JP2017136041A - Control apparatus and agricultural house - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control apparatus for performing heating control capable of suppressing overshoot of room temperature due to the influence of outside air temperature.SOLUTION: According to the present invention, an arithmetic processing unit 21 of a control apparatus 2 obtains a startup delay time by the use of the outside air temperature, the startup delay time being a time at which, from the startup of a heater 36 at the present time, the effect of a rise in temperature due to the activation appears in the change of room temperature. The arithmetic processing unit 21 predicts a future room temperature for startup after the startup delay time from the time of startup and obtains a stop delay time using the outside air temperature, the stop delay time being a time at which, from the stop of the heater 36 at the present time, the effect of a decrease in temperature due to the stop appears in the change of room temperature. The arithmetic processing unit 21 predicts a future room temperature for stop after the stop delay time from the time of stop. An I/F unit 20 controls the activation of the heater 36 at the timing of activation determined based on the startup delay time, and controls the stop of the heater 36 at the stop timing determined based on the stop delay time.SELECTED DRAWING: Figure 1

Description

  The disclosure in this specification relates to a control device and an agricultural house for controlling an environment in a house where crops are grown.

  Patent Document 1 discloses an air conditioning system that performs air conditioning in an agricultural house using a heat pump air conditioner and an oil-fired warm air machine. The oil-fired hot air fan starts operation when the room temperature in the house becomes lower than the first set temperature, and stops when the temperature becomes equal to or higher than the first set temperature. The heat pump air conditioner starts operation when the room temperature falls below a second set temperature that is 2 ° C. to 3 ° C. higher than the first set temperature, and stops when the room temperature becomes equal to or higher than the second set temperature.

JP 2012-16315 A

  As in Patent Document 1, when heating a room by combining a heat pump type air conditioner that operates based on the set operating temperature range and an oil-fired hot air fan, each heating device can be operated efficiently. So difficult to control. There are the following specific problems.

  One problem is that the indoor temperature is affected by the outside air temperature and overshoots to the high temperature side and the low temperature side. In an agricultural house that performs indoor heating with a heating device, the individual heating devices start to operate at the heating start temperature and stop at the heating stop temperature so that the indoor temperature approaches the set temperature. Control to feed back temperature.

  However, since the temperature response delay of each heating device differs depending on the outside air temperature and season, the indoor temperature may overshoot in the ON / OFF heating control. For example, in the winter season when the outside air temperature is low, if the heating operation is started when the room temperature decreases to the heating start temperature, it takes more time than the intermediate period until the room temperature continues to decrease and starts to increase. As described above, in the winter season, after the heating operation is started, the room temperature greatly overshoots below the heating activation temperature, and then the temperature starts to rise. In the intermediate periods such as spring and autumn, the outdoor temperature is higher than that in the winter, and therefore the response delay time of the room temperature is reduced. In addition, if a heating system that has been tuned for the heating start temperature and the heating stop temperature in consideration of the response delay time in winter, the room temperature changes to a higher temperature and overshoots to a higher temperature than in winter. become.

  The other is, for example, a problem that a specific heating device frequently stops in hybrid heating control that controls a plurality of heating devices in which different operating temperature ranges are individually set.

  According to Patent Document 1, the oil-fired hot air fan is switched between start and stop with a first set temperature as a boundary, and the heat pump air conditioner has a second set temperature that is higher than the first set temperature as a boundary. Switching between start and stop. When the room temperature is lower than the first set temperature and heating air conditioning is required, the heating operation is performed by both the oil-fired hot air fan and the heat pump air conditioner. When the room temperature rises and exceeds the first set temperature, the oil-fired hot air fan is stopped, and the heating operation of only the heat pump air conditioner is performed. Further, when the room temperature rises and becomes equal to or higher than the second set temperature, the heat pump air conditioner stops and the heating operation ends. When the heating operation ends, the room temperature decreases, and when the temperature becomes lower than the second set temperature, the heat pump air conditioner is activated again. Thus, according to patent document 1, the heat pump type air conditioner with a smaller heating capability among a plurality of heating devices frequently stops. In addition, for example, if the heating device that stops frequently is a device that requires time for the next activation, it interferes with the hybrid heating control.

  The 1st objective of the indication in this specification is providing the control apparatus and agricultural house which perform the heating control which can suppress the overshoot of the indoor temperature by the influence of outside temperature.

  The second object of the disclosure in this specification is to provide a control device and an agricultural house that can suppress frequent operation stoppage of a specific heating device in hybrid heating control for controlling a plurality of heating devices having different operating temperature ranges. That is.

  A plurality of aspects disclosed in this specification adopt different technical means to achieve each purpose. In addition, the reference numerals in the parentheses described in the claims and in this section are examples showing the correspondence with the specific means described in the embodiments described later as one aspect, and limit the technical scope. is not.

One of the control devices that achieve the above-mentioned object is a control for heating and air-conditioning the interior of the house by controlling the heating devices (35, 36) in the agricultural house (1) for growing the crop (4). A device (2) comprising:
The start-up delay time, which is the time from when the heating device is started until the temperature rise effect due to start-up appears in the change in the room temperature, is determined using the outside air temperature, and the future room temperature for start-up after the start-up delay time from the start-up is calculated. Use the outside temperature to calculate the stop delay time, which is the time from when the heater is turned off or until the temperature drop effect due to the stop appears in the change in room temperature, and for the stop after the stop delay time from the stop. An arithmetic processing unit (21) for predicting the future indoor temperature;
The start of the heating device is controlled at the start timing determined according to the future room temperature predicted based on the start delay time, or the stop time of the heating device is determined according to the future room temperature predicted based on the stop delay time. And a control output unit (20) for controlling the stop.

  According to this control device, by determining the start delay time or the stop delay time using the outside air temperature, it is possible to appropriately predict the future indoor temperature for starting or the future indoor temperature for stopping that varies depending on the outside air temperature or the season. it can. Since the heating device is activated at the activation timing determined according to the future indoor temperature for activation, it is possible to suppress overshooting of the indoor temperature to the low temperature side at various outdoor temperatures. Alternatively, since the heating device is stopped at the stop timing determined according to the future indoor temperature for stopping, overshooting of the indoor temperature to the high temperature side can be suppressed at various outside air temperatures. Therefore, it is possible to provide a control device that performs heating control that can suppress overshoot of the indoor temperature due to the influence of the outside air temperature.

One of the control devices that achieve the above-mentioned another purpose is to heat the interior of the house by controlling a plurality of heating devices (35, 36) in the agricultural house (1) for growing the crop (4). A control device (2) for air conditioning,
A determination unit that determines whether or not the room needs to be heated and air-conditioned when heating and air-conditioning is not being performed, and determines whether or not the heating capacity is insufficient during the heating and air-conditioning with respect to the set temperature in the room ( 21) and
A control output unit (20) that performs heating operation so that the first heating device (35) is given priority among the plurality of heating devices when the heating air-conditioning is required, and the indoor temperature approaches the set temperature;
With
The control output unit further starts the heating operation of the second heating device (36) so that the room temperature approaches the set temperature when the heating capacity is insufficient with respect to the set temperature during the heating operation of the first heating device. If the heating capacity is excessive with respect to the set temperature during the heating operation of the first heating device and the second heating device, the heating operation of the second heating device is stopped.

  According to this control device, when heating is necessary, the first heating device is preferentially operated for heating, so the first heating device is first operated when heating starts. When the heating capacity is insufficient during the heating operation of the first heating device, the heating operation of the second heating device is started in addition to the heating operation of the first heating device. If the heating capacity is excessive during the heating operation of the first heating device and the second heating device, the heating operation of the second heating device is stopped. With this control, the first heating device stops when the room temperature rises due to the heating operation combining the first heating device and the second heating device, and the first heating device is turned off when the room temperature falls again. Frequent driving changes can be prevented in situations such as restarting. Therefore, in hybrid heating control for controlling a plurality of heating devices having different operating temperature ranges, it is possible to provide a control device capable of suppressing frequent operation stop of a specific heating device.

