Plant cultivation facility

Abstract

To provide a plant cultivation facility that can easily adjust carbon dioxide concentration and humidity inside a raising environment of plants to an appropriate state.SOLUTION: A plant cultivation facility comprises: a raising chamber 2 which has a space for raising plants inside thereof; ventilation means 3 which is capable of switching a ventilation state of ventilating the inside of the raising chamber 2 and a non-ventilation state; a storage part 42 which stores concentration information D1 showing the state of carbon dioxide concentration inside the raising chamber 2 and humidity information D2 showing the state of humidity inside the raising chamber 2; a ventilation a control part 45 which performs control of switching the state of the ventilation means 3 to the ventilation state or the non-ventilation state on the basis of the concentration information D1 and the humidity information D2 stored in the storage part 42. The ventilation control part 45, in the case where the concentration information D1 shows that carbon dioxide concentration in the raising chamber 2 is inappropriate, switches the ventilation means 3 to the ventilation state even if the humidity information D2 shows that humidity in the raising chamber 2 is appropriate.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a plant cultivation facility for cultivating plants. [Background technology]

[0002] As an example of the plant cultivation equipment, there is a mushroom cultivation equipment disclosed in Patent Document 1. Engineering The cultivation room is known.

[0003] In this artificial cultivation room for edible mushrooms, a supply duct with an electric damper and an exhaust duct with an electric damper are attached to the cultivation room, and a detector tube is also installed to measure the concentration of CO2 gas, which is an excreted gas breathed by edible mushrooms.

[0004] It is said that by automatically controlling the opening amount (ventilation volume) of the supply duct and exhaust duct according to the CO2 gas concentration measured by the detector tube, it is possible to prevent inhibition of the growth of edible mushrooms. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 56-58422 Summary of the Invention [Problem to be solved by the invention]

[0006] By the way, the quality of the plant growing environment depends not only on the amount of carbon dioxide but also on humidity, so it is necessary to adjust the growing environment according to these conditions. Note that such problems can also occur in facilities for growing plants other than edible mushrooms.

[0007] In view of the above circumstances, an object of the present invention is to provide a plant cultivation facility that can easily adjust the carbon dioxide concentration and humidity in the plant cultivation environment to appropriate levels. [Means for solving the problem]

[0008] The plant cultivation facility of the present invention comprises: a cultivation room having a space therein for cultivating plants; a ventilation means capable of switching between a ventilation state in which the inside of the cultivation chamber is ventilated and a non-ventilation state in which the inside of the cultivation chamber is not ventilated; A storage unit that stores concentration information indicating a state of a carbon dioxide concentration in the cultivation chamber and humidity information indicating a state of humidity in the cultivation chamber; A ventilation control unit that controls switching the state of the ventilation means to the ventilation state or the non-ventilation state based on the concentration information and the humidity information stored in the memory unit, When the concentration information indicates that the carbon dioxide concentration in the cultivation chamber is inappropriate, the ventilation control unit switches the ventilation means to the ventilation state even if the humidity information indicates that the humidity in the cultivation chamber is appropriate.

[0009] According to the plant cultivation equipment having the above-described configuration, if the carbon dioxide concentration inside the cultivation chamber is inappropriate, even if the humidity inside the cultivation chamber is appropriate, the ventilation control unit switches the ventilation means to a ventilation state to ventilate the cultivation chamber, thereby making the carbon dioxide concentration inside the cultivation chamber appropriate, and thereby maintaining the inside of the cultivation chamber, which serves as an environment for plant cultivation, in an appropriate state.

[0010] In the plant cultivation facility of the present invention, The ventilation control unit may be configured to switch the ventilation means to the ventilation state when the concentration information indicates that the carbon dioxide concentration in the cultivation chamber is inappropriate, regardless of whether the humidity in the cultivation chamber indicated by the humidity information is appropriate or inappropriate.

[0011] In this way, by giving priority to optimizing the carbon dioxide concentration over optimizing the humidity, it becomes easier to maintain the interior of the cultivation room in a state more suitable for growing plants.

[0012] In the plant cultivation facility of the present invention, a concentration determination unit that determines whether the carbon dioxide concentration in the cultivation chamber is appropriate or inappropriate based on the concentration information; The concentration determination unit may be configured to determine that the carbon dioxide concentration in the cultivation chamber is appropriate when the concentration information is below a concentration upper limit threshold for determining that the carbon dioxide concentration in the cultivation chamber is appropriate, and to determine that the carbon dioxide concentration in the cultivation chamber is inappropriate when the concentration information exceeds the concentration upper limit threshold.

[0013] According to the plant cultivation equipment having the above-described configuration, the carbon dioxide concentration in the cultivation chamber is determined to be appropriate or inappropriate based on the upper concentration threshold value, making it easier to prevent the interior of the cultivation chamber from falling into a state that has a negative impact on plant cultivation.

