. Also, when the cultivation temperature Tp of the crop b is higher than the internal temperature T of the second greenhouse 504, if the value obtained by subtracting the internal temperature T of the second greenhouse 504 from the cultivation temperature Tp of the crop b exceeds a second predetermined value TH2, the power generated by the solar panel 102 is supplied to the second temperature adjustment device 510 of the second greenhouse 504. Alternatively, when the absolute value of the difference between the internal temperature T of the second greenhouse 504 and the cultivation temperature Tp of the crop b exceeds the third predetermined value TH3, the power generated by the solar panel 102 is supplied to the second temperature adjustment device 510 of the second greenhouse 504. As a result, the second temperature adjustment device 510 to which power is supplied adjusts the temperature of the second greenhouse 504 using the power generated by the solar panel 102, and the internal temperature T of the second greenhouse 504 is maintained at the cultivation temperature of the crop b. For example, in the early morning when the temperature is low, the first temperature adjustment device 500 and the second temperature adjustment device 510 heat the first greenhouse 502 and the second greenhouse 504. Also, when the temperature rises during the day and the temperature inside the first greenhouse 502 and the second greenhouse 504 becomes high, the first temperature adjustment device 500 and the second temperature adjustment device 510 cool the first greenhouse 502 and the second greenhouse 504.

[0034] The magnitude relationship between the first predetermined value TH1 and the second predetermined value TH2 is preferably set according to the cultivation conditions of the crop. For example, in strawberry cultivation, air conditioning is used in the summer, and the main purpose is to promote flower bud differentiation and fruit enlargement by cooling the crown, i.e., the stem. In order to achieve this purpose, it is important not to make the crown exceed a predetermined temperature. For this reason, by setting the first predetermined value TH1 to a sufficiently small value, it is strictly determined that the internal temperature T is higher than the cultivation temperature Tp. As a result, when the internal temperature T is higher than the cultivation temperature Tp, power supply is promoted, and this purpose is reliably achieved. On the other hand, when the cultivation temperature Tp is higher than the internal temperature T, that is, when the internal temperature T is equal to or lower than the cultivation temperature Tp, this purpose is sufficiently achieved. For this reason, the second predetermined value TH2 may be set to a value larger than the first predetermined value TH1, and the determination of whether or not to supply power when the internal temperature T is equal to or lower than the cultivation temperature Tp may be loosened. This makes it possible to suppress power supply from the solar panel 102, particularly when the internal temperature T is equal to or lower than the cultivation temperature Tp, thereby reducing the operating frequency of the temperature adjustment device, and also achieves the above-mentioned objective when cultivating strawberries in the summer.

[0035] On the other hand, in strawberry cultivation, heating is used in winter, but it is important that strawberries do not freeze when heating in winter. For this reason, by setting the second predetermined value TH2 small, it is strictly determined that the cultivation temperature Tp is higher than the internal temperature T, that is, the internal temperature T is equal to or lower than the cultivation temperature Tp. As a result, when the internal temperature T is equal to or lower than the cultivation temperature Tp, power supply is promoted, and this objective is certainly achieved. On the other hand, when the internal temperature T is higher than the cultivation temperature Tp, this objective is sufficiently achieved. For this reason, the first predetermined value TH1 may be set larger than the second predetermined value TH2, and the determination of whether or not to supply power when the internal temperature T is higher than the cultivation temperature Tp may be relaxed. As a result, particularly when the internal temperature T is higher than the cultivation temperature Tp, the power supply from the solar panel 102 can be suppressed, the operating frequency of the temperature adjustment device can be reduced, and the above-mentioned objective when cultivating strawberries in winter can also be achieved.

[0036] As a result, the electricity generated by sunlight is consumed only in the greenhouses in which the internal temperature T and the cultivation temperature Tp are different from each other among the multiple greenhouses, so that the electricity generated by sunlight is prevented from being wasted. Therefore, the electricity generated by sunlight is optimally distributed to the multiple greenhouses. In addition, for example, when tomatoes are cultivated in the first greenhouse 502 and strawberries are cultivated in the second greenhouse 504, the first greenhouse 502 in which the tomatoes are cultivated is heated in winter using electricity generated by sunlight, so that tomatoes can be harvested all year round. On the other hand, in the second greenhouse 504 in which strawberries are cultivated, when daytime cooling in spring and daytime and nighttime cooling in summer are performed using electricity generated by sunlight, strawberries are harvested over a long period from spring to summer.

