JP6421706B2 - Lighting control system, lighting control program, and lighting control method - Google Patents

Description

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

  Patent Document 1 discloses an identification device that identifies a light emitting device specified by an installation position and a light emitting device specified by identification information. The identification device includes a control unit, an imaging unit, and an identification unit. The control unit individually controls lighting / light-off of the plurality of light emitting devices via the network, using identification information of each of the plurality of light emitting devices installed in the space. The imaging unit is arranged such that the image sensor surface is parallel to the vertical direction (that is, the imaging direction is directed to the horizontal direction), and the light emitting device is imaged in time series in the space to obtain time-series captured images. . The identification unit identifies the installation positions of each of the plurality of light emitting devices using the control content of turning on / off the plurality of light emitting devices and the time-series captured images, and the plurality of light emitting devices identified at the plurality of installation positions Each and each of the plurality of light emitting devices specified by the plurality of identification information are identified.

JP 2014-086149 A

  By the way, in an actual lighting space (office, gymnasium, etc.), while many lighting fixtures are installed, the irradiated area on the floor side can also be divided into many irradiated sections. And the illuminance distribution on each lighting fixture side on the ceiling surface of the lighting space and the luminance distribution in the irradiated area on the floor surface are not necessarily the same due to the light distribution of the lighting fixture, the material of the floor surface, etc. Absent. Therefore, when obtaining the luminance distribution of each irradiated section in an illumination space where there are a large number of lighting fixtures and a number of irradiated sections, the illuminance, light distribution characteristics, state of the irradiated portion, etc. There is a need to consider. However, acquiring the luminance distribution using such many factors as input elements requires a lot of labor and complicated calculations, and the ease of introducing the lighting control system is impaired. Therefore, in the illumination space, a configuration that accurately and efficiently obtains the correspondence between each of a large number of luminaires and the floor brightness in each of a plurality of irradiated sections is desired.

  Accordingly, the present invention provides a lighting control system, program, and method with high ease of introduction that makes it possible to accurately and efficiently acquire a correspondence relationship between a plurality of lighting fixtures and irradiated surface brightness of a plurality of irradiated sections. It is an issue to provide.

  An illumination control system of the present invention includes an imaging device for imaging an entire irradiated surface including a plurality of irradiated sections and generating an irradiated surface image, and lighting for changing the brightness of each of the plurality of lighting fixtures Control unit, luminance distribution acquisition unit for acquiring the luminance distribution of the irradiated surface from the irradiated surface image, luminance center identification for each of a plurality of lighting fixtures, for determining the luminance center position based on the difference of the luminance distribution with respect to the change in brightness The illumination center having the brightness center position included in the same irradiated section is grouped into the same lighting apparatus group. And a CPU including a grouping unit.

  According to the above lighting control system, the mutual correspondence is specified based on the luminance distribution given to the irradiated surface of each irradiated section instead of the illuminance of each lighting apparatus, and the illumination corresponding to the same irradiated section The fixtures are grouped into the same luminaire group. Accordingly, it is 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 the ease of introducing the lighting control system is increased. In addition, if there is the grouping information acquired in this way, the user can accurately perform the lighting operation in each irradiated section in the illumination space.

  Here, it is preferable that the grouping unit is configured not to group the lighting fixtures whose luminance center position is not included in any of the plurality of irradiated sections into any of the lighting fixture groups. . 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.

として演算する寄与率演算部がＣＰＵに含まれていてもよい。これにより、各照明器具グループから各被照射区域への被照射面輝度の影響度が正確に得られる。 Furthermore, when the plurality of irradiated sections are composed of first to mth (2 ≦ m) irradiated sections, and the plurality of lighting fixture groups are composed of first to nth (n = m) lighting fixture groups, 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 luminance received by the j th (1 ≦ j ≦ m) irradiated section from the k th luminaire group,

As a result, the CPU may include a contribution rate calculation unit. Thereby, the influence degree of the to-be-irradiated surface brightness | luminance to each to-be-irradiated area from each lighting fixture group is obtained correctly.

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含んでいてもよい。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。 Furthermore, 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 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 include a dimming rate determining 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.

  When the unit of the dimming rate is%, if the dimming rate determination unit includes a negative value element in the dimming rate matrix R, the element is replaced with 0%, and the dimming rate When 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.

  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 also includes a lighting control method including a step of executing processing of each unit 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 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 1st Embodiment. It is a block diagram of the illumination control system by the 2nd Embodiment 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.

<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. Each of 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 luminance center specifying unit 303, and a grouping unit 304. 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 each of the units 300 to 304 described above.