[0014] The plant cultivation facility of the present invention comprises: a humidity determination unit that determines whether the humidity in the cultivation chamber is appropriate or inappropriate based on the humidity information; The humidity determination unit may be configured to determine that the humidity in the cultivation chamber is appropriate when the humidity information is below a humidity upper threshold for determining that the humidity in the cultivation chamber is appropriate, and to determine that the humidity in the cultivation chamber is inappropriate when the humidity information exceeds the humidity upper threshold.

[0015] According to the plant cultivation equipment having the above-described configuration, the humidity inside the cultivation chamber is determined to be appropriate or inappropriate based on the upper humidity threshold value, making it easier to prevent the inside of the cultivation chamber from falling into a state that has a negative impact on plant cultivation. Effect of the Invention

[0016] INDUSTRIAL APPLICABILITY As described above, the plant cultivation facility of the present invention can exhibit the excellent effect of easily adjusting the carbon dioxide concentration and humidity in the plant cultivation environment to appropriate states. [Brief description of the drawings]

[0017] [Figure 1]FIG. 1 is a block diagram showing an outline of the configuration of a plant cultivation facility according to one embodiment of the present invention. [Diagram 2] FIG. 2 is an explanatory diagram of the ventilation means of the plant cultivation equipment according to the embodiment. [Diagram 3] FIG. 3 is an explanatory diagram of an operation example of the plant cultivation equipment according to the embodiment. [Figure 4] FIG. 4 is an explanatory diagram of another operation example of the plant cultivation equipment according to the embodiment. [Diagram 5] FIG. 5 is a list of operation examples of the plant cultivation equipment according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, a plant cultivation facility according to one embodiment of the present invention will be described with reference to the accompanying drawings.

[0019] As shown in FIG. 1, the plant cultivation equipment 1 of this embodiment comprises a cultivation chamber 2 having a space (hereinafter referred to as the cultivation space) for cultivating plants (e.g., leafy vegetables) therein, a ventilation means 3 for ventilating the cultivation space, and a control device 4 for controlling the switching of the state of the ventilation means 3.

[0020] Inside the cultivation chamber 2, for example, a planter fixture P for planting plants is installed.

[0021] The ventilation means 3 is configured to be switchable between a ventilation state in which the inside of the growing chamber 2 (growing space) is ventilated and a non-ventilation state in which the inside of the growing chamber 2 (growing space) is not ventilated.

[0022] As shown in Figure 2, the ventilation means 3 of this embodiment has an exhaust path 30 that communicates between the inside of the growing chamber 2 and the outside of the growing chamber 2 and serves as a flow path for air to be exhausted from inside the growing chamber 2 to the outside of the growing chamber 2, an intake path 31 that communicates between the inside of the growing chamber 2 and the outside of the growing chamber 2 and serves as a flow path for air to be supplied from the outside of the growing chamber 2 to the inside of the growing chamber 2, and a ventilation drive unit 32 that generates an air flow in the exhaust path 30 and the intake path 31.

[0023] The exhaust path 30 is connected to a through hole (exhaust hole 20 ) formed in the wall surface of the growth chamber 2 .

[0024] The air intake path 31 is connected to a through hole (air intake hole 21 ) formed in the wall surface of the cultivation chamber 2 .

[0025] The ventilation drive unit 32 has a drive source (motor) 320 and a driven rotation unit 321 that has a plurality of blades and is configured to rotate by receiving the drive force of the drive source 320.

[0026] The ventilation drive unit 32 is configured such that, when the drive source 320 is driven, the driven rotation unit 321 rotates in response to the driving force of the drive source 320, and when the drive of the drive source 320 is stopped, the ventilation drive unit 32 switches to a stopped state in which the driven rotation unit 321 is stopped.

[0027] Therefore, when the ventilation drive unit 32 is driven, the ventilation means 3 is configured to exhaust air from within the cultivation chamber 2 to outside the cultivation chamber 2 through the exhaust path 30 and to take in air from outside the cultivation chamber 2 through the intake path 31 (i.e., a ventilation state in which the cultivation chamber 2 is ventilated), and when the ventilation drive unit 32 is stopped, the air flow in the exhaust path 30 and the air flow in the intake path 31 are stopped (i.e., a non-ventilation state in which the cultivation chamber 2 is not ventilated).

[0028] The cultivation room 2 of this embodiment is installed inside a building 5, as shown in Fig. 1. The building 5 is provided with an air-conditioning room 50 in which an air-conditioning facility 500 is installed, and the cultivation room 2 is installed inside this air-conditioning room 50. Therefore, when the ventilation means 3 is in a ventilation state, the air inside the cultivation room 2 is configured to be exchanged with the air inside the air-conditioning room 50.

