JP7493743B2 - Agricultural greenhouse ventilation window control system and ventilation window control method - Google Patents

Description

The present invention relates to a ventilation window control system and a ventilation window control method for an agricultural greenhouse.

In agricultural greenhouses, the temperature and humidity are measured to cultivate crops under optimal environmental conditions, and so-called "environmental control" is carried out to maintain these conditions by opening and closing ventilation windows (skylights, observation windows, etc.), heat-retaining curtains, blackout curtains, etc., and operating heaters and fans. In particular, temperature and humidity control inside the greenhouse is generally carried out by opening and closing ventilation windows, but the cultivation environment inside the greenhouse is also often affected by the wind blowing into the greenhouse through the ventilation windows.

Therefore, various opening and closing control systems for ventilation windows (skylights, observation windows, etc.) that take into account the effects of wind direction and wind speed have been disclosed (see, for example, Patent Documents 1 and 2). The greenhouse skylight control device disclosed in Patent Document 1 is a device that controls skylights installed on both sides of the greenhouse roof, and is characterized by having a wind sensor that detects the direction and strength of the wind, a rain sensor that detects rain, and opening and closing control means that closes the skylight on the windward side when the strength of the wind from upwind detected by the wind sensor exceeds a first set value, and closes both skylights when it exceeds a second set value that is greater than the first set value or when the rain sensor detects rain.

According to the greenhouse skylight control device of Patent Document 1, which has the above configuration, when the wind from upwind is particularly strong and exceeds a first set value, instead of closing both skylights, only the skylight on the windward side is closed and the skylight on the leeward side can be used for temperature control as is, so that the skylights can be effectively controlled according to the wind direction, strength, and rain conditions, and plants can be placed in an optimal environmental condition for growth.

The temperature control device for agricultural facilities disclosed in Patent Document 2 monitors at least the temperature, air volume, and wind direction, and operates ventilation devices installed on the roof and sides of the agricultural facility to let in and block outside air into the agricultural facility, thereby controlling the temperature inside the agricultural facility. The temperature control device for agricultural facilities is characterized by selecting the ventilation devices on the roof and sides according to the respective conditions of temperature, air volume, and wind direction, and performing optimal ventilation control.

The temperature control device for agricultural facilities according to Patent Document 2, which has the above-mentioned configuration, is described as having the excellent effect of reducing the impact of wind on crops and agricultural facilities, eliminating temperature imbalances within the agricultural facility, and providing efficient ventilation control according to the situation.

Japanese Patent Application Laid-Open No. 62-6614 JP 2018-78818 A

The greenhouse skylight control device disclosed in Patent Document 1 and the agricultural facility temperature control device disclosed in Patent Document 2 are believed to be able to control the opening and closing of ventilation windows to a certain extent depending on wind direction and wind speed. However, these opening and closing controls basically close the ventilation window when it is directly affected by the wind, so it is difficult to perform fine opening and closing control for wind acting on the ventilation window from all directions.

In particular, because wind direction and speed change from moment to moment, if more precise and detailed opening and closing control were possible, damage to the ventilation windows could be prevented, and the precision of environmental control within the greenhouse could be improved, providing a more comfortable growing environment for agricultural crops.

In view of the above problems, the inventors of the present application conducted extensive research to provide a ventilation window control system and ventilation window control method for agricultural greenhouses that can perform more precise and detailed opening and closing control in response to ever-changing wind direction and speed conditions, and as a result, they arrived at the present invention.

That is, the present invention is a ventilation window control system that automatically controls the opening degree of a ventilation window in an optimal manner based on environmental information inside and outside an agricultural greenhouse, and is configured to include at least an anemometer installed outside the greenhouse, an interior sensor that measures environmental information inside the greenhouse, and a ventilation window control device that controls the opening degree of the ventilation window, and the ventilation window control device has an input section to which the wind direction measurement value and wind speed measurement value measured by the anemometer, the interior environmental information measurement value measured by the interior sensor, and the current opening degree of the ventilation window are input, and the ventilation window control device divides all directions on a horizontal plane into a plurality of directions based on the direction that is most affected by the wind when the ventilation window is open, and controls the opening degree of each of the directions. The system is characterized by comprising a wind influence setting unit that sets the influence of wind, a calculation unit that calculates the influence of wind from the wind direction measurement value, the wind speed measurement value, and the influence of wind, a determination unit that compares the environmental information measurement value with a preset environmental information set value for the house and determines whether the environmental information measurement value is within the range of the environmental information set value, a ventilation window opening setting unit that sets a corrected opening degree of the ventilation window so that the environmental information measurement value falls within the range of the environmental information set value when the environmental information measurement value is outside the range of the environmental information set value, and corrects the corrected opening degree by the wind influence value to set a corrected opening degree of the ventilation window, and an output unit that sends the corrected opening degree to the ventilation window.

