JP2017010862A - Lighting control system, lighting control program and lighting control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting control system that simply and accurately achieves a mutual influence degree from plural luminaire groups to irradiation target surface brightness of plural irradiation target sections.SOLUTION: An illumination control system (1) comprises an image device (2) for imaging the whole illumination target surface containing irradiation target sections (5) of m to generate an irradiation target surface image, and CPU (30) including a lighting control unit (301) for turning on and off each of luminaire groups (6) of n (n=m) each including one or more luminaires (4), a brightness distribution acquiring unit (302) for acquiring a brightness distribution of the irradiation target surface from the irradiation target surface image, and a contribution rate calculator (305) for calculating a brightness value Vto Vin the irradiation target sections of m under the state that a k-th luminaire group is turned on and the remaining luminaire groups are turned off, and calculating a contribution rate of the irradiation target surface brightness received by a j-th irradiation target section from the k-th luminaire group: C=V/(V+V+,,+V).SELECTED DRAWING: Figure 1

Description

  The present invention relates to an illumination control system, an illumination control program, and an illumination control method.

  Patent Literature 1 discloses an illumination dimming rate determination device that can set dimming rates of a plurality of illuminations. This device includes a dimming rate / illuminance model generator that generates simultaneous equations that output the illuminance at each point when the dimming rate of each illumination is input, and represents the simultaneous equations in a matrix, Illuminance / dimming rate model generation unit that generates an inverse matrix that outputs the dimming rate of each illumination when input, and dimming using the illuminance at each point input from the target illuminance input unit as input to the inverse matrix A dimming rate determination unit that obtains the rate as an output. The generation of the illuminance / dimming model is based on input elements such as the illuminance of the luminaire, the installation position information of the luminaire, the light distribution curve information of the luminaire, the angle of the luminaire, and the distance between the luminaire and the illumination point.

Japanese Patent No. 563234

  However, since the apparatus of Patent Document 1 requires a large number of input elements as described above, the work and processing until the dimming rate of each lighting fixture for the target brightness is complicated. . In an actual lighting space (office, gymnasium, etc.), lighting fixtures are often grouped into a plurality of lighting fixture groups, and the irradiated area on the floor side is often divided into a plurality of irradiated zones. And the situation (material, color, etc.) of the floor surface may differ depending on the irradiated section, and the mutual influence between the illuminances of the grouped lighting fixtures does not always match the mutual influence on the floor luminance. Absent. As described above, there has been a problem that it is not possible to easily and accurately acquire the mutual influence degree on the brightness of the irradiated surface such as the floor surface from a plurality of lighting fixtures.

  Therefore, the present invention provides an illumination control system, program, and method capable of easily and accurately acquiring the degree of mutual influence on the irradiated surface brightness of a plurality of irradiated sections from a plurality of lighting fixture groups. This is the issue.

として演算する寄与率演算部を有するＣＰＵとを備える。 The illumination control system of the present invention includes at least one imaging device for imaging the entire irradiated surface including the first to mth (2 ≦ m) irradiated sections and generating an irradiated surface image. A lighting control unit that turns on and off each of the first to nth (n = m) lighting fixture groups including the lighting fixtures, a luminance distribution acquisition unit that acquires the luminance distribution of the irradiated surface from the irradiated surface image, and Luminance values V _{(k, 1) to} V _{( 1)} in the first to m-th irradiated sections in a state where the kth (1 ≦ k ≦ n) lighting fixture group is turned on and the remaining lighting fixture groups are turned off. _{k, m)} and the contribution ratio C _{(k, j)} of the irradiated surface brightness received by the jth (1 ≦ j ≦ m) irradiated section from the kth lighting fixture group.

And a CPU having a contribution rate calculation unit.

  According to the lighting control system, the luminance contribution ratio from each lighting fixture group to each irradiated section is calculated based on the luminance distribution captured by the imaging device, not the illuminance of each lighting fixture or each lighting fixture group. Is done. Accordingly, it is possible to easily and accurately obtain the degree of mutual influence on the irradiated surface brightness of the plurality of irradiated sections from the plurality of lighting fixture groups.

の行列で表され、第１〜第ｍの被照射区画の各々の輝度設定値Ｌ_１〜Ｌ_ｍが、

の行列で表され、第１〜第ｎの照明器具グループの各々の調光率Ｒ_１〜Ｒ_ｎが、

の行列で表される場合に、ＣＰＵが、行列ＲをＲ＝Ｃ^−１Ｌによって決定する調光率決定部をさらに有していてもよい。これにより、複数の照明器具グループから複数の被照射区画に与えられる輝度の複雑な相関性においても適切な調光制御が実現される。 Further, the contribution ratios C _{(1,1) to} C _{(n, m)} of the irradiated surface luminance from the first to nth lighting fixture groups to the first to mth irradiated sections are:

The luminance setting values L _{1 to} L _m of each of the first to m-th irradiated sections are represented by the following matrix:

The dimming rates R _{1 to} R _n of each of the first to nth luminaire groups are represented by:

In this case, the CPU may further include a dimming rate determination unit that determines the matrix R by R = C ⁻¹ L. Thereby, appropriate dimming control is realized even in the complex correlation of the brightness given to the plurality of irradiated sections from the plurality of lighting fixture groups.

  Here, when the unit of the dimming rate is%, when the dimming rate determining unit includes a negative value element in the dimming rate matrix R, the element is replaced with 0%, and the dimming rate If there is an element exceeding 100% in the matrix R, the element is replaced with 100%. As a result, even when a luminance setting value that cannot be actually executed is given, it is possible to perform dimming control with a luminance setting value that is substantially close to the luminance setting value.

  The lighting control unit is configured to change the brightness of each of the lighting fixtures included in the first to nth lighting fixture groups, and the CPU distributes the luminance distribution with respect to the change in brightness for each of the lighting fixtures. A luminance center specifying unit for obtaining a luminance center position based on the difference between the two, and specifying which of the first to m-th irradiated sections the luminance center position is included in and included in the same irradiated section There may be further provided a grouping unit for grouping the lighting fixtures having the luminance center position into the same lighting fixture group. As a result, appropriate grouping of the lighting fixture groups is performed, and it becomes possible to accurately and efficiently acquire the correspondence between the plurality of lighting fixtures and the irradiated surface brightness of the plurality of irradiated sections, and lighting control. The ease of system introduction increases.

  Here, the grouping unit groups lighting fixtures whose luminance center positions are not included in any of the first to m-th irradiated zones in any of the first to n-th lighting fixture groups. It is preferable not to divide. This further increases the correlation between each of the lighting fixture groups and each of the irradiated sections.

  Further, the lighting control unit turns on and off the selected lighting fixture among the plurality of lighting fixtures, and the luminance center specifying unit determines the luminance distribution when the selected lighting fixture is turned on in the luminance distribution of the irradiated surface. And the difference of the luminance distribution at the time of light extinction is acquired, and the gravity center position in the difference is specified as the luminance center position. As a result, the luminance center position is accurately obtained with a small number of processing steps, so that the efficiency and accuracy in grouping the lighting fixtures is ensured.

Furthermore, a display screen including a touch panel is provided, and the CPU determines the luminance of the selected irradiated section in the luminance setting matrix L in response to a touch operation to a spot belonging to the selected irradiated section on the touch panel. It further includes a luminance adjustment execution unit that corrects the set value to generate a corrected luminance matrix Lc, the dimming rate determination unit recalculates the dimming rate matrix R by R = C ⁻¹ Lc, and the lighting control unit The dimming control of the first to nth lighting fixture groups may be performed according to the calculated dimming rate matrix R. Thereby, the user can increase / decrease the luminance of the selected irradiated section intuitively and adjust the luminance distribution of the entire irradiated region in a real-time manner.

  In addition, the brightness adjustment execution unit increases the brightness setting value of the selected irradiated section when the touch operation is a pinch-out, and the brightness setting value of the selected irradiated section when the touch operation is a pinch-in. It is preferably configured to reduce. This increases the intuition of the brightness adjustment operation.