[0029] The air conditioning equipment 500 is equipment that can adjust the temperature and humidity within the air-conditioned room 50. By adjusting the temperature and humidity within the air-conditioned room 50 to the desired state using the air conditioning equipment 500, the condition of the air to be replaced with the air within the cultivation room 2 can be maintained.

[0030] The control device 4 may be configured, for example, by a computer. The control device 4 is configured to perform control to switch the state of the ventilation means 3 between a ventilation state and a non-ventilation state.

[0031] The control device 4 of this embodiment includes a concentration information acquisition unit 40 that acquires information indicating the measured value of the carbon dioxide concentration in the cultivation chamber 2, a humidity information acquisition unit 41 that acquires information indicating the measured value of the humidity in the cultivation chamber 2, a memory unit 42 that stores concentration information D1 that indicates the state of the carbon dioxide concentration in the cultivation chamber 2 and humidity information D2 that indicates the state of the humidity in the cultivation chamber 2, a concentration determination unit 43 that determines whether the carbon dioxide concentration in the cultivation chamber 2 is appropriate or inappropriate based on the concentration information D1, a humidity determination unit 44 that determines whether the humidity in the cultivation chamber 2 is appropriate or inappropriate based on the humidity information D2, and a ventilation control unit 45 that controls switching the state of the ventilation means 3 to a ventilation state or a non-ventilation state based on the determination result of the concentration determination unit 43 and the determination result of the humidity determination unit 44.

[0032] The concentration information acquisition unit 40 is configured to acquire information indicating the measurement value of the carbon dioxide concentration in the cultivation chamber 2 measured by a carbon dioxide concentration sensor S1 installed in the cultivation chamber 2 (hereinafter referred to as concentration measurement value information D10).

[0033] Furthermore, the concentration information acquiring unit 40 is configured to execute a process of storing (writing) the concentration measurement value information D10 in the storage unit 42 upon acquiring the concentration measurement value information D10.

[0034] The concentration information acquisition unit 40 only needs to be connected to the carbon dioxide concentration sensor S1 via a wired or wireless connection, and may be directly connected to the carbon dioxide concentration sensor S1 or indirectly connected via another device.

[0035] Furthermore, the concentration information acquiring unit 40 may be configured to receive the measured value of the carbon dioxide concentration as an electrical signal, or may be configured to receive it as a digital signal.

[0036] The humidity information acquisition unit 41 is configured to acquire, for example, information indicating the measurement value of the humidity inside the cultivation chamber 2 measured by a humidity sensor S2 installed inside the cultivation chamber 2 (hereinafter referred to as humidity measurement value information D20).

[0037] Furthermore, the humidity information acquisition unit 41 is configured to execute a process of writing the humidity measurement value information D20 into the storage unit 42 upon acquiring the humidity measurement value information D20.

[0038] The humidity information acquisition unit 41 may be connected to the humidity sensor S2 by wire or wirelessly, and may be connected directly to the humidity sensor S2 or indirectly via another device.

[0039] Furthermore, the humidity information acquiring unit 41 may be configured to receive the measured humidity value as an electrical signal, or may be configured to receive it as a digital signal.

[0040] The concentration information D1 includes the above-mentioned concentration measurement value information D10, and concentration trend information D11 indicating the trend of the carbon dioxide concentration in the cultivation chamber 2.

[0041] The concentration trend information D11 may be configured, for example, to set information (appropriate concentration information) indicating that the carbon dioxide concentration in the growth chamber 2 is in a state suitable for growing plants (appropriate concentration state), or information (inappropriate concentration information) indicating that the carbon dioxide concentration in the growth chamber 2 is in a state unsuitable for growing plants (inappropriate concentration state).

[0042] In addition, in the concentration trend information D11 of this embodiment, information indicating that the carbon dioxide concentration in the cultivation chamber 2 is in an improper concentration state is set to be information indicating that the carbon dioxide concentration in the cultivation chamber 2 is higher than the appropriate state (high concentration state) (high concentration information), or information indicating that the carbon dioxide concentration in the cultivation chamber 2 is lower than the appropriate state (low concentration state) (low concentration information).

[0043] In addition, an appropriate carbon dioxide concentration state is a state in which the carbon dioxide concentration value in the growth chamber 2 is within an appropriate numerical range (for example, a numerical range set as a range suitable for growing plants), and an inappropriate carbon dioxide concentration state is a state in which the carbon dioxide concentration value is outside the numerical range.

[0044] A high carbon dioxide concentration state is a state in which the carbon dioxide concentration value exceeds the above-mentioned numerical range, and a low carbon dioxide concentration state is a state in which the carbon dioxide concentration value is below the above-mentioned numerical range.