  One of the agricultural houses is a heating device (35, 36) for heating and air-conditioning the interior of the house, an indoor temperature sensor (56) for detecting the indoor temperature, and an outdoor temperature sensor (54) for detecting the outside air temperature. ) And the control device (2) described above.

  As a result, frequent operation stoppage of a specific heating device in an agricultural house that can perform heating control capable of suppressing overshoot of the indoor temperature due to the influence of outside air temperature or a hybrid heating control that controls a plurality of heating devices with different operating temperature ranges It is possible to provide an agricultural house capable of suppressing the above.

It is the schematic shown about the agricultural house which concerns on 1st Embodiment, and its control structure. It is the main flowchart which showed the heating control of 1st Embodiment. It is the flowchart which showed the algorithm of the single heating control of a heat pump apparatus. It is the flowchart which showed the algorithm of the independent heating control of a heater. It is the flowchart which showed the algorithm of hybrid heating control. It is the time chart which showed the relationship between room temperature change and a driving | running state regarding the independent heating control of a heat pump apparatus. It is a control map for calculating starting delay time in individual heating control of a heat pump device. It is a control map for calculating stop delay time in the independent heating control of the heat pump apparatus. It is the time chart which showed the relationship between room temperature change and a driving | running state regarding the independent heating control of a heater. It is a control map for calculating starting delay time in independent heating control of a heater. It is a control map for calculating stop delay time in the independent heating control of a heater. It is a time chart for demonstrating the necessity determination process of the heat pump apparatus start regarding hybrid heating control. It is a time chart for demonstrating the necessity determination process of a heater start regarding hybrid heating control. It is the time chart which showed the relationship between room temperature change and a driving | running state regarding hybrid heating control.

(First embodiment)
The agricultural house 1 as one form is disclosed in 1st Embodiment. The agricultural house 1 controls the inside of the house to an appropriate environment for growth by the control device 2 for the purpose of growing a predetermined crop 4 in the house. The environmental factors to be controlled are, for example, room temperature, humidity, carbon dioxide concentration, solar radiation amount, etc. in the house. The control device 2 controls the operation of various temperature adjusting devices, humidity adjusting devices, air flow adjusting devices, carbonic acid concentration adjusting devices, water supply adjusting devices, solar radiation amount adjusting devices and the like in order to properly control these environmental factors. It can be an environmental control controller.

  A first embodiment will be described with reference to FIGS. Agricultural house 1 has various sensors that measure wind direction, wind speed, sunshine, precipitation, indoor temperature, humidity, carbon dioxide concentration in house, opening and closing of skylight and curtain of house, control of air conditioner, mist Various control devices for generating gas, generating carbon dioxide, and the like, and a control device 2 are provided. The control device 2 automatically outputs control signals corresponding to control indices obtained from the measured values of a plurality of locations related to the indoor environment inside the house body 3 to various adjustment devices so that the growth environment of the crop 4 is optimized. Control. The measurement values related to the indoor environment provided at a plurality of locations are detection values of the temperature sensor and the humidity sensor. Therefore, the temperature sensor and the humidity sensor detect respective measured values at locations separated from each other in the house.

  The house body 3 includes, for example, a frame configured by combining metal members as structural materials, and a covering material supported by the frame. As the covering material, a transparent synthetic resin film or glass is used. The house main body 3 illustrated in FIG. 1 integrally includes a gable-like roof portion and two sets of side wall portions that support the roof portion and face each other, but this form is an example, and the house main body 3 This is not to limit the configuration of 3. Moreover, it does not prevent using other materials for the house main body 3, or forming in another shape.

  The crop 4 is cultivated on a soil in a predetermined container such as a bed 38 provided in the house body 3. When the nutrient solution containing water and fertilizer is supplied to the soil through the pipe by the water feeder 37, the crop 4 grows by absorbing nutrients from the soil. For example, a predetermined number of beds 38 are arranged in a row at equal intervals in the house.

  The water supply machine 37 is a water supply pump controlled by the control device 2. The control device 2 operates the water supply 37 at a predetermined time zone in one day to supply a target amount of nutrient solution to the soil. The control device 2 controls the water feeder 37 so as to increase or decrease the supply amount of the nutrient solution with respect to the target amount according to the amount of solar radiation detected by the solar radiation sensor 52.

  The circulation fan 33 is a blower installed at a position higher than the crop 4, the temperature sensor 56, the humidity sensor 57, the carbon dioxide sensor 58, the side window 31, and the like in the upper part of the house body 3. The circulation fan 33 is controlled by the control device 2, and circulates the gas in the house main body 3 to be distributed throughout. In this way, the circulation fan 33 constitutes an airflow forming device that forms an airflow in the house body 3 and around the crop 4, and promotes adjustment of humidity, temperature, carbon dioxide concentration, etc. in the house. It also contributes to promoting growth. Moreover, it is preferable that the circulation fan 33 is installed in a form in which a place where an airflow is formed in the house can be selected. It is preferable.

  The control apparatus 2 calculates | requires a control parameter | index using each measured value of the temperature sensor 56, the humidity sensor 57, and the carbon dioxide sensor 58 which are provided with two or more, respectively. The control device 2 operates the circulation fan 33 according to the control index obtained from the measured values in a plurality of locations in the house body 3 to increase or decrease the room temperature in the house, and to adjust the carbon dioxide concentration and humidity to the house. Control to make uniform inside. For example, the control device 2 determines the control index by calculation for obtaining a maximum value, a minimum value, a difference, an average value, and the like for a plurality of measurement values.

  The plurality of temperature sensors 56 and the plurality of humidity sensors 57 form a relatively air current such as a center where the air flow is difficult to be formed, such as the four corners of the house in the plan view and the vicinity of the side wall, and the air flow is stagnation easily. It is installed in both places where it is easy to be done. For this reason, the temperature sensor 56 and the humidity sensor 57 contribute to the environmental control of the house from multiple viewpoints. The control apparatus 2 determines a control parameter | index by the calculation mentioned above using each measured value of these sensors.

  The mist generator 34 includes a mist tube installed at a position higher than the crop 4, the humidity sensor 57, and the side window 31 in the upper part of the house. The mist tube has a plurality of nozzles attached to the wall of the tube to be watered, and is configured such that water is sprayed from the nozzles by adjusting the pressure that is passed through the tube by a pump or the like. Yes. Therefore, since the mist tube ejects water in the form of a mist, the mist falls from the upper part in the house over a relatively long time, and the humidity in the house can be gradually increased. Furthermore, by operating the circulation fan 33 together with the mist ejection by the mist generator 34, the mist can be quickly spread in the house, and the humidity can be accelerated.

  The mist generator 34 is controlled by the control device 2. For example, the control device 2 controls the mist generator 34 to operate in a predetermined time zone of the day to eject a target amount of fog so that the humidity environment in the house falls within the target range. The control device 2 controls the humidity environment in the house within the target range by adjusting the amount of mist ejected by the mist generator 34 according to the control index obtained from the measured humidity values at a plurality of locations in the house.

  The control device 2 controls the mist generator 34 so as to adjust the supply amount of the mist with respect to the target amount in accordance with the amount of solar radiation detected by the solar radiation sensor 52. When the relative humidity in the house measured by the humidity sensor 57 is low, the control device 2 operates the mist generator 34 to supply mist into the house and perform control to increase the relative humidity. The mist generator 34 is operated mainly when humidification is performed. However, the mist generator 34 can be operated as a temperature lowering device that lowers the room temperature by promoting vaporization heat action by supplying mist into the house.