  Further, the main CPU including all or part of each part of the CPU may be integrated with the imaging apparatus. Thereby, when an imaging device, main CPU, and a lighting fixture are installed collectively on the ceiling side, the space on the ground side can be effectively used. In addition, the lighting control signal for turning on, turning off, and dimming the lighting fixture from the main CPU will be arranged only on the ceiling side, improving the workability of the lighting control system and improving the communication environment of the lighting control signal. To do.

  The present invention also includes a lighting control program for causing a computer to function as each unit included in the lighting control system. Furthermore, the present invention includes a computer-readable storage medium in which the lighting control program is stored. Furthermore, the present invention includes a lighting control method including a step of executing processing of each part of the lighting control system.

1 is a block diagram of a lighting control system according to a first embodiment of the present invention. It is a figure explaining the to-be-irradiated surface in this invention. It is a flowchart which shows the illumination control method by 1st Embodiment. It is a block diagram of the illumination control system by the 2nd Embodiment of this invention. It is a figure explaining the difference image of this invention. It is a figure explaining the difference image of this invention. It is a flowchart which shows the illumination control method by 2nd Embodiment. It is a block diagram of the illumination control system by the 3rd Embodiment of this invention. It is a figure explaining the adjustment mode screen in 3rd Embodiment. It is a block diagram of the illumination control system by the 4th Embodiment of this invention.

<First Embodiment>
FIG. 1 shows a block diagram of a lighting control system 1 according to an embodiment of the present invention. The lighting control system 1 includes an imaging device 2 and a control device 3, and the control device 3 controls lighting of the lighting fixtures 4-1 to 4-z. The imaging device 2 and the lighting fixtures 4-1 to 4-z are arranged facing the floor surface F in the vicinity of the ceiling Ce of the lighting space S. For example, the control device 3 may be disposed in a management room or the like separate from the illumination space S, or may be disposed in a part of the illumination space S. Each of the lighting fixtures 4-1 to 4-z includes a lighting device (not shown) fed from a power line (not shown) and a light source (not shown) supplied with a predetermined current from the lighting device. The illumination space S may be, for example, an office, a gymnasium, or the like, and each light source of the lighting fixtures 4-1 to 4-z may be an LED, a fluorescent lamp, a high-pressure discharge lamp, a mercury lamp, or the like. In the following description, the lighting fixtures 4-1 to 4-z are collectively referred to as the lighting fixture 4 or the lighting fixture 4-i.

  FIG. 2 is a schematic top view when the illumination space S is an office. As shown in FIG. 2, in the illumination space S, the floor surface F to be irradiated is divided into a plurality of irradiated sections 5-1 to 5-m (m = 3 in FIG. 2) (each (Departments will have desks, chairs, shelves, partitions, etc.) In the following description, the irradiated sections 5-1 to 5-m are collectively referred to as the irradiated section 5 or the irradiated section 5-j. In addition, in this specification, the floor surface F does not necessarily need to be the floor in the structure of a building, and may be the upper surface of installation objects, such as a desk, a fixture, and a rug. In other words, in the following embodiments, the irradiated surface and the floor surface F are substantially synonymous.

  Returning to FIG. 1, the lighting fixtures 4-1 to 4-z are grouped into n (n = m) lighting fixture groups 6, and the lighting fixture groups 6-1 to 6-n (n = m). Corresponds to each of the irradiated sections 5-1 to 5-m. Here, it is assumed that the irradiated sections 5-1 to 5-m are set within a reasonable range so that there is no luminaire group that does not include any luminaire (in the first place, the luminaire is installed). No areas are not scheduled for lighting control). In the following description, the lighting fixture groups 6-1 to 6-n are collectively referred to as a lighting fixture group 6 or a lighting fixture group 6-k as a representative of some of them.

  The imaging device 2 is a camera, for example, and includes an imaging element 20 and a communication unit 21. The imaging device 2 captures the entire irradiated surface (that is, the floor surface F, hereinafter the same) including the irradiated sections 5-1 to 5-m, and acquires an irradiated surface image. The imaging element 20 is installed in the vicinity of the center of the ceiling Ce so as to face the floor surface F so that the entire irradiated area (or the entire area of the floor surface F) is an imaging range. Note that the imaging element 20 may be disposed on the ceiling Ce side with respect to the light source surface of each lighting fixture 4 as long as it can photograph the floor surface F, or the floor surface F with respect to the light source surface of each lighting fixture 4. It may be arranged on the side. An image of the floor surface F (illuminated surface image) captured by the image sensor 20 is transmitted to the receiving unit 33 of the control device 3 by the communication unit 21. Communication between the communication unit 21 and the reception unit 33 may be wired or wireless. Note that the irradiated surface image may be a real image or an image that simply represents the level of brightness with shading. Therefore, in this specification, the luminance refers to the brightness of the irradiated surface viewed from the image sensor 20 unless otherwise specified.

  The control device 3 includes a CPU 30, a storage unit 31, a user interface unit (user I / F) 32, a reception unit 33, and a transmission unit 34, which are connected in such a manner that data or signals can be exchanged with each other. . The control device 3 may be a dedicated computer or a personal computer in which a program to be described later is installed. The storage unit 31 is a memory that stores various programs and data.

  The user I / F 32 is a display screen as an output unit for displaying an input unit 320 such as a keyboard, a mouse, and a touch panel that receives input from the user, an image captured by the imaging device 2, a result of processing by the CPU 30, and the like. 325. When the input unit is a touch panel, the display screen 325 constitutes a part of the input unit 320.

  The receiving unit 33 receives captured image data from the imaging device 2 and inputs it to the CPU 30. The transmission unit 34 transmits a lighting control signal from the CPU 30 (lighting control unit 301) for lighting, turning off, or dimming each lighting fixture 4 to each lighting fixture 4. Communication between the transmitter 34 and each lighting fixture 4 may be wired or wireless. When communication between the units described in this specification is wired, for example, TCP / IP, RS485, or the like can be used as a communication protocol. Moreover, when communication between each part described in this specification is wireless, for example, WiFi, ZigBee, or the like can be used as a communication protocol. However, the communication protocol is not limited to these.

  The CPU 30 includes a setting management unit 300, a lighting control unit 301, a luminance distribution acquisition unit 302, a contribution rate calculation unit 305, and a dimming rate determination unit 306. The CPU 30 can cause the respective units to interact with each other by a processing unit (not shown), and can execute a program for causing the computer to function as the above-described units 300 to 306.

  The setting management unit 300 sets the division of the irradiated section 5 (section setting), the grouping setting of the luminaire group 6 with respect to the section setting (group setting), and the luminance setting value of each irradiated section 5 for the group setting ( Brightness setting) is read from the storage unit 31 based on the user input. That is, the combination of the group setting and the brightness setting is determined based on the user input from the user I / F 32. There may be one or more group settings stored in the storage unit 31, and there may be one or more luminance settings for each group setting.

  The lighting control unit 301 has an individual control function and a group control function. With the individual control function, each of the lighting fixtures 4 can be individually turned on and off, and can be dimmed individually as necessary. Moreover, the lighting fixture 4 is turned on, off, and dimmed for each lighting fixture group 6 by the group control function.

  The luminance distribution acquisition unit 302 acquires the luminance distribution of the irradiated surface from the irradiated surface image captured by the imaging device 2.

として演算する。 The contribution rate calculation unit 305 specifies the contribution rate of the irradiated surface luminance from each of the lighting fixture groups 6 received by each of the irradiated sections 5 based on the luminance distribution acquired by the luminance distribution acquisition unit 302. Specifically, first, in a state in which the lighting fixture group 6-k is turned on and the remaining lighting fixture group 6 is turned off by the group control function of the lighting control unit 301, the contribution rate calculation unit 305 determines the luminance distribution. To calculate the luminance values V _{(k, 1) to} V _{(k, m)} in each of the irradiated sections 5-1 to 5-m. Then, the contribution rate calculation unit 305 calculates the contribution rate C _{(k, j)} of the irradiated surface luminance from the lighting fixture group 6-k to the irradiated section 5-j.