[0045] When the carbon dioxide concentration is at a high concentration, the amount of carbon dioxide contained in the air inside the cultivation room 2 becomes excessive, and for example, the balance between the amount of carbon dioxide and the amount of moisture contained in the air may be disrupted, or it may become a state that has an adverse effect on people who enter the cultivation room 2.

[0046] On the other hand, when the carbon dioxide concentration is low, for example, the air inside the cultivation chamber 2 may not contain a sufficient amount of carbon dioxide, which may inhibit plant growth.

[0047] The humidity information D2 includes the humidity measurement value information D20 described above, and humidity trend information D21 indicating the trend of the humidity level in the cultivation chamber 2.

[0048] The humidity trend information D21 may be configured, for example, to set information (appropriate humidity information) indicating that the humidity in the cultivation chamber 2 is suitable for growing plants (appropriate humidity state), or information (inappropriate humidity information) indicating that the humidity in the cultivation chamber 2 is not suitable for growing plants (inappropriate humidity state).

[0049] In addition, in the humidity trend information D21 of this embodiment, information indicating that the humidity in the cultivation chamber 2 is in an inappropriate humidity state is set to either information (high humidity information) indicating that the humidity in the cultivation chamber 2 is higher than the appropriate state (high humidity state), or information (low humidity information) indicating that the humidity in the cultivation chamber 2 is lower than the appropriate state (low humidity state).

[0050] In addition, an appropriate humidity state is a state in which the humidity value inside the growth chamber 2 is within an appropriate numerical range (for example, within a numerical range set as a range suitable for growing plants), and an inappropriate humidity state is a state in which the humidity value is outside the numerical range.

[0051] A high humidity state is a state in which the humidity value exceeds the above-mentioned numerical range, and a low humidity state is a state in which the humidity value is below the above-mentioned numerical range.

[0052] When the humidity level is high, there is an excess of water in the air inside the cultivation chamber 2, which can result in, for example, an imbalance between the amount of carbon dioxide and the amount of water in the air, or can make plants more susceptible to rotting.

[0053] On the other hand, when the humidity state is low, for example, the air inside the growth chamber 2 may not contain a sufficient amount of water, which may hinder plant growth.

[0054] The concentration determination unit 43 is configured to execute a process of acquiring concentration measurement value information D10, a process of deriving concentration trend information D11 based on the acquired concentration measurement value information D10, and a process of storing (writing) the derived concentration trend information D11 in association with the concentration measurement value information D10 in the memory unit 42.

[0055] The concentration determination unit 43 is configured to determine whether the carbon dioxide concentration in the cultivation chamber 2 is in an appropriate concentration state or an inappropriate concentration state (more specifically, whether it is in a high concentration state or a low concentration state) based on the concentration measurement value information D10 in the process of deriving the concentration measurement value information D10.

[0056] More specifically, the concentration determination unit 43 refers to the concentration measurement value information D10, an upper concentration threshold for determining whether or not the carbon dioxide concentration in the cultivation chamber 2 exceeds an upper limit of an appropriate value, and a lower concentration threshold for determining whether or not the carbon dioxide concentration in the cultivation chamber 2 falls below a lower limit of an appropriate value. Note that the appropriate numerical range of the carbon dioxide concentration value described above is a numerical range that is equal to or less than the upper concentration threshold and equal to or more than the lower concentration threshold.

[0057] The concentration determination unit 43 is configured to determine that the carbon dioxide concentration in the cultivation chamber 2 is in an appropriate concentration state if the carbon dioxide value indicated by the concentration measurement value information D10 is below the concentration upper threshold and above the concentration upper threshold, to determine that the carbon dioxide concentration in the cultivation chamber 2 is in an appropriate concentration state (high concentration state) if the carbon dioxide value indicated by the concentration measurement value information D10 is above the concentration upper threshold, and to determine that the carbon dioxide concentration in the cultivation chamber 2 is in an inappropriate concentration state (high concentration state) if the carbon dioxide value indicated by the concentration measurement value information D10 is below the concentration upper threshold, and to treat the determination result as concentration trend information D11.

[0058] When a process is executed to associate the concentration trend information D11 derived by the concentration determination unit 43 with the concentration measurement value information D10 and store it in the memory unit 42, concentration information D1 is created, which has the concentration measurement value information D10 and the concentration trend information D11 associated with the concentration measurement value information D10.

[0059] In addition, when the concentration determination unit 43 determines that a high concentration state exists based on the carbon dioxide value indicated by the concentration measurement value information D10, it sets high concentration information as inappropriate concentration information in the concentration trend information D11, and when it determines that a low concentration state exists based on the carbon dioxide value indicated by the concentration measurement value information D1, it sets low concentration information as inappropriate concentration information in the concentration trend information D11.

