JP7437062B2 - Growth facility control system - Google Patents

Description

The present disclosure relates to technology for controlling the growth environment of living things.

BACKGROUND ART Growing various living things in spaces where the environment can be adjusted has traditionally been practiced in fields such as agriculture, forestry, fishing, and even livestock farming. Examples include growing and breeding vegetables and mushrooms in plastic greenhouses, cultivating fish, crustaceans, and shellfish in cages, and raising chickens and collecting eggs in large-scale facilities. In recent years, various technologies have been studied that combine sensors, air conditioners, and the like to provide various support for living environments for living things. For example, Patent Document 1 discloses a technology that attempts to predict the temperature of farmland and support cultivation. Furthermore, Patent Document 2 proposes control such as installing a sensor or the like in a greenhouse in which plants are grown, and using an air conditioner to lower the temperature when the temperature is high, in order to bring the cultivation status of plants closer to the target. ing. In addition, in this specification, "growth" is used to indicate a concept that includes "growth" of an animal.

Japanese Patent Application Publication No. 2018-170971 JP 2019-170359 Publication

The growth of these organisms is rarely done in completely artificial spaces such as factories, but is often done by incorporating the outside environment. This is because, structurally, it is difficult to maintain a constant growing environment in greenhouses, etc., ignoring seasonal temperature fluctuations, and if you try to maintain a constant growth environment, it will cost a huge amount of money, so it is not suitable for agriculture. This is because it often impairs the economic efficiency of Therefore, when controlling the temperature of the growing environment to the appropriate temperature for growth, do not rely solely on air conditioners, but also raise or lower the temperature by opening windows and letting in outside air, or use sunlight. This is done to raise the temperature inside the greenhouse. For this reason, controlling the growing environment becomes extremely complicated, and with conventional techniques, it is difficult to predict the growing environment such as temperature and humidity with high accuracy and control it as desired. Furthermore, if the control of the growing environment was automated with low accuracy, the growing environment would deviate from the appropriate environmental range, which could even impede the growth of living organisms.

The present disclosure can be realized as the following forms or application examples.

(1) A first aspect of the present disclosure is to adjust the environmental state of a growing facility that includes an internal space in which living things are grown and a plurality of types of changing devices that change at least one physical quantity representing the environmental state of the internal space. This is an embodiment of a growing facility control system. This growth facility control system includes a measurement unit that is provided in at least the internal space of the growth facility and measures the at least one physical quantity, and a measurement result that includes time-series data of the at least one physical quantity acquired from the measurement unit. and the relationship between the time series data of at least one physical quantity in the corresponding facility corresponding to the growing facility and the time series data of the drive amount of the plurality of types of change devices in the corresponding facility, which are obtained in advance , a prediction unit that predicts an environmental state that will occur in the internal space of the growing facility after a predetermined time from the current time when the prediction unit operates; A control mode with prediction that brings the environmental state of the growing facility closer to the target state; and a control mode without prediction that brings the environmental state closer to the target state by controlling the plurality of types of changing devices through feedback control without using the prediction results. control mode as an operation mode, and a management device including a switching unit that executes switching of the operation mode. The corresponding facility corresponding to the growing facility includes at least one of the facilities having the commonality that allows machine learning between the growing facility and the environment of the growing facility .

FIG. 1 is an explanatory diagram schematically showing a growth facility control system in the first embodiment. FIG. 2 is an explanatory diagram showing the configuration of a measurement node. An explanatory diagram showing an example of a data table. FIG. 2 is an explanatory diagram showing the configuration of a control node. An explanatory diagram showing an example of a command table. FIG. 6 is an explanatory diagram showing an example of the transition of the driving state of the changing device. FIG. 2 is an explanatory diagram showing an example of a user interface displayed on a terminal device in manual control mode. Flowchart showing the operation of the manual control unit. FIG. 3 is an explanatory diagram showing an example of a user interface displayed on a terminal device in a non-prediction control mode. 5 is a flowchart showing the operation of a non-prediction control unit. FIG. 3 is a process diagram showing a process of preparing a machine-learned model and configuring a prediction control unit. An explanatory diagram of a learning model for training. An explanatory diagram explaining the collection of teacher data. A flowchart showing the contents of supervised machine learning. An explanatory diagram showing an example of machine learning. An explanatory diagram showing the state of control using a machine learned model. 5 is a flowchart showing the processing of a prediction control unit. FIG. 3 is an explanatory diagram illustrating a mechanism for determining a drive pattern. 5 is a flowchart showing the contents of operation mode switching processing. FIG. 7 is a block diagram showing the configuration of a prediction control unit of a management device according to a second embodiment. Flowchart showing the process of additional learning of a machine learned model.

A. First embodiment:
(A1) Overall configuration of growth facility control system 100:
FIG. 1 is an explanatory diagram schematically showing a growing facility control system 100. As shown in FIG. 1, the growth facility control system 100 controls the environmental state of an internal space 201 of a growth facility 200 for growing organisms. Growing living things means growing plants such as vegetables and fruits, growing fungi such as mushrooms, raising animals such as chickens and cows, and cultivating aquatic organisms such as seafood and seaweed. The meaning includes that. In this embodiment, the growing facility 200 is a vinyl greenhouse that has a field inside for cultivating plants such as vegetables and fruits.

In addition to the above-mentioned growing facility 200, the growing facility control system 100 includes multiple types of change devices 300, a control node 301, multiple types of sensors 400, a measurement node 401, a communication device 500, and a management device 101. , and a terminal device 600.

The plurality of types of changing devices 300 are provided in the internal space 201 of the growing facility 200. The plurality of types of changing devices 300 each change the environmental state of the internal space 201. In this embodiment, the plurality of types of changing devices 300 include a heating device 310, a cooling device 315, a humidifying device 320, a drying device 325, a carbon dioxide generator 330, a ventilation device 340, and a circulation device 345. , a shading device 350, a window opening/closing device 355, an irrigation device 360, and a soil heating device 365. The various change devices 310 to 365 described above are driven under the control of the control node 301. The configuration of the control node 301 will be described later. Note that some of the various changing devices 310 to 365 described above may be provided outside the growing facility 200 instead of in the internal space 201 of the growing facility 200.

Heating device 310 provides heat to internal space 201 of growth facility 200 . As the heating device 310, for example, a heater that generates warm air can be used. The cooling device 315 removes heat from the internal space 201 of the growth facility 200 . In this embodiment, the heating device 310 operates by on/off control. As the cooling device 315, for example, a heat pump type air conditioner that discharges the amount of heat in the internal space 201 of the growth facility 200 to the outside of the growth facility 200 can be used. In this embodiment, the cooling device 315 operates by on/off control. Note that the heating device 310 and the cooling device 315 may be configured as one air conditioner.

Humidifier 320 applies water vapor to internal space 201 of growth facility 200 . For example, a mist generator that emits water vapor at a constant amount can be used as the humidifier 320. In this embodiment, the humidifier 320 operates by on/off control. The drying device 325 removes water vapor from the interior space 201. The drying device 325 removes water vapor at a constant removal amount, for example. In this embodiment, the drying device 325 operates by on-off control.

The carbon dioxide generator 330 supplies carbon dioxide to the internal space 201 of the growth facility 200 . As the carbon dioxide generator 330, for example, a boiler that operates under on-off control and generates carbon dioxide at a constant amount by burning heavy oil can be used.

The ventilation device 340 exchanges gas between the interior space 201 of the growth facility 200 and the outside of the growth facility 200. As the ventilation device 340, for example, a ventilation fan provided on the side wall surface of the growth facility 200 can be used. In this embodiment, the ventilation device 340 operates by on-off control. The circulation device 345 circulates gas within the internal space 201 of the growth facility 200. For example, a circulation fan provided in the internal space 201 can be used as the circulation device 345. In this embodiment, the circulation device 345 operates by on/off control.

The shading device 350 changes the amount of sunlight incident on the internal space 201 of the growth facility 200. The light shielding device 350 opens and closes a light shielding curtain provided in the growth facility 200, for example. In this embodiment, the light shielding device 350 operates by on/off control.

