KR102101023B1 - Building automatically control system and method for reducing the fine dust - Google Patents

Abstract

The present invention relates to an automatic building control system of reducing fine dust to improve an inner air quality, and a method thereof. According to one embodiment of the present invention, the automatic building control system of reducing fine dust to improve the inner air quality comprises: a reception unit which receives carbon dioxide concentration information from a carbon dioxide sensing apparatus installed in an inner space in the building, outer fine dust concentration information from an outer fine dust sensing apparatus installed outside the building, and an inner fine dust concentration information from an inner fine dust sensing apparatus installed in the inner space; and a control unit which realizes driving of the ventilation apparatus installed in the building based on the carbon dioxide concentration information, the outer fine dust concentration information, and the inner fine dust concentration information, thereby realizing the ventilation of the building, wherein the ventilation apparatus has an outer ventilation mode, which ventilates by introducing external air into the inner space, and an inner circulation mode, which circulates the air in the inner space. The control unit realizes ventilation in a first control mode when the inner fine dust concentration is greater than the outer fine dust concentration, and realizes ventilation in a second control mode when the inner fine dust concentration is smaller than the outer fine dust concentration. The first control mode may be a mode which controls the ventilation apparatus in the outer ventilation mode when the carbon dioxide concentration in the inner space is equal to or greater than a preset carbon dioxide threshold value or the inner fine dust concentration in the inner space is equal to or greater than a preset fine dust threshold value; and the second control mode may be a mode which controls the ventilation apparatus in the inner circulation mode when the carbon dioxide concentration in the inner space is equal to or greater than a preset carbon dioxide threshold value.

Description

BUILDING AUTOMATICALLY CONTROL SYSTEM AND METHOD FOR REDUCING THE FINE DUST}

The present invention relates to a building automatic control system and a method for improving the internal air quality through the reduction of fine dust, and more specifically, to reduce the fine dust in a building by utilizing the concentration of fine dust inside and outside the building. The present invention relates to a building automatic control system and a method for improving internal air quality through reduction of fine dust.

Recently, there is an increasing demand for ventilation systems to minimize damage to fine dust and ultra fine dust, which have become an issue.

Fine dust is a very small material that is invisible to our eyes. It refers to a particulate matter with a diameter of less than 10㎛ that floats or scatters for a long time in the atmosphere.

It is an air pollutant that causes various lung diseases when it burns fossil fuels such as coal or oil, or when it comes out of exhaust gas from manufacturing industry, automobile fumes, etc., and adsorbs to the lungs through the bronchus.

In particular, the ultra-fine dust that recently flew from China is the biggest issue.

Currently, the dust that covers Korea is ultra-fine dust with an average diameter of 2.5 µm or less, classified as 'PM2.5'.

It is almost one-third the thickness of the hair. Because it is very fine dust, it easily passes through the nose hair and bronchial cilia, and because of the very small particles, it is difficult to discharge and accumulates easily in the body. In addition, there is a study that the concentration of fine dust per unit area is very high, so even if it enters the room even for a short time, the amount will exceed the standard concentration of indoor fine dust.

And, if it is a toxic ultrafine dust, it causes various respiratory diseases such as asthma, bronchitis, and lung cancer. When the ultrafine dust increases by 2.5㎛ per m3, the blood vessel becomes thicker by 14㎛, which increases the probability of developing a disease like a stroke. In addition, recently, patients who visited hospitals complaining of respiratory diseases also increased rapidly.

On the other hand, if air is not ventilated due to concern for such fine dust, indoor air becomes cloudy and work efficiency may decrease due to an increase in carbon dioxide and insufficient oxygen.

In order to solve this, Korean Patent Registration No. 10-1724263 (Registration on Apr. 3, 2017) discloses an automatic ventilation system, but in terms of controlling ventilation based on currently sensed external dust and internal dust, fine dust inside the building There is a limit to reduction.

The present invention is to solve the above problems, and to provide an automatic building control system and method for reducing fine dust through predictive control capable of reducing the concentration of fine dust inside a building even when the outside fine dust concentration is high.

The problem to be solved by the present invention is not limited to the above-described problems, and the problems not mentioned will be clearly understood by those having ordinary knowledge in the technical field to which the present invention pertains from this specification and the accompanying drawings. .