[0060] The humidity determination unit 44 is configured to execute a process of acquiring humidity measurement value information D20, a process of deriving humidity trend information D21 based on the acquired humidity measurement value information D20, and a process of storing (writing) the derived humidity trend information D21 in association with the humidity measurement value information D20 in the memory unit 42.

[0061] The humidity determination unit 44 is configured to determine whether the humidity within the cultivation chamber 2 is in an appropriate humidity state or an inappropriate humidity state (more specifically, whether it is in a high humidity state or a low humidity state) based on the humidity measurement value information D20 in the process of deriving the humidity measurement value information D20.

[0062] More specifically, the humidity determination unit 44 refers to the humidity measurement value information D20, an upper humidity threshold for determining whether or not the humidity in the cultivation room 2 exceeds the upper limit of the appropriate value, and a lower humidity threshold for determining whether or not the humidity in the cultivation room 2 falls below the lower limit of the appropriate value. Note that the appropriate numerical range of the humidity value described above is a numerical range that is equal to or less than the upper humidity threshold and equal to or more than the lower humidity threshold.

[0063] The humidity determination unit 44 is configured to determine that the humidity in the cultivation chamber 2 is in an appropriate humidity state when the humidity value indicated by the humidity measurement value information D20 is below the upper humidity threshold and above the upper humidity threshold, determine that the humidity is in an inappropriate humidity state (high humidity state) when the humidity value indicated by the humidity measurement value information D20 is above the upper humidity threshold, and determine that the humidity is inappropriate humidity state (low humidity state) when the humidity value indicated by the humidity measurement value information D20 is below the upper humidity threshold, and to treat the determination result as humidity trend information D21.

[0064] When a process is executed to associate the humidity trend information D21 derived by the humidity determination unit 44 with the humidity measurement value information D20 and store it in the memory unit 42, humidity information D2 is created, which has the humidity measurement value information D20 and the humidity trend information D21 associated with the humidity measurement value information D20.

[0065] When a process is executed to associate the concentration trend information D11 derived by the concentration determination unit 43 with the concentration measurement value information D10 and store it in the memory unit 42, concentration information D1 is created, which has the concentration measurement value information D10 and the concentration trend information D11 associated with the concentration measurement value information D10.

[0066] In addition, if the humidity determination unit 44 determines that the humidity state is high humidity based on the humidity indicated by the humidity measurement value information D20, it sets the humidity tendency information D21 to high humidity information as inappropriate humidity information, and if it determines that the humidity state is low humidity based on the humidity indicated by the humidity measurement value information D20, it sets the humidity tendency information D21 to low humidity information as inappropriate humidity.

[0067] As described above, the ventilation control unit 45 performs control to switch the state of the ventilation means 3 between the ventilation state and the non-ventilation state based on the determination result of the concentration determination unit 43 and the determination result of the humidity determination unit 44.

[0068] The ventilation control unit 45 is configured to execute a concentration adjustment process for switching the state of the ventilation means 3 to a ventilation state or a non-ventilation state based on the concentration information D1, a humidity adjustment process for switching the state of the ventilation means 3 to a ventilation state or a non-ventilation state based on the humidity information D2, and a priority adjustment process for switching the state of the ventilation means 3 to a ventilation state or a non-ventilation state based on the contents of both the concentration information D1 and the humidity information D2.

[0069] The concentration adjustment process of the ventilation control unit 45 is configured to output a command (drive command) to the ventilation means 3 to drive the ventilation drive unit 32 when the carbon dioxide concentration state indicated by the concentration trend information D11 switches from an appropriate concentration state to an inappropriate concentration state (high concentration state or low concentration state), and to output a command (stop command) to the ventilation means 3 to stop driving the ventilation drive unit 32 when the carbon dioxide concentration state indicated by the concentration trend information D11 switches from an inappropriate concentration state (high concentration state or low concentration state) to the appropriate concentration state.

[0070] The control device 4 may be configured to recognize that the carbon dioxide concentration state indicated by the concentration trend information D11 has switched to an appropriate concentration state or an inappropriate concentration state, for example, by repeatedly referring to the concentration trend information D11 at predetermined timings, or may be configured to receive a notification indicating that the information set in the concentration trend information D11 has switched.

[0071] The humidity adjustment process of the ventilation control unit 45 is configured to output a command (drive command) to the ventilation means 3 to drive the ventilation drive unit 32 when the humidity state indicated by the humidity tendency information D21 switches from an appropriate humidity state to an inappropriate humidity state (high humidity state or low humidity state), and to output a command (stop command) to the ventilation means 3 to stop driving the ventilation drive unit 32 when the humidity state indicated by the humidity tendency information D21 switches from an inappropriate humidity state (high humidity state or low humidity state) to an appropriate humidity state.

