WO2020202660A1 - 栽培制御システム、栽培制御装置、栽培制御方法及び栽培制御プログラム - Google Patents

栽培制御システム、栽培制御装置、栽培制御方法及び栽培制御プログラム Download PDF

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Publication number
WO2020202660A1
WO2020202660A1 PCT/JP2019/049683 JP2019049683W WO2020202660A1 WO 2020202660 A1 WO2020202660 A1 WO 2020202660A1 JP 2019049683 W JP2019049683 W JP 2019049683W WO 2020202660 A1 WO2020202660 A1 WO 2020202660A1
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WIPO (PCT)
Prior art keywords
program
cultivation
amount
control device
sensible heat
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PCT/JP2019/049683
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English (en)
French (fr)
Japanese (ja)
Inventor
藤原　誠二
幸則 松本
賢二 河野
広光 藤山
山崎　正弘
泰匡 柴田
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パナソニック株式会社
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Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to JP2021511104A priority Critical patent/JP7454554B2/ja
Priority to CN201980094868.3A priority patent/CN113645835B/zh
Publication of WO2020202660A1 publication Critical patent/WO2020202660A1/ja

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like

Definitions

  • This disclosure relates to plant cultivation control technology.
  • an artificial light type plant factory that promotes growth by artificially controlling an air conditioner and artificial lighting in an indoor environment has attracted attention in order to cultivate plants without being affected by weather conditions.
  • environmental control equipment such as air conditioners and artificial lighting, as well as water and fertilizer, are used based on measurement data such as room temperature, humidity, and amount of light in the cultivation environment.
  • the operation of the breeding control device to be supplied is automatically controlled by a preset breeding program.
  • Patent Document 1 describes that a sensor manages and grasps the growing condition, and the environment is remotely controlled by setting a growing program according to the degree of growth.
  • Patent Document 1 it is not examined that the heat supplied by the amount of light supplied to the cultivation environment is used to increase the sensible heat of the cultivation environment, and in order to realize the cultivation control suitable for growth, Further improvement was needed.
  • the cultivation control system is Light control equipment that controls the amount of light supplied to the cultivation environment in which plants are grown,
  • the first sensor that detects the growth state of the plant and A storage unit in which the first program in which the operating specifications of the optical control device are defined is stored, and A control device that controls the operation of the optical control device according to the first program, and
  • the control device Based on the growth state of the plant detected by the first sensor, the sensible heat corresponding to the amount of light supplied to the cultivation environment by the optical control device is used to increase the sensible heat of the cultivation environment.
  • a judgment processing unit that determines whether or not the contribution has decreased, When it is determined that the sensible heat contribution has decreased, the operating specifications of the optical control device have been determined so that the amount of light supplied to the cultivation environment by the optical control device increases as compared with the first program.
  • An acquisition processing unit that acquires the second program from the cultivation management server through a communication network and stores it in the storage unit. When the second program is acquired, the device control unit that controls the operation of the optical control device according to the second program instead of the first program Is included.
  • cultivation control suitable for plant growth can be realized, and a system for stabilizing crop quality can be provided.
  • Patent Document 1 when the environmental state in the breeding tank is transmitted to the breeding management server through the communication network, a breeding program related to the operation of the operation control unit is created in the breeding management server.
  • the created breeding program is transmitted to a computer such as a smartphone and stored, and the computer switches the breeding program to control the cultivation equipment.
  • a cultivation program is created based on the cultivation environment information, and the equipment operation method is updated according to the cultivation environment state to control the cultivation equipment.
  • Patent Document 1 it has not been examined whether or not the heat supply associated with the amount of light supplied to the cultivation environment is used to increase the sensible heat of the cultivation environment. Therefore, Patent Document 1 has a problem that cultivation control suitable for plant growth cannot be realized and the quality of crops cannot be stabilized. Therefore, the inventors of the present disclosure examined the sensible heat contribution, which indicates the degree to which the heat supply associated with the amount of light supplied to the cultivation environment is used to increase the sensible heat of the cultivation environment.
  • the heat supply associated with the amount of light supplied to the cultivation environment is used more for the vaporization of the transpiration water.
  • the heat supply associated with the amount of light supplied to the cultivation environment is used more than the sensible heat rise in the cultivation environment. Therefore, the sensible heat contribution, which indicates the degree to which the heat supplied by the amount of light supplied to the cultivation environment is used to increase the sensible heat of the cultivation environment, decreases. When the sensible heat contribution decreases, the temperature rise in the cultivation environment is suppressed even if the amount of light supplied to the cultivation environment is increased.
  • the cultivation control system is Light control equipment that controls the amount of light supplied to the cultivation environment in which plants are grown,
  • the first sensor that detects the growth state of the plant and A storage unit in which the first program in which the operating specifications of the optical control device are defined is stored, and A control device that controls the operation of the optical control device according to the first program, and
  • the control device Based on the growth state of the plant detected by the first sensor, the sensible heat corresponding to the amount of light supplied to the cultivation environment by the optical control device is used to increase the sensible heat of the cultivation environment.
  • a judgment processing unit that determines whether or not the contribution has decreased, When it is determined that the sensible heat contribution has decreased, the operating specifications of the optical control device have been determined so that the amount of light supplied to the cultivation environment by the optical control device increases as compared with the first program.
  • An acquisition processing unit that acquires the second program from the cultivation management server through a communication network and stores it in the storage unit. When the second program is acquired, the device control unit that controls the operation of the optical control device according to the second program instead of the first program Is included.
  • the cultivation control method is It is a cultivation control method in a cultivation control system equipped with an optical control device that controls the amount of light supplied to the cultivation environment for growing plants.
  • the operation of the optical control device is controlled according to the first program in which the operation specifications of the optical control device are defined.
  • the growth state of the plant is detected, Based on the detected growth state of the plant, the sensible heat contribution, which indicates the degree to which the heat supply associated with the amount of light supplied to the cultivation environment by the light control device is used to increase the sensible heat of the cultivation environment, has decreased.
  • the second program is acquired from the cultivation management server through the communication network and saved in the storage unit. When the second program is acquired, the operation of the optical control device is controlled according to the second program instead of the first program.
  • the optical control device is controlled according to the second program instead of the first program.
  • the operating specifications of the optical control device are defined so that the amount of light increases as compared with the first program. Therefore, it is possible to realize cultivation control suitable for plant growth and provide a system for stabilizing the quality of crops.
  • the first sensor includes at least one of a water supply amount measuring unit for measuring the water supply amount to the plant and a drainage amount measuring unit for measuring the drainage amount from the plant.
  • the determination processing unit calculates the amount of absorbed water absorbed by the plant based on at least one of the water supply amount and the drainage amount, and when the absorbed water amount exceeds a preset water amount threshold value, the sensible heat contribution It may be determined that the degree has decreased.
  • the amount of absorbed water absorbed by the plant increases as the plant grows. Therefore, when the absorbed water amount exceeds the water amount threshold value, it can be determined that the number of leaves increases due to the growth of the plant and the amount of transpiration water from the leaves increases.