  The setting management unit 300 determines the setting of the irradiated section 5 on the irradiated surface (hereinafter referred to as “section setting”) based on a user input via the user I / F 32. This section setting is a new setting determined by the user setting the boundary line of each section via the input unit 320 of the user I / F 32 in the irradiated surface image captured by the imaging device 2. Alternatively, an existing setting read from the storage unit 31 in response to a user instruction input from the input unit 320 may be used.

  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 contained in the lighting fixture group formed by the process mentioned later by the group control function is turned on / off and dimmed for each lighting fixture group.

  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. The luminance distribution acquisition unit 302 acquires the luminance distribution D1 when the selected lighting fixture 4 is turned on and the luminance distribution D0 when the selected lighting fixture 4 is turned off in the luminance distribution of the irradiated surface.

  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 performed 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. 3A and 3B. 3A and 3B 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.

  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. 3A. 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 brightness | luminance difference has arisen in FIG. 3A 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. 3A, 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. 3B 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. 3B, 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 execute the above processing for all the lighting fixtures 4-1 to 4-z in the selected section setting. 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 lighting fixture groups 6-1 to 6-n can be turned on / off and dimmed for each lighting fixture group by the group control function of the lighting control unit 301. 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. 4 shows a flowchart regarding the grouping process of the illumination control method according to this embodiment.
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.

  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 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, the illumination control system 1 according to the present embodiment captures the entire irradiated surface including the plurality of irradiated sections 5-1 to 5-m and acquires the irradiated surface image, and The CPU 30 is connected to the image pickup apparatus 2 by communication. The CPU 30 includes a lighting control unit 301 that changes the brightness of each of the plurality of lighting fixtures 4-1 to 4-z, a luminance distribution acquisition unit 302 that acquires an irradiated surface image and acquires a luminance distribution of the irradiated surface, For each of the lighting fixtures 4-1 to 4 -z, a luminance center specifying unit 303 that obtains a luminance center position based on a difference in luminance distribution with respect to a change in brightness, and the luminance center positions are irradiated sections 5-1 to 5-5. It includes a grouping unit 304 that identifies which irradiated section of m is included and groups the luminaires 4 having the luminance center position included in the same irradiated section 5 into the same luminaire group 6. As a result, it is possible to accurately and efficiently acquire 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. Further, if there is the grouping information acquired in this way, the user can accurately perform the lighting operation in each irradiated section 5 in the illumination space S.

<Second Embodiment>
In the said 1st Embodiment, although the structure which forms each lighting fixture group 6 corresponding to each to-be-irradiated section 5 was shown, in this embodiment, it is further from each lighting fixture group 6 to each to-be-irradiated area 5. A configuration for grasping and using the mutual influence on the irradiated surface luminance will be shown.

  FIG. 5 shows a block diagram of the illumination control system 1 according to 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 contribution rate calculation unit 305 and a dimming rate determination unit 306 in addition to 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. Including.

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. 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. 6 shows a flowchart relating to dimming control of the illumination control method in the present embodiment.
In step S105, the luminance setting matrix L for the section setting is determined. The brightness setting matrix L corresponding to each section setting may be stored in the storage unit 31 in advance, or the brightness setting matrix L for the selected section 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 luminance gravity center position, the calculated luminance value, the calculated contribution rate, and the determined dimming rate is overwritten on the irradiated surface image. Alternatively, the information may be a table or a text display represented by a numerical value.

As described above, in the lighting control system 1 of the present embodiment, the CPU 30 includes the contribution rate calculation unit 305, and the contribution rate calculation unit 305 turns on the lighting fixture group 6-k and turns off the remaining lighting fixture groups. The luminance values V _{(k, 1) to} V _{(k, m)} in the irradiated sections 5-1 to 5-m in the generated state are calculated, and the irradiated section 5-j receives from the luminaire group 6-k. The contribution ratio C _{(k, j)} of the irradiated surface brightness is _{expressed as} C _{(k, j)} = V _{(k, j)} / (V _{(1, j)} + V _{(2, j)} +... + V _{(n, j )} Calculate as ₎ . Thereby, the user can grasp | ascertain correctly the influence degree of the brightness | luminance to each to-be-irradiated area 5 from each lighting fixture group 6. FIG.

Further, the CPU 30 includes a dimming rate determination unit 306 as a configuration that uses such luminance contribution rate data. 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.

<Third Embodiment>
In the first and second embodiments, the configuration in which the control device 3 is provided separately from the imaging device 2 has been described. However, in this embodiment, most of the components of the control device such as the CPU 30 are the same as the imaging device 2. The structure integrated is shown.

