JP2022155944A - Illumination control system - Google Patents

Abstract

To provide a lighting control system capable of controlling a lighting fixture on the basis of melanopic illuminance.SOLUTION: A lighting control system 100 is for controlling lighting in a compartmented space in a building (house 1). The lighting control system 100 includes a lighting fixture 110 provided in the space and a control unit 130 for executing lighting control to control the lighting fixtures 110 so that the illuminance and color temperature of the space is the target illuminance and color temperature on the space by calculating the target color temperature for the space from the target illuminance and target melanopic illuminance set for the space.SELECTED DRAWING: Figure 1

Description

The present invention relates to lighting control system technology for controlling lighting fixtures.

2. Description of the Related Art Conventionally, lighting control system technology for controlling lighting fixtures depending on the situation is known. For example, it is as described in Patent Document 1.

In Patent Document 1, the operation (turning on and off) of a lighting fixture is controlled according to the situation of the user in the bedroom (for example, watching TV, reading, sleeping, etc.). A lighting control system is described. Such a lighting control system can provide an appropriate lighting environment according to the user's circadian rhythm in the bedroom.

Here, in recent years, melanopic illuminance has attracted attention as a new unit of light that affects circadian rhythms. It is known that melanopic illuminance affects the health of users (for example, quality of sleep). expected to be effective.

JP 2015-15159 A

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances described above, and a problem to be solved is to provide a lighting control system capable of controlling lighting fixtures in consideration of melanopic illuminance.

The problems to be solved by the present invention are as described above, and the means for solving the problems will now be described.

That is, in claim 1, there is provided a lighting control system for controlling lighting in a space partitioned in a building, comprising a lighting fixture provided in the space, and a target illuminance and a target melanopic illuminance set for the space. a control unit that calculates a target color temperature of the space, and performs lighting control that controls the lighting fixture so that the illuminance and color temperature of the space match the target illuminance and color temperature of the space; is provided.

In claim 2, the lighting fixture is provided in each of the plurality of spaces provided in the building, and the control unit, in the lighting control, controls the target illuminance and From the target melanopic illuminance, the target color temperature is calculated for each of the plurality of spaces, and the illuminance and color temperature of the plurality of spaces are the target illuminance and the target melanopic illuminance of the space. is to control

In claim 3, further comprising an illuminance detection unit capable of detecting the illuminance of the space and a color temperature detection unit capable of detecting the color temperature of the space, wherein the control unit, in the lighting control, The luminaire is controlled such that the illuminance of the space detected by the illuminance detector and the color temperature of the space detected by the color temperature detector become the target illuminance and the target color temperature. .

In claim 4, the target melanopic illuminance is set to a value capable of suppressing human awakening.

In claim 5, the target illuminance is set based on a value that does not interfere with daily activities in the space.

In claim 6, the control unit executes the lighting control at a time determined based on the bedtime of the user of the building.

As effects of the present invention, the following effects are obtained.

In claim 1, it is possible to control lighting fixtures in consideration of melanopic illuminance.

In claim 2, it is possible to control lighting fixtures in a plurality of spaces, taking melanopic illuminance into consideration.

In claim 3, illuminance and color temperature can be controlled more precisely.

In claim 4, the user's sleep quality can be improved.

In claim 5, it is possible to prevent interference with living activities while performing lighting control in consideration of the user's health.

In claim 6, lighting control can be performed at a timing that matches the bedtime of the user.

1 is a schematic diagram showing the configuration of a lighting control system according to an embodiment of the present invention; FIG. 4 is a flowchart showing details of lighting control; FIG. 4 is a diagram showing an example of reference illuminance, reference color temperature, and reference melanopic illuminance;

A lighting control system 100 according to an embodiment of the present invention will be described below with reference to FIG.

The lighting control system 100 controls the lighting of spaces (rooms) partitioned in a building. In this embodiment, a house 1 in which people live is assumed as an example of a building. FIG. 1 schematically shows a bedroom 2, a living room 3, a corridor 4, and a dining room 5 as an example of rooms in a house 1. FIG. The bedroom 2, the living room 3, the hallway 4, and the dining room 5 are partitioned by inner walls, and the lighting in the room can be individually controlled by lighting fixtures 110, which will be described later.

