JP2018181613A - Creation method of lighting control table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To create a lighting control table which allows for such lighting control that desired brightness feeling is obtained in a space having a window capable of introducing daylight.SOLUTION: A creation method of a lighting control table includes a daylight introduction amount setting step S1 of setting a set daylight introduction amount, a target index value setting step S2 of setting a target brightness index value, a pattern candidate setting step S3 for setting multiple control value pattern candidates, i.e., the candidates of control value pattern, an index value acquisition step S4 of acquiring the brightness feeling index value of the space when the daylight of the set daylight introduction amount is introduced and a luminaire group is subjected to lighting control in the control value pattern candidate, and a pattern selection step S5 of selecting a control value pattern corresponding to the set daylight introduction amount from the multiple control value pattern candidates, based on the brightness feeling index value and the target brightness feeling index value.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a method of creating a lighting control table used for lighting control of a plurality of lighting fixtures provided in a space having a window capable of introducing daylight.

  Patent Document 1 describes a lighting device including a plurality of lighting fixtures. In the lighting device described in Patent Document 1, first, a plurality of lighting fixtures are dimmed, and the detection value of the brightness sensor when a predetermined brightness is obtained is stored. Thereafter, feedback control of the plurality of lighting devices is performed so that the detection value of the brightness sensor is maintained at the stored brightness target value.

JP 2001-176676 A

  However, in the lighting device described in Patent Document 1, there is a problem that the lighting control of the plurality of lighting devices becomes complicated in order to feedback control the plurality of lighting devices. Then, it is possible to prepare beforehand the lighting control table which recorded the control value of several lighting fixtures.

  By the way, in the space which has a window part which can introduce daylight, the brightness feeling of space changes greatly with the amount of daylight introduction from a window part. In the present specification, the "feeling of brightness in space" is also simply referred to as the "feeling of brightness." A sense of brightness is an impression of brightness felt from the whole space, that is, a human sense amount. In addition, the sense of brightness also changes depending on the lighting fixture to be lighted and the light control rate thereof. On the other hand, the sense of brightness can not be measured directly by a sensor or the like.

  Then, an object of this invention is to provide the preparation method of the illumination control table for enabling the lighting control in which the desired brightness feeling is obtained in the space which has a window part which can introduce daylight.

  A method of creating a lighting control table according to the present invention includes a plurality of lighting fixture groups provided in a space having a window part capable of introducing daylight, a daylight introduction amount from the window part, and a control value pattern of the lighting fixture group A lighting control used in a lighting system comprising: a lighting control table in which the lighting control table is associated in advance, and a lighting control unit performing lighting control of a lighting fixture group based on a daylight introduction amount from the window unit with reference to the lighting control table It is a creation method of the illumination control table which creates a table, Comprising: The daylight introduction amount setting step which sets the setting daylight introduction amount which is a setting value of the daylight introduction amount, Control value pattern candidate which is a candidate of a control value pattern The control value pattern candidate set in the pattern candidate setting step when the daylight of the set daylight introduction amount set in the pattern candidate setting step of setting a plurality of parameters and the daylight amount setting step is introduced Comprising in the case of the luminaire groups were lighting control, and the index value acquisition step of acquiring the brightness feeling index value space, a.

  In the lighting control table creation method according to the present invention, a plurality of control value pattern candidates are set, and lighting control of the lighting fixture group is performed using the control value pattern candidates when daylight of the set daylight introduction amount is introduced. Acquire the brightness index value of the space. Therefore, it is possible to create a lighting control table in which the daylight introduction amount and the control value pattern are associated with each other based on the brightness feeling index value. For this reason, by performing lighting control with reference to the created lighting control table, the plurality of lighting fixture groups can be easily lighted so that a desired sense of brightness can be obtained according to the amount of daylight introduced from the window. Can be controlled. When creating the illumination control table, all control value pattern candidates may be selected as control value patterns corresponding to the set daylight introduction amount, and only some of the control value pattern candidates may be set daylight It may be selected as a control value pattern corresponding to the introduction amount.

  A pattern for selecting a control value pattern of the illumination control table corresponding to the set daylight introduction amount from the plurality of control value pattern candidates set in the pattern candidate setting step based on the brightness index value acquired in the index value acquisition step It may further comprise a selection step. In the method of creating the illumination control table, since the control value pattern of the illumination control table corresponding to the set daylight introduction amount is selected from a plurality of control value pattern candidates based on the brightness sensation index value, the brightness sensation index value is selected. It is possible to create a lighting control table in which the daylight introduction amount and the control value pattern are associated with each other.

  In the pattern selection step, one control value pattern may be selected corresponding to one set daylighting introduction amount. In the method of creating the illumination control table, it is possible to create an illumination control table in which the daylight introduction amount and the control value pattern are associated with each other in one-to-one manner. For this reason, by referring to the created illumination control table, the control value pattern is inevitably determined in accordance with the daylight introduction amount, so that the lighting control of the illumination device group can be easily performed.

  In the pattern selection step, a plurality of control value patterns may be selected corresponding to one set daylight introduction amount. In this method of creating a lighting control table, it is possible to create a lighting control table in which a plurality of control value patterns are associated with one daylight introduction amount. For this reason, by referring to the created lighting control table, the degree of freedom of lighting control becomes high, so it is possible to perform detailed lighting control according to the situation.

  The method further comprises a target brightness feeling setting step of setting a target brightness feeling index value of the space corresponding to the set daylight introduction amount, and in the pattern selection step, the brightness feeling index value and target index value acquired in the index value acquiring step A control value pattern corresponding to the set daylight introduction amount may be selected based on the target brightness feeling index value set in the setting step. In the method of creating the illumination control table, in order to select the control value pattern corresponding to the set daylight introduction amount based on the brightness feeling index value and the target brightness feeling index value, it is possible to appropriately select the control value pattern it can.

  In the pattern selection step, a control value pattern corresponding to the set daylighting introduction amount may be selected from among control value pattern candidates for which the brightness sensation index value is equal to or higher than the target brightness sensation index value. In the method of creating the illumination control table, the illumination created in order to select a control value pattern corresponding to the set daylight introduction amount from among control value pattern candidates for which the brightness sensation index value is equal to or higher than the target brightness sensation index value. By performing lighting control with reference to the control table, lighting control of a plurality of lighting fixture groups can be performed so as to obtain a sufficient sense of brightness in a space having a window capable of introducing daylight.

  The method further includes a power consumption acquisition step of acquiring power consumption when lighting control is performed on the luminaire group with the control value pattern candidate, and the pattern selection step includes a brightness feeling index value and target index value setting step acquired in the index value acquisition step. A control value pattern corresponding to the set daylighting introduction amount may be selected based on the power consumption acquired in the power consumption acquisition step, in addition to the target brightness feeling index value set in. In this lighting control table creation method, in order to select the control value pattern corresponding to the set daylight introduction amount based on the power consumption, the lighting control is performed with reference to the created lighting control table, so that a plurality of lighting fixtures are controlled. Power consumption of the group can be reduced.

  In the pattern selection step, a control value pattern corresponding to the set daylight introduction amount is selected from control value pattern candidates whose brightness feeling index value is equal to or higher than the target brightness feeling index value and power consumption is less than the set power consumption. You may In the method of creating the illumination control table, among the control value pattern candidates whose brightness feeling index value is equal to or higher than the target brightness feeling index value and whose power consumption is less than the set power consumption, a control value corresponding to the set daylight introduction amount In order to select a pattern, the lighting control is performed with reference to the created lighting control table to control lighting of a plurality of lighting fixture groups so that an increase in power consumption is suppressed and sufficient brightness can be obtained. it can.

  In the pattern selection step, a control value pattern candidate having the brightness feeling index value equal to or more than the target brightness feeling index value and the smallest power consumption may be selected as a control value pattern corresponding to the set daylight introduction amount. In this method of creating the illumination control table, a control value pattern candidate having the brightness feeling index value equal to or higher than the target brightness feeling index value and the smallest power consumption is selected as the control value pattern corresponding to the set daylight introduction amount. By performing lighting control with reference to the created lighting control table, lighting control of a plurality of lighting fixture groups can be performed so that an increase in power consumption can be suppressed and a sufficient sense of brightness can be obtained.

