JP2023071561A - Illumination control system, illumination load, determination device, control method, and program - Google Patents

Abstract

To achieve energy saving.SOLUTION: An illumination control system 1 controls a plurality of illumination loads 5. The plurality of illumination loads 5 irradiates a space where a plurality of persons exists with light. The illumination control system 1 includes an acquisition part 64, a determination part 65, and an illumination control part 41. The acquisition part 64 acquires information on an index for the number of persons existing in each of a plurality of areas included in the space. The determination part 65 determines a partial area among the plurality of areas as an extinction area that is an object where illumination is reduced, on the basis of the index. The illumination control part 41 reduces illuminance of the illumination loads 5 for illuminating the extinction area among the plurality of illumination loads 5.SELECTED DRAWING: Figure 1

Description

The present disclosure relates generally to lighting control systems, lighting loads, decision devices, control methods and programs. More specifically, the present disclosure includes a lighting control system, a control method, and a program for controlling a plurality of lighting loads, a lighting load controlled by the lighting control system, and a determination device for determining control of the plurality of lighting loads. , concerning.

As a prior example of a system that controls a plurality of lighting loads, the environment control system described in Patent Document 1 is cited. An ambient control system includes one or more task lights (lighting loads), a plurality of base lights (lighting loads), and a controller. The controller is capable of implementing one or more group controls that coordinately implement dimming and toning control of at least one task light and a plurality of base lights. One or more group controls include: Controls are included for controlling at least one task light and a plurality of base lights.

JP 2021-051877 A

An object of the present disclosure is to provide a lighting control system, a lighting load, a determination device, a control method, and a program capable of realizing energy saving.

A lighting control system according to an aspect of the present disclosure is a lighting control system that controls a plurality of lighting loads that illuminate a space in which a plurality of people are present. The lighting control system comprises an acquisition unit, a determination unit, and a lighting control unit. The acquisition unit acquires information about an index of the number of people present in each of a plurality of areas included in the space. The determining unit determines, based on the index, a part of the plurality of areas as a dimming area to be reduced in illuminance. The lighting control unit reduces the illuminance of a lighting load that illuminates the dimming area, among the plurality of lighting loads.

A lighting load according to an aspect of the present disclosure is used as one of the plurality of lighting loads controlled by the lighting control system. The lighting load functions as one beacon terminal of the plurality of beacon terminals.

A determination device according to an aspect of the present disclosure is a determination device related to control of multiple lighting loads that irradiate light onto a space in which multiple people are present. The determination device includes an acquisition unit and a determination unit. The acquisition unit acquires information about an index of the number of people present in each of a plurality of areas included in the space. The determining unit determines, based on the index, a part of the plurality of areas as a dimming area to be reduced in illuminance.

A control method according to an aspect of the present disclosure is a control method for controlling a plurality of lighting loads that irradiate a space in which a plurality of people are present. The control method has an acquisition step, a determination step, and an illumination control step. The acquisition step acquires information on an index of the number of people present in each of a plurality of areas included in the space. In the determining step, based on the index, a part of the plurality of areas is determined as a dimming area to be reduced in illuminance. In the lighting control step, among the plurality of lighting loads, the illuminance of the lighting load that illuminates the dimmed area is reduced.

A program according to an aspect of the present disclosure is a program for causing one or more processors to execute the control method.

A program according to another aspect of the present disclosure is a program for causing one or more processors of the mobile terminal used with the lighting control system to execute a receiving step, an estimating step, and a transmitting step. . In the receiving step, the beacon signal is received from at least one of the plurality of beacon terminals. In the estimating step, based on the beacon signal received in the receiving step, the location of the mobile terminal is estimated to generate the location information. In the transmitting step, the position information generated in the estimating step is transmitted to the lighting control system.

The present disclosure has the advantage of realizing energy savings.

FIG. 1 is a block diagram of an integrated system including a lighting control system according to Embodiment 1. FIG. FIG. 2 is a schematic diagram showing a space in which the same lighting control system is used. FIG. 3 is a sequence diagram showing an operation example of the lighting control system; FIG. 4 is a flow chart showing the process of determining control of the lighting load by the same lighting control system. FIG. 5 is a block diagram of an integrated system including a lighting control system according to the second embodiment. FIG. 6 is a block diagram of an integrated system including a lighting control system according to the third embodiment.

In each embodiment below, the lighting control system of the present disclosure will be described with reference to the drawings. However, each embodiment described below is only a part of various embodiments of the present disclosure. Each of the embodiments described below can be modified in various ways according to design and the like as long as the object of the present disclosure can be achieved. Moreover, FIG. 2 is a schematic diagram, and the ratio of the size and thickness of each component in the diagram does not necessarily reflect the actual dimensional ratio.

(Embodiment 1)
(overview)
A lighting control system 1 shown in FIG. 1 is used to control a plurality of lighting loads 5 installed in a facility. Facilities are, for example, offices and factories. A facility is, for example, a place where a plurality of people work such as desk work. The present embodiment will be described on the assumption that the facility is an office. In addition, facilities may be commercial complexes, libraries, art galleries, museums, amusement facilities, theme parks, parks, airports, railway stations, ballparks, hotels, hospitals, residences, and the like. Also, the facility may be a mobile object such as a ship or a railroad vehicle.