The building automatic control system for improving the internal air quality through reduction of fine dust according to an embodiment of the present invention includes carbon dioxide concentration information from a carbon dioxide sensing device installed in an interior space in a building, and external fine dust from an external fine dust sensing device installed outside a building. A receiving unit for receiving concentration information and internal fine dust concentration information from an internal fine dust sensing device installed in the interior space; And a control unit implementing ventilation of a building installed in a building based on the carbon dioxide concentration information, the external fine dust concentration information, and the internal fine dust concentration information to implement ventilation of the building. Equipped with an external ventilation mode for introducing and ventilating external air into the internal space and an internal circulation mode for circulating air in the internal space-the control unit is in a first control mode when the internal fine dust concentration is greater than the external fine dust concentration. When ventilation is implemented, and the internal fine dust concentration is less than the external fine dust concentration, ventilation is implemented in a second control mode, and the first control mode is when the carbon dioxide concentration in the internal space is greater than or equal to a preset carbon dioxide threshold or the internal When the internal fine dust concentration in the space is above the preset fine dust threshold, the ventilation The device is a mode for controlling the external ventilation mode, and the second control mode may be a mode for controlling the ventilation device to the internal circulation mode when the concentration of carbon dioxide in the internal space is greater than or equal to a preset carbon dioxide threshold.

Reduction of fine dust through predictive control according to an embodiment of the present invention According to an automatic building control system and method, it is possible to effectively reduce the concentration of fine dust inside a building even if the outside fine dust concentration is high.

The effects of the present invention are not limited to the above-described effects, and effects not mentioned will be clearly understood by those skilled in the art from the present specification and the accompanying drawings.

1 is a schematic configuration diagram of an automatic building control system for reducing fine dust through predictive control according to an embodiment of the present invention.
2 is a schematic graph for explaining fine dust prediction information.
3 is a schematic graph for explaining a change in carbon dioxide concentration.
4 is a graph for explaining changes in external fine dust concentration and internal fine dust concentration.
5 is a graph for explaining a change in humidity.
6 is a schematic view for explaining a ventilation device.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and a person skilled in the art who understands the spirit of the present invention may add another component within the scope of the same spirit, change, delete, etc. Other embodiments that are included within the scope of the invention idea can be easily proposed, but this will also be included within the scope of the invention.

Reduction of fine dust through predictive control according to an embodiment of the present invention The building automatic control system receives a fine dust prediction information from an external electronic device and a receiving unit for receiving carbon dioxide concentration information from a carbon dioxide sensing device installed in the interior space in the building. ; And a control unit implementing opening / closing of a window or driving of a ventilation device installed in a building based on the carbon dioxide concentration information and the fine dust prediction information to implement ventilation of the building. The control unit includes the fine dust prediction information. When the threshold value of the fine dust is greater than or equal to the preset first time point in the future, based on a second time point that is before the first time point, a predetermined time or a carbon dioxide concentration in the internal space is preset in a previous time period of the second time point. When the carbon dioxide threshold is greater than or equal to a threshold, a first ventilation mode for implementing ventilation and a period after the second time point may implement a second ventilation mode for implementing ventilation even when the concentration of carbon dioxide in the interior space is less than the carbon dioxide threshold.

Also, the second time point may be changed by the control unit based on the fine dust prediction information.

Also, the second time point may be changed by the control unit based on the concentration of the fine dust and the duration of the fine dust threshold or more.

In addition, in the second ventilation mode, the control unit may set a carbon dioxide adjustment threshold lower than the carbon dioxide threshold, and implement ventilation when the carbon dioxide concentration in the internal space is greater than or equal to the carbon dioxide adjustment threshold.

In addition, the carbon dioxide adjustment threshold may be changed by the control unit based on the fine dust prediction information.

In addition, the carbon dioxide adjustment threshold may be varied by the control unit based on the concentration of the fine dust and the duration of the fine dust threshold or more.

Further, the receiving unit receives external fine dust concentration information from an external fine dust sensing device installed outside the building and internal fine dust concentration information from an internal fine dust sensing device installed in the interior space, and the carbon dioxide adjustment threshold predicts the fine dust Based on the information and the difference between the concentration of the external fine dust and the concentration of the internal fine dust, it may be varied by the control unit.

Reduction of fine dust through predictive control according to another embodiment of the present invention The building automatic control method comprises: receiving fine dust prediction information and carbon dioxide concentration information through the receiving unit; And implementing ventilation of the building based on the carbon dioxide concentration information and the fine dust prediction information through the control unit.

The building automatic control system for improving the internal air quality through the reduction of fine dust according to another embodiment of the present invention includes carbon dioxide concentration information from the carbon dioxide sensing device installed in the interior space of the building, and external from the external fine dust sensing device installed outside the building. A receiving unit for receiving fine dust concentration information and internal fine dust concentration information from an internal fine dust sensing device installed in the interior space; And a control unit implementing ventilation of a building installed in a building based on the carbon dioxide concentration information, the external fine dust concentration information, and the internal fine dust concentration information to implement ventilation of the building. Equipped with an external ventilation mode for introducing and ventilating external air into the internal space and an internal circulation mode for circulating air in the internal space-the control unit is in a first control mode when the internal fine dust concentration is greater than the external fine dust concentration. When ventilation is implemented, and the internal fine dust concentration is less than the external fine dust concentration, ventilation is implemented in a second control mode, and the first control mode is when the carbon dioxide concentration in the internal space is greater than or equal to a preset carbon dioxide threshold or the internal When the internal fine dust concentration in the space is above the preset fine dust threshold, the ventilation The device is a mode for controlling the external ventilation mode, and the second control mode may be a mode for controlling the ventilation device to the internal circulation mode when the concentration of carbon dioxide in the internal space is greater than or equal to a preset carbon dioxide threshold.