  The house body 3 is provided with a curtain 32 that can be opened and closed between a closed state in which external light incident from the roof portion is blocked and an open state in which the crop 4 is irradiated without external light incident from the roof portion. ing. The curtain 32 is a light shielding member having a function of adjusting the amount of solar radiation flowing into the house, and is used in combination with a cooling device or a heating device to keep the house cool or warm. Furthermore, the roof part of the house main body 3 is provided with a skylight 30 that can be opened and closed, and by adjusting the opening amount of the skylight 30, it is possible to adjust the air ventilation resistance and the ventilation amount when taking outside air into the house. The side wall 31 of the house body 3 is provided with a side window 31 that can be opened and closed, and by adjusting the opening amount of the side window 31, it is possible to adjust the air ventilation resistance and the ventilation amount when taking outside air into the house. . In other words, the skylight 30 and the side window 31 are windows that can control the amount of air flowing in and out of the house.

  Each of the curtain 32, the skylight 30, and the side window 31 is driven by a power source such as a motor and is controlled by the control device 2. When the curtain 32 is opened and closed, the amount of solar radiation flowing into the house from outside is adjusted, and the rate of temperature rise can be adjusted for the room temperature in the house. Therefore, the control device 2 controls to drive the curtain 32 in the closing direction when the temperature in the house is lowered, and to drive the curtain 32 in the opening direction when increasing the temperature in the house. . However, when using together with a heating device or when the outside air temperature is lower than the room temperature, the control device 2 controls the curtain 32 to be closed and keeps the heat.

  For example, the skylight 30 and the side window 31 are opened and closed so that the room temperature in the house approaches the target temperature during the daytime, and is closed at night and in the winter. The control device 2 adjusts the opening / closing amounts of the skylight 30, the side window 31, the curtain 32, etc. according to the control index obtained from the measured temperature values at a plurality of locations in the house body 3, and targets the temperature environment in the house. Control to range.

  By adjusting the opening degree of the skylight 30 and the side window 31, the speed at which outside air is taken into the house body 3 can be adjusted. Moreover, the skylight 30 and the side window 31 can adjust the temperature using the temperature difference between the inside and outside of the house body 3 by taking outside air into the internal space of the house body 3.

  The circulation fan 33, the skylight 30 and the side window 31 constitute an airflow forming device in the agricultural house 1. Moreover, the skylight 30 and the side window 31 can also comprise an airflow formation apparatus independently, even if the circulation fan 33 is not drive | operating. That is, when the circulation fan 33 is operated and the skylight 30 and the side window 31 are open, the outside air can be forcibly taken into the house body 3 and an airflow including the outside air inflow can be formed in the house. . When the skylight 30 and the side window 31 are open, outside air having a flow velocity of a certain level or more can be taken into the house body 3 depending on the external wind direction, and an air flow including inflow of outside air can be formed in the house. The circulation fan 33 is thus used as an air flow forming device and can be used not only for adjusting the room temperature and humidity, but also for diffusing carbon dioxide in the house.

  The agricultural house 1 includes a heat pump device 35 that functions as an air conditioner capable of supplying warm air and cold air into the house. The heat pump device 35 can perform a heating operation for heating the room and a cooling operation for cooling the room. Therefore, the heat pump device 35 is one of a plurality of heating devices provided in the agricultural house 1. The main body of the heat pump device 35 is installed outside the house, and the conditioned air can be blown to an arbitrary predetermined position such as around the crop 4 through a duct extending from the main body. The ambient temperature of the crop 4 can be controlled by the conditioned air from the heat pump device 35.

  The heat pump device 35 constitutes a cycle in which the refrigerant circulates in a circuit in which a plurality of heat exchangers, a compressor, a decompression device, and the like are connected in a ring shape. The heat pump device 35 is a first heating device that heats air by the heat radiation action of the refrigerant circulating in the circuit. The heat pump device 35 functions as a temperature raising device when the outside air heated by the heat radiating heat exchanger by the heat radiating action of the refrigerant is blown as warm air, and the outside air cooled by the cooling heat exchanger by the heat absorbing action of the refrigerant. Functions as a temperature lowering device. The heat pump device 35 can also function as a dehumidifying device that absorbs moisture from room air and dehumidifies the inside of the house.

  When the heat pump device 35 performs the heating operation, the indoor temperature increases, so the relative humidity in the house decreases. Therefore, the heat pump device 35 functions as a humidity adjusting device that can adjust the relative humidity in the house by dehumidifying operation or heating operation. The control device 2 controls the operation of the heat pump device 35 according to the control index obtained from the measured values at a plurality of locations in the house body 3, and controls the temperature environment and humidity environment in the house to the target range.

  The agricultural house 1 includes a heater 36 that can supply warm air into the house. The heater 36 is an air conditioner that can blow warm air to a predetermined position such as around the crop 4. The heater 36 functions as a temperature raising device that can raise the temperature around the crop 4 with the heating air. Therefore, the heater 36 is one of a plurality of heating devices provided in the agricultural house 1.

  For example, the heater 36 supplies air heated by an electric heater, a hot water heater, a combustion heater, or the like into the house. It is the 2nd heating apparatus which heats air using the heater 36, electricity, warm water, or fuel. When the heater 36 performs the heating operation, the indoor temperature increases, so the relative humidity in the house decreases. Therefore, the heater 36 functions as a humidity adjusting device that can adjust the relative humidity in the house. The control device 2 controls the heater 36 so that the room temperature around the crop 4 is maintained at a target temperature suitable for growth. The control device 2 controls the operation of the heater 36 and the like according to the control index obtained from the measured values at a plurality of locations in the house body 3, and controls the temperature environment and humidity environment in the house to the target range.

  The agricultural house 1 includes a carbon dioxide generator 39 that supplies carbon dioxide into the house. In order to promote photosynthesis, the control device 2 controls the carbon dioxide generator 39 so as to keep the carbon dioxide concentration in the house, particularly around the crop 4 appropriately. For example, the control device 2 operates the carbon dioxide generator 39 during a predetermined time of the day to adjust the carbon dioxide concentration in the house to a target value. The carbon dioxide generator 39 is a photosynthesis promoting device. The control device 2 controls the operation of the carbon dioxide generator 39 in accordance with the control index obtained from the measured values of the carbon dioxide concentration at a plurality of locations in the house body 3 to bring the carbon dioxide concentration environment in the house into the target range. Control. The carbon dioxide generator 39 can raise the room temperature by generating carbon dioxide. The carbon dioxide generator 39 is one of a plurality of heating devices provided in the agricultural house 1.

  The agricultural house 1 includes a plurality of various sensors that measure environmental information related to the growth of the crop 4. The various sensors include, for example, a wind direction sensor 50, a wind speed sensor 51, a solar radiation sensor 52, a raindrop sensor 53, an outdoor temperature sensor 54, an outdoor humidity sensor 55, an indoor temperature sensor 56, an indoor humidity sensor 57, and a carbon dioxide sensor 58. It is an environmental sensor in the agricultural house 1 including the above.

  The wind direction sensor 50 detects the wind direction outside the house body 3. The wind direction information detected by the wind direction sensor 50 is input to the control device 2 and is used for opening control of these windows as the wind direction with respect to the skylight 30 and the side window 31. The wind speed sensor 51 detects the wind speed outside the house body 3. The wind speed information detected by the wind speed sensor 51 is input to the control device 2 and used for opening control of these windows as the wind speed for the skylight 30 and the side window 31.

  The solar radiation sensor 52 detects the amount of solar radiation falling on the house body 3. The amount of solar radiation information detected by the solar radiation sensor 52 is input to the control device 2 and used for estimating the amount of heat flowing into the house, and used for opening / closing control of the curtain 32 and room temperature control. The detected amount of solar radiation can also be used to determine whether it is rainy or at night, and during sunny days.