The ventilation window control system for an agricultural greenhouse of the present invention further includes an outside temperature gauge installed outside the greenhouse, and the ventilation window control device further includes an outside temperature influence setting unit that presets an outside temperature influence for each specified outside temperature measurement range based on the relationship between the outside temperature and the opening degree of the ventilation window, and the input unit further inputs an outside temperature measurement value measured by the outside temperature gauge, the calculation unit further calculates an outside temperature influence value from the outside temperature measurement value and the outside temperature influence degree, and the ventilation window opening setting unit further corrects the corrected opening degree by the outside temperature influence value to set a re-corrected opening degree.

Furthermore, the present invention is a ventilation window control method for automatically optimally controlling the opening degree of a ventilation window based on environmental information inside and outside an agricultural greenhouse, comprising an environmental information setting value input step for inputting an environmental information setting value inside the greenhouse; an influence degree setting step for dividing all directions on a horizontal plane into a plurality of directions based on the direction most affected by wind when the ventilation window is open, and setting the influence degree of wind for each of the directions; an information acquisition step for acquiring wind direction measurement values and wind speed measurement values measured by an anemometer installed outside the greenhouse, environmental information measurement values measured by a sensor inside the greenhouse, and the current opening degree of the ventilation window; and The method includes a calculation step of calculating a wind influence value from the wind speed measurement value and the wind influence degree, a determination step of comparing the environmental information measurement value with the environmental information set value to determine whether the environmental information measurement value is within the range of the environmental information set value, a ventilation window opening setting step of setting a corrected opening degree of the ventilation window and correcting the corrected opening degree by the wind influence value so that the environmental information measurement value falls within the range of the environmental information set value when the environmental information measurement value is outside the range of the environmental information set value, and setting a corrected opening degree of the ventilation window by correcting the corrected opening degree by the wind influence value, and an output step of sending the corrected opening degree to the ventilation window.

In addition, in the influence setting step of the ventilation window control method of the present invention, an outside temperature influence is set for each predetermined outside temperature measurement range based on the relationship between the outside temperature outside the house and the opening degree of the ventilation window, an outside temperature measurement value measured by an outside temperature gauge installed outside the house is further acquired in the information acquisition step, an outside temperature influence value is further calculated from the outside temperature measurement value and the outside temperature influence degree in the calculation step, and a re-corrected opening degree is set by further correcting the corrected opening degree of the ventilation window by the outside temperature influence value in the ventilation window opening setting step.

The ventilation window control system and ventilation window control method for an agricultural greenhouse of the present invention can perform more precise and detailed opening and closing control in response to the ever-changing wind direction and speed conditions. This not only prevents the ventilation window from being damaged by the effects of wind, but also reduces the effects of wind on agricultural crops and allows for more precise environmental control within the greenhouse, providing a more comfortable cultivation environment for agricultural crops.

In addition, in the ventilation window control system and ventilation window control method for an agricultural greenhouse of the present invention, the opening and closing of the ventilation windows is controlled taking into account the effects of outside air temperature, which makes it possible to suppress the effects of wind on agricultural crops and to control the environment inside the greenhouse with even greater precision.

1 is a schematic block diagram showing the overall configuration of a ventilation window control system for an agricultural greenhouse according to one embodiment of the present invention. 1 is a front view of an agricultural house according to an embodiment of the present invention. FIG. 3 is a plan view of the agricultural house shown in FIG. 2 . FIG. 11 is a schematic block diagram showing the overall configuration of a ventilation window control system for an agricultural greenhouse according to another embodiment of the present invention. 2 is a schematic flow diagram showing a ventilation window control method by the ventilation window control system for the agricultural greenhouse shown in FIG. 1. 5 is a schematic flow diagram showing a ventilation window control method by the ventilation window control system for the agricultural greenhouse shown in FIG. 4.

The following is a detailed description of an embodiment of the agricultural greenhouse ventilation window control system of the present invention, based on the drawings. FIG. 1 is a block diagram showing the overall configuration of an agricultural greenhouse ventilation window control system 10 according to one embodiment of the present invention. As shown in the figure, the ventilation window control system 10 of this embodiment is a ventilation window control system that automatically controls the optimal opening degree of the ventilation window 40 based on environmental information inside and outside the agricultural greenhouse 1 as shown in FIG. 2, and is mainly composed of an anemometer 20 installed outside the greenhouse 1, an in-house sensor 30 that measures environmental information inside the greenhouse 1, and a ventilation window control device 50 that controls the opening degree of the ventilation window 40.