In addition, in the first control mode, the carbon dioxide threshold is a first threshold, and in the second control mode, the carbon dioxide threshold may be a second threshold different from the first threshold.

In addition, the second threshold may be varied by the control unit based on the external fine dust concentration.

Also, the second threshold may be varied by the control unit based on the difference between the external fine dust concentration and the internal fine dust concentration.

In addition, the second control mode may be a mode in which the ventilation device is controlled to the external ventilation mode when the concentration of carbon dioxide in the internal space is greater than or equal to the carbon dioxide threshold.

In addition, in the second control mode, when the ventilation device is controlled to the external ventilation mode, the controller may control the humidifier installed in the building to implement humidification.

According to another embodiment of the present invention, an automatic building control method for improving internal air quality through reduction of fine dust includes receiving carbon dioxide concentration information, external fine dust concentration information, and internal fine dust concentration information through the receiving unit; And implementing ventilation of the building based on the carbon dioxide concentration information, the external fine dust concentration information, and the internal fine dust concentration information through the control unit.

Components having the same function within the scope of the same idea appearing in the drawings of each embodiment will be described using the same reference numerals.

1 is a schematic configuration diagram of an automatic building control system for reducing fine dust through predictive control according to an embodiment of the present invention.

2 is a schematic graph for explaining fine dust prediction information, and FIG. 3 is a schematic graph for explaining a change in carbon dioxide concentration.

4 is a graph for explaining the change in the concentration of external fine dust and the concentration of internal fine dust, and FIG. 5 is a graph for explaining the change in humidity.

6 is a schematic view for explaining a ventilation device.

In order to more clearly express the technical spirit of the present invention, the accompanying drawings are simplified or omitted from parts that are less relevant to the technical spirit of the present invention or that can be easily derived from those skilled in the art.

1 to 6, the fine dust reduction building automatic control system 10 through predictive control according to an embodiment of the present invention is a system that implements ventilation of a building, and receives predetermined information / data To be implemented by the control unit 200 for controlling the opening and closing of the windows of the building and / or the driving of the ventilation device 20 installed in the building based on the predetermined information / data to implement ventilation of the building 100 and the building Can be.

For example, the receiving unit 100 and / or the control unit 200 may be installed in a building, or installed outside the building to implement ventilation of the building by remote control.

As an example, the receiving unit 100 of the fine dust reduction through the predictive control building automatic control system 10 receives fine dust prediction information from an external electronic device, and the carbon dioxide sensing device installed in the interior space S in the building Carbon dioxide concentration information from can be received in real time.

For example, the electronic device may receive the predetermined information including the concentration of fine dust, the predicted concentration of fine dust, and the like for the area where the building is located with respect to the past and / or future from the present time.

For example, the electronic device may be a meteorological agency server, but is not limited thereto.

2 shows an example of the fine dust prediction information, and the fine dust prediction information may mean information on a change in the concentration of fine dust in an area where a building is located from a current time point to a predetermined time point in the future.

For example, the carbon dioxide sensing device may be a measuring instrument capable of measuring the concentration of carbon dioxide in real time, and the carbon dioxide concentration information may be information about a change in the concentration of carbon dioxide in the interior space S in the building.

The internal space S may be a predetermined space partitioned in a building.

The receiver 100 may receive the fine dust prediction information and the carbon dioxide concentration information by wire / wirelessly from the electronic device and the sensing device.

Here, as an example, the control unit 200 implements driving of the ventilation device 20 installed in a building or opening or closing a window based on the carbon dioxide concentration information and the fine dust prediction information received by the receiving unit 100. By doing so, ventilation of the building can be realized.

For example, an opening / closing device for opening and closing a window under the control of the control unit 200 may be installed in the window.

For example, the ventilation device 20 may be an air conditioner installed in a building, but is not limited thereto, and an electronic device implementing ventilation of the building may correspond to the ventilation device 20.

Here, as an example, when the fine dust prediction information is equal to or greater than a preset fine dust threshold value C1 at a future first time point T1, the control unit 200 is a second time point before the first time point T1. A first ventilation mode that implements ventilation when the carbon dioxide concentration in the internal space S is equal to or greater than a preset carbon dioxide threshold C2 in a previous period of the second time point T2 based on the time point T2. And in a period after the second time point T2, a second ventilation mode that implements ventilation may be implemented even when the carbon dioxide concentration in the internal space S is less than the carbon dioxide threshold C2.

To explain this in more detail, as shown in FIG. 2, the concentration of fine dust predicted at the first time point T1 at which the fine dust prediction information received by the receiver 100 is present and future is the fine dust threshold. (C1) or more information.