Calculate as

As a specific example, a case is assumed where irradiated sections 5-1 to 5-3 and lighting fixture groups 6-1 to 6-3 corresponding thereto exist in the illumination space S. First, the lighting control unit 301 turns on the lighting fixture group 6-1 and turns off the lighting fixture groups 6-2 and 6-3. In this state, the contribution rate calculation unit 305 calculates the luminance values V _{(1, 1) to} V _{(1, 3)} in each of the irradiated sections 5-1 to 5-3 based on the luminance distribution. This luminance value is calculated by dividing the integral value of the light color level included in each of the irradiated sections 5-1 to 5-3 by the area of each irradiated section. as a result,
Luminance value V _(1,1) = 51 (cd / m ² ) of irradiated section 5-1
Luminance value V _(1,2) = 17 (cd / m ² ) of irradiated section 5-2
Luminance value V _(1,3) = 5 (cd / m ² ) of irradiated section 5-3
Suppose that Similarly, the lighting control unit 301 turns on the lighting fixture group 6-2 and turns off the lighting fixture groups 6-1 and 6-3, and the contribution rate calculation unit 305 determines the irradiated sections 5-1 to 5-1 based on the luminance distribution. The luminance values V _{(2,1) to} V _(2,3) in each of 5-3 are calculated. as a result,
Luminance value V _(2,1) = 34 (cd / m ² ) of irradiated section 5-1
Luminance value V _(2,2) = 69 (cd / m ² ) of irradiated section 5-2
Luminance value V _(2,3) = 28 (cd / m ² ) of irradiated section 5-3
Suppose that Similarly, the lighting control unit 301 turns on the lighting fixture group 6-3 and turns off the lighting fixture groups 6-1 and 6-2, and the contribution rate calculation unit 305 determines the irradiated sections 5-1 to 5-1 based on the luminance distribution. The luminance values V _{(3, 1) to} V _{(3, 3)} in 5-3 are calculated. as a result,
Luminance value V _(3,1) = 6 (cd / m ² ) of irradiated section 5-1
Luminance value V _(3,2) = 23 (cd / m ² ) of irradiated section 5-2
Luminance value V _(3,3) = 56 (cd / m ² ) of irradiated section 5-3
Suppose that

From the above results, the contribution rate calculation unit 305 calculates the contribution rates C _{(1, 1) to} C _{(3, 3)} ,
Contribution rate C _(1,1) = V _(1,1) / (V _(1,1) + V _(2,1) + V _(3,1) )
= 51 / (51 + 34 + 6) = 56 (%) (hereinafter the same)
Contribution rate C _(2,1) = 34 / (51 + 34 + 6) = 38 (%)
Contribution rate C _(3,1) = 6 / (51 + 34 + 6) = 7 (%)
Contribution rate C _(1,2) = 17 / (17 + 69 + 23) = 16 (%)
Contribution rate C _(2,2) = 69 / (17 + 69 + 23) = 63 (%)
Contribution rate C _(3,2) = 23 / (17 + 69 + 23) = 21 (%)
Contribution rate C _(1,3) = 5 / (5 + 28 + 56) = 5 (%)
Contribution rate C _(2,3) = 28 / (5 + 28 + 56) = 31 (%)
Contribution rate C _(3,3) = 56 / (5 + 28 + 56) = 64 (%)
Calculate as Thereby, data as shown in Table 1 below is obtained.

  By outputting the data as described above to the display unit of the user I / F 32, the user can accurately and clearly grasp the influence level of the luminance from each lighting fixture group 6 to each irradiated area 5. . For example, in controlling the brightness of the irradiated section 5-1, it is more effective to control not only the corresponding lighting fixture group 6-1 but also the lighting fixture group 6-2. It can be easily understood that the control of -3 is hardly useful.

の行列（以下、「寄与率行列Ｃ」という）で表される。 Generalizing the above example of the contribution rate calculation, each contribution rate C _{(1, 1) of the} irradiated surface luminance from the lighting fixture groups 6-1 to 6-n to the irradiated sections 5-1 to 5-m. ~ C _{(n, m)} is

(Hereinafter referred to as “contribution rate matrix C”).

の行列（以下、「輝度設定行列Ｌ」という）で表され、照明器具グループ６の各々の調光率Ｒ_１〜Ｒ_ｎ（％）が、

の行列（以下、「調光率行列Ｒ」という）で表される場合、

が成り立つ。 Therefore, each luminance setting value L _{1 to} L _m (%) of the irradiated section 5 is

The dimming rates R _{1 to} R _n (%) of each of the lighting fixture groups 6 are represented by a matrix (hereinafter referred to as “brightness setting matrix L”).

(Hereinafter referred to as “dimming rate matrix R”),

Holds.

Therefore, the dimming rate determining unit 306 sets the dimming rate matrix R to R = C ⁻¹ L for a given luminance setting matrix L.
Can be determined by. The lighting control unit 301, each of the luminaire groups 6-1 to 6-n, by turning on at the determined dimmer rate _R 1 to R _n, is desired brightness setting _L 1 ~L _m realized Will be.

  Here, if the dimming rate matrix R has a negative value (less than 0%) element, the dimming rate determining unit 306 replaces the element with 0%, and the dimming rate matrix R has 100%. If there is an element that exceeds 100%, the element is configured to be replaced with 100%. Therefore, all elements of the dimming rate matrix R have values within 0 to 100%. As a result, even when a luminance setting that cannot be performed in practice (for example, a luminance setting with a large difference in brightness between adjacent irradiated sections) is given, the adjustment with a luminance setting value that is substantially close to the luminance setting value is performed. Light control is possible.

In addition, the dimming rate determination unit 306 may notify the user that the replacement process has been performed by an output unit (a display screen 325, a separate speaker, or the like) of the user I / F 32. Thereby, the user can recognize that the initial luminance setting is not completely realized. Alternatively, based on the fact that 0% or 100% is included in the calculated dimming rate, the user can infer that the replacement process has been performed (even if there is no notification). Note that the probability that the inverse matrix C ⁻¹ of the contribution matrix C does not exist is very small, but if the inverse matrix C ⁻¹ does not exist, an error display is output to the user I / F 32 and the brightness setting value is displayed to the user. You should be encouraged to reset.

  Furthermore, the dimming rate determination unit 306 generates an approximate dimming rate matrix R ′ obtained by applying the above replacement process to the dimming rate matrix R, and calculates the approximate luminance setting matrix L ′ by L ′ = CR ′. It may be. Each element of the approximate luminance setting matrix L ′ based on the calculation result may be overwritten on each element of the luminance setting matrix L and stored in the storage unit 31 or notified to the user via the user I / F 32. You may be made to do.

FIG. 3 shows a flowchart relating to dimming control of the illumination control method according to the present embodiment.
In step S105, the luminance setting matrix L for the group setting is determined. The luminance setting matrix L for the selected group setting may be determined in advance, or the luminance setting matrix L for the selected group setting may be manually input by the user.
In step S106, k = 1 is set for the lighting fixture group 6-k.

In step S110, the lighting control unit 301 turns on the lighting fixture group 6-k and turns off the remaining lighting fixture group 6.
In step S111, the luminance distribution acquisition unit 302 acquires the luminance distribution of the entire irradiated surface of the irradiated sections 5-1 to 5-m.

In step S115, the contribution rate calculation unit 305 calculates the luminance values V _{(k, 1) to} V _{(k, m)} for each of the irradiated sections 5.
In step S <b> 116, the contribution rate calculation unit 305 performs the irradiation from the luminaire group 6-k to the irradiated sections 5-1 to 5-m based on the luminance values V _{(k, 1) to} V _{(k, m).} The contribution ratios C _{(k, 1) to} C _{(k, m)} of the irradiated surface luminance are calculated (see [Formula 5] above).

  In step S120, it is determined whether the luminance acquisition has been completed for all the lighting fixture groups 6-n. If it is determined that all the luminance acquisitions have been completed (step S120, Yes), the process proceeds to step S125. Otherwise (step S120, No), k is incremented in step S121, and the process proceeds to step S125. Return to S110.

In step S125, the contribution rate calculation unit 305 generates a contribution rate matrix C.
In step S <b> 130, the dimming rate determination unit 306 calculates R = C ⁻¹ L for the dimming rate matrix R of the lighting fixture groups 6-1 to 6-n.