As shown in FIG. 1 , the lighting control system 1 of this embodiment controls multiple lighting loads 5 . A plurality of lighting loads 5 illuminate a space SP1 (see FIG. 2) where a plurality of people are present. The lighting control system 1 includes an acquisition unit 64 , a determination unit 65 and a lighting control unit 41 . The acquisition unit 64 acquires information regarding an index of the number of people present in each of the multiple areas included in the space SP1. The determination unit 65 determines a part of the plurality of areas as a dimming area to be reduced in illuminance, based on the index. The lighting control unit 41 reduces the illuminance of the lighting load 5 that illuminates the dimming area among the plurality of lighting loads 5 .

According to this embodiment, the illuminance of some of the plurality of lighting loads 5 can be reduced according to the index regarding the number of people in each area. Therefore, energy saving can be achieved compared to the case where the illuminance of all the lighting loads 5 among the plurality of lighting loads 5 is maintained.

The lighting control system 1 is particularly preferably applied to a free-address office in which individual seats are not fixed and can be freely moved. When the illuminance of the lighting load 5 that illuminates the dimmed area decreases, the person in the dimmed area moves to a brighter illuminated area (hereinafter referred to as "operation area") to continue work. be able to.

In the example shown in FIG. 2, areas A1 to A6 exist, and one person stays (exists) in area A1, two people in area A3, and one person in area A5. In this case, for example, areas A1, A2, A4, A5, and A6 are dimmed areas, and lighting loads 5 (plural lighting loads 5 belonging to groups L1, L2, L4, L5, and L6) illuminate the dimmed areas. illuminance is reduced. On the other hand, the illuminance of the lighting loads 5 (the plurality of lighting loads 5 belonging to group L3) that illuminates area A3, which is the operating area, is maintained. Persons H1 and H4 staying in the dimmed area can work in an environment where sufficient illuminance is ensured by moving to area A3, which is the working area. In addition, since the illuminance of the lighting load 5 that illuminates the dimmed area is reduced, energy can be saved.

The lighting loads 5 that illuminate the areas A2, A4, and A6 where there are no people may be turned off in advance or controlled to have a lower illuminance than the operating areas. In this case, areas A1 and A5 may be set as dimming areas.

A function similar to that of the lighting control system 1 may be implemented as a control method or program. A control method according to one aspect is a control method for controlling a plurality of lighting loads 5 that irradiate a space SP1 where a plurality of people are present with light. The control method has an acquisition step, a determination step, and an illumination control step. In the obtaining step, information regarding an index of the number of people present in each of the plurality of areas included in the space SP1 is obtained. In the determining step, based on the index, a part of the plurality of areas is determined as a dimming area to be reduced in illuminance. In the lighting control step, among the plurality of lighting loads 5, the illuminance of the lighting load 5 that illuminates the dimmed area is reduced.

A program according to one aspect is a program for causing one or more processors to execute the above control method. The program may be recorded on a computer-readable non-transitory recording medium.

Also, some functions of the lighting control system 1 may be implemented by the decision device 6 . The determination device 6 according to one aspect is a determination device 6 related to control of a plurality of lighting loads 5 that irradiate a space SP1 where a plurality of people are present with light. The determination device 6 includes an acquisition section 64 and a determination section 65 . The acquisition unit 64 acquires information regarding an index of the number of people present in each of the multiple areas included in the space SP1. Based on the index, the determination unit 65 determines a part of the plurality of areas as a dimming area to be reduced in illuminance.

Also, functions similar to those of the determination device 6 may be realized as a determination method or a program. A determination method according to one aspect includes the obtaining step and the determining step. A program according to one aspect is a program for causing one or more processors to execute the above determination method. The program may be recorded on a computer-readable non-transitory recording medium.

(detail)
(1) Overall Configuration Hereinafter, the lighting control system 1 and various devices related to the lighting control system 1 will be described in detail. A configuration including the lighting control system 1 and various devices related to the lighting control system 1 is hereinafter referred to as an integrated system 100 (see FIG. 1).

As shown in FIG. 1 , the integrated system 100 includes a lighting control system 1 , a measurement system 200 and multiple lighting loads 5 . The lighting control system 1 comprises a decision device 6 and a lighting controller 4 . The measurement system 200 has multiple beacon terminals 2 and multiple mobile terminals 3 .

A plurality of beacon terminals 2, a lighting controller 4 and a plurality of lighting loads 5 are installed in a facility. A plurality of portable terminals 3 are carried by a plurality of facility users (persons). The decision device 6 may be installed in the facility or may be installed in a place away from the facility.

The space SP1 illuminated by the plurality of lighting loads 5 is at least part of the facility. In this embodiment, as an example, the space SP1 is one room in a facility.

Note that the space SP1 may include multiple rooms. Also, the multiple areas included in the space SP1 may be connected to each other or may be separated from each other.