[0072] The control device 4 may be configured, for example, to recognize that the humidity state indicated by the humidity tendency information has switched to an appropriate humidity state or an inappropriate humidity state (a high humidity state or a low humidity state) by repeatedly referring to the humidity tendency information D21 at predetermined timings, or may be configured to receive a notification indicating that the information set in the humidity tendency information D21 has switched.

[0073] The concentration adjustment process is a process in which the state of the ventilation control unit 45 is switched in response only to changes in the carbon dioxide concentration state within the cultivation chamber 2, and the humidity adjustment process is a process in which the state of the ventilation control unit 45 is switched in response only to changes in the humidity state within the cultivation chamber 2, but within the cultivation chamber 2, the carbon dioxide concentration state and the humidity state each change independently.

[0074] The priority adjustment process is a process that is configured taking such an environment into consideration.

[0075] More specifically, the priority adjustment process of the ventilation control unit 45 is configured to set the humidity adjustment process to a state (priority state) in which the humidity adjustment process is not performed when inappropriate concentration information (high concentration information or low concentration information) is set in the concentration tendency information D11, and to set the humidity adjustment process to a state in which the humidity adjustment process can be performed when appropriate concentration state information is set in the concentration tendency information D11.

[0076] In other words, the priority adjustment process of the ventilation control unit 45 is configured to maintain the state in which the ventilation means 3 is switched to the ventilation state while high concentration information or low concentration information is set in the concentration tendency information D11, even if appropriate humidity information is set in the humidity tendency information D21, or even if the information set in the humidity tendency information D21 switches from high humidity information or low humidity information to appropriate humidity information.

[0077] The above is the configuration of the plant cultivation equipment 1 according to this embodiment. Next, a description will be given of examples of the operation of the plant cultivation equipment 1. Note that Fig. 5 shows a list of examples of the operation of the plant cultivation equipment 1.

[0078] When the carbon dioxide concentration state in the cultivation chamber 2 is appropriate and the humidity state is also appropriate (see C1 in Figure 3), a carbon dioxide concentration value within the appropriate range (below the upper concentration threshold and below the lower concentration threshold) is set in the concentration measurement value information D10, and appropriate concentration information is set in the concentration trend information D11.

[0079] Moreover, a humidity value within an appropriate range (below the upper humidity threshold and below the lower humidity threshold) is set in the humidity measurement value information D20, and appropriate humidity information is set in the humidity tendency information D21.

[0080] And the ventilation means 3 is in a non-ventilation state.

[0081] When the carbon dioxide concentration and humidity in the cultivation chamber 2 switch from a state in which both are at an optimum humidity level to a high or low concentration state (see C1 and C2 in Figure 3), a carbon dioxide concentration value exceeding the upper concentration threshold is set in the concentration measurement value information D10, and high concentration information is set in the concentration trend information D11.

[0082] At this time, in the concentration adjustment process, the control device 4 outputs a drive command to the ventilation drive unit 32, thereby switching the ventilation means 3 to the ventilation state.

[0083] Furthermore, the control device 4 is switched to a priority state in which the humidity adjustment process is not executed in order to execute the priority adjustment process. Therefore, even if the humidity tendency information D21 is set to appropriate humidity information or the information set in the humidity tendency information D21 is changed from high humidity information or low humidity information to appropriate humidity information (see C2 and C3 in FIG. 3), the state in which the ventilation means 3 is switched to the ventilation state is maintained.

[0084] When the carbon dioxide concentration state in the cultivation chamber 2 switches from a high concentration state or a low concentration state to an appropriate concentration state (see C2, C1 in Figure 3), a carbon dioxide concentration value within a range below the upper concentration threshold and above the lower concentration threshold is set in the concentration measurement value information D10, and the appropriate concentration information D1 is set in the concentration trend information D11.

[0085] At this time, in the concentration adjustment process, the control device 4 outputs a stop command to the ventilation drive unit 32, thereby switching the ventilation means 3 to a non-ventilation state.

[0086] Moreover, the control device 4 cancels the priority state by executing the priority adjustment process, and returns to a state in which the humidity adjustment process can be executed.

[0087] When the humidity state in the cultivation chamber 2 switches from the appropriate humidity state where the carbon dioxide concentration and humidity in the cultivation chamber 2 are both in the appropriate humidity state to a high humidity state or a low humidity state (see C4 and C5 in Figure 4), a humidity value exceeding the upper humidity threshold is set in the humidity measurement value information D20, and high humidity information is set in the humidity trend information D21.

[0088] At this time, in the humidity adjustment process, the control device 4 outputs a drive command to the ventilation drive unit 32, thereby switching the ventilation means 3 to the ventilation state.

