JP6315257B2 - Blind control device, blind control system, and blind control method - Google Patents

Description

  The present invention relates to a blind control device, a blind control system, and a blind control method for controlling the amount of solar radiation into a room.

  When controlling the use of daylights in blinds installed in buildings, it is difficult to focus on the use of outdoor light, which may impede the visual environment of workers. In particular, glare has a significant impact on workers. Conventionally, a blind that improves the visual environment by suppressing the glare has been disclosed (see Patent Document 1).

JP 2007-120089 A

"Study on estimation method of daylight illuminance based on solar radiation", Norio Igawa, Sachiyo Shimazaki, Hiroshi Nakamura, Architectural Institute of Japan Planning Series, No.526, 17-24, December 1999

  However, the technique described in Patent Document 1 controls the blind so as to achieve the optimum degree of opening / closing only when the amount of solar radiation is the sum of the air conditioning energy and the illumination energy, and controls only the blind. It wasn't. Therefore, it was difficult to use for a ready-made blind.

  The present invention solves the above-mentioned problems and can be applied to general off-the-shelf blinds and gradation blinds. The blind control device, the blind control system, and the blind that can use daylight while suppressing glare. An object is to provide a control method.

Blind control device according to the present invention, a blind angle calculator for calculating a control angle of the blind from the angle of a blind, glare evaluation value calculation for calculating the glare evaluation value from the state and the control angle of the blind of the outdoor light A glare evaluation value determining unit that determines whether or not the glare evaluation value is equal to or less than a predetermined glare threshold, and when the glare evaluation value is equal to or less than the glare threshold, the blind angle is set to the control angle. And a blind angle determination unit for determining.

  In addition, a blind angle correction unit that obtains a correction control angle obtained by adding or subtracting a predetermined correction angle to the control angle when the glare evaluation value is larger than the glare threshold value is provided.

  The glare evaluation value calculation unit calculates a glare evaluation value at the correction control angle when the correction control angle is smaller than a predetermined correction control threshold value.

  The blind angle determination unit may determine the blind angle as the control angle when the correction control angle is larger than a predetermined correction control threshold value.

  In the blind control system according to the present invention, the blind has a plurality of slats, acquires an outdoor light state, and inputs the outdoor light state to the blind angle calculation unit, and a predetermined one of the plurality of slats. Detecting the angle of the slats and inputting the blind angle calculation unit to the blind angle calculation unit, the blind control device, the slats according to the control angle determined by the blind angle determination unit, And a drive unit for changing the angle of each slat.

According to the blind control unit according to the present invention, glare evaluation to calculate the blind angle calculator for calculating a control angle of the blind from the angle of a blind, glare evaluation value from the state and the control angle of the blind of the outdoor light A value calculating unit, a glare evaluation value determining unit for determining whether or not the glare evaluation value is equal to or less than a predetermined glare threshold, and when the glare evaluation value is equal to or less than the glare threshold, the angle of the blind is controlled. Since it includes a blind angle determination unit that determines the angle, it can be applied to general ready-made blinds and gradation blinds, and daylight can be used while suppressing glare.

  In addition, when the glare evaluation value is larger than the glare threshold value, a blind angle correction unit for obtaining a correction control angle obtained by adding or subtracting a predetermined correction angle to the control angle is provided. Therefore, in order to suppress glare, the blind angle is set. It becomes possible to change it accurately.

  In addition, the glare evaluation value calculation unit calculates the glare evaluation value at the correction control angle when the correction control angle is smaller than a predetermined correction control threshold that is set in advance, so that the glare can be further suppressed. Become.

  Further, when the correction control angle is larger than a predetermined correction control threshold value determined in advance, the blind angle determination unit determines the blind angle as the control angle, so that the blind angle is accurately determined. Is possible.

  According to the blind control system of the present invention, the blind has a plurality of slats, acquires an outdoor light state, and inputs the outdoor light state input to the blind angle calculation unit, and the plurality of slats. A blind angle detection unit that detects a predetermined slat angle and inputs the blind angle calculation unit, the blind control device, and drives the slat according to the control angle determined by the blind angle determination unit, And a driving unit that changes the angles of the plurality of slats, respectively, so that daylight can be used while suppressing glare.