(2) Measurement System The measurement system 200 measures the position of each person existing in the space SP1 and generates position information indicating the position of each person. The lighting control system 1 can obtain the number of people present in each of the plurality of areas based on the position information generated by the measurement system 200 .

A plurality of beacon terminals 2 of the measurement system 200 are installed, for example, on the ceiling of the facility. A plurality of beacon terminals 2 may be installed within the space SP1 or may be installed outside the space SP1. Each of the multiple beacon terminals 2 has a control unit 21 , a communication unit 22 and a storage unit 23 .

Control unit 21 includes a computer system. The control unit 21 performs overall control of its own device. Further, the control unit 21 controls the communication unit 22 to transmit the beacon signal. The communication unit 22 intermittently transmits beacon signals.

The communication unit 22 includes a communication interface device. The communication unit 22 can communicate with a communication unit 32 of the portable terminal 3, which will be described later. “Communicable” as used in the present disclosure means that a signal can be sent and received directly or indirectly via a network, a repeater, or the like, by an appropriate communication method such as wired communication or wireless communication. The communication method between the communication unit 22 and the communication unit 32 is, for example, Bluetooth (registered trademark) Low Energy, or WiFi (registered trademark).

The storage unit 23 stores information used by the beacon terminal 2 . The storage unit 23 stores identification information of the beacon terminals 2 .

Each of the plurality of mobile terminals 3 of the measurement system 200 is a mobile phone such as a smart phone, an electronic tag, a tablet terminal, or the like. A plurality of portable terminals 3 are carried by a plurality of facility users (persons). More specifically, each person carries one or more mobile terminals 3 . The measurement system 200 measures the position of each mobile terminal 3 as the position of the person carrying the mobile terminal 3 . Each mobile terminal 3 also has unique identification information. The lighting control system 1 identifies a plurality of persons based on the identification information of the mobile terminals 3 .

Each of the plurality of portable terminals 3 has a control section 31 , a communication section 32 and a storage section 33 .

Control unit 31 includes a computer system. The control unit 31 performs overall control of its own device.

Also, the control unit 31 includes a position estimation unit 311 . The position estimation unit 311 obtains the position of the mobile terminal 3 based on the beacon signal received by the communication unit 32 .

The position estimation unit 311 measures the received signal strength of the beacon signal received by the communication unit 32 . Furthermore, the position estimator 311 obtains the position of the mobile terminal 3 based on the received signal strength of the beacon signal. More specifically, the position estimating unit 311 detects the mobile terminal 3 and the three or more beacons based on the received signal strength of the beacon signal transmitted from each of the three or more beacon terminals 2 among the plurality of beacon terminals 2. Find the distance between each of the terminals 2 and . Furthermore, the position estimation unit 311 obtains position information (for example, coordinates) of the mobile terminal 3 by three-point positioning using the distance. The position information obtained by the position estimation unit 311 is transmitted to the determination device 6 via the communication unit 32 .

Note that the position estimation unit 311 merely indicates a function realized by the control unit 31 and does not necessarily indicate a substantial configuration.

The communication unit 32 includes a communication interface device. The communication unit 32 can communicate with the communication unit 22 of the beacon terminal 2 and the communication unit 62 of the determination device 6, which will be described later.

The storage unit 33 stores information used by the mobile terminal 3 . The storage unit 33 stores identification information of the mobile terminal 3 .

(3) Decision Device The decision device 6 has a control section 61 , a communication section 62 and a storage section 63 .

Control unit 61 includes a computer system. The control unit 61 performs overall control of the decision device 6 . The control unit 61 has an acquisition unit 64 , a determination unit 65 , a learning unit 66 and an index generation unit 67 . Note that the acquisition unit 64, the determination unit 65, the learning unit 66, and the index generation unit 67 merely represent functions realized by the control unit 61, and do not necessarily represent actual configurations. isn't it.

Acquisition unit 64 acquires information about an index of the number of people present in each of the plurality of areas. The index for the number of people is, for example, the number of people, or the number divided by the capacity of the area.

The indicator for the number of people and the information on the indicator for the number of people may be the same or different. When the indicator for the number of people is the number of people, the information on the indicator for the number of people may be the number of people, or may be the number obtained by dividing the number of people by the capacity of the area. In addition, when the index of the number of people is the number obtained by dividing the number of people by the capacity of the area, the information related to the index of the number of people may be the number of people or the number obtained by dividing the number of people by the capacity of the area. good.

Also, if the information about the index of the number of people and the index of the number of people are different, the determination device 6 obtains the latter from the former.

In this embodiment, an example will be described in which both the index for the number of people and the information about the index for the number of people are the number of people. The acquisition unit 64 first acquires the position information of each of the plurality of persons from the plurality of mobile terminals 3 via the communication unit 62 . In other words, the acquisition unit 64 has a function as the position information acquisition unit 641 that acquires the position information of the person existing in each of the multiple areas. Furthermore, the index generation unit 67 obtains the number of people present in each of the plurality of areas based on the position information of each of the plurality of persons and the information for dividing the space SP1 into the plurality of areas. Information for dividing the space SP1 into a plurality of areas is stored in the storage unit 63 .