  In the pattern selection step, a control value pattern corresponding to the set daylighting introduction amount may be selected based on the ratio of the brightness feeling index value to the power consumption. In this lighting control table creating method, lighting control is performed with reference to the created lighting control table in order to select a control value pattern corresponding to the set daylight introduction amount based on the ratio of the brightness feeling index value to the power consumption. Thus, lighting control of the plurality of lighting fixture groups can be performed so that an increase in power consumption can be suppressed and a sufficient sense of brightness can be obtained.

  The method further comprises a priority assignment step of prioritizing the plurality of control value pattern candidates set in the pattern candidate setting step, and in the pattern selection step, the brightness feeling index values in descending order of priority assigned in the priority assignment step. And the target brightness feeling index value are compared, and the control value pattern candidate in which the brightness feeling index value is equal to or higher than the target brightness feeling index value is first set as a control value pattern corresponding to the set amount of introduced daylight. You may choose. In this method of creating the illumination control table, the brightness feeling index value and the target brightness feeling index value are compared in the order of high priority, and first, the brightness feeling index value is equal to or higher than the target brightness feeling index value. In order to select the control value pattern candidate that has become a control value pattern corresponding to the set daylight introduction amount, create the illumination control table without necessarily obtaining the brightness feeling index value for all the control value pattern candidates. Can. Therefore, the illumination control table can be created efficiently.

  In the priority assignment step, the priority may be set higher as the ratio of the brightness feeling index value to the power consumption is larger. In this method of creating a lighting control table, a control value pattern that provides sufficient feeling of brightness can be obtained by suppressing an increase in power consumption by setting the priority higher as the ratio of the brightness feeling index value to the power consumption increases. It can be selected.

  In the index value acquisition step, the brightness index value may be acquired for all control value pattern candidates set in the pattern candidate setting step. In the method of creating the illumination control table, since the brightness index value is acquired for all control value pattern candidates, a more optimal control value pattern can be selected.

  In the pattern candidate setting step, the upper limit of the control value of the luminaire group, the lower limit of the control value of the luminaire group, and the upper limit of the difference of the control value between the luminaire groups are set, and a plurality of controls are performed under this set condition. Value pattern candidates may be set. In this method of creating a lighting control table, as the setting conditions of the plurality of control value pattern candidates, the upper limit of the control value of the lighting group, the lower limit of the control value of the lighting group, and the difference of the control value among the lighting groups By setting the upper limit, it is possible to limit the setting so as not to set an excessively uneven illumination pattern. Also, this can suppress the number of control value pattern candidates to be set from becoming excessive.

  In the index value acquisition step, the average brightness of the control value pattern candidate, the AD value, which is the amount of brightness contrast where the spatial cycle of light and dark to reduce the feeling of brightness is long, and the spatial cycle of light and dark to improve the feeling of brightness The brightness value index value of the control value pattern candidate may be calculated from the obtained average brightness, the AD value, and the CD value by acquiring the CD value which is the amount of the brightness comparison with a short value. In the method of creating the illumination control table, the brightness index value can be calculated with high accuracy by calculating the brightness index value from the average brightness, the AD value, and the CD value.

  In the index value acquisition step, the average luminance, the AD value, and the CD value may be calculated from the luminance distribution image. In the method of creating the illumination control table, the average brightness, the AD value, and the CD value can be calculated with high accuracy by calculating the average brightness, the AD value, and the CD value from the brightness distribution image.

  In the index value acquisition step, the average luminance may be obtained from the measurement values of the luminance meter array configured by an average luminance meter, an illuminance meter, or a plurality of luminance meters. In the method of creating the illumination control table, the average luminance can be quickly obtained by obtaining the average luminance from the measurement values of the average luminance meter, the illuminance meter, or the luminance meter array.

  In the index value acquisition step, the AD value may be obtained from the measurement value of the luminometer array formed of a plurality of luminometers or the luminance meter array formed of a plurality of luminance meters. In the method of creating the illumination control table, the AD value can be obtained quickly by obtaining the AD value from the measurement values of the illuminance meter array or the luminance meter array.

  In the index value acquisition step, the CD value may be obtained from the measurement values of the luminance meter array configured by a plurality of luminance meters. In the method of creating the illumination control table, the CD value can be obtained quickly by obtaining the CD value from the measurement values of the luminance meter array.

  According to the present invention, it is possible to create a lighting control table for enabling lighting control to obtain a desired sense of brightness in a space having a window part capable of introducing daylight.

It is a schematic diagram which shows the illumination system provided in the space which has a window part which can introduce daylight. It is a flowchart which shows the lighting control method by the lighting control part of a lighting system. It is a table showing an example of a lighting control table. It is a table showing an example of a lighting control table. It is a table showing an example of a lighting control table. It is a flowchart which shows the creation method of the illumination control table of 1st embodiment. It is a table showing an example of a plurality of control value pattern candidates corresponding to the set daylight introduction amount. It is a figure which shows an example of a reference luminance distribution image. It is a figure which shows an example of unit daylight introduction amount brightness distribution image. It is a figure which shows an example of a unit light control rate brightness | luminance distribution image. It is a figure which shows an example of a unit light control rate brightness | luminance distribution image. It is a figure which shows an example of a unit light control rate brightness | luminance distribution image. It is a figure which shows an example of a unit light control rate brightness | luminance distribution image. It is a figure which shows an example of a unit light control rate brightness | luminance distribution image. It is a flowchart which shows the creation method of the illumination control table of 2nd embodiment. It is a table which shows an example of the priority of a control value pattern candidate. It is a table which shows an example of the priority of a control value pattern candidate. It is a flowchart which shows the creation method of the illumination control table of 3rd embodiment. It is a table showing an example of a plurality of control value pattern candidates corresponding to the set daylight introduction amount. It is a flowchart which shows the creation method of the illumination control table of 4th embodiment.

  Hereinafter, with reference to the drawings, a preferred embodiment of a method of creating a lighting control table according to the present invention will be described in detail. In all the drawings, the same or corresponding parts are denoted by the same reference numerals.

[Lighting system]
First, a lighting system in which a lighting control table is used will be described.

  As shown in FIG. 1, the lighting system 1 includes a plurality of lighting fixture groups 2 (2 a, 2 b, 2 c), a switch 3, a daylight introduction amount detection device 4, a lighting control table 5, and a lighting control unit 6. And.

  The plurality of lighting fixture groups 2 are provided in a space S having a window part 11 capable of introducing daylight. The space S is, for example, a work space such as an office, and a plurality of desks 12 and chairs 13 are disposed in the space S. The shape, size, and the like of the space S are not particularly limited. Further, the number and arrangement of the desks 12 and the chairs 13 are not particularly limited. Although the window part 11 is formed in the wall surface of the space S, it may be formed in the top surface of the space S, a floor surface, etc. The size, number, and the like of the windows 11 are not particularly limited. In the drawing, one window 11 is formed in the wall of the space S, and a blind 14 is attached to the window 11.

  The lighting fixture group 2 is configured of one or more lighting fixtures whose lighting control is performed collectively. A plurality of the lighting fixture groups 2 are provided in the space S. The lighting fixture group 2 functions as artificial lighting of the space S. On the other hand, daylight introduced into the space S from the window portion 11 functions as natural illumination of the space S. As the lighting fixture group 2, for example, ceiling lighting, wall indirect lighting, window surface light-up lighting and the like are used. The number of lighting fixture groups 2 is not particularly limited as long as it is plural. In the drawing, three lighting fixture groups 2 including the lighting fixture group 2a, the lighting fixture group 2b, and the lighting fixture group 2c are provided.

  The switch 3 is provided corresponding to the luminaire group 2. That is, one switch 3 is provided corresponding to one lighting fixture group 2. In the drawing, three switches 3 of a switch 3a, a switch 3b and a switch 3c are provided, and the switches 3a to 3c are respectively associated with the lighting fixture groups 2a to 2c. The switch 3 performs lighting (dimming) and extinguishing of the corresponding lighting device group 2 based on the control of the lighting control unit 6. That is, the switch 3 lights up the corresponding lighting fixture group 2 at a predetermined dimming rate based on the control of the lighting control unit 6. Also, the switch 3 turns off the corresponding lighting fixture group 2 based on the control of the lighting control unit 6.