In step S <b> 135, the dimming rate determination unit 306 determines whether or not the dimming rate matrix R includes a negative value element. When there is a negative value element (step S135, Yes), in step S136, the dimming rate determination unit 306 replaces the negative value element with 0%. If there is no negative element (step S135, No), the process proceeds to step S137.
In step S137, the dimming rate determination unit 306 determines whether there is an element exceeding 100% in the dimming rate matrix R. If there is an element exceeding 100% (step S137, Yes), in step S138, the dimming rate determining unit 306 replaces the element exceeding 100% with 100%. If there is no element exceeding 100% (step S137, No), the process proceeds to step S140.

In step S140, the lighting control unit 301 controls the dimming luminaire groups 6-1 to 6-n in accordance with the determined dimmer rate _R 1 to R _n.

  Information (contribution rate matrix C, dimming rate matrix R, etc.) obtained in the above steps is appropriately stored in the storage unit 31 in each step. Further, part or all of the processing results of the above steps are output to the display screen 325 of the user I / F 32 sequentially or collectively. This display may be a graphic display in which information such as the irradiated section 5, the calculated luminance value, the calculated contribution rate, and the determined dimming rate is overwritten on the irradiated surface image, or It may be a text display in which information is represented by a table or a numerical value.

As described above, the illumination control system 1 according to the present embodiment captures the entire irradiated surface including the irradiated sections 5-1 to 5-m and generates an irradiated surface image; The CPU 30 is connected to the image pickup apparatus 2 by communication. The CPU 30 turns on and off each of the lighting fixture groups 6-1 to 6 -n (n = m) each including one or more lighting fixtures 4, and the luminance of the irradiated surface from the irradiated surface image The luminance distribution acquisition unit 302 for acquiring the distribution and the luminance value V _{(k, k)} in the irradiated sections 5-1 to 5-m in a state where the lighting fixture group 6-k is turned on and the remaining lighting fixture groups are turned off _{. 1) to} V _{(k, m)} are calculated, and the contribution ratio C _{(k, j)} = V _{(k, j)} / ( _{) of the} irradiated surface brightness received by the irradiated section 5-j from the luminaire group 6-k V _{(1, j)} + V _{(2, j)} +... + V _{(n, j)} ) is included. In this way, the contribution ratio of the luminance from each lighting fixture group 6 to each irradiated section 5 based on the luminance distribution captured by the imaging device 2 instead of the illuminance or the like of each lighting fixture 4 or each lighting fixture group 6. Is calculated. Therefore, it becomes possible to easily and accurately acquire the degree of mutual influence on the irradiated surface brightness of the plurality of irradiated sections 5-1 to 5-m from the plurality of lighting fixture groups 6-1 to 6-n. .

  From another viewpoint, it is possible to confirm whether or not the initial grouping (group setting) for the lighting fixtures 4-1 to 4-z is appropriate from the overall contribution rate. For example, when the contribution ratio by the lighting fixture group 6-j corresponding to the irradiated section 5-j is the highest, it can be said that the grouping is appropriate. On the other hand, when the contribution rate by the lighting fixture group 6-j is low with respect to the irradiated section 5-j and the correlation between the two is low, the grouping may not be appropriate. In this way, it is possible to determine whether the lighting fixture group 6 is properly grouped based on the processing result of the contribution rate calculation unit 305. In addition, the grouping process of the lighting fixture 4 is mentioned later.

In the present embodiment, the CPU 30 further includes a dimming rate determination unit 306. The dimming rate determination unit 306 sets R = C ⁻¹ L for the luminance contribution rate matrix C, the dimming rate matrix R of each lighting fixture group 6, and the given luminance setting matrix L of each irradiated section 5. The light control rate matrix R is determined by calculation, and the lighting control unit 301 performs light control of each lighting fixture group 6 according to the light control rate matrix R. Thereby, appropriate dimming control is realized even in the complex correlation of the luminance given from the plurality of lighting fixture groups 6 to the plurality of irradiated sections 5.

<Second Embodiment>
In the first embodiment, the configuration in which the calculation of the contribution rate and the determination of the dimming rate are performed on the assumption that the initial group setting is appropriate. It may be determined that the group setting is not appropriate. In the present embodiment, in order to prevent an inappropriate group setting from being constructed or to reconstruct a group setting when it is determined that the grouping is not appropriate, a grouping process is performed before the above-described contribution ratio calculation. Shows the configuration.

  Inappropriate group setting can occur mainly when manual grouping is performed (ie, the operator compares the design drawing with the situation at the site). As an example in which the group setting is not appropriate, for example, in the irradiated section 5-j, the illumination that should correspond to the irradiated section 5- (j + 1) rather than the contribution ratio of the lighting fixture group 6-j corresponding to the irradiated section A case where the contribution ratio of the appliance group 6- (j + 1) is high is exemplified. In this case, it is desirable to reconsider the grouping of the lighting fixture groups 6-j and 6- (j + 1). Further, as an example in which the group setting is not appropriate, there is a case where there is no great difference in the contribution ratio of each lighting fixture group 6 in almost all irradiated sections 5. As a cause of this, there is a possibility that the arrangement direction of the irradiated sections 5 and the arrangement direction of the lighting fixture groups 6 are misidentified in the east-west direction and the north-south direction of the room. This is an error that may occur when an operator misidentifies the relationship between the vertical and horizontal directions of the design drawing and the direction of the room for a room having a substantially square floor surface. Therefore, a configuration for obtaining an appropriate group setting is shown below.

  FIG. 4 shows a block diagram of the illumination control system 1 of the present embodiment. Constituent elements similar to those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. In the present embodiment, the CPU 30 includes a luminance center specifying unit 303 and a grouping unit 304 in addition to the setting management unit 300, the lighting control unit 301, the luminance distribution acquisition unit 302, the contribution rate calculation unit 305, and the dimming rate determination unit 306. Including. In the present embodiment, the luminance distribution acquisition unit 302 is configured to acquire a luminance distribution D1 when the selected lighting fixture 4 is turned on and a luminance distribution D0 when the selected lighting fixture 4 is turned off.

  The luminance center specifying unit 303 obtains the luminance center position for each of the lighting fixtures 4 based on the difference in luminance distribution with respect to the change in brightness. Specifically, the luminance center specifying unit 303 acquires the difference (D1−D0) between the luminance distribution D1 when the light is on and the luminance distribution D0 when the light is off, and uses the coordinates of the barycentric position in the difference area as the luminance center position. Identify. As a result, the luminance center position can be obtained accurately with a small number of processing steps. In addition to the luminance center of gravity, the coordinates of the point with the largest luminance difference may be adopted as the luminance center position.

The grouping unit 304 identifies which irradiated section of the irradiated sections 5-1 to 5-m the luminance center position (in this example, the luminance centroid) is included, and the luminance included in the same irradiated section 5 The lighting fixtures 4 having the central position are grouped into the same lighting fixture group 6. The grouping unit 304 does not perform the grouping process for the lighting fixture 4 whose luminance center of gravity is not included in any of the irradiated sections 5-1 to 5-m (hereinafter, referred to as “lighting fixture 4 _out ”). The process of avoiding the grouping of the lighting fixtures 4 _out further increases the correlation between the lighting fixture groups 6-1 to 6-n and the irradiated sections 5-1 to 5-n.

  Processing by the lighting control unit 301, the luminance distribution acquisition unit 302, the luminance center specifying unit 303, and the grouping unit 304 will be described with reference to FIGS. 5A and 5B. 5A and 5B are part of the display screen 325 of the user I / F 32, or may be virtual screens in the CPU 30 that are not actually displayed on the display screen 325. It is assumed that the partition setting has already been read by the setting management unit 300. In the present embodiment, the partition setting is newly determined when the user sets the boundary line of each partition via the input unit 320 of the user I / F 32 in the irradiated surface image captured by the imaging device 2. It may be a proper setting.