The window opening/closing device 355 opens and closes windows provided in the growth facility 200. The window opening/closing device 355 independently controls, for example, the amount of opening/closing of the skylight and the amount of opening/closing of the side window. The opening/closing amount can be controlled in increments of 1/6, with 6/6 being fully open and 0/6 being fully closed. Note that the window opening/closing device 355 may perform on/off control, that is, control the skylight etc. to be fully opened and fully closed, or may be capable of controlling the degree of opening more finely.

The irrigation device 360 supplies water to the culture soil provided in the internal space 201 of the growth facility 200. For example, a sprinkler can be used as the irrigation device 360. In this embodiment, the irrigation device 360 operates by on-off control. The soil heating device 365 heats the culture soil provided in the internal space 201 of the growth facility 200. As the soil heating device 365, for example, a heating wire buried in the culture soil can be used. In this embodiment, the soil heating device 365 operates by on/off control.

The growing facility control system 100 does not need to include all of the various change devices 310 to 365 described above. However, the growing facility control system 100 includes at least two of the various change devices 310 to 365 described above. In the present embodiment, the heating device 310 and the like have been described as being controlled to be turned on and off, but these devices may be capable of being controlled in two or more stages such as strength or weakness when on. The various change devices 310 to 365 may be simply referred to as the change device 300 when they are handled together or when there is no need to distinguish between the types of devices.

Multiple types of sensors 400 are provided in the internal space 201 of the growth facility 200. The multiple types of sensors 400 are used to measure multiple types of physical quantities that reflect the environmental conditions of the interior space 201, respectively. In this embodiment, the plurality of types of sensors 400 include a temperature sensor 410 that measures the temperature of the internal space 201, a humidity sensor 420 that measures the humidity of the internal space 201, and a carbon dioxide sensor that measures the carbon dioxide concentration of the internal space 201. a carbon sensor 430 , a ventilation sensor 440 that measures the ventilation amount of gas exchanged between the interior space 201 and the outside, a circulation amount sensor 445 that measures the amount of gas circulation within the interior space 201 , and the interior space 201 . A sunlight sensor 450 that measures the amount of sunlight incident on the soil, a soil moisture sensor 460 that measures the amount of moisture contained in the culture soil provided in the internal space 201, and a soil moisture sensor 460 that measures the temperature of the culture soil provided in the internal space 201. A soil temperature sensor 465 for measuring is included. Data representing physical quantities measured by the various sensors 410 to 465 described above is transmitted to the measurement node 401. The configuration of the measurement node 401 will be described later.

The growing facility control system 100 does not need to include all of the various sensors 410 to 465 described above. However, the growing facility control system 100 includes at least two of the various sensors 410 to 465 described above. A sensor for measuring the environmental condition outside the growing facility 200 may be provided around the growing facility 200 . For example, a temperature sensor for measuring the air temperature around the growing facility 200, a humidity sensor for measuring the humidity around the growing facility 200, a wind direction sensor for measuring the wind direction around the growing facility 200, A wind speed sensor may be provided to measure the wind speed around the area. Data may also be obtained from a site that aggregates weather conditions, such as AMeDAS.

The communication device 500 is placed within the growing facility 200 or near the growing facility 200 . The communication device 500 is configured to be able to communicate with the management device 101, the control node 301, and the measurement node 401. In this embodiment, the communication device 500 is configured to communicate with the management device 101 via the Internet, and the communication device 500 is configured to communicate with the control node 301 and the measurement node 401 by short-range wireless communication. Of course, these communications may be wired or wireless, and the communication protocols are not limited to TCP/IP, and various other protocols may be employed.

The management device 101 is located in a building of a management company that manages the growing facility control system 100. The management device 101 is composed of a computer including a CPU 10, a memory 20, and an input/output interface 30. Note that the management device 101 may be provided near the growing facility 200.

The management device 101 includes a manual control section 110, a non-prediction control section 120, a prediction control section 130, a writing section 140, a communication section 150, and a switching section 160. The specific configuration of the management device 101 will be described later.

The writing unit 140 has a data table 142 and a command table 141. In the data table 142, time series data of various physical quantities measured by the various sensors 410 to 465 described above are written. In the command table 141, drive patterns of the various change devices 310 to 365 described above are written.

The switching unit 160 switches the operation mode of the management device 101. In this embodiment, the management device 101 has a manual control mode, a control mode without prediction, and a control mode with prediction as operation modes. The manual control mode is an operation mode in which the manual control section 110 writes a drive pattern into the command table 141 of the writing section 140. The non-prediction control mode is an operation mode in which the non-prediction control unit 120 writes a drive pattern in the command table. The prediction control mode is an operation mode in which the prediction control unit 130 writes a drive pattern in the command table. The switching unit 160 switches the operation mode of the management device 101 to one of a manual control mode, a control mode without prediction, and a control mode with prediction, in response to a user's request. In this embodiment, the switching unit 160 may automatically switch the operation mode without depending on a user's request when a predetermined condition is met.

The terminal device 600 is configured to be able to communicate with the management device 101. In this embodiment, the terminal device 600 communicates with the management device 101 via the Internet. As the terminal device 600, for example, a smartphone, a tablet, a notebook PC, or a desktop PC can be used. The terminal device 600 is operated by a user who grows organisms at the growing facility 200.

FIG. 2 is an explanatory diagram showing the configuration of the measurement node 401. The measurement node 401 is composed of a computer including a CPU 402, a memory 403, and an input/output interface 404. The various sensors 410 to 465 described above are connected to the measurement node 401. The CPU 402 of the measurement node 401 acquires physical quantity data from various sensors 410 to 465 and stores it in the memory 403. The memory 403 has, for example, a ring buffer, and the latest data acquired from various sensors 410 to 465 is overwritten by the oldest data stored in the ring buffer. The CPU 402 transmits the data stored in the memory 403 to the management device 101 via the communication device 500 at predetermined time intervals, such as every 5 minutes, for example. This time interval is set to an interval at which the data stored in the ring buffer is not overwritten before being sent to the management device 101. The data sent to the management device 101 is written to the data table 142 of the writing unit 140.

FIG. 3 is an explanatory diagram showing an example of the data table 142. Data transmitted from the measurement node 401 is written into the data table 142. As shown in FIG. 3, the data table 142 includes, from the left, the times at which physical quantities were measured by various sensors 410 to 465, the temperature measured by temperature sensor 410, and the times measured by humidity sensor 420. The soil temperature measured by the soil temperature sensor 465, and the carbon dioxide concentration measured by the carbon dioxide sensor 430 are shown. The humidity measured by the humidity sensor 420 is expressed in relative humidity. The carbon dioxide concentration measured by carbon dioxide sensor 430 is expressed in parts per million (ppm). In the data table 142, physical quantity data is displayed in chronological order, with the latest data at the top. Note that in this embodiment, the information once written to the data table 142 can be read from any of the control units 110, 120, and 130 in the management device 101, and the user can also You can view it anytime.

FIG. 4 is an explanatory diagram showing the configuration of the control node 301. The control node 301 is composed of a computer including a CPU 302, a memory 303, and an input/output interface 304. The various change devices 310 to 365 described above are connected to the control node 301. The control node 301 refers to the command table 141 of the writing unit 140 via the communication device 500 at predetermined time intervals such as one-minute intervals, and executes various drive patterns according to the drive pattern written in the command table 141. The changing devices 310 to 365 are operated.

FIG. 5A is an explanatory diagram showing an example of the command table 141. In the example shown in FIG. 5A, the command table 141 is provided with columns for writing a control number, a control device, a control flag, a control type, and a control time in order from the left. The control ID is written in the control number column. In the control equipment column, the name of the growing facility 200 and the names of various change devices 300 controlled under the management of the management device 101 are written. In this example, a heating device 310 and a ventilation device 340 provided in a growing facility 200 named “House 2” are controlled under the management of the management device 101.