Typically, environmental information within the greenhouse 1 is extremely diverse, and examples of such information include temperature, humidity, amount of solar radiation, culture medium temperature, plant body temperature, irrigation temperature, soil moisture, _CO2 concentration, and irrigation amount within the greenhouse 1. These pieces of environmental information are measured by various in-house sensors 30 installed within the greenhouse 1, but in this embodiment, a commonly used thermometer is installed to measure the temperature within the greenhouse 1 (temperature within the greenhouse).

The ventilation window control device 50 is a control device for automatically controlling the opening degree of the ventilation window 40, and includes at least an input unit 51, a wind influence setting unit 52, a judgment unit 53, a calculation unit 54, a ventilation window opening degree setting unit 55, and an output unit 56.

The input unit 51 of the ventilation window control device 50 receives the wind direction and wind speed measurements taken by the anemometer 20 installed outside the house 1, the environmental information measurements taken by the in-house sensor 30, and the state (current opening) of the ventilation window 40. For example, if the in-house sensor 30 is a thermometer, the temperature inside the house 1 is measured as the environmental information measurement and input to the input unit 51.

The wind influence setting unit 52 divides all directions on the horizontal plane into multiple directions based on the direction most affected by the wind when the ventilation window 40 is open, and sets the wind influence degree for each direction. More specifically, in the house 1 shown in FIG. 2, when the ventilation window 40 is open, the wind is most affected when it blows from right to left in the figure (direction A in the figure). FIG. 3 is a plan view of the house 1 shown in FIG. 2, and FIG. 2 is a front view of the house 1 shown in FIG. 3, as seen from the bottom in the figure. As shown in FIG. 3, when the ventilation window 40 is open, the house 1 is most affected by the wind from direction A (which is assumed to be an east wind in the figure).

Therefore, in the house 1 according to this embodiment, the east direction is used as a reference and all directions on the horizontal plane of the house 1 are divided into a plurality of directions. In FIG. 3, all directions on the horizontal plane of the house 1 are divided into four directions, and the east direction E, which is most affected by the wind, is used as a reference and the wind influence degree of the east direction (direction E) is set to 1.0. Then, the wind influence degree of the west direction (direction W), which is least affected by the wind compared to the direction E, is set to, for example, 0.2. In addition, for the north direction (direction N) and south direction (direction S), which are less affected by the wind than the direction E, the wind influence degree of the direction N is set to, for example, 0.5 and the wind influence degree of the direction S is set to 0.3, taking into account the topography and climate where the house 1 is installed. In this way, by previously setting the influence of the wind acting on the ventilation window 40 as the "wind influence degree" in the wind influence degree setting unit 52, it becomes possible to easily reflect the influence of the wind acting on the ventilation window 40 when setting the opening degree of the ventilation window 40 in the ventilation window opening degree setting unit 55 described later. In the above embodiment, all directions on the horizontal plane of the house 1 are divided into four, the wind influence of the reference direction (direction E in this embodiment) is set to 1.0, and the wind influence of the other directions is set as direction N = 0.5, direction S = 0.3, and direction W = 0.2. However, the number of divisions is not limited to four, and may be, for example, two, or may be divided into five or more. The wind influence can also be set appropriately depending on the topography, climate, season, etc. of the installation location of the house 1.

The judgment unit 53 compares the environmental information measurement value in house 1 with a preset environmental information set value in house 1 to judge whether the environmental information measurement value is within the range of the environmental information set value. For example, if it is desired to set the temperature inside house 1 to 25°C, the target temperature inside house 1 (environmental information set value = 25°C) is input from the target environmental information input unit 57 to the judgment unit 53. Then, the environmental information measurement value (temperature inside house 1) obtained from the input unit 51 is compared with the environmental information set value to judge whether the environmental information measurement value is within the range of the environmental information set value (for example, the measured temperature inside house 1 = 25°C ± 0.5°C).

