JP7346798B2 - Light transmission amount control device and program - Google Patents

Description

The present invention relates to a light transmission amount control device and a program.

Conventionally, there have been the following two technologies that can be applied to realize an appropriate light environment in a building.

That is, Patent Document 1 discloses a fixedly installed solar radiation meter that measures the amount of solar radiation on a building, a linear separation calculation unit that calculates the amount of direct solar radiation from the measurement results obtained from the solar radiation meter, a cloudy weather determination unit that compares the amount of direct solar radiation obtained by the orthogonal separation calculation unit with a threshold value, and determines whether the weather near the building is cloudy based on the comparison result; and the cloudy weather determination unit A blind control device is disclosed, comprising: a control section that controls a blind installed in the building according to a determination result.

Further, in Patent Document 2, in a power consumption reduction support system that supports the reduction of power consumption in a building, a measurement unit that measures external light illuminance, which is the illuminance of light irradiated into the interior of the building; an indoor illuminance calculation unit that calculates the indoor illuminance of the light based on the external light illuminance; and a power reduction potential amount that calculates the possible reduction amount of power consumed by the indoor lighting equipment based on the calculated indoor illuminance. A power consumption reduction support system is disclosed, which includes a calculation unit.

Japanese Patent Application Publication No. 2013-14961 Japanese Patent Application Publication No. 2013-58395

However, the technologies described in Patent Document 1 and Patent Document 2 do not allow direct solar radiation to the target building, such as buildings, trees, etc. adjacent to the target building, or eaves provided on the building itself. Since no consideration is given to shielding objects, there is a problem in that it is not always possible to realize an appropriate light environment inside the building.

The present disclosure has been made in view of the above circumstances, and aims to provide a light transmission amount control device and program that can realize an appropriate light environment in a building.

The light transmission amount control device according to the present invention according to claim 1 includes position information indicating the position of the sun, building shape information indicating the shape of a building targeted for light transmission amount control, and information on the location of the building located outdoors. , derive a direct solar radiation incidence rate indicating the incidence rate of the direct solar radiation to an opening provided in the building, based on shielding object shape information indicating the shape of a shielding object that blocks direct solar radiation from the sun to the building. an incidence rate deriving unit; a solar radiation amount deriving unit that derives a direct solar radiation amount corresponding to the azimuth and inclination angle of the opening based on the solar radiation amount detected by the solar radiation sensor installed outdoors; Based on the comparison result between the amount of direct solar radiation obtained by multiplying the solar radiation incidence and the amount of direct solar radiation and a predetermined threshold value, the amount of light transmitted by the direct solar radiation by the amount of light transmitted adjustment section provided in the opening A control section that controls the.

According to the light transmission amount control device according to the present invention as set forth in claim 1, the position information indicating the position of the sun, the building shape information indicating the shape of the building targeted for the light transmission amount control, and the information on the outside of the building. Based on shielding object shape information indicating the shape of an existing shielding object that blocks direct solar radiation from the sun to the building, a direct solar radiation incidence rate indicating the incidence rate of the direct solar radiation to an opening provided in the building is determined. and derive the amount of direct solar radiation corresponding to the azimuth and inclination angle of the opening based on the amount of solar radiation detected by the solar radiation sensor installed outdoors, and the derived direct solar radiation incidence rate. Controlling the amount of light transmitted by the direct solar radiation by a light transmitted amount adjustment unit provided in the opening, based on a comparison result between the amount of direct solar radiation obtained by multiplying the amount of direct solar radiation and a predetermined threshold value. This makes it possible to create an appropriate light environment within the building.

A light transmission amount control device according to the present invention according to a second aspect of the present invention is the light transmission amount control device according to the first aspect, in which the control section is configured to: The amount of light transmitted is controlled.

According to the light transmission amount control device according to the present invention as set forth in claim 2, by controlling the light transmission amount according to the presence status of the person inside the building, the amount of light transmitted is Comfort can be improved.

The light transmission amount control device according to the present invention according to claim 3 is the light transmission amount control device according to claim 1 or 2, wherein the control section divides the inside of the building into a plurality of areas. The amount of light transmitted is controlled according to the incident situation of the direct solar radiation for each divided region.

According to the light transmission amount control device according to the present invention as set forth in claim 3, the interior of the building is divided into a plurality of regions, and the light transmission amount is adjusted according to the incident situation of the direct solar radiation for each divided region. By controlling the above, it is possible to more efficiently control the light environment inside the building.

The light transmission amount control device according to the present invention according to claim 4 is the light transmission amount control device according to any one of claims 1 to 3, wherein the control section is configured to control the amount of light transmitted during the intermediate period. The amount of light transmitted is controlled in at least one of the following cases: and when the air conditioning state inside the building is a cooling state.

According to the light transmission amount control device according to the present invention as set forth in claim 4, the light transmission amount is controlled in at least one of the intermediate period and the case where the air conditioning state inside the building is a cooling state. By doing so, it is possible to obtain an energy saving effect on the air conditioning equipment in the building.

