Lighting control device, lighting control method, and lighting control program

Abstract

To provide a lighting control device, a lighting control method, and a lighting control program capable of improving an energy saving effect while suppressing deterioration of comfort due to illumination light of a lighting device.SOLUTION: A lighting control device 10 includes an identification unit 11A that identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that hinder the person from illumination light from the lighting devices, and a setting unit 11B that sets the brightness of illumination light to be higher for a lighting device that has a higher degree of influence of illumination light on the visual field of a person, using the positional relationship of the three types of identified three-dimensional positions.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a lighting control device, a lighting control method, and a lighting control program. [Background technology]

[0002] Conventionally, the following techniques have been available as techniques that can be applied to improve energy saving effects while suppressing a decrease in comfort due to illumination light from a lighting device.

[0003] Patent Document 1 discloses a lighting control system that aims to perform optimal lighting control of the entire controlled space according to the location or movement of people, and to save energy and reduce construction work. This lighting control system is equipped with multiple detection units that detect the presence of people within a specified detection area. This lighting control system is equipped with a lighting device in which the detection areas of the specified detection units are different in size and are set to overlap approximately coaxially, and the lighting control system determines the distance to a person depending on the number of detection units that detect a person and adjusts the light in two or more stages.

[0004] Patent Document 2 discloses a lighting system that aims to contribute to better workability or livability. This lighting system sets up multiple mutually connected areas in an illuminated space, and in a dimming method that reduces output in stages from manned areas, through surrounding unmanned areas, to the outer unmanned areas, adjusts the output of lighting fixtures in the unmanned areas depending at least on whether there is a single person or multiple people in the manned areas.

[0005] Furthermore, Patent Document 3 discloses a lighting control system that aims to perform lighting control that provides a comfortable lighting space for people without the need to install multiple cameras in all directions. This lighting control system includes a visible image acquisition unit that acquires a visible image, and a viewpoint conversion unit that receives a visual field of a person and converts the visible image acquired by the visible image acquisition unit into a visible image from the human viewpoint in the visual field. This lighting control system also includes a luminance distribution calculation unit that calculates a luminance distribution in the visual field based on the visible image from the human viewpoint, and a dimming control unit that controls dimming of a lighting fixture based on the luminance distribution. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Patent No. 3033469 [Patent Document 2] Patent No. 5388173 [Patent Document 3] International Publication No. 2019 / 107060 Summary of the Invention [Problem to be solved by the invention]

[0007] However, the techniques disclosed in Patent Documents 1 to 3 do not take into consideration obstacles that may impede the illumination light from a lighting device to people. Therefore, these techniques have a problem in that they are not necessarily able to sufficiently improve the energy saving effect while suppressing the decrease in comfort caused by the illumination light from the lighting device.

[0008] The present disclosure has been made in consideration of the above circumstances, and aims to provide a lighting control device, a lighting control method, and a lighting control program that can improve energy-saving effects while suppressing a decrease in comfort caused by the illumination light from a lighting device. [Means for solving the problem]

[0009] The lighting control device of the present invention as recited in claim 1 comprises an identification unit that identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that impede the illumination light from the lighting devices to the person, and a setting unit that uses the positional relationship of the three types of identified three-dimensional positions to set a higher brightness of the illumination light from a lighting device that has a greater influence of the illumination light on the person's field of view.

[0010] According to the lighting control device of the present invention as set forth in claim 1, three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that impede the person from the illumination light from the lighting devices are identified, and the brightness of the illumination light from a lighting device that has a greater influence on the person's field of vision is set to be higher using the positional relationship of the three types of three-dimensional positions, thereby improving energy-saving effects while suppressing a decrease in comfort due to the illumination light from the lighting devices.

[0013] Also, Claim 1 The lighting control device according to the present invention is ,before When the person is a plurality of people, the setting unit sets one of the maximum, median, intermediate, and minimum values ​​among the setting values ​​of the brightness of the illumination light by the respective lighting devices of the plurality of people as the final setting value of the brightness of the illumination light by the lighting device.

[0014] Claim 1 According to the lighting control device of the present invention described above, when the person is a plurality of people, one of the maximum, median, intermediate, and minimum values ​​among the setting values ​​of the brightness of the illumination light by different lighting devices for each of the plurality of people is set as the final setting value of the brightness of the illumination light by the lighting device, thereby making it possible to improve the energy-saving effect while suppressing a decrease in comfort caused by the illumination light from the lighting device for the plurality of people.

[0015] A lighting control device according to the present invention as recited in claim 2 comprises an identification unit which identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle which is an impediment to illumination light from the lighting devices with respect to the person, and a setting unit which sets a brightness of the illumination light of a lighting device which has a greater influence of the illumination light on a visual field of the person using a positional relationship of the identified three types of three-dimensional positions, When the number of people is a plurality of people, the setting unit prioritizes the setting of the brightness of the illumination light of the illumination device corresponding to the person closest to the illumination device.