[0089] Then, when the humidity state within the cultivation chamber 2 returns to an appropriate humidity state from a high or low humidity state (see C5, C4 in Figure 4), the control device 4 outputs a stop command to the ventilation drive unit 32 in the humidity adjustment process, thereby switching the ventilation means 3 to a non-ventilation state.

[0090] On the other hand, if the carbon dioxide concentration state in the cultivation chamber 2 switches to a high or low concentration state before the humidity state in the cultivation chamber 2 returns to an appropriate humidity state from a high or low humidity state (see C5 and C26 in Figure 4), the control device 4 switches to a priority state in which humidity adjustment processing is not performed in order to perform priority adjustment processing.

[0091] Therefore, even in this case, even if the information set in the humidity tendency information D21 changes from high humidity information or low humidity information to appropriate humidity information, the state in which the ventilation means 3 is switched to the ventilation state is maintained.

[0092] When the carbon dioxide concentration state in the cultivation chamber 2 switches from a high concentration state or a low concentration state to an appropriate concentration state (see C6 and C5 in Figure 4), the control device 4 cancels the priority state by executing a priority adjustment process, and returns to a state in which humidity adjustment process can be executed.

[0093] Then, when the humidity state within the cultivation chamber 2 returns to an appropriate humidity state from a high or low humidity state (see C5, C4 in Figure 4), the control device 4 outputs a stop command to the ventilation drive unit 32 in the humidity adjustment process, thereby switching the ventilation means 3 to a non-ventilation state.

[0094] As described above, according to the plant cultivation equipment 1 of this embodiment, if the carbon dioxide concentration state in the cultivation chamber 2 becomes an inappropriate concentration state, the ventilation means 3 can be switched to a ventilation state through the concentration adjustment process of the control means, thereby returning the carbon dioxide concentration state in the cultivation chamber 2 to an appropriate concentration state, and if the humidity state in the cultivation chamber 2 becomes an inappropriate humidity state, the ventilation means 3 can be switched to a ventilation state through the humidity adjustment process of the control means, thereby returning the humidity state in the cultivation chamber 2 to an appropriate humidity state.

[0095] Furthermore, when the carbon dioxide concentration state in the growth chamber 2 is an inappropriate concentration state (when the concentration information D1 (concentration trend information D11 in this embodiment) indicates that the carbon dioxide concentration in the growth chamber 2 is inappropriate), the ventilation control unit 45 executes a priority adjustment process to switch to a priority state, thereby maintaining the state in which the ventilation means 3 is switched to the ventilation state regardless of the humidity state in the growth chamber 2 indicated by the humidity information D2, and therefore the carbon dioxide concentration state in the growth chamber 2 can be returned to an appropriate concentration state with priority, making it easier to maintain an appropriate condition inside the growth chamber 2, which is the growth environment for plants.

[0096] As a result, the plant cultivation equipment 1 of the present embodiment can provide the excellent effect of easily adjusting the carbon dioxide concentration and humidity in the plant cultivation environment to appropriate states.

[0097] Furthermore, when the concentration information D1 indicates that the carbon dioxide concentration in the growth chamber 2 is inappropriate, the ventilation control unit 45 is configured to switch the ventilation means 3 to a ventilation state regardless of whether the humidity in the growth chamber 2 indicated by the humidity information D2 is appropriate or inappropriate. Therefore, by prioritizing the carbon dioxide concentration state over adjusting the humidity to an appropriate state, it becomes easier to maintain the inside of the growth chamber 2 in a state more suitable for growing plants.

[0098] Furthermore, the concentration determination unit 43 is configured to determine that the carbon dioxide concentration in the cultivation chamber 2 is appropriate when the concentration information D1 is below the concentration upper limit threshold for determining that the carbon dioxide concentration in the cultivation chamber 2 is appropriate, and to determine that the carbon dioxide concentration in the cultivation chamber 2 is inappropriate when the concentration information D1 exceeds the concentration upper limit threshold.Since it is determined whether the carbon dioxide concentration in the cultivation chamber 2 is appropriate or inappropriate based on the concentration upper limit threshold, it becomes easier to prevent the cultivation chamber 2 from falling into a state that has a negative impact on plant cultivation.

[0099] In addition, the humidity determination unit 44 is configured to determine that the humidity in the cultivation chamber 2 is appropriate when the humidity information D2 is below the humidity upper threshold value for determining that the humidity in the cultivation chamber 2 is appropriate, and to determine that the humidity in the cultivation chamber 2 is inappropriate when the humidity information D2 exceeds the humidity upper threshold value.Therefore, since it is determined whether the humidity in the cultivation chamber 2 is appropriate or inappropriate based on the humidity upper threshold value, it becomes easier to prevent the cultivation chamber 2 from falling into a state that has a negative impact on plant growth.