A light transmission amount control device according to the present invention according to claim 5 is the light transmission amount control device according to any one of claims 1 to 4, wherein the incidence rate deriving section is a computer system. The direct solar incidence rate is derived through simulation.

According to the light transmission amount control device according to the present invention as set forth in claim 5, the direct solar incidence rate can be derived more easily by deriving the direct solar incidence rate by computer simulation.

The light transmission amount control device according to the present invention according to claim 6 is the light transmission amount control device according to any one of claims 1 to 5, wherein the light transmission amount adjustment section is configured to adjust the amount of light transmitted. At least one of a light film and an electric blind.

According to the light transmission amount control device according to the present invention as set forth in claim 6, the light transmission amount adjustment section is at least one of a light control film and an electric blind, so that at least one of the light control film and the electric blind is controlled. can be used to create an appropriate light environment within a building.

A program according to the present invention according to claim 7 is for causing a computer to function as each part of the light transmission amount control device according to any one of claims 1 to 6.

According to the program according to the present invention as set forth in claim 7, position information indicating the position of the sun, building shape information indicating the shape of the building targeted for light transmission amount control, and information about the sun existing outside the building. Based on shielding object shape information indicating the shape of a shielding object that blocks direct solar radiation from the building, derive a direct solar radiation incidence rate indicating the incidence rate of the direct solar radiation to an opening provided in the building, and , based on the amount of solar radiation detected by the solar radiation sensor installed outdoors, derive the amount of direct solar radiation corresponding to the azimuth and inclination angle of the opening, and the derived direct solar radiation incidence rate and the amount of direct solar radiation. By controlling the amount of direct solar radiation transmitted by the light transmitting amount adjustment unit provided in the opening, based on the comparison result between the amount of direct solar radiation obtained by multiplying It is possible to realize an appropriate light environment in.

As described above, according to the present invention, it is possible to realize an appropriate light environment within a building.

FIG. 2 is a block diagram illustrating an example of a hardware configuration of a light transmission amount control device according to an embodiment. FIG. 2 is a block diagram showing an example of a functional configuration of a light transmission amount control device according to an embodiment. FIG. 1 is a perspective view showing an example of the configuration of a building according to an embodiment. FIG. 2 is a side cross-sectional view showing an example of the configuration of a building according to an embodiment and explaining the arrangement positions of various parts. It is a sectional view showing an example of the composition of the window part concerning an embodiment. It is a schematic diagram showing an example of composition of a building related information database concerning an embodiment. FIG. 2 is a schematic diagram showing an example of the configuration of a solar position information database according to an embodiment. 7 is a flowchart illustrating an example of a light transmission amount control process according to the first embodiment. FIG. 2 is a front view showing an example of the configuration of an initial information input screen according to the embodiment. It is a figure provided for explanation of the light control film group and the derivation|leading-out method of a direct solar incidence rate based on embodiment. 12 is a flowchart illustrating an example of light transmission amount control processing according to the second embodiment. FIG. 7 is a side cross-sectional view for explaining a method for determining the state of sunlight entering the target zone according to the second embodiment. FIG. 3 is a block diagram illustrating an example of the hardware configuration of a light transmission amount control device according to another embodiment. FIG. 3 is a block diagram illustrating an example of a functional configuration of a light transmission amount control device according to another embodiment.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings.

[First embodiment]
First, the configuration of the light transmission amount control device 10 according to the present embodiment will be described with reference to FIGS. 1 and 2. Note that examples of the light transmission amount control device 10 include information processing devices such as a personal computer and a server computer.

The light transmission amount control device 10 according to the present embodiment includes a CPU (Central Processing Unit) 11, a memory 12 as a temporary storage area, a nonvolatile storage section 13, an input section 14 such as a keyboard and a mouse, and a display such as a liquid crystal display. 15, a medium read/write device (R/W) 16, and a communication interface (I/F) section 18. The CPU 11, memory 12, storage section 13, input section 14, display section 15, medium reading/writing device 16, and communication I/F section 18 are connected to each other via a bus B1. The medium read/write device 16 reads information written in the recording medium 17 and writes information to the recording medium 17 .

The storage unit 13 is realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, or the like. A light transmission amount control program 13A is stored in the storage unit 13 as a storage medium. The light transmission amount control program 13A is implemented by setting the recording medium 17 on which the light transmission amount control program 13A is written in the medium reading/writing device 16, and reading the light transmission amount control program 13A from the recording medium 17. This causes the data to be stored in the storage unit 13. The CPU 11 reads the light transmission amount control program 13A from the storage unit 13, expands it in the memory 12, and sequentially executes the processes included in the light transmission amount control program 13A.

The storage unit 13 also stores a building-related information database 13B and a solar position information database 13C. Details of the building-related information database 13B and the solar position information database 13C will be described later.

On the other hand, as shown in FIG. 1, the communication I/F section 18 of the light transmission amount control device 10 according to the present embodiment includes a solar radiation sensor 50, an air conditioner 52, a camera 54, and a light control device as a light transmission amount adjustment section. A film 56 is connected. Therefore, the CPU 11 can acquire the amount of solar radiation obtained by the solar radiation sensor 50 and the image information obtained by photographing with the camera 54 via the communication I/F unit 18. Further, the CPU 11 can control the air conditioning operation by the air conditioner 52 and control the amount of transmission through the light control film 56. Note that details of the solar radiation sensor 50, air conditioner 52, camera 54, and light control film 56 will be described later.