At this time, the control unit 200 is based on the second time point T2 in the future, which is a time point before the first time point T1, and the first ventilation mode during the period from the present time to the second time point T2. The ventilation may be implemented, and ventilation may be implemented in the second ventilation mode from the second time point T2 to the first time point T1.

In one example, the first ventilation mode is a mode implemented from the present to the second time point T2, when the preset time and / or the carbon dioxide concentration in the internal space S is greater than or equal to the preset carbon dioxide threshold value C2. It may be a mode in which ventilation is implemented by the control unit 200.

For example, the preset time may be a time table previously input by the administrator, and the control unit 200 may implement ventilation when the inputted preset time is reached.

In one example, when the preset time set by the administrator is 4 hours, the control unit 200 may implement ventilation every 4 hours.

In addition, as shown in Figure 3 (a), the control unit 200, if the carbon dioxide concentration of the internal space (S) in the first ventilation mode is greater than the carbon dioxide threshold (C2), the internal space (S) Ventilation can be implemented to lower the carbon dioxide concentration of.

As can be seen in Figure 3 (a), when the carbon dioxide concentration in the interior space (S) reaches the carbon dioxide threshold (C2), the control unit 200 opens the window and / or the ventilation device 20 By driving, the carbon dioxide concentration in the interior space S may be lowered, and when the carbon dioxide concentration in the interior space S reaches a predetermined lower carbon dioxide limit C3, the window is closed and / or the ventilation device 20 Can stop driving.

For example, the controller 200 may not implement ventilation when the preset time is not reached in the first ventilation mode or when the carbon dioxide concentration in the internal space S is less than the carbon dioxide threshold C2. .

On the other hand, the second ventilation mode is a mode implemented from the second time point T2 to the first time point T1, even when the carbon dioxide concentration in the internal space S is less than the carbon dioxide threshold value C2. It may be a mode in which ventilation is implemented by 200.

To explain this in more detail, as shown in FIG. 3 (b), in the second ventilation mode, the control unit 200 ventilates even when the carbon dioxide concentration in the internal space S is less than the carbon dioxide threshold C2. Can be implemented.

When the first time point T1 is reached, as the concentration of fine dust outside the building is predicted to be equal to or greater than the fine dust threshold value C1, ventilation at the time point after the first time point T1 is minimized to prevent external dust. This is to improve the air quality of the interior space S by minimizing the inflow of fine dust.

That is, before reaching the first time point T1, the concentration of carbon dioxide in the interior space S may be further reduced to minimize the inflow of fine dust from outside due to ventilation.

Here, as an example, the second time point T2 may be changed by the control unit 200 based on the fine dust prediction information.

That is, the second time point T2 is not a fixed time point, but may be changed by the control unit 200 according to the fine dust prediction information received from the receiving unit 100.

For example, the second time point T2 may be changed by the control unit 200 based on the fine dust concentration of the fine dust prediction information and / or a duration longer than the fine dust threshold C1.

To explain this in more detail, when the fine dust concentration predicted from the fine dust prediction information is relatively much larger than the fine dust threshold C1 (when the fine dust concentration is predicted to be very bad), the second time point T2 May be a time point having a relatively long time interval than the first time point T1, and when the fine dust concentration predicted from the fine dust prediction information is relatively smaller than the fine dust threshold C1 (fine dust concentration) Is expected to be slightly worse) The second time point T2 may be a time point having a relatively small time interval than the first time point T1.

That is, the control unit 200 is based on the fine dust prediction information to implement the second ventilation mode using the size of the fine dust concentration predicted from the first time point (T1) thereafter as an input value Two time points T2 can be set.

In addition, when the fine dust concentration predicted from the fine dust prediction information is greater than the fine dust threshold C1, but the duration thereof is relatively large, the second time point T2 is relatively greater than the first time point T1. It may be a time point having a long time interval, and when the fine dust concentration predicted from the fine dust prediction information is greater than the fine dust threshold (C1) as in the case of the previous case, but the duration is relatively small, the second time point ( T2) may be a time point having a relatively small time interval than the first time point T1.

That is, the control unit 200 is the second time point (T2) for implementing the second ventilation mode using the duration of the fine dust concentration above the fine dust threshold (C1) as an input value based on the fine dust prediction information. ) Can be set.

Of course, the control unit 200 may set the second time point T2 by combining the fine dust concentration of the fine dust prediction information and the duration of the fine dust threshold C1 or more.

As a result, it is possible to reduce the inflow of fine dust from the outside of the interior space (S) while preventing energy loss due to excessive ventilation.

Here, as an example, the controller 200 sets a carbon dioxide adjustment threshold C4 lower than the carbon dioxide threshold C2 in the second ventilation mode, and the carbon dioxide concentration in the internal space S is the carbon dioxide adjustment threshold ( C4) Above, ventilation can be implemented.