It is a figure which shows the blind control system of this embodiment. It is a figure which shows the control flowchart of the blind control apparatus of this embodiment. It is a figure explaining the various variables of the blind control system of this embodiment. It is a figure which shows the shape variable of the blind 2 of the blind control system of this embodiment. It is a figure which shows the variable of the luminous flux divergence degree of the blind of the blind control system of this embodiment. It is a figure which shows the form factor of the blind of the blind control system of this embodiment. It is a figure which shows the form factor of the blind of the blind control system of this embodiment. It is a figure which shows the form factor of the blind of the blind control system of this embodiment.

  Hereinafter, an embodiment of a blind control device, a blind control system, and a blind control method according to the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a blind control system 1 of the present embodiment.

  In the blind control system 1 of the present embodiment, the blind 2 is suspended from the ceiling 52 toward the floor 53 adjacent to the inside of the window 51. The height of the blind 2 can be changed manually or automatically according to the situation, that is, the distance from the ceiling at the lower end of the blind 2 can be changed. Further, when not in use, all the blinds 2 can be raised to the ceiling 52 side. The blind 2 has a plurality of slats 3. Each of the plurality of slats 3 is formed such that the angle can be changed. In the present embodiment, the angle of the blind 2 is the angle of the uppermost slat 3. Moreover, although the blind control system 1 of this embodiment is applied to the blind 2 attached indoors, it is applicable also to the external blind or the double skin internal blind installed between two glass.

  The blind control device 30 is a device that controls the blind 2. Note that the blind control device 30 of the present embodiment can be applied to a general blind 2. The blind control device 30 detects the glare such as brightness, PGSV, UGR, etc. from the outdoor light state X acquired from the outdoor light detection unit 11 that detects the state of outdoor light such as the amount of solar radiation or outdoor illuminance and the state β of the blind 2. The control angle of the blind is determined using the index calculation logic function F (X, β). The blind control device 30 drives the drive unit 61 to change the slats 3 of the blind 2 to the determined control angles. The drive unit 61 may have a transmission unit (not shown) for each slat 3 so that the angle can be individually changed for each slat 3.

  The blind control device 30 includes a blind angle calculation unit 31 that calculates a control angle of the blind 2 from the state of the outdoor light and the angle of the blind 2, and a glare evaluation value that calculates a glare evaluation value from the state of the outdoor light and the angle of the blind 2. The calculation unit 32, the glare evaluation value determination unit 33 that determines whether or not the glare evaluation value is equal to or less than a predetermined glare threshold value, and if the glare evaluation value is equal to or less than the glare threshold value, the angle of the blind 2 is determined as the control angle And a blind angle correction unit 35 for obtaining a correction control angle obtained by adding or subtracting a predetermined correction angle to the control angle when the glare evaluation value is larger than the glare threshold.

  In the blind control device 30, the glare evaluation value calculation unit 32 preferably calculates the glare evaluation value at the correction control angle when the correction control angle is smaller than a predetermined correction control threshold.

  In the blind control device 30, when the correction control angle is larger than a predetermined correction control threshold value, the blind angle determination unit 34 preferably determines the angle of the blind 2 as the control angle.

  FIG. 2 is a diagram showing a control flowchart of the blind control system 1 of the present embodiment. FIG. 3 is a diagram for explaining various variables of the blind control system 1 of the present embodiment. FIG. 4 is a diagram showing shape variables of the blind 2 of the blind control system 1 of the present embodiment. FIG. 5 is a diagram showing a variable of luminous flux divergence of the blind 2 of the blind control system 1 of the present embodiment. 6-8 is a figure which shows the form factor of the blind 2 of the blind control system 1 of this embodiment.

  In order to determine the angle of the blind 2, first, in step 1, the amount of solar radiation and the date and time are acquired (ST1).