Next, with reference to FIG. 2, the functional configuration of the light transmission amount control device 10 according to the present embodiment will be described. As shown in FIG. 2, the light transmission amount control device 10 includes an incidence rate derivation section 11A, a solar radiation amount derivation section 11B, and a control section 11C. By executing the light transmission amount control program 13A, the CPU 11 of the light transmission amount control device 10 functions as an incident rate derivation section 11A, a solar radiation amount derivation section 11B, and a control section 11C.

The incidence rate deriving unit 11A according to the present embodiment provides position information indicating the position of the sun (hereinafter referred to as "sun position information"), a building targeted for light transmission amount control (hereinafter referred to as "control target building"). ), and shielding object shape information indicating the shape of a shielding object existing outdoors of the controlled building that blocks direct solar radiation from the sun to the controlled building. A direct solar radiation incidence rate indicating the incidence rate of the above-mentioned direct solar radiation with respect to the opening provided in the is derived. The incidence rate deriving unit 11A according to the present embodiment acquires solar position information from a solar position information database 13C built in advance in the storage unit 13, and stores the building shape information and the shielding object shape information in the storage unit 13 in advance. It is acquired from the constructed building-related information database 13B.

Then, the incidence rate deriving unit 11A according to this embodiment derives the direct solar incidence rate by computer simulation. Note that the computer simulation applied in this embodiment will be described in detail later.

Furthermore, the solar radiation amount deriving unit 11B according to the present embodiment derives the direct solar radiation amount corresponding to the azimuth and inclination angle of the opening, based on the solar radiation amount detected by the solar radiation sensor 50 provided outdoors. do. Note that the method for deriving the direct solar radiation amount by the solar radiation amount deriving unit 11B will be described in detail later.

Then, the control unit 11C according to the present embodiment calculates the direct solar radiation incident amount obtained by multiplying the direct solar radiation incidence rate derived by the incidence rate deriving unit 11A and the direct solar radiation amount derived by the solar radiation amount deriving unit 11B. The amount of direct solar radiation transmitted through the light control film 56 provided in the opening is controlled based on the comparison result between and a predetermined threshold value.

The control unit 11C according to the present embodiment controls the amount of light transmitted according to the presence of people inside the controlled building. Further, the control unit 11C according to the present embodiment controls the amount of light transmission described above in the intermediate period and when the air conditioning state by the air conditioner 52 inside the controlled building is in the cooling state. Note that the control unit 11C according to the present embodiment uses an image indicated by the image information acquired from the camera 54 to grasp the presence status of a person inside the building to be controlled.

Next, the configuration of the controlled building according to this embodiment will be described with reference to FIGS. 3 to 5.

As shown in FIGS. 3 and 4, the controlled building 30 according to the present embodiment is constructed on a foundation (not shown) provided on the ground G. Although FIG. 4 is a cross-sectional view, hatching (diagonal lines) representing the cross section is omitted to avoid confusion.

The controlled building 30 has a roof section 32 and an outer peripheral wall section 34 . The roof portion 32 of this embodiment is a sloped roof. Note that the roof portion 32 is not limited to a sloped roof, but may be a flat roof. This roof portion 32 is formed with an opening 40 for letting light from the sun T (hereinafter referred to as "sunlight P") into the room 20. A plurality of windows 42 are provided in the opening 40 in a grid pattern. In addition, in the explanatory diagram of FIG. 12 described later, the opening 40 and the window 42 are illustrated along the horizontal direction and the vertical direction for easy understanding.

As shown in FIG. 5, the window portion 42 includes a window frame (not shown) and a glass portion 44 provided within the window frame. In this embodiment, the glass portion 44 has a double glass structure including two transparent glass plates 43 and 45.

The above-mentioned light control film 56 is pasted on the inner surface of the outer glass plate 43 composing the glass portion 44 on the indoor 20 side. Note that the light control film 56 only needs to be attached to at least one of the glass plates 43 and 45. Further, the glass portion 44 may be made of single-layered glass instead of double-layered glass, or may be composed of triple-layered or more glass.

The transmittance of the light control film 56 increases or decreases depending on the applied voltage. Specifically, when the voltage applied to the light control film 56 increases, the transmittance of the light control film 56 increases, and the glass portion 44 approaches transparency. On the other hand, when the voltage applied to the light control film 56 decreases, the transmittance of the light control film 56 decreases, and the glass portion 44 becomes like frosted glass. Note that when no voltage is applied to the light control film 56, the transmittance of the light control film 56 is minimum.

In the controlled building 30 of this embodiment, normally, under the control of the CPU 11, the maximum voltage is applied to the light control film 56 to maximize the transmittance of the light control film 56, and the glass portion 44 becomes transparent. ing. Therefore, sunlight P is normally illuminated into the room 20.