[0037] In addition, the demand for solar power generation is smoothed throughout the year by the following method. Here, an example will be described in which tomatoes are grown in the first greenhouse 502 and strawberries are grown in the second greenhouse 504. First, the average temperature in early April is about 13°C. In contrast, the optimum temperature for tomatoes, which germinate at the same time, is 20 to 27°C as a cultivation temperature, as shown in FIG. 4. For this reason, the first greenhouse 502 in which tomatoes are grown requires relatively strong heating. On the other hand, the optimum temperature for strawberries at the same time is 17 to 20°C as shown in FIG. 5, so the second greenhouse 504 requires relatively weak heating.

[0038] Furthermore, the average temperature in mid-June is about 27°C. Since strawberries are sprouting at this time, the optimum temperature for germination is 18 to 22°C, as shown in FIG. 5. For this reason, the second greenhouse 504 requires strong daytime cooling. On the other hand, the first greenhouse 502 in which tomatoes are grown requires weak cooling, since the optimum temperature for tomato growth is 21 to 26°C. Furthermore, in mid-August the average temperature is about 32°C, but the tomato harvest is over and only strong nighttime cooling is required for the strawberries.

[0039] As described above, in the first greenhouse 502 and the second greenhouse 504 to which the solar power is supplied, a combination of multiple crops with different cultivation seasons are cultivated, so that the power demand can be smoothed throughout the year. Therefore, it becomes easy to control the distribution of the solar power to each of the first greenhouse 502 and the second greenhouse 504 throughout the year. This prevents the solar power from becoming insufficient. In addition, it prevents the solar power from becoming excessively surplus. If a surplus of power occurs as a result of the leveling, the surplus power is stored in the storage battery 124.

[0040] In addition, the internal temperature of refrigeration appliance 520 in third consumption area C may also be affected by weather conditions including the outside temperature. When refrigeration appliance 520 in third consumption area C has a demand for solar-generated electricity, the electricity generated by solar panel 102 is supplied to refrigeration appliance 520. This suppresses a decrease in the cooling capacity of refrigeration appliance 520.

[0041] In addition, if there is no greenhouse in which the difference between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value and there is no demand for electricity in the refrigeration equipment 520, the electricity generated by sunlight is stored in the storage battery 124.

[0042] The power supply to the first temperature adjustment device 500, the second temperature adjustment device 510, and the refrigeration device 520 by the control system 100 is performed by self-consignment. That is, the control system 100 and the first temperature adjustment device 500, the second temperature adjustment device 510, and the refrigeration device 520 in the first consumption area A, the second consumption area B, and the third consumption area C are connected via a power transmission and distribution network maintained and operated by the power generation company 300. The first consumption area A, the second consumption area B, and the third consumption area C may be located within a predetermined distance. For example, when the first consumption area A, the second consumption area B, and the third consumption area C are on the premises of a consumer 350 who engages in agriculture, the first consumption area A, the second consumption area B, and the third consumption area C may be located within a 1 km diameter range.

[0043] 6, the control device 200 includes a processor 210, a memory 212, and a communication interface 214. The processor 210 includes one or more central processing units (CPUs) and their peripheral circuits. The processor 210 may further include other arithmetic circuits such as a logic arithmetic unit, a numerical arithmetic unit, or a graphic processing unit.

[0044] The memory 212 includes, for example, a readable and writable semiconductor memory, i.e., a random access memory (RAM), a read-only semiconductor memory, i.e., a read-only memory (ROM), and a non-volatile memory. Furthermore, the memory 212 may be a storage medium such as a semiconductor memory card, a hard disk, or an optical storage medium. The memory 212 stores the cultivation temperatures TP of the crops a and b.