  First, the luminance distribution acquisition unit 302 acquires the luminance distribution D1 of the irradiated surface from the imaging device 2 in a state where the lighting control unit 301 lights the lighting fixture 4-1. In addition, the luminance distribution acquisition unit 302 acquires the luminance distribution D0 of the irradiated surface from the imaging device 2 in a state where the lighting control unit 301 turns off the lighting fixture 4-1. The luminance center specifying unit 303 subtracts the luminance distribution D0 from the luminance distribution D1 to obtain a difference (D1-D0), and obtains a difference image Df-1 as shown in FIG. 5A. In the difference image Df-1, shading appears according to the luminance difference. Specifically, a portion where the absolute value of the luminance difference is large (region A-1) is a light color (for example, white), and a portion where the luminance difference is small (portion other than the region A-1) is dark (for example, black). It becomes. And the brightness | luminance center specific | specification part 303 specifies the gravity center of area | region A1 in which the difference of the brightness | luminance has arisen in FIG. 5A as the brightness | luminance gravity center G-1. The luminance centroid in the difference image is calculated based on the coordinates and light color level of each grid constituting the difference image. As shown in FIG. 5A, the luminance gravity center G-1 is included in the irradiated section 5-2. Therefore, the grouping unit 304 groups the lighting fixtures 4-1 into the lighting fixture group 6-2 associated with the irradiated section 5-2.

  Subsequently, the lighting control unit 301 selects and turns on and off the lighting fixture 4-2, as in the case of the lighting fixture 4-1. Assume that a difference image Df-2 shown in FIG. 5B is obtained based on the luminance distribution obtained by this blinking. The luminance center specifying unit 303 specifies the centroid of the region A-2 where the luminance difference is occurring as the luminance centroid G-2. As shown in FIG. 5B, the luminance gravity center G-2 specified by the luminance center specifying unit 303 is not included in any of the irradiated sections 5-1 to 5-3. In such a case, the grouping unit 304 does not group the lighting fixtures 4-2 into any lighting fixture group. This further increases the correlation between the irradiated sections 5-1 to 5-3 and the corresponding lighting fixture groups 6-1 to 6-3.

  Note that the remaining lighting fixtures other than the lighting fixture 4 to be turned on and off may be in any lighting control state as long as the brightness is constant during the turning on and off. The lighting control unit 301 may change the brightness from the first brightness to the second brightness by dimming instead of turning on and off the selected lighting fixture 4. That is, in the lighting fixture 4 to be controlled, the dimming rate at the time of obtaining the luminance distribution D1 only needs to be different from the dimming rate at the time of obtaining the luminance distribution D0.

  The lighting control unit 301, the luminance distribution acquisition unit 302, the luminance center specifying unit 303, and the grouping unit 304 are configured to select all of the lighting fixtures 4-1 to 4 -z or a specific problem in the selected section setting. The above grouping process is executed only for the lighting fixtures 4 included in the lighting fixture group. As a result, lighting fixture groups 6-1 to 6-n corresponding to the irradiated zones 5-1 to 5-m are formed for each zone setting, and the correspondence between each of the lighting fixture groups 6 and the lighting fixture 4 is stored. Stored in the unit 31. Further, the coordinates of the luminance centers of gravity G-1 to Gz of the lighting fixtures 4-1 to 4-z may also be stored in the storage unit 31.

Thereby, the appropriate group setting by the lighting fixture groups 6-1 to 6-n is constructed or reconstructed. The lighting fixtures 4 _out that have not been grouped can be turned on, turned off, and dimmed by the individual control function of the lighting control unit 301.

FIG. 6 shows a flowchart regarding the grouping process of the lighting control method according to the present embodiment (when the grouping process is performed for all the lighting fixtures 4).
In step S5, the partition setting is determined by the setting management unit 300 based on the user input via the user I / F 32.
In step S9, i = 1 is set for the lighting fixture 4-i.

In step S10, the lighting control unit 301 lights the lighting fixture 4-i.
In step S <b> 11, the luminance distribution acquisition unit 302 acquires the luminance distribution D <b> 1 of the entire irradiated surface of the irradiated sections 5-1 to 5-m from the imaging device 2.

In step S15, the lighting control unit 301 turns off the lighting fixture 4-i.
In step S <b> 16, the luminance distribution acquisition unit 302 acquires the luminance distribution D <b> 0 of the entire irradiated surface of the irradiated sections 5-1 to 5-m from the imaging device 2.
In the case of a control method in which the lighting fixtures 4-i are turned on / off in a state where all the lighting fixtures 4 other than the lighting fixtures 4-i are turned off, the lighting control unit 301 is replaced with steps S15 and S16. Step S7 for turning off all the luminaires 4 and step S8 for the luminance distribution acquisition unit 302 to acquire the luminance distribution D0 may be provided between step S5 and step S9.

  In step S20, the luminance center specifying unit 303 obtains the luminance centroid G-i by the luminaire 4-i based on the difference (D1-D0) between the luminance distribution D1 and the luminance distribution D0.

In step S <b> 25, the grouping unit 304 specifies which irradiated section of the irradiated sections 5-1 to 5-m includes the luminance center of gravity Gi.
In step S26, the grouping unit 304 groups the lighting fixtures 4-i into the lighting fixture group 6 corresponding to the irradiated section 5 including the luminance center of gravity G-i of the lighting fixtures 4-i. Here, the grouping unit 304 does not group the lighting fixtures 4 _out whose luminance center of gravity Gi is not included in any of the irradiated sections 5-1 to 5-m into any lighting fixture group.

  In step S30, it is determined whether or not grouping has been completed for all the lighting fixtures 4-z. If it is determined that all the groupings have been completed (step S30, Yes), the process ends. Otherwise (step S30, No), i is incremented in step S31, and the process returns to step S10.

  Information (luminance centroid Gi, grouping result, etc.) obtained in each of the above steps is appropriately stored in the storage unit 31 in each step. If the luminance centers of gravity G-1 to Gz of the lighting fixtures 4-1 to 4-z are stored in the storage unit 31, even if a new partition setting is determined or selected, the new partition In the grouping process for the setting, the above steps S6 to S20 can be omitted.

  In addition, a part or all of the processing results of the above steps are output to the display screen 325 of the user I / F 32 sequentially or collectively. This display may be a graphic display in which information such as the irradiated section 5 and the luminance gravity center position is overwritten on the irradiated surface image, or a text display in which the above information is represented by a table or a numerical value. May be.

  As described above, in the lighting control system 1 of the present embodiment, the lighting control unit 301 changes the brightness of each of the lighting fixtures 4-1 to 4-z included in the lighting fixture groups 6-1 to 6-n. Configured to let Then, for each of the lighting fixtures 4-1 to 4-z, the CPU 30 obtains the luminance center position based on the difference in luminance distribution with respect to the change in brightness, and the luminance center position is the irradiated section 5. A grouping unit 304 that identifies which irradiated section among -1 to 5-m is included, and groups the luminaires 4 having the luminance center position included in the same irradiated section into the same luminaire group 6 Including. Thereby, the appropriate group setting of the lighting fixture group 6 is obtained. In other words, it is possible to accurately and efficiently obtain the correspondence between the plurality of lighting fixtures 4 and the brightness of the irradiated surface (floor surface F) of the plurality of irradiated sections 5, and the introduction of the lighting control system 1. Increases ease.

<Third Embodiment>
In the first embodiment, the configuration in which the dimming control is performed according to the dimming rate matrix R determined for the given luminance setting matrix L is shown. In the present embodiment, the adjustment of the luminance setting matrix L is performed. A configuration in which the dimming control is performed while the dimming rate matrix R is recalculated according to FIG. In the present embodiment, the control device 3 is a mobile communication terminal such as a tablet or a smartphone, and a user having the control device 3 adjusts (re-adjusts) the luminance distribution in the field (in the illumination space S or on the floor surface F). A situation is envisaged. Therefore, communication between the communication unit 21 of the imaging device 2 and the reception unit 33 of the control device 3 and communication between the transmission unit 34 and each lighting fixture 4 are configured by wireless communication.

  FIG. 7 shows a block diagram of the illumination control system 1 of the present embodiment. In the present embodiment, the same reference numerals are given to the same elements as those in each of the above-described embodiments, and redundant description is omitted. The illumination control system 1 of the present embodiment is different from the illumination control system 1 of the first embodiment in that the CPU 30 includes a brightness adjustment execution unit 307. The display screen 325 of the user I / F 32 is a touch panel having an input / output function, and also serves as the input unit 320. Note that the CPU 30 may include a luminance center specifying unit 303 and a grouping unit 304 as in the second embodiment.