  The raindrop sensor 53 is a rain detection sensor provided outside the house body 3 and capable of detecting the presence or absence of rainfall. When rain is detected by the raindrop sensor 53, the skylight 30 and the side window 31 are controlled to be closed in order to prevent raindrops from being directly applied to the crop. This prevents crops from becoming sick. The raindrop sensor 53 is, for example, a sensor that detects rain adhering to the panel as moisture, and detects electrical resistance between predetermined electrodes. The detected value of electrical resistance is input to the control device 2, and the control device 2 determines that rain is currently falling when the detected value is equal to or less than a certain resistance value. The raindrop sensor 53 may be a sensor that detects rain adhering to the panel as water pressure. In this case, the pressure detected by the raindrop sensor 53 is input to the control device 2, and the control device 2 determines that it is currently raining when the detected value is equal to or greater than a certain pressure value.

  The temperature sensor 54 detects the temperature of the outside air outside the house body 3 and sends it to the control device 2. The humidity sensor 55 detects the humidity of the outside air outside the house body 3 and sends it to the control device 2. The plurality of temperature sensors 56 detect the temperature inside the house body 3, for example, the temperature around the crop 4, and send the temperature environment value to the control device 2. The plurality of humidity sensors 57 are humidity detection means for detecting the humidity in the room of the house body 3, for example, the humidity around the crop 4, and sends the humidity environment value to the control device 2. The plurality of carbon dioxide sensors 58 are carbon dioxide concentration detection means for detecting the carbon dioxide concentration in the room of the house body 3, for example, the carbon dioxide concentration around the crop 4, and sends the carbon dioxide environment value to the control device 2.

  The environment in which the crop 4 grows in the house body 3 changes by controlling various temperature adjusting devices, humidity adjusting devices, air volume adjusting devices, carbonic acid concentration adjusting devices, water supply adjusting devices, solar radiation amount adjusting devices, and the like. As described above, the temperature adjusting device includes the skylight 30, the side window 31, the curtain 32, the circulation fan 33, the mist generator 34, the heat pump device 35, the heater 36, and the like that can be controlled to adjust the room temperature in the house. Can be configured. The humidity adjusting device can be configured by a mist generator 34, a heat pump device 35, a heater 36, a dehumidifier 40, and the like that can be controlled to adjust the relative humidity in the house. The air volume adjusting device can be configured by a skylight 30, a side window 31, a circulation fan 33, and the like that can be controlled to form an air flow in the house.

  Further, the carbonic acid concentration adjusting device can be configured by a carbon dioxide generator 39 or the like controlled to adjust the carbon dioxide concentration in the house. Further, the water supply adjustment device can be constituted by a water supply 37 that is controlled to adjust water supply to the crop 4. The solar radiation amount adjusting device can be configured by a curtain 32 that can be controlled to adjust the solar radiation amount flowing into the house.

  The control device 2 adjusts the water supply pressure of the water supply 37, opens and closes the curtain 32, adjusts the opening amounts of the skylight 30 and the side window 31, a circulation fan 33, a mist generator 34, a carbon dioxide generator 39, a heater 36, In addition, each operation and stop of the heat pump device 35 are controlled. An electromagnetic relay that turns on and off the power supply to each device is used to start and stop energization of each adjusting device. The control device 2 is housed in a housing installed inside the house body 3 or outside the house body 3.

  The control device 2 includes a device such as a microcomputer that operates according to a program as a main hardware element. The control device 2 includes an interface unit 20 (hereinafter also referred to as an I / F unit 20) to which each adjustment device and various sensors described above are connected, an arithmetic processing unit 21, a storage unit 22 that stores various data, Is provided. The arithmetic processing unit 21 performs determination processing and arithmetic processing according to a predetermined program using environment information acquired from various sensors through the I / F unit 20 and various data stored in the storage unit 22. The arithmetic processing unit 21 is a determination unit and an arithmetic processing unit in the control device 2. The arithmetic processing unit 21 executes a program stored in a non-transitional tangible recording medium. By executing this program, a method corresponding to the program is executed. The I / F unit 20 operates each adjustment device described above based on the determination result and the calculation result by the calculation processing unit 21. Therefore, the I / F unit 20 is an input unit and a control output unit in the control device 2.

  The I / F unit 20 is connected to a terminal device serving as a user interface, such as a personal computer 23, a control panel, and a portable terminal. The user can use the operation panel of the control device 2, the operation unit of the personal computer 23, the control panel, the terminal device, etc. to set the environment such as the room temperature in the house, set the time, etc. The current operating state can be confirmed through the screen.

  The means and / or functions provided by the control device 2 can be provided by software recorded in a substantial memory device and a computer that executes the software, only software, only hardware, or a combination thereof. . For example, when the control device 2 is provided by an electronic circuit that is hardware, it can be provided by a digital circuit including a large number of logic circuits, or an analog circuit.

  Next, an example of the heating control executed by the control device 2 will be described with reference to the flowcharts of FIGS. 2 to 5 and FIGS. This heating control is one of the environmental controls in the house that is always performed to promote the growth of the crop 4.

  FIG. 2 is a flowchart of the heating control that can be switched to the individual heating operation of the heater 36, the individual heating operation of the heat pump device 35, and the hybrid heating operation in which the heat pump device 35 and the heater 36 are combined. This heating control is always performed if the agricultural house 1 is growing the crop 4. The processing shown in FIG. 2 is executed by the control device 2 and is repeatedly performed at predetermined time intervals.

  The arithmetic processing unit 21, which is a determination unit, determines in step 10 whether or not the heater 36 is installed, in other words, whether or not it is usable. If it is determined that the heater 36 is not installed, it is determined in step 15 whether or not the heat pump device 35 is installed. If it determines with the heat pump apparatus 35 not being installed, it will return to step 10 again and will repeatedly perform the flowchart of FIG. If it is determined that the heat pump device 35 is installed, an independent heating control routine of the heat pump device is executed in step 30. When the control of step 30 is executed, the process returns to step 10 again, and the flowchart of FIG. 2 is repeatedly executed.

  If it is determined in step 10 that it is installed, it is determined in step 20 whether or not the heat pump device 35 is installed. If it is determined that the heat pump device 35 is not installed, a single heating control routine for the heater is executed in step 40. When the control of step 40 is executed, the process returns to step 10 again, and the flowchart of FIG. 2 is repeatedly executed. If it is determined in step 20 that the heat pump device 35 is installed, a hybrid heating control routine is executed in step 50. When the control of step 50 is executed, the process returns to step 10 again, and the flowchart of FIG. 2 is repeatedly executed. Moreover, you may replace the determination whether it is the installation state in step 10,15,20 with the determination whether the starting permission flag has come out about each heating apparatus.

  When heating is necessary, the control device 2 first operates the heat pump device 35 with priority, and when the heating capacity is insufficient with the heat pump device 35 alone, the control device 2 operates the heater 36 and the heat pump device 35. Combined hybrid heating control is executed. The control device 2 performs the independent control of each heating device, the hybrid heating control, etc., thereby eliminating the situation where the control temperature range varies due to the difference in season and outside air temperature as described above, and is stable throughout the year. Realize heating control.

  FIG. 3 is a flowchart according to the single heating control of the heat pump device 35. When executing step 30 of FIG. 2, the control device 2 executes an algorithm according to the flowchart of FIG.

  In step 300, the arithmetic processing unit 21 calculates a temperature differential value THD2m from the current room temperature and the room temperature two minutes before the past. The temperature differential value THD2m is a value that becomes a positive number when the current room temperature is lower than the room temperature two minutes ago, and is a negative number when the room temperature has increased. As the indoor temperature at this time, the temperature of the indoor air detected by the plurality of temperature sensors 56 is used. For the room temperature, an average value of a plurality of measurement values or a higher or lower value of the plurality of measurement values is used. Moreover, the indoor temperature of the past 2 minutes for calculating the temperature differential value THD2m is an example, and is not limited to 2 minutes before, but the indoor temperature of the past predetermined time may be adopted.