[0045] 6, and has an interface circuit for connecting the control device 200 to the first power supply switch 112, the second power supply switch 114, the third power supply switch 116, and the battery power supply switch 120. The communication interface 214 also has an interface circuit for connecting the control device 200 to an external communication network 220 such as the Internet.

[0046] The control device 200 is connected to an external server 230 via a communication network 220. The server 230 transmits various information such as weather information to the control device 200 via the communication network 220. The control device 200 is also connected to sensors 600 installed in a first consumption area A, a second consumption area B, and a third consumption area C via the communication network 220. The control device 200 is also connected to environmental adjustment devices 700 installed in the first consumption area A, the second consumption area B, and the third consumption area C via the communication network 220. The control device 200 is further connected to a user's terminal device 800 via the communication network 220. As described above, the control device 200 is connected to the first power supply switch 112, the second power supply switch 114, the third power supply switch 116, and the storage battery power supply switch 120 by signal lines. On the other hand, the control device 200, the first power supply switch 112, the second power supply switch 114, the third power supply switch 116, and the battery power supply switch 120 may be connected via a communication network 220. The control system 100 may include a server 230, a sensor 600, an environmental adjustment device 700, and a terminal device 800.

[0047] The sensor 600 is a sensor that detects the environmental conditions in the first consumption area A, the second consumption area B, and the third consumption area C. In the first consumption area A and the second consumption area B, the sensor 600 detects the environmental conditions inside and outside the closed space, i.e., the greenhouse. Specifically, the sensor 600 includes a temperature sensor that detects the internal temperature T of the first greenhouse 502, and a sensor that detects the internal temperature T of the second greenhouse 504. In each of the first greenhouse 502 and the second greenhouse 504, the sensor 600 also includes an imaging sensor that captures an image of the inside or outside of the greenhouse, a sensor that detects the soil temperature inside the greenhouse, an outside air temperature sensor that detects the outside air temperature, and a humidity sensor that detects the humidity inside or outside the greenhouse. Furthermore, the sensor 600 may include, in each of the first greenhouse 502 and the second greenhouse 504, a solar radiation sensor that detects the amount of solar radiation, a sensor that detects the brightness of lighting equipment for growing crops installed inside, a sensor that detects the amount of water supplied by a pump that supplies water to the crops, a sensor that detects the shading rate of the shading curtains stretched across the ceiling of the greenhouse, a sensor that detects the opening degree of the ventilation window that introduces outside air into the greenhouse, a sensor that detects the amount of moisture in the soil, and a sensor that detects the fertilizer content in the soil.

[0048] The environmental adjustment device 700 adjusts the environment in the closed space, that is, the inside of the first greenhouse 502 and the second greenhouse 504. The environmental adjustment device 700 includes a first temperature adjustment device 500 and a second temperature adjustment device 510. The environmental adjustment device 700 also includes other devices provided in the first consumption area A, the second consumption area B, and the third consumption area C. The other devices include the above-mentioned refrigeration device 520, a pump, a shading curtain, a lighting device, and a ventilation window. The shading curtain is configured to be driven by, for example, a motor, and to be able to change the area covering the ceiling of the greenhouse, that is, the shading rate. The ventilation window is also configured to be driven by, for example, a motor, and to be able to change the opening degree. The environmental adjustment device 700 is controlled based on a control signal transmitted from the control device 200.

[0049] The user's terminal device 800 may be, for example, a personal computer, a mobile phone, a smartphone, or a tablet terminal.

[0050] As shown in Fig. 7, the processor 210 includes an information acquisition unit 210a, a temperature acquisition unit 210b, a comparison unit 210c, a power demand determination unit 210d, a power supply control unit 210e, an equipment control unit 210f, and a learning unit 210g. Each of these units included in the processor 210 is a functional module realized by a computer program that runs on the processor 210, for example. That is, each of these units included in the processor 210 is configured by the processor 210 and a program for making the processor 210 function, that is, software. The program may be recorded in the memory 212 included in the control device 200 or a recording medium connected from the outside. Alternatively, each of these units included in the processor 210 may be a dedicated arithmetic circuit provided in the processor 210.