To explain this in more detail, as shown in FIG. 3 (b), in the second ventilation mode, the control unit 200 has a lower carbon dioxide concentration in the internal space S than the carbon dioxide threshold C2. When the carbon dioxide adjustment threshold C4 is reached, ventilation can be implemented to further reduce the carbon dioxide concentration in the interior space S.

At this time, in the second ventilation mode, the control unit 200 may stop the ventilation implementation when the carbon dioxide concentration in the internal space S reaches the lower limit of the carbon dioxide adjustment (C5).

For example, the lower limit of carbon dioxide adjustment (C5) may be lower than the lower limit of carbon dioxide (C3).

That is, the control unit 200 implements ventilation when the carbon dioxide concentration in the internal space S reaches the carbon dioxide adjustment threshold C4 in the second ventilation mode, and reaches the carbon dioxide adjustment lower limit C5. If not, ventilation may not be implemented.

Here, as an example, the carbon dioxide adjustment threshold value C4 and / or the carbon dioxide adjustment lower limit value C5 may be varied by the control unit 200 based on the fine dust prediction information.

That is, the carbon dioxide adjustment threshold value C4 and / or the carbon dioxide adjustment lower limit value C5 is not a fixed value, but may be changed by the control unit 200 according to the fine dust prediction information received from the reception unit 100. You can.

In one example, the carbon dioxide adjustment threshold (C4) and / or the carbon dioxide adjustment lower limit (C5) is based on the fine dust concentration and / or duration of the fine dust threshold (C1) of the fine dust prediction information based on the control unit ( 200).

To explain this in more detail, when the fine dust concentration predicted from the fine dust prediction information is relatively larger than the fine dust threshold (C1) (if the fine dust concentration is predicted to be very bad), the carbon dioxide adjustment threshold (C4) And / or the lower limit of carbon dioxide adjustment (C5) may be a relatively low value, and when the fine dust concentration predicted from the fine dust prediction information is relatively smaller than the fine dust threshold (C1) (fine dust concentration is slightly bad) The carbon dioxide adjustment threshold (C4) and / or the carbon dioxide adjustment lower limit (C5) may be relatively high.

In addition, when the fine dust concentration predicted from the fine dust prediction information is greater than the fine dust threshold (C1), but the duration thereof is relatively large, the carbon dioxide adjustment threshold (C4) and / or the carbon dioxide adjustment lower limit (C5) is It may be a relatively low value, and the fine dust concentration predicted from the fine dust prediction information is greater than the fine dust threshold (C1) as in the previous case, but when the duration is relatively small, the carbon dioxide adjustment threshold (C4) and / Or the lower limit of carbon dioxide adjustment (C5) may be a relatively high value.

As a result, it is possible to reduce the inflow of fine dust in the interior space S and at the same time, it is possible to prevent energy loss due to excessive ventilation.

Here, as an example, the receiver 100 may receive external fine dust concentration information from an external fine dust sensing device installed outside the building and internal fine dust concentration information from an internal fine dust sensing device installed in the interior space S. have.

As an example, the external fine dust sensing device may be installed on the outside of the building, an external ventilation opening, etc., and may be a measuring instrument for measuring the external fine dust concentration on the exterior of the building in real time, and the internal fine dust sensing device is the interior of the building. It may be installed in a space S, an internal ventilation part of a building, or the like, and may be a measuring instrument for measuring the concentration of the fine dust inside the space S.

For example, as illustrated in FIG. 4, the receiver 100 may receive the external fine dust concentration information and the internal fine dust concentration information continuously measured from the present time.

At this time, the control unit 200 changes the carbon dioxide adjustment threshold C4 and / or the carbon dioxide adjustment lower limit C5 based on the difference between the fine dust prediction information and the external fine dust concentration and the internal fine dust concentration. It might be.

In more detail, when the concentration of the internal fine dust is higher than the concentration of the external fine dust, the carbon dioxide adjustment threshold value C4 and / or the carbon dioxide adjustment lower limit value C5 may be relatively low, and the external fine dust concentration may be relatively low. When the concentration of the internal fine dust is lower than the concentration, the carbon dioxide adjustment threshold value C4 and / or the carbon dioxide adjustment lower limit value C5 may be a relatively high value.

As a result, it is possible to reduce the inflow of fine dust in the interior space S and at the same time, it is possible to prevent energy loss due to excessive ventilation.

A method for automatically controlling a building for reducing fine dust through prediction control according to another embodiment of the present invention comprises receiving the fine dust prediction information and the carbon dioxide concentration information through the receiving unit 100 and through the control unit 200 And implementing ventilation of the building based on the carbon dioxide concentration information and the fine dust prediction information.

That is, the method for automatically controlling a building for reducing fine dust through prediction control may mean a method for automatically controlling a building through the building automatic control system 10 for reducing fine dust through prediction control described above.