As shown in FIG. 4, the above-mentioned cameras 54 are provided at a plurality of locations in the room 20, each at a corner of the room 20 in this embodiment. The camera 54 of this embodiment is used to detect the person H present in the room 20. Note that in this embodiment, the cameras 54 are provided at a plurality of locations (four locations in this embodiment), but the present invention is not limited to this. The camera 54 may be provided at least at one location in the room 20. Furthermore, a human sensor such as an infrared sensor or an ultrasonic sensor may be used instead of the camera 54 to detect the person H present in the room 20.

Further, as shown in FIG. 4, the above-mentioned air conditioner 52 is provided in the room 20 of the controlled building 30. In this embodiment, in order to avoid complications, a case will be described in which only one air conditioner 52 is installed in the room 20, but it goes without saying that the present invention is not limited to this.

Furthermore, the above-mentioned solar radiation sensor 50 is provided at the top of the roof 32 of the controlled building 30 and at a position where direct solar radiation from the sun is not blocked by a shielding object existing outside of the controlled building 30. . The solar radiation sensor 50 according to the present embodiment is capable of measuring the total solar radiation amount on a horizontal plane. In this embodiment, in order to avoid complications, a case will be described in which only one solar radiation sensor 50 is installed, but it goes without saying that the invention is not limited to this.

Next, with reference to FIG. 6, the building-related information database 13B according to this embodiment will be described. As shown in FIG. 6, the building-related information database 13B according to the present embodiment includes building name, building position information, and three-dimensional CAD (Computer Aided Design) information for each building handled by the light transmission amount control device 10. Each piece of information is stored in association with each other.

The building name is information indicating the name of the corresponding building, and the building position information is information indicating the construction position of the corresponding building. Note that in this embodiment, the address of the corresponding building is used as the building location information, but the information is not limited to this. The building position information may be applied using latitude and longitude information, or may be applied by adding altitude to these addresses or latitude and longitude.

On the other hand, the above three-dimensional CAD information includes building shape information indicating the shape of the corresponding building, and shielding object shape information indicating the shape of a shielding object existing outdoors of the building that blocks direct solar radiation from the sun to the building. (hereinafter referred to as "building-related model"). The above-mentioned shields according to the present embodiment include buildings adjacent to the corresponding building, structures such as telephone poles and bridges, trees, fences installed around the building, as well as buildings installed on the outer wall of the building. This includes eaves, etc.

In this embodiment, a building-related model is created using predetermined three-dimensional CAD software. In this embodiment, Rhinoceros (registered trademark) is used as the three-dimensional CAD software, but the software is not limited to this. For example, other software such as Revit (registered trademark) may be applied as the three-dimensional CAD software.

As described above, the control target building 30 is provided with a light control film 56 for each of the large number of windows 42, and each light control film 56 is grouped into predetermined areas. The three-dimensional CAD information in the building-related information database 13B also includes specific information for specifying the group to which each light control film 56 belongs.

Next, with reference to FIG. 7, the solar position information database 13C according to this embodiment will be explained. As shown in FIG. 7, the solar position information database 13C according to the present embodiment stores the above-mentioned solar position information for each of a plurality of predetermined regions and for each date and time.

Note that in this embodiment, information indicating an address is used as the area, but the area is not limited to this. It is also possible to use the latitude and longitude information of the corresponding location as the region. In addition, in this embodiment, the above date and time is a date and time period from sunrise time to sunset time from January 1st to December 31st in the corresponding region, and for a predetermined time (in this embodiment, 5 minutes). ) interval time is applied; however, it goes without saying that the invention is not limited to this. Furthermore, in this embodiment, as the solar position information, information expressed by two angles, the azimuth angle and the inclination angle, with respect to the sun at the corresponding time on the ground surface in the corresponding area is applied. Needless to say, it is not limited to. Here, the solar position information can be obtained from expanded AMeDAS meteorological data or the like. Moreover, the solar position information can also be calculated from the latitude and longitude of the corresponding position using various approximate formulas.

Next, the operation of the light transmission amount control device 10 according to this embodiment will be explained with reference to FIGS. 8 to 10. When the user inputs an instruction to start executing the light transmission amount control program 13A through the input unit 14, the CPU 11 of the light transmission amount control device 10 executes the light transmission amount control program 13A. The light transmission amount control process shown in FIG. 8 is executed. Here, in order to avoid complications, a case will be described in which the building-related information database 13B and the solar position information database 13C have already been constructed.

In step 200 of FIG. 8, the incidence rate derivation unit 11A controls the display unit 15 to display an initial information input screen having a predetermined configuration, and in step 202, the incidence rate derivation unit 11A controls the Wait for information to be entered.

FIG. 9 shows an example of the initial information input screen according to this embodiment. As shown in FIG. 9, on the initial information input screen according to the present embodiment, a message prompting the user to input the name of the controlled building 30 (the above-mentioned building name) is displayed along with an input area for inputting the building name. 15A is displayed.

As an example, when the initial information input screen shown in FIG. 9 is displayed on the display unit 15, the user inputs the building name of the target controlled building 30 into the input area 15A via the input unit 14, and then exits. Specify button 15E. In response, an affirmative determination is made in step 202, and the process moves to step 204.