  The daylight introduction amount detection device 4 detects a daylight introduction amount. The daylight introduction amount is the introduction amount of daylight which is introduced from the window portion 11 and is introduced into the space S through the light reduction by the blind 14. The daylight introduction amount detection device 4 detects the luminance of daylight introduced into the space S as the daylight introduction amount. The daylight introduction amount detection device 4 may detect an amount other than the luminance such as the illuminance as the daylight introduction amount, but in the present embodiment, it will be described as detecting the luminance as the daylight introduction amount. As the daylight introduction amount detection device 4, for example, a window surface luminance sensor, a luminance image sensor, an outdoor pyranometer, an outdoor illuminometer, or the like can be used.

  The lighting control table 5 is a table in which the amount of daylight introduction and the control value patterns of the plurality of lighting fixture groups 2 are associated with each other based on the brightness feeling index value of the space S. The control value pattern is a pattern of control values of the plurality of lighting fixture groups 2. For example, in the case where the plurality of lighting fixture groups 2 includes lighting fixture group A, lighting fixture group B, and lighting fixture group C, the control value pattern includes control values of lighting fixture group A and control of lighting fixture group B. It becomes a combination of the value and the control value of the lighting fixture group C. The control value is a value for performing lighting control of the lighting fixture group 2. The control value may be, for example, a light control rate, a target illuminance, or the like. The dimming rate is expressed as a percentage of 0% to 100%. The dimming rate of 0% means a state in which the lighting fixture group 2 is not turned on, that is, a state in which the lighting fixture group 2 is turned off. The target illuminance is represented by a value of 0 lux or more. The target illuminance of 0 lux means a state in which the luminaire group 2 is not on, that is, a state in which the luminaire group 2 is off. In the following description, although the case where the light control rate is adopted as the control value is described, the same applies to the case where the target illuminance or the like is used. Details of the illumination control table 5 and a method of creating the illumination control table 5 will be described later.

  The lighting control unit 6 is a control server that performs lighting control of the plurality of lighting fixture groups 2 according to the daylight introduction amount from the window unit 11 with reference to the lighting control table 5. That is, the lighting control unit 6 acquires, from the lighting control table 5, the control value (light control rate) of the luminaire group 2 corresponding to the daylight introduction amount detected by the daylight introduction amount detection device 4. And lighting control part 6 performs lighting control of a plurality of lighting fixture groups 2 with the acquired control value (light control rate). That is, the lighting control unit 6 controls the switch 3 to perform lighting control with the control value (light control rate) for which the lighting fixture group 2 is acquired for each switch 3.

  Next, a lighting control method by the lighting control unit 6 will be described.

  As shown in FIG. 2, first, the lighting control unit 6 acquires the daylight introduction amount detected by the daylight introduction amount detection device 4 (S101). Next, the lighting control unit 6 acquires a control value pattern of the luminaire group 2 corresponding to the daylight introduction amount acquired in step S101 from the illumination control table 5 (S102). Next, the lighting control unit 6 performs lighting control of the lighting device group 2 with the control value pattern acquired in step S102 (S103). The lighting control by the lighting control unit 6 described above is repeatedly performed at predetermined intervals.

[Lighting control table]
Next, the lighting control table 5 will be described.

  The illumination control table 5 associates the daylight introduction amount with the control values of the plurality of lighting fixture groups 2 using the feeling of brightness in the space S as an index.

  The brightness sensation index value may be any value as long as the brightness sensation is used as an index. Also, the brightness feeling index value may be obtained by any method. In the present embodiment, as an example, a method of determining the brightness index value represented by the average luminance, the AD value, and the CD value will be described.

  Since the sense of brightness is a human sense amount, it is expressed as a brightness sense index value that quantifies the human sense amount. The perceived brightness index value is also referred to as a NSB (Natural-scale Space Brightness) value. The sense of brightness index value is 13 steps from 1 to 13 (1: very dark, 3: dark, 5: slightly dark, 7: not neither, 9: slightly bright, 11: bright, 13: very bright It is expressed by the ordinal scale of. Factors that affect the sense of brightness include, for example, average brightness, AD value (ambient-directivity value) and CD value (contrast-detail value).

  The AD value is the amount of luminance contrast with a long spatial period of light and dark which reduces the sense of brightness. The AD value is also referred to as the degree of non-uniformity of the first spatial frequency component that represents the nondirectionality of ambient light. In addition, environmental light is daylighting introduced from the window part 11, illumination by the lighting fixture group 2, etc. Nondirectionality is also called diffusivity. The CD value is the amount of luminance contrast with a short spatial period of light and dark to improve the sense of brightness. The CD value is also referred to as the degree of non-uniformity of the second spatial frequency component that represents the shading of the details. As the average luminance increases, the sense of brightness increases, and as the AD value decreases, the sense of brightness increases, and as the CD value increases, the sense of brightness increases. The brightness feeling index value is expressed by the following equation (1).

NSB value = 0.28e ^{1.6 [a x (average luminance)-b x (AD value) + c x (CD value) + d]} (1)
That is, the feeling of brightness index value is represented by a function using the average brightness, the AD value, and the CD value as explanatory variables. In Formula (1), a, b, c, d are constants.

As shown in FIG. 3, the lighting control table 5 includes a target NSB value, a daylight introduction amount (cd / m ² ), and a dimming rate (%) which is a control value of the lighting device group 2. The target NSB value is a brightness feeling index value which is a target of the space S. One target NSB value may be set in the illumination control table 5, and a plurality of target NSB values may be set. When a plurality of target NSB values are set in the illumination control table 5, the lighting control unit 6 refers to a table corresponding to any target NSB value selected by the user or the like. In the drawing, two target NSB values are set. The dimming rate is set for each lighting fixture group 2 to be controlled.

The width of the daylight introduction amount is a width that exerts a great influence on the brightness feeling index value from the viewpoint of reducing the number of steps of creating the lighting control table 5 while suppressing the size of the lighting control table 5 from being excessive. be able to. In this case, the intervals (widths) of the daylight introduction amounts do not have to be equal intervals, and may be, for example, logarithmic intervals. Specifically, as the daylight introduction amount, for example, 0 cd / ^{m 2} or more 300 cd / ^{m 2} less than the range as ^{0cd / m 2, 300cd / m} 2 or more 500 cd / ^{m 2} less than the range 300 cd / ^{m 2} and then, the 500 cd / ^{m 2} or more 750 cd / ^{m 2} less than the range set to 500 cd / ^{m 2,} the 750 cd / ^{m 2} or more 1000 cd / ^{m 2} less than the range and ^{750cd / m 2, 1000cd / m} 2 or more 2000 cd / ^m less than ² The range of 1000 cd / m ² and the range of 2000 cd / m ² or more are 2000 cd / m ² .

  Here, in the illumination control table 5, the daylight introduction amount may be associated with the control value pattern in a one-to-one manner, and a plurality of control value patterns may be associated with one daylight introduction amount. . FIG. 4 shows an example of the illumination control table 5 in which one control value pattern is associated with one daylight introduction amount, and FIG. 5 shows a plurality of control value patterns corresponding to one daylight introduction amount An example of the attached lighting control table 5 is shown. The lighting control table 5 shown in FIGS. 4 and 5 includes a target NSB value, a daylight introduction amount (cd / m 2), and control value patterns of a plurality of lighting fixture groups 2. One control value pattern corresponds to, for example, a pattern of control values of the lighting fixture groups A to C shown in FIG. In addition, FIG. 4 shows an example in which one control value pattern is associated with one target NSB value and one daylight introduction amount, and FIG. 5 shows one target NSB value and one daylight introduction. An example is shown in which three control value patterns are associated with quantities.

[Method of Creating a Lighting Control Table According to the First Embodiment]
Next, a method of creating the illumination control table according to the first embodiment will be described. The creation of the illumination control table described below may be performed by any entity, for example, by a computer provided with a CPU, a storage device, and the like.

  As shown in FIG. 6, first, a daylight introduction amount setting step S1 is performed. In the daylight introduction amount setting step S1, a set daylight introduction amount which is a setting value of the daylight introduction amount is set. The set daylight introduction amount is a daylight introduction amount set this time among a plurality of daylight introduction amounts set in the illumination control table 5.