As described above, each of the plurality of beacon terminals 2 can transmit a beacon signal to the mobile terminal 3 carried by each of the plurality of people, and the mobile terminal 3 (position estimating unit 311) transmits the beacon signal based on the beacon signal. location information of the mobile terminal 3 is generated. Furthermore, the index generator 67 generates an index (the number of people in each area) based on the position information acquired from the mobile terminal 3 . The acquisition unit 64 acquires the index generated by the index generation unit 67 .

The determination unit 65 determines the dimming area based on the index (the number of people in each area) obtained by the acquisition unit 64 . A dimming area is an area whose illuminance is to be reduced among the plurality of areas.

Also, the determining unit 65 generates a command signal. The command signal is a signal that designates the control details of the plurality of lighting loads 5 . The determining unit 65 generates a command signal including control details for reducing the illuminance of the lighting load 5 that illuminates at least the dimming area. The communication unit 62 transmits command signals to the lighting controller 4 . The lighting controller 4 controls multiple lighting loads 5 based on the command signal.

The learning unit 66 generates a learned model for the determining unit 65 to determine the dimming area. The details of the learning unit 66 will be described later.

The index generator 67 generates an index for the number of people present in each of the multiple areas included in the space SP1, as described above. In this embodiment, the index generator 67 generates (determines) the number of people in each area as an index.

The communication unit 62 includes a communication interface device. The communication unit 62 can communicate with the communication unit 32 of each of the plurality of mobile terminals 3 and the communication unit 42 of the lighting controller 4, which will be described later.

The storage unit 63 stores information used by the decision device 6 . The storage unit 63 stores information for dividing the space SP1 into a plurality of areas. The information is, for example, information indicating the position of each boundary of the plurality of areas, or information indicating the size and center coordinates of each of the plurality of areas. Each of the plurality of areas is a two-dimensional area that extends in the front-rear direction and the left-right direction. A plurality of areas are determined so as not to overlap each other when viewed from above. The shape of each of the multiple areas may be the same or different.

Also, the plurality of areas are determined, for example, based on the arrangement of the plurality of desks 8 (see FIG. 2) installed in the space SP1. More specifically, as shown in FIG. 2, one group (a so-called "island") of two or more desks 8 is defined as one area.

The storage unit 63 also stores information that associates a plurality of lighting loads 5 with a plurality of areas. Each lighting load 5 illuminates the associated area. The determination unit 65 identifies the lighting load 5 that illuminates the dimmed area by referring to the information linking the plurality of lighting loads 5 and the plurality of areas.

The storage unit 63 also functions as a priority storage unit 631 . The priority storage unit 631 stores the priority of each area. The priority is set by, for example, a facility administrator operating a predetermined device. The predetermined device is, for example, the decision device 6 or a management terminal owned by the manager of the facility. For example, a higher priority is set for an area closer to the entrance of the room forming the space SP1.

The storage unit 63 also functions as a capacity storage unit 632 . The capacity storage unit 632 stores the capacity of each area. The capacities of each of the plurality of areas are set by, for example, a facility administrator operating predetermined equipment. The predetermined device is, for example, the decision device 6 or a management terminal owned by the manager of the facility.

The capacity of each of a plurality of areas is a set value that sets the maximum number of people present in the area. In other words, it is assumed that there are at most as many people in one area as the capacity of this area. The capacity of each of the multiple areas is set, for example, to match the number of seats (the number of chairs 7 (see FIG. 2)) present in the area. Alternatively, the capacity of each of the multiple areas is set according to the size of the area, for example.

(4) Lighting Controller The lighting controller 4 has a lighting control section 41 , a communication section 42 and a storage section 43 .

The lighting controller 41 includes a computer system. The lighting controller 41 performs overall control of the lighting controller 4 . The lighting control unit 41 also controls the plurality of lighting loads 5 by causing the communication unit 42 to transmit control signals. The lighting control unit 41 reduces the illuminance of the lighting load 5 that illuminates the dimming area among the plurality of lighting loads 5 . The lighting control unit 41 controls the plurality of lighting loads 5 so that the illuminance of the dimming area is lower than the illuminance of the operating area. The operating area is an area different from the dimming area.

The lighting control unit 41 can individually control a plurality of lighting loads 5 . A plurality of lighting loads 5 are divided into a plurality of groups. Information for grouping the plurality of lighting loads 5 is stored in the storage unit 43 . The lighting control unit 41 controls the plurality of lighting loads 5 for each group. That is, the lighting control unit 41 performs the same control on one or more lighting loads 5 included in the same group. In FIG. 2, a plurality of lighting loads 5 are divided into groups L1, L2, L3, L4, L5 and L6. Each group contains one or more lighting loads 5 . Each of the plurality of lighting loads 5 is included in any one group.

For example, the command signal transmitted from the determination device 6 to the lighting controller 4 indicates the control details for the plurality of lighting loads 5 for each area. In this case, the lighting control unit 41 refers to the information linking the areas and groups, and determines the control details for the lighting load 5 of each group. Information linking areas and groups is stored in the storage unit 43, for example.