In step 204, the incidence rate deriving unit 11A reads building position information and three-dimensional CAD information corresponding to the building name input on the initial information input screen from the building-related information database 13B. In step 206, the incidence rate deriving unit 11A calculates all solar position information corresponding to the date and time from this point to the sunset time of the day in the area corresponding to the construction position indicated by the read building position information. Read from the information database 13C. Here, the incidence rate deriving unit 11A applies the area when the same area as the construction position indicated by the building position information is registered in the solar position information database 13C, and If it is not registered in the location information database 13C, the area closest to the construction location is applied.

In step 208, the incidence rate deriving unit 11A calculates the direct solar incidence rate DR using the following equation (1) for each time read from the solar position information database 13C and for each group of light control films 56. As an example, as shown in FIG. 10, SA in equation (1) represents the area where direct solar radiation is incident on the light control film 56 belonging to the corresponding group, and GA represents the area where direct solar radiation is incident on the light control film 56 belonging to the corresponding group. It represents the area of the entire light control film 56.

DR=SA/GA (1)

In other words, the direct solar incidence rate DR calculated by equation (1) is calculated based on the solar radiation incidence rate DR, which is specified by the above-mentioned shielding object shape information, solar position information, etc., with respect to the area GA of the entire dimming film 56 belonging to the corresponding group. The ratio of the area SA to which sunlight is directly incident on the entire optical film 56 is shown.

In this embodiment, the area SA is obtained by computer simulation using Grasshopper (registered trademark), which is a function provided in Rhinoceras (registered trademark), but the present invention is not limited to this. For example, other software such as Dynamo (registered trademark) may be applied as the software for deriving the area SA, or the user of the light transmission amount control device 10 may calculate the area SA via the input unit 14. It may also be in the form of input.

In step 210, the solar radiation amount deriving unit 11B inputs information indicating the horizontal surface global solar radiation amount from the solar radiation sensor 50, and in step 212, the solar radiation amount deriving unit 11B inputs the horizontal surface global solar radiation amount indicated by the input information. Using this, the amount of direct solar radiation is derived for each group of light control films 56 using the Udagawa/Kimura estimation formula. Regarding the Udagawa/Kimura estimation formula, see ``Udagawa, Kimura, ``Estimation of direct solar radiation from horizontal surface global solar radiation observation'', Architectural Institute of Japan Papers Report No. 267, May 1978'', etc. Since this is a conventionally known technique, further explanation will be omitted. However, the method for deriving direct solar radiation is not limited to the method using the Udagawa/Kimura estimation formula, but can also be derived using other methods such as calculating from the measured values of a sun tracking type solar radiation meter. Good too. In the method of calculating from the measured values of a sun-tracking type pyranometer, the amount of direct solar radiation and the amount of sky solar radiation is measured with the sun-tracking type pyranometer, and the amount of solar radiation in each direction and slope is calculated based on the measured values. Calculations are made for each group of optical films 56.

In step 214, the control unit 11C multiplies the direct solar radiation incident rate DR obtained by the above process by the amount of direct solar radiation for each group of the light control film 56. Calculate the incident amount.

In step 216, the control unit 11C determines whether or not the air conditioner 52 is in operation, and if the determination is negative, it is assumed that the period corresponds to the intermediate period, and the process proceeds to step 222, while the determination is affirmative. If so, the process moves to step 218.

In step 218, the control unit 11C determines whether or not the air conditioner 52 is in cooling operation. If the determination is affirmative, the process proceeds to step 222, while if the determination is negative, the process proceeds to step 220. In step 220, the control unit 11C controls each light control film 56 so that the transmittance of all the light control films 56 becomes the maximum value, so that all the light control films 56 are in a fully open state, Thereafter, the process moves to step 234.

In step 222, the control unit 11C controls a plurality of light control films 56 (hereinafter referred to as "target light control film group") belonging to any one group in each group of light control films 56, for the corresponding direct sunlight incidence. It is determined whether the amount is greater than a predetermined threshold value, and if the determination is affirmative, the process moves to step 224.

In this embodiment, 60 W/m ² is applied as the threshold value. This is based on the contents of 2) on page 3 of ``Inoue, Matsuo, ``Survey on the actual usage of solar shading devices,'' Architectural Institute of Japan Planning Papers Report No. 378, August 1988''. There is. However, the present invention is not limited to this form, and the threshold value may be changed as appropriate depending on the comfort required for the light transmission amount control process, the energy saving effect, the season when executing the light transmission amount control process, etc. .

In step 224, the control unit 11C brings all the light control films 56 of the target light control film group into a fully closed state by setting the transmittance of each light control film 56 of the target light control film group to the minimum value. Each light control film 56 is controlled in such a manner that the process moves to step 232.