  • the amount of transpiration water increases, it can be determined that the heat supply associated with the amount of light supplied to the cultivation environment is used more for vaporization of the transpiration water other than the increase in sensible heat, and the contribution of sensible heat decreases. Therefore, according to this aspect, the decrease in the sensible heat contribution can be determined more appropriately.
  • the first sensor includes a medium weight meter that measures the weight of the plant and the medium in which the plant is planted.
  • the determination processing unit may determine that the sensible heat contribution has decreased when the measured weight measured by the medium weight scale exceeds a preset weight threshold value.
  • the measured weight measured by the medium weight scale includes the plant weight, it increases with the growth of the plant. Therefore, when the measured weight exceeds the weight threshold value, it can be determined that the leaves increase due to the growth of the plant and the amount of transpiration water from the leaves increases.
  • the amount of transpiration water increases, it can be determined that the heat supply associated with the amount of light supplied to the cultivation environment is used more for vaporization of the transpiration water other than the increase in sensible heat, and the contribution of sensible heat decreases. Therefore, according to this aspect, the decrease in the sensible heat contribution can be determined more appropriately.
  • the first sensor includes an imaging device that captures an image including the plant.
  • the determination processing unit calculates the area ratio of at least the leaves of the plant to the captured image captured by the imaging device, and when the area ratio exceeds a preset ratio threshold value, the sensible heat contribution It may be determined that the degree has decreased.
  • the area of the leaves of the plant increases with the growth of the plant. Therefore, when the area ratio of the leaves exceeds the ratio threshold value, it can be determined that the leaves increase due to the growth of the plant and the amount of transpiration water from the leaves increases.
  • the amount of transpiration water increases, it can be determined that the heat supply associated with the amount of light supplied to the cultivation environment is used more for vaporization of the transpiration water other than the increase in sensible heat, and the contribution of sensible heat decreases. Therefore, according to this aspect, the decrease in the sensible heat contribution can be determined more appropriately.
  • the acquisition processing unit may erase the first program from the storage unit after storing the second program in the storage unit.
  • the determination processing unit After switching from the first program to the second program, the determination processing unit performs the sensible heat when the temperature of the cultivation environment detected by the second sensor exceeds a preset temperature threshold value. Judging that the heat contribution has increased, When the determination processing unit determines that the sensible heat contribution has increased, the acquisition processing unit reduces the amount of light supplied to the cultivation environment as compared with the second program.
  • the third program in which the operation specifications of the above are defined is acquired from the cultivation management server through the communication network and stored in the storage unit. When the third program is acquired, the device control unit may control the operation of the optical control device according to the third program instead of the second program.
  • the operation of the optical control device is controlled according to the third program instead of the second program.
  • the operating specifications of the optical control device are defined so that the amount of light is reduced as compared with the second program. Therefore, it is possible to prevent the temperature of the cultivation environment from rising further.
  • the acquisition processing unit may erase the second program from the storage unit after storing the third program in the storage unit.
  • the cultivation control device is An equipment control unit that controls the operation of the light control device that controls the amount of light supplied to the cultivation environment in which the plant is grown according to the first program in which the operation specifications of the light control device are defined. Whether or not the sensible heat contribution, which indicates the degree to which the heat supply associated with the amount of light supplied to the cultivation environment by the light control device is used to increase the sensible heat of the cultivation environment, is reduced based on the growth state of the plant. Judgment processing unit to determine When it is determined that the sensible heat contribution has decreased, the cultivation management server uses a second program in which the operating specifications of the optical control device are determined so that the amount of light supplied to the cultivation environment increases from the first program. It is equipped with an acquisition processing unit that acquires from the communication network and saves it in the storage unit. When the second program is acquired, the device control unit controls the operation of the optical control device according to the second program instead of the first program.
  • the cultivation control method is It is a cultivation control method in a cultivation control device that controls the growth of plants.
  • the operation of the light control device that controls the amount of light supplied to the cultivation environment in which the plant is grown is controlled according to the first program in which the operation specifications of the light control device are defined.
  • the sensible heat contribution which indicates the degree to which the heat supply associated with the amount of light supplied to the cultivation environment by the light control device is used to increase the sensible heat of the cultivation environment, is reduced based on the growth state of the plant.
  • the cultivation management server uses a second program in which the operating specifications of the optical control device are determined so that the amount of light supplied to the cultivation environment increases from the first program. Obtained from the communication network and saved in the storage When the second program is acquired, the operation of the optical control device is controlled according to the second program instead of the first program.
  • the cultivation control program is To the computer of the cultivation control device that controls the growth of plants A process of controlling the operation of the light control device that controls the amount of light supplied to the cultivation environment for growing the plant according to the first program in which the operation specifications of the light control device are defined. Whether or not the sensible heat contribution, which indicates the degree to which the heat supply associated with the amount of light supplied to the cultivation environment by the light control device is used to increase the sensible heat of the cultivation environment, is reduced based on the growth state of the plant. And the process of determining When it is determined that the sensible heat contribution has decreased, the cultivation management server uses a second program in which the operating specifications of the optical control device are determined so that the amount of light supplied to the cultivation environment increases from the first program. The process of acquiring from the communication network and saving it in the storage unit, When the second program is acquired, a process of controlling the operation of the optical control device according to the second program instead of the first program, and Is to be executed.
  • the cultivation control suitable for the growth of the plant can be realized and the quality of the crop can be stabilized as in the first aspect.
  • FIG. 1 is a block diagram schematically showing a control configuration of a cultivation management server and a cultivation control system according to the first embodiment.
  • the cultivation control system 100 of the first embodiment includes a room temperature sensor 110, a solar radiation sensor 120, a side window 130, a ceiling curtain 140, a water supply device 150, a drainage device 160, and a control device 300. Further, the cultivation control system 100 is communicably connected to the cultivation management server 10 via the communication network 90.
  • the cultivation control system 100 is installed in a vinyl greenhouse which is an example of a facility cultivation facility for cultivating a plant to be cultivated (tomato in the first embodiment).
  • the control device 300 includes a memory 310, a central processing unit (CPU) 320, and peripheral circuits (not shown).
  • the memory 310 (corresponding to an example of the storage unit) is composed of, for example, a semiconductor memory or the like.
  • the memory 310 includes, for example, a read-only memory (ROM), a random access memory (RAM), an electrically erasable and rewritable ROM (EEPROM), and the like.
  • the CPU 320 functions as a determination processing unit 321, an acquisition processing unit 322, and a device control unit 323 by operating according to the control program of the first embodiment stored in the memory 310, for example, the ROM.
  • the functions of the determination processing unit 321 and the acquisition processing unit 322 and the device control unit 323 will be described later.
  • the cultivation management server 10 includes a hard disk or a semiconductor non-volatile memory that stores an initial program 20 (corresponding to an example of the first program) and an increase update program 30 (corresponding to an example of the second program) in advance.
  • the operation specifications of the ceiling curtain 140 are defined in the initial program 20 and the increase update program 30, respectively.
  • the initial program 20 is pre-downloaded from the cultivation management server 10 to the control device 300 and stored in the memory 310, for example, RAM or EEPROM.
  • the device control unit 323 of the CPU 320 controls the operation of the ceiling curtain 140 according to the initial program 20.