The lighting control system 100 mainly includes a lighting fixture 110, a sensor 120, a controller 130, and the like.

The lighting equipment 110 illuminates a space (room) such as the bedroom 2 with light. The lighting device 110 can adjust the light color, light intensity, light distribution, and the like of the light to be emitted. The lighting fixture 110 in this embodiment is configured to be able to adjust the illuminance and color temperature of light in a space (room) such as the bedroom 2 in particular. The lighting fixtures 110 are installed in the rooms whose lighting is to be controlled by the lighting control system 100 . FIG. 1 shows an example in which lighting fixtures 110 are provided on the ceilings of the bedroom 2, living room 3, corridor 4, and dining room 5, respectively.

Note that the adjustable range of the illuminance and color temperature of the lighting device 110 is determined by the performance of the lighting device 110 . Since it is assumed that the lighting fixture 110 of the present embodiment adjusts the color temperature as described later, it is desirable that the range in which the color temperature can be adjusted is as wide as possible. For example, in this embodiment, it is desirable to use lighting fixtures 110 that can adjust the color temperature in the range of at least 1800 to 12000 (K).

The sensor 120 detects information about light (illumination) in a space (room) such as the bedroom 2 . The sensor 120 in this embodiment is configured to detect illuminance and color temperature. The sensor 120 is provided in each room whose lighting is to be controlled by the lighting control system 100 . FIG. 1 shows an example in which sensors 120 are provided on the walls of each of a bedroom 2, a living room 3, a corridor 4, and a dining room 5. As shown in FIG. The sensor 120 is installed at a height of about 1200 mm from the floor so that the illuminance and color temperature in the room can be easily detected.

The control unit 130 is for controlling the lighting device 110 . The control unit 130 includes an arithmetic processing unit such as a CPU, a storage unit such as a RAM and a ROM, and the like. The storage unit of the control unit 130 stores in advance various information, programs, and the like used when controlling the operation of the lighting control system 100 (particularly, the lighting fixture 110). The arithmetic processing unit of the control unit 130 can control the operation of the lighting fixture 110 by executing the program and performing predetermined arithmetic processing using the various information. The control unit 130 is provided at an appropriate place inside the house 1 .

The control unit 130 includes an input unit (e.g., keyboard, mouse, touch panel, etc.) for inputting various information, and a display unit (e.g., liquid crystal monitor, LED lamp, touch panel, etc.) for displaying various information. may be

The control unit 130 is connected to the lighting equipment 110 provided in each room, and can control the operation of the lighting equipment 110 . In this embodiment, the control unit 130 can adjust the illuminance and color temperature of light in each room by controlling the light color, light amount, etc. of the lighting fixture 110 .

Also, the control unit 130 is connected to the sensor 120 provided in each room, and can acquire the detection result of the sensor 120 . Specifically, the controller 130 can acquire the actual illuminance and color temperature of the light in each room.

In the lighting control system 100 configured in this manner, the circadian rhythm of the residents of the house 1 can be adjusted by controlling the operation of the lighting fixtures 110 by the control unit 130 . Especially in this embodiment, it is possible to suppress awakening before sleep of the resident and encourage the resident to obtain high-quality sleep. The control (illumination control) for this will be specifically described below.

In step S<b>101 of FIG. 2 , the control unit 130 acquires the bedtime (scheduled bedtime) of the resident of the house 1 . As a method of acquiring the bedtime, for example, a method of calling up and acquiring the bedtime set (stored) in advance in the control unit 130, or acquiring a bedtime arbitrarily set by the resident using the input unit or the like. There is a way.

Note that if there are multiple residents in the house 1, the control unit 130 selects an arbitrary one of them and acquires the bedtime of that resident. The resident selection method includes a method of selecting one resident who is set (stored) as a target in the control unit 130 in advance, and a method of arbitrarily selecting a resident using the input unit or the like.

After acquiring the resident's bedtime, the control unit 130 proceeds to the process of step S102.