The drive patterns of the various changing devices 300 are written in the control flag column. In this example, the drive pattern of the heating device 310 and the ventilation device 340 is represented by a two-digit number. The first digit of the number indicates whether the heating device 310 is on or off, and the second digit of the number indicates whether the ventilation device 340 is on or off. On/off is represented by "1" and "0", with "1" meaning on and "0" meaning off.

The control type column indicates which of the manual control section 110, the non-prediction control section 120, and the prediction control section 130 has executed writing of the drive pattern in the command table 141. In this example, when the drive pattern is written by the manual control section 110, it is expressed as "A", and when the drive pattern is written by the non-prediction control section 120, it is expressed as "B". , when the drive pattern is written by the prediction control unit 130, it is expressed as "C". The control time column displays the time when the drive pattern was written to the command table 141. The driving patterns of the various change devices 300 are written into the command table 141 at predetermined time intervals, such as every 5 minutes, for example. Note that in this embodiment, the information once written to the command table 141 can be read from any of the control units 110, 120, and 130 in the management device 101, and the user can use the terminal device 600 to It can be viewed at any time.

FIG. 5B is an explanatory diagram showing an example of the transition of the driving state of each changing device 300. The figure shows, from left to right, the time, on/off of the heating device 310, on/off of the carbon dioxide generator 330, and the amount of opening/closing of the skylight and side window opened/closed by the window opening/closing device 355. The control node 301 controls the various change devices 300 according to the latest drive pattern by referring to the command table 141. Therefore, when the drive pattern newly written in the command table 141 is changed from the previous drive pattern, the control node 301 changes the drive states of the various changing devices 300. The writing unit 140 organizes the commands written in each column of the command table 141 by the control units 110, 120, and 130 in the management device 101 in the format shown in FIG. 5B and holds them as the current drive pattern. , each control unit 110, 120, 130 in the management device 101 can know the current drive pattern by reading this.

(A2) Overview of manual control and non-predictive control:
FIG. 6 is an explanatory diagram showing an example of the user interface UI1 displayed on the terminal device 600 in the manual control mode. The user interface UI1 is provided with an operation mode selection area R1, a measured value display area R2, a driving state selection area R3, and an information display area R4. The operation mode selection area R1 is provided with a button for switching the operation mode. Measured values measured by various sensors 410 to 465 are displayed in the measured value display area R2. In the example shown in FIG. 6, the measured value display area R2 displays, in order from the top, the temperature measured by the temperature sensor 410, the humidity measured by the humidity sensor 420, and the temperature measured by the soil temperature sensor 465. , and the carbon dioxide concentration measured by the carbon dioxide sensor 430. The drive state selection area R3 is provided with buttons for switching the drive states of the various changing devices 310 to 365. In the example shown in FIG. 6, the drive state selection area R3 includes, from the top, a button for selecting on/off of the heating device 310, a button for selecting on/off of the carbon dioxide generator 330, and a button for selecting on/off of the ventilation device. 340 buttons for selecting the opening degree of the skylight and side window. Various information is displayed in the information display area R4. In the example shown in FIG. 6, a prediction error of the temperature inside the growing facility 200 predicted by the prediction unit 90 described later is displayed.

Next, the operation of the manual control section 110 will be explained. As described above, the manual control unit 110 is realized by the CPU 10 executing a manual control program stored in the memory 20. FIG. 7 is a flowchart showing the processing content executed by the CPU 10. This process is repeatedly executed at predetermined time intervals, such as every 5 minutes, when the management device 101 is operating in the manual control mode, thereby realizing the function of the manual control unit 110. First, in step S110, the manual control unit 110 acquires a drive pattern input into the terminal device 600 by the user. In step S120, the manual control unit 110 writes the drive patterns of the various change devices 310 to 365 into the command table 141. Thereafter, manual control unit 110 ends this process. The manual control unit 110 repeatedly executes this process until the operation mode of the management device 101 is switched to the control mode without prediction or the control mode with prediction.

FIG. 8 is an explanatory diagram showing an example of the user interface UI2 displayed on the terminal device 600 in the non-prediction control mode. The user interface UI2 is provided with an operation mode selection area R1, a measured value display area R2, an information display area R4, a target value input area R5, and a drive state display area R6. The configuration of the operation mode selection area R1, measured value display area R2, and information display area R4 is the same as the operation mode selection area R1, measured value display area R2, and information display area R4 in the user interface UI1 in the manual control mode. The same is true. The target value input area R5 is provided with columns for inputting target values of each physical quantity. In the example shown in FIG. 8, the target value input area R5 includes, from the top, the target value of temperature measured by temperature sensor 410, the target value of humidity measured by humidity sensor 420, and the target value of soil temperature sensor 465. The target value of the temperature measured by the carbon dioxide sensor 430 and the target value of the carbon dioxide concentration measured by the carbon dioxide sensor 430 are shown. In the drive state display area R6, the drive states of the various change devices 310 to 365 are displayed. The driving states of the various changing devices 310 to 365 displayed in the driving state display area R6 are displayed using the latest driving pattern written in the command table 141.

Next, the operation of the no-prediction control unit 120 will be explained. As already explained, the non-prediction control unit 120 is realized by the CPU 10 executing a non-prediction control program stored in the memory 20. FIG. 9 is a flowchart showing the processing content executed by the CPU 10. This process is repeatedly executed at predetermined time intervals, such as every 5 minutes, when the management device 101 is operating in the non-prediction control mode, thereby realizing the function of the non-prediction control unit 120. First, in step S210, the non-prediction control unit 120 obtains target values of various physical quantities input by the user into the terminal device 600. Next, in step S220, the non-prediction control unit 120 obtains the measured values of various physical quantities measured by the various sensors 410 to 465. In this embodiment, the non-prediction control unit obtains measured values of various physical quantities by referring to the data table 142.

In step S230, the non-prediction control unit 120 determines drive patterns for the various change devices 310 to 365 by comparing target values and measured values of various physical quantities. For example, the non-prediction control unit 120 determines whether to turn on or off the heating device 310 by comparing a target temperature value and a measured value, and determines whether to turn on or off the humidifying device 320 by comparing a target value and a measured value for humidity. , and determines whether to turn on or off the carbon dioxide generator 330 by comparing the target value and the measured value of the carbon dioxide concentration. In step S240, the non-prediction control unit 120 writes the drive pattern into the command table 141. Thereafter, the no-prediction control unit 120 ends this process. The non-prediction control unit 120 repeatedly executes this process until the operation mode of the management device 101 is switched to the manual control mode or the prediction control mode.

(A3) Overview of control with prediction:
Next, the configuration and function of the prediction control unit 130 will be explained. As already explained, the prediction control unit 130 is realized by the CPU 10 executing a prediction control program stored in the memory 20. The processing of the CPU 10 using a flowchart will be described later. The prediction control unit 130 predicts the future internal environment based on the past drive amounts of the various change devices 310 to 365 in the growth facility 200 and the measured values of physical quantities such as temperature measured by the various measurement units 400. The driving amounts of the various changing devices 310 to 365 are controlled. In such processing, a portion that predicts the future internal environment of the growing facility 200 is referred to as a prediction section 90.

The driving amounts of the various changing devices 310 to 365 used for prediction are as follows:
(A) Turning on/off of various changing devices 310 to 365;
(B) Power when on,
(C) If the opening/closing amount can be adjusted like the window opening/closing device 355, the adjustment amount;
Including etc. The combination of these driving amounts of the various changing devices 310 to 365 will be referred to as a driving pattern hereinafter. This prediction control unit 130 has a machine-learned model using a neural network inside, and uses this machine-learned model for a predetermined period of time from the current point in time when two or more change devices 300 are driven in a plurality of drive patterns. A physical quantity such as the temperature of the internal space 201 of the growth facility 200 after (5 minutes in this embodiment) is predicted for each drive pattern. Then, the various change devices 310 to 365 are driven in a drive pattern that brings the predicted physical quantity closest to the target value.