  The solar radiation amount is acquired from the outdoor light state acquisition unit 11 such as a solar radiation sensor. As a solar radiation amount sensor, there are a method using a solar tracking type solar radiation meter or a method using a plurality of solar radiation meters. The solar tracking solar radiation meter directly measures direct light and acquires diffuse solar radiation amount and direct solar radiation amount. When a plurality of solar radiation systems are used, the direct solar radiation amount is obtained from the vertical plane solar radiation measurement value by a calculation formula, and the diffuse solar radiation amount is obtained from the difference between the horizontal solar radiation amount and the direct solar radiation amount. The date and time may be obtained from a clock or the like built in the apparatus.

ただし、
ｈ_sは太陽高度、
Ｉ_Dは直達日射量、
Ｉ_Sは拡散日射量、
である。 Here, in order to obtain a glare evaluation value to be described later, non-patent document 1 is referred to from the amount of solar radiation acquired from a solar radiation amount sensor or the like, and using the following formula (1) and formula (2), FIG. The sky light illuminance E _s , the normal surface direct light illuminance E _d , the feature reflected light illuminance E _{g and the} like are obtained. In addition, although the blind control system 1 of this embodiment calculates | requires illuminance by acquiring the solar radiation amount and date, it is also possible to acquire illuminance directly using an illuminance sensor etc. In this case, the expressions (1) and (2) are omitted.

However,
h _s is the solar altitude,
_ID is direct solar radiation,
I _S is the diffusion amount of solar radiation,
It is.

Further, if the sky light illuminance E _g is obtained and the feature reflectance ρ _g is assumed, the feature reflected light illuminance E _s is obtained by the equation (3).

Further, the sky brightness L _sky and the ground brightness L _g shown in FIG. 5 are obtained by the following expressions (4) and (5).

  In FIG. 3, P is the profile angle, D is the distance between the target resident's eyes and the window, H is the distance between the target resident's eyes and the floor, and τ is the glass transmittance.

Next, in step 2, the blind angle calculation unit 31 calculates the blind control angle β _k of the _kth slat 3 from the angle of the uppermost slat 3 detected by the blind angle detection unit 12 (ST2). Note that all the angles of the slats 3 may be detected.

ただし、
ａはスラット間隔（室内側）、
ｂはスラット間隔（外気側）、
ｓはスラット幅、
β₁は最上スラットのブラインド制御角度、
β_kは最上スラットから数えてｋ番目のスラットのブラインド制御角度、
である。 The calculation method of the blind control angle β _k is determined by the type of the blind 2. In the present embodiment, Expression (6) that is a calculation expression in the case of the gradation blind shown in FIG. 4 is used.

However,
a is the slat interval (inside the room),
b is the slat interval (outside air side),
s is the slat width,
β ₁ is the blind slat control angle of the top slat,
β _k is the blind control angle of the kth slat counting from the top slat,
It is.

Next, in step 3, the glare evaluation value calculation unit 32 calculates the glare evaluation value Y from the solar radiation amount X and the blind control angle β _k (ST3).

ただし、
Ｌ_sは、グレア源平均輝度[cd/m²]、
ωは、グレア源形態係数[sr]、
Ｌ_bは、背景輝度[cd/m²]、
である。 In the present embodiment, as an example of the glare evaluation value Y, a predicted glare index PGSV (Predicted Glare Sensation Vote) from a window surface represented by the following formula (7) described in Patent Document 1 is used. Other glare indexes such as luminance and UGR (Unified Glare Rating) may be used.

However,
L _s is the glare source average luminance [cd / m ² ],
ω is the glare source form factor [sr],
L _b is the background luminance [cd / m ² ],
It is.

As shown in Expression (7), the average luminance L _{s of} the glare source, the form factor ω of the glare source, and the luminance other than the glare source such as the background luminance L _b are obtained. Here, when used for blind control, the brightness of the blind surface corresponds to the brightness of the glare source.