  The luminance adjustment execution unit 307 receives a user input from the user I / F 32 when the lighting control unit 301 performs the dimming of each lighting control group 6 according to the dimming rate determined by the dimming rate determination unit 306. Accordingly, a luminance adjustment mode for adjusting the luminance distribution is applied. At the time of applying the brightness adjustment mode, the brightness adjustment execution unit 307 displays the adjustment mode screen W for brightness adjustment on the display screen 325 and sets the brightness of the predetermined irradiated section 5 according to the user input from the adjustment mode screen W. Adjust (correct) the value. The dimming rate determining unit 306 recalculates the dimming rate of each lighting fixture group 6 according to the corrected brightness setting value, and the lighting control unit 301 determines each lighting fixture group 6 according to the recalculated dimming rate. Dimming control. In addition, the luminance adjustment execution unit 307 updates the adjustment mode screen W according to the corrected luminance distribution or dimming rate.

On the adjustment mode screen W, one or more of the following display elements are selectively displayed in real time, and when two or more display elements are selected, they are displayed in an overlapping manner.
(1) A captured image I of the floor surface F by the imaging device 2
For example, in the captured image I, when the lighting space S is an office, a desk, a chair, a shelf, a partition, a person (user), etc., and when the lighting space S is a gymnasium, a court line, stage, audience seats, players, Audience etc. may be included.
(2) Display of each irradiated section 5 For example, the boundary line of each irradiated section 5 is represented by a solid line, a broken line, or a dotted line. When the captured image I is displayed, this boundary line is displayed superimposed on the front surface.
(3) Color display or light / dark display of the brightness setting value of each irradiated section 5 For example, the irradiated section 5 having a high brightness setting value currently being displayed is displayed in a warm color or a light color, and the brightness setting value currently being executed. The irradiated section 5 having a low value is displayed in a cold color or a dark color. When the captured image I is displayed, this color display or light / dark display is preferably displayed in a semi-transparent color on the front surface.
(4) Color display or shading display of dimming rate of each lighting fixture group 6 For example, the irradiated section 5 corresponding to the lighting fixture group 6 having a high dimming rate currently being executed is displayed in a warm color or a light color. The irradiated section 5 corresponding to the luminaire group 6 with a low dimming rate being executed is displayed in a cold or dark color. When the captured image I is displayed, this color display or light / dark display is preferably displayed in a semi-transparent color on the front surface. The display element and the display element (3) are not displayed at the same time.
(5) Display of luminance center position (center of gravity position) of each luminaire 4 For example, the centroid position of each luminaire 4 is displayed with a “+” mark. This display is preferably superimposed on the foreground in consideration of an overhead image of the adjustment mode screen W.
(6) Numerical display of brightness setting value of each irradiated section 5 (% or cd / m ² )
For example, the currently executed brightness setting value is displayed numerically in each irradiated section 5. This numerical display may be displayed outside the imaging screen as a table, a matrix or the like.
(7) Numerical display of dimming rate for each lighting fixture group 6 (%)
For example, the dimming rate currently being executed in each corresponding lighting fixture group 6 is numerically displayed in each irradiated section 5. This numerical display may be displayed outside the imaging screen as a table, a matrix or the like.

  FIG. 8 is a schematic diagram of an example of the adjustment mode screen W. In the example shown in FIG. 8, (1) the captured image I, (2) broken line display of each irradiated section 5, and (3) gradation display of the brightness setting value are displayed. That is, the captured image I, the irradiated sections 5-1 to 5-m (m = 3 in this example), and the brightness setting shade display (semi-transparent color) are displayed in layers from the rearmost surface. As shown in the drawing, the luminance of the irradiated section 5-2 is the highest and the luminance of the irradiated section 5-3 is the lowest. The captured image I includes a user U who adjusts the luminance distribution on the floor surface F with the control device 3.

Here, the user U selects, for example, the irradiated section 5-3 as an adjustment target, and pinches out (for example, an index finger) to a point (selected point) corresponding to the irradiated section 5-3 on the adjustment mode screen W. And the thumb touch the two points on the touch panel to increase the distance between the two points). The brightness adjustment execution unit 307 detects, in cooperation with the display screen 325, that the irradiated section to which the selected point belongs is the irradiated section 5-3 and that the touch operation is a pinch out, and the luminance setting matrix L element L ₃ of increased to produce a modified brightness matrix Lc with. Here, the irradiated section 5 to which the selected point belongs may be defined as the irradiated section 5 including two points of contact at the start of pinch out, or includes the midpoint of the two points of contact at the start of pinch out. It may be defined as the irradiated section 5 to be irradiated. Then, the dimming rate determining unit 306 executes R = C ⁻¹ Lc and recalculates the dimming rate matrix R, and the lighting control unit 301 performs the lighting fixture group 6− according to the recalculated dimming rate matrix R. Dimming control is performed on 1-6-n. Thereby, the dimming rate of the lighting fixture group 6-3 is increased, the luminance of the irradiated section 5-3 is increased, the dimming rate of the lighting fixture group 6-2 is slightly reduced, and the lighting fixture group 6- 6 is reduced. The dimming rate of 1 is slightly reduced, and the brightness of the irradiated sections 5-1 and 5-2 is maintained.

Conversely, the user U selects, for example, the irradiated section 5-2 as an adjustment target, and pinches in (for example, an index finger and a thumb on the touch panel with respect to the selected position of the irradiated section 5-2 on the adjustment mode screen W). 2), an operation of decreasing the distance between the two points is performed. The brightness adjustment execution unit 307 detects, in cooperation with the display screen 325, that the irradiated section to which the selected point belongs is the irradiated section 5-2 and that the touch operation is a pinch-in. the element L ₂ is reduced to produce a modified brightness matrix Lc with. The irradiated section 5 to which the selected point belongs may be defined as the irradiated section 5 including two points of contact at the start or end of pinch-in, or the midpoint of the two points of contact at the start or end of pinch-in It may be defined as the irradiated section 5 included. Then, the dimming rate determining unit 306 executes R = C ⁻¹ Lc and recalculates the dimming rate matrix R, and the lighting control unit 301 performs the lighting fixture group 6− according to the recalculated dimming rate matrix R. Dimming control is performed on 1-6-n. Thereby, the dimming rate of the lighting fixture group 6-2 is reduced, the brightness of the irradiated section 5-2 is lowered, and the dimming rates of the lighting fixture groups 6-1 and 6-3 are slightly increased to be irradiated. The brightness of the sections 5-1 and 5-3 is maintained.

  Here, in the brightness adjustment execution unit 307, the increase / decrease of the brightness setting value due to pinch-out / pinch-in depends on the magnitude of each operation (the magnitude of the change in the distance between two touch points before and after the pinch-out / pinch-in). Depending on the speed of each operation (speed of change in distance between two points of contact during pinch-out / pinch-in) or acceleration of each operation (acceleration of change in distance between two points of contact during pinch-out / pinch-in) It may be determined according to the above. In the adjustment mode screen W, it is assumed that the irradiated section 5 is not displayed in an enlarged / reduced manner even if pinch-out / pinch-in is performed.

  As described above, the user increases the brightness of the irradiated section 5-j in an intuitive manner by pinching out / pinch-in the selected point of the irradiated section 5-j to be adjusted on the adjustment mode screen W. In addition, the luminance distribution of the entire irradiated area can be adjusted in a real-time manner. In particular, it is easy for the user to intuitively match the operation of expanding the finger in the pinch-out operation with the process of brightening the irradiated section 5-j related to the operation and further expanding the influence of the brightness. Similarly, the pinch-in operation The operation of narrowing the finger and the process of darkening the irradiated section 5-j related to the operation and narrowing the influence of the brightness are intuitively matched easily, and the intuition of the brightness adjustment operation is enhanced.