Since the predictive control unit 130 requires a machine-learned model for its operation, it is necessary to perform machine learning in advance. Therefore, the steps required to realize the function of the prediction control unit 130 will be explained using FIG. 10.

First, a training learning model TTM is prepared (step T1), and teacher data TD is further prepared (step T2). An example of a training learning model TTM that enables prediction is shown in FIG. A machine learned model 701 is generated by subjecting the training learning model TTM of this embodiment to machine learning using teacher data, which will be described later. Once learning is performed and a machine learned model 701 is obtained, past drive patterns and time series data of measured values are input to this machine learned model 701, and from this and the drive pattern at that point. , it becomes possible to predict physical quantities after a predetermined time. In the following description of this embodiment, the time series data etc. are data every 5 minutes, and the predicted physical quantity is the estimated value Tm of the temperature inside the growth facility 200 detected by the temperature sensor 410 of the measurement unit 400. be. Even if the same training learning model TTM is used, the prediction results obtained as a result of learning are different. Therefore, a model for which supervised machine learning has been completed is distinguished from the training learning model TTM as a machine learned model 701.

The training learning model TTM includes a multi-layer neural network inside. The input side of the neural network is configured as an RNN (Recurrent Neural Network). As illustrated, the RNN includes an input layer LR1, a middle layer LR2, and an output layer LR3, and the middle layer LR2 has an autoregressive structure. An autoregressive structure is a neural network that once processes data that is read in chronological order, and then re-inputs and processes it recursively when the next temporally succeeding data is input. The second half of the training learning model TTM includes two or more processing layers LL1 to LLn that predict the temperature Ths after 5 minutes when controlled by the drive pattern from the output from the RNN and the actual drive pattern. The neural network includes a plurality of nodes in each layer LR1, LR2, LR3 of the RNN, and subsequent stages LL1 to LLn, and includes weighted links between nodes in adjacent layers. “Learned” means that this weighting setting has been completed.

The data to be learned by this training learning model TTM is called teacher data TD. Supervised means that the results of learning using that data are provided as labels. The training data for supervised machine learning includes time-series data of past driving patterns and measured values, data of the next driving pattern, and labels corresponding to these data of the actual temperature after a predetermined time. data Tn. In machine learning, when a large number of such teacher data are prepared and each teacher data is input into the training learning model TTM, the output value Tm of the output node op1 of the final output layer LLn matches the actual temperature data Tn. This refers to repeating the setting of weighting between each layer so that the Generally, the value appearing at the output node op1 of the processing layer LLn is normalized between the value 0 and the value 1. Therefore, if the temperature data Tn included in the teacher data TD is in the range of 18°C to 30°C, for example, if the temperature data Tn included in the teacher data TD is 18°C, the output node op1 has a value 0 and the temperature data Tn included in the teacher data TD is 30° C., the weighting between each layer is set so that the output node op1 has a value of 1. This is the learning process (step 3) of the training learning model TTM.

As the teacher data TD for learning, data of control actually performed in an existing growing facility is used. FIG. 12 is an explanatory diagram showing how the management device 101 that acquires data from an existing nursery facility prepares teacher data TD. As shown in the figure, the management device 101 has a plurality of growing facilities 202 to 207 installed in district A, and a plurality of growing facilities 212 to 212 installed in district B, regardless of whether it is equipped with the prediction control unit 130 or not. 217 is connected, and the internal environment of each of the growing facilities 202 to 217 is controlled. For this reason, the management device 101 collects time-series data of drive patterns and measurement values from the plurality of growth facilities 202 to 217 every five minutes. The management device 101 performs manual control or automatic control without prediction using this time series data, and acquires and stores the time series data. This time-series data is collected in a server 700 connected to the management device 101, where it is aggregated as teacher data TD and stored in a storage device 710. Note that the management device 101 may be provided for each growth facility. In this case, the server 700 may be configured to collect time-series data from multiple management devices.

The teacher data TD prepared in the storage device 710 is used for learning the training learning model TTM. What is learned here is a learning model for the growing facility 200 that is the object of control. As illustrated, in addition to the newly established growing facility 200, there are existing growing facilities 202 to 217. These existing growing facilities 202 to 217 may exist in the same region A as the new growing facility 200, or may exist in a different region B. In this embodiment, control data for the growing facilities 202 to 207 existing in the same area A as the new growing facility 200 is used as the teacher data TD. Of course, it is also possible to use data from other growing facilities 212 to 217 in District B. Furthermore, if the growing facility 200 is already established and has conventionally been controlled by the manual control unit 110 and the non-prediction control unit 120, and if a new prediction control unit 130 is introduced, the storage device 710 for the growing facility 200 is Only the time-series data stored in may be used as the teacher data TD.

The details of the supervised machine learning process (step T3) performed after preparing the training learning model TTM and the teacher data TD are shown in the flowchart of FIG. The supervised machine learning process will be explained based on this flowchart. This machine learning is performed by a dedicated computer provided in server 700, which is different from management device 101.

In the training learning model TTM, before learning is performed, weights set for connections between nodes in each layer are uniform values or random values. When the process shown in FIG. 13 is started, a process of acquiring teacher data TD prepared in advance in the storage device 710 is performed (step S500). As described above, by the time this process is started, time-series data acquired from a plurality of actual growing facilities 202 and the like existing in area A have been collected as teacher data TD. The teacher data TD is time series data including drive patterns and measured values. In this embodiment, the drive pattern is a combination of drive amounts of the various change devices 310 to 365, and the measured values are all measured values such as temperature, humidity, CO2 concentration, etc. measured by the measuring unit 400. .

After acquiring this teacher data TD, machine learning processing using the training learning model TTM (step S510) is subsequently performed until generalization is completed (step S520). A machine learned model 701 is generated by applying teacher data TD to the training learning model TTM and performing machine learning, so this is finally saved as a machine learned model for the growing facility 200 (step S530). The stored machine learned model 701 is stored in the memory 20 of the management device 101 of the growing facility control system 100 so that it can be referenced by the prediction control unit 130 via a network or directly.

After the weighting has been corrected the predetermined number of times for all the teacher data TD as described above, it is determined whether the generalization of the training learning model TTM has been completed (step S520). That is, the degree to which the input and output of the training learning model TTM match is obtained using the teacher data TD, and the degree of disagreement, that is, the error between the teacher data and the output of the training learning model TTM, is calculated as an error. It is evaluated using a function, and if the error is less than a predetermined threshold, it is determined that generalization is complete.

If it is not determined that generalization is complete, the machine learning process (step S510) is repeated. In other words, the process of further modifying the weights is performed, and the calculation and evaluation of the learning error using the error function are repeated. When it is determined that generalization is completed, a trained machine learned model 701 is generated. By storing this machine learned model 701 in the memory 20 of the management device 101 (step S530), the prediction control unit 130 is configured (step T4). As described above, the machine learned model 701 is generated, and the prediction control unit 130 is configured.

FIG. 14 shows an example of machine learning using the training learning model TTM shown in FIG. 11. As shown in the figure, time-series data is sequentially read into the training learning model TTM. The figure shows time series data from data Dp25 25 minutes ago to time of interest Dp0. The fact that time t is shown with a minus sign "-" indicates that it is a time that goes back from the time of interest (t=0). In addition, the time series data Dp25 to Dp0 include various measured values DS25 to DS0 of the time measured and stored by the measurement node 401, such as the temperature and humidity of the internal space 201 of the growth facility 200, and the control node 301. Drive pattern data DD25 to DD0 indicating the operating states of various changing devices 300 to be driven, such as the heating device 310 and the carbon dioxide generating device 330, are included. In addition, in the figure, the heating device 310 is shown as "heating". Regarding the skylight and side window, the ratio of opening and closing of the skylight and side window by the window opening/closing device 355 is expressed as 1/6 or 4/6.