[0051] The information acquisition unit 210a acquires the cultivation temperature Tp of the crop a and the crop b stored in the memory 212. The information acquisition unit 210a also acquires weather information transmitted from the server 230. The weather information may include a weather forecast. The weather forecast may include a forecast of weather, temperature, wind force, maximum temperature, minimum temperature, solar radiation, amount of sunlight, and frost damage. The information acquisition unit 210a also acquires the environmental state detected by the sensor 600 transmitted from the sensor 600. The information acquisition unit 210a also acquires the actual value of the control amount of the environmental adjustment device 700 transmitted from the environmental adjustment device 700. The information acquisition unit 210a also acquires the refrigeration temperature and the power request transmitted from the refrigeration device 520 of the third consumption area C. The information acquisition unit 210a also acquires various information related to the control system 100, such as the state of charge of the storage battery 124, i.e., SOC: State of Charge.

[0052] The temperature acquisition unit 210b acquires the internal temperatures T of the first greenhouse 502 and the second greenhouse 504. Specifically, the temperature acquisition unit 210b acquires the internal temperatures T of the first greenhouse 502 and the second greenhouse 504 detected by the temperature sensors.

[0053] Furthermore, the temperature acquisition unit 210b may predict the internal temperatures T of the first greenhouse 502 and the second greenhouse 504, and acquire the predicted internal temperatures T. For example, the temperature acquisition unit 210b predicts the internal temperatures T of the first greenhouse 502 and the second greenhouse 504 based on meteorological information acquired by the information acquisition unit 210a from the external server 230.

[0054] The temperature acquisition unit 210b may be configured with a trained model that has been machine-learned to predict the internal temperatures T of the first greenhouse 502 and the second greenhouse 504. In this case, the learning unit 210g may receive, for example, input values ​​x1, x2, x3, x4, and x5 and training data y t A trained model is created from multiple datasets consisting of the training data y t is being calculated, and the output value from the output layer for this input value is y. If the squared error is used as the error function, the squared error E is E=(1 / 2)·(yy t ) 2 It can be calculated as follows.

[0055] The learning unit 210g inputs the input values ​​included in the data set to the neural network, and calculates the output value y obtained by comparing the training data y included in the data set with the training data y t Then, in order to minimize the sum of the squared errors E obtained from a plurality of learning data sets, the learning unit 210g performs calculations such as backpropagation and stochastic gradient descent to calculate the weights w and biases b of each node, thereby creating a trained model. Note that if teacher data cannot be detected, the learning unit 210g may create a trained model by unsupervised learning or reinforcement learning.

[0056] When the learning unit 210g creates a trained model equivalent to the temperature acquisition unit 210b, the input values ​​x1, x2, x3, x4, and x5 are, for example, meteorological information acquired from the server 230. The input values ​​x1, x2, x3, x4, and x5 may include the volume of the greenhouse and a value that quantifies the specifications of the greenhouse. Examples of the specifications of the greenhouse include the location conditions of the greenhouse and the material of the greenhouse. Examples of the location conditions of the greenhouse include altitude, ventilation, and the presence or absence of obstacles that block light in the surrounding area. Examples of the material of the greenhouse include glass and vinyl. Also, the training data y t are the actual values ​​of the internal temperatures T of the first greenhouse 502 and the second greenhouse 504 detected by the temperature sensors. As a result, when the parameters of the weather information, the greenhouse volume, and the greenhouse specifications are input to the created trained model, the internal temperature T of the greenhouse is output from the trained model.