[0016] According to the lighting control device of the present invention as set forth in claim 2, three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that impede the person from the illumination light from the lighting devices are identified, and the brightness of the illumination light from a lighting device that has a greater influence on the person's field of vision is set to be higher using the positional relationship of the three types of three-dimensional positions, thereby improving energy-saving effects while suppressing a decrease in comfort due to the illumination light from the lighting devices. Also, Claim 2 According to the lighting control device of the present invention described above, when there are multiple people, by giving priority to the setting of the brightness of the lighting light of the lighting device corresponding to the person closest to the lighting device, it is possible to improve the energy saving effect while suppressing a decrease in comfort caused by the lighting light of the lighting device for the multiple people.

[0021] Claim 3 The lighting control method according to the present invention described in the item (1) identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstacle to the person from the illumination light emitted by the lighting devices, and sets the brightness of the illumination light of the lighting device that has a higher influence on the person's visual field using a positional relationship between the three types of three-dimensional positions. A lighting control method, in which, when the person is a plurality of people, any one of a maximum value, a median value, a middle value, and a minimum value among the setting values ​​of the brightness of the illumination light by the different lighting devices of the plurality of people is set as a final setting value of the brightness of the illumination light by the lighting device. .

[0022] Claim 3 According to the lighting control method of the present invention described above, three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that impede the person from the illumination light from the lighting devices are identified, and the brightness of the illumination light from a lighting device that has a greater influence on the person's field of vision is set to be higher using the positional relationship between the three types of three-dimensional positions, thereby improving energy-saving effects while suppressing a decrease in comfort due to the illumination light from the lighting devices. A lighting control method according to the present invention as recited in claim 4 identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that impede the person from receiving illumination from the lighting devices, and uses the positional relationships between the identified three types of three-dimensional positions to set a higher brightness of the illumination light from a lighting device that has a greater influence of its illumination on the person's field of view, and, if the person is a plurality of people, gives priority to the setting of the brightness of the illumination light from the lighting device corresponding to the person who is closest to the lighting device.

[0023] Claim 5 The lighting control program according to the present invention described in the above item 1 identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstacle to the person from the illumination light emitted by the lighting devices, and sets a higher brightness of the illumination light of the lighting device that has a higher influence on the person's visual field using a positional relationship between the identified three types of three-dimensional positions. and when the person is a plurality of people, a process of setting any one of a maximum value, a median value, a middle value, and a minimum value among the setting values ​​of the brightness of the illumination light by the lighting device of each of the plurality of people as a final setting value of the brightness of the illumination light by the lighting device. to be executed by the computer.

[0024] Claim 5According to the lighting control program of the present invention described above, three types of three-dimensional positions of a person, a plurality of lighting devices, and obstacles that impede the person from the illumination light from the lighting devices are identified, and the brightness of the illumination light from a lighting device that has a greater influence on the person's field of vision is set to be higher using the positional relationship of the three types of three-dimensional positions, thereby improving energy-saving effects while suppressing a decrease in comfort due to the illumination light from the lighting devices. A lighting control program according to the present invention as recited in claim 6 identifies three types of three-dimensional positions of a person, multiple lighting devices, and obstacles that impede the person from receiving illumination from the lighting devices, and uses the positional relationships between the three types of three-dimensional positions to set a higher brightness for the lighting device that has a greater influence of its illumination on the person's field of view. If there are multiple people, the program causes a computer to execute a process that prioritizes the setting of the brightness of the illumination light for the lighting device corresponding to the person who is closest to the lighting device. Effect of the Invention

[0025] As described above, according to the present invention, it is possible to improve the energy saving effect while suppressing the decrease in comfort caused by the illumination light from the lighting device. [Brief description of the drawings]

[0026] [Figure 1] 1 is a block diagram showing an example of a hardware configuration of a lighting control device according to an embodiment. FIG. [Diagram 2] 1 is a block diagram showing an example of a functional configuration of a lighting control device according to an embodiment; [Diagram 3] FIG. 2 is a schematic diagram illustrating an example of a configuration of a lighting situation information database according to the embodiment. [Figure 4] 4 is a schematic diagram showing an example of a configuration of a brightness setting information database according to the embodiment; FIG. [Diagram 5] 1 is a plan view showing an example of a configuration of a building targeted by a lighting control device according to an embodiment; [Figure 6] 5 is a flowchart showing an example of a lighting control process according to the first embodiment. [Figure 7] FIG. 13 is a diagram provided for explaining the lighting control process according to the embodiment, and is a schematic diagram showing an example of the lighting situation information database after obstacle presence information and distance information have been stored. [Figure 8] FIG. 13 is a diagram provided for explaining the lighting control process according to the embodiment, and is a schematic diagram showing an example of a brightness setting information database after information indicating the brightness of a lighting device is stored. [Figure 9] FIG. 13 is a diagram for explaining the lighting control process according to the embodiment, and is a plan view showing another example of the configuration of a building targeted by the lighting control device. [Figure 10A] FIG. 1 is a diagram for explaining a lighting control process according to an embodiment, and is a side view showing an example of a lighting control state in the prior art. [Figure 10B] FIG. 13 is a diagram for explaining the lighting control process according to the embodiment, and is a side view showing another example of a lighting control state in the prior art. [Figure 10C] FIG. 10 is a diagram for explaining the lighting control process according to the embodiment, and is a side view showing an example of a lighting control state by the lighting control process. [Figure 11] 10 is a flowchart showing an example of a lighting control process according to the second embodiment. [Figure 12] 13 is a flowchart showing an example of a lighting control process according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0028] [First embodiment] First, the configuration of a lighting control device 10 according to the present embodiment will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is a block diagram showing an example of the hardware configuration of the lighting control device 10 according to the present embodiment. Fig. 2 is a block diagram showing an example of the functional configuration of the lighting control device 10 according to the present embodiment. Examples of the lighting control device 10 include information processing devices such as a personal computer and a server computer.