At step S102 in FIG. 2, the control unit 130 acquires the reference melanopic illuminance for each room. Here, the reference melanopic illuminance is a melanopic illuminance that serves as a target (reference) when controlling illumination. Also, melanopic illuminance is illuminance used as an index that affects the health of residents (for example, wakefulness, restful sleep, etc.).

As a method of acquiring the reference melanopic illuminance, for example, a method of calling and acquiring the value of the reference melanopic illuminance for each room that is set (stored) in the control unit 130 in advance, or a resident using the input unit or the like. There is a method of obtaining the reference melanopic illuminance for each room that is arbitrarily set. FIG. 3 shows an example of values of the reference melanopic illuminance set for each room in the house 1. As shown in FIG. In the present embodiment, from the viewpoint of suppressing wakefulness of the occupants before sleep, the reference melanopic illuminance is individually set to a low value that can be expected to suppress wakefulness of the occupants in each room. This value can be determined in advance by experiments or the like.

For example, in the living room 3 and the dining room 5, the reference melanopic illuminance is set to 10 (EML) because it is considered that the awakening of the residents can be suppressed by suppressing the melanopic illuminance to 10 (EML) or less. . In addition, in the living room 3 and the dining room 5, it is assumed that the residents will perform some daily activities (for example, talking with family members, watching TV, reading books, etc.) before going to bed. However, the value is set to the extent that daily activities are not extremely hindered.

Also, the reference melanopic illuminance of bedroom 2 is set to 1 (EML). Since it is considered that the frequency and duration of the above living activities are less in the bedroom 2 than in the living room 3, dining room 5, etc., the reference melanopic illuminance of the bedroom 2 is set to a lower value than in the living room 3, etc. As a result, in the bedroom 2, it is considered that the awakening of the occupants can be suppressed more effectively.

Also, the reference melanopic illuminance of the corridor 4 is set to 5 (EML). Compared to the living room 3, the dining room 5, etc., the frequency and time of the above-mentioned daily activities are considered to be less in the corridor 4, but the corridor 4 needs to secure a field of view for movement. Therefore, the reference melanopic illuminance of the corridor 4 is set to a value lower than that of the living room 3 and the like and higher than that of the bedroom 2 .

After obtaining the reference melanopic illuminance, the control unit 130 proceeds to the process of step S103.

In step S103 of FIG. 2, the control unit 130 obtains the reference illuminance for each room and calculates the reference color temperature for each room. Here, the reference illuminance is an illuminance that serves as a target (reference) when controlling illumination. The reference color temperature is a target (reference) color temperature for controlling lighting.

As a method of acquiring the reference illuminance, for example, a method of calling up and acquiring a reference illuminance value for each room that is set (stored) in the control unit 130 in advance, or a method of obtaining the reference illuminance value arbitrarily by the resident using the input unit or the like. There is a method of acquiring the set reference illuminance for each room. FIG. 3 shows an example of the reference illuminance values set for each room in the house 1 . In this embodiment, from the viewpoint of preventing troubles (malfunctions) in the living activities of each room while suppressing the awakening of the residents before sleep, the reference illuminance is set to The lowest possible value that does not cause any trouble is set individually.

This value can be determined, for example, based on the recommended illuminance based on the use of each room defined in JIS General Rules for Lighting (JIS Z 9110:2010). Specifically, it is possible to determine the reference illuminance of each room so as to achieve the lowest possible value while satisfying the recommended illuminance defined in the general rules of the JIS lighting standards.

For example, in this embodiment, with reference to the JIS lighting standard general rules, the reference illuminance of the bedroom 2, the living room 3, the corridor 4, and the dining room 5 are 50 (lx), 10 (lx), 20 (lx), and 40 (lx), respectively. lx).