  • the room temperature sensor 110 detects the dry-bulb temperature in the greenhouse.
  • the room temperature sensor 110 can be installed at any place in the greenhouse.
  • the solar radiation sensor 120 includes a pyranometer that is installed above the ceiling curtain 140 and detects the amount of solar radiation [W / m 2 ] incident in the greenhouse.
  • the solar radiation sensor 120 is not limited to a pyranometer that detects the amount of solar radiation [W / m 2 ], but is also an illuminance meter that detects the illuminance [lux] or a photometer that detects the photon flux density [ ⁇ mol / m 2 s]. It may include a sensor. Alternatively, the solar radiation sensor 120 may include a sensor that detects energy of a specific wavelength contained in sunlight. In this case, the relationship between the known energy of a specific wavelength contained in sunlight and the amount of solar radiation may be stored in the memory 310 as a control program. The determination processing unit 321 of the CPU 320 can obtain the amount of solar radiation from the above relationship of the memory 310 and the energy of a specific wavelength contained in sunlight. Further, the arrangement of the solar radiation sensor 120 is not limited to the above, and may be installed below the ceiling curtain 140, or may be installed outside the vinyl house to detect the amount of solar radiation in the external environment. ..
  • the side window 130 includes a straight pipe (not shown) for winding a coating film covering the side surface of the vinyl house, and an opening / closing drive unit 131 for rotating the straight pipe, and the side surface of the vinyl house can be opened / closed. ..
  • the opening / closing drive unit 131 includes, for example, a motor.
  • the ceiling curtain 140 (corresponding to an example of an optical control device) controls the amount of solar energy supplied from the sky incident on a greenhouse.
  • the ceiling curtain 140 is provided near the ceiling inside the vinyl house, and is configured to be able to block sunlight incident from the upper surface of the vinyl house at a constant rate.
  • the ceiling curtain 140 includes a straight pipe (not shown) for winding the curtain, and an opening / closing drive unit 141 for rotating the straight pipe.
  • the opening / closing drive unit 141 includes, for example, a motor.
  • the method of opening and closing the ceiling curtain 140 is not limited to the one of winding up using a straight pipe, and a structure may be used in which a wire is attached to the curtain and pulled by the opening / closing drive unit 141 to be folded.
  • the water supply device 150 includes a pump 151 and a water supply amount measuring unit 152, and operates the pump 151 at a predetermined time to supply water to the plant to be cultivated.
  • the water supply amount measuring unit 152 is, for example. It is a flow meter that measures the flow rate of water flowing out from the pump 151 and measures the amount of water supplied to the plant to be cultivated. If the flow rate per unit time of the pump 151 is known, the water supply amount measuring unit 152 may measure the water supply amount based on the operating time of the pump 151.
  • the water supply device 150 may be configured to provide water to plants by providing a faucet, a valve, and a solenoid valve in a pipe from a water pipe or a shallow well pump and opening them when necessary.
  • the water supply device 150 may also be used as a device for supplying liquid fertilizer.
  • the water supply device 150 may include a tank for storing a liquid fertilizer having a predetermined concentration, and the pump 151 may be used to supply the liquid fertilizer from the tank to the plant to be cultivated at a predetermined time. Further, the water supply device 150 may be configured to supply the liquid fertilizer after diluting it with tap water or groundwater.
  • the water supply device 150 may include a measuring unit for measuring the electric conductivity and the pH value of the liquid fertilizer, and may be configured to automatically adjust the electric conductivity and the pH value to a predetermined value.
  • the timing of supplying water from the water supply device 150 to the plant may be not only a predetermined time but also a configuration in which water is supplied based on the measurement result of the amount of solar radiation detected by the solar radiation sensor 120.
  • the water supply device 150 does not normally supply water until 12 o'clock after supplying water to the plant at 9 o'clock, but when the cumulative amount of solar radiation exceeds a predetermined threshold value, an additional predetermined amount may be supplied.
  • the drainage device 160 includes a pump 161 and a drainage amount measuring unit 162, and drains water that has not been absorbed by the plant to be cultivated (tomato in this first embodiment).
  • the drainage measuring unit 162 measures the amount of water supplied to the tomatoes from the water supply device 150 that is not absorbed by the tomatoes.
  • tomatoes are placed in a housing (for example, a planter) together with a medium, and water not absorbed by the tomatoes is collected in a drainage tank (not shown) provided in one greenhouse in a vinyl house through the housing. It is said that it is configured.
  • the pump 161 installed in the drainage tank pumps out the accumulated drainage and discharges it to the outside of the greenhouse.
  • the drainage measurement unit 162 is, for example, a flow meter that measures the amount of drainage discharged from the drainage tank to the outside of the greenhouse by the pump 161.
  • each function of the CPU 320 will be described below.
  • the heat energy in the solar energy incident on the vinyl house contributes to the increase in sensible heat, so that the room temperature of the vinyl house tends to rise. , It is more likely to inhibit the growth of tomatoes.
  • the ceiling curtain 140 is closed, the rise in room temperature can be suppressed. Therefore, in the initial program 20, when the amount of solar radiation detected by the solar radiation sensor 120 exceeds 500 [W / m 2 ], the ceiling curtain 140 is closed and becomes 500 [W / m 2 ] or less.
  • the operating specifications of the ceiling curtain 140 are defined so that the ceiling curtain 140 is sometimes opened.
  • the threshold value of the amount of solar radiation may be set according to the region and time. Further, in order to provide redundancy in the opening and closing operations of the ceiling curtain 140, a differential may be provided between the opening threshold and the closing threshold of the ceiling curtain 140.
  • the thermal energy in the solar energy incident on the greenhouse is used more for the vaporization of transpiration water.
  • the thermal energy in the solar energy supplied to the greenhouse is used more than the sensible heat rise in the greenhouse. Therefore, the sensible heat contribution, which indicates the degree to which the heat supplied with the amount of light supplied to the greenhouse is used to increase the sensible heat in the greenhouse, decreases.
  • the contribution of sensible heat decreases, the rise in room temperature in the greenhouse is suppressed even if the amount of light supplied to the cultivation environment is increased.
  • the determination processing unit 321 grasps the growth state of the tomato from the water supply amount measured by the water supply amount measuring unit 152 and the drainage amount measured by the drainage amount measuring unit 162. That is, when the amount of absorbed water per tomato strain exceeds a predetermined water amount threshold value, the determination processing unit 321 determines that the tomato has grown and the contribution to sensible heat has decreased, and the initial program 20 is updated.
  • the water supply amount measuring unit 152 of the water supply device 150 and the drainage amount measuring unit 162 of the drainage device 160 correspond to an example of the first sensor.
  • the cultivation management server 10 stores an increase update program 30 in which the threshold value of the amount of solar radiation for opening and closing the ceiling curtain 140 is 700 [W / m 2 ]. That is, in the increase update program 30, when the amount of solar radiation detected by the solar radiation sensor 120 exceeds 700 [W / m 2 ], the ceiling curtain 140 is closed and becomes 700 [W / m 2 ] or less.
  • the operating specifications of the ceiling curtain 140 are defined so that the ceiling curtain 140 is opened at that time.