The communication unit 42 includes a communication interface device. The communication unit 42 can communicate with the communication unit 62 of the determination device 6 and the communication unit 52 of each of the plurality of lighting loads 5, which will be described later.

The storage unit 43 stores information used by the lighting controller 4 . The storage unit 43 stores, for example, addresses of the plurality of lighting loads 5 .

(5) Lighting Load Each of the plurality of lighting loads 5 has a control section 51, a communication section 52, a storage section 53, and a light source section .

Control unit 51 includes a computer system. The control unit 51 performs overall control of its own device.

The communication unit 52 includes a communication interface device. The communication unit 52 can communicate with the communication unit 42 of the lighting controller 4 .

The storage unit 53 stores information used by the lighting load 5 . The storage unit 53 stores the address of the lighting load 5, for example.

The light source unit 54 includes a light source such as a light emitting diode element. The light source unit 54 controls the current flowing through the light source under the control of the control unit 51 . Thereby, lighting of the light source is controlled. In the present disclosure, controlling lighting of the light source of the light source unit 54 is referred to as controlling lighting of the lighting load 5 . The control unit 51 controls lighting of the lighting load 5 based on the control signal transmitted from the lighting controller 4 .

The lighting control based on the control signal includes dimming the lighting load 5 . Dimming of the lighting load 5 decreases or increases the illuminance of the lighting load 5 . The higher the dimming rate, the higher the illuminance. When the dimming rate is 0%, the lighting load 5 is turned off, and when the dimming rate is 100%, the lighting load 5 is fully lit. In the present disclosure, the term “decrease in illuminance” is a concept that includes setting the dimming rate to 0% (that is, turning off the lighting load 5) from a state in which the dimming rate is greater than 0%. In addition, in the present disclosure, “increase in illuminance” includes changing from a state in which the light control rate is 0% to a state in which the light control rate is greater than 0% (that is, lighting the lighting load 5). It is a concept.

The dimming may be continuous dimming or stepped dimming. Also, the dimming rate of the lighting load 5 may be adjustable within a range from 0% to 100%, or within a limited range (for example, a range from 5% to 100%). may

The lighting control based on the control signal may include changing the color temperature of the lighting load 5 . Moreover, the lighting control based on the control signal may include blinking the lighting load 5 .

(6) Operation Example Next, an operation example of the integrated system 100 will be described with reference to FIGS. 2 to 4. FIG. The sequence shown in FIG. 3 and the flowchart shown in FIG. 4 are merely examples of the operation of the integrated system 100, and the order of processing may be changed as appropriate, and processing may be added or omitted as appropriate.

(6.1) Positioning As shown in FIG. 2, a plurality of persons H1 to H4 exist in space SP1. A plurality of persons H1 to H4 each carry a portable terminal 3. FIG. In FIG. 3, the portable terminal 3 carried by one of the persons H1 to H4 will be described. It is assumed that all of the plurality of lighting loads 5 are lit in the initial state (step ST1). For example, first, with the processing of the determining device 6 stopped, all of the plurality of lighting loads 5 are turned on manually by a person present in the space SP1 or automatically by setting a schedule. After that, the processing of the decision device 6 is started either manually by a person or automatically by setting a schedule.

As shown in FIG. 3, each of the beacon terminals 2 transmits a beacon signal (step ST2). The mobile terminal 3 receives the beacon signal. The position estimator 311 of the mobile terminal 3 obtains the position of the mobile terminal 3 based on the received signal strength of the beacon signal (step ST3). The mobile terminal 3 transmits position information indicating the position obtained in step ST3 to the determination device 6 (step ST4). The determining device 6 stores the received position information in the storage section 63 .

(6.2) Determining Control Next, the determination device 6 determines control for the plurality of lighting loads 5 (step ST5). Details of step ST5 are shown in FIG. In step ST5, first, the index generation unit 67 of the determination device 6 reads the position information from the storage unit 63 (step ST11). For example, the index generator 67 reads the position information acquired in the past 30 seconds. As a result, the index generation unit 67 reads the latest position information of each of the plurality of mobile terminals 3 existing in the space SP1.

The index generator 67 calculates the number of people present in each of the plurality of areas based on the position information of each of the plurality of mobile terminals 3 read in step ST11 (step ST12). More specifically, the storage unit 63 stores information (division information) for dividing the space SP1 into a plurality of areas. By collating the information, the number of people present in each of the plurality of areas is calculated. Furthermore, the index generator 67 calculates the number of people present in the space SP1. The number of people present in the space SP1 is the sum of the number of people present in each of the multiple areas.

Hereinafter, the number of people present in the space SP1 is also referred to as the number of people staying in the space SP1, and the number of people present in the area is also referred to as the number of people staying in the area.