As a method of calculating the reference color temperature, there is a method of calculating by substituting the reference melanopic illuminance and the reference illuminance set in steps S102 and S103 into the formula for calculating the melanopic illuminance. As the formula, for example, the following simplified formula (Formula 1) can be used.
(Number 1)
Melanopic illuminance = melanopic ratio x illuminance

Here, the melanopic ratio is calculated using the following formula (Equation 2).
(Number 2)
Melanopic ratio = ∫ {spectral distribution (λ) × standard relative luminosity (λ)} dλ / ∫ {spectral distribution (λ) × melanopsin sensitivity (λ)} dλ

Note that the range of the wavelength λ of light in the above formula is 380 to 780 (nm).
The spectral distribution is a value indicating how much light of which wavelength is included, and the spectral distribution changes according to the color temperature.
The standard spectral luminous efficiency is a standard sensitivity characteristic of the human eye (wavelength dependence of vision to light), that is, how humans perceive light, and is a fixed value.
The melanopsin sensitivity is a light sensitivity characteristic of an organ involved in human wakefulness, that is, how a person perceives wakeful light, and is a fixed value.

That is, if the spectral distribution is known, the reference color temperature can be calculated using Equations 1 and 2 above. Since the spectral distribution changes according to the color temperature, the spectral distribution for each color temperature should be grasped in advance. The spectral distribution can be grasped based on the information provided by the lighting equipment manufacturer.

Thus, based on the reference melanopic illuminance and the reference illuminance, the color temperature required to obtain the reference melanopic illuminance (reference color temperature) can be calculated. FIG. 3 shows an example of the reference color temperature values calculated for each room in the house 1 .

After obtaining and calculating the reference illuminance and the reference color temperature for each room, the control unit 130 proceeds to the process of step S104.

In step S104 of FIG. 2, the control unit 130 controls the lighting fixtures 110 in each room at the control start time determined based on the bedtime acquired in step S101. Here, the control start time is determined to be a time that is a predetermined time (for example, two hours) before the bedtime. For example, if the bedtime is 11:00, 9:00, two hours before that time, is determined as the control start time.

When the control start time comes, the control unit 130 sets the light intensity and the like of the lighting fixtures 110 provided in each room to a preset initial value (that is, the illuminance and color temperature of each room are set in advance). The lighting fixtures 110 in each room are controlled so that the default values are set). This initial value can be set to any value.

However, from the viewpoint of quickly completing this lighting control, initial values should be selected so that the illuminance and color temperature of each room are close to the reference illuminance and reference color temperature obtained and calculated in step S103. is desirable. In this case, by confirming in advance the relationship between the output value such as the light intensity of the lighting fixture 110 and the actual illuminance and color temperature of each room through experiments, etc. It is possible to control appropriately according to the situation.

After the control unit 130 controls the lighting fixture 110 so that the illuminance and color temperature of each room are set to the initial values, the process proceeds to step S105.

In step S<b>105 in FIG. 2 , the control unit 130 acquires the illuminance and color temperature of light in each room from the sensor 120 . After obtaining the illuminance and color temperature of each room, the control unit 130 proceeds to the process of step S106.

In step S106 of FIG. 2, the control unit 130 determines whether or not the illuminance of each room is equal to or lower than the reference illuminance acquired in step S103. If there is a room whose illuminance is higher than the reference illuminance, the control unit 130 proceeds to step S107. On the other hand, when the illuminance of each room is equal to or less than the reference illuminance, the controller 130 proceeds to step S108.

In step S107 of FIG. 2, the control unit 130 adjusts the output of the light amount of the lighting fixture 110 in the room where the illuminance is higher than the reference illuminance, and lowers the illuminance by a predetermined amount. After reducing the illuminance of the lighting device 110 by a predetermined amount, the control unit 130 proceeds to the process of step S105. The control unit 130 can reduce the illuminance of each room to below the reference illuminance by repeating the processing from step S105 to step S107. That is, in the present embodiment, the target value of illuminance (target illuminance) in lighting control is a value equal to or less than the reference illuminance.

On the other hand, in step S108 after shifting from step S106, the control unit 130 determines whether or not the color temperature of each room is lower than or equal to the reference color temperature calculated in step S103. If there is a room whose color temperature is higher than the reference color temperature, the control unit 130 proceeds to step S109. On the other hand, if the color temperature of each room is equal to or lower than the reference color temperature, control unit 130 ends the lighting control.

In step S109 of FIG. 2, the control unit 130 adjusts the light color of the lighting fixture 110 in the room whose color temperature is higher than the reference color temperature, and lowers the color temperature by a predetermined amount. After lowering the color temperature by a predetermined amount, the control unit 130 proceeds to the process of step S110.