[0057] The comparison unit 210c compares the internal temperature T with the cultivation temperature Tp for each closed space in which the crop is cultivated. Specifically, the comparison unit 210c compares the internal temperature T of the first greenhouse 502 with the cultivation temperature Tp of the crop a cultivated in the first greenhouse 502. The comparison unit 210c also compares the internal temperature T of the second greenhouse 504 with the cultivation temperature Tp of the crop b cultivated in the second greenhouse 504. As described above, the cultivation temperature Tp is stored in the memory 212 of the control device 200. Also, the cultivation temperature Tp may be determined according to the variety and cultivation season of the crop, as shown in Figs. 3 to 5. Therefore, the comparison unit 210c compares the internal temperature T with the cultivation temperature Tp determined according to the variety and cultivation season of the crop for each closed space, which is stored in the memory 212. For example, when tomatoes are grown in the first greenhouse 502 and the current time is the germination period of the tomatoes, the comparison unit 210c compares the internal temperature T of the first greenhouse 502 with the optimum temperature for tomato germination shown in Fig. 4. When tomatoes are grown in the first greenhouse 502 and the current time is the growth period of the tomatoes, the comparison unit 210c compares the internal temperature T of the first greenhouse 502 with the optimum temperature for tomato growth shown in Fig. 4. When there is a certain range of the cultivation temperature, the median value of the range may be set as the cultivation temperature T.

[0058] The power demand determination unit 210d determines the power demand of the refrigeration appliance 520. When the information acquisition unit 210a acquires a power request from the refrigeration appliance 520, the power demand determination unit 210d determines that there is a power demand for the refrigeration appliance 520. Furthermore, when the difference between the outside air temperature of the third consumption area C and the refrigeration temperature of the refrigeration appliance 520 is equal to or greater than a predetermined value, the power demand determination unit 210d determines that there is a power demand for the refrigeration appliance 520. Furthermore, for example, when crops harvested in the first greenhouse 502 and the second greenhouse 504 in the first consumption area A and the second consumption area B are put into the refrigeration appliance 520 and refrigerated, the power demand determination unit 210d may determine whether there is a power demand for the refrigeration appliance 520 based on the amount of crops put into the refrigeration appliance 520, the refrigeration temperature, and the outside air temperature.

[0059] The power supply control unit 210e supplies power generated by sunlight to an environmental adjustment device provided in a closed space among a plurality of closed spaces, i.e., greenhouses, in a closed space where the difference between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value. Specifically, when the internal temperature T of the first greenhouse 502 is higher than the cultivation temperature Tp of the crop a, and the value obtained by subtracting the cultivation temperature Tp of the crop a from the internal temperature T of the first greenhouse 502 exceeds a first predetermined value TH1, the power supply control unit 210e controls the first power supply switch 112 to be on, and supplies power to the first temperature adjustment device 500 of the first greenhouse 502. Furthermore, when the cultivation temperature Tp of the crop a is higher than the internal temperature T of the first greenhouse 502, if the value obtained by subtracting the internal temperature T of the first greenhouse 502 from the cultivation temperature Tp of the crop a exceeds a second predetermined value TH2, the power supply control unit 210e controls the first power supply switch 112 to be on and supplies power to the first temperature adjustment device 500 of the first greenhouse 502. Furthermore, if the absolute value of the difference between the internal temperature T of the first greenhouse 502 and the cultivation temperature Tp of the crop a exceeds a third predetermined value TH3, the power supply control unit 210e may control the first power supply switch 112 to be on and supply power to the first temperature adjustment device 500 of the first greenhouse 502.

[0060] Similarly, when the internal temperature T of the second greenhouse 504 is higher than the cultivation temperature Tp of the crop b, if the value obtained by subtracting the cultivation temperature Tp of the crop b from the internal temperature T of the second greenhouse 504 exceeds a first predetermined value TH1, the power supply control unit 210e controls the second power supply switch 114 to be on and supplies power to the second temperature adjustment device 510 of the second greenhouse 504. Also, when the internal temperature Tp of the crop b is higher than the internal temperature T of the second greenhouse 504, if the value obtained by subtracting the internal temperature T of the second greenhouse 504 from the cultivation temperature Tp of the crop b exceeds a second predetermined value TH2, the power supply control unit 210e controls the second power supply switch 114 to be on and supplies power to the second temperature adjustment device 510 of the second greenhouse 504. In addition, when the absolute value of the difference between the internal temperature T of the second greenhouse 504 and the cultivation temperature Tp exceeds a predetermined value TH3, the power supply control unit 210e may control the second power supply switch 114 to on and supply power to the second temperature adjustment device 510 of the second greenhouse 504.

