JP2014047477A - Blind control system and blind control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a blind control system capable of establishing compatibility between amenity of a visual environment avoiding an unpleasant glare feeling of a person sitting on his/her seat, and energy saving achieved by daylight utilization or a reduction in air conditioning load and securement of view.SOLUTION: A control system for a blind of an office includes: the plurality of blinds (1) that are provided along a window surface (11) of the office (10); a detection unit (2) that detects a position of a person sitting on the his/her seat, in a plurality of zones (12a, 12b and 12c) obtained by virtually dividing an office space depending on the arrangement of the plurality of blinds, on a zone-by-zone basis; and a control unit (3) that controls the plurality of blinds on the zone-by-zone basis, on the basis of the result of detection performed by the detection unit.

Description

  The present invention relates to a blind control system and a blind control method. More particularly, the present invention relates to blind control in a building provided with a plurality of blinds, for example, along a window surface.

  Blinds used in buildings for the purpose of blocking the direct sunlight and improving the indoor thermal environment have traditionally been manually adjusted by people in the room. A built-in, automatic adjustment with a motor is adopted.

  Blind control includes a program that only has a function to block direct light based on the position information of the sun, and a program that evaluates the glare feeling for one seat in the room and reflects this glare feeling in the control. Etc. are used. In the control considering the feeling of glare, the feeling of glare of the occupant due to the reflection of the direct light at the slats is taken into consideration, and it becomes easier to close than when the sun's direct light is simply shielded.

  In recent years, when there is no hindrance such as in cloudy weather, research on control that satisfies the demands of the view and open feeling of the seated person by raising the blinds and adjusting the slat angle to a horizontal angle is conducted. Has been done.

  In both cases, all blinds on the floor are evaluated from the viewpoint of glare feeling, that is, the feeling of glare for the seat on the danger side, that is, the seat closest to the blind, and control based on this evaluation is performed. There are many. Further, when blinds are installed on a plurality of window surfaces having different directions in one room having a large area, an example of changing the blind control for each direction of the window surface can be seen.

  In the conventional automatic blind control, the position of the occupant is not taken into consideration.When glare control is performed by contrasting the brightness between the blind surface and the background, even if there is no occupant on the window side, the position is closest to the window. In many cases, blinds were controlled on the assumption that there was a seated person (that is, assuming the safest side). As a result, the comfort of the visual environment is ensured by avoiding the uncomfortable glare of the occupants, but the view of the occupants away from the window is sacrificed and sufficient energy saving is achieved through daylight use. I couldn't plan.

  Further, in a room having a relatively large area, although there is an example in which different control is performed for each direction of the window surface on which the blind is installed, uniform control is performed for the blind in the same direction. In a room with a relatively large area, there is a distribution of seats, so even if the direction of the blind is the same, the optimal control should be different for each position relative to the blind, and there was room for improvement.

  The present invention has been made in view of the above-mentioned problems. The comfort of the visual environment that avoids the unpleasant glare of the occupants and the securing of energy saving and view by reducing the use of daylight or air conditioning load. It is an object of the present invention to provide a blind control system and a blind control method that can be compatible with the above.

In order to solve the above-described problem, according to a first aspect of the present invention, there is provided a blind control system in an office,
A plurality of blinds provided along the window of the office;
A detection unit that detects positions of occupants in each of a plurality of zones obtained by virtually dividing the office space according to the arrangement of the plurality of blinds;
A blind control system comprising: a control unit that controls the plurality of blinds for each zone based on a detection result of the detection unit.

In a second embodiment of the present invention, a blind control method in an office,
Virtually dividing the office space according to the arrangement of a plurality of blinds provided along the window of the office;
Detecting the position of the occupant in each of a plurality of zones obtained by virtually dividing the office space;
There is provided a blind control method including controlling the plurality of blinds for each zone based on the position information of the occupant detected for each zone.

  In the present invention, the office space is virtually divided into a plurality of zones in accordance with the arrangement of the plurality of blinds provided along the window surface of the office, and the position of the occupant is detected for each zone. Then, the plurality of blinds are controlled for each zone based on the position information of the seated person for each zone. As a result, it is possible to achieve both the comfort of the visual environment that avoids the unpleasant glare of the occupant and the saving of energy and the securing of the view by reducing daylight use or air conditioning load.

It is a figure showing roughly the composition of the blind control system concerning the embodiment of the present invention. It is a figure which shows roughly an example of the flowchart of the blind control method concerning this embodiment.

  Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a diagram schematically showing a configuration of a blind control system according to an embodiment of the present invention. In the present embodiment, the present invention is applied to automatic control of a plurality of blinds provided along an office window surface. In the present invention, “office” broadly refers to a room having a relatively large area including an area for seated persons.