Hereinafter, the building automatic control system 10 for improving the internal air quality through the reduction of fine dust, which is another embodiment of the present invention, will be described in detail.

The above-described embodiments and contents overlap, or portions that can be easily derived from the viewpoint of those skilled in the art will be briefly described or omitted.

The building automatic control system 10 for improving the internal air quality through the reduction of the fine dust may include the receiving unit 100 and the control unit 200.

Here, as an example, the receiving unit 100 is the carbon dioxide concentration information for the internal space (S) from the carbon dioxide sensing device, the external fine dust concentration information and the internal space from the external fine dust sensing device installed outside the building ( The internal fine dust concentration information may be received from the internal fine dust sensing device installed in S).

Here, as an example, the controller 200 controls whether or not the ventilation device 20 installed in the building is driven based on the carbon dioxide concentration information, the external fine dust concentration information, and the internal fine dust concentration information to control the building Ventilation can be implemented.

In one example, the ventilation device 20 may be an air conditioner, as shown in Figure 6, the inlet pipe 21 for introducing air from the outside into the interior space (S) and the outside from the interior space (S) It may include an outlet pipe 22 for discharging the furnace air.

Hereinafter, a detailed description will be omitted in that a motor that implements inflow and exhaust of air, a valve that sets a path for moving air, etc. are obvious to those skilled in the art.

For example, the ventilation device 20 may include an external ventilation mode in which external air is introduced into the internal space S for ventilation, and an internal circulation mode for circulating air in the internal space S.

That is, in the external ventilation mode, external air is introduced into the internal space S through the inflow pipe 21 by the ventilation device 20, and air in the internal space S is supplied to the outflow pipe ( 22).

In addition, in the internal circulation mode, the air in the internal space S by the ventilation device 20 by the valve is different from the internal space S through the inlet pipe 21 and / or the outlet pipe 22. ).

Since the external ventilation mode and the internal ventilation mode are obvious to those skilled in the art, further detailed descriptions are omitted.

Here, when the internal fine dust concentration is greater than the external fine dust concentration (0-T4), the control unit 200 implements ventilation in the first control mode, and the internal fine dust concentration is less than the external fine dust concentration (T4- T5) Ventilation can be implemented in the second control mode.

At this time, the first control mode is the ventilation device when the concentration of carbon dioxide in the interior space S is greater than or equal to a preset carbon dioxide threshold and / or when the concentration of internal fine dust in the interior space S is above a preset threshold It may be a mode for controlling the 20 to the external ventilation mode.

To explain this in more detail, the first control mode is a mode implemented when the concentration of the internal fine dust received by the receiver 100 is greater than the concentration of the external fine dust (0-T4). When the concentration of carbon dioxide is greater than or equal to the carbon dioxide threshold, the ventilation device 20 may be driven in the external ventilation mode by the control unit 200, and the concentration of internal fine dust in the internal space S may be greater than or equal to the fine dust threshold. In this case, the ventilation device 20 may be driven by the control unit 200 in the external ventilation mode.

As a result, by introducing outside air into the interior space S, the carbon dioxide concentration and / or the internal fine dust concentration in the interior space S may be lowered.

In addition, the second control mode is a mode implemented when the internal fine dust concentration is less than the external fine dust concentration (T4-T5), and when the carbon dioxide concentration in the internal space S is greater than or equal to a preset carbon dioxide threshold, the ventilation device It may be a mode that controls the 20 to the internal circulation mode.

As a result, it is possible to minimize the inflow of fine dust from the outside to the interior space (S) by minimizing the inflow of outside air.

Here, as an example, the carbon dioxide threshold in the first control mode may be a first threshold, and the carbon dioxide threshold in the second control mode may be a second threshold different from the first threshold.

For example, the first threshold and the second threshold may be varied by the controller 200.

For example, when the concentration of the internal fine dust is greater than the concentration of the external fine dust (0-T4) and in the first control mode, when the first threshold is assumed to be '10', the controller 200 controls the internal space When the carbon dioxide concentration of (S) increases and reaches '10', the ventilation device 20 may be driven in the external ventilation mode to introduce external air to lower the carbon dioxide concentration in the interior space S. .

Meanwhile, the second threshold may be higher than the first threshold.

If the concentration of the internal fine dust is smaller than the concentration of the external fine dust (T4-T5), in the second control mode, the second threshold may be '20' higher than the first threshold, and the controller 200 Does not implement driving of the ventilation device 20, even if the carbon dioxide concentration in the interior space S increases and reaches '10', and the carbon dioxide concentration in the interior space S increases to reach '20'. In this case, the concentration of carbon dioxide may be reduced by circulating the internal air by driving the ventilation device 20 in the internal ventilation mode.

Here, as an example, the second threshold may be varied by the control unit 200 based on the external fine dust concentration.

If, when the external fine dust concentration is relatively very high (in the case of very fine dust), the control unit 200 may set the second threshold to a relatively high value, and when the external fine dust concentration is relatively high ( When the fine dust is slightly poor) The controller 200 may set the second threshold to a relatively low value.