In the calculation unit 54, the "wind influence value" is calculated from the wind direction measurement value and wind speed measurement value measured by the anemometer 20 and the wind influence degree set in the wind influence degree setting unit 52. More specifically, for example, in FIG. 3, when the wind direction measurement value measured by the anemometer 20 is east-northeast, the east-northeast wind corresponds to the direction E, so the wind influence degree is 1.0. Then, when the wind influence degree is determined from the wind direction measurement value, the wind influence value is calculated from this wind influence degree and the wind speed measurement value. On the other hand, when the wind direction measurement value measured by the anemometer 20 is west-southwest, the west-southwest wind corresponds to the direction W, so the wind influence degree is 0.2, and the wind influence value is calculated from this wind influence degree and the wind speed measurement value. When these two wind influence values are compared, the wind influence value related to the direction E is greater than the wind influence value related to the direction W. In other words, by determining the degree of wind influence from the wind direction measurement value, and then calculating the wind influence value from the wind speed measurement value using this degree of wind influence, even if the wind speed measurement value is the same, the influence of the wind acting on the ventilation window 40 can be grasped in more detail and more easily due to the difference in the degree of wind influence determined from the wind direction measurement value.

In the ventilation window opening setting unit 55, when the judgment unit 53 judges that the environmental information measurement value is outside the range of the environmental information set value, the corrected opening of the ventilation window 40 is set so that the environmental information measurement value falls within the range of the environmental information set value, and this corrected opening is corrected by the wind influence value to set the corrected opening of the ventilation window 40. For example, if the environmental information set value is set to the temperature set value in the house 1 = 25 ° C. ± 0.5 ° C., and the temperature in the house 1 (environmental information measurement value) is 27 ° C., the corrected opening of the ventilation window 40 is set to lower the temperature in the house 1. Normally, this corrected opening is larger than the current opening of the ventilation window 40 obtained from the input unit 51, but if the wind speed from the direction most affected by the wind is large when the ventilation window 40 is open, opening the ventilation window 40 wide may cause a large amount of wind to flow into the house 1 at once, causing a sudden change in temperature and adversely affecting agricultural crops.

Therefore, when the environmental information measurement value is outside the range of the environmental information set value, the corrected opening degree of the ventilation window 40 is set so that the environmental information measurement value falls within the range of the environmental information set value. Furthermore, in this embodiment, the corrected opening degree of the ventilation window 40 is set by correcting this corrected opening degree with the wind influence value calculated by the calculation unit 54. If the ventilation window 40 is opened and closed only with the corrected opening degree so that the environmental information measurement value in the house 1 falls within the range of the environmental information set value, the environment in the house 1 will change more than expected due to the influence of the wind acting on the ventilation window 40, and there is a very high possibility that the agricultural crops will be adversely affected. However, by setting the corrected opening degree corrected with the wind influence value, it is possible to control the opening and closing of the ventilation window 40 taking into account the influence of the wind acting on the ventilation window 40, so that it is possible to prevent a sudden change in the environment in the house 1 due to the wind flowing into the house 1 from the ventilation window 40 and damage to the ventilation window 40 itself.

The corrected opening set by the ventilation window opening setting unit 55 is then sent to the output unit 56, and is then sent from the output unit 56 to the ventilation window 40 in the house 1. The ventilation window 40 is automatically controlled by the corrected opening, so that the cultivation environment in the house 1 is maintained at the cultivation environment input from the target environment information input unit 57.

As described above, according to the agricultural greenhouse ventilation window control system 10 of this embodiment, when the environmental information measurement value in the greenhouse 1 is outside the range of the environmental information set value, the corrected opening degree of the ventilation window 40 is set so that the environmental information measurement value falls within the range of the environmental information set value, and this corrected opening degree is further corrected according to the wind influence value to set the corrected opening degree and control the opening and closing of the ventilation window 40. This makes it possible to prevent sudden environmental changes in the greenhouse 1 and damage to the ventilation window 40 itself due to wind flowing into the greenhouse 1 from the ventilation window 40, and makes it possible to optimally and precisely control the cultivation environment in the greenhouse 1.

One embodiment of the present invention has been described in detail above, but in the ventilation window control system for an agricultural greenhouse of the present invention, the wind direction measurement value and wind speed measurement value obtained from the anemometer are obtained, along with the outdoor temperature measurement value from an outdoor temperature gauge installed outside the greenhouse, and the correction opening set in the ventilation window opening setting unit is further corrected with the outdoor temperature measurement value, making it possible to control the opening and closing of the ventilation window taking into account not only the influence of wind acting on the ventilation window 40, but also the outdoor temperature.