  • the determination processing unit 321 determines that the sensible heat contribution has decreased when the amount of absorbed water per tomato strain exceeds the water amount threshold value (for example, 1 [liter / day] in this first embodiment).
  • the acquisition processing unit 322 of the CPU 320 acquires the increase update program 30 from the cultivation management server 10 through the communication network 90.
  • the acquisition processing unit 322 stores the acquired update program 30 for increase in the memory 310, for example, RAM or EEPROM.
  • the device control unit 323 controls the operation of the ceiling curtain 140 and the like according to the increase update program 30.
  • the control program of the first embodiment stored in the memory 310 in advance includes the number of tomato stocks in the vinyl house. Using this number of strains, the amount of absorbed water per tomato strain can be calculated from the amount of water supply measured by the water supply amount measuring unit 152 and the amount of wastewater measured by the drainage amount measuring unit 162.
  • FIG. 2 is a flowchart schematically showing an example of an operation procedure of the cultivation control system 100 of the first embodiment. The operation of FIG. 2 is executed, for example, once a day.
  • step S1000 the determination processing unit 321 acquires the water supply amount measured by the water supply amount measurement unit 152.
  • step S1005 the determination processing unit 321 acquires the displacement measured by the displacement measuring unit 162.
  • step S1010 the determination processing unit 321 calculates the absorbed water amount per tomato stock by dividing the difference obtained by subtracting the drainage amount from the water supply amount by the number of tomato stocks.
  • step S1015 the determination processing unit 321 determines whether or not the amount of absorbed water per tomato strain exceeds the water amount threshold value (1 [liter / day] in the first embodiment).
  • step S1015 If the amount of absorbed water per tomato strain exceeds the water amount threshold value (YES in step S1015), the determination processing unit 321 determines that the sensible heat contribution has decreased, and the process proceeds to step S1020. On the other hand, if the amount of absorbed water per tomato strain is equal to or less than the water amount threshold value (NO in step S1015), the operation of FIG. 2 ends.
  • step S1020 the acquisition processing unit 322 acquires the increase update program 30 from the cultivation management server 10, and obtains the acquired increase update program 30. , Store in memory 310, for example RAM or EEPROM. After that, the operation of FIG. 2 ends.
  • the growth state of tomatoes can be grasped by determining whether or not the amount of absorbed water corresponding to the growth of tomatoes exceeds the water amount threshold value.
  • the opening and closing of the ceiling curtain 140 is controlled according to the increase update program 30 instead of the initial program 20.
  • the threshold value of the amount of solar radiation for opening and closing the ceiling curtain 140 is set higher than that in the initial program 20, so that the solar energy incident on the vinyl house increases. Growth is further promoted. Therefore, it is possible to cultivate tomatoes with optimum control according to the growth of tomatoes. As a result, it is possible to provide a system for stabilizing the quality of crops.
  • the opening and closing of the ceiling curtain 140 is controlled according to the initial program 20, the plants are suppressed from being exposed to high temperatures, especially in the summer or in the tropical and subtropical areas, and the plants grow. It can be precisely controlled according to the state.
  • the water amount threshold value for switching from the initial program 20 to the increase update program 30 can be set to a different value according to conditions such as area, time, and cultivation area. For example, if the area is to the south, the season is summer, or the cultivation area is small, the room temperature inside the greenhouse tends to rise. Therefore, in these cases, the water amount threshold value of the absorbed water amount may be set high. Then, since the timing of giving a lot of sunlight is delayed, it is possible to avoid a situation in which the room temperature rises excessively.
  • the water amount threshold value may be determined in consideration of the value detected by either or both of the room temperature sensor 110 and the solar radiation sensor 120. For example, when the amount of solar radiation is small, it is difficult to evaporate, and when the amount of solar radiation is large, it is easy to evaporate. Therefore, even if the amount of water absorbed by tomatoes is the same on cloudy days and sunny days, it may not be possible to say that the degree of growth is the same. Further, for example, since the amount of absorbed water increased when the room temperature was high, it was judged that the plant had grown, but it is also possible that the plant did not actually grow. Therefore, the determination processing unit 321 may change the water amount threshold value according to the daily cultivation environment.
  • the determination processing unit 321 may change the water amount threshold value according to the room temperature. For example, the determination processing unit 321 may determine the water amount threshold value when the average room temperature is 25 [° C.] to 1 [liter / day]. When the average room temperature is 30 [° C.] and the calculated amount of absorbed water is 1 [liter / day], the determination processing unit 321 absorbs when the average room temperature is 25 [° C.]. The calculation result of the absorbed water amount may be corrected by determining that the water amount corresponds to 0.8 [liter / day]. Alternatively, the determination processing unit 321 may correct the water amount threshold value according to the average room temperature, instead of correcting the calculation result of the absorbed water amount according to the average room temperature. When the average room temperature is 30 [° C.], the determination processing unit 321 may change the water amount threshold value to 1.2 [liters / day].
  • the determination processing unit 321 may change the water amount threshold value according to the room temperature and the amount of solar radiation. For example, the determination processing unit 321 may determine the water amount threshold value to 1 [liter / day] when the average room temperature is 25 [° C.] and the amount of solar radiation is 500 [W / m 2 ]. Then, when the amount of absorbed water today exceeds 1 [liter / day], but the average room temperature is 30 [° C.] and the amount of solar radiation is 700 [W / m 2 ], the determination processing unit 321 May be determined not to grow (the amount of absorbed water per strain does not exceed the water amount threshold value). Such correction of the calculation result or change of the water amount threshold value may be performed every day, for example, before the operation shown in FIG. 2 is executed.
  • the cultivation control system 100 may not include the water supply amount measuring unit 152, and the memory 310 may store the water supply amount, and the determination processing unit 321 may store the water supply amount.
  • the absorbed water amount may be calculated from the constant value of the water supply amount and the drainage amount measured by the drainage amount measuring unit 162.
  • FIG. 3 is a block diagram schematically showing the control configuration of the cultivation management server and the cultivation control system in the second embodiment.
  • FIG. 4 is a diagram schematically showing the medium weight scale and the plant body in the second embodiment.
  • the main difference between the cultivation control system 100A of the second embodiment and the cultivation control system 100 of the first embodiment is that it includes a medium weight scale 170.
  • the cultivation control system 100A of the second embodiment includes a room temperature sensor 110, a solar radiation sensor 120, a side window 130, a ceiling curtain 140, a water supply device 150, a medium weight scale 170, and a control device 300A. Further, the cultivation control system 100A is communicably connected to the cultivation management server 10 via the communication network 90. In this second embodiment, the cultivation control system 100A is installed in the vinyl house as in the first embodiment.
  • the water supply device 150 of the second embodiment does not have to include the water supply amount measuring unit 152.
  • the medium 172 on which the plant 171 (tomato in the second embodiment) is planted is placed on the medium weight scale 170.
  • the medium weight scale 170 measures the total weight of the plant 171 and the medium 172.
  • the medium weight scale 170 outputs the measured weight to the control device 300A.
  • the medium weight scale 170 corresponds to an example of the first sensor in the second embodiment.