In step S110 of FIG. 2, control unit 130 determines whether or not the color temperature of lighting fixture 110 whose color temperature has been adjusted in step S109 has reached the lower limit of the adjustable range. If the control unit 130 determines that the color temperature of the lighting fixture 110 has reached the lower limit value, it ends this lighting control. On the other hand, when the control unit 130 determines that the color temperature of the lighting device 110 has not yet reached the lower limit value, the process proceeds to step S105. By repeating the processing from step S108 to step S110, the control unit 130 can lower the illuminance of each room to the reference color temperature or lower, or to the lower limit value. That is, in the present embodiment, the target value of color temperature (target color temperature) in lighting control is a value equal to or lower than the reference color temperature or the lower limit value.

With the above lighting control, before the target resident goes to bed (for example, 2 hours before), the melanopic illuminance of each room is lowered (generally to the same value as the standard melanopic illuminance (see Fig. 3)). be able to. As a result, it is possible to prevent the occupants from waking up before going to bed and encourage them to obtain high-quality sleep.

In particular, in this embodiment, by adjusting the color temperature, it is possible to secure an illuminance that does not interfere with the living activities of the residents while reducing the melanopic illuminance. As a result, it is possible to suppress the awakening of the target resident while preventing the other residents living together with the target resident from being hindered in their daily activities. Furthermore, in this embodiment, by controlling the lighting for each room, it is possible to appropriately control the lighting in accordance with the daily activities in each room.

As described above, the lighting control system 100 according to the present embodiment
A lighting control system 100 that controls the lighting of a space partitioned in a building (house 1),
a lighting fixture 110 provided in the space;
A target color temperature of the space is calculated from the target illuminance and target melanopic illuminance set for the space, and the illuminance and color temperature of the space are the target illuminance and color temperature of the space, a control unit 130 that performs lighting control for controlling the lighting fixture 110;
is provided.

By configuring in this way, it becomes possible to control the lighting fixture 110 in consideration of the melanopic illuminance. Thereby, the lighting fixture 110 can be controlled in consideration of the user's (resident's) health (for example, quality of sleep).

Further, the lighting fixture 110 is
provided in each of the plurality of spaces provided in the building,
The control unit 130
In the lighting control, the target color temperature for each of the plurality of spaces is calculated from the target illuminance and the target melanopic illuminance set for each of the plurality of spaces, and the illuminance and color temperature of the plurality of spaces are calculated according to the The luminaire is controlled to achieve the target illuminance and the target melanopic illuminance of the space.

By configuring in this way, it is possible to control the lighting fixture 110 in consideration of the melanopic illuminance in a plurality of spaces. Thereby, even if the resident moves across a plurality of spaces (rooms), it is possible to obtain lighting that takes into consideration the user's health (for example, quality of sleep, etc.).

In addition, the lighting control system 100
A sensor 120 (illuminance detection unit) capable of detecting the illuminance of the space;
a sensor 120 (color temperature detection unit) capable of detecting the color temperature of the space;
further comprising
The control unit 130
In the lighting control, the lighting fixture is controlled such that the illuminance of the space detected by the sensor 120 and the color temperature of the space detected by the sensor 120 are equal to the target illuminance and the target color temperature. It is.

By configuring in this way, the illuminance and color temperature can be controlled more precisely. That is, since the operation of the lighting fixture 110 can be controlled (corrected) based on the actual measurement value obtained by the sensor 120, it is possible to perform precise control in consideration of the effects of the interior of the room and external light. As a result, it is possible to effectively control the lighting fixture 110 in consideration of the user's health.

Also, the target melanopic illuminance is
It is set to a value capable of suppressing human awakening.

By configuring in this way, it is possible to improve the quality of the user's sleep. That is, since it is possible to suppress the user's awakening, it is possible to improve the user's falling asleep and the depth of sleep.

Further, the target illuminance is
It is set on the basis of a value that does not interfere with daily activities in the space.

By configuring in this way, it is possible to prevent interference with daily activities while performing lighting control in consideration of the user's health.

Further, the control unit 130
The lighting control is executed at a time (control start time) determined based on the bedtime of the user of the building.