During learning, time series data Dp25 to Dp0 every 5 minutes are sequentially input to the training learning model TTM, and the next drive pattern data Df5 and the temperature after 5 minutes controlled by the drive pattern data Df5 are Input data with the result that the temperature was 21°C as a label. Upon receiving these inputs, the RNN inside the training learning model TTM and the weighting between the processing layers LL1 to LLn are learned so that the value corresponding to 21°C is output to the final output node op1. .

By performing the above learning process, a machine learned model 701 is generated. This machine learned model 701 is stored in the prediction control unit 130. Therefore, the operation of the prediction control unit 130 using this machine learned model 701 will be explained next. FIG. 15 is an explanatory diagram showing a schematic configuration of the prediction unit 90 using a machine-learned model. This figure is similar to FIG. 14 showing the state of machine learning, but what is used is a machine learned model 701 instead of the training learning model TTM. This machine learned model 701 has already completed the learning described above, so if one of the next drive pattern data DPD is input at the stage where the time series data Dp25 to Dp0 are sequentially input, the growth facility The predicted temperature Tm of the internal space 201 of 200 is output from the output node op1. Note that when converting the output value of the output node op1 into the predicted temperature Tm and reading it, it is sufficient to read it with an accuracy commensurate with the control, for example, the prediction may be made in 1°C increments, or it may be read in 0.1°C increments. good. Alternatively, if there is no problem with control, reading may be performed in rough increments such as 2°C increments.

The CPU 10 of the management device 101 executes the process shown in FIG. Predict the temperature of Furthermore, the management device 101 uses this predicted value to determine drive patterns for the various change devices 310 to 365. FIG. 16 is a flowchart showing the processing of the prediction control unit, and this processing is executed every 5 minutes. When the process starts, first, the target value Tt is obtained (step S700). Here, the target value is the temperature of the internal space 201 after 5 minutes. The target value Tt is one of the target values of various measured values displayed on the terminal device 600, as illustrated in FIG. Note that although the prediction control unit 130 can simultaneously handle two or more types of physical quantities as target values, here, for the sake of convenience, we will take temperature as a single physical quantity and set the temperature of the internal space 201 to the target value Tt. as something to control. This will be explained below. When controlling multiple types of physical quantities to target values, it is sufficient to prepare a machine-learned model for each physical quantity, provide a connection layer that combines the outputs, and perform control.

After acquiring the temperature of the internal space 201 of the growth facility 200 as the target value Tt, the next most recent time series data Dp0 is acquired (step S710). As already explained, the time series data Dp0 includes various measurement values DS0 at that time measured and stored by the measurement node 401, for example, data such as the temperature and humidity of the internal space 201 of the growth facility 200, and the control node 301. Drive pattern data DD0 indicating the operating states of various changing devices 300 driven by, for example, heating device 310 and carbon dioxide generating device 330, is included. These data can be obtained by reading the command table 141 and data table 142 prepared in the memory 20. This time series data Dp0 is input to the RNN of the machine learned model 701 (step S720), and then the process of estimating the temperature 5 minutes later (steps S730 to S750) is repeatedly executed.

The repetitive process (RPTs to RPTe) for estimating the temperature includes a process of reading a drive pattern (step S730), a process of obtaining an estimated value Tn (step S740), and a process of storing the estimated value (step S750). In the temperature estimation process, these processes are repeated until all drive patterns are exhausted. The drive pattern is a combination of on/off and drive amounts of each device included in the various changing devices 300. In FIG. 15, as pattern 1, which is a part of the pattern, the heating device 310 is turned off (not heated), the carbon dioxide generator 330 is turned off, and the skylight is fully closed (0/6) by the shading device 350. A combination was shown in which the side windows were opened only 2/6 of the way. In the figure, four patterns 1 to 4 are shown, but all combinations are prepared as drive patterns, and the temperature of the internal space 201 in each drive pattern is estimated. Note that instead of all combinations of drive patterns, only the combinations of the operating states of the various change devices 310 to 365 that affect the actual temperature control may be taken up as drive patterns, or during supervised learning. Only the combinations that are the subject of learning may be taken up as drive patterns.

All drive patterns are read (step S730), an estimated temperature value Tn is obtained (step S740), and this is stored (step S750). As a result, if there are n driving patterns, n estimated values T1, T2, . . . Tn are stored in the memory 20. When the above processing for all drive patterns is completed, the estimated value closest to the target value Tt is searched among the obtained estimated values Tn, and the drive pattern corresponding to the estimated value Tn is selected (step S760). This situation is shown in FIG. In this example, the target value Tt is 21°C. The drive pattern 1 included in the drive pattern table DPD is sequentially input to the machine learned model 701 to obtain and store an estimated temperature value. Since the estimated temperature for each driving pattern is stored in the estimation result table RST that stores estimated temperature values, driving pattern 4 is selected by comparing this with the target temperature Tt (21° C.). . In response to this result, the prediction control unit 130 drives the various change devices 310 to 365 using the drive pattern (drive pattern 4 in this example) (step S770). Actual drive control of the various change devices 300 is realized by writing the on/off and drive amounts of the various change devices 310 to 365 in the command table 141, as described above.

(A4) Switching operation mode:
FIG. 18 is a flowchart showing the details of switching control for switching the operation mode of the management device 101. This process is repeatedly executed by the switching unit 160 of the management device 101. The switching unit 160 acquires the selected operation mode via the user interface of the terminal device 600 in step S905.

If the manual control mode is selected, the switching unit 160 switches the operation mode of the management device 101 to the manual control mode in step S910. In step S915, switching unit 160 determines whether a predetermined time has elapsed. This time is set, for example, to 5 minutes from the start of the operation mode switching process, in accordance with the time interval at which the data table 142 is updated. If it is determined in step S915 that the predetermined time has not elapsed, the switching unit 160 returns to step S910 and continues the manual control mode. On the other hand, if it is determined in step S915 that the predetermined time has elapsed, the switching unit 160 ends this process. After that, the switching unit 160 repeats this process.

If the non-prediction control mode is selected, the switching unit 160 switches the operation mode of the management device 101 to the non-prediction control mode in step S920. In step S925, switching unit 160 determines whether a predetermined time has elapsed. This time is set, for example, to 5 minutes from the start of the operation mode switching process. If it is determined in step S925 that the predetermined time has not elapsed, the switching unit 160 returns to step S920 and continues the non-prediction control mode. On the other hand, if it is determined in step S925 that the predetermined time has elapsed, the switching unit 160 ends this process. After that, the switching unit 160 repeats this process.

If the control mode with prediction is selected, the switching unit 160 switches the operation mode of the management device 101 to the control mode with prediction in step S930. In step S932, switching unit 160 determines whether a predetermined release condition is satisfied. In this embodiment, the cancellation condition includes the condition that the magnitude of the prediction error of the prediction unit 90 is equal to or greater than a predetermined amount. When predicting a plurality of physical quantities, the release condition may be that the total value of prediction errors for each physical quantity is equal to or greater than a predetermined amount. In this case, the prediction accuracy by the prediction unit 90 can be easily evaluated with one value. The release condition may be a condition that the total value of the prediction error of each physical quantity multiplied by a predetermined weighting coefficient is greater than or equal to a predetermined amount. In this case, even though the error in a physical quantity that is highly important for the growth of an organism is small, the switch to non-prediction control is suppressed due to an increase in the error in a physical quantity that is less important for the growth of an organism. can. Furthermore, if the carbon dioxide concentration is 400 ppm or less over a predetermined period of time, it is assumed that the internal space 201 of the growth facility 200 is not isolated from the outside. In such a state, it is difficult to ensure prediction accuracy by the prediction unit 90, so the release conditions include the condition that the carbon dioxide concentration measured by the carbon dioxide sensor 430 is 400 ppm or less for a predetermined period of time. Good too. In addition, the cancellation conditions include a condition that the amount of solar radiation measured by the sunlight sensor 450 is equal to or higher than a predetermined amount, a condition that the weather forecast for the area where the growing facility 200 is located is stormy, and a condition that the wind direction is a predetermined one. The conditions may include a condition that the direction is , and a condition that the wind speed is a predetermined amount or more.