  • a rock wool cube is used as the medium 172, and the structure in which the rock wool cube is placed on the medium weight scale 170 is convenient, but the present disclosure is not limited to this.
  • a cultivation target plant may be planted in a cultivation pot containing soil, coconut husks, etc., and the cultivation pot may be placed on a medium weight scale 170.
  • the medium 172 and the drainage facility may be mounted on the medium weight scale 170 together.
  • a medium in which a plurality of tomato strains are planted may be placed on the medium weight scale 170.
  • the control device 300A includes a memory 310A, a CPU 320A, and peripheral circuits (not shown).
  • the memory 310A (corresponding to an example of the storage unit) is composed of, for example, a semiconductor memory or the like.
  • the memory 310A includes, for example, ROM, RAM, EEPROM and the like.
  • the CPU 320A functions as a determination processing unit 321A, an acquisition processing unit 322, and a device control unit 323 by operating according to the control program of the second embodiment stored in the memory 310A, for example, the ROM.
  • the measured weight measured by the medium weight scale 170 increases.
  • the growth and weight increase of tomatoes means an increase in the number of leaves or the area of leaves. Therefore, the amount of transpiration water also increases.
  • the thermal energy in the solar energy incident on the greenhouse is used more for the vaporization of the transpired water.
  • the thermal energy in the solar energy supplied to the greenhouse is used more than the sensible heat rise of the greenhouse. Therefore, the sensible heat contribution, which indicates the degree to which the heat supplied with the amount of light supplied to the greenhouse is used to increase the sensible heat of the greenhouse, decreases.
  • the contribution of sensible heat decreases, the rise in room temperature in the greenhouse can be suppressed even if the amount of light supplied to the cultivation environment is increased.
  • the determination processing unit 321A determines that the sensible heat contribution has decreased due to the growth of the tomato.
  • the weight threshold value may be set to an appropriate value according to the type of plant.
  • the acquisition processing unit 322 acquires the increase update program 30 from the cultivation management server 10 and stores it in the memory 310A, for example, RAM or EEPROM. After that, the device control unit 323 controls the opening and closing of the ceiling curtain 140 according to the increase update program 30.
  • FIG. 5 is a flowchart schematically showing an example of an operation procedure of the cultivation control system 100A of the second embodiment. The operation of FIG. 5 is executed, for example, once a day.
  • step S1100 the determination processing unit 321A acquires the measured weight measured by the medium weight scale 170.
  • step S1105 the determination processing unit 321A determines whether or not the measured weight exceeds the weight threshold value.
  • step S1105 If the measured weight exceeds the weight threshold value (YES in step S1105), the determination processing unit 321A determines that the sensible heat contribution has decreased, and the process proceeds to step S1020. On the other hand, if the measured weight is equal to or less than the weight threshold value (NO in step S1105), the operation of FIG. 5 ends.
  • the process of step S1020 of FIG. 5 is the same as the process of step S1020 of FIG.
  • the weight of the medium 172 containing the plant (tomato) 171 was measured by the medium weight scale 170, and the measured weight obtained by the measurement exceeded the weight threshold.
  • the opening and closing of the ceiling curtain 140 is controlled according to the increase update program 30 instead of the initial program 20.
  • the threshold value of the amount of solar radiation for opening and closing the ceiling curtain 140 is set higher than that in the initial program 20, so that the solar energy incident on the vinyl house increases. Growth is further promoted. This makes it possible to cultivate tomatoes under optimal control according to the growth of tomatoes, as in the first embodiment. As a result, it is possible to provide a system for stabilizing the quality of crops.
  • FIG. 6 is a block diagram schematically showing the control configuration of the cultivation management server and the cultivation control system in the third embodiment.
  • the main difference between the cultivation control system 100B of the third embodiment and the first embodiment is that the cultivation control system 100B includes a camera 180 that captures an image of a plant.
  • the cultivation control system 100B of the third embodiment includes a room temperature sensor 110, a solar radiation sensor 120, a side window 130, a ceiling curtain 140, a water supply device 150, a camera 180, and a control device 300B. Further, the cultivation control system 100B is communicably connected to the cultivation management server 10 via the communication network 90. In this third embodiment, the cultivation control system 100B is installed in the vinyl house as in the first embodiment.
  • the water supply device 150 of the third embodiment does not have to include the water supply amount measuring unit 152.
  • the camera 180 captures an arbitrary part including a plant (tomato in the third embodiment).
  • the camera 180 outputs the captured image obtained by imaging to the control device 300B.
  • the camera 180 corresponds to an example of the first sensor in the third embodiment.
  • the control device 300B includes a memory 310B, a CPU 320B, and peripheral circuits (not shown).
  • the memory 310B (corresponding to an example of the storage unit) is composed of, for example, a semiconductor memory or the like.
  • the memory 310B includes, for example, a ROM, a RAM, an EEPROM, and the like.
  • the CPU 320B functions as a determination processing unit 321B, an acquisition processing unit 322, and a device control unit 323 by operating according to the control program of the third embodiment stored in the memory 310B, for example, the ROM.
  • the determination processing unit 321B determines the color of the captured image captured by the camera 180, and determines the area ratio occupied by green (that is, leaves) in the captured image to grow a plant (tomato in the third embodiment). Grasp the status.
  • various shapes of tomato leaves may be stored in the memory 310B in advance, and the determination processing unit 321B may determine the area ratio occupied by the leaves by template matching.
  • the area ratio of green (that is, leaves) in the image captured by the camera 180 increases.
  • the heat energy in the solar energy incident on the greenhouse is used more for the vaporization of the vaporized water (that is, other than the increase in the sensible heat of the greenhouse). Therefore, the sensible heat contribution, which indicates the degree to which the heat supplied with the amount of light supplied to the greenhouse is used to increase the sensible heat of the greenhouse, decreases.
  • the contribution of sensible heat decreases, the rise in room temperature in the greenhouse can be suppressed even if the amount of light supplied to the cultivation environment is increased.
  • the determination processing unit 321B determines that when the area ratio of green (that is, leaves) exceeds the ratio threshold determined according to the type of tomato, the contribution of sensible heat is reduced due to the growth of tomatoes. In the case of plants other than tomatoes, the ratio threshold value may be set to an appropriate value according to the type of plant.
  • the acquisition processing unit 322 acquires the increase update program 30 from the cultivation management server 10 and stores it in the memory 310B, for example, RAM or EEPROM. After that, the device control unit 323 controls the opening and closing of the ceiling curtain 140 according to the increase update program 30.
  • FIG. 7 is a flowchart schematically showing an example of an operation procedure of the cultivation control system 100B of the third embodiment. The operation of FIG. 7 is executed, for example, once a day.
  • step S1200 the determination processing unit 321B acquires the captured image captured by the camera 180.
  • step S1205 the determination processing unit 321B calculates the area ratio of green to the captured image.
  • step S1210 the determination processing unit 321B determines whether or not the green area ratio exceeds the ratio threshold value.
  • step S1210 determines that the sensible heat contribution has decreased, and the process proceeds to step S1020.
  • the green area ratio is equal to or less than the ratio threshold value (NO in step S1210), the operation of FIG. 7 ends.
  • the process of step S1020 of FIG. 7 is the same as the process of step S1020 of FIG.