  Next, target index value setting step S2 is performed. In the target index value setting step S2, a target brightness feeling index value is set. The target brightness feeling index value is a brightness feeling index value for realizing the brightness feeling which is the target of the space S. The target brightness feeling index value can be set according to the design of the light environment of the space S, and can be set to 6.0 or 7.0, for example.

  Next, pattern candidate setting step S3 is performed. In the pattern candidate setting step S3, a plurality of control value pattern candidates which are candidates for the control value pattern of the illumination control table 5 are set. As shown in FIG. 7, the control value pattern candidates are patterns of dimming rates of the plurality of lighting fixture groups 2. For example, in the case where the plurality of lighting fixture groups 2 includes lighting fixture group A, lighting fixture group B, and lighting fixture group C, the control value pattern candidates include the dimming ratio of lighting fixture group A, lighting fixture group B And the dimming rate of the lighting fixture group C. In the pattern candidate setting step S3, a plurality of control value pattern candidates are set. FIG. 7 shows 27 control value pattern candidates.

  By the way, the pattern of the light control rate of the lighting fixture group 2 exists infinitely. For this reason, it is not realistic to set control value pattern candidates for every pattern. Therefore, in the pattern candidate setting step S3, the upper limit of the light control rate of the luminaire group 2, the lower limit of the light control rate of the luminaire group, and the upper limit of the difference of the light control rate between the luminaire groups 2 are set. A plurality of control value pattern candidates are set under the set conditions. For example, as shown in FIG. 7, the upper limit of the dimming rate of the lighting fixture group 2 is 80%, and the lower limit of the dimming rate of the lighting fixture group 2 is 40%, as the setting conditions of the plurality of control value pattern candidates. The upper limit of the difference in light control rate between the lighting fixtures 2 is 40%.

  Next, index value acquisition step S4 is performed. In index value acquisition step S4, when daylight of the setting daylight introduction amount set in daylight introduction amount setting step S1 is introduced, lighting fixture group 2 is selected with the control value pattern candidate set in pattern candidate setting step S3. The brightness feeling index value of the space S when lighting control is performed is acquired. That is, in the index value acquisition step S4, the brightness index value of the space S is acquired for all control value pattern candidates set in the pattern candidate setting step S3. FIG. 7 shows an example of the feeling-of-brightness index value acquired in the index value acquisition step S4.

  As described above, since the sense of brightness is influenced by the average brightness, the AD value and the CD value, the brightness sense index value can be represented by a function having the average brightness, the AD value and the CD value as explanatory variables. . Therefore, in the index value acquisition step S4, first, the average luminance, the AD value and the CD value of the control value pattern candidate are acquired (S11).

  The average luminance, the AD value and the CD value can be calculated from the luminance distribution image. That is, the luminance distribution image corresponding to the control value pattern candidate is acquired, and the average luminance, the AD value, and the CD value are calculated from the acquired luminance distribution image. The luminance distribution image can be obtained by measuring the luminance distribution of the space S with an image sensor such as a digital camera, or calculating the luminance distribution of the space S from the model of the space S created by CAD.

  In this case, although all the control value pattern candidates set in the pattern candidate setting step S3 may be reproduced to obtain the brightness feeling index value, only some of the control value pattern candidates are selected for simplification of the operation. The brightness feeling index value may be reproduced to obtain the brightness feeling index value, and the brightness feeling index value of the remaining control value pattern candidates may be obtained using the obtained brightness feeling index value. There is no particular limitation on the method of determining the brightness sense index value of the remaining control value pattern candidates from the brightness sense index value of some of the control value pattern candidates, and various methods can be adopted. For example, a method using the additive nature of luminance can be adopted.

  The additiveness of the brightness means the brightness value in the image when the lighting device group A and the lighting device group B are simultaneously turned on, the brightness value of the same coordinate in the image when the lighting device group A is turned on, and the lighting device. It has the property of being the sum with the luminance value of the same coordinates in the image when the group B is turned on. When utilizing such an additive property of luminance, a luminance distribution image of a unit daylight introduction amount for each window portion 11 and a luminance distribution image of a unit light control rate for each lighting fixture group 2 may be obtained. The luminance distribution image of any daylight introduction amount and dimming rate can be acquired by the sum of the first-order polynomials.

  Specifically, in a light environment where daylight is not introduced from the window portion 11 into the space S, a luminance distribution image is obtained when the plurality of lighting fixture groups 2 are lighted at the reference light control rate. The reference dimming rate is an arbitrarily set dimming rate. The lighting fixture group 2 to be lighted can be selected arbitrarily. The luminance distribution image can be acquired from an image sensor or a CAD model. When acquiring a luminance distribution image from a captured image, the space S is imaged in the nighttime or in a state where a blackout blocking the introduction of daylight is applied to the window portion 11, whereby daylighting from the window portion 11 to the space S It is possible to acquire a luminance distribution image of the light environment in which no And this acquired luminance distribution image is made into a reference luminance distribution image. An example of the reference luminance distribution image is shown in FIG. FIG. 8 shows a reference luminance distribution image in the case where all the lighting fixture groups 2 are lit at the reference dimming rate with the reference dimming rate being 50%.

Further, in a state in which all the lighting fixture groups 2 are turned off, a luminance distribution image when daylighting of a unit daylighting introduction amount is introduced from the window portion 11 is acquired. The unit daylight introduction amount is a daylight introduction amount set arbitrarily. Acquisition of a luminance distribution image can be acquired from an image sensor, a CAD model, or the like. And this acquired luminance distribution image is made into a unit daylight introduction amount luminance distribution image. When a plurality of window portions 11 are formed in the space S, a unit daylight introduction amount luminance distribution image when daylight of a unit daylight introduction amount is introduced is acquired for each window portion 11. An example of a unit daylight introduction amount luminance distribution image is shown in FIG. FIG. 9 shows a unit daylight introduction amount luminance distribution image when the unit daylight introduction amount is 100 cd / m ² .

  In addition, in a light environment where daylight is not introduced from the window portion 11 to the space S, a luminance distribution image is obtained in the case where the lighting fixture group 2 is lighted at each unit light control rate. For example, in the case where the plurality of lighting fixture groups 2 includes three lighting fixture groups 2 including lighting fixture group A, lighting fixture group B, and lighting fixture group C, lighting fixture group A is lit at a unit dimming rate The brightness distribution image of when the lighting fixture group B is lighted at a unit light control rate, and the brightness distribution image when the lighting fixture group C is lighted at a unit light control rate are acquired. The unit light control rate is an arbitrarily set light control rate. Acquisition of a luminance distribution image can be acquired from an image sensor, a CAD model, or the like. Then, this acquired luminance distribution image is taken as a unit dimming ratio luminance distribution image corresponding to each lighting fixture group 2. An example of a unit light control rate luminance distribution image is shown in FIGS.

  In FIG. 10, a unit light control rate luminance distribution image is shown in the case where only the lighting fixture group 2 which is the ceiling light disposed in the center of the ceiling is lighted at a light control rate of 10%. In FIG. 11, the unit light control rate luminance distribution image at the time of making only the lighting fixture group 2 which is ceiling illumination arrange | positioned by a wall lighted by 10% of the light control rate is shown. FIG. 12 shows a unit light control rate luminance distribution image in the case where only the lighting fixture group 2 which is the ceiling illumination disposed in the window is lit at a light control rate of 10%. FIG. 13 shows a unit dimming ratio luminance distribution image when only the lighting fixture group 2 that is the window surface light-up illumination is lit at a dimming rate of 100%. FIG. 14 shows a unit dimming ratio luminance distribution image in the case where only the lighting fixture group 2 that is the wall indirect illumination is lit at a dimming rate of 100%.