  In step 310, it is determined whether or not the heat pump device 35 is stopped. When it is determined that the heat pump device 35 is in a stopped state, the process proceeds to step 320, where it is determined whether THD2m is 0 or more. If THD2m is a negative number, this flowchart ends. When THD2m is equal to or greater than 0, the room temperature is in a state of decreasing. Therefore, in order to calculate an appropriate timing for starting the heat pump device 35, the start delay time HPonL is calculated in step 321.

  The startup delay time HPonL is a time until the indoor temperature that has been lowered starts to rise after the heat pump device 35 is activated. The startup delay time HPonL is also a time delay when the heating effect due to startup appears in the room temperature with respect to the startup time. The startup delay time HPonL can also be said to be a startup dead time from when the heat pump device 35 is started until the room temperature rises. Such activation delay time HPonL is the time until the temperature increase effect due to activation of the heat pump device 35 appears in the change in the room temperature.

  The future indoor temperature THfHP1 when the activation delay time HPonL has elapsed is predicted by performing a predetermined calculation process to be described later using the activation delay time HPonL obtained in step 321. The control device 2 always predicts the future indoor temperature THfHP1 for activation using the temperature change rate of the indoor temperature. The control device 2 determines an appropriate activation timing of the heat pump device 35 so that the room temperature THfHP1 in the future becomes a temperature included in the control temperature range to be controlled.

  The arithmetic processing unit 21 calculates the activation delay time HPonL using the control map shown in FIG. A control map as shown in FIG. 7 is stored in the storage unit 22 in advance. This control map is a control characteristic line representing a correlation between the difference between the set temperature TS set during the heating control and the outside air temperature TAM detected by the temperature sensor 54, and the startup delay time HPonL. HPonL (s) has a relationship that becomes longer as TS-TAM (° C.) increases. Therefore, the arithmetic processing unit 21 can obtain the activation delay time HPonL (s) by calculation using TS-TAM (° C.) and the control characteristic line stored in the storage unit 22. When the value of TS-TAM is a negative number, the calculation is performed with TS-TAM set to 0.

  In step 322, the arithmetic processing unit 21 uses the current room temperature and the temperature differential value THD2m obtained in step 300 to calculate the room temperature after the activation delay time HPonL from the present time, that is, the future room temperature THfHP1. This is because the temperature after a predetermined time can be estimated from the temperature decrease rate by calculation using the temperature differential value.

  In the next step 323, it is determined whether or not the future room temperature THfHP1 is smaller than a value obtained by subtracting the predetermined startup temperature HPonDF from the set temperature TS. The starting predetermined temperature HPonDF is a predetermined temperature for setting the lower limit value of the control temperature range to be controlled. The value of TS-HPonDF is preferably set to a temperature slightly higher than the lower limit value of the control temperature range. The value of TS-HPonDF may be set to the lower limit value of the control temperature range.

  If THfHP1 is greater than the value of TS-HPonDF, which is the start determination temperature, in step 323, the process ends without starting the heat pump device 35. When THfHP1 falls below the value of TS-HPonDF, a process of starting the heat pump device 35 is executed in step 324, and this flowchart is ended. That is, as shown in FIG. 6, the operation of the heat pump device 35 is started at a timing when the future indoor temperature THfHP1 coincides with or falls below the set temperature TS. By this determination process, the control device 2 has a timing corresponding to the outdoor temperature that varies depending on the season, and as shown in FIG. 6, the room is included in a predetermined temperature range on the low temperature side with respect to the set temperature TS. The temperature can be controlled.

  If it is determined in step 310 that the heat pump device 35 is not in the stopped state, the process proceeds to step 330, and it is determined whether THD2m is less than zero. When THD2m is 0 or a positive number, this flowchart ends. If THD2m is a negative number, the room temperature is rising, so that in order to calculate an appropriate timing for stopping the heat pump device 35, a stop delay time HPoffL is calculated in step 331.

  The stop delay time HPoffL is a time from when the heat pump device 35 is stopped until the rising indoor temperature starts to decrease. The stop delay time HPoffL is also a time delay when the effect of the stop appears in the room temperature with respect to the stop time. The stop delay time HPoffL can also be said to be a stop dead time from when the heat pump device 35 is stopped until the room temperature decreases. Such a stop delay time HPoffL is a time until the temperature increase effect due to the stop of the heat pump device 35 appears in the change in the room temperature.

  By performing a predetermined calculation process to be described later using the stop delay time HPoffL obtained in step 331, the future indoor temperature THfHP2 when the stop delay time HPoffL has elapsed is predicted. The control device 2 always predicts the future indoor temperature THfHP2 for stopping by using the temperature change rate of the indoor temperature. The control device 2 determines an appropriate stop timing of the heat pump device 35 so that the room temperature THfHP2 in the future becomes a temperature included in the control temperature range to be controlled.

  The arithmetic processing unit 21 calculates the stop delay time HPoffL using the control map shown in FIG. A control map as shown in FIG. 8 is stored in the storage unit 22 in advance. This control map is a control characteristic line representing the correlation between the difference between the set temperature TS set during heating control and the outside air temperature TAM detected by the temperature sensor 54, and the stop delay time HPoffL. HPoffL (s) has a relationship of becoming shorter as TS-TAM (° C.) increases. Therefore, the calculation processing unit 21 can obtain the stop delay time HPoffL (s) by calculation using TS-TAM (° C.) and the control characteristic line stored in the storage unit 22.

  In step 332, the arithmetic processing unit 21 uses the current room temperature and the temperature differential value THD2m obtained in step 300 to calculate the room temperature after the stop delay time HPoffL from the present time, that is, the future room temperature THfHP2. In the next step 333, it is determined whether or not the future room temperature THfHP2 is equal to or higher than a value obtained by adding the stop predetermined temperature HPoffDF to the set temperature TS. The predetermined stop temperature HPoffDF is a predetermined temperature for setting an upper limit value of a control temperature range to be controlled. The value of TS + HPoffDF is preferably set to a temperature slightly lower than the upper limit value of the control temperature range. Further, the value of TS + HPoffDF may be set to the upper limit value of the control temperature range.

  If THfHP2 is smaller than the value of TS + HPoffDF, which is the stop determination temperature, in step 333, this flowchart is ended without stopping the heat pump device 35 in the operating state. When THfHP2 becomes equal to or greater than the value of TS + HPoffDF, a process of stopping the heat pump device 35 is executed in step 334, and this flowchart is ended. That is, as shown in FIG. 6, the operation of the heat pump device 35 is stopped when the future indoor temperature THfHP2 coincides with or exceeds the set temperature higher than the set temperature TS.

  With this determination process, the control device 2 determines the indoor temperature so that it is within a predetermined temperature range on the high temperature side with respect to the set temperature TS as shown in FIG. Can be controlled. As illustrated in FIG. 6, the control device 2 performs the single heating control of the heat pump device 35 as described above, and as shown in FIG. The room temperature can be controlled within the range of the temperature.

  FIG. 4 is a flowchart relating to the single heating control of the heater 36. When executing step 40 of FIG. 2, the control device 2 executes an algorithm according to the flowchart of FIG.

  In step 400, the arithmetic processing unit 21 calculates a temperature differential value THD2m from the current room temperature and the room temperature two minutes before the past. The temperature differential value THD2m is the same calculated value as the temperature differential value calculated in step 300.

  In step 410, it is determined whether or not the heater 36 is stopped. If it is determined that the heater 36 is in a stopped state, the process proceeds to step 420, where it is determined whether THD2m is 0 or more. If THD2m is a negative number in step 420, this flowchart is terminated. If THD2m is equal to or greater than 0, the room temperature is decreasing, and therefore, in order to calculate an appropriate timing for starting the heater 36, the start delay time HTonL is calculated in step 421.