[0029] 1, a lighting control device 10 according to this embodiment includes a CPU (Central Processing Unit) 11, a memory 12 as a temporary storage area, a non-volatile storage unit 13, an input unit 14 such as a keyboard and a mouse, a display unit 15 such as a liquid crystal display, a medium reading and writing device (R / W) 16, and a communication interface (I / F) unit 18. The CPU 11, memory 12, storage unit 13, input unit 14, display unit 15, medium reading and writing device 16, and communication interface (I / F) unit 18 are connected to each other via a bus B. The medium reading and writing device 16 reads information written in a recording medium 17 and writes information to the recording medium 17.

[0030] The storage unit 13 is realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, etc. A lighting control program 13A is stored in the storage unit 13 as a storage medium. The lighting control program 13A is stored (installed) in the storage unit 13 by setting a recording medium 17, on which the program 13A is written, in the medium reading and writing device 16, and the medium reading and writing device 16 reading the program 13A from the recording medium 17. The CPU 11 appropriately reads the lighting control program 13A from the storage unit 13, expands it in the memory 12, and sequentially executes the processes of the lighting control program 13A.

[0031] Furthermore, a lighting situation information database 13B and a brightness setting information database 13C are stored in the storage unit 13. The lighting situation information database 13B and the brightness setting information database 13C will be described in detail later.

[0032] Furthermore, the memory unit 13 stores a Building Information Modeling (BIM) model 13D relating to a building (hereinafter referred to as a "target building") in which a lighting device that is a target of control by the lighting control device 10 is installed. The lighting control device 10 according to this embodiment employs a conventionally known BIM model 13D.

[0033] In other words, the use of BIM is becoming more widespread in the field of architectural design. When designing an architecture, an architect creates a BIM model, which represents a three-dimensional model of the building to be designed, and then proceeds with the design work.

[0034] By utilizing BIM, objects that represent the shape of a building and the shapes of various components installed in the building are created in a space on a computer, and attribute information is assigned to the objects. For example, attribute information can include information on physical characteristics (specific gravity, material, strength, rigidity, etc.), information on costs (e.g., the cost per 1m 2 It is possible to associate various analysis tools (such as unit price and construction cost) with objects. Therefore, for example, by linking a BIM model with various analysis tools, it is possible to automatically perform structural analysis and thermal load analysis according to the BIM model. Note that since BIM models are well known, further detailed explanations are omitted.

[0035] The BIM model 13D according to this embodiment includes information on the various components, such as lighting devices installed in the target building, and obstacles such as partitions and cabinets that may impede people from the illumination light from the lighting devices (hereinafter simply referred to as "obstacles"). Therefore, by referring to the BIM model 13D, the position, shape, size, etc. of the obstacles can be grasped.

[0036] 1, the communication I / F unit 18 according to this embodiment is electrically connected to lighting devices 20A, 20B, etc. installed in a target building. In the following description, when the lighting devices 20A, 20B, etc. are not to be individually distinguished from one another, they will be collectively referred to as "lighting device 20."

[0037] Therefore, the CPU 11 can individually control the lighting devices 20 installed in the target building. In this embodiment, the lighting devices 20 are configured so that the brightness of the illumination light can be set in a plurality of predetermined steps (three steps in this embodiment), but this is not limiting. For example, a lighting device that can set the brightness of the illumination light in a non-step manner may be used as the lighting device 20.

[0038] Moreover, the communication I / F unit 18 according to this embodiment is connected to an imaging device 30 that captures images of the interior of the target building. The imaging device 30 according to this embodiment is used to detect the position of a person inside the target building, and is capable of capturing images of the entire area in the target building where people may be present. Therefore, the number of imaging devices 30 is not limited to one, and multiple imaging devices may be used in a distributed manner depending on the size of the target building, the number of obstacles, etc. In this embodiment, image data showing images captured by all of the imaging devices 30 is transmitted to the lighting control device 10.

[0039] Next, the functional configuration of the lighting control device 10 according to this embodiment will be described with reference to FIG.

[0040] 2, the lighting control device 10 according to this embodiment includes a determination unit 11A, a setting unit 11B, and a control unit 11C. The CPU 11 of the lighting control device 10 executes a lighting control program 13A to function as the determination unit 11A, the setting unit 11B, and the control unit 11C.