The determining unit 65 compares the number of visitors in the space SP1 with the threshold Th1 (step ST13). When the number of people staying in the space SP1 is equal to or greater than the threshold Th1, the determining unit 65 sets all of the plurality of areas as operating areas (step ST14). 5, a command signal indicating the content of control is generated. The communication unit 62 transmits a command signal to the lighting controller 4 (step ST6). On the other hand, when the number of people staying in the space SP1 is smaller than the threshold Th1, the determination unit 65 determines a dimming area from among the plurality of areas (steps ST15 to ST22).

That is, when the number of people present in the space SP1 is less than the threshold Th1, the determination unit 65 determines the dimming area based on the index (the number of people in each area). When the number of people present in the space SP1 is equal to or greater than the threshold value Th1, the determining unit 65 does not set any of the plurality of areas as the dimming area.

The threshold Th1 is pre-stored in the storage unit 63 . The threshold Th1 is set by, for example, a facility administrator operating a predetermined device. The predetermined device is, for example, the decision device 6 or a management terminal owned by the manager of the facility.

In step ST13, when the number of visitors in the space SP1 is smaller than the threshold Th1 (step ST13: No), the determination unit 65 provisionally sets all of the plurality of areas as operating areas (step ST15). Next, the determination unit 65 sorts the plurality of areas based on the number of visitors in each area (step ST16). Areas with fewer people are ranked lower. If there are two or more areas with the same number of visitors, the lower the priority of the area, the lower the priority. A lower area is preferentially set as a dimming area.

In other words, the determining unit 65 preferentially selects an area having a smaller number of people among the plurality of areas as a dimming area. Further, the determining unit 65 preferentially sets the area with the higher priority among the plurality of areas as the dimming area.

[Table 1] is a table before sorting showing a plurality of areas, capacity of each area, number of stayers, and priority. Note that [Table 1] shows another example different from FIG. 2 and does not correspond to FIG. "1" indicates the highest priority, and "6" (the larger the number) indicates the lower priority.

[Table 2] is a sorted table of [Table 1]. That is, sorting is first performed based on the number of visitors, and areas with the same number of visitors are sorted based on priority.

Next, a loop consisting of steps ST17 to ST22 is executed. In the above loop, the determination unit 65 selects areas in sort order (step ST17). That is, the lowest area is selected in the first round of the loop, the second lowest area is selected in the second round, and so on, and the areas are selected in order from the lowest. In the example of [Table 2], areas A3, A2, A1, A6, A5 and A4 are selected in this order.

The determining unit 65 provisionally sets the area selected in step ST17 as the dimming area (step ST18). Next, the determination unit 65 compares the number of people staying in the space SP1 with the total capacity of all the operating areas (step ST19). The operating area in this case does not include the area provisionally set as the dimming area in step ST18. If the number of people staying in the space SP1 is equal to or less than the total capacity of all operating areas, the determination unit 65 formally sets the area selected in step ST17 as a dimming area (step ST20). On the other hand, if the number of people staying in space SP1 is greater than the total capacity of all operating areas, the determination unit 65 formally sets the area selected in step ST17 as the operating area (step ST21).

That is, the determining unit 65 determines the dimming area so that the total capacity of all the areas that are not set as the dimming area among the plurality of areas is greater than or equal to the number of people present in the space SP1. do.

In the first round of the loop, the setting of each area is as shown in [Table 3] at the time of step ST19.

In [Table 3], the total capacity of all operating areas is 38-4 (capacity of dimming area)=34 people, and the number of people staying in space SP1 is 26 people. Therefore, the determination in step ST19 is "Yes", and the area A3 is formally set as the dimming area.

After step ST20 or ST21, the determination unit 65 determines whether the area selected in step ST17 is the last area (step ST22). That is, it is determined whether or not the selected area is at the top in the order sorted in step ST16. The determination unit 65 repeats steps ST17 to ST22 until the selected area becomes the highest area (area A4). As a result, each of the plurality of areas is set as the operating area or the dimming area. After that, the determination unit 65 generates a command signal based on the setting of each area (step ST6). In other words, the determining unit 65 generates a command signal that maintains the illuminance of the lighting load 5 that illuminates the operating area and reduces the illuminance of the lighting load 5 that illuminates the dimmed area.

In the loop of the second round, the setting of each area becomes as shown in [Table 4] at the time of step ST19.

In [Table 4], the total capacity of all operating areas is 38-9 (capacity of dimming area)=29 people, and the number of people staying in space SP1 is 26 people. Therefore, the determination in step ST19 is "Yes", and the area A2 is formally set as the dimming area.

In the third loop, the setting of each area becomes as shown in [Table 5] at the time of step ST19.

In [Table 5], the total capacity of all operating areas is 38-15 (capacity of dimming area) = 23 people, and the number of people staying in space SP1 is 26 people. Therefore, the determination in step ST19 is "No", and area A2 is formally set as an operating area.

Finally, areas A2 and A3 are set as dimming areas, and areas A1 and A4 to A6 are set as operating areas. Therefore, the determining unit 65 generates a command signal for dimming the lighting loads 5 (the plurality of lighting loads 5 included in the groups L2 and L3) that illuminate the areas A2 and A3, and the communication unit 62 generates the command signal to the lighting controller 4 (step ST6).