Further, as an alternative example of the touch operation on the adjustment mode screen W, flicking in the vertical direction of the screen (operation to lightly touch the finger touching the touch panel) or swipe (operation to move the finger touching the touch panel) is used. May be. In this case, the luminance adjustment execution unit 307 increases the element L _j of the luminance setting matrix L when the upward flick or swipe is performed on the selected point of the irradiated section 5-j, and the irradiated section 5- When a downward flick or swipe is performed on the selected point of j, the element L _j of the luminance setting matrix L is decreased.

Alternatively, on the adjustment mode screen W, buttons indicating an upward arrow and a downward arrow may be displayed for each section setting 5. In this case, the brightness adjustment execution unit 307 raises the element L _j of the brightness setting matrix L when the user touches (long press, tap, etc.) the upward arrow button, and the user touches the downward arrow button. In the case of (long press, tap, etc.), the element L _j of the luminance setting matrix L is decreased. Further, instead of the up arrow and down arrow buttons, buttons in which characters such as “bright”, “dark”, “UP”, and “DOWN” are entered may be displayed.

  In any user operation, the dimming rate determination unit 306 determines that any element of the recalculated dimming rate matrix R is a negative value or exceeds 100%, as in the case of the first embodiment. Similarly, a negative value element is replaced with 0%, and an element exceeding 100% is replaced with 100%. Thereby, even if the brightness setting to be readjusted cannot be realized completely, a brightness distribution reflecting the intention of readjustment to some extent is realized. In addition, it is preferable that the dimming rate determination unit 306 notifies the user that the replacement process has been performed by an output unit (a display screen 325, a separate speaker, or the like) of the user I / F 32. As a result, the user can recognize that the brightness setting being readjusted is at the adjustment limit. Alternatively, based on the fact that 0% or 100% is included in the recalculated dimming rate, the user can infer that the replacement process has been performed (even if there is no notification).

  Furthermore, the dimming rate determination unit 306 generates an approximate dimming rate matrix R ′ obtained by performing the above replacement process on the dimming rate matrix R, and calculates the approximate modified luminance matrix Lc ′ by Lc ′ = CR ′. It may be. Each element of the approximate corrected luminance matrix Lc ′ based on the calculation result may be overwritten on each element of the corrected luminance matrix Lc and stored in the storage unit 31 or notified to the user via the user I / F 32. You may be made to do.

As described above, in the illumination control system 1 according to the present embodiment, the display screen 325 includes a touch panel, and the CPU 30 includes the luminance adjustment execution unit 307. The luminance adjustment execution unit 307 corrects the luminance setting value L _j of the selected irradiated section 5-j in the luminance setting matrix L in response to a touch operation on a point belonging to the selected irradiated section 5-j on the touch panel. The modified luminance matrix Lc is generated, the dimming rate determining unit 306 recalculates the dimming rate matrix R by R = C ⁻¹ Lc, and the lighting control unit 301 performs illumination according to the recalculated dimming rate matrix R. The device groups 6-1 to 6-n are configured to perform dimming control. Thereby, the user can increase / decrease the luminance of the selected irradiated section 5-j intuitively and adjust the luminance distribution of the entire irradiated area in a real-time manner.

<Fourth Embodiment>
In the first to third embodiments, the configuration in which the control device 3 and the imaging device 2 are separated is shown. However, in this embodiment, most components of the control device such as the CPU 30 are integrated with the imaging device 2. The configuration to be converted is shown.

  FIG. 9 shows a block diagram of the illumination control system 1 of the present embodiment. In the present embodiment, substantially the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted. As shown in FIG. 9, the control device 3 includes a control device 3A on the ceiling Ce side and a control device 3B on the operation side, and includes a CPU 30A (main CPU) and a CPU 30B (sub CPU), respectively. Although the communication configuration of the present embodiment is different from that of the first and second embodiments, the processing executed by the CPUs 30A and 30B is substantially the same as the processing executed by the CPU 30.

  In the present embodiment, the CPU 30A includes the setting management unit 300, the lighting control unit 301, the luminance distribution acquisition unit 302, the luminance center specifying unit 303, and the grouping unit 304 (the contribution rate calculating unit 305 and the dimming rate as necessary). The sub CPU 30B will be described as including the brightness adjustment execution unit 307 described above. However, the division of functions between the CPU 30A and the CPU 30B is not limited to this. For example, the CPU 30A may include a part of the lighting control unit 301 to the dimming rate determination unit 307, and the CPU 30B may include the remaining part. The CPUs 30A and 30B both include a general processing unit for processing programs and data.

  The control device 3A includes a CPU 30A, a storage unit 31, a transmission unit 34, and a communication unit 35, and is integrated with the imaging device 2. Signal exchange between the imaging device 2 (imaging element 20) and the control device 3A (CPU 30A) is performed through an appropriate interface.

  The control device 3B includes a user I / F unit 32, a communication unit 36, a CPU 30B, and a storage unit 37. The control device 3B is provided in a place that can be operated by the user, such as a management room separate from the illumination space S, or on the floor inside and outside the illumination space S. Shall be located. The storage unit 37 is a memory that stores programs and data, and may be a copy of the storage unit 31.

  The transmission part 34 of 3 A of control apparatuses transmits the lighting control signal from CPU30A (lighting control part 301) to each lighting fixture 4 similarly to 1st Embodiment. The communication unit 35 of the control device 3A is wirelessly connected to the communication unit 36 of the control device 3B. From the communication unit 35 to the communication unit 36, a captured image by the imaging device 2, a control result by the CPU 30A, and the like are transmitted. The control results by the CPU 30A include the lighting device group 6 grouping results described above, the calculation result of the contribution ratio of the illuminated surface brightness, the dimming rate determined for each lighting device group 6, and the like. A user input via the user I / F 32 is transmitted from the communication unit 36 to the communication unit 35. The user input includes an input for selecting a partition setting, a group setting, or a luminance setting, a command for manually lighting, turning off, or dimming the lighting fixture 4 or the lighting fixture group 6.

  As described above, in the illumination control system 1 of the present embodiment, the CPU 30A including all or a part of each part of the CPU 30 of the first to third embodiments is integrated with the imaging device 2. Thereby, the apparatus which should be installed on the ground side, such as a management room, is reduced in size, and the space can be used effectively. Further, since the control device 3B does not require a large amount of processing and storage, it can be configured with a personal computer, a portable communication terminal, or the like having a relatively small memory capacity. Furthermore, since a wired communication configuration is not required between the control device 3A and the imaging device 2, and the control device 3B, the control device 3B can be a portable computer such as a tablet or a smartphone. Therefore, this embodiment is useful in the implementation of the third embodiment.

  Further, by integrating the control device 3A having the CPU 30A with the imaging device 2, the communication wiring for the lighting control signal between the transmission unit 34 and each lighting fixture 4 is arranged only on the ceiling Ce side, and the ground Communication wiring between the management room and the ceiling side becomes unnecessary. Thereby, the construction ease of the illumination control system 1 increases. Moreover, when the transmission part 34 and each lighting fixture 4 are wirelessly connected, possibility that communication will be interrupted | blocked by an obstruction reduces, and a communication environment improves.

<Programs>
In addition, each component which implement | achieves the illumination control system 1 (CPU30, 30A, 30B) in each embodiment mentioned above, and each step of a process operate | moves the program memorize | stored in RAM or ROM of the memory | storage part 31 or 37, etc. It is realized by doing.

  In the present invention, a software program (a program corresponding to the flowchart shown in FIG. 3 or FIG. 6) that realizes the functions of the above-described embodiments is directly applied to the lighting control system 1 (CPUs 30, 30A, 30B) or This includes cases where it is supplied remotely. Therefore, the program code itself installed in the illumination control system 1 (CPU 30, 30A, 30B) in order to realize the functional processing of the present invention is also included in the present invention. That is, the present invention includes a computer program for realizing the functional processing of the present invention. The program includes the above-described setting management unit 300, lighting control unit 301, luminance distribution acquisition unit 302, luminance center specifying unit 303, grouping unit 304, contribution rate calculation unit 305, dimming rate determination unit 306, and luminance adjustment. It can function as all or part of the execution unit 307. As described above, according to the present invention, the operational effects as shown in the above-described embodiment can be realized by the introduction of software, so that the ease of introduction of the illumination control system 1 can be improved.