  The startup delay time HTonL is a delay time from when the heater 36 is started until the descending room temperature starts to rise. The startup delay time HTonL can be said to be a startup dead time from when the heater 36 is started until the room temperature rises. Such a start delay time HTonL is a time until the temperature rise effect due to the start of the heater 36 appears in the change in the room temperature.

  By performing a predetermined calculation process to be described later using the startup delay time HTonL obtained in step 421, the future indoor temperature THfHT1 when the startup delay time HTonL has elapsed is predicted. The control device 2 always predicts the future indoor temperature THfHT1 for activation using the temperature change rate of the indoor temperature. The control device 2 determines an appropriate activation timing of the heater 36 so that the room temperature THfHT1 becomes a temperature included in a control temperature range to be controlled in the future.

  The arithmetic processing unit 21 calculates the activation delay time HTonL using the control map shown in FIG. A control map as shown in FIG. 10 is stored in the storage unit 22 in advance. This control map is a control characteristic line representing the correlation between the difference between the set temperature TS set during the heating control and the outside air temperature TAM detected by the temperature sensor 54, and the start-up delay time HTonL. HTonL (s) has a relationship that becomes longer as TS-TAM (° C.) increases. Therefore, the arithmetic processing unit 21 can obtain the activation delay time HTonL (s) by calculation using TS-TAM (° C.) and the control characteristic line stored in the storage unit 22.

  In step 422, the arithmetic processing unit 21 uses the current room temperature and the temperature differential value THD2m obtained in step 400 to calculate the room temperature after the activation delay time HTonL from the present time, that is, the future room temperature THfHT1.

  In the next step 423, it is determined whether or not the future room temperature THfHT1 is smaller than a value obtained by subtracting the predetermined startup temperature HTonDF from the set temperature TS. The starting predetermined temperature HTonDF is a predetermined temperature for setting a lower limit value of a control temperature range to be controlled. The value of TS-HTonDF is preferably set to a temperature slightly higher than the lower limit value of the control temperature range. The value of TS-HTonDF may be set to the lower limit value of the control temperature range.

  In step 423, when THfHT1 is larger than the value of TS-HTonDF, which is the starting determination temperature, the present flowchart is ended without starting the heater 36. When THfHT1 falls below the value of TS-HTonDF, a process of starting the heater 36 is executed in step 424, and this flowchart is ended. That is, as shown in FIG. 9, the operation of the heater 36 is started when the future indoor temperature THfHT1 coincides with or falls below the set temperature TS. With this determination process, the control device 2 determines the indoor temperature so that it is in a predetermined temperature range on the low temperature side with respect to the set temperature TS as shown in FIG. Can be controlled.

  If it is determined in step 410 that the heater 36 is not in the stopped state, the process proceeds to step 430, where it is determined whether THD2m is less than zero. When THD2m is 0 or a positive number, this flowchart ends. When THD2m is a negative number, since the room temperature is rising, a stop delay time HToffL is calculated in step 431 in order to calculate an appropriate timing for stopping the heater 36.

  The stop delay time HToffL is a delay time from when the heater 36 is stopped until the rising indoor temperature starts to decrease. The stop delay time HToffL can be said to be a stop dead time from when the heater 36 is stopped to when the room temperature decreases. Such a stop delay time HToffL is a time until the temperature increase effect due to the stop of the heater 36 appears in the change in the room temperature.

  By performing a predetermined calculation process to be described later using the stop delay time HToffL obtained in step 431, the future indoor temperature THfHT2 when the stop delay time HToffL has elapsed is predicted. The control device 2 always predicts the future indoor temperature THfHT2 for stopping using the temperature change rate of the indoor temperature. The control device 2 determines an appropriate stop timing of the heater 36 so that the room temperature THfHT2 becomes a temperature included in a control temperature range to be controlled in the future.

  The arithmetic processing unit 21 calculates the stop delay time HToffL using the control map shown in FIG. A control map as shown in FIG. 11 is stored in the storage unit 22 in advance. This control map is a control characteristic line representing the correlation between the difference between the set temperature TS set during heating control and the outside air temperature TAM detected by the temperature sensor 54 and the stop delay time HToffL. HToffL (s) has a relationship of becoming shorter as TS-TAM (° C.) increases. Therefore, the calculation processing unit 21 can obtain the stop delay time HToffL (s) by calculation using TS-TAM (° C.) and the control characteristic line stored in the storage unit 22.

  In step 432, arithmetic processing unit 21 calculates the indoor temperature after stop delay time HToffL from the present, that is, future indoor temperature THfHT 2, using the current indoor temperature and temperature differential value THD2m obtained in step 400. In the next step 433, it is determined whether or not the future room temperature THfHT2 is equal to or higher than a value obtained by adding the stop predetermined temperature HToffDF to the set temperature TS. The predetermined stop temperature HToffDF is a predetermined temperature for setting an upper limit value of a control temperature range to be controlled. The value of TS + HToffDF is preferably set to a temperature slightly lower than the upper limit value of the control temperature range. Further, the value of TS + HTonDF may be set to the upper limit value of the control temperature range.

  If THfHT2 is smaller than the value of TS + HToffDF, which is the stop determination temperature, in step 433, this flowchart is ended without stopping the heater 36 in the operating state. When THfHT2 becomes equal to or greater than the value of TS + HToffDF, a process of stopping the heater 36 is executed in step 434, and this flowchart is ended. That is, as shown in FIG. 9, the operation of the heater 36 is stopped when the future indoor temperature THfHT2 coincides with or exceeds the temperature set higher than the set temperature TS.

  With this determination process, the control device 2 determines the indoor temperature so that it is within a predetermined temperature range on the high temperature side with respect to the set temperature TS as shown in FIG. Can be controlled. As shown in FIG. 9, the control device 2 performs the above-described individual heating control of the heater 36, and as shown in FIG. 9, the upper limit temperature and the lower limit set with a predetermined temperature range both above and below the set temperature TS. The room temperature can be controlled within the range of the temperature. The control device 2 predicts a change in the room temperature based on characteristics such as a temperature response delay at the time of starting and stopping of each device in the control of the heat pump device 35 and the heater 36, and the startup determined based on the predicted value The aforementioned problems are solved by controlling the temperature and the stop temperature.

  FIG. 5 is a flowchart according to hybrid heating control. This hybrid heating control operates as shown in the time chart of FIG. When executing step 50 of FIG. 2, the control device 2 executes an algorithm according to the flowchart of FIG.

  In step 510, the arithmetic processing unit 21 determines whether or not the activation permission flag of the heater 36 is output. XHTon = 0 described in step 510 of FIG. 5 indicates that the heater 36 cannot be started. If NO is determined in step 510, it is determined that activation of the heater is permitted. In step 515, the heat pump device 35 is first activated to preferentially operate the heat pump device 35, and the process proceeds to step 550, where individual heating of the heater 36 is performed. Execute control. In step 550, as described above, the hybrid heating is performed by executing the single heating control algorithm of the heater 36 described with reference to FIGS. 4, 9, 10, and 11.

  If YES is determined in step 510, the process proceeds to step 520, and first, individual heating control of the heat pump device 35 is executed. Thereby, heating operation only by the heat pump apparatus 35 is performed. In step 520, as described above, the algorithm of the single heating control of the heat pump device 35 described with reference to FIGS. 3, 6, 7, and 8 is executed. Then, it is determined whether or not heating control by the heat pump device 35 and the heater 26 is permitted by the determination processing in the subsequent steps 530 and 540.

  In the next step 530, it is determined whether or not the continuous operation time HPonT of the heat pump device 35 has exceeded a predetermined determination time T1. If it is determined in step 530 that HPonT is less than T1, the process proceeds to step 580, a process of setting XHTon = 0 is executed, and this flowchart ends.