More specifically, the agricultural greenhouse ventilation window control system 11 of this embodiment shown in FIG. 4 has a basic configuration similar to that of the agricultural greenhouse ventilation window control system 10 shown in FIG. 1, and further includes an outside temperature meter 60 outside the greenhouse 1. The outside temperature measurement value obtained by the outside temperature meter 60 is input to the input unit 51 together with the wind direction measurement value and wind speed measurement value obtained by the anemometer 20.

The ventilation window control device 50a of the ventilation window control system 11 for the agricultural greenhouse of this embodiment also includes an outside temperature influence setting unit 52a, which sets the "outside temperature influence" of the ventilation window 40 in advance based on the relationship between the outside temperature and the opening degree of the ventilation window 40. Generally, when the outside temperature is high, the opening degree of the ventilation window 40 is large, and when the outside temperature is low, the opening degree is small. Therefore, by setting the outside temperature influence of the ventilation window 40 in advance based on the relationship between the outside temperature and the opening degree of the ventilation window 40, it becomes possible to control the opening and closing of the ventilation window 40 while taking the outside temperature into consideration.

In this embodiment, the calculation unit 54 calculates a "wind influence value" from the wind direction measurement value and wind speed measurement value measured by the anemometer 20 and the wind influence degree set in the wind influence degree setting unit 52, and at the same time calculates an "outdoor temperature influence value" from the outdoor temperature measurement value measured by the outdoor temperature gauge 60 and the outdoor temperature influence degree set in the outdoor temperature influence degree setting unit 52a.

When the corrected opening of the ventilation window 40 is set in the ventilation window opening setting unit 55a according to this embodiment, that is, when the environmental information measurement value is outside the range of the environmental information set value, the corrected opening of the ventilation window 40 is first set so that the environmental information measurement value falls within the range of the environmental information set value, and when the corrected opening of the ventilation window 40 is set by correcting this corrected opening using the wind influence value calculated in the calculation unit 54, this corrected opening is further corrected using the outside air temperature influence value obtained from the outside air temperature measurement value and the outside air temperature influence degree to set the re-corrected opening of the ventilation window 40. When the corrected opening is set in the ventilation window opening setting unit 55a, this corrected opening is further corrected using the outside air temperature influence value to set the re-corrected opening, making it possible to control the opening and closing of the ventilation window 40 taking into account not only the influence of the wind acting on the ventilation window 40 but also the outside air temperature, and the cultivation environment in the greenhouse 1 can be controlled with even higher precision.

The embodiment of the agricultural greenhouse ventilation window control system of the present invention has been described in detail above. Next, the environmental control method using the agricultural greenhouse ventilation window control system 10 (see FIG. 1) according to the embodiment of the present invention will be described in detail with reference to FIG. 5. Here, in the agricultural greenhouse ventilation window control system 10 of this embodiment, an anemometer 20 is installed outside the greenhouse 1, and a thermometer is installed inside the greenhouse 1 as an in-house sensor 30.

First, in step S11, the environmental information set value ES for house 1 is input from the target environmental information input unit 57. For example, in this embodiment, the temperature inside house 1 is set to 25°C, that is, the environmental information set value ES = 25°C.

Next, in step S12, the wind influence degree setting unit 52 sets the wind influence degree. In this embodiment, as shown in FIG. 3, for example, the direction most affected by the wind when the ventilation window 40 of the house 1 is open (direction E in FIG. 3) is used as a reference, and all directions on the horizontal plane of the house 1 are divided into four directions, and the wind influence degree is set for each direction E, N, W, and S. In order to set the opening degree of the ventilation window 40 taking into account the influence of the wind on the ventilation window 40 by proportional control, for example, the wind influence degree of the direction E that is most affected by the wind is set as direction E = 1.0 and this is used as a reference, and the wind influence degrees of the other directions N, W, and S are set, for example, as direction N = 0.5, direction S = 0.3, and direction W = 0.2, taking into account the topography, climate, season, etc. at the installation site of the house 1.

In step S13, the wind direction measurement value dm and wind speed measurement value sm measured by the anemometer 20, the environmental information measurement value tm (the temperature inside the house 1 in this embodiment) measured by the house sensor 30, and the current opening degree co of the ventilation window 40 are input to the input unit 51.

In step S14, the calculation unit 54 calculates the wind influence value wi from the wind direction measurement value dm and wind speed measurement value sm acquired from the input unit 51 and the wind influence set in the wind influence setting unit 52. More specifically, for example, in FIG. 3, when the wind direction measurement value dm = south-southeast measured by the anemometer 20 corresponds to the direction S, the wind influence value is 0.3. Then, when the wind influence value is determined to be direction S = 0.3 from the wind direction measurement value dm, the wind influence value wi is calculated from this wind influence value and the wind speed measurement value sm.