  Then, the reference luminance distribution image is synthesized with a luminance distribution image obtained by multiplying the unit daylight introduction amount luminance distribution image by an arbitrary value so as to obtain the set daylight introduction amount. In addition, the luminance distribution obtained by multiplying the reference luminance distribution image by the unit dimming ratio luminance distribution image by an arbitrary value so that the dimming ratio of the lighting device group 2 in the control value pattern candidate is obtained for all lighting device groups 2 Synthesize an image. Thereby, the luminance distribution image in the control value pattern candidate can be acquired. The luminance distribution image is represented as a matrix in which numerical values equal in number to the number of pixels are vertically and horizontally arranged. A reference luminance distribution image is a matrix X, a unit dimming ratio luminance distribution image of a lighting fixture group A is a matrix Ya, a unit dimming ratio luminance distribution image of a lighting fixture group B is a matrix Yb, and unit lighting of a lighting fixture group C Assuming that the luminous intensity luminance distribution image is a matrix Yc and the unit daylight introduced amount luminance distribution image is a matrix Z, the luminance distribution image in the control value pattern candidate is expressed by the following equation (2).

Luminance distribution image = X + a × Ya + b × Y b + c × Y c + d × Z (2)
In Formula (2), a, b, c, d are arbitrary values.

  The method of calculating the AD value and the CD value from the luminance distribution image can be performed by various methods, and for example, can also be performed as follows. The next method is the method described in JP-A-2017-020993. First, the luminance distribution image is frequency decomposed into a plurality of different frequency components. As frequency decomposition, for example, wavelet decomposition of Symlet 6 can be employed. And the spatial frequency component decomposed | disassembled into the spatial frequency of 0.01 [cycle / deg] or more and 0.03 [cycle / deg] or less turns into a component showing the non-directivity of ambient light (ambient light). Therefore, the dispersion of luminance within a predetermined angle of view of the spatial frequency of 0.01 [cycle / deg] or more and 0.03 or less [cycle / deg], that is, the degree of non-uniformity is taken as the AD value. On the other hand, spatial frequency components resolved into spatial frequencies of 0.2 [cycle / deg] or more and 1.0 [cycle / deg] or less become components representing the shading of details such as edges of furniture. Therefore, the dispersion of luminance within a predetermined angle of view of the spatial frequency of 0.2 [cycle / deg] or more and 1.0 [cycle / deg] or less, that is, the degree of non-uniformity is taken as the CD value.

  Note that the reference luminance distribution image may not necessarily be used when acquiring the average luminance, the AD value, and the CD value. That is, the control value pattern is synthesized by combining the luminance distribution image obtained by multiplying the unit daylight light introduction luminance distribution image by an arbitrary value and the luminance distribution image obtained by multiplying the unit dimming ratio luminance distribution image by an arbitrary value. You may acquire the luminance distribution image in a candidate.

  Then, the average brightness, the AD value, and the CD value are calculated from the brightness distribution image in the acquired control value pattern candidate. In this case, the average luminance, the AD value and the CD value may be calculated from the entire luminance distribution image, but the average luminance, the AD value and the CD value may be calculated from within a predetermined angle of view of the luminance distribution image.

  The average luminance, the AD value and the CD value may be acquired without using the luminance distribution image. For example, the average luminance can be calculated from actual measurement values of an average luminance meter, an illuminance meter, a luminance meter array, and the like. The AD value can be calculated from actual measurement values of an illuminance meter array, a luminance meter array, and the like. The CD value can be calculated from actual measurement values of a luminance meter array or the like. The illuminometer array is composed of a plurality of illuminometers with low directivity, and can measure the illuminance of a plurality of surrounding areas. For this reason, it is suitable to use a luminometer array for calculation of AD value. The luminance meter array is composed of a plurality of highly directional luminance meters, and can measure the luminance of a plurality of surrounding areas. For this reason, it is preferable to use the luminance meter array for calculating the CD value.

  In addition, regarding acquisition of average luminance, if a luminance distribution image is captured under a plurality of conditions by an image sensor such as a digital camera, and a regression equation between the luminance distribution image and the measurement value of the luminometer is obtained, the measurement value of the luminometer is obtained. It is possible to obtain the linearity between the and the average luminance. Therefore, the average luminance can be calculated from the measurement value of the illuminometer using this linearity.

  In addition, regarding acquisition of AD values, if an image sensor such as a digital camera captures a luminance distribution image under a plurality of conditions, and obtains a regression equation of the luminance distribution image and the ratio of a plurality of luminometers, The linearity between the measured value and the AD value can be obtained. Therefore, using this linearity, it is possible to calculate an AD value from the measurement value of the illuminometer.

  In addition, regarding acquisition of AD values, brightness distribution images are captured under multiple conditions by an image sensor such as a digital camera, and the relationship between control value pattern candidates of multiple lighting fixture groups 2 and AD values is constructed as a database You can also Thereby, the AD value can be obtained from the control value pattern candidates of the plurality of lighting fixture groups 2.

  In addition, regarding acquisition of CD values, brightness distribution images are captured under a plurality of conditions by an image sensor such as a digital camera, and the relationship between control value pattern candidates of a plurality of lighting fixture groups 2 and CD values is constructed as a database. You can also Thereby, the CD value can be obtained from the control value pattern candidates of the plurality of lighting fixture groups 2. In addition, when there is no variation in the control value pattern candidate of the plurality of lighting fixture groups 2, the CD value is determined almost by the arrangement of the furniture and hardly fluctuates, so the CD value is fixed and the new acquisition is omitted. be able to.

  Alternatively, the average luminance and AD value may be acquired from the luminance distribution image, and the CD value may be acquired from a luminance meter, an illuminance meter, etc. The average luminance and CD value are acquired from the luminance distribution image, and the AD value is a luminance meter You may acquire from a luminometer etc. That is, two values out of the average luminance, the AD value, and the CD value may be obtained from the same information source.

  As described above, different methods can be adopted to acquire the average luminance, AD value and CD value, and therefore, it is sufficient to adopt a method which can be easily acquired from an image sensor, a luminance meter, an illuminance meter, etc. .

  In the index value acquisition step S4, next, the brightness index value of the control value pattern candidate is calculated from the acquired average luminance, AD value and CD value (S12). The calculation of the feeling of brightness index value can be performed by substituting the acquired average luminance, AD value, and CD value into the above-described equation (1).

  Next, the pattern selection step S5 is performed. In the pattern selection step S5, based on the brightness index value acquired in the index value acquisition step S4, the illumination control table corresponding to the set daylight introduction amount from the plurality of control value pattern candidates set in the pattern candidate setting step S3. Select the control value pattern of 5. The selected control value pattern is a control table corresponding to the set daylight introduction amount in the illumination control table.

  More specifically, in the pattern selection step S5, the pattern candidate setting step S3 is performed based on the brightness index value obtained in the index value acquisition step S4 and the target brightness feeling index value set in the target index value setting step S2. The control value pattern of the illumination control table 5 corresponding to the set daylighting introduction amount is selected from the plurality of control value pattern candidates set in the above. For example, in the pattern selection step S5, a control value pattern corresponding to the set daylight introduction amount is selected from among control value pattern candidates for which the brightness sensation index value is equal to or higher than the target brightness sensation index value. When there are a plurality of control value pattern candidates for which the brightness sensation index value is equal to or more than the target brightness sensation index value, any control value pattern candidate may be selected as a control value pattern corresponding to the set daylighting introduction amount. In this case, for example, the control value pattern candidate having the smallest brightness feeling index value may be selected as the control value pattern corresponding to the set daylighting introduction amount, and the control value pattern candidate having the largest brightness feeling index value is set. It may be selected as a control value pattern corresponding to the daylight introduction amount.

  Here, in the case of creating the illumination control table 5 (see FIG. 4) in which one control value pattern is associated with one daylight introduction amount, the pattern selection step S5 corresponds to one set daylight introduction amount. Select one control value pattern. On the other hand, in the case of creating the illumination control table 5 (see FIG. 5) in which a plurality of control value patterns are associated with one daylight introduction amount, the pattern selection step S5 corresponds to one set daylight introduction amount. Select multiple control value patterns.

  Next, it is determined whether there is another daylight introduction amount to be set (S6). If there is another daylight introduction amount to be set (S6: YES), next, the setting daylight amount is changed (S7), and the above-described steps S3 to S6 are performed again. On the other hand, when there is no other daylight introduction amount to be set (S6: NO), the creation of the illumination control table 5 is ended.