ただし、
１）は、スラットｋ−１の裏面、
２）は、スラットｋの表面、
２）’は、スラットｋの２）面で直射光を受照する面、
２）”は、スラットｋの２）面で２）’以外の面、
Ｒ_1),kは、１）面の光束発散度、
Ｒ_2)',kは、２）’面の光束発散度、
Ｒ_2)",kは、２）”面の光束発散度、
Ｆ_1),kは、１）面の居住者から見た形態係数、
Ｆ_s,kは、天空の居住者から見た形態係数、
Ｆ_g,kは、地表面の居住者から見た形態係数、
Ｆ_2)',kは、２）’面の居住者から見た形態係数、
Ｆ_2),kは、２）面の居住者から見た形態係数、
Ｆ_2)s,kは、天空の２）面から見た形態係数、
Ｆ_2)g,kは、地表面の２）面から見た形態係数、
Ｆ_1)2),kは、２）面の１）面から見た形態係数、
Ｆ_1)2)',kは、２）’面の１）面から見た形態係数、
Ｆ_1)2)",kは、２）”面の１）面から見た形態係数、
Ｆ_1)s,kは、天空の１）面から見た形態係数、
Ｆ_1)g,kは、地表面の１）面から見た形態係数、
である。 An example of a method for calculating the brightness of the blind surface is shown in the following formulas (8) to (11).

However,
1) is the back side of slat k-1,
2) is the surface of slat k,
2) ′ is a surface that receives direct light on the 2) surface of the slat k,
2) "is the surface other than 2) 'on the 2) surface of slat k,
R _{1), k} is 1) the luminous flux divergence of the surface,
R _{2) ', k} is 2)' surface luminous flux divergence,
R _{2) ", k} is 2)" luminous flux divergence on the surface,
F _{1), k} is 1) the form factor as seen from the occupant
F _{s, k} is the form factor as seen from the sky
F _{g, k} is the form factor as seen from the ground surface
F _{2) ', k} is the form factor as seen from 2)' occupants,
F _{2), k} is 2) the form factor as seen from the occupant
F _{2) s, k} is the form factor as seen from the 2) plane of the sky,
F _{2) g, k} is the form factor as seen from 2) surface of the ground surface,
F _{1) 2), k} is the form factor of 2) plane viewed from 1) plane,
F _{1) 2) ', k} is the form factor of the 2)' face as seen from the 1) face,
F _{1) 2) ", k} is the form factor of the 2)" face as seen from the 1) face,
F _{1) s, k} is the form factor viewed from the 1) plane of the sky,
F _{1) g, k} is the form factor viewed from the 1) surface of the ground surface,
It is.

Moreover, the glare source (blind entire surface) form factor is obtained by the following equation (12).

  Next, in step 4, the glare evaluation value determination unit 33 determines the glare evaluation value Y (ST4).

  The predicted glare index PGSV is a numerical value from −1 to 3.5, “0: Start to feel, 1: Start to be worried, 2: Start to feel uncomfortable, 3: Start to feel too bad”, Judge the glare.

  If the predicted glare index PGSV is greater than 1, proceed to step 5. When the predicted glare index PGSV is 1 or less, the process proceeds to step 7.

  In step 5, the blind angle correction unit 35 defines β = β + Δβ (ST5). Here, β is a blind angle of the slat 3 to be controlled, and Δβ is a blind angle change amount of the slat 3 to be controlled, and is preferably set to a resolution of the slat 3 or the like.

Next, in step 6, it is determined whether or not β ≧ β _max is satisfied (ST6). Where β _max is the maximum blind angle.

In step 6, if β ≧ _βmax is satisfied, there is a problem with the glare index even if the angle β of the blind 2 becomes the maximum value, and the angle β of the blind 2 is set to the maximum value _βmax and the process proceeds to step 7. In Step 6, when β ≧ _βmax is not satisfied, the process returns to Step 3.

  In step 7, the blind angle determining unit 34 determines the angle β of the blind 2 (ST7), and the control is terminated.

  Thus, according to the blind control device 30 of the present embodiment, the blind angle calculation unit 31 that calculates the control angle of the blind 2 from the state of the outdoor light and the angle of the blind 2, and the state of the outdoor light and the angle of the blind 2 A glare evaluation value calculation unit 32 that calculates a glare evaluation value from the above, a glare evaluation value determination unit 33 that determines whether the glare evaluation value is equal to or less than a predetermined glare threshold, and a glare evaluation value that is equal to or less than the glare threshold And a blind angle determination unit 34 that determines the blind angle as a control angle, so that it can be applied to general ready-made blinds and gradation blinds, and can use daylight while suppressing glare. It becomes.