  • the portion containing the tomato is imaged by the camera 180, and it is determined whether or not the green area ratio in the captured image exceeds the ratio threshold value. Similar to the first embodiment, the growing state of tomato can be grasped. When it is determined that the green area ratio in the captured image exceeds the ratio threshold value, it is determined that the sensible heat contribution has decreased, and the opening and closing of the ceiling curtain 140 is controlled according to the increase update program 30 instead of the initial program 20. To. In the increase update program 30, the threshold value of the amount of solar radiation for opening and closing the ceiling curtain 140 is set higher than that in the initial program 20, so that the solar energy incident on the vinyl house increases. Growth is further promoted. This makes it possible to cultivate tomatoes under optimal control according to the growth of tomatoes, as in the first embodiment. As a result, it is possible to provide a system for stabilizing the quality of crops.
  • FIG. 8 is a block diagram schematically showing the control configuration of the cultivation management server and the cultivation control system in the fourth embodiment.
  • the cultivation control system 100C is installed in an artificial light type plant factory which is a cultivation facility for cultivating plants with artificial lighting.
  • an example of hydroponically cultivating lettuce as a plant to be cultivated in a lettuce cultivation tank installed in a cultivation facility will be described.
  • the cultivation control system 100C of the fourth embodiment includes a room temperature sensor 110, a water temperature sensor 190, a photon sensor 200, a water supply device 150C, a drainage device 160C, a lighting device 210, an air conditioner 220, and a control device 300C. Further, the cultivation control system 100C is communicably connected to the cultivation management server 10C via the communication network 90.
  • the control device 300C includes a memory 310C, a CPU 320C, and peripheral circuits (not shown).
  • the memory 310C (corresponding to an example of the storage unit) is composed of, for example, a semiconductor memory or the like.
  • the memory 310C includes, for example, ROM, RAM, EEPROM and the like.
  • the CPU 320C functions as a determination processing unit 321C, an acquisition processing unit 322, and a device control unit 323C by operating according to the control program of the fourth embodiment stored in the memory 310C, for example, the ROM.
  • the functions of the determination processing unit 321C, the acquisition processing unit 322, and the device control unit 323C will be described later.
  • the cultivation management server 10C includes a hard disk or a semiconductor non-volatile memory that previously stores the initial program 20C (corresponding to an example of the first program) and the update program 30C for increasing (corresponding to an example of the second program).
  • the initial program 20C and the increase update program 30C the operating specifications of the lighting device 210 are defined respectively.
  • the initial program 20C is pre-downloaded from the cultivation management server 10C to the control device 300C and stored in the memory 310C, for example, RAM or EEPROM.
  • the device control unit 323C of the CPU 320C controls the operation of the lighting device 210 according to the initial program 20C.
  • the water supply device 150C includes a pump 151 and a water level sensor 153 to supply liquid fertilizer to lettuce.
  • the water level sensor 153 includes three electrodes installed in the lettuce cultivation tank, and detects the water level in the lettuce cultivation tank based on the presence or absence of energization between the electrodes.
  • the water level sensor 153 may be configured by a ball tap method, and may be configured so that the water level of the lettuce cultivation tank can be detected.
  • the water supply device 150 includes a tank for storing a predetermined concentration of liquid fertilizer. When the water level in the lettuce cultivation tank detected by the water level sensor 153 drops below a certain standard (described later), the device control unit 323C drives the pump 151 to supply liquid fertilizer to the lettuce cultivation tank.
  • the water supply device 150C may be configured to supply the liquid fertilizer after diluting it with tap water or groundwater. Further, the water supply device 150C may include a measuring unit for measuring the electric conductivity and the pH value of the liquid fertilizer, and may be configured to automatically adjust the electric conductivity and the pH value to a predetermined value.
  • the drainage device 160C drains the water accumulated in the lettuce cultivation tank.
  • the drainage device 160C is configured so that the stopper is closed without draining during cultivation and drained when the lettuce cultivation tank is washed.
  • the drainage device 160C may be configured to constantly drain water.
  • the drainage device 160C may include an electromagnetic valve installed in the lettuce cultivation tank, and the equipment control unit 323C may be configured to open the electromagnetic valve at a predetermined timing to drain the water.
  • the drainage device 160C may include a flow meter and may be configured to measure the amount of drainage.
  • the water temperature sensor 190 is installed at the outlet of the water supply device 150C and measures the temperature of the liquid fertilizer supplied to the lettuce.
  • the photon sensor 200 is installed below the lighting device 210 and at a place where it does not overlap with the shadow generated on the lettuce leaves, and detects the photon flux density [ ⁇ mol / m 2 s].
  • a pyranometer for detecting the amount of solar radiation [W / m 2 ] or an illuminance meter for detecting the illuminance [lux] may be provided.
  • the lighting device 210 includes a straight tube of a white light emitting diode (LED).
  • the straight tube of the white LED is configured to be turned on and off individually in a plurality of units.
  • the lighting device 210 is configured to be able to control the supply amount of light energy required for photosynthesis of lettuce in units of a plurality of straight tubes.
  • the lighting device 210 corresponds to an example of the light control device in the fourth embodiment.
  • the device control unit 323C is configured to light a part of the straight tube of the lighting device 210.
  • the device control unit 323C is configured to light all the straight tubes of the lighting device 210.
  • the device control unit 323C may control the operation of the lighting device 210 based on the detection result of the photon sensor 200.
  • the air conditioner 220 raises and lowers the room temperature in the cultivation facility.
  • the device control unit 323C controls the operation of the air conditioner 220 according to the control program of the fourth embodiment stored in the memory 310C based on the detection results of the room temperature sensor 110 and the water temperature sensor 190.
  • the heat energy generated from the lighting equipment 210 is used more for the vaporization of the evaporated water (that is, other than the increase in the sensible heat of the cultivation facility). Therefore, the sensible heat contribution is reduced.
  • the contribution of sensible heat decreases, the rise in room temperature in the cultivation facility is suppressed even if the amount of light supplied to the cultivation facility is increased.
  • a means for grasping the growth state of lettuce is required.
  • lettuce also absorbs more water as it grows. Therefore, also in the fourth embodiment, when the amount of absorbed water per lettuce strain exceeds a predetermined water amount threshold value, it is determined by the determination processing unit 321C that the contribution to sensible heat has decreased due to the growth of lettuce, and the initial stage Program 20C is updated to increase update 30C.
  • the water level sensor 153 installed in the lettuce cultivation tank is configured to be able to detect the first water level and the second water level lower than the first water level based on the presence or absence of energization between the three electrodes.
  • the equipment control unit 323C drives the pump 151 of the water supply device 150C to raise the water level of the lettuce cultivation tank to the first water level.
  • the water supply device 150C corresponds to an example of the first sensor.
  • the amount of water corresponding to the lowered water level in the lettuce cultivation tank corresponds to the amount of absorbed water of lettuce.
  • the rate of decrease in water level in the lettuce cultivation tank increases.
  • the number of times the pump 151 is driven per unit time increases. Therefore, the growth state of lettuce can be determined using the number of times the pump 151 is driven as a determination criterion.