Meanwhile, in step S15, the judgment unit 53 compares the environmental information measurement value tm in the house 1 with a preset environmental information set value ES in the house 1 to judge whether the environmental information measurement value tm is within the range of the environmental information set value ES. For example, if the environmental information set value ES (the temperature inside the house 1 in this embodiment) is set to 25°C and the range of the environmental information set value ES is set to a range of ±0.5°C, then if the environmental information measurement value tm = 24.5°C to 25.5°C, the judgment unit 53 judges that the environmental information measurement value tm is within the range of the environmental information set value ES.

If it is determined in step S15 that the environmental information measurement value tm is within the range of the environmental information setting value ES, the corrected opening degree so of the ventilation window 40 is not set, and if it is determined in step S18 that the opening/closing control of the ventilation window 40 is not to be ended, the process returns to step S13.

On the other hand, if it is determined in step S15 that the environmental information measurement value tm is outside the range of the environmental information set value ES, then in the following step S16, the ventilation window opening setting unit 55 first sets the corrected opening so of the ventilation window 40 so that the environmental information measurement value tm falls within the range of the environmental information set value ES. The corrected opening so can be set using a conventional method for controlling the opening and closing of the ventilation window 40. When the environmental information measurement value tm and the environmental information set value ES are the temperature inside the house 1, generally, when the environmental information measurement value tm exceeds the range of the environmental information set value ES, the corrected opening so of the ventilation window 40 is set to be larger than the current opening co, and conversely, when the environmental information measurement value tm is below the range of the environmental information set value ES, the corrected opening so of the ventilation window 40 is set to be smaller than the current opening co.

Furthermore, in step S16 according to this embodiment, the corrected opening degree so of the ventilation window 40 is corrected by the wind influence value wi calculated in step S14 to set the corrected opening degree ho of the ventilation window 40. If the ventilation window 40 is controlled to open and close only by the corrected opening degree so so that the environmental information measurement value tm in the house 1 falls within the range of the environmental information set value ES, the environment in the house 1 will change more than expected due to the influence of the wind acting on the ventilation window 40, and there is a very high possibility that this will have a negative effect on the crops. Therefore, by correcting the corrected opening degree so of the ventilation window 40 once set by the wind influence value wi to set the corrected opening degree ho, it becomes possible to control the opening and closing of the ventilation window 40 taking into account the influence of the wind acting on the ventilation window 40, and it is possible to prevent a sudden change in the environment in the house 1 due to the wind flowing into the house 1 from the ventilation window 40 and damage to the ventilation window 40 itself.

The corrected opening degree ho of the ventilation window 40 set in step S16 is sent to the output unit 56, and in step S17, the corrected opening degree ho of the ventilation window 40 sent from the ventilation window opening degree setting unit 55 to the output unit 56 is output from this output unit 56 to the ventilation window 40 related to the house 1. Then, the ventilation window 40 is automatically controlled by the corrected opening degree ho, so that the cultivation environment in the house 1 is maintained within the range of the environmental information set value ES.

As described above, in the ventilation window control method for an agricultural greenhouse according to this embodiment, when it is determined that the environmental information measurement value tm is outside the range of the environmental information set value ES, the corrected opening degree so of the ventilation window 40 is set so that the environmental information measurement value tm falls within the range of the environmental information set value ES, and the corrected opening degree so is corrected by the wind influence value wi to set the corrected opening degree ho of the ventilation window 40, and the opening and closing of the ventilation window 40 is controlled by this corrected opening degree ho. When controlling the opening and closing of the ventilation window 40, the cultivation environment in the greenhouse 1 is easily affected by the wind flowing into the greenhouse 1 from the ventilation window 40, which may cause a sudden change in the environment in the greenhouse 1 or damage to the ventilation window 40 itself. However, according to the ventilation window control method for an agricultural greenhouse according to this embodiment, when controlling the opening and closing of the ventilation window 40, the corrected opening degree ho of the ventilation window 40 is set after taking into account the influence of the wind acting on the ventilation window 40, so that optimal and highly accurate environmental control in the greenhouse 1 can be realized.

The ventilation window control method using the agricultural greenhouse ventilation window control system 10 according to an embodiment of the present invention has been described in detail above. Next, we will explain the ventilation window control method using the agricultural greenhouse ventilation window control system 11 according to another embodiment of the present invention.