[0061] Furthermore, when there is no closed space in which the difference between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value, if the power demand determination unit 210d determines that the refrigeration equipment 520 has a demand for power, the power supply control unit 210e may supply power generated by solar light to the refrigeration equipment 520. In this case, specifically, the power supply control unit 210e controls the first power supply switch 112 and the second power supply switch 114 to be turned off and controls the third power supply switch 116 to be turned on, thereby supplying power to the refrigeration equipment 520.

[0062] Furthermore, when it is determined that there is no closed space in which the deviation between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value and that the refrigeration equipment 520 does not have a demand for power, the power supply control unit 210e may supply power generated by sunlight to the storage battery 124. In this case, specifically, the power supply control unit 210e controls the first power supply switch 112, the second power supply switch 114, and the third power supply switch 116 to be turned off, and controls the storage battery power supply switch 120 to be turned on, thereby supplying power to the storage battery 124.

[0063] The appliance control unit 210f controls the environmental adjustment appliance 700. The appliance control unit 210f transmits a control signal to the environmental adjustment appliance 700 via the communication network 220 to control the environmental adjustment appliance 700. The control signal includes a control amount of the environmental adjustment appliance 700. For example, the appliance control unit 210f controls the environmental adjustment appliance 700 based on various information acquired from the sensor 600. When the environmental adjustment appliance 700 is the first temperature adjustment appliance 500 and the second temperature adjustment appliance 510, the appliance control unit 210f controls the temperature adjustment appliance so as to cool the closed space for the closed space in which the value obtained by subtracting the cultivation temperature Tp from the internal temperature T is a positive value among the multiple closed spaces. Also, the appliance control unit 210f controls the temperature adjustment appliance so as to heat the closed space for the closed space in which the value obtained by subtracting the cultivation temperature Tp from the internal temperature T is a negative value among the multiple closed spaces.

[0064] The device control unit 210f may also control the environmental adjustment device 700 based on at least one of the weather information acquired from the server 230 and the environmental state detected by the sensor 600. For example, the device control unit 210f may control the cooling and heating of the first greenhouse 502 by the first temperature adjustment device 500 and the cooling and heating of the inside of the second greenhouse 504 by the second temperature adjustment device 510 in each of the first greenhouse 502 and the second greenhouse 504 based on at least one of the weather information acquired from the server 230 and the environmental state detected by the sensor 600. The device control unit 210f may also control the amount of water supplied by a pump that supplies water to crops in the greenhouse, the shading rate of a shading curtain that blocks sunlight in the greenhouse, the brightness of a lighting device for growing crops provided in the greenhouse, or the opening degree of a ventilation window that takes in outside air into the greenhouse, based on at least one of the weather information acquired from the server 230 and the environmental state detected by the sensor 600.

[0065] The device control unit 210f may use the trained model to control the environmental adjustment device 700. The learning unit 210g may use the input value and the training data y tA trained model is created by machine learning the relationship between at least one of the weather information and the environmental state detected by the sensor 600 and the control amount of the environmental adjustment device 700 from a plurality of data sets consisting of the above. In this case, the input values ​​x1, x2, x3, x4, and x5 are, for example, at least one of the weather information acquired from the server 230 and the environmental state acquired from the sensor 600. The input values ​​x1, x2, x3, x4, and x5 may also include the volume of the greenhouse and the specifications of the greenhouse. The teacher data yt is the actual value of the control amount of the environmental adjustment device 700. When the environmental adjustment device 700 is the first temperature adjustment device 500 and the second temperature adjustment device 510, the control amount includes the set temperature of the cooling and heating and the airflow amount. When the environmental adjustment device 700 is the refrigeration device 520, the control amount includes the set temperature of the refrigeration. When the environmental adjustment device 700 is a pump, the control amount includes the rotation speed of the pump. When the environmental adjustment device 700 is a shading curtain, the control amount includes the shading rate of the shading curtain. Furthermore, if the environmental adjustment device 700 is a lighting device, the control amount includes the brightness of the lighting device. Furthermore, if the environmental adjustment device 700 is a ventilation window, the control amount includes the opening degree of the ventilation window. As a result, when at least one of the weather information and the environmental state detected by the sensor 600 is input to the trained model, the trained model outputs the control amount of the environmental adjustment device 700. The device control unit 210f controls the environmental adjustment device 700 based on the control amount output from the trained model.