  • the determination processing unit 321C states that lettuce grows and the sensible heat contribution decreases. judge.
  • the acquisition processing unit 322 acquires the increase update program 30C from the cultivation management server 10C through the communication network 90 and stores it in the memory 310, for example, RAM or EEPROM. After that, the device control unit 323C controls the lighting device 210 and the like according to the increase update program 30C. As a result, more light energy can be supplied to the lettuce and the photosynthesis of the lettuce can be increased.
  • the control program of the fourth embodiment stored in the memory 310C in advance includes the number of lettuce stocks in the cultivation facility. Using this number of strains, the amount of absorbed water per lettuce strain can be calculated from the number of times the pump 151 is driven in the water supply device 150C.
  • FIG. 9 and 10 are flowcharts schematically showing an example of the operation procedure of the cultivation control system 100C of the fourth embodiment, respectively.
  • the operation of FIG. 9 is executed, for example, every 10 seconds, and the operation of FIG. 10 is executed, for example, once a day.
  • step S1300 of FIG. 9 the determination processing unit 321C determines whether or not the pump 151 has been started to be driven.
  • the device control unit 323C may set a predetermined flag of the memory 310C each time the driving of the pump 151 is started.
  • the determination processing unit 321C can determine whether or not the pump 151 has started driving by checking the state of the predetermined flag.
  • step S1300 If the pump 151 has started to be driven (YES in step S1300), the process proceeds to step S1305. On the other hand, if the pump 151 is not started to be driven (NO in step S1300), the operation of FIG. 9 ends.
  • step S1305 the determination processing unit 321C integrates the number of pump drives stored in the memory 310C. After that, the operation of FIG. 9 ends.
  • step S1400 the determination processing unit 321C acquires the number of times the pump 151 is driven, which is stored in the memory 310C.
  • step S1405 the determination processing unit 321C determines whether or not the number of times the pump 151 has been driven exceeds the number threshold value. If the number of times the pump 151 is driven exceeds the number threshold value (YES in step S1405), the determination processing unit 321C determines that the sensible heat contribution has decreased, and the process proceeds to step S1020. On the other hand, if the number of times the pump 151 is driven is equal to or less than the number threshold value (NO in step S1405), the process proceeds to step S1410.
  • the process of step S1020 of FIG. 10 is the same as the process of step S1020 of FIG.
  • step S1410 the determination processing unit 321C resets the integrated value of the number of drives of the pump 151 stored in the memory 310C to zero. After that, the operation of FIG. 10 ends.
  • the growth state of lettuce can be grasped by determining whether or not the number of times the pump is driven, which represents the amount of absorbed water corresponding to the growth of lettuce, exceeds the number threshold value.
  • the number of times the pump is driven exceeds the number threshold, it is determined that the sensible heat contribution has decreased, and the lighting device 210 is controlled according to the increase update program 30C instead of the initial program 20C.
  • the increase update program 30C the operating specifications are set so that the amount of light of the lighting device 210 is larger than that in the initial program 20C. Therefore, the light energy supplied to the lettuce increases, so that the lettuce grows. Further promoted.
  • the increase update program 30C is used from the beginning, the heat generated from the lighting equipment 210 will be used to raise the sensible heat of the cultivation equipment, and the inside of the cultivation equipment will become hot. It is conceivable that the cooling capacity of the air conditioner 220 may be exceeded. On the other hand, in the fourth embodiment, since the initial program 20C is used at first, such a situation can be avoided.
  • the temperature rise in the cultivation facility is also suppressed to prevent the temperature rise exceeding the capacity of the air conditioner 220, or to reduce the load of the air conditioner 220 and the load of the lighting equipment 210. Is also connected. Therefore, it is possible to cultivate lettuce with optimum control according to the growth of lettuce, as in the first embodiment, while suppressing the electricity bill.
  • the amount of water absorbed by lettuce also differs depending on the cultivation environment such as room temperature and water temperature. Therefore, the determination processing unit 321C may change the number threshold value for determining the growth of lettuce according to the detection results of the room temperature sensor 110 and the water temperature sensor 190. For example, it is considered that the amount of water absorbed by lettuce changes depending on whether the room temperature is set to 20 [° C.] or 30 [° C.] by the operation of the air conditioner 220. Therefore, the determination processing unit 321C may increase the number-of-times threshold value as the room temperature rises. As a result, lettuce growth can be determined more accurately regardless of environmental factors.
  • FIG. 11 is a block diagram schematically showing the control configuration of the cultivation management server and the cultivation control system in the fifth embodiment.
  • the operation after switching from the initial program 20 to the increase update program 30 is different from that of the cultivation control system 100 of the first embodiment.
  • the cultivation control system 100D of the fifth embodiment includes a room temperature sensor 110 (corresponding to an example of the second sensor), a solar radiation sensor 120, a side window 130, a ceiling curtain 140, a water supply device 150, a drainage device 160, and a control device 300D. That is, the cultivation control system 100D of the fifth embodiment is configured in the same manner as the cultivation control system 100 of the first embodiment except that the control device 300D is provided instead of the control device 300. Further, the cultivation control system 100D is communicably connected to the cultivation management server 10D via the communication network 90. In this fifth embodiment, the cultivation control system 100D is installed in the vinyl house as in the first embodiment.
  • the control device 300D includes a memory 310D, a CPU 320D, and peripheral circuits (not shown).
  • the memory 310D (corresponding to an example of the storage unit) is composed of, for example, a semiconductor memory or the like.
  • the memory 310D includes, for example, ROM, RAM, EEPROM and the like.
  • the CPU 320D functions as a determination processing unit 321D, an acquisition processing unit 322D, and a device control unit 323D by operating according to the control program of the fifth embodiment stored in the memory 310D, for example, the ROM.
  • the cultivation management server 10D includes a hard disk or a semiconductor non-volatile memory that stores the initial program 20, the increase update program 30, and the decrease update program 40 in advance.
  • the reduction update program 40 the operating specifications of the ceiling curtain 140 are defined as in the initial program 20 and the increase update program 30.
  • the initial program 20 is pre-downloaded from the cultivation management server 10D to the control device 300D and stored in the memory 310D, for example, RAM or EEPROM.
  • the device control unit 323D of the CPU 320D controls the opening and closing of the ceiling curtain 140 according to the initial program 20D.
  • the increase update program 30 is acquired by the acquisition processing unit 322D and stored in the memory 310D, for example, RAM or EEPROM. Then, the device control unit 323D controls the opening and closing of the ceiling curtain 140 according to the increase update program 30.
  • the detection temperature detected by the room temperature sensor 110 exceeds a preset temperature threshold while the ceiling curtain 140 is opened by the device control unit 323D according to the increase update program 30, sunlight It can be determined that the sensible heat contribution, which indicates the degree to which the thermal energy in the energy is used to increase the sensible heat of the vinyl house, is higher than expected. In that case, it is desirable to switch to a control program in which the operating specifications of the ceiling curtain 140 are defined so that the amount of light supplied from the solar energy into the greenhouse is reduced.
  • the ceiling curtain 140 is closed and 400 [W / m 2].