(6.3) Control of Lighting Load As shown in FIG. 3, the lighting controller 41 of the lighting controller 4 generates a control signal upon receiving the command signal (step ST7). More specifically, the lighting control unit 41 generates and transmits a control signal for reducing the illuminance of the lighting load 5 that illuminates the dimming area (step ST8). Upon receiving the control signal, the lighting load 5 that illuminates the dimming area reduces the illuminance of the lighting load 5 (step ST9). This reduces the illuminance of the dimmed area. The lighting control unit 41 also generates a control signal for maintaining the illuminance of the lighting load 5 that illuminates the operating area.

A person existing in the dimmed areas (areas A2 and A3) moves to the working area when the illuminance of the dimmed areas decreases. As a result, the number of visitors in each area is, for example, as shown in [Table 6].

The lighting control unit 41 may turn off the lighting load 5 that illuminates the dimming area among the plurality of lighting loads 5, or may dim the light within a range in which the lighting load 5 is not turned off.

Further, the lighting control unit 41 may reduce the illuminance of the lighting load 5 that illuminates the dimmed area over time among the plurality of lighting loads 5 . In this case, a person existing in the dimmed area can make preparations for movement while the dimmed area is bright to some extent and move to the working area. For example, the lighting load 5 may be faded out.

In addition, each of the plurality of beacon terminals 2 transmits a beacon signal intermittently, and the position estimation unit 311 of the mobile terminal 3 updates the position information of the mobile terminal 3 each time, and illuminates the position information. Send to control system 1 . The lighting control system 1 periodically updates the details of control over the plurality of lighting loads 5 . Therefore, when one or more people leave the space SP1 and the number of people existing in the space SP1 decreases, a new dimming area can be set.

(7) Machine Learning The lighting control system 1 may perform machine learning in the learning section 66 . The learning unit 66 may generate a learned model for determining the dimming area by machine learning. The determining unit 65 may determine the dimming area using a learned model instead of the flow shown in FIG.

The storage unit 63 stores position information of a plurality of persons acquired by the acquisition unit 64 (position information acquisition unit 641). The learning unit 66 reads the history of position information of a plurality of persons from the storage unit 63 .

The learning unit 66 performs machine learning using the histories of location information of a plurality of people as teacher data, and generates a learned model. For example, the learned model takes as input position information of a plurality of persons obtained by the measurement system 200 and outputs information indicating a dimming area. The location information of the plurality of persons may include identification information of each of the plurality of persons.

That is, the learning unit 66 generates a learned model for the determining unit 65 to determine the dimming area by machine learning based on the history of the positional information acquired by the positional information acquisition unit 641 .

The learning unit 66 generates, for example, a learned model that determines the dimming area so that multiple people can move to the operating area and the movement of multiple people is minimized. However, the trained model generated by the learning unit 66 is not limited to this, and the learning unit 66 may generate other trained models that provide desired results. For example, the learning unit 66 may generate a learned model that determines the dimming area so that a plurality of people can move to the operating area and the power consumption of the plurality of lighting loads 5 is minimized. good.

A machine learning algorithm is, for example, a neural network. However, machine learning algorithms are not limited to neural networks, for example, XGB (eXtreme Gradient Boosting) regression, Random Forest, decision tree, Logistic Regression, support vector machine ( Support vector machine (SVM), Naive Bayes classifier, k-nearest neighbors method, or the like may be used. Furthermore, the machine learning algorithm may be, for example, Gaussian Mixture Model (GMM), k-means clustering, or the like.

Also, the learning unit 66 may update the learned model by performing additional learning.

(Modification of Embodiment 1)
Modifications of the first embodiment are listed below. The following modified examples may be implemented in combination as appropriate.

In step ST13, instead of directly comparing the number of visitors in the space SP1 with the threshold Th1, a value obtained by dividing the number of visitors in the space SP1 by the capacity of the space SP1 may be compared with a predetermined threshold. The capacity of the space SP1 is the total capacity of each of the multiple areas.

If the total capacity of all areas (operating areas) that are not set as a dimming area among the plurality of areas is smaller than the number of people present in the space SP1, the determining unit 65 selects the dimming area. at least one of which may be changed to an operating area. That is, the illuminance of the lighting load 5 that illuminates the at least one dimming area may be increased.

The lighting control system 1 may notify a person existing in the dimmed area that the illuminance of the area will be reduced. The notification may be made to the mobile terminal 3, for example. Alternatively, the lighting control unit 41 may change the lighting state of the lighting load 5 that illuminates the dimmed area to notify that the illuminance of the area is reduced. Changing the lighting state means, for example, blinking the lighting load 5 or changing the color temperature of the lighting load 5 .

The lighting control system 1 may receive a command to exclude a predetermined area from setting the dimming area. For example, when a signal including a command not to set the predetermined area as a dimming area is input from the mobile terminal 3 to the lighting control system 1 by a person operating the mobile terminal 3, the determination unit 65 A dimming area is determined from areas other than a predetermined area.

The lighting control system 1 may include an area setting section for the user to set the range of a plurality of areas. The area setting unit includes a user interface, and the user interface accepts a user's operation for specifying ranges of a plurality of areas.