[0100] The plant cultivation facility according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0101] Although the cultivation room 2 in the above embodiment is installed indoors (air-conditioned room 50 in building 5), the present invention is not limited to this configuration. For example, the cultivation room 2 may be installed outdoors. In this case, when the ventilation means 3 is switched to the ventilation state, the air in the cultivation room 2 is replaced with unconditioned outdoor air.

[0102] In the ventilation means 3 of the above embodiment, the ventilation drive unit 32 is attached to the exhaust path 30 out of the exhaust path 30 and the intake path 31, but is not limited to this configuration. For example, the ventilation drive unit 32 may be attached to the intake path 31 out of the exhaust path 30 and the intake path 31, or the ventilation drive unit 32 may be attached to both the exhaust path 30 and the intake path 31.

[0103] The ventilation means 3 in the above embodiment is configured to have the ventilation drive unit 32 for creating an air flow, but is not limited to this configuration. The ventilation means 3 may be configured to open and close the exhaust path 30 and the intake path 31, for example, without the ventilation drive unit 32, as long as it can replace the air inside the cultivation chamber 2 with the air outside the cultivation chamber 2.

[0104] In the control device 4 of the above embodiment, the concentration determination unit 43 is configured separately from the concentration information acquisition unit 40 and the ventilation control unit 45, but is not limited to this configuration. For example, the control device 4 may be configured so that the concentration determination unit 43 is included in the concentration information acquisition unit 40 or the ventilation control unit 45.

[0105] In the control device 4 of the above embodiment, the humidity determination unit 44 is configured separately from the humidity information acquisition unit 41 and the ventilation control unit 45, but is not limited to this configuration. The control device 4 may be configured to be included in the humidity determination unit 44 and the humidity information acquisition unit 41, or may be configured to be included in the ventilation control unit 45, for example. [Explanation of symbols]

[0106] 1...plant cultivation equipment, 2...cultivation room, 3...ventilation means, 4...control device, 5...building, 20...exhaust hole, 21...intake hole, 30...exhaust path, 31...intake path, 32...ventilation drive unit, 40...concentration information acquisition unit, 41...humidity information acquisition unit, 41...humidity information acquisition unit, 42...storage unit, 43...concentration determination unit, 44...humidity determination unit, 45...ventilation control unit, 50...air-conditioned room, 320...drive source, 321...driven rotating unit, 500...air-conditioning equipment, D1...concentration information, D1...concentration measurement value information, D1...appropriate concentration information, D10...concentration measurement value information, D11...concentration trend information, D2...humidity information, D20...humidity measurement value information, D21...humidity trend information, P...planter equipment, S1...carbon dioxide concentration sensor, S2...humidity measurement sensor, S2...humidity sensor

Claims

1. a cultivation room having a space therein for cultivating plants; a ventilation means capable of switching between a ventilation state in which the inside of the cultivation chamber is ventilated and a non-ventilation state in which the inside of the cultivation chamber is not ventilated; A storage unit that stores concentration information indicating a state of a carbon dioxide concentration in the cultivation chamber and humidity information indicating a state of humidity in the cultivation chamber; A ventilation control unit that controls switching the state of the ventilation means to the ventilation state or the non-ventilation state based on the concentration information and the humidity information stored in the memory unit, When the concentration information indicates that the carbon dioxide concentration in the cultivation chamber is inappropriate, the ventilation control unit switches the ventilation means to the ventilation state even if the humidity information indicates that the humidity in the cultivation chamber is appropriate. Equipment for growing plants.

2. the ventilation control unit is configured to switch the ventilation means to the ventilation state when the concentration information indicates that the carbon dioxide concentration in the cultivation chamber is inappropriate, regardless of whether the humidity in the cultivation chamber indicated by the humidity information is appropriate or inappropriate.

2. The plant growing facility according to claim 1.

3. a concentration determination unit that determines whether the carbon dioxide concentration in the cultivation chamber is appropriate or inappropriate based on the concentration information; the concentration determination unit is configured to determine that the carbon dioxide concentration in the cultivation chamber is appropriate when the concentration information is equal to or less than a concentration upper limit threshold for determining that the carbon dioxide concentration in the cultivation chamber is appropriate, and to determine that the carbon dioxide concentration in the cultivation chamber is inappropriate when the concentration information exceeds the concentration upper limit threshold. The plant growing facility according to claim 1 or 2.

4. a humidity determination unit that determines whether the humidity in the cultivation chamber is appropriate or inappropriate based on the humidity information; the humidity determination unit is configured to determine that the humidity in the cultivation chamber is in an appropriate state when the humidity information is equal to or lower than a humidity upper threshold for determining that the humidity in the cultivation chamber is appropriate, and to determine that the humidity in the cultivation chamber is in an inappropriate state when the humidity information exceeds the humidity upper threshold. The plant growing facility according to claim 1 or 2.

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