On the other hand, if a negative determination is made in step 222, the process moves to step 226, and the control unit 11C determines whether or not there are people in the target zone (in this embodiment, the entire area inside the controlled building 30). is determined, and if the determination is affirmative, the process moves to step 228. Note that in this embodiment, whether or not a person exists in the target zone is determined by determining whether or not a person is included in the image indicated by the image information obtained from the camera 54; It is not limited. For example, a form may be adopted in which a human sensor is provided at the entrance/exit of the controlled building 30, and the human sensor detects the entry of a person into the controlled building 30, thereby making the determination.

In step 228, the control unit 11C sets the transmittance of each light control film 56 of the target light control film group to the maximum value, thereby bringing all the light control films 56 of the target light control film group into a fully open state. Each light control film 56 is controlled in such a manner that the process moves to step 232.

On the other hand, if a negative determination is made in step 226, the process proceeds to step 230, and the control unit 11C sets the transmittance of each light control film 56 of the target light control film group to the minimum value. Each light control film 56 is controlled so that all of the light control films 56 are in a fully closed state, and then the process moves to step 232.

In step 232, the control unit 11C determines whether or not the processes of steps 222 to 230 have been completed for all groups of light control films 56, and if the determination is negative, the process returns to step 222, and the determination is affirmative. When this happens, the process moves to step 234. Note that when repeatedly performing the processing from step 222 to step 232, the group of light control films 56 that have not been targeted for processing up to that point is defined as the above-mentioned target light control film group.

By repeating the above steps 222 to 232, it is possible to set suitable open/close states for all the light control films 56 according to the amount of direct solar radiation and the presence of people in the target zone.

In step 234, the control unit 11C determines whether a predetermined end timing has arrived, and if the determination is negative, the process returns to step 210, while if the determination is affirmative, the main light transmission amount control is performed. Finish the process. Note that in this embodiment, the timing at which the user inputs an instruction to terminate the light transmission amount control program 13A via the input unit 14 is used as the termination timing, but the timing is not limited to this. do not have. For example, a configuration may be adopted in which a timing beyond the sunset time on the execution day of the light transmission amount control process is applied as the end timing.

As explained above, according to the present embodiment, position information indicating the position of the sun, building shape information indicating the shape of the building targeted for light transmission amount control, and information on information from the sun existing outdoors of the building are provided. an incidence rate derivation unit that derives a direct solar radiation incidence rate indicating an incidence rate of the direct solar radiation to an opening provided in the building based on shielding object shape information indicating a shape of a shielding object that blocks direct solar radiation to the building; 11A, a solar radiation amount deriving unit 11B that derives a direct solar radiation amount corresponding to the azimuth and inclination angle of the opening based on the solar radiation amount detected by the solar radiation sensor installed outdoors; Based on the comparison result between the amount of direct solar radiation obtained by multiplying the rate and the amount of direct solar radiation and a predetermined threshold value, the amount of light transmitted by the direct solar radiation is controlled by the amount of light transmitted adjusting section provided in the opening. The control unit 11C includes a control unit 11C. Therefore, an appropriate light environment within the building can be achieved.

Further, according to the present embodiment, the amount of light transmitted through the light control film 56 is controlled depending on the presence of a person inside the controlled building 30. Therefore, comfort for people inside the controlled building 30 can be improved.

Further, according to the present embodiment, the amount of light transmitted through the light control film 56 is controlled in the intermediate period and when the air conditioning state inside the controlled building 30 is in the cooling state. Therefore, it is possible to obtain an energy saving effect on the air conditioning equipment in the controlled building 30.

Further, according to the present embodiment, the direct solar incidence rate is derived by computer simulation. Therefore, the direct solar incidence rate can be derived more easily.

Furthermore, according to the present embodiment, the light control film 56 is used as the light transmission amount adjusting section. Therefore, using the light control film 56, it is possible to realize an appropriate light environment within the controlled building 30.

[Second embodiment]
In the second embodiment, the interior of the controlled building 30 is divided into a plurality of regions, and the amount of light transmitted through the light control film 56 is controlled according to the incident situation of direct solar radiation in each divided region. Let's discuss an example. Note that the configuration of the light transmission amount control device 10 according to the second embodiment is the same as the light transmission amount control device 10 according to the first embodiment (see FIGS. 1 and 2), so the description here will be omitted. is omitted.

Next, with reference to FIGS. 11 and 12, the operation of the light transmission amount control device 10 according to the second embodiment when executing the light transmission amount control process will be described. Note that the steps in FIG. 11 that perform the same processing as in FIG. 8 are given the same step numbers as in FIG. 8, and the explanation thereof will be omitted as much as possible.

The light transmission amount control process according to the second embodiment is different from the light transmission amount control process according to the first embodiment in that the processes in steps 224 to 230 are replaced with the processes in steps 225, 227, 229, and 231. The only difference is that it is replaced with .

That is, in the light transmission amount control process shown in FIG. 11, if a negative determination is made in step 222, the process proceeds to step 231, while if an affirmative determination is made, the process proceeds to step 225.

In step 225, the control unit 11C determines whether sunlight is shining into the zone where a person is present, and if the determination is affirmative, the process proceeds to step 227. Note that in this embodiment, it is determined whether or not the sun is shining into a zone where a person is present as shown below.