[0041] The identification unit 11A according to the present embodiment identifies three types of three-dimensional positions: a person, a plurality of lighting devices 20, and an obstacle that is an obstacle to the illumination light from the lighting devices 20 with respect to the person.

[0042] In this embodiment, the three-dimensional position of the person is specified by image recognition of the captured image obtained by the image capture device 30, but the present invention is not limited to this. For example, the three-dimensional position of the person may be detected using RFID (Radio Frequency Identification) or a beacon. In this embodiment, the center position of both eyes of the person is applied as the three-dimensional position of the person, but the present invention is not limited to this. For example, a position near the person's eyes, such as the center of gravity of the person's head or the center of the person's head, may be applied as the three-dimensional position of the person.

[0043] In addition, in this embodiment, the three-dimensional positions of the lighting device 20 and the obstacle are specified using the BIM model 13D, but this is not limited thereto. For example, the three-dimensional positions of the lighting device 20 and the obstacle may be specified by image recognition using the image captured by the imaging device 30. Also, for example, instead of the BIM model 13D, the three-dimensional positions of the lighting device 20 and the obstacle may be specified from three-dimensional CAD (Computer Aided Design) information. Note that in this embodiment, the emission position of the illumination light from the lighting device 20 is applied as the three-dimensional position of the lighting device 20, but this is not limited thereto. For example, the three-dimensional position of the lighting device 20 may be a position in the vicinity of the emission position of the illumination light. In addition, in this embodiment, the three-dimensional position of the obstacle is applied as the center of gravity position of the obstacle, but this is not limited thereto. For example, the position of the end of the area of ​​the obstacle that blocks the illumination light from the lighting device 20 may be applied as the three-dimensional position of the obstacle.

[0044] Furthermore, the setting unit 11B according to this embodiment uses the positional relationship between the three types of three-dimensional positions identified by the identifying unit 11A to set the brightness of the illumination light of the illumination device 20 that has a greater influence on the human visual field.

[0045] Here, the setting unit 11B according to the present embodiment sets the brightness of the illumination light in a plurality of predetermined stages (three stages in the present embodiment). Furthermore, when the person is a plurality of people, the setting unit 11B according to the present embodiment sets the maximum value among the set values ​​of the brightness of the illumination light by the different illumination devices 20 of the plurality of people as the final set value of the brightness of the illumination light by the illumination device 20. However, this is not limited to the above embodiment, and any one of the median, intermediate value, and minimum value among the set values ​​of the plurality of people may be set as the final set value of the brightness of the illumination light by the illumination device 20.

[0046] Then, the control unit 11C according to this embodiment controls the operation of each of the lighting devices 20 using the setting result by the setting unit 11B.

[0047] Next, the lighting situation information database 13B according to this embodiment will be described with reference to Fig. 3. Fig. 3 is a schematic diagram showing an example of the configuration of the lighting situation information database 13B according to this embodiment.

[0048] 3, the lighting situation information database 13B according to the present embodiment stores, for each combination of section information and lighting information, information indicating the distance between the corresponding section and the lighting device 20 in the target building and the presence or absence of an obstacle. Note that the section information is identification information indicating a section number individually assigned to each section area described below, and the lighting information is identification information individually assigned to the lighting device 20 installed in the target building.

[0049] In this embodiment, as the identification information indicating the block number, as shown in FIG. 5 as an example, the inside of the target building 50 is divided into a matrix shape in a plan view, and numbers starting from 1 are assigned to each divided area in ascending order from the upper left corner to the lower right corner in the same order as raster scanning. However, it goes without saying that the present embodiment is not limited to this form. Also, in this embodiment, as shown in FIG. 5 as an example, as the identification information of the lighting device 20, L1, L2, ... are assigned to the lighting devices 20 provided in the target building 50 in a plan view of the inside of the target building 50, in the same order as raster scanning, from the upper left corner to the lower right corner. However, it goes without saying that the present embodiment is not limited to this form.

[0050] 5 is a plan view showing an example of the configuration of a building (target building) targeted by the lighting control device 10 according to the embodiment, but the image capturing device 30 is omitted to avoid confusion. In addition, the example shown in FIG. 3 shows a default state, and as an example, a hyphen ("-") is stored as information indicating the distance and the presence or absence of an obstacle.

[0051] Next, the brightness setting information database 13C according to this embodiment will be described with reference to Fig. 4. Fig. 4 is a schematic diagram showing an example of the configuration of the brightness setting information database 13C according to this embodiment.

[0052] As shown in FIG. 4, the brightness setting information database 13C according to this embodiment stores person information indicating whether or not a person is present, in addition to information corresponding to a combination of section information and lighting information similar to that of the lighting situation information database 13B.

[0053] That is, as described above, the lighting control device 10 according to this embodiment detects the three-dimensional position of a person present in the target building 50, and sets the brightness of the lighting device 20 using the positional relationship between the three-dimensional position of the person and the three-dimensional positions of the lighting device 20 and obstacles. The brightness setting information database 13C according to this embodiment stores information indicating the brightness setting results according to the presence or absence of a person.