  The program may be downloaded from the Internet. In this case, the computer program or the compressed file including the automatic installation function is downloaded from the home page to the lighting control system 1 connected to the home page on the Internet by the browser function.

  A computer-readable storage medium storing the above program is also included in the present invention. When the program is supplied by a storage medium, the storage medium may be a flexible disk, hard disk, optical disk, magneto-optical disk, etc. MO, CD-ROM, CD-R, CD-RW, magnetic tape, non-volatile May be a memory card, ROM, DVD (DVD-ROM, DVD-R) or the like.

<Modification>
Although preferred embodiments of the present invention have been described above, the present invention can be modified into various modes as shown below, for example.

  For example, in each of the above embodiments, the configuration in which the installation surface of the imaging device 2 and the lighting fixture 4 is the ceiling Ce and the irradiated surface is the floor surface F below the ceiling Ce is shown. Other arrangements may be used as long as the installation surface 4 and the irradiated surface are in a facing relationship. For example, the irradiated surface may be inclined with respect to the installation surface of the imaging device 2 and the lighting fixture 4, or the irradiated surface is above the installation surface of the imaging device 2 and the lighting fixture 4 as in a light-up situation. May be.

の行列として生成し、輝度設定行列Ｌの各要素を輝度値（ｃｄ／ｍ^２）として、調光率決定部３０６が、所与の輝度設定行列Ｌに対して、調光率行列Ｒを、Ｒ＝Ｖ^−１Ｌによって決定する構成も可能である。 Moreover, in each said embodiment, the structure which each element of the contribution rate matrix C and the brightness | luminance setting matrix L was a ratio (unit:%) was shown. On the other hand, the contribution rate calculation unit 305 calculates the luminance values V _{(1, 1) to} V _{(n, m)} (cd / m ² )

And the dimming rate determination unit 306 sets the dimming rate matrix R for the given luminance setting matrix L as the luminance value (cd / m ² ). The structure determined by R = V < ^-1 > L is also possible.

  In each of the above embodiments, when the dimming rate matrix R includes an element exceeding 100%, the element is replaced with 100%. On the other hand, in the range where the current value in the light source and lighting device of the luminaire 4 is less than or equal to the respective rated values, the dimming of elements of 100% to 100 + α% of the dimming rate matrix R is performed as it is, When the dimming rate matrix R includes an element exceeding 100 + α%, the element may be replaced with 100 + α%. However, it is necessary to pay sufficient attention to the life of the light source.

DESCRIPTION OF SYMBOLS 1 Illumination control system 2 Imaging device 3, 3A, 3B Control device 4, 4-1 to 4-z Lighting fixture 5, 5-1 to 5-m Irradiated section 6, 6-1 to 6-n Lighting fixture group 30 , 30A, 30B CPU
32 User interface (User I / F)
300 Setting management unit 301 Lighting control unit 302 Luminance distribution acquisition unit 303 Luminance center identification unit 304 Grouping unit 305 Contribution rate calculation unit 306 Dimming rate determination unit 307 Luminance adjustment execution unit 325 Display screen

Claims (13)

A lighting control system,
An imaging device for imaging the entire irradiated surface including the first to mth (2 ≦ m) irradiated sections and generating an irradiated surface image;
A lighting control unit that turns on and off each of the first to nth (n = m) lighting fixture groups each including one or more lighting fixtures, and obtains the luminance distribution of the illuminated surface from the illuminated surface image. luminance distribution acquisition unit, and the k (1 ≦ k ≦ n) luminance values in the irradiated sections of the first to m in a state where the luminaire groups remaining is turned off with the luminaire groups are lit V _{( k, 1) to} V _{(k, m)} are calculated, and the contribution ratio C _{(k, j} ) of the irradiated surface luminance received by the jth (1 ≦ j ≦ m) irradiated section from the kth lighting fixture group. ₎

A lighting control system including a CPU having a contribution rate calculation unit for calculating as follows. The lighting control system according to claim 1.
The contribution ratio C _{(1,1) to} C _{(n, m)} of the irradiated surface luminance from the first to nth lighting fixture groups to the first to mth irradiated sections is:

The luminance setting values L _{1 to} L _m of the _{first to m-th} irradiated sections are represented by the following matrix:

The dimming rates R _{1 to} R _n of each of the first to nth luminaire groups are represented by:

Is represented by the matrix
The illumination control system, wherein the CPU further includes a dimming rate determination unit that determines the matrix R by R = C ⁻¹ L.   The lighting control system according to claim 2, wherein when the unit of the dimming rate is%, the dimming rate determining unit includes a negative value element in the dimming rate matrix R. A lighting control system configured to replace an element with 0% and replace the element with 100% when there is an element exceeding 100% in the matrix R of dimming rate. In the lighting control system according to any one of claims 1 to 3,
The lighting control unit is configured to change the brightness of each of the lighting fixtures included in the first to nth lighting fixture groups,
For each of the lighting fixtures, the CPU determines a luminance center position based on a difference in the luminance distribution with respect to a change in brightness, and the luminance center position is the first to mth irradiated sections. The illumination control system includes a grouping unit that identifies which of the irradiated sections is included and groups the lighting apparatuses having the luminance center position included in the same irradiated section into the same lighting apparatus group.   5. The lighting control system according to claim 4, wherein the grouping unit includes a lighting device in which the luminance center position is not included in any of the first to mth irradiated sections. A lighting control system configured not to be grouped into any of the n th lighting fixture groups. In the lighting control system according to claim 4 or 5,
The lighting control unit turns on and off the selected lighting fixture among the lighting fixtures,
The luminance center specifying unit obtains a difference between the luminance distribution when the selected lighting fixture is turned on and the luminance distribution when the selected lighting fixture is turned off in the luminance distribution of the irradiated surface, and the center of gravity position in the difference is determined as the luminance center position A lighting control system configured to identify as. The illumination control system according to claim 2 or 3,
A display screen comprising a touch panel is further provided.
The CPU corrects and corrects the luminance setting value of the selected irradiated section in the luminance setting matrix L in response to a touch operation on a spot belonging to the selected irradiated section on the touch panel. A luminance adjustment execution unit for generating a luminance matrix Lc;
The dimming rate determining unit recalculates the dimming rate matrix R by R = C ⁻¹ Lc, and the lighting control unit performs the first to nth illuminations according to the recalculated dimming rate matrix R. A lighting control system configured to dimm and control an instrument group.   8. The illumination control system according to claim 7, wherein the brightness adjustment execution unit increases a brightness setting value of the selected irradiated section when the touch operation is a pinch out, and when the touch operation is a pinch in. A lighting control system configured to decrease a luminance setting value of the selected irradiated section.   The illumination control system according to any one of claims 1 to 8, wherein a main CPU including all or a part of each part of the CPU is integrated with the imaging device.   The program for functioning a computer as each part with which the illumination control system as described in any one of Claim 1 to 9 is provided.   A computer-readable storage medium in which the program according to claim 10 is stored. An illumination control method in an illumination control system having an imaging device and a CPU,
The CPU turns on the kth (1 ≦ k ≦ n) lighting fixture groups of the first to nth lighting fixture groups and turns off the remaining lighting fixture groups;
The imaging device images the entire irradiated surface including the first to m-th irradiated sections, and the CPU acquires the luminance distribution of the entire irradiated surface;
The CPU calculating luminance values V _{(k, 1) to} V _{(k, m)} for each of the first to m-th irradiated sections in the luminance distribution;
The CPU calculates the contribution ratio C _{(k, j)} of the irradiated surface luminance received by the jth (1 ≦ j ≦ m) irradiated section from the kth lighting fixture group.

A lighting control method comprising the steps of: A lighting control method according to claim 12,
The contribution ratio C _{(1,1) to} C _{(n, m)} of the irradiated surface luminance from the first to nth lighting fixture groups to the first to mth irradiated sections is:

The luminance setting values L _{1 to} L _m of the _{first to m-th} irradiated sections are represented by the following matrix:

The dimming rates R _{1 to} R _n of each of the first to nth luminaire groups are represented by:

Is represented by the matrix
The illumination control method further comprising the step of the CPU determining the matrix R by R = C ⁻¹ L.

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