That is, as shown in FIG. 12 as an example, for example, the indoor 20 of the controlled building 30 is divided into three zones, zone a to zone c, and the determination area is set to a height range from 900 mm to 2000 mm from the floor surface. The range shall be . Furthermore, here, a case will be described in which the zone in which the person H exists is zone a.

In this case, in the state shown in Example 1, direct solar radiation from the sun T is incident on the determination area of zone c, so zone c is determined to be "sun shining", but zone a As for zone b, direct solar radiation from the sun T is not incident on the determination area, so it is determined that "the sun is not shining in" both zone a and zone b.

Similarly, in the state shown in Example 2, direct solar radiation from the sun T is incident on the determination areas of zones b and c, so it is determined that the sun is shining in zones b and c. However, since direct solar radiation from the sun T does not enter the determination area in zone a, it is determined that zone a is "no sunlight."

On the other hand, in the state shown in Example 3, direct solar radiation from the sun T is incident on all zones from zone a to zone c, so it is determined that "the sun is shining in" each zone. Therefore, in this case, only the situation shown in Example 3 results in an affirmative determination in step 225.

Note that the incident area of direct solar radiation from the sun T into the room 20 can be specified from the positional relationship between the position of the sun T and the target light control film group. In this embodiment, this incident area is also obtained by computer simulation using Grasshopper (registered trademark), but it goes without saying that the incident area is not limited to this.

In step 227, the control unit 11C brings all the light control films 56 of the target light control film group into a fully closed state by setting the transmittance of each light control film 56 of the target light control film group to the minimum value. Each light control film 56 is controlled in such a manner that the process moves to step 232.

On the other hand, if a negative determination is made in step 225, the process moves to step 229, and the control unit 11C sets the transmittance of each light control film 56 of the target light control film group to the maximum value. Each light control film 56 is controlled so that all of the light control films 56 are fully opened, and then the process moves to step 232.

Further, in step 231, the control unit 11C sets all the light control films 56 of the target light control film group to a fully open state by setting the transmittance of each light control film 56 of the target light control film group to the maximum value. Each light control film 56 is controlled so as to achieve the following, and then the process moves to step 232.

According to this embodiment, the interior of the controlled building 30 is divided into a plurality of regions (zones), and the amount of light transmitted through the light control film 56 is controlled according to the incident situation of direct solar radiation for each divided region. ing. Therefore, the light environment within the controlled building 30 can be controlled more efficiently.

In addition, although the above-mentioned each embodiment demonstrated the case where the light control film 56 was controlled by each group, it is not limited to this. For example, the light control film 56 may be individually controlled one by one. According to this embodiment, it is possible to reduce the effort required to group the light control films 56.

Further, in each of the embodiments described above, a case has been described in which the light control film 56 is used as the light transmission amount adjusting section, but the present invention is not limited thereto. For example, an electric blind may be used as the light transmission amount adjusting section.

FIGS. 13 and 14 show an example of the configuration of the light transmission amount control device 10 when an electric blind is applied as the light transmission amount adjustment section. Note that the same components in FIGS. 13 and 14 as in FIGS. 1 and 2 are designated by the same reference numerals as in FIGS. 1 and 2.

As shown in FIGS. 13 and 14, this embodiment differs from the light transmission amount control device 10 according to each of the above embodiments only in that the light control film 56 is replaced with an electric blind 58. Note that the operation of the light transmission amount control device 10 in this embodiment is similar to the operation of the light transmission amount control device 10 according to the first embodiment described above with reference to FIG. The only difference is that the optical film 56 is replaced with an electric blind 58. According to this embodiment, an appropriate light environment within the controlled building 30 can be achieved using the electric blind 58. Note that examples of the transmission amount adjusting unit other than the light control film 56 and the electric blind 58 include an electric roll screen, an electric movable louver, and the like.

Further, in each of the above embodiments, a case has been described in which the opening/closing state of the light control film 56 is controlled in consideration of the air conditioning state by the air conditioner 52, but the present invention is not limited to this. For example, the opening/closing state of the light control film 56 may be controlled based only on the comparison result between the amount of direct solar radiation and a threshold value without considering the air conditioning state at all. Similarly, in each of the embodiments described above, a case has been described in which the opening/closing state of the light control film 56 is controlled in consideration of the presence of a person inside the controlled building 30, but the present invention is not limited thereto. For example, the opening/closing state of the light control film 56 may be controlled based only on the comparison result between the amount of direct solar radiation and a threshold value without considering the presence of the person in question. According to these embodiments, compared to each of the embodiments described above, the control load on the control unit 11C can be reduced.

Further, in each of the embodiments described above, a case has been described in which the control target building 30 is selected from a plurality of buildings and set as the control target, but the present invention is not limited to this. For example, it goes without saying that only a single controlled building 30 may be assumed to be the controlled object.

Further, in each of the embodiments described above, a case has been described in which the light control film 56 is controlled to only two states, a fully open state and a fully closed state, but the present invention is not limited to this. For example, by adjusting the voltage applied to the light control film 56, the transmittance of the light control film 56 may be set to an intermediate value.