  As described above, in the lighting control table creation method according to the present embodiment, a plurality of control value pattern candidates are set, and the lighting fixture group is set as the control value pattern candidate when daylight of the set daylight introduction amount is introduced. The brightness feeling index value of the space S when lighting control is performed is acquired. Therefore, it is possible to create the illumination control table 5 in which the daylight introduction amount and the control value pattern are associated with each other based on the brightness feeling index value. For this reason, the lighting control unit 6 of the lighting system 1 performs lighting control with reference to the created lighting control table 5, thereby obtaining a desired sense of brightness according to the amount of daylight introduced from the window portion 11. Thus, lighting control of the plurality of lighting fixture groups 2 can be easily performed.

  Then, in order to select the control value pattern of the illumination control table 5 corresponding to the set daylight introduction amount from the plurality of control value pattern candidates based on the sense of brightness index value, the daylight introduction amount based on the sense of brightness index value The illumination control table 5 in which the control value pattern and the control value pattern are associated can be created.

  In addition, when creating the illumination control table 5 in which the daylight introduction amount and the control value pattern are associated in a one-to-one correspondence, the lighting control is performed with reference to the created illumination control table 5 to obtain the daylight introduction amount. Accordingly, since the control value pattern is necessarily determined, the lighting control of the lighting device group can be easily performed.

  On the other hand, in the case of creating the illumination control table 5 in which a plurality of control value patterns are associated with one daylight introduction amount, the degree of freedom of lighting control is performed by referring to the created illumination control table 5 and performing lighting control. In other words, since it is possible to select an optimal control value pattern from a plurality of control value patterns, it is possible to perform fine lighting control according to the situation.

  Further, since the control value pattern corresponding to the set daylight introduction amount is selected based on the brightness feeling index value and the target brightness feeling index value, the control value pattern can be appropriately selected.

  Further, in order to select a control value pattern corresponding to the set daylight introduction amount from among control value pattern candidates for which the brightness feeling index value is equal to or more than the target brightness feeling index value, the lighting control unit 6 of the lighting system 1 By performing lighting control with reference to the created lighting control table 5, lighting control of the plurality of lighting fixture groups 2 is performed so that a sufficient sense of brightness can be obtained in the space S having the window portion 11 capable of introducing daylight. be able to.

  Further, since the brightness index value is acquired for all control value pattern candidates, a more optimal control value pattern can be selected.

  Further, as the setting conditions of the plurality of control value pattern candidates, the upper limit of the control value of the lighting device group 2, the lower limit of the control value of the lighting device group 2, and the upper limit of the difference of the control value between the lighting device groups 2 are set. This can be limited so that an overly uneven lighting pattern is not set. Also, this can suppress the number of control value pattern candidates to be set from becoming excessive.

  Also, by calculating the brightness index value from the average brightness, the AD value and the CD value, the brightness index value can be calculated with high accuracy.

  Further, by calculating the average luminance, the AD value and the CD value from the luminance distribution image, the average luminance, the AD value and the CD value can be calculated with high accuracy.

  In addition, the average luminance can be determined quickly by determining the average luminance from the measurement values of the average luminance meter, the illuminance meter or the luminance meter array.

  Further, the AD value can be obtained quickly by obtaining the AD value from the measurement value of the illuminance meter array or the luminance meter array.

  Further, by obtaining the CD value from the measurement values of the luminance meter array, the CD value can be obtained quickly.

[Method of creating a lighting control table according to the second embodiment]
Next, a method of creating a lighting control table according to the second embodiment will be described.

  The method of creating the illumination control table according to the second embodiment is basically the same as the method of creating the illumination control table according to the first embodiment, and not all control value pattern candidates but some control value pattern candidates. It differs from the method of creating the illumination control table according to the first embodiment only in that the brightness index value is acquired. For this reason, below, only the matter different from the preparation method of the illumination control table which concerns on 1st embodiment is demonstrated, and the description similar to the creation method of the illumination control table which concerns on 1st embodiment is abbreviate | omitted.

  The illumination control table creation method according to the second embodiment prioritizes control value pattern candidates, and compares the brightness feeling index value with the target brightness feeling index value in the order of high priority, First, a control value pattern candidate for which the brightness feeling index value is equal to or more than the target brightness feeling index value is selected as a control value pattern of the illumination control table corresponding to the set daylighting introduction amount.

  Specifically, as shown in FIG. 15, when the pattern candidate setting step S3 is finished, next, the priority assignment step S21 is performed. In the priority assignment step S21, the plurality of control value pattern candidates set in the pattern candidate setting step S3 are prioritized (set).

  The priority of the control value pattern candidates is not particularly limited, but it is preferable to determine the priority based on an index that may affect the sense of brightness. For example, as shown in FIG. 16, the smaller the variation in the dimming rate of the lighting fixture group 2 is, the higher the priority may be. The variation of the dimming ratio can be represented, for example, by the dispersion of the dimming ratio. And, as the variation of the dimming ratio becomes smaller, the dimming ratio becomes more uniform. Further, as shown in FIG. 17, the lower the dimming rate of the first set of lighting fixtures 2 and the smaller the dimming rate of the second setting of lighting fixtures 2, the higher the priority. You may As the lighting fixture group 2 to be set first, for example, a lighting fixture group known to have low efficiency in advance can be used, and in FIG. The lighting fixture group 2 to be set second can be, for example, a lighting fixture group known to be inefficient next to the lighting fixture group 2 to be set first, and in FIG. There is.

  Next, control value pattern candidates for acquiring a feeling of brightness index value are selected (S22). In step S22, control value pattern candidates for which a feeling of brightness index value is to be acquired are selected in the order of high priority given in the priority assignment step S21. When step S22 is performed for the first time, the control value pattern candidate with the highest priority is selected in the priority assignment step S21.

  In index value acquisition step S4, only the brightness index values of the control value pattern candidates selected in step S22 are acquired, not the brightness index values of all the control value pattern candidates set in pattern candidate setting step S3.

  In the pattern selection step S5, the perceived brightness index value acquired in the index value acquisition step S4 (brightness index value of the control value pattern candidate selected in step S22) and the targeted brightness value set in the target index value setting step S2 Compare with index value. Then, when the perceived brightness index value acquired in the index value acquisition step S4 is equal to or greater than the target perceived brightness index value, the control value pattern candidate selected in step S22 is set to the illumination control table corresponding to the set daylighting introduction amount. Select as the control value pattern of 5.

  Next, it is determined whether the brightness feeling index value obtained in the index value obtaining step S4 is equal to or more than the target brightness feeling index value (S23). That is, in step S23, it is determined whether or not the control value pattern is selected in the pattern selection step S5. When it is determined that the perceived brightness index value acquired in the index value acquisition step S4 is not equal to or higher than the target perceived brightness index value (the control value pattern is not selected in the pattern selection step S5) (S23: NO), the process proceeds to step S22. The control value pattern candidate having the next highest priority is selected as a control value pattern candidate for returning and obtaining the brightness index value (S22). Then, the same process as described above is performed again.

  On the other hand, if it is determined that the perceived brightness index value acquired in the index value acquisition step S4 is equal to or greater than the target perceived brightness index value (the control value pattern is selected in the pattern selection step S5) (S23: YES), It is determined whether there is a daylight introduction amount to be set (S6). If there is another daylight introduction amount to be set (S6: YES), next, the setting daylight amount is changed (S7), and the above-described steps S3 to S6 are performed again. On the other hand, when there is no other daylight introduction amount to be set (S6: NO), the creation of the illumination control table 5 is ended.

  As described above, the brightness feeling index value and the target brightness feeling index value are compared in descending order of priority, and the control value pattern in which the brightness feeling index value first reaches the target brightness feeling index value Since the candidate is selected as the control value pattern corresponding to the set daylight introduction amount, the illumination control table 5 can be created without necessarily obtaining the brightness index value for all the control value pattern candidates. Therefore, the illumination control table 5 can be created efficiently.

[Method of creating a lighting control table according to the third embodiment]
Next, a method of creating a lighting control table according to the third embodiment will be described.

  The creation method of the illumination control table according to the third embodiment is basically the same as the creation method of the illumination control table according to the first embodiment, and the setting from a plurality of control value pattern candidates is also based on power consumption. It differs from the method of creating the illumination control table according to the first embodiment only in that the control value pattern of the illumination control table corresponding to the introduction amount is selected. For this reason, below, only the matter different from the preparation method of the illumination control table which concerns on 1st embodiment is demonstrated, and the description similar to the creation method of the illumination control table which concerns on 1st embodiment is abbreviate | omitted.