[0054] In the example shown in FIG. 4, as the default information for the person information, information indicating "not present" is applied as an example, and as the default information for indicating the setting result of the brightness of the illumination light of each of the lighting devices 20, "-" (hyphen) is applied as an example.

[0055] Next, the operation of the lighting control device 10 according to this embodiment will be described with reference to Fig. 6 to Fig. 10. When a command input for starting execution of a lighting control process is made by a user via the input unit 14, the CPU 11 of the lighting control device 10 executes the lighting control program 13A, thereby executing the lighting control process shown in Fig. 6. Fig. 6 is a flowchart showing an example of the lighting control process according to this embodiment. Note that here, a case will be described where the target building 50 is that shown in Fig. 5.

[0056] In step 100 of Figure 6, the CPU 11 reads out the BIM model 13D from the memory unit 13, and in step 102, the CPU 11 uses the read-out BIM model 13D to identify the three-dimensional positions of all lighting devices 20 and obstacles installed in the target building 50.

[0057] In step 104, the CPU 11 uses the identified three-dimensional positions of the lighting devices 20 and the obstacles to calculate the distance between each of the divided areas in the target building 50 and each of the lighting devices 20, and detects the presence or absence of an obstacle between each of the divided areas and each of the lighting devices 20. The CPU 11 then stores, in the lighting situation information database 13B, information indicating the presence of an obstacle ("Nan" in this embodiment, hereinafter referred to as "obstacle presence information") as information corresponding to a combination of a divided area and a lighting device 20 between which an obstacle exists. The CPU 11 also stores, in the lighting situation information database 13B, information indicating the corresponding distance (hereinafter referred to as "distance information") as information corresponding to a combination of a divided area and a lighting device 20 between which an obstacle does not exist.

[0058] 7 shows an example of the lighting situation information database 13B after the obstacle presence information and the distance information are stored. When the target building 50 is as shown in FIG. 5, an obstacle 40 exists between a partitioned area to which "41" is assigned as the partition information and a lighting device 20 to which "L1" is assigned as the lighting information, so "Nan" indicating the presence of an obstacle is stored as information corresponding to the combination of these partitioned areas and the lighting device 20. Also, an obstacle 40 does not exist between a partitioned area to which "1" is assigned as the partition information and a lighting device 20 to which "L1" is assigned as the lighting information, so "2.0" (m) indicating the distance is stored as information corresponding to the combination of these partitioned areas and the lighting device 20.

[0059] In step 106, the CPU 11 controls the image capturing device 30 to start capturing moving images. This control starts transmission of image data obtained by capturing an image of the interior of the target building 50 as a moving image from the image capturing device 30 to the lighting control device 10.

[0060] Therefore, in step 108, the CPU 11 identifies the three-dimensional position of the person as described above, using the image data received from the image capture device 30. At this time, if there is no person in the target building 50, the three-dimensional position is not identified.

[0061] Therefore, in step 110, the CPU 11 determines whether or not the above-mentioned three-dimensional positions of one or more people have been identified, thereby determining whether or not there are people inside the target building 50, and if the determination is positive, proceeds to step 112.

[0062] In step 112, the CPU 11 stores information indicating the presence of a person (in this embodiment, "presence") as person information corresponding to the partitioned area in which a person is present in the brightness settings information database 13C. Through this process, as shown in Fig. 8 as an example, the person information corresponding to the partitioned area in which a person 70 is present in the brightness settings information database 13C is updated from "absent" to "present."

[0063] In step 114, the CPU 11 targets one of the people whose three-dimensional position has been identified (hereinafter referred to as the “target person”) and stores the brightness of each of the lighting devices 20 in the brightness setting information database 13C using the positional relationship between the target person, the lighting devices 20, and the obstacles 40, as shown below.

[0064] First, the CPU 11 stores information indicating the brightness of the lighting device 20 in the brightness setting information database 13C so that the closer the lighting device 20 is to the target person, the brighter the lighting device 20 is. In this embodiment, as described above, the brightness can be set to three levels for the lighting device 20 (hereinafter, represented as setting A, setting B, and setting C in order of brightness). For this reason, here, the distance between the target person and the lighting device 20 is divided into three levels based on a predetermined criterion, and the lighting device 20 is stored in the corresponding storage area of ​​the brightness setting information database 13C in order of the lighting device 20 in the closest category. In this embodiment, the brightness of setting C is set by turning off the lighting device, and the same "-" (hyphen) as the default information is applied as the information indicating the setting C.

[0065] Next, the CPU 11 refers to the lighting situation information database 13B to identify the lighting device 20 that has an obstacle 40 between it and the partitioned area where the target person is located, and stores information indicating the dimmest brightness of the identified lighting device 20 (in this embodiment, off) in the corresponding storage area of ​​the brightness setting information database 13C.