If it is determined in step S932 that the release condition is satisfied, the switching unit 160 moves to step S920 and switches the operation mode of the management device 101 to the non-prediction control mode. Note that in another embodiment, the control mode with prediction is selected via the user interface, and then the switching unit 160 switches to the control mode without prediction in step S932, and step S920 and step S925 are If the release condition is no longer satisfied during this period, the switching unit 160 may return the control mode without prediction to the control mode with prediction.

If it is determined in step S932 that the release condition is not satisfied, in step S935 the switching unit 160 determines whether a predetermined period of time has elapsed. This time is set, for example, to 5 minutes from the start of the operation mode switching process. If it is not determined that the predetermined time has elapsed, the switching unit 160 returns to step S930 and continues the control mode with prediction. On the other hand, if it is determined that the predetermined time has elapsed, the switching unit 160 ends this process. After that, the switching unit 160 repeats this process.

According to the growth facility control system 100 in the present embodiment described above, the prediction unit 90 accurately predicts the internal environment of the growth facility 200 from past time-series data, and various change devices corresponding to this predicted value By selecting and driving the drive patterns 310 to 365, the temperature of the internal space 201 of the growth facility 200 can be stably controlled. In particular, in this embodiment, the growing facility control system 100 is provided with a switching unit 160 that switches the operation mode of the management device 101. Therefore, when the prediction accuracy by the prediction unit 90 is high, by switching the operation mode of the management device 101 to the control mode with prediction, the growth environment in the growth facility 200 can be maintained within an appropriate environmental range in the control mode with prediction. I can do it. On the other hand, when the prediction accuracy by the prediction unit 90 is low, by switching the operation mode of the management device 101 to the control mode without prediction, the control mode with prediction is continued, so that the growing environment deviates from the appropriate environmental range. can be suppressed.

Further, in the present embodiment, when the user performs an operation mode switching operation on the terminal device 600, the switching unit 160 switches to the operation mode selected by the user. Therefore, the user can switch the operation mode depending on the situation. Furthermore, in the present embodiment, when the prediction accuracy of the prediction unit 90 is lower than a predetermined value, the switching unit 160 automatically changes the control mode from the control mode with prediction to the control mode without prediction, without the user's operation mode switching operation. Switch to control. Therefore, it is possible to prevent the growth environment from deviating from the appropriate environmental range due to continued prediction control with low prediction accuracy.

Further, in this embodiment, each control unit 110, 120, 130 writes the drive patterns of the various change devices 310 to 365 in the command table 141, and the control node 301 refers to the command table 141 and writes the drive patterns in the command table 141. The various change devices 310 to 365 are operated according to the latest drive pattern. Therefore, the three control units 110, 120, and 130 can be easily changed or deleted. Additionally, in addition to the three control units 110, 120, and 130, a new control unit that can read various measured values from the data table 142 and write drive patterns to the command table 141 can be easily added. be able to.

B. Second embodiment:
Next, a second embodiment of the present disclosure will be described. The prediction unit 90B of the second embodiment differs from the prediction unit 90 of the first embodiment in that it has an additional learning mechanism, and has substantially the same configuration in other respects. The main parts of the prediction unit 90B of the second embodiment are shown in FIG. As illustrated, the management device 101 and the prediction control unit 130 in the second embodiment are the same as those in the first embodiment. The prediction unit 90B of the second embodiment differs from the first embodiment in that it includes an update device 900 that updates the machine learned model 701 used by the prediction control unit 130.

The update device 900 for the prediction unit 90B includes an additional data storage unit 910 that stores teacher data ATD for additional learning, and an additional learning unit 920 that performs additional learning. The additional data storage unit 910 receives the instruction from the additional learning unit 920 and acquires time-series data necessary for additional learning from the command table 141 and data table 142 in the memory 20 of the management device 101. The additional learning unit 920 performs additional learning processing.

FIG. 20 is a flowchart showing additional learning processing executed by the additional learning section 920. This process is executed in the update device 900 connected to the management device 101 via the network NW. When the update device 900 executes this process, it internally stores the same learned model 701 currently used in the management device 101. In this embodiment, additional learning is performed once a day to update the machine learned model 701 currently used by the management device 101. In other words, before additional learning is performed, the machine learned model 701 that was updated the previous day is stored in the update device 900, and the additionally learned machine learned model whose content has been updated by performing additional learning is stored in the update device 900. 701 is copied to the management device 101, but the same one remains in the update device 900, and this machine learned model 701 is used during additional learning the next day. In this way, the machine learned model 701 is gradually trained.

A CPU (not shown) of the update device 900 executes the process shown in FIG. 20 at predetermined intervals, for example, every 5 minutes. When the process is started, first, the timing of the process is determined (step S800). The timing of processing is either the timing to perform additional learning or the timing to acquire and accumulate data on drive amounts and measured values. Additional learning is performed once a day, for example, at a predetermined timing at night when the outside temperature of the growing facility 200 is stable. If the timing is other than this, the process moves to step S810, and a process is performed to acquire the data of the drive amount and measured value from the memory 20 of the management device 101 via the network NW (step S810). Subsequently, this data is stored in the additional data storage unit 910 as time series data for additional learning (step S815). At this time, the additional learning unit 920 uses the acquired data as teacher data ATD for additional learning, and also performs formatting such as labeling. After the above processing, the process exits to "RTN" and this processing routine is temporarily ended.

In this embodiment, the management device also performs processing to drive the various change devices 310 to 365 every 5 minutes, and the command table 141 and data table 142 are rewritten, so as one day passes,
(60 minutes ÷ 5 minutes) x 24 hours = 12 x 24 = 288
This time series data is prepared in the additional data storage unit 910 as teacher data ATD for additional learning.

Therefore, if it is determined in step S800 that it is time for additional learning, then additional learning processing is performed (step S820). The additional learning process is similar to the learning process already described using FIGS. 10 to 14. In the learning process explained using FIGS. 10 to 14, the learning target was learned using the training learning model TTM, but in the additional learning process, learning was performed using the machine learned model 701 that has already been trained once. Let's do it. This kind of learning of a trained model is also called relearning. In any case, the weighting of the connection between each processing layer of the machine learned model 701 is corrected using additional learning training data ATD prepared based on the latest data. When the additional learning (step S820) is completed, a request is made to the prediction control unit 130 to stop the operation via the network NW (step S830).

Upon receiving this request, the prediction control unit 130 stops its operation. In this case, the control of the internal environment of the growing facility 200 may be performed by the non-prediction control unit 120. The operation of the prediction control unit 130 is monitored via the network NW, and if it is determined that it has stopped (step S840: "YES"), the machine learned model 701 that has undergone additional learning is used to predict the operation via the network NW. It is transmitted to the prediction control unit 130 to update the machine learned model 701 built in the prediction control unit 130 (step S850). Thereafter, the process exits to "RTN" and ends this processing routine.

When the machine learned model 701 is updated in this way, the prediction control unit 130 returns to a controllable state and takes charge of controlling each physical quantity in the internal space 201 of the growing facility 200 as necessary.

In the prediction unit 90B of the second embodiment described above, additional training data ATD is prepared to additionally learn the machine learned model 701 based on the control performed in one day, and additional learning is performed. The completed model 701 is updated daily, and control that is adapted to the external environment that differs depending on the location where the growing facility 200 is installed becomes possible. As shown in FIG. 12, a growing facility 200 that attempts to predict and control the internal environment is installed in a specific area A, and in the growing facility 200, the prediction unit 90B performs prediction and the prediction control unit 130 performs control. Even if the training learning model TTM is learned using time-series data from the growing facilities 202 to 207 that existed before the above, the growing facilities 202 to 207 cannot be the same as the growing facility 200. If the installation location is different, conditions such as outside temperature, sunlight, and air volume will differ, as well as the size of the internal space 201, the efficiency of the various change devices 300, and the installation location in the internal space 201. Therefore, by performing additional learning using the teacher data ATD prepared based on the time series data acquired in the growing facility 200 that is actually the target of control, the prediction accuracy can be improved and the control can be improved. It becomes possible to achieve higher precision and stability.