As shown in FIG. 18, when the pattern candidate setting step S3 ends, next, the power consumption acquisition step S31 is performed. In the power consumption acquisition step S31, the power consumption in the case where the lighting fixture group 2 is subjected to lighting control with the control value pattern candidate set in the pattern candidate setting step S3 is acquired. That is, in the power consumption acquisition step S31, power consumption is acquired for each of the control value pattern candidates set in the pattern candidate setting step S3. The power consumption can be calculated, for example, as follows. First, the power consumption in the case of lighting the lighting fixture group 2 at a predetermined dimming rate is calculated. And the power consumption of the lighting fixture group 2 in the case of performing lighting control by a control value pattern candidate is totaled. Thereby, the power consumption of the control value pattern candidate can be acquired. FIG. 19 shows an example of the power consumption acquired in the power consumption acquisition step S31. In FIG. 19, power consumption is represented by a value obtained by dividing the area of the space S, and the unit is (W / m ² ). However, the power consumption to be acquired does not necessarily have to be a value divided by the area of the space S, and may be expressed as a value not divided by the area of the space S, and the unit may be defined as (W).

  In the pattern selection step S5, in addition to the brightness feeling index value obtained in the index value obtaining step S4 and the target brightness feeling index value set in the target index value setting step S2, the power consumption obtained in the power consumption obtaining step S31 is used. The control value pattern of the illumination control table 5 corresponding to the set daylight introduction amount is selected from the plurality of control value pattern candidates set in the pattern candidate setting step S3 based on the above.

  The selection of the control value pattern corresponding to the set daylight introduction amount can be performed, for example, by the following method.

  In the pattern selection step S5, a control value pattern corresponding to the set amount of introduced daylight is selected from among control value pattern candidates whose brightness feeling index value is equal to or higher than the target brightness feeling index value and whose power consumption is less than the set power consumption. Select When there are a plurality of control value pattern candidates where the brightness feeling index value is equal to or higher than the target brightness feeling index value and the power consumption is equal to or less than the set power consumption, any control value pattern candidate is set to control corresponding to the daylight introduction amount It may be selected as a value pattern. For example, the control value pattern candidate having the smallest brightness feeling index value may be selected as the control value pattern corresponding to the set daylight introduction amount, and the control value pattern candidate having the largest brightness feeling index value may be set daylighting introduction It may be selected as a control value pattern corresponding to the quantity. Further, in the pattern selection step S5, a control value pattern candidate having the brightness feeling index value equal to or higher than the target brightness feeling index value and the smallest power consumption is selected as a control value pattern corresponding to the set daylighting introduction amount. It is also good. In the pattern selection step S5, the brightness feeling index value is equal to or higher than the target brightness feeling index value, and the brightness feeling index value (or the brightness feeling index value) with respect to the power consumption (or the increase amount of power consumption). The control value pattern candidate having the largest ratio of the increase amount) may be selected as the control value pattern corresponding to the set daylighting introduction amount.

  As described above, in the lighting control table creation method according to the present embodiment, lighting is performed with reference to the created lighting control table 5 in order to select the control value pattern corresponding to the set daylight introduction amount based on the power consumption. By controlling the power consumption of the plurality of lighting fixture groups 2 can be reduced.

  Also, a control value pattern corresponding to the set daylight introduction amount is selected from among control value pattern candidates whose brightness feeling index value is equal to or higher than the target brightness feeling index value and power consumption is less than the set power consumption. By performing lighting control with reference to the lighting control table 5 described above, lighting control of the plurality of lighting fixture groups 2 can be performed so that an increase in power consumption can be suppressed and a sufficient sense of brightness can be obtained.

  In addition, since the control value pattern candidate having the brightness feeling index value equal to or higher than the target brightness feeling index value and the smallest power consumption is selected as the control value pattern corresponding to the set daylighting introduction amount, the created illumination control table 5 By performing lighting control with reference to, it is possible to perform lighting control of the plurality of lighting fixture groups 2 so that an increase in power consumption is suppressed and a sufficient sense of brightness can be obtained.

  In addition, in order to select the control value pattern corresponding to the set daylight introduction amount based on the ratio of the brightness feeling index value to the power consumption, the power consumption is increased by performing lighting control with reference to the created illumination control table. The lighting control of the plurality of lighting fixture groups 2 can be performed so as to obtain a sufficient sense of brightness by suppressing the

[Method of creating a lighting control table according to the fourth embodiment]
Next, a method of creating a lighting control table according to the fourth embodiment will be described.

  The method of creating the illumination control table according to the fourth embodiment is basically the same as the method of creating the illumination control table according to the third embodiment, and not all control value pattern candidates but some control value pattern candidates. It differs from the method of creating the illumination control table according to the third embodiment only in that the brightness index value is acquired. For this reason, below, only the matter different from the preparation method of the illumination control table which concerns on 3rd embodiment is demonstrated, and the description similar to the creation method of the illumination control table which concerns on 3rd embodiment is abbreviate | omitted.

  In the lighting control table creation method according to the fourth embodiment, the control value pattern candidates are prioritized based on power consumption, and the brightness feeling index value and the target brightness feeling index value are compared in the order of high priority. First, a control value pattern candidate whose brightness sense index value has become equal to or higher than the target brightness sense index value is selected as a control value pattern of the illumination control table corresponding to the set daylight introduction amount.

  Specifically, as shown in FIG. 20, when the power consumption acquisition step S31 ends, next, the priority assignment step S41 is performed. In the priority assignment step S41, the plurality of control value pattern candidates set in the pattern candidate setting step S3 are prioritized (set) based on the power consumption acquired in the power consumption acquisition step S31.

  The priority of control value pattern candidates is not particularly limited as long as it is based on power consumption. For example, the higher the ratio of the brightness feeling index value to the power consumption, the higher the priority may be. Also, the lower the power consumption, or the closer the power consumption is to a set value, the higher the priority may be.

  Next, control value pattern candidates for acquiring a feeling of brightness index value are selected (S42). In step S42, control value pattern candidates for which a feeling of brightness index value is to be acquired are selected in descending order of priority given in the priority assignment step S41. When step S42 is performed for the first time, the control value pattern candidate with the highest priority is selected in the priority assignment step S41.

  In index value acquisition step S4, only the brightness index values of the control value pattern candidates selected in step S42 are acquired, not the brightness index values of all the control value pattern candidates set in pattern candidate setting step S3.

  In the pattern selection step S5, the perceived brightness index value acquired in the index value acquisition step S4 (brightness index value of the control value pattern candidate selected in step S42) and the targeted brightness value set in the target index value setting step S2 Compare with index value. Then, if the perceived brightness index value acquired in the index value acquisition step S4 is equal to or greater than the target perceived brightness index value, the control value pattern candidate selected in step S42 is set to the illumination control table corresponding to the set daylight introduction amount. Select as the control value pattern of

  Next, it is determined whether the brightness feeling index value obtained in the index value obtaining step S4 is equal to or more than the target brightness feeling index value (S43). That is, in step S43, it is determined whether or not the control value pattern is selected in pattern selection step S5. If it is determined that the perceived brightness index value acquired in the index value acquisition step S4 is not greater than or equal to the target perceived brightness index value (the control value pattern is not selected in the pattern selection step S5) (S43: NO), the process proceeds to step S42. The control value pattern candidate having the next highest priority is selected as a control value pattern candidate for obtaining a feeling of brightness index value, which is to be returned (S42). Then, the same process as described above is performed again.

  On the other hand, if it is determined that the perceived brightness index value acquired in the index value acquisition step S4 is equal to or greater than the target perceived brightness index value (the control value pattern is selected in the pattern selection step S5) (S43: YES), It is determined whether there is a daylight introduction amount to be set (S6). If there is another daylight introduction amount to be set (S6: YES), next, the setting daylight amount is changed (S7), and the above-described steps S3 to S6 are performed again. On the other hand, when there is no other daylight introduction amount to be set (S6: NO), the creation of the illumination control table 5 is ended.