  In FIG. 7, the block diagram of the illumination control system 1 of this embodiment is shown. In the present embodiment, components that are substantially the same as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. As shown in FIG. 8, the control device 3 has 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 determination as necessary). Section 306) will be described. 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 306, 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 partition setting, an input for selecting a partition setting stored in the storage unit 31, an input for selecting a luminance setting for the partition setting, and a manual for the lighting fixture 4 or the lighting fixture group 6. Instructions for turning on / off or dimming are included.

  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 or second embodiment 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.

  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. 4 or FIG. 6) that realizes the functions of the above 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 all of 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, and dimming rate determination unit 306. Can function as part. 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. There may be. Since the lighting control system 1 of the present invention does not require the light distribution characteristic of the lighting fixture as a calculation element, it is useful even in such an irregular situation.

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 ) described above with respect to the second embodiment.

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
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

Claims (9)

A lighting control system,
An imaging device for imaging an entire irradiated surface including a plurality of irradiated sections and generating an irradiated surface image;
A lighting control unit that changes the brightness of each of the plurality of lighting fixtures, a luminance distribution acquisition unit that acquires a luminance distribution of the irradiated surface from the irradiated surface image, and a change in brightness for each of the plurality of lighting fixtures A luminance center specifying unit for obtaining a luminance center position based on a difference of the luminance distribution with respect to the same, and specifying which irradiation zone the irradiation center position is included in among the plurality of irradiation zones, and the same irradiation zone And a CPU including a grouping unit for grouping lighting fixtures having a luminance center position included in the same lighting fixture group
With
When the plurality of irradiated sections are composed of first to mth (2 ≦ m) irradiated sections, and the plurality of lighting fixture groups are composed of first to nth (n = m) lighting fixture groups,
The CPU is
The luminance value V _(k) in the first to mth irradiated sections on the luminance distribution in a state where the kth (1 ≦ k ≦ n) lighting fixture group 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) of the} irradiated surface luminance received by the j-th (1 ≦ j ≦ m) irradiated section from the k-th lighting fixture group. The

A lighting control system further including a contribution rate calculation unit that calculates as: 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. A lighting control system,
An imaging device for imaging an entire irradiated surface including a plurality of irradiated sections and generating an irradiated surface image;
A lighting control unit that changes the brightness of each of the plurality of lighting fixtures, a luminance distribution acquisition unit that acquires a luminance distribution of the irradiated surface from the irradiated surface image, and a change in brightness for each of the plurality of lighting fixtures A luminance center specifying unit for obtaining a luminance center position based on a difference of the luminance distribution with respect to the same, and specifying which irradiation zone the irradiation center position is included in among the plurality of irradiation zones, and the same irradiation zone And a CPU including a grouping unit for grouping lighting fixtures having a luminance center position included in the same lighting fixture group
With
A lighting control system in which a main CPU including all or part of each part of the CPU is integrated with the imaging device. 5. The lighting control system according to claim 1 , wherein the grouping unit includes a lighting fixture in which the luminance center position is not included in any of the plurality of irradiated sections. A lighting control system configured not to be grouped into any luminaire group. In the lighting control system according to any one of claims 1 to 5 ,
The lighting control unit turns on and off the selected lighting fixture among the plurality of 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. A program for a computer to function as each unit of the lighting control system according to any one of claims 1 or al 6. A computer-readable storage medium in which the program according to claim 7 is stored. An illumination control method in an illumination control system having an imaging device and a CPU,
Lighting a lighting fixture selected from a plurality of lighting fixtures with a first brightness by the CPU;
Imaging the entire irradiated surface including a plurality of irradiated sections with the imaging device, and obtaining a first luminance distribution that is a luminance distribution of the irradiated surface by the CPU;
Turning on or off the selected lighting fixture with the second brightness by the CPU;
Imaging the entire illuminated surface with the imaging device and obtaining a second luminance distribution, which is a luminance distribution of the illuminated surface, with the CPU;
Identifying a luminance center position of the selected luminaire based on a difference between the first luminance distribution and the second luminance distribution by the CPU;
Identifying, by the CPU, which irradiated section of the plurality of irradiated sections the luminance center position is included in;
By the CPU, Bei example a step of grouping the lighting fixture having a luminance center position included in the same object illuminated compartment to the same luminaire group,
When the plurality of irradiated sections are composed of first to mth (2 ≦ m) irradiated sections, and the plurality of lighting fixture groups are composed of first to nth (n = m) lighting fixture groups,
By the CPU
The luminance value V _(k) in the first to mth irradiated sections on the luminance distribution in a state where the kth (1 ≦ k ≦ n) lighting fixture group 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) of the} irradiated surface luminance received by the j-th (1 ≦ j ≦ m) irradiated section from the k-th lighting fixture group. The

Further comprising, lighting control method the step of calculating a.

Images