In this embodiment, additional learning is performed once a day by storing the teacher data ATD all at once, but new time-series data is obtained under control by the management device 101. It may also be performed sequentially at different timings. Further, additional learning may be performed at intervals of a long period of time, such as one week or one month, or additional learning may be performed manually upon receiving instructions for additional learning. Further, if the performance of the CPU 10 of the management device 101, the attached GPU, etc. is high, additional learning may be performed within the management device 101. Instead of additional learning, the training learning model TTM may be learned to generate another machine learned model, and this and the existing machine learned model 701 may be connected to make predictions.

In this embodiment, the switching unit 160 controls switching to the control mode with prediction when the prediction accuracy of the prediction unit 90B exceeds a predetermined value when the manual control mode or the control mode without prediction is selected. The proposed information may be transmitted to the terminal device 600. Information suggesting switching to the predictive control mode may be displayed, for example, in the information display area R4 of the user interfaces UI1 and UI2. In this way, it is possible to switch to the control mode with prediction after confirming that the additional learning has progressed sufficiently, thereby increasing convenience for the user.

C. Other embodiments:
(1) One of the other embodiments of the present disclosure is a growing facility that controls the environmental state of a growing facility that includes an internal space in which living things are grown and a plurality of types of changing devices that change the environmental state of the internal space. This is an aspect of a facility control system. This growth facility control system includes a measurement unit that is provided in at least the internal space of the growth facility and measures a plurality of types of physical quantities that reflect the environmental state, and a measurement unit that receives time-series data of at least one of the physical quantities from the measurement unit. a prediction unit that uses the time-series data to predict an environmental state that will occur in the internal space of the growth facility when the change device operates, and a predetermined time period from the current time, and a prediction result of the prediction unit; a control mode with prediction that brings the environmental state of the growth facility closer to the target state by controlling the plurality of types of changing devices using the prediction results; A management device having an operation mode including a non-prediction control mode that brings an environmental state closer to the target state, and including a switching unit that executes switching of the operation mode. In this way, when the prediction accuracy by the prediction unit is high, by switching the operation mode of the management device to the control mode with prediction, it is possible to maintain the growing environment within an appropriate environmental range in the control mode with prediction. On the other hand, if the prediction accuracy by the prediction unit is low, the operation mode of the management device is switched to the control mode without prediction, and the control mode with prediction is continued to prevent the growth environment from deviating from the appropriate environmental range. can.

Such a growing facility control system can be used in fields such as agriculture, forestry, fishing, and even livestock farming. Targeted growing facilities include plastic greenhouses for growing and breeding vegetables and mushrooms, cages for cultivating fish, crustaceans, and shellfish, and large-scale facilities for raising chickens and collecting eggs.

Various types of physical quantities that reflect environmental conditions can be assumed, such as temperature, humidity, atmospheric pressure, and amount of solar radiation. Furthermore, any sensor may be used as the measurement unit as long as it represents the environmental state.

The drive amount of the plurality of types of changing devices that change the environmental state may include a drive amount that corresponds to simple on/off, a drive amount that can be adjusted in multiple stages or steplessly, and the like. The amount of drive may be grasped as a status such as on/off, may be grasped as drive time, or may be grasped as the total energy driven by the change device. The transition from fully open to fully closed may be divided into equal parts, that is, it may be grasped as a percentage of the total drive amount.

(2) In the above configuration (1), the switching unit switches the operation mode when the difference between the prediction result of the prediction unit and the measurement result of the measurement unit becomes a predetermined size or more. The control mode with prediction may be switched to the control mode without prediction.
By doing so, it is possible to prevent the growth environment from deviating from the appropriate environmental range due to continued prediction control with low prediction accuracy.

(3) In the above configuration (2), the switching unit may calculate a total value of prediction errors of the plurality of physical quantities as the magnitude of the difference.
In this way, prediction accuracy can be easily evaluated using a single value.

(4) In the above configuration (2), the switching unit may calculate the total value of the prediction errors of the plurality of physical quantities multiplied by a predetermined weight factor as the magnitude of the difference.
By doing this, even though the error in physical quantities that are highly important for the growth of living organisms is small, the error in physical quantities that are less important for the growth of living organisms becomes large, resulting in switching to non-predictive control. can be suppressed.

(5) The configuration of (1) above may further include a terminal device that is configured to be able to communicate with the management device and has a user interface that can switch the operation mode of the management device.
This allows the user to switch the operation mode depending on the situation.

(6) In such a configuration as described in (1) above, the prediction unit may generate time-series data of at least one physical quantity in a facility corresponding to the growth facility and time-series data of drive amounts of a plurality of types of changing devices in the facility. Using a machine learned model obtained by performing machine learning using the relationship as training data, the time series data of the measured values of the physical quantity acquired at the growth facility and the time series data of the drive amount are Based on this, a predicted value that is a value of the at least one physical quantity after a predetermined time from the current time may be predicted.
In this way, even if the environment in the internal space is difficult to predict because it is in contact with the external environment, such as in a growing facility, it is possible to predict the predicted value of at least one physical quantity after a predetermined time from the current point in time. This can be used for display and control.

The facility corresponding to the growing facility may be the growing facility itself, or may be a different growing facility from the growing facility that is the target of prediction. It is preferable that other growing facilities exist in areas with similar environments to the growing facility that is the target of prediction, as the initial machine learning results will be similar, but learning with a large amount of training data is preferable. From the perspective of doing the following and using highly versatile machine learned models, there is no problem even if the commonality is low.

Various types of physical quantities can be assumed as the at least one physical quantity, such as temperature, humidity, atmospheric pressure, and amount of solar radiation. These physical quantities may be two or more. In this case, combinations of multiple physical quantities will be predicted, so either prepare a training learning model large enough to handle the number of combinations of multiple physical quantities, or create a training learning model for each physical quantity. It is possible to take measures such as preparing a final layer that combines the output layers of each training learning model and outputs the predicted values of both.

(7) In such a configuration as described in (6) above, the machine learned model is provided with time-series data of at least one of the physical quantities in the growing facility and drive amounts of the plurality of types of changing devices in the growing facility. It may also include an updating device that updates the machine learned model by performing additional learning using the relationship with time series data as teaching data.
In this way, the accuracy of prediction can be improved as the organisms grow in the growth facility. In particular, if the teacher data on which the training learning model is learned is not from the target growing facility itself but from a facility corresponding to the growing facility, the effect of such additional learning is large. When attaching a growth environment prediction device to a growth facility, the time series obtained from regional or national facilities, or facilities with different internal space sizes and types and capacities of changing devices installed, is used at the time when organisms start growing. There are cases where it is necessary to prepare a machine-learned model that has been trained using training data based on the data, and in such cases, by repeating the growth of the organism, it grows into a machine-learned model that is specific to the location where the growing facility is located. can be done. Therefore, by repeating the growth of organisms, the accuracy of prediction can be gradually improved.

(8) In the above configuration (6), further, the time series data of at least one of the physical quantities in the growth facility during a predetermined time and the time series of the driving amounts of the plurality of types of changing devices in the growth facility are further provided. The update device may include a storage unit that stores relationships with data over a predetermined period of time, and the update device may perform the additional learning using the stored relationships after the predetermined period has elapsed.
In this way, additional learning can be performed all at once, and the machine learned model can be updated efficiently. Of course, if the processing capacity of the growth environment prediction device is sufficiently high, an update device can be installed in the growth environment prediction device to perform additional learning every time new time series data is obtained, without accumulating time series data. Good too.