  Further, when the glare evaluation value is larger than the glare threshold value, the blind angle correction unit 35 for obtaining a correction control angle obtained by adding or subtracting a predetermined correction angle with respect to the control angle is provided. Therefore, in order to suppress glare, the blind angle is accurately determined. It becomes possible to change.

  Further, when the correction control angle is smaller than a predetermined correction control threshold value that is determined in advance, the glare evaluation value calculation unit 32 calculates the glare evaluation value with the correction control angle, so that the glare can be further suppressed.

  When the correction control angle is larger than a predetermined correction control threshold value determined in advance, the blind angle determination unit 34 determines the blind angle as the control angle, so that the blind angle can be determined accurately. .

  According to the blind control system 1 according to the present invention, the blind 2 includes a plurality of slats 3, acquires an outdoor light state, and inputs the outdoor light state input unit 11 to the blind angle calculation unit 31. A plurality of slats 3 are detected in accordance with the control angles determined by the blind angle detector 12, the blind controller 30, and the blind angle determiner 34 that detect the angle of a predetermined slat among the slats and input it to the blind angle calculator 31. And the drive unit 61 that respectively changes the angles of the plurality of slats 3. Therefore, daylight can be used while suppressing glare.

 DESCRIPTION OF SYMBOLS 1 ... Blind control system, 2 ... Blind, 3 ... Slat, 11 ... Outdoor light state acquisition part, 12 ... Blind angle detection part, 30 ... Blind control apparatus, 31 ... Blind angle calculation part, 32 ... Glare evaluation value calculation part, 33 ... Glare evaluation value determination unit, 34 ... Blind angle determination unit, 35 ... Blind angle correction unit, 51 ... Window, 52 ... Ceiling, 53 ... Floor, 61 ... Blind drive unit (slat drive unit)

Claims (9)

A blind angle calculator for calculating a control angle of the blind from the angle of a blind,
A glare evaluation value calculation unit for calculating a glare evaluation value from the state of the outdoor light and the control angle of the blind;
A glare evaluation value determination unit that determines whether the glare evaluation value is equal to or less than a predetermined glare threshold value,
When the glare evaluation value is less than or equal to the glare threshold, a blind angle determination unit that determines the blind angle as the control angle;
A blind control device comprising: The blind control device according to claim 1, further comprising: a blind angle correction unit that obtains a correction control angle obtained by adding or subtracting a predetermined correction angle to the control angle when the glare evaluation value is larger than the glare threshold. . The blind control according to claim 2, wherein the glare evaluation value calculation unit calculates a glare evaluation value at the correction control angle when the correction control angle is smaller than a predetermined correction control threshold value. apparatus. The blind control according to claim 3, wherein when the correction control angle is larger than a predetermined correction control threshold value, the blind angle determination unit determines the blind angle as the control angle. apparatus. The blind has a plurality of slats;
An outdoor light state acquisition unit that acquires the state of outdoor light and inputs it to the blind angle calculation unit;
A blind angle detector that detects an angle of a predetermined slat among the plurality of slats and inputs the detected angle to the blind angle calculator;
A blind control device according to any one of claims 1 to 4,
A drive unit that drives the slats according to the control angle determined by the blind angle determination unit and changes the angles of the plurality of slats;
A blind control system comprising: Calculating a control angle of the blind from the angle of a blind,
Calculating a glare evaluation value from a state of the outdoor light and a control angle of the blind;
Determining whether the glare evaluation value is less than or equal to a predetermined glare threshold;
When the glare evaluation value is less than or equal to the glare threshold, controlling the angle of the blind to the control angle;
A blind control method comprising: The blind control method according to claim 6, further comprising a step of obtaining a correction control angle obtained by adding or subtracting a predetermined correction angle to the control angle when the glare evaluation value is larger than the glare threshold. The blind control method according to claim 7, further comprising a step of calculating a glare evaluation value at the correction control angle when the correction control angle is smaller than a predetermined correction control threshold value. The blind control method according to claim 8, further comprising a step of controlling the angle of the blind to the control angle when the correction control angle is larger than a predetermined correction control threshold value.

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