  If it is determined in step 530 that HPonT is equal to or greater than T1, in step 540, after starting the heat pump device 35, the average value TH4mav of the indoor temperature for 4 minutes is less than the value obtained by subtracting the predetermined startup temperature HPonDF from the set temperature TS. It is determined whether or not there is. The value of TS-HPonDF can be set to a slightly higher temperature than the lower limit value of the control temperature range. Further, the value of TS-HPonDF may be set to the lower limit value of the control temperature range. Further, the predetermined time for calculating the indoor temperature average value TH4mav is not limited to 4 minutes.

  If TH4mav is greater than or equal to the value of TS-HPonDF in step 540, the room temperature is within the control temperature range, so it is determined that the heating capacity is not insufficient and hybrid heating control is not permitted. Then, the process proceeds to step 580, a process of setting XHTon = 0 is executed, and this flowchart is ended.

  If TH4mav is lower than the value of TS-HPonDF at step 540, the room temperature is below the control temperature range as shown in FIG. Proceeding, the single heating control of the heater 36 is executed. Thereby, hybrid heating control is permitted and the heating operation by the heat pump device 35 and the heater 26 is performed.

  In a state where the heating operation by the heat pump device 35 and the heater 26 is performed, the control device 2 determines whether the heating capacity is excessive or not by the determination processing in the subsequent steps 560 and 570.

  In the next step 560, it is determined whether or not the continuous operation time HTonT of the heater 36 has exceeded a predetermined determination time T2. If it is determined in step 560 that HTonT is less than T2, the process proceeds to step 575, a process of setting XHTon = 1 is executed, and this flowchart is ended.

  If it is determined in step 560 that HTonT is equal to or greater than T2, in step 570, after starting the heater 36, the average value TH4mav of the indoor temperature for 4 minutes is equal to or greater than the value obtained by adding the stop predetermined temperature HToffDF from the set temperature TS. It is determined whether or not there is. The value of TS + HToffDF is preferably set to the upper limit value of the control temperature range. Similar to step 540, the predetermined time for calculating the average indoor temperature value TH4mav is not limited to 4 minutes.

  If TH4mav is less than TS + HToffDF in step 570, the room temperature is within the control temperature range, so it is determined that the heating capacity is not excessive, and in step 575, processing for setting XHTon = 1 is executed, and this flowchart is executed. Exit. If TH4mav is equal to or greater than the value of TS + HToffDF in step 570, it is determined that the heating capacity is excessive, and in step 575, processing for setting XHTon = 0 is executed, and this flowchart is ended. Therefore, in step 580, the operation of the heater 36 is prohibited, and the operation is switched to the heating operation of only the heat pump device 35. As a result of this processing, the heating capacity decreases, so the room temperature decreases with time and falls below the upper limit value of the control temperature range.

  As described above, the control device 2 preferentially operates the first heating device having a small heating capability among the plurality of heating devices, and then the second heating having the large heating capability when the heating capability is insufficient. Operate the device to make up for the lack of capacity. Further, when the heating capacity is excessive, the operation of the second heating device is stopped and the room temperature is adjusted to the control temperature range. Therefore, the control device 2 does not control the first heating device and the second heating device based on the predetermined operating temperature range, but operates one of the heating devices preferentially, so that the heating capacity is When it is insufficient or excessive, the other heating device is started and stopped.

  Next, the effect which the control apparatus 2 of 1st Embodiment brings is demonstrated. The arithmetic processing unit 21 obtains start-up delay times HPonL and HTonL, which are times from when the heating device is started to when the temperature rise effect due to the start appears in the change in room temperature, using the outside air temperature TAM. The arithmetic processing unit 21 predicts the future room temperatures THfHP1 and THfHT1 for activation after the activation delay time from the activation. Or the arithmetic processing part 21 calculates | requires stop delay time HPoffL and HToffL which are time until the temperature fall effect by a stop appears in the change of indoor temperature after stopping a heating apparatus using the outside temperature TAM. The arithmetic processing unit 21 predicts future indoor temperatures THfHP2 and THfHT2 for stopping after the stop delay time from the stop. The I / F unit 20 controls the start-up of the heating device at the start timing determined according to the future indoor temperature predicted based on the start delay time, or determined according to the future indoor temperature predicted based on the stop delay time. The stop of the heating device is controlled at the stopped timing.

  According to this control, since the start delay time or the stop delay time is obtained using the outside air temperature, it is possible to appropriately predict the future room temperature for start-up or the future room temperature for stop that varies depending on the outside air temperature or the season. Thereby, for example, it is possible to suppress variations and deviations in the control temperature between winter and intermediate periods. Furthermore, since the heating device is activated at the activation timing determined in accordance with the future indoor temperature for activation, it is possible to suppress the indoor temperature from greatly overshooting to the low temperature side regardless of the outside air temperature. Further, since the heating device is stopped at the stop timing determined according to the future indoor temperature for stopping, it is possible to suppress the room temperature from greatly overshooting to the high temperature side regardless of the outside air temperature. Therefore, it is possible to realize heating control that can suppress overshoot of the room temperature due to the influence of the outside air temperature.

  Further, the arithmetic processing unit 21 predicts the future indoor temperatures THfHP1 and THfHT1 for activation after the activation delay time from the activation, and obtains the stop delay times HPoffL and HToffL using the outside air temperature TAM. Then, the arithmetic processing unit 21 predicts future indoor temperatures THfHP2 and THfHT2 for stoppage after the stop delay time from the stop time. The I / F unit 20 controls the activation of the heating device at the activation timing determined according to the future indoor temperature predicted based on the start delay time, and is determined according to the future indoor temperature predicted based on the stop delay time. The stop of the heating device is controlled at the stopped timing.

  According to this control, since the start delay time and the stop delay time are obtained using the outside air temperature, it is possible to appropriately predict the start future indoor temperature and the stop future indoor temperature that vary depending on the outside air temperature and season. Thereby, for example, it is possible to suppress variations and deviations in the control temperature between winter and intermediate periods on both the upper limit side and the lower limit side of the indoor control temperature range. Therefore, the heating control which can suppress the overshoot of the indoor temperature due to the influence of the outside air temperature on both the upper limit side and the lower limit side can be realized.

  Further, the arithmetic processing unit 21 activates the heating device when it determines that the future indoor temperatures THfHP1 and THfHT1 predicted for activation at the present time are lower than the activation determination temperature set lower than the indoor set temperature by a predetermined temperature. To do. The arithmetic processing unit 21 stops the heating device when it is determined that the future indoor temperatures for stoppage THfHP2 and THfHT2 predicted at the present time are higher than the determination temperature for stoppage set higher by a predetermined temperature than the indoor set temperature. According to this, it is possible to control the room temperature so as to be within the set temperature range where it is desired to control.

  The activation determination temperature is set to the lower limit value of the indoor set temperature range by the user's setting action. The stop determination temperature is set to the upper limit value of the indoor temperature setting range by the user's setting action. According to this, it is possible to control the temperature so as to start at the lower limit value of the set temperature range and stop at the upper limit value of the set temperature range.

  In addition, the arithmetic processing unit 21 obtains the start delay time using a control map that represents the relationship between the difference between the indoor set temperature and the outside air temperature and the start delay time, and calculates the difference between the indoor set temperature and the outside air temperature. The stop delay time is obtained by using a control map representing the relationship with the stop delay time. According to this, heating control with high reproducibility can be performed by a control map stored in advance based on experimental values and experience values.

  The control device 2 determines whether or not the room needs to be heated and air-conditioned when the heating and air-conditioning is not being performed, and determines whether or not the heating capacity is insufficient during the heating and air-conditioning with respect to the indoor set temperature. An arithmetic processing unit 21 for determining is provided. The control device 2 includes an I / F unit 20 that performs a heating operation so that the room temperature approaches the set temperature with priority given to the heat pump device 35 among the plurality of heating devices when heating and air conditioning is required.