  Referring to FIG. 1, for example, a plurality of blinds 1 are provided along a window surface 11 of an office 10 having a rectangular floor. The space of the office 10 is virtually divided into a plurality of zones according to the arrangement of the plurality of blinds 1. Hereinafter, as a relatively simple example for facilitating the understanding of the description, twelve blinds 1 are provided along the window surface 11 on the south side of the office 10, and the space of the office 10 extends in the vertical direction in the figure. It is assumed that it is virtually divided into three by a linear broken line.

  That is, four blinds 1 belong to the three zones 12a, 12b, and 12c obtained by virtually dividing the space of the office 10 into three. The blind control system according to the present embodiment includes the above-described twelve blinds 1, a detection unit 2 that detects the positions of occupants in the three zones 12a to 12c for each zone, and detection results of the detection unit 2 (that is, the zones). The control unit 3 that controls the plurality of blinds 1 for each zone based on the position information of the occupants detected every time, and the illuminance that is installed on the rooftop of the office 10 and measures the illuminance of sunlight and skylight, for example. 4 in total.

  The detection unit 2 includes, for example, a plurality of human sensors that are provided on the ceiling surface of the office 10 and detect the location of a person in a predetermined floor range. Alternatively, as the detection unit 2, a medium such as an RFID carried by an occupant or a sensor for detecting a mobile phone can be used. The detection unit 2 detects the position of the occupant in each of the zones 12a to 12c, and consequently also detects the presence or absence of the occupant for each zone. The control unit 3 grasps information related to the date, time, and the like by the action of the built-in clock, for example.

  In the present embodiment, as shown in the flowchart of FIG. 2, the office space is virtually divided into a plurality of zones according to the arrangement of the plurality of blinds (S01). Specifically, in step S01, as described above, since twelve blinds 1 are provided along the window surface 11 on the south side of the office 10, the space of the office 10 is virtually divided into three zones 12a to 12c. Divide into As a result, four blinds 1 belong to each of the zones 12a to 12c.

  Next, in the present embodiment, the positions of occupants in a plurality of zones are detected for each zone (S02). Specifically, in step S02, for example, the detection unit 2 having a plurality of human sensors detects the position of the occupant in the three zones 12a to 12c (and whether or not the occupant is present) for each zone. The detection result of the detection unit 2 (that is, the position information of the occupant detected for each zone) is supplied to the control unit 3.

  Next, in the present embodiment, a glare index is obtained for the occupant closest to the blind in each zone where the occupant is detected (S03). Specifically, in step S03, for example, when one or more occupants are detected in the zone 12a, an index of glare is obtained for the occupant closest to the blind 1. The same applies to the other zones 12b and 12c.

As an example, the index PGSV (discomfort glare index) of the dazzling feeling is calculated by the following equation (1). In Expression (1), Ls is an average value of luminance in the blind region, that is, light source luminance (cd / m ² ), and Lb is an average value of luminance in background regions (wall surface, ceiling surface, etc.) other than the blind region, that is, background luminance. (Cd / m ² ), and ω is the solid angle at which the occupant who is the evaluation target looks at the blind region, that is, the light source solid angle (sr).

  Referring to Equation (1), when the conditions of Ls and Lb are the same, the light source solid angle ω increases as the position of the occupant who is the evaluation target approaches the blind 1, and the glare index PGSV is also determined. growing. On the other hand, as the position of the occupant who is the evaluation subject moves away from the blind 1, the light source solid angle ω decreases and the glare index PGSV also decreases.

  This means that when there are people in the vicinity of the blind 1, the slats of the blind 1 are closed and the light source luminance Ls is reduced to some extent, thereby suppressing the glare and ensuring the comfort of the visual environment. It means you can do that. In addition, when there are only people away from the blind 1, even if the slat of the blind 1 is opened and the light source luminance Ls is increased to some extent, an unpleasant glare can be avoided. Yes.

  Incidentally, the light source luminance Ls is calculated based on the position of the sun, the illuminance of sunlight and skylight, the direction of the window surface 11 on which the blind 1 is provided, and the like. The position of the sun is obtained from time to time based on information related to the date, time, etc. built in the control unit 3. The illuminance of sunlight and skylight is obtained as needed based on the measurement result of the illuminometer 4 supplied to the control unit 3. The direction of the window surface 11 of the blind 1 is invariable and known to the control unit 3. The background luminance Lb depends on the space characteristics of the office 10.

  Thus, in the present embodiment, a plurality of blinds are set for each zone based on the detection result of the detection unit (that is, the position information of the occupant detected for each zone) and the index of the dazzling feeling obtained for each zone. Control (S04). Specifically, in step S04, for example, the value of the glare index PGSV obtained for the occupant closest to the blind 1 in the zone 12a is referred to, and this is uncomfortable for the occupant as the evaluation target. The slat angles of the four blinds 1 belonging to the zone 12a are adjusted so that the feeling of glare is avoided. The same applies to the other zones 12b and 12c.