  As described above, the brightness feeling index value and the target brightness feeling index value are compared in descending order of priority, and the control value pattern in which the brightness feeling index value first reaches the target brightness feeling index value Since the candidate is selected as the control value pattern corresponding to the set daylight introduction amount, the illumination control table 5 can be created without necessarily obtaining the brightness index value for all the control value pattern candidates. Therefore, the illumination control table 5 can be created efficiently.

  Further, by setting the priority higher as the ratio of the brightness feeling index value to the power consumption is larger, it is possible to select a control value pattern which can obtain a sufficient brightness feeling by suppressing an increase in the power consumption.

  As mentioned above, although the suitable embodiment of the present invention was described, the present invention is not limited to the above-mentioned embodiment.

  For example, when a plurality of control value pattern candidates are set and the brightness feeling index value of the control value pattern candidate is acquired, the daylight introduction amount and the control value pattern are associated based on the brightness feeling index value. Since the illumination control table can be created, after setting the plurality of control value pattern candidates and acquiring the brightness feeling index value of the control value pattern candidate, the illumination control table may be created by any method. . For example, all the set control value pattern candidates may be used as the control value pattern corresponding to the set daylighting introduction amount of the illumination control table as it is. In this case, the set control value pattern candidate and the control value pattern corresponding to the set daylighting introduction amount of the illumination control table are the same.

  Further, in the above embodiment, specific spatial frequencies of the AD value and the CD value at the time of frequency decomposition of the luminance distribution image are specified. However, the AD value may be a component of any spatial frequency as long as the spatial period of light and dark to reduce the sense of brightness is a long amount of luminance contrast. Similarly, the CD value may be any spatial frequency component as long as the spatial period of light and dark to improve the sense of brightness is a short amount of luminance contrast.

  In the above embodiment, the order in which the steps are performed is specified as the method of creating the illumination control table, but the order of the steps may be changed as long as not departing from the spirit of the present invention. For example, the target index value setting step S2 may be performed at any stage before the pattern selection step S5.

  In the second and fourth embodiments, the control value pattern candidates are prioritized to obtain the brightness index value for some control value pattern candidates. However, the control value pattern candidate is not necessarily required. For example, the order of acquiring the brightness sense index at random (the order of comparison with the target brightness sense index value) is set, and the brightness sense index is obtained and acquired in this order The perceived brightness index value may be compared with the target perceived brightness index value.

DESCRIPTION OF SYMBOLS 1 ... Lighting system, 2 (2a-2c) ... Lighting fixture group, 3 (3a-3c) ... Switch, 4 ... Daylight introduction amount detection apparatus, 5 ... Lighting control table, 6 ... Lighting control part, 11 ... Window part , 12 ... desk, 13 ... chair, 14 ... blind, S ... space.

Claims (19)

A plurality of lighting fixture groups provided in a space having a window part capable of introducing daylight, and a lighting control table in which a daylight introduction amount from the window part and a control value pattern of the lighting fixture group are associated in advance An illumination control unit for creating the illumination control table, the illumination control unit including: an illumination control unit that performs illumination control of the illumination fixture group based on a daylight introduction amount from the window unit with reference to the illumination control table; How to create a table,
Daylight introduction amount setting step of setting a setting daylight introduction amount which is a setting value of a daylight introduction amount;
A pattern candidate setting step of setting a plurality of control value pattern candidates which are candidates for the control value pattern;
When daylight of the set daylight introduction amount set in the daylight introduction amount setting step is introduced, lighting control of the lighting fixture group is performed with the control value pattern candidate set in the pattern candidate setting step An index value acquisition step of acquiring a brightness index value of the space;
How to create a lighting control table. The control of the illumination control table corresponding to the set daylight introduction amount from the plurality of control value pattern candidates set in the pattern candidate setting step based on the brightness feeling index value acquired in the index value acquisition step Further comprising a pattern selection step of selecting a value pattern,
A method of creating a lighting control table according to claim 1. In the pattern selection step, one control value pattern is selected corresponding to one set daylighting introduction amount,
The lighting control table creation method according to claim 2. In the pattern selection step, a plurality of control value patterns are selected in correspondence to one set daylight introduction amount,
The lighting control table creation method according to claim 2. It further comprises a target index value setting step of setting a target brightness feeling index value of the space corresponding to the set daylight introduction amount,
The pattern selection step corresponds to the set daylighting introduction amount based on the brightness feeling index value obtained in the index value obtaining step and the target brightness feeling index value set in the target index value setting step. Select the control value pattern,
The creation method of the illumination control table as described in any one of Claims 2-4. In the pattern selection step, the control value pattern corresponding to the set daylighting introduction amount is selected from among the control value pattern candidates for which the brightness feeling index value is equal to or more than the target brightness feeling index value.
A method of creating a lighting control table according to claim 5. The method further includes a power consumption acquisition step of acquiring power consumption when lighting control of the lighting fixture group is performed with the control value pattern candidate.
In the pattern selection step, in addition to the brightness feeling index value obtained in the index value obtaining step and the target brightness feeling index value set in the target index value setting step, the consumption obtained in the power consumption obtaining step The control value pattern corresponding to the set daylight introduction amount is also selected based on the power,
A method of creating a lighting control table according to claim 5. In the pattern selection step, among the control value pattern candidates for which the brightness feeling index value is equal to or more than the target brightness feeling index value and the power consumption is equal to or less than a set power consumption, the set daylighting introduction amount is supported. Select the control value pattern to be
The creation method of the illumination control table of Claim 7. In the pattern selection step, the control value pattern candidate having the brightness feeling index value equal to or more than the target brightness feeling index value and the smallest power consumption is the control value pattern corresponding to the set daylight introduction amount. To select as
The creation method of the illumination control table of Claim 7. In the pattern selection step, the control value pattern corresponding to the set daylight introduction amount is selected based on a ratio of the brightness feeling index value to the power consumption.
The creation method of the illumination control table of Claim 7. The method further comprises a priority assignment step of prioritizing the plurality of control value pattern candidates set in the pattern candidate setting step,
In the pattern selection step, the brightness feeling index value and the target brightness feeling index value are compared in descending order of the priority given in the priority assignment step, and the brightness feeling index is first introduced. The control value pattern candidate having a value equal to or more than the target brightness feeling index value is selected as the control value pattern corresponding to the set daylighting introduction amount.
The creation method of the lighting control table as described in any one of Claims 5-10. In the priority assigning step, the priority is set higher as the ratio of the brightness feeling index value to the power consumption is larger.
The lighting control table creation method according to claim 11. In the index value acquisition step, the feeling of brightness index value is acquired for all of the control value pattern candidates set in the pattern candidate setting step.
The creation method of the illumination control table as described in any one of Claims 1-10. In the pattern candidate setting step, the upper limit of the control value of the luminaire group, the lower limit of the control value of the luminaire group, and the upper limit of the difference of the control value between the luminaire groups are set, and the set conditions Setting a plurality of control value pattern candidates in
The lighting control table creation method according to any one of claims 1 to 13. In the index value acquisition step, an average brightness of the control value pattern candidate, an AD value which is an amount of brightness contrast where the spatial cycle of light and dark to reduce the feeling of brightness is long, and a spatial of light and dark to improve the feeling of brightness Acquiring a CD value which is an amount of luminance contrast whose cycle is short, and calculating the brightness index value of the control value pattern candidate from the acquired average luminance, the AD value and the CD value;
The creation method of the illumination control table as described in any one of Claims 1-14. In the index value acquisition step, the average luminance, the AD value, and the CD value are calculated from a luminance distribution image.
The lighting control table creation method according to claim 15. In the index value acquisition step, the average luminance is obtained from measurement values of a luminance meter array configured by an average luminance meter, an illuminance meter, or a plurality of luminance meters.
The lighting control table creation method according to claim 15. In the index value acquisition step, the AD value is obtained from measurement values of an illuminance meter array configured of a plurality of illuminance meters or a luminance meter array configured of a plurality of luminance meters.
The lighting control table creation method according to claim 15 or 17. In the index value acquisition step, the CD value is obtained from the measurement values of a luminance meter array configured by a plurality of luminance meters.
A method of creating a lighting control table according to claim 15, 17 or 18.