(9) In the above configurations (1) to (8), the plurality of types of changing devices include, in the growing facility, a heating device that imparts heat to the internal space, a cooling device that takes away heat from the internal space, A humidifying device that applies water vapor to the internal space, a drying device that removes water vapor from the internal space, a mist applying device that applies mist to the internal space, a carbon dioxide generator that applies carbon dioxide to the internal space, and a carbon dioxide generator that applies carbon dioxide to the internal space. A ventilation device for exchanging gas with the outside, a circulation device for circulating gas in the interior space, a shading device for changing the amount of sunlight incident on the interior space, and a culture soil provided in the interior space. The growing facility may include at least two of an irrigation device that supplies water and an opening adjustment device that adjusts the opening amount of a window provided on the ceiling or wall of the growth facility.
In this way, the environment inside the growing facility can be controlled in various ways. Of course, it is only necessary to provide a plurality of types of changing devices, and there is no problem even if three or more types of changing devices are provided.

(10) In the above configurations (1) to (8), the measuring unit includes, in the growing facility, a temperature sensor that measures the temperature of the internal space, a humidity sensor that measures the humidity of the internal space, and a humidity sensor that measures the humidity of the internal space. a carbon dioxide sensor that measures the carbon dioxide concentration in the space; a ventilation sensor that measures the amount of gas exchanged between the interior space and the outside; a circulation amount sensor that measures the amount of gas circulated within the interior space; It may be provided with at least one of a sunlight sensor that measures the amount of sunlight incident on the internal space, and a moisture sensor that measures the amount of moisture contained in the culture soil provided in the internal space. Of course, it is also possible to include a plurality of sensors.

(11) In each of the above embodiments, a part of the configuration realized by hardware may be replaced by software. At least a part of the configuration that has been realized by software can also be realized by a discrete circuit configuration. Further, when part or all of the functions of the present disclosure are realized by software, the software (computer program) can be provided in a form stored in a computer-readable recording medium. "Computer-readable recording media" is not limited to portable recording media such as flexible disks and CD-ROMs, but also various internal storage devices in computers such as RAM and ROM, and fixed devices such as hard disks. It also includes external storage devices. That is, the term "computer-readable recording medium" has a broad meaning including any recording medium on which data packets can be fixed rather than temporarily.

The present disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from the spirit thereof. For example, the technical features in the embodiments corresponding to the technical features in each form described in the summary column of the invention may be used to solve some or all of the above-mentioned problems, or to achieve one of the above-mentioned effects. In order to achieve some or all of the above, it is possible to replace or combine them as appropriate. Further, unless the technical feature is described as essential in this specification, it can be deleted as appropriate.

10... CPU, 20... Memory, 30... Input/output interface, 90, 90B... Growth environment prediction device, 100... Growth facility control system, 101... Management device, 110... Manual control section, 120... Automatic control section without prediction, 130 ...Control unit with prediction, 140...Writing unit, 141...Command table, 142...Data table, 150...Communication unit, 160...Switching unit, 200...Growing facility, 201...Internal space, 202-207, 212-217... Growth facility, 300... Change device, 301... Control node, 302... CPU, 303... Memory, 304... Input/output interface, 310... Heating device, 315... Cooling device, 320... Humidifying device, 325... Drying device, 330... Dioxide Carbon generator, 340... Ventilation device, 345... Circulation device, 350... Shading device, 355... Window opening/closing device, 360... Irrigation device, 365... Soil heating device, 400... Measurement unit, 401... Measurement node, 402... CPU, 403... Memory, 404... Input/output interface, 410... Temperature sensor, 420... Humidity sensor, 430... Carbon dioxide sensor, 440... Ventilation sensor, 445... Circulation amount sensor, 450... Sunlight sensor, 460... Soil moisture sensor, 465 ... soil temperature sensor, 500 ... communication device, 600 ... terminal device, 700 ... server, 701 ... machine learned model, 710 ... storage device, 900 ... update device, 910 ... additional data storage section, 920 ... additional learning section, TTM …Learning model for training

Claims (10)

A growing facility control system for controlling the environmental state of a growing facility, comprising an internal space in which organisms are grown, and a plurality of types of changing devices that change at least one physical quantity representing the environmental state of the internal space,
a measurement unit that is provided in at least the internal space of the growth facility and measures the at least one physical quantity;
Measurement results including time-series data of the at least one physical quantity acquired from the measurement unit, time-series data of at least one physical quantity in a corresponding facility corresponding to the growth facility acquired in advance, and multiple types of changes in the corresponding facility. a prediction unit that predicts an environmental state that will occur in the internal space of the growing facility when the changing device operates, using the relationship between the drive amount of the device and time-series data ;
A control mode with prediction that brings the environmental state of the growing facility closer to the target state by controlling the plurality of types of changing devices using the prediction results of the prediction unit ; a management device that has a non-prediction control mode that brings the environmental state closer to the target state by controlling a plurality of types of changing devices as an operating mode, and includes a switching unit that executes switching of the operating mode;
Equipped with
A growing facility control system, wherein the corresponding facility corresponding to the growing facility includes at least one of facilities that have commonality that allows machine learning between the growing facility and the environment of the growing facility . The switching unit changes the operation mode from the control mode with prediction to the control mode without prediction when the difference between the prediction result of the prediction unit and the measurement result of the measurement unit becomes a predetermined value or more. switch,
The growing facility control system according to claim 1. The switching unit calculates a total value of prediction errors of the plurality of physical quantities as the magnitude of the difference.
The growing facility control system according to claim 2. The switching unit calculates the total value of the prediction errors of the plurality of physical quantities multiplied by a predetermined weight factor as the magnitude of the difference.
The growing facility control system according to claim 2. comprising a terminal device configured to be able to communicate with the management device and having a user interface capable of switching the operation mode of the management device;
The growing facility control system according to claim 1. The prediction unit is configured to perform machine learning using as training data a relationship between time series data of at least one physical quantity in the corresponding facility and time series data of driving amounts of a plurality of types of changing devices in the corresponding facility. A predetermined period of time has elapsed from the current time of the at least one physical quantity based on time-series data of the measured values of the physical quantity and time-series data of the driving amount acquired in the growth facility using a machine-learned model. predict the predicted value, which is the value of
The growing facility control system according to claim 1. Additional learning is performed on the machine learned model using the relationship between time-series data of at least one physical quantity in the growing facility and time-series data of driving amounts of the plurality of types of changing devices in the growing facility as training data. and an update device that updates the machine learned model by updating the machine learned model.
The growing facility control system according to claim 6. Furthermore, a relationship between time-series data of at least one of the physical quantities in the growth facility during a predetermined period of time and time-series data of drive amounts of the plurality of types of changing devices in the growth facility is accumulated over a predetermined period of time. Equipped with a storage section,
The updating device performs the additional learning using the accumulated relationships after the predetermined period has elapsed.
The growing facility control system according to claim 7. The plurality of types of changing devices include, in the growing facility, a heating device that applies heat to the internal space, a cooling device that removes heat from the internal space, a humidifier that applies water vapor to the internal space, and a water vapor in the internal space. a drying device that removes carbon dioxide, a mist applying device that applies mist to the internal space, a carbon dioxide generator that applies carbon dioxide to the internal space, a ventilation device that exchanges gas between the internal space and the outside, and a mist applying device that applies mist to the internal space; a circulation device for circulating gas, a shading device for changing the amount of sunlight incident on the interior space, an irrigation device for supplying water to culture soil provided in the interior space, and a water supply device installed on the ceiling or wall of the growth facility. comprising at least two of the opening amount adjusting devices for adjusting the opening amount of the window.
The growth facility control system according to any one of claims 1 to 8. The plurality of types of physical quantities include, in the growth facility, a temperature sensor that measures the temperature of the internal space, a humidity sensor that measures the humidity of the internal space, a carbon dioxide sensor that measures the carbon dioxide concentration of the internal space, and a carbon dioxide sensor that measures the carbon dioxide concentration of the internal space. A ventilation sensor that measures the amount of gas ventilation exchanged between the space and the outside, a circulation amount sensor that measures the amount of gas circulating within the interior space, and a sunlight sensor that measures the amount of sunlight incident on the interior space. , a moisture sensor that measures the amount of moisture contained in the culture soil provided in the internal space;
The growth facility control system according to any one of claims 1 to 8.

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