  For example, when there is a seated person near the blind 1 in the zone 12a, the slat of the blind 1 is adjusted to be closed, and it is not possible to secure a view and save energy by using daylight, but unpleasant glare. A feeling can be avoided. On the other hand, when there are only occupants away from the blind 1, the slats of the blind 1 are adjusted to open, avoiding an unpleasant glare, and ensuring the view and saving energy by using daylight. Can do.

  By the way, when there is a zone where no occupant is detected, the blind of the zone is set to fully closed or fully opened (S05). Specifically, in step S05, the air conditioning load can be reduced, for example, by setting the blind in a zone where no occupant is detected in the summer to be fully closed. On the other hand, in situations where setting the blinds fully closed does not contribute significantly to reducing the air-conditioning load, setting the blinds fully open (setting the blind slats horizontally) allows people in the next zone to be seated. Can be secured, and energy can be saved by using daylight (lighting energy can be reduced by using daylight). In either case, in a zone where no occupant is detected, it is not necessary to adjust the blind slat angle.

  In this embodiment, after controlling a plurality of blinds for each zone in step S04, or after setting the blinds to fully closed or fully opened in step S05, the process returns to step S02. In step S02, the positions of occupants in a plurality of zones are detected again for each zone, and the process proceeds to step S03 or step S04 as necessary. In this way, the procedure for shifting from step S02 to step S04 through step S03, or the procedure for shifting from step S02 to step S05 is repeated.

  As described above, in the present embodiment, the space of the office 10 is virtually divided into a plurality of zones according to the arrangement of the plurality of blinds 1 provided along the window surface 11 of the office 10, and the detection unit 2. The position of the occupant is detected for each zone. And the control part 3 controls the some blind 1 for every zone based on the detection result of the detection part 2, ie, the position information of the seated person for every zone. As a result, in this embodiment, it is possible to achieve both comfort in the visual environment that avoids an unpleasant glare of the occupant and energy saving and securing of the view by reducing daylight use or air conditioning load.

  As described above, in this embodiment, the position information of the occupant is incorporated into the blind automatic control program, and the presence / absence and position of the occupant are reflected in the blind control, thereby making a trade-off between the visual environment and energy saving. Has solved. Various indexes other than PGSV (unpleasant glare index) have been proposed as an index of glare, but in the formula for calculating the index of glare, the distance from the blind surface to the occupant and the occupant You may consider the direction and the influence of the partition.

  This embodiment is based on the idea that, in a room with a relatively large area, even if the blinds are installed in the same direction, the optimal control should be different depending on the position of the occupant and the presence or absence of the occupant. Is based. In other words, the present embodiment is based on the idea that by dividing a room and a blind into a plurality of zones, an optimum blind control can be performed for each part even in one room space.

DESCRIPTION OF SYMBOLS 1 Blind 2 Detection part 3 Control part 4 Illuminance meter 10 Office 11 Window surface 12a, 12b, 12c Zone

Claims (8)

A blind control system in an office,
A plurality of blinds provided along the window of the office;
A detection unit that detects positions of occupants in each of a plurality of zones obtained by virtually dividing the office space according to the arrangement of the plurality of blinds;
A blind control system comprising: a control unit that controls the plurality of blinds for each zone based on a detection result of the detection unit. The control unit adjusts an angle of a slat of a blind belonging to the zone based on an index of a dazzling feeling obtained for a seated person closest to the blind in each zone. The blind control system according to 1. It further includes an illuminometer that measures the illuminance of sunlight and skylight,
The blind control system according to claim 2, wherein the control unit obtains an index of the dazzle feeling based on a direction of the window surface, a position of the sun, and a measurement result of the illuminometer. The blind control system according to claim 1, wherein the control unit sets a blind belonging to a zone in which no occupant is present to be fully closed or fully open. The detection unit includes at least one of a plurality of human sensors for detecting a person's location in a predetermined floor range, and a sensor for detecting an RFID medium or a phone carried by a person present. The blind control system according to any one of claims 1 to 4. A method for controlling blinds in an office,
Virtually dividing the office space according to the arrangement of a plurality of blinds provided along the window of the office;
Detecting the position of the occupant in each of a plurality of zones obtained by virtually dividing the office space;
Controlling the plurality of blinds for each zone based on the position information of the occupants detected for each zone. The control includes obtaining a glare index for a person who is closest to the blind in each zone, and the angle of the blind slats belonging to the zone based on the glare index obtained. The blind control method according to claim 6, further comprising adjusting The blind control method according to claim 6, wherein the controlling includes setting a blind belonging to a zone where there is no attendant to be fully closed or fully opened.

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