Furthermore, as an example, the second threshold may be varied by the control unit 200 based on the difference between the external fine dust concentration and the internal fine dust concentration.

If the difference between the external fine dust concentration and the internal fine dust concentration is relatively small (when the external fine dust concentration is relatively slightly higher than the internal fine dust concentration), the control unit 200 has a relatively low value for the second threshold value. When the difference between the external fine dust concentration and the internal fine dust concentration is relatively large (when the external fine dust concentration is relatively much higher than the internal fine dust concentration), the control unit 200 relatively determines the second threshold value. Can be set to a high value.

As a result, external air inflow can be minimized.

Here, as an example, when the second control mode controls the ventilation device 20 to the internal circulation mode, when the carbon dioxide concentration in the internal space S is greater than or equal to the carbon dioxide threshold (the second threshold), the ventilation device It may be a mode for controlling the 20 to the external ventilation mode.

To explain this in more detail, as described above, the second control mode implemented when the internal fine dust concentration is less than the external fine dust concentration (T4-T5), the carbon dioxide concentration in the internal space S is the carbon dioxide threshold value. In the case above, it may be a mode that preferentially controls the ventilation device 20 to the internal circulation mode, and if the control unit 200 drives the ventilation device 20 to the internal circulation mode, the internal space ( When the carbon dioxide concentration of S) is greater than or equal to the carbon dioxide threshold, it may be a mode for controlling the ventilation device 20 to the external ventilation mode.

As a result, while minimizing the inflow of external air, there is an advantage of lowering the carbon dioxide concentration in the interior space (S).

Here, as an example, when the control unit 200 controls the ventilation device 20 from the internal ventilation mode to the external ventilation mode in the second control mode, it is possible to implement humidification by controlling a humidifier installed in a building. have.

For example, the humidifier may be a device installed in a building to humidify the interior space S to increase humidity.

In one example, the control unit 200 may control the driving of the humidifier as well as the ventilation device 20.

When humidifying the interior space (S), the amount of fine dust on the interior space (S) can be reduced by moving in the air by humidification.

Here, as an example, as shown in Figure 5, the receiver 100 may receive the humidity information from the humidity sensing device installed in the interior space (S).

Here, the controller 200 may control the driving of the humidifier based on the humidity information.

If, as shown in Figure 5 (a), the control unit 200 may stop the operation of the humidifier when the humidity of the interior space (S) reaches the humidity threshold (C6), the interior space When the humidity of (S) reaches the lower humidity limit (C7), the humidifier can be driven.

On the other hand, in the second ventilation mode described above, the controller 200 may stop driving of the humidifier even if the humidity of the internal space S does not reach the humidity threshold C6.

In more detail, in the second ventilation mode (period after the second time point T2), the control unit 200 sets a lower humidity adjustment threshold than the humidity threshold C6, and the internal space S When the humidity of) is greater than or equal to the humidity adjustment threshold, driving of the humidifier may be stopped.

In one example, the humidity adjustment threshold may be the same value as the lower humidity limit (C7).

As a result, the humidity of the interior space S can be kept relatively low.

In addition, in the second ventilation mode, the control unit 200 may set a lower humidity adjustment limit C8 for realizing driving of the humidifier.

For example, the lower humidity adjustment limit C8 may be lower than the humidity adjustment threshold.

That is, in the second ventilation mode, the control unit 200 stops driving the humidifier when the humidity of the internal space S reaches the humidity adjustment threshold, and the humidity of the internal space S is When the humidity adjustment limit is reached, driving of the humidifier may be implemented to maintain relatively low humidity.

As a result, in the second control mode, the control unit 200 can implement a relatively large amount of humidification in the interior space S, thereby further reducing fine dust in the interior space S.

Likewise, the humidity adjustment threshold and the humidity adjustment lower limit C8 may be varied by the control unit 200 based on the fine dust concentration of the fine dust prediction information and a duration longer than the fine dust threshold C1.

For example, the method for automatically controlling fine dust reduction through predictive control according to another embodiment of the present invention receives carbon dioxide concentration information, external fine dust concentration information, and internal fine dust concentration information through the receiver 100. The step and implementing the ventilation of the building on the basis of the carbon dioxide concentration information, the external fine dust concentration information and the internal fine dust concentration information through the control unit 200.

That is, the method for automatically controlling fine dust-reducing buildings through the predictive control includes the fine-dust reduction automatic building control system 10 through the predictive control described above and / or the building automatic control system 10 for improving the internal air quality through fine dust reduction. ) Can mean a way to automatically control a building.

Systems and methods according to the above-described embodiment may be implemented by the control unit 200.