[0066] The device control unit 210f may transmit a signal including the control amount of the environmental adjustment device 700 to the user's terminal device 800. The control amount of the environmental adjustment device 700 is displayed on the display screen of the terminal device 800. This allows the user to manually control the environmental adjustment device 700 based on the control amount.

[0067] The learning unit 210g creates a trained model equivalent to the temperature acquisition unit 210b by the above-mentioned method. The learning unit 210g also creates a trained model that outputs the control amount of the environmental adjustment device 700 by the above-mentioned method.

[0068] Next, the chronological flow of the processing of the processor 210 will be described with reference to Fig. 8 and Fig. 9. First, the temperature acquisition unit 210b acquires the internal temperatures T of the first greenhouse 502 and the second greenhouse 504 in step S10 of Fig. 8. Next, the information acquisition unit 210a acquires the cultivation temperatures according to the crops in the first greenhouse 502 and the second greenhouse 504, i.e., the cultivation temperatures Tp of the crops a and b (step S12).

[0069] Next, the comparison unit 210c compares the internal temperature T of each greenhouse with the cultivation temperature Tp of the crop, and determines whether the absolute value of the difference between the internal temperature T of each greenhouse and the cultivation temperature Tp of the crop cultivated in each greenhouse exceeds a predetermined value TH3 (step S14). That is, in step S14, it is determined whether there is a greenhouse where |T-Tp|>TH3. If there is a greenhouse where |T-Tp|>TH3, the power supply control unit 210e supplies power generated by sunlight to the temperature adjustment device in the greenhouse where the absolute value of the difference between the internal temperature T and the cultivation temperature Tp exceeds the predetermined value TH3 (step S16).

[0070] Furthermore, if there is no greenhouse where |T-Tp|>TH3 in step S14, the power demand determination unit 210d determines whether or not there is a power demand for the refrigeration appliance 520 (step S18). If it is determined in step S18 that there is a power demand for the refrigeration appliance 520, the power supply control unit 210e supplies the power generated by solar light to the refrigeration appliance 520 (step S20). On the other hand, if it is determined in step S18 that there is no power demand for the refrigeration appliance 520, the power supply control unit 210e supplies the power generated by solar light to the storage battery 124 (step S22).

[0071] After steps S16 and S20, the equipment control unit 210f controls the environmental adjustment equipment 700 (step S24). When proceeding from step S16 to step S24, the equipment control unit 210f controls the environmental adjustment equipment 700 in the greenhouse where the absolute value of the difference between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value TH. Also, when proceeding from step S20 to step S24, the equipment control unit 210f controls the refrigeration equipment 520.

[0072] When the process proceeds from step S16 to step S24, more specifically, the process of Fig. 9 is performed. First, in a greenhouse where the absolute value of the difference between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value TH, it is determined whether or not the value obtained by subtracting the cultivation temperature Tp from the internal temperature T is a positive value, that is, whether or not T-Tp>0 (step S30). If T-Tp>0, the equipment control unit 210f controls the temperature adjustment equipment to cool the greenhouse (step S32).

[0073] If T-Tp>0 is not satisfied in step S30, it is determined whether or not the value obtained by subtracting the cultivation temperature Tp from the internal temperature T is a negative value, that is, whether or not T-Tp<0 (step S34). If T-Tp<0, the device control unit 210f controls the temperature adjustment device to heat the greenhouse (step S36).