[0066] In step 116, CPU 11 determines whether or not the storage of information indicating brightness through the processing of step 114 has been completed for all of the people determined to be present in the processing of step 110. If the determination is negative, the process returns to step 114, whereas if the determination is positive, the process proceeds to step 118.

[0067] When repeatedly executing the processes of steps 114 to 116, CPU 11 stores (updates) the information indicating the brightness of lighting device 20 by the process of step 114 only when the brightness indicated by the information to be stored is brighter than the brightness indicated by the information already stored. As a result, information indicating the maximum brightness among the brightnesses according to the distance to a person present in the target building 50 is finally stored in brightness setting information database 13C.

[0068] In this manner, in the present embodiment, the maximum brightness among the brightnesses of the lighting device 20 assumed for the plurality of people is finally obtained, but the present invention is not limited to this. For example, as described above, instead of the maximum brightness, any one of the central brightness, intermediate brightness, and minimum brightness may be applied.

[0069] In step 118, the CPU 11 reads out information indicating brightness stored in the brightness setting information database 13C, and controls the brightness of the corresponding lighting device 20 so as to achieve the read brightness.

[0070] On the other hand, if the determination in step 110 is negative, the process proceeds to step 120, where the CPU 11 controls all of the illumination devices 20 to be turned off, and then the process proceeds to step 122.

[0071] In step 122, the CPU 11 determines whether or not the timing to end the lighting control process has arrived, and if the determination is negative, the process returns to step 108, whereas if the determination is positive, the process proceeds to step 124. Note that in this embodiment, the timing to end is the final time of the available time period for the target building 50, but this is not limiting. For example, the timing to end may be the timing when a command input to end the lighting control process is made by the user of the lighting control device 10 via the input unit 14.

[0072] In step 124, the CPU 11 performs control to stop the image capturing by the image capturing device 30 that was started in the process of step 106, and then ends this illumination control process.

[0073] 9 as an example, the lighting devices 20 in an area 80A (hereinafter referred to as the "first area") where a person 70A is present and surrounded by an obstacle 40 are set to the brightest brightness setting A. In this case, the lighting devices 20 in an area 80B (excluding the first area 80A) where a person 70B is present are set to the brightness settings A, B, and C (off) in order of proximity to the person 70B.

[0074] Fig. 10A is a side view showing a state of illumination light when the brightness of illumination device 20 is controlled to be brighter as the distance from a person becomes closer in a case where there is no obstacle. Fig. 10B is a side view showing a state of illumination light when the brightness of illumination device 20 is controlled to be brighter as the distance from a person becomes closer in a case where there is an obstacle. Fig. 10C is a side view showing a state of illumination light by the illumination control process according to this embodiment.

[0075] As shown in these figures, the lighting control process according to this embodiment can set the lighting that does not have any positive effect on people to the lowest brightness, compared to when the brightness of the lighting device 20 is simply controlled to be brighter the closer the person is to the lighting device. As a result, the lighting control process according to this embodiment can improve the energy saving effect while suppressing the decrease in comfort caused by the illumination light from the lighting device.

[0076] As described above, this embodiment includes an identifying unit 11A that identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstacle to the person from the illumination light from the lighting devices, and a setting unit 11B that sets the brightness of the illumination light of a lighting device that has a higher influence on the person's field of vision by using the positional relationship of the identified three types of three-dimensional positions. Therefore, it is possible to improve the energy saving effect while suppressing the deterioration of comfort due to the illumination light from the lighting devices.

[0077] According to the present embodiment, the brightness of the illumination light is set in a plurality of predetermined steps, so that the brightness of the illumination light of the lighting device can be controlled more easily than when the brightness of the illumination light is set in a non-step manner.

[0078] According to the present embodiment, when the person is a plurality of people, any one of the maximum, median, intermediate, and minimum values ​​among the brightness settings of the illumination light by the different lighting devices of the plurality of people is set as the final brightness setting of the illumination light by the lighting device. Therefore, it is possible to improve the energy saving effect while suppressing the deterioration of the comfort of the illumination light of the lighting device for the plurality of people.

[0079] Furthermore, according to the present embodiment, the positions of the lighting devices and the obstacles are identified from the BIM model corresponding to the building in which the lighting devices and the obstacles are installed, so that the positions can be identified more easily.

[0080] [Second embodiment] In this embodiment, when there are multiple people in the target building, a configuration example will be described in which the setting of the brightness of the illumination light of the illumination device corresponding to the person closest to the illumination device is prioritized. Note that the configuration of the lighting control device 10 according to this embodiment is the same as that of the first embodiment, except for the function of the setting unit 11B.

[0081] That is, when there are multiple people in the target building, the setting unit 11B according to the present embodiment prioritizes the setting of the brightness of the illumination light of the illumination device 20 corresponding to the person closest to the illumination device 20.

[0082] The operation of lighting control device 10 according to this embodiment will be described below with reference to Fig. 11. Fig. 11 is a flowchart showing an example of lighting control processing according to this embodiment, and steps that perform the same processing as the lighting control processing according to the first embodiment shown in Fig. 6 are assigned the same step numbers as in Fig. 6 and descriptions thereof will be omitted.