In the environmental control method using the agricultural greenhouse ventilation window control system 11 according to this embodiment shown in FIG. 6, the basic flow is the same as the environmental control method using the agricultural greenhouse ventilation window control system 10 according to the above embodiment, and first, in step S11, the environmental information setting value ES for the greenhouse 1 is input from the target environmental information input unit 57.

Next, in step S12a, the degree of wind influence is set, and the degree of outside air temperature influence is also set. Generally, when the outside air temperature is high, the opening degree of the ventilation window 40 is large, and when the outside air temperature is low, the opening degree is small. Therefore, the degree of outside air temperature influence is set arbitrarily in advance according to the measurement range of the outside air temperature, based on the relationship between the outside air temperature and the opening degree of the ventilation window 40.

Next, in step S13a, the wind direction measurement value dm and wind speed measurement value sm measured by the anemometer 20, the environmental information measurement value tm (in this embodiment, the temperature inside the house 1) measured by the house sensor 30, and the current opening degree co of the ventilation window 40 are acquired, and the outside air temperature measurement value ot measured by the outside air temperature meter 60 installed outside the house 1 is acquired and input to the input unit 51.

Then, in step S14a, a wind influence value wi is calculated from the wind direction measurement value dm, the wind speed measurement value sm, and the wind influence degree, and an outside temperature influence value oi is calculated from the outside temperature measurement value ot and the outside temperature influence degree.

In step S15, it is determined whether the environmental information measurement value tm is within the range of the environmental information set value ES. If it is determined that the environmental information measurement value tm is outside the range of the environmental information set value ES, then in the following step S16a, the corrected opening degree so of the ventilation window 40 is first set so that the environmental information measurement value tm falls within the range of the environmental information set value ES. Next, this corrected opening degree so of the ventilation window 40 is corrected by the wind influence value wi calculated in step S14a, and the corrected opening degree ho of the ventilation window 40 is set.

Furthermore, in step S16a according to this embodiment, the corrected opening degree ho of the ventilation window 40 is further corrected by the outside air temperature influence value oi calculated from the measured outside air temperature ot and the outside air temperature influence degree, thereby setting the recorrected opening degree ro of the ventilation window 40, and sending it to the output unit 56. In this way, when the corrected opening degree ho of the ventilation window 40 is set in the ventilation window opening degree setting unit 55a, the corrected opening degree ho of the ventilation window 40 is further corrected by the outside air temperature influence value oi to set the recorrected opening degree ro, thereby making it possible to control the opening and closing of the ventilation window 40 taking into account not only the influence of the wind acting on the ventilation window 40, but also the outside air temperature.

Finally, in step S17a, the re-corrected opening degree ro of the ventilation window 40 sent from the ventilation window opening degree setting unit 55 to the output unit 56 is output from this output unit 56 to the ventilation window 40 related to the house 1, and the ventilation window 40 is automatically controlled based on the re-corrected opening degree ro. By automatically controlling the ventilation window 40 with the re-corrected opening degree ro, the cultivation environment in the house 1 is maintained within the range of the environmental information set value ES.

As described above, in this embodiment, in controlling the opening and closing of the ventilation window 40, the re-corrected opening degree ro is set taking into account not only the influence of wind acting on the ventilation window 40 but also the influence of the outside air temperature outside the greenhouse 1, so that the cultivation environment inside the greenhouse 1 can be controlled with even greater precision.

The ventilation window control system for an agricultural greenhouse and the ventilation window control method using the same according to the embodiment of the present invention exemplified above should not be construed as substantially limiting the technical idea of the present invention. The present invention can be implemented with appropriate improvements, modifications, or additions based on the ingenuity and ingenuity of those skilled in the art, without departing from the gist of the invention.

10, 11: Ventilation window control system 20: Wind direction and speed meter 30: House interior sensor 40: Ventilation window 50, 50a: Ventilation window control device 51: Input section 52: Wind influence setting section 52a: Outside temperature influence setting section 53: Determination section 54: Calculation section 55, 55a: Ventilation window opening setting section 56: Output section 57: Target environmental information input section 60: Outside temperature meter ES: Environmental information set value co: Current ventilation window opening dm: Wind direction measurement value ho: Corrected ventilation window opening oi: Outside temperature influence value ot: Outside temperature measurement value ro: Re-corrected ventilation window opening sm: Wind speed measurement value so: Corrected ventilation window opening tm: Environmental information measurement value wi: Wind influence value

Claims (4)