  • the operating specifications of the ceiling curtain 140 are defined so that the ceiling curtain 140 is opened when the value becomes as follows.
  • the acquisition processing unit 322D is transmitted from the cultivation management server 10D through the communication network 90.
  • the reduction update program 40 is acquired, and the acquired reduction update program 40 is stored in the memory 310D, for example, RAM or EEPROM.
  • the device control unit 323D controls the opening and closing of the ceiling curtain 140 according to the reduction update program 40.
  • FIG. 12 is a flowchart schematically showing an example of an operation procedure of the cultivation control system 100D of the fifth embodiment. The operation of FIG. 12 is executed, for example, every 10 seconds.
  • step S1500 the determination processing unit 321D determines whether or not the increase update program 30 is operating.
  • the device control unit 323D may set a predetermined flag of the memory 310D when the operation of the increase update program 30 is started. By confirming the state of the predetermined flag, the determination processing unit 321D can determine whether or not the increase update program 30 is operating.
  • step S1500 If the increase update program 30 is operating (YES in step S1500), the process proceeds to step S1505. On the other hand, if the initial program 20 is operating (NO in step S1500), the operation of FIG. 12 ends.
  • step S1505 the determination processing unit 321D acquires the room temperature detected by the room temperature sensor 110, and determines whether or not the acquired room temperature exceeds the temperature threshold value. .. If the room temperature exceeds the temperature threshold (YES in step S1505), the process proceeds to step S1510. On the other hand, if the room temperature is equal to or lower than the temperature threshold value (NO in step S1505), the operation of FIG. 12 ends.
  • step S1510 the acquisition processing unit 322D acquires the reduction update program 40 from the cultivation management server 10D, and uses the acquired reduction update program 40 in the memory 310D, for example, RAM. Or save it in EEPROM. After that, the operation of FIG. 12 ends.
  • the fifth embodiment a part of the plant to be cultivated withers for some reason, the amount of transpiration water in the cultivation facility decreases, and the room temperature in the greenhouse sets the temperature threshold. Even when it is determined that the sensible heat contribution has increased, the temperature rise inside the greenhouse can be suppressed. In addition, it can respond even when it is suddenly exposed to unseasonably high temperature weather conditions.
  • the reduction update program 40 of the cultivation management server 10D is applied to the ceiling curtain 140 of the first embodiment, but the ceiling curtain 140 of the second embodiment, Alternatively, it may be applied to the ceiling curtain 140 of the third embodiment.
  • the reduction update program 40 of the cultivation management server 10D in the fifth embodiment may be applied to the lighting equipment 210 of the fourth embodiment.
  • the detection temperature detected by the room temperature sensor 110 is a preset temperature threshold. When it exceeds, it can be determined that the sensible heat contribution, which indicates the degree to which the thermal energy is used to increase the sensible heat of the cultivation facility, is higher than expected. In that case, it is desirable to switch to a control program in which the operating specifications of the lighting device 210 are defined so that the amount of light supplied from the lighting device 210 is reduced.
  • a reduction update program for reducing the number of lighting devices 210 is acquired from the cultivation management server 10D through the communication network 90. It may be configured to be.
  • the threshold value of the amount of solar radiation for opening and closing the ceiling curtain 140 is different between the initial program 20 and the increase update program 30.
  • the light amount of the lighting device 210 is different between the initial program 20C and the increase update program 30C.
  • the increase update programs 30 and 30C are stored in advance in the cultivation management server, and the initial programs 20 and 20C are updated to the increase update programs 30 and 30C, respectively, as needed. It is configured to.
  • the amount of water supplied at one time is increased in the increase update programs 30 and 30C as compared with the initial programs 20 and 20C.
  • the increase update programs 30 and 30C may increase the number of times of water supply per day.
  • the control time of the device may be changed according to the time of sunrise and sunset.
  • the ceiling curtain 140 is not opened for 2 hours from sunrise, but in the increase update program 30, the ceiling curtain 140 may be opened in 1 hour from sunrise.
  • the side window 130 is configured to be opened when the temperature detected by the room temperature sensor 110 exceeds a temperature threshold value (for example, 25 [° C.]). Good. Thereby, the room temperature can be lowered.
  • This temperature threshold value may be the same in the initial program 20 and the increase update program 30.
  • the temperature threshold does not need to be changed.
  • the ceiling curtain 140 if the ceiling curtain 140 is closed in order to lower the room temperature, sunlight is blocked. As described above, since there is a trade-off parameter for opening and closing the ceiling curtain 140, the threshold value for opening and closing the ceiling curtain 140 is changed between the initial program 20 and the increase update program 30.
  • the switching from the initial program 20 to the increase update program 30 may be performed on or after the day following the day when the increase update program 30 is acquired. Further, the cultivation manager may artificially perform the download operation for acquiring the increase update program 30 and the operation for switching from the initial program 20 to the increase update program 30.
  • step S1015 of FIG. 2 when YES is set a plurality of times in step S1015 of FIG. 2, step S1105 of FIG. 5, step S1210 of FIG. 7, and step S1405 of FIG. You may proceed to the step of acquiring the update program 30 for use.
  • the cultivation management server 10 may store a second increase update program in addition to the increase update program 30.
  • the threshold value of the amount of solar radiation for opening and closing the ceiling curtain 140 may be set to, for example, 800 [W / m 2 ]. Further, in addition to the water amount threshold value, a second water amount threshold value larger than the water amount threshold value may be set. Then, after the initial program 20 is switched to the increase update program 30, when the determination processing unit 321 further determines that the absorbed water amount exceeds the second water amount threshold value, the acquisition processing unit 322 increases the second.
  • the update program for use may be obtained from the cultivation management server 10.
  • the device control unit 323 may control the opening and closing of the ceiling curtain 140 according to the second increase update program.
  • the cultivation management server 10 may include a larger number of water amount threshold values and an increase update program in addition to the second water amount threshold value and the second increase update program. As a result, more sunlight can be taken in in response to the further growth of the plant body.
  • the increasing update program 30 corresponds to an example of the first program
  • the second increasing update program corresponds to an example of the second program.
  • the acquisition processing unit 322 stores the initial program 20 before the update, which has been used up to that point, in the memory 310. , 310A, 310B, 310C may be erased.
  • the acquisition processing unit 322D stores the increase update program 30 before the update that has been used up to that point in memory. It may be erased from 310D.
  • the acquisition processing unit 322 uses the memory 310 or the like for the initial program 20 before the update even after switching to the update program 30 for increase. It may be configured to erase the programs sequentially by setting a criterion such as erasing the first program after the three programs are stored. As a result, even if the control program is updated frequently, a free area such as the memory 310 can be secured, and a situation in which the control program cannot be updated due to insufficient capacity can be prevented.
  • the cultivation management server 10 may store a plurality of control programs in a library.
  • the acquisition processing unit 322 may select and acquire a necessary control program according to the cultivation time and the cultivation method.
  • the control program stored in the cultivation management server 10 may be configured to be freely modifiable by the cultivation manager.
  • the cultivation management server 10 may be configured so that a control program newly created by the cultivation manager can be additionally stored.
  • the cultivation control technique according to the present disclosure is particularly useful for a system for cultivating plants.

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