The system according to the above-described embodiment, in addition to the control unit 200 and the receiving unit 100, a transmitting unit 300 that transmits predetermined information / data to the management device of the administrator, is prescribed by the administrator to implement the above-described embodiments. The input unit 500 for receiving command data / controlled / calculated expressions, and the like, may further include a memory unit 400 for storing predetermined data / information for implementing the above-described embodiments.

For example, the receiving unit 100, the control unit 200, the transmitting unit 300 and the memory unit 400 may be formed in combination with a device called an MCU, and the input unit 500 is a central control device , CCMS or a manager's management device.

In addition, as an example, the input unit 500 is a DDC (Digital to Digital Converter) input unit 530 for receiving predetermined information / data described above, a sensor input unit 520 for receiving predetermined information / data from various sensors, and A heterogeneous input unit 510 for receiving predetermined information / data from a heterogeneous device that is another device may be provided.

In addition, the above-described system may further include a display unit 600 capable of displaying predetermined information / data to the administrator.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited to this, and various modifications or changes can be made within the spirit and scope of the present invention. It will be apparent to those skilled in the art, and thus, such changes or modifications are found to fall within the scope of the appended claims.

100: receiver
200: control unit
300: transmitter
400: memory unit

Claims (7)

In the building automatic control system to improve the internal air quality through reduction of fine dust,
A receiving unit that receives carbon dioxide concentration information from a carbon dioxide sensing device installed in an interior space in a building, external fine dust concentration information from an external fine dust sensing device installed outside a building, and internal fine dust concentration information from an internal fine dust sensing device installed in the interior space. ; And
Includes a control unit for implementing ventilation of a building by implementing a driving of a ventilation device installed in a building based on the carbon dioxide concentration information, the external fine dust concentration information, and the internal fine dust concentration information.
-The ventilation device has an external ventilation mode for introducing outside air into the interior space for ventilation and an internal circulation mode for circulating air in the interior space-
The control unit,
When the concentration of internal fine dust is greater than the concentration of external fine dust, ventilation is implemented in the first control mode,
If the inside fine dust concentration is less than the outside fine dust concentration, ventilation is implemented in the second control mode.
The first control mode,
When the concentration of carbon dioxide in the internal space is greater than or equal to a preset carbon dioxide threshold or when the concentration of internal fine dust in the internal space is greater than or equal to a preset fine dust threshold, a mode for controlling the ventilation device to the external ventilation mode,
The second control mode,
When the concentration of carbon dioxide in the interior space is greater than or equal to a preset carbon dioxide threshold, this mode controls the ventilation device to the internal circulation mode,
In the first control mode, the carbon dioxide threshold is a first threshold,
In the second control mode, the carbon dioxide threshold is a second threshold different from the first threshold,
The second threshold value,
It is changed by the control unit based on the external fine dust concentration,
Building automatic control system that improves internal air quality by reducing fine dust.
delete delete According to claim 1,
The second threshold value,
It is fluctuated by the control unit based on the difference between the external fine dust concentration and the internal fine dust concentration,
Building automatic control system that improves internal air quality by reducing fine dust.
According to claim 1,
The second control mode,
When the ventilation system is controlled to the internal circulation mode, but the carbon dioxide concentration in the internal space is greater than or equal to the carbon dioxide threshold,
In the mode for controlling the ventilation device to the external ventilation mode,
Building automatic control system that improves internal air quality by reducing fine dust.
The method of claim 5,
The control unit,
In the second control mode,
When controlling the ventilation device to the external ventilation mode,
Realizing humidification by controlling the humidifier installed in the building,
Building automatic control system that improves internal air quality by reducing fine dust.
Receiving carbon dioxide concentration information, external fine dust concentration information and internal fine dust concentration information through the receiver according to claim 1; And
Including the carbon dioxide concentration information, the external fine dust concentration information and the internal fine dust concentration information through the control unit according to claim 1 to implement the operation of the ventilation device installed in the building to implement ventilation of the building; includes And
-The ventilation device has an external ventilation mode for introducing outside air into the interior space for ventilation and an internal circulation mode for circulating air in the interior space-
The control unit,
When the concentration of internal fine dust is greater than the concentration of external fine dust, ventilation is implemented in the first control mode,
If the inside fine dust concentration is less than the outside fine dust concentration, ventilation is implemented in the second control mode.
The first control mode,
When the concentration of carbon dioxide in the internal space is greater than or equal to a preset carbon dioxide threshold or when the concentration of internal fine dust in the internal space is greater than or equal to a preset fine dust threshold, a mode for controlling the ventilation device to the external ventilation mode,
The second control mode,
When the concentration of carbon dioxide in the interior space is greater than or equal to a preset carbon dioxide threshold, this mode controls the ventilation device to the internal circulation mode,
In the first control mode, the carbon dioxide threshold is a first threshold,
In the second control mode, the carbon dioxide threshold is a second threshold different from the first threshold,
The second threshold value,
It is changed by the control unit based on the external fine dust concentration,
Automatic building control method to improve internal air quality by reducing fine dust.

Images