A ventilation window control system that automatically controls the opening degree of a ventilation window based on environmental information inside and outside an agricultural greenhouse,
At least an anemometer installed outside the greenhouse,
A house sensor for measuring environmental information within the house;
A ventilation window control device for controlling the opening degree of the ventilation window;
The present invention relates to a method for manufacturing a computer-implemented ...
The ventilation window control device has an input unit to which the wind direction measurement value and the wind speed measurement value measured by the anemometer, the indoor environmental information measurement value measured by the indoor sensor, and the current opening degree of the ventilation window are inputted,
a wind influence setting unit which divides all directions on the horizontal plane of the house into a plurality of directions based on a direction that is most affected by wind when the ventilation window is open, sets a reference value of the wind influence, which is an index for reflecting the influence of wind acting on the ventilation window when setting the opening degree of the ventilation window, in the reference direction among the directions, and then presets the wind influence in each of the other directions ;
a calculation unit that determines the degree of influence of the wind that is preset for each of the directions from the wind direction measurement values, and calculates a wind influence value for correcting the opening degree of the ventilation window from the determined degree of influence of the wind and the wind speed measurement values;
a determination unit that compares the measured environmental information with a preset environmental information setting value for the house and determines whether the measured environmental information is within a range of the preset environmental information setting value;
a ventilation window opening setting unit that, when the environmental information measurement value is outside the range of the environmental information setting value, sets a corrected opening degree of the ventilation window so that the measured environmental information value falls within the range of the environmental information setting value, and corrects the corrected opening degree by the wind influence value to set a corrected opening degree of the ventilation window;
an output unit that outputs the corrected opening degree to the ventilation window;
A ventilation window control system for an agricultural greenhouse comprising: An outside temperature gauge installed outside the house;
an outside air temperature influence setting unit that presets an outside air temperature influence , which is an index for reflecting the influence of the outside air temperature when setting the opening degree of the ventilation window, for each measurement range of a predetermined outside air temperature based on a relationship between the outside air temperature and the opening degree of the ventilation window ;
The method further comprises:
The input unit further inputs an outside air temperature measurement value measured by the outside air temperature gauge,
The calculation unit further calculates an outside air temperature influence value for correcting an opening degree of the ventilation window from the outside air temperature measurement value and the outside air temperature influence degree,
2. The ventilation window control system for an agricultural greenhouse according to claim 1, wherein the ventilation window opening degree setting unit further corrects the corrected opening degree based on the outside air temperature influence value to set a re-corrected opening degree. A ventilation window control method for automatically and optimally controlling the opening degree of a ventilation window based on environmental information inside and outside an agricultural greenhouse, comprising:
An environmental information setting value input step for inputting an environmental information setting value in the house;
an influence setting step of dividing all directions on the horizontal plane of the house into a plurality of directions based on the direction most affected by the wind when the ventilation window is open, setting a reference value of the influence of the wind, which is an index for reflecting the influence of the wind acting on the ventilation window when setting the opening degree of the ventilation window, in the reference direction among the directions, and then presetting the influence of the wind in each of the other directions ;
an information acquisition step of acquiring wind direction measurement values and wind speed measurement values measured by an anemometer installed outside the house, environmental information measurement values measured by a sensor inside the house, and a current opening degree of the ventilation window;
a calculation step of determining the degree of influence of the wind preset for each of the directions from the wind direction measurement values, and calculating a wind influence value for correcting the opening degree of the ventilation window from the determined degree of influence of the wind and the wind speed measurement values;
a determination step of comparing the environmental information measurement value with the environmental information setting value to determine whether the environmental information measurement value is within a range of the environmental information setting value;
a ventilation window opening setting step of setting a corrected opening degree of the ventilation window when the environmental information measurement value is outside the range of the environmental information setting value so that the environmental information measurement value falls within the range of the environmental information setting value, and correcting the corrected opening degree by the wind influence value to set a corrected opening degree of the ventilation window;
and an output step of sending the corrected opening degree to the ventilation window. In the influence degree setting step, an outside air temperature influence degree is set, which is an index for reflecting the influence of the outside air temperature when setting the opening degree of the ventilation window, for each measurement range of a predetermined outside air temperature based on the relationship between the outside air temperature outside the house and the opening degree of the ventilation window;
In the information acquisition step, an outside air temperature measured by an outside air temperature gauge installed outside the house is further acquired,
In the calculation step, an outside air temperature influence value for correcting an opening degree of the ventilation window is calculated from the outside air temperature measurement value and the outside air temperature influence degree,
4. The ventilation window control method according to claim 3, wherein in the ventilation window opening degree setting step, the corrected opening degree of the ventilation window is further corrected by the outside air temperature influence value to set a re-corrected opening degree.