[0083] In step 115 of FIG. 11, the CPU 11 targets the lighting device 20 that is located closer to the target person than the distances to people present in the other target buildings 50, and stores information indicating the brightness of each of the lighting devices 20 in the brightness setting information database 13C, similar to the processing of step 114 of the lighting control processing in the first embodiment.

[0084] As described above, according to this embodiment, when the number of people is more than one, the brightness setting of the illumination light of the illumination device corresponding to the person closest to the illumination device is prioritized, thereby improving the energy saving effect while suppressing the decrease in comfort of the illumination light of the illumination device for the multiple people.

[0085] [Third embodiment] In this embodiment, an example of a case where the positions of people and lighting devices in a target building are identified, and then the obstacle is determined by ray tracing using the identified positions of the people and lighting devices, and the position of the obstacle is identified will be described. Note that the configuration of the lighting control device 10 according to this embodiment is the same as that of the first embodiment, except for the function of the identification unit 11A.

[0086] That is, the identification unit 11A according to this embodiment identifies the positions of the person and the lighting device 20, and then determines an obstacle by ray tracing using the identified positions of the person and the lighting device 20, and identifies the position of the obstacle.

[0087] Hereinafter, the operation of the lighting control device 10 according to this embodiment will be described with reference to Fig. 12. When a command to start execution of a lighting control process is input by a user via the input unit 14, the CPU 11 of the lighting control device 10 executes the lighting control program 13A, thereby executing the lighting control process shown in Fig. 12. Fig. 12 is a flowchart showing an example of the lighting control process according to this embodiment.

[0088] In step 200 of FIG. 12, the CPU 11 reads out the BIM model 13D from the memory unit 13, and in step 202, the CPU 11 identifies the three-dimensional positions of all lighting devices 20 installed in the target building 50 using the read-out BIM model 13D.

[0089] In step 204, the CPU 11 controls the image capturing device 30 to start capturing moving images. This control starts transmission of image data obtained by capturing an image of the inside of the target building 50 as a moving image from the image capturing device 30 to the lighting control device 10.

[0090] Therefore, in step 206, the CPU 11 identifies the three-dimensional position of the person as described above, using the image data received from the image capture device 30. At this time, if there is no person in the target building 50, the three-dimensional position is not identified.

[0091] Therefore, in step 208, the CPU 11 determines whether or not the above-mentioned three-dimensional positions of one or more people have been identified, thereby determining whether or not there are people inside the target building 50, and if the determination is positive, proceeds to step 210.

[0092] In step 210, the CPU 11 determines an obstacle existing between a target person who is one of the people whose three-dimensional position has been specified and all the lighting devices 20 whose three-dimensional positions have been specified, and specifies the three-dimensional position of the determined obstacle. In this embodiment, the obstacle is determined using a conventionally known ray tracing, but the method is not limited to this. For example, photon mapping may be used to specify the obstacle.

[0093] In step 212, the CPU 11 stores information indicating the brightness of each of the lighting devices 20 in the brightness setting information database 13C for the above-mentioned target person, similar to the processing in step 114 of the lighting control processing according to the first embodiment.

[0094] In step 214, CPU 11 determines whether or not the storage of information indicating brightness through the processing of step 212 has been completed for all of the people determined to be present in the processing of step 208. If the determination is negative, the process returns to step 210, whereas if the determination is positive, the process proceeds to step 216.

[0095] When repeatedly executing the processes of steps 210 to 214, CPU 11 stores (updates) the information indicating the brightness of lighting device 20 by the process of step 212 only when the brightness indicated by the information to be stored is brighter than the brightness indicated by the information already stored. As a result, information indicating the maximum brightness among the brightnesses according to the distance to a person present in the target building 50 is finally stored in brightness setting information database 13C.

[0096] In step 216, the CPU 11 reads out information indicating the brightness stored in the brightness setting information database 13C, and controls the brightness of the corresponding lighting device 20 so as to achieve the read brightness.

[0097] On the other hand, if the determination in step 208 is negative, the process proceeds to step 218, where the CPU 11 controls all of the illumination devices 20 to be turned off, and then the process proceeds to step 220.

[0098] In step 220, the CPU 11 determines whether or not the timing to end the lighting control process has arrived, and if the determination is negative, the process returns to step 206, whereas if the determination is positive, the process proceeds to step 222. Note that, in the present embodiment, the timing to end the process is the final time of the available time period for the target building 50, but it goes without saying that the present invention is not limited to this.

[0099] In step 222, the CPU 11 performs control to stop the image capturing by the image capturing device 30 that was started in the process of step 204, and then ends this illumination control process.

[0100] As described above, according to this embodiment, after the positions of the person and the lighting device are identified, the obstacle is determined by ray tracing using the identified positions of the person and the lighting device, and the position of the obstacle is identified. Therefore, the position of the obstacle can be identified with higher accuracy.