Furthermore, in each of the embodiments described above, a case has been described in which the solar radiation sensor 50 is provided on the roof portion 32 of the controlled building 30, but the present invention is not limited thereto. For example, if the direct solar radiation from the sun is not blocked by a shielding object that exists outdoors of the control target building 30, such as a garden area on the premises of the control target building 30 or the rooftop of another building, the solar radiation can be applied to other positions. It is also possible to provide a sensor 50.

Further, in each of the above embodiments, the case where only one solar radiation sensor 50 is used has been described, but the present invention is not limited to this. For example, if there is a time period in which the direct solar radiation from the sun is blocked by a shielding object existing outdoors of the controlled building 30 at only one location, a plurality of solar radiation sensors 50 may be used to 50 may be switched and used for each time period, thereby eliminating the time period in which the direct solar radiation is blocked.
Further, in each of the above embodiments, no particular mention was made regarding the installation location of the light transmission amount control device 10, but the light transmission amount control device 10 may be installed inside the controlled building 30 or outside the controlled building 30. It may also be installed in various facilities, etc. In addition, the light transmission amount control device 10 is applied as a cloud computer, and each part of the light transmission amount control device 10 and the solar radiation sensor 50, air conditioner 52, camera 54, light control film 56, etc. provided in the controlled building 30 is used. It is also possible to perform communication with the computer and execute the light transmission amount control process.

In addition, in each of the above embodiments, for example, the following hardware structures of the processing unit that executes the processes of the incident rate derivation unit 11A, the solar radiation amount derivation unit 11B, and the control unit 11C are as follows. processor can be used. As mentioned above, the various processors mentioned above include the CPU, which is a general-purpose processor that executes software (programs) and functions as a processing unit, as well as circuit configurations such as FPGA (Field-Programmable Gate Array) after manufacturing. A programmable logic device (PLD), which is a processor that can be changed, and a dedicated electric circuit, which is a processor that has a circuit configuration specifically designed to execute a specific process, such as an ASIC (Application Specific Integrated Circuit) etc. are included.

The processing unit may be configured with one of these various processors, or a combination of two or more processors of the same or different types (for example, a combination of multiple FPGAs or a combination of a CPU and an FPGA). It may be composed of. Further, the processing section may be configured with one processor.

As an example of configuring the processing unit with one processor, first, as typified by computers such as clients and servers, one processor is configured with a combination of one or more CPUs and software, and this processor is There is a form that functions as a processing section. Second, there is a form of using a processor, such as a system on chip (SoC), in which the functions of the entire system including a processing section are realized by one IC (Integrated Circuit) chip. In this way, the processing section is configured as a hardware structure using one or more of the various processors described above.

Furthermore, as the hardware structure of these various processors, more specifically, an electric circuit (circuitry) that is a combination of circuit elements such as semiconductor elements can be used.

10 Light transmission amount control device 11 CPU
11A Incident rate derivation unit 11B Solar radiation derivation unit 11C Control unit 12 Memory 13 Storage unit 13A Light transmission amount control program 13B Building-related information database 13C Sun position information database 14 Input unit 15 Display unit 15A Input area 15E End button 16 Media read/write device 17 Recording medium 18 Communication I/F section 20 Indoor 30 Control target building 32 Roof section 34 Outer wall section 40 Opening section 42 Window section 50 Solar radiation sensor 52 Air conditioner 54 Camera 56 Light control film 58 Electric blind H People

Claims (7)

Position information indicating the position of the sun, building shape information indicating the shape of the building targeted for light transmission amount control, and the shape of the shielding object that exists outside the building and that blocks direct solar radiation from the sun to the building. an incidence rate deriving unit that derives a direct solar radiation incidence rate indicating an incidence rate of the direct solar radiation to an opening provided in the building based on the shielding object shape information shown;
a solar radiation amount deriving unit that derives a direct solar radiation amount corresponding to the azimuth and inclination angle of the opening based on the solar radiation amount detected by the solar radiation sensor installed outdoors;
Based on the comparison result between the amount of direct solar radiation obtained by multiplying the direct solar radiation incidence rate and the amount of direct solar radiation and a predetermined threshold value, the amount of transmission of the direct solar radiation by the light transmission amount adjustment unit provided in the opening is determined. a control unit that controls the amount of light;
Light transmission amount control device equipped with The control unit controls the amount of light transmitted according to the presence of a person inside the building.
The light transmission amount control device according to claim 1. The control unit divides the interior of the building into a plurality of regions, and controls the amount of light transmitted according to the incident situation of the direct solar radiation for each divided region.
The light transmission amount control device according to claim 1 or 2. The control unit controls the amount of light transmitted in at least one of the intermediate period and the case where the air conditioning state inside the building is a cooling state.
The light transmission amount control device according to any one of claims 1 to 3. The incidence rate deriving unit derives the direct solar incidence rate by computer simulation.
The light transmission amount control device according to any one of claims 1 to 4. The light transmission amount adjustment unit is at least one of a light control film and an electric blind.
The light transmission amount control device according to any one of claims 1 to 5. A program for causing a computer to function as each part of the light transmission amount control device according to any one of claims 1 to 6.