By configuring in this way, lighting control can be performed at a timing that matches the bedtime of the user. For example, by performing lighting control before the user goes to bed, the quality of the user's sleep can be improved.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, in the present embodiment, the house 1 is illustrated as a building to which the lighting control system 100 is applied, but the present invention is not limited to this, and various buildings (accommodation facilities, commercial facilities, etc.) in which lighting is provided. It is possible to apply

Also, the rooms (bedroom 2, living room 3, corridor 4, and dining room 5) exemplified in the present embodiment are examples, and the room in which the lighting fixture 110 is provided (the room in which the lighting is controlled) can be arbitrarily selected. . Also, in this embodiment, an example of controlling the operation of the lighting fixtures 110 in a plurality of rooms is shown, but it is also possible to control only the lighting fixtures 110 in one room (for example, bedroom 2).

Also, the values of the reference melanopic illuminance and the reference illuminance described in this embodiment can be arbitrarily changed by the user or the like. Also, the method for calculating the reference color temperature described in the present embodiment is an example, and any method can be used for calculation.

Further, in the present embodiment, an example (see step S104) of controlling the lighting fixtures 110 in each room at the control start time determined based on the bedtime acquired in step S101 was shown, but the present invention is limited to this. It is possible to control the luminaire 110 at arbitrary timing rather than at the time. For example, it is also possible to start control of the lighting fixture 110 triggered by a predetermined operation by the resident.

Further, in this embodiment, control is performed so that the illuminance and the color temperature are equal to or lower than the reference values (see steps S106 to S109). That is, in the present embodiment, control is performed so that the illuminance and color temperature are equal to or lower than the upper limit values (reference values), but the present invention is not limited to this. For example, it is possible to provide not only upper limits (reference values) but also lower limits to the illuminance and color temperature, and perform control within a range in which the illuminance and color temperature are equal to or lower than the reference values and equal to or higher than the lower limits. By configuring in this way, it is possible to prevent the illuminance and color temperature from being excessively lowered and hindering daily activities.

Also, in the present embodiment, an example in which the reference illuminance is set based on the general rules of the JIS lighting standards has been shown, but the method for determining the reference illuminance is not limited to this. For example, the reference illuminance can be set to any value.

Further, in the present embodiment, an example of using the above equations 1 and 2 as a method of calculating the reference color temperature has been shown, but the method of calculating the reference color temperature is not limited to this. For example, the reference color temperature can also be calculated using other formulas (for example, appropriately set approximation formulas, etc.).

1 House 100 Lighting Control System 110 Lighting Apparatus 120 Sensor 130 Control Unit

Claims (6)

A lighting control system for controlling lighting in a space partitioned in a building,
a lighting fixture provided in the space;
A target color temperature of the space is calculated from the target illuminance and target melanopic illuminance set for the space, and the illuminance and color temperature of the space are the target illuminance and color temperature of the space, a control unit that performs lighting control for controlling the lighting fixture;
A lighting control system comprising: The lighting fixture is
provided in each of the plurality of spaces provided in the building,
The control unit
In the lighting control, the target color temperature for each of the plurality of spaces is calculated from the target illuminance and the target melanopic illuminance set for each of the plurality of spaces, and the illuminance and color temperature of the plurality of spaces are calculated according to the controlling the luminaire to achieve the target illuminance and the target melanopic illuminance of a space;
A lighting control system according to claim 1 . an illuminance detection unit capable of detecting the illuminance of the space;
a color temperature detection unit capable of detecting the color temperature of the space;
further comprising
The control unit
In the lighting control, the illuminance of the space detected by the illuminance detection unit and the color temperature of the space detected by the color temperature detection unit are equal to the target illuminance and the target color temperature. to control the
The lighting control system according to claim 1 or 2. The target melanopic illuminance is
set to a value that can suppress human awakening,
4. A lighting control system according to any one of claims 1-3. The target illuminance is
It is set based on a value that does not interfere with daily activities in the space,
5. A lighting control system according to any one of claims 1-4. The control unit
executing the lighting control at a time determined based on the bedtime of the user of the building;
6. A lighting control system according to any one of claims 1-5.

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