  The I / F unit 20 further starts the heating operation of the heater 36 when the heating capacity is insufficient with respect to the indoor set temperature during the heating operation of the heat pump device 35 so that the indoor temperature approaches the set temperature. Control. During the heating operation of the heat pump device 35 and the heater 36, when the heating capacity is excessive with respect to the indoor set temperature, the heating operation of the heater 36 is stopped.

  According to this control device, when heating is necessary, the heat pump device 35 having a smaller heating capacity is preferentially operated for heating, so the heat pump device 35 is first operated at the start of heating. When the heating capacity is insufficient during the heating operation of the heat pump device 35, in addition to the heating operation of the heat pump device 35, the heating operation of the heater 36 having the larger heating capacity is started. When the heating capacity is excessive during the heating operation of the heat pump device 35 and the heater 36, the heating operation of the heater 36 is stopped. With this control, when the room temperature rises due to the heating operation combining both heating devices, the heat pump device 35 with the smaller heating capacity stops, and when the room temperature falls again, the heat pump device 35 is re-run. It is possible to prevent frequent changes in driving. The heat pump device 35 is useful because it is a device that takes time to restart.

  The agricultural house 1 includes a heating device that heats and air-conditions the interior of the house, an indoor temperature sensor 56 that detects the indoor temperature, an outdoor temperature sensor 54 that detects the outside air temperature, and the control device 2. . According to this, frequent use of a specific heating device in an agricultural house that can perform heating control that can suppress overshoot of the indoor temperature due to the influence of the outside air temperature or a hybrid heating control that controls a plurality of heating devices having different operating temperature ranges. To provide an agricultural house that can suppress outages.

(Other embodiments)
The disclosure of this specification is not limited to the illustrated embodiments. The disclosure encompasses the illustrated embodiments and variations by those skilled in the art based thereon. For example, the disclosure is not limited to the combination of components and elements shown in the embodiments, and various modifications can be made. The disclosure can be implemented in various combinations. The disclosure may have additional parts that can be added to the embodiments. The disclosure includes those in which the components and elements of the embodiment are omitted. The disclosure encompasses parts, element replacements, or combinations between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. The technical scope disclosed is indicated by the description of the scope of claims, and should be understood to include all modifications within the meaning and scope equivalent to the description of the scope of claims.

  In the above-described embodiment, the start predetermined temperature HPonDF and the stop predetermined temperature HPoffDF may be the same value or different values. Moreover, the predetermined temperature for start-up HTonDF and the predetermined temperature for stop-off HToffDF may be the same value or different values.

  In the above-described embodiment, the control device 2 may include the I / F unit 20 that preferentially performs the heating operation of the heater 36 among the plurality of heating devices when heating air conditioning is required. The I / F unit 20 further starts the heating operation of the heat pump device 35 when the heating capacity is insufficient during the heating operation of the heater 36. When the heating capacity is excessive during the heating operation of the heat pump device 35 and the heater 36, the heating operation of the heat pump device 35 is stopped.

The room temperature constantly monitored in the heating control of the above-described embodiment may employ a detection value by the temperature sensor 56 or may be detected by a temperature detection device provided in each heating device.
In step 20 and step 20A, control of either a window or a curtain has been described, but a plurality of windows, curtains, and dehumidifiers may be controlled. In this case, it is possible to quickly realize a situation in which condensation is unlikely to occur.

  In the above-described embodiment, it is described that the temperature sensor 56 and the humidity sensor 57 detect the indoor environment at two predetermined locations in the room. However, the number of installation locations of these sensors may be one, or two or more. It may be.

  In the above-described embodiment, the control device 2 may be configured to receive outputs from various sensors and to give instructions to each adjustment device through an interface unit included in the personal computer or an interface unit added to the personal computer. Good. That is, the personal computer can function as the control device 2 by executing the program on the personal computer.

  In the above-described embodiment, the I / F unit 20 of the control device 2 may include a communication interface unit that acquires weather forecast information from the outside. In this case, the control device 2 predicts the ambient humidity of the crop 4 from the weather forecast information acquired through the I / F unit 20 and adjusts the amount of water supplied to the bed 38 by the water feeder 37 based on the prediction result. be able to.

  In the above-described embodiment, it is described that the tomato is an example of the crop 4, but the crop 4 is not limited to the tomato, and may be other vegetables and fruits.

DESCRIPTION OF SYMBOLS 1 ... Agricultural house, 2 ... Control apparatus, 4 ... Crop 20 ... Interface part (control output part), 21 ... Operation processing part (determination part)
35 ... Heat pump device (heating device, first heating device)
36 ... Heating machine (heating device, second heating device)

Claims (7)

In the agricultural house (1) for growing the crop (4), a control device (2) for controlling the heating device (35, 36) and heating and air-conditioning the interior of the house,
The activation delay time, which is the time from when the heating device is activated until the temperature rise effect due to the activation appears in the change in room temperature, is determined using the outside air temperature, and the future for activation after the activation delay time from the activation The stop delay time, which is the time from when the room temperature is predicted or when the heating device is stopped until the temperature lowering effect due to the stop appears in the change in the room temperature, is calculated using the outside air temperature. An arithmetic processing unit (21) for predicting a future indoor temperature for stopping after a time;
Control the start-up of the heating device at the start timing determined according to the future room temperature predicted based on the start delay time, or stop determined according to the future room temperature predicted based on the stop delay time A control output unit (20) for controlling the stop of the heating device at a timing;
A control device comprising:   The arithmetic processing unit controls to start the heating device when it is determined that the predicted future indoor temperature for activation is lower than a determination temperature for activation set lower than a set temperature in the room by a predetermined temperature. Or when the predicted future room temperature for stopping exceeds the stop determination temperature set higher by a predetermined temperature than the set temperature in the room, the heating device is controlled to stop. The control apparatus according to 1.   The arithmetic processing unit obtains the activation delay time using a control map representing a relationship between the difference between the indoor set temperature and the outside air temperature and the activation delay time, and calculates the indoor set temperature and the outside air temperature. The control device according to claim 1, wherein the stop delay time is obtained using a control map representing a relationship between the difference and the stop delay time. In the agricultural house (1) for growing the crop (4), a control device (2) for heating and air-conditioning the interior of the house by controlling a plurality of heating devices (35, 36),
Judgment whether or not the room needs to be heated and air-conditioned when heating and air-conditioning is not performed, and determination whether or not the heating capacity is insufficient during the heating and air-conditioning with respect to the set temperature in the room Part (21);
A control output unit (20) that performs heating operation so that the temperature of the room is brought close to the set temperature in preference to the first heating device (35) among the plurality of heating devices when heating air conditioning is required;
With
The control output unit is
When the heating capacity of the first heating device is insufficient with respect to the set temperature during the heating operation of the first heating device, the heating operation of the second heating device (36) is further started so as to bring the indoor temperature closer to the set temperature. Control
A control device that stops the heating operation of the second heating device when the heating capacity is excessive with respect to the set temperature during the heating operation of the first heating device and the second heating device. The first heating device is a device having a smaller heating capacity among the plurality of heating devices,
The control device according to claim 4, wherein the second heating device is a device having a heating capacity larger than that of the first heating device.   The first heating device is a heat pump device that heats air by a heat dissipation action of a refrigerant circulating in the circuit, and the second heating device is a heater that heats air using electricity, hot water, or fuel. Item 6. The control device according to Item 5. An agricultural house (1) for controlling the indoor environment inside the house for growing crops (4),
A heating device (35, 36) for heating and air-conditioning the interior of the house;
An indoor temperature sensor (56) for detecting the indoor temperature;
An outdoor temperature sensor (54) for detecting the outside air temperature;
A control device (2) according to any one of claims 1 to 6;
Agricultural house equipped with.

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