[0074] As described above, according to this embodiment, in a greenhouse where the difference between the internal temperature T and the cultivation temperature Tp exceeds a predetermined value, electricity generated by sunlight is supplied to a temperature control device provided in the greenhouse. Therefore, in a greenhouse where the internal temperature and the cultivation temperature differ from each other, it is possible to bring the internal temperature T closer to the cultivation temperature Tp by using electricity generated by sunlight. [Explanation of symbols]

[0075] 100 Control System 102 Solar Panels 104 Junction box 106 DC / AC high frequency inverter 108 High Frequency Transformer 110 Earth leakage breaker 112 First power supply switch 114 Second power supply switch 116 Third power supply switch 118 AC / DC Converter 120 Battery power supply switch 122 DC / DC converter 124 Battery 200 Control device 210 Processor 210a Information acquisition section 210b Temperature acquisition section 210c comparison section 210d Electricity demand determination section 210e Power supply control unit 210f Equipment control unit 210g Learning section 212 Memory 214 Communication Interface 220 Communication Network 230 Server 300 Power Generation Companies 350 Consumer 400 Electric Power Companies 500 First temperature control device 502 Greenhouse No. 1 504 Second Greenhouse 510 Second temperature control device 520 Refrigeration Equipment 600 Sensors 700 Environmental control equipment 800 Terminal Equipment

Claims

1. A control system that supplies solar power to an environmental adjustment device that adjusts an environment in each of a plurality of closed spaces in which crops are grown, comprising: a cultivation temperature of the crops cultivated in each of the closed spaces is determined in advance according to a variety of the crops cultivated in each of the closed spaces, and is different between at least two of the closed spaces; A temperature acquisition unit that acquires an internal temperature of each of the closed spaces; A comparison unit that compares the internal temperature and the cultivation temperature for each of the closed spaces; a power supply control unit that supplies power generated by sunlight to the environmental adjustment device provided in a closed space in which the deviation between the internal temperature and the cultivation temperature exceeds a predetermined value among the plurality of closed spaces; A control system comprising:

2. The control system according to claim 1 , wherein the cultivation temperature is determined in advance according to a variety and a cultivation season of a crop cultivated in each of the closed spaces.

3. a power demand determination unit that determines a power demand of a refrigeration device, and the refrigeration device is supplied with power generated by solar power generation by the control system; 2. The control system according to claim 1, wherein when there is no closed space in which a deviation between the internal temperature and the cultivation temperature exceeds a predetermined value, the power supply control unit supplies electricity generated by solar light to the refrigeration equipment when it is determined that there is a demand for electricity in the refrigeration equipment.

4. 4. The control system according to claim 3, wherein the power supply control unit supplies electricity generated by solar power to a storage battery when it is determined that there is no closed space in which a deviation between the internal temperature and the cultivation temperature exceeds a predetermined value and that there is no demand for electricity in the refrigeration equipment.

5. The environmental adjustment device is a temperature adjustment device that adjusts the temperature inside the closed space, Further comprising an equipment control unit for controlling the temperature adjustment device, The device control unit includes: For a closed space among the plurality of closed spaces, in which a value obtained by subtracting the cultivation temperature from the internal temperature is a positive value, the temperature adjustment device provided in the closed space is controlled so as to cool the inside of the closed space; The control system of claim 1, wherein for a closed space among the plurality of closed spaces, where the value obtained by subtracting the cultivation temperature from the internal temperature is a negative value, the temperature control device provided in the closed space is controlled so as to heat the inside of the closed space.

6. The control system according to claim 1 , wherein the temperature acquisition unit predicts the internal temperature and acquires the predicted internal temperature.

7. Each of the closed spaces is further provided with a sensor for detecting an environmental condition inside and outside the closed space, The environmental adjustment device further includes an equipment control unit that controls the environmental adjustment device. The control system according to claim 1 , wherein the device control unit controls the environmental adjustment device based on at least one of meteorological information and an environmental condition detected by the sensor.

8. A learning unit that creates a trained model by machine learning a relationship between at least one of the meteorological information and the environmental state detected by the sensor and a control amount of the environmental adjustment device, The control system according to claim 7, wherein the equipment control unit controls the environmental adjustment equipment based on the control amount output from the trained model when at least one of the weather information and the environmental condition detected by the sensor is input to the trained model.

9. 8. The control system according to claim 7, wherein the environmental adjustment equipment includes at least one of a temperature adjustment equipment that adjusts the temperature inside the closed space, a pump that supplies water to crops in the closed space, a light-blocking curtain that blocks sunlight in the closed space, lighting equipment for growing crops provided in the closed space, and a ventilation window that takes in outside air into the closed space.

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