[0101] It goes without saying that the configurations of the various databases applied in the above embodiments are merely examples, and the present invention is not limited to the exemplified ones.

[0102] Furthermore, the flow of the lighting control process applied in each of the above embodiments is just an example, and it goes without saying that it is possible to delete unnecessary steps, add new steps, or rearrange the processing order.

[0103] In each of the above embodiments, for example, the hardware structure of the processing unit that executes each process of the identification unit 11A, the setting unit 11B, and the control unit 11C may be the various processors shown below. As described above, the various processors include a CPU, which is a general-purpose processor that executes software (programs) and functions as a processing unit, as well as a programmable logic device (PLD), which is a processor whose circuit configuration can be changed after manufacture such as an FPGA (Field-Programmable Gate Array), a dedicated electric circuit, which is a processor having a circuit configuration designed specifically for executing a specific process such as an ASIC (Application Specific Integrated Circuit), etc.

[0104] The processing unit may be configured with one of these various processors, or may be configured with a combination of two or more processors of the same or different types (for example, a combination of multiple FPGAs, or a combination of a CPU and an FPGA).The processing unit may also be configured with a single processor.

[0105] As an example of configuring the processing unit with one processor, first, there is a form in which one processor is configured with a combination of one or more CPUs and software, as represented by computers such as client and server, and this processor functions as the processing unit. Second, there is a form in which a processor is used that realizes the functions of the entire system including the processing unit with one IC (Integrated Circuit) chip, as represented by System On Chip (SoC), etc. In this way, the processing unit is configured using one or more of the above various processors as a hardware structure.

[0106] Furthermore, more specifically, the hardware structure of these various processors can be an electric circuit that combines circuit elements such as semiconductor elements. [Explanation of symbols]

[0107] 10 Lighting control device 11 CPU 11A Specific part 11B Setting section 11C Control section 12. Memory 13 Storage section 13A Lighting Control Program 13B Lighting situation information database 13C Brightness setting information database 13D BIM Model 14 Input section 15 Display 16 Media Read / Write Device 17 Recording media 18 Communication I / F section 20 Lighting Equipment 30 Imaging Equipment 40 Obstacles 50 Target Buildings 70 people

Claims

1. an identification unit that identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstacle to the person being illuminated by the lighting devices; a setting unit that sets a brightness of the illumination light of the illumination device having a higher influence on the person's visual field using the positional relationship of the three types of three-dimensional positions that have been identified; and Equipped with When the person is a plurality of people, the setting unit sets one of a maximum value, a median value, a middle value, and a minimum value among the setting values ​​of the brightness of the illumination light by the lighting devices of each of the plurality of people as a final setting value of the brightness of the illumination light by the lighting device. Lighting control device.

2. an identification unit that identifies three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstacle to the person being illuminated by the lighting devices; a setting unit that sets a brightness of the illumination light of the illumination device having a higher influence on the person's visual field using the positional relationship of the three types of three-dimensional positions that have been identified; and Equipped with When the number of people is multiple, the setting unit prioritizes a setting of the brightness of the illumination light of the illumination device corresponding to the person closest to the illumination device. Lighting control device.

3. Identifying three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstruction to the person from the illumination light from the lighting devices; using the positional relationship between the three types of three-dimensional positions thus identified, the brightness of the illumination light of the illumination device having a higher influence on the person's visual field is set to be higher.

1. A lighting control method, comprising: When the person is a plurality of people, any one of a maximum value, a median value, a middle value, and a minimum value among the setting values ​​of the brightness of the illumination light by the lighting device of each of the plurality of people is set as a final setting value of the brightness of the illumination light by the lighting device. Lighting control methods.

4. Identifying three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstruction to the person from the illumination light from the lighting devices; using the positional relationship between the three types of three-dimensional positions thus identified, the brightness of the illumination light of the illumination device having a higher influence on the person's visual field is set to be higher.

1. A lighting control method, comprising: When the person is a plurality of people, a setting of the brightness of the illumination light of the illumination device corresponding to the person closest to the illumination device is given priority. Lighting control methods.

5. Identifying three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstruction to the person from the illumination light from the lighting devices; using the positional relationship between the three types of three-dimensional positions thus identified, the brightness of the illumination light of the illumination device having a higher influence on the person's visual field is set to be higher. A process comprising: When the person is a plurality of people, any one of a maximum value, a median value, a middle value, and a minimum value among the setting values ​​of the brightness of the illumination light by the lighting device of each of the plurality of people is set as a final setting value of the brightness of the illumination light by the lighting device. A lighting control program for causing a computer to execute processing.

6. Identifying three types of three-dimensional positions of a person, a plurality of lighting devices, and an obstacle that is an obstruction to the person from the illumination light from the lighting devices; using the positional relationship between the three types of three-dimensional positions thus identified, the brightness of the illumination light of the illumination device having a higher influence on the person's visual field is set to be higher. A process comprising: When the person is a plurality of people, a setting of the brightness of the illumination light of the illumination device corresponding to the person closest to the illumination device is given priority. A lighting control program for causing a computer to execute processing.

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