The lighting control system 1 may include a priority setting section for the user to set the priority of each of the multiple areas. The priority setting unit includes a user interface, and the user interface accepts a user's operation for specifying the priority of each of the multiple areas.

The lighting control system 1 may comprise at least one beacon terminal 2 .

The lighting control system 1 may comprise at least one mobile terminal 3 .

The relationship between the dimming rate and the illuminance of the lighting load 5 may be opposite to that of the first embodiment. That is, the illuminance of the lighting load 5 may decrease as the dimming rate increases.

The lighting load 5 is not limited to a device capable of dimming, and may be a device capable of switching between lighting and extinguishing.

The position estimation unit 311 of the measurement system 200 may calculate the position of the mobile terminal 3 based on the phase of the beacon signal instead of the received signal strength of the beacon signal.

The position estimation unit 311 is not limited to being provided in the mobile terminal 3, and may be provided in the beacon terminal 2 or the determination device 6, for example. The position estimating unit 311 may calculate the position of the mobile terminal 3 by summarizing the received signal strength or phase information of the beacon signal in the mobile terminal 3 .

In Embodiment 1, the determination unit 65 of the determination device 6 determines the dimming area from among all areas. On the other hand, the determination unit 65 may determine the dimming area from among the areas illuminated by the lighting load 5 whose dimming rate is within a predetermined range.

In Embodiment 1, the determination unit 65 of the determination device 6 determines the dimming area, and based on this, the determination unit 65 determines the details of control for the plurality of lighting loads 5 . On the other hand, the lighting controller 4 may include the determination section 65 .

The beacon terminal 2, mobile terminal 3, decision device 6, lighting controller 4 and lighting load 5 of Embodiment 1 each include a computer system having one or more processors and memory. A computer system is mainly composed of a processor and a memory as hardware. At least part of the function of each of the beacon terminal 2, the mobile terminal 3, the decision device 6, the lighting controller 4 and the lighting load 5 is realized by the processor executing a program recorded in the memory of the computer system. The program may be recorded in advance in the memory of the computer system, may be provided through an electric communication line, or may be recorded in a non-temporary recording medium such as a computer system-readable memory card, optical disk, or hard disk drive. may be provided. A processor in a computer system consists of one or more electronic circuits, including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuit such as IC or LSI referred to here is called differently depending on the degree of integration, and includes integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). In addition, a field-programmable gate array (FPGA) that is programmed after the LSI is manufactured, or a logic device capable of reconfiguring the bonding relationship inside the LSI or reconfiguring the circuit partitions inside the LSI may also be adopted as the processor. can be done. A plurality of electronic circuits may be integrated into one chip, or may be distributed over a plurality of chips. A plurality of chips may be integrated in one housing, or may be distributed in a plurality of housings. A computer system, as used herein, includes a microcontroller having one or more processors and one or more memories. Accordingly, the microcontroller also consists of one or more electronic circuits including semiconductor integrated circuits or large scale integrated circuits.

In addition, it is not an essential configuration of the lighting control system 1 that a plurality of functions in the lighting control system 1 are integrated into one housing, and the components of the lighting control system 1 are distributed over a plurality of housings. may be provided. Furthermore, at least part of the functions of the lighting control system 1, for example, at least part of the functions of the decision device 6, may be realized by the cloud (cloud computing) or the like.

Conversely, in Embodiment 1, at least part of the functions of the integrated system 100 that are distributed over multiple housings may be integrated into one housing. For example, the acquisition unit 64, the determination unit 65, and the lighting control unit 41 may be provided in one housing.

Also, a program for realizing the functions of the mobile terminal 3 may be provided to the mobile terminal 3 . A program according to one aspect is a program for causing one or more processors of the mobile terminal 3 to execute a receiving step, an estimating step, and a transmitting step. In the receiving step, a beacon signal is received from at least one of the beacon terminals 2 . In the estimation step, based on the beacon signal received in the reception step, the position of the mobile terminal 3 is estimated to generate position information. At the transmission step, the position information generated at the estimation step is transmitted to the lighting control system 1 .

(Embodiment 2)
A lighting control system 1A and an integrated system 100A according to the second embodiment will be described below with reference to FIG. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted. Further, each modification of the first embodiment can also be applied to the second embodiment as appropriate.

The lighting control system 1</b>A further includes a plurality of lighting loads 5</b>A and a position estimator 311 . The position estimation unit 311 generates position information indicating positions of a plurality of persons. One or more lighting loads 5A among the plurality of lighting loads 5A receive beacon signals transmitted from the beacon terminals 2 carried by each of the plurality of persons. The position estimator 311 estimates the positions of a plurality of people based on the beacon signals received by one or more lighting loads 5A and generates position information.

The beacon terminal 2 of Embodiment 1 was assumed to be installed on the ceiling of the facility. On the other hand, the beacon terminal 2 of this embodiment is portable. In this embodiment, each of the plurality of persons carries a beacon terminal 2 instead of the mobile terminal 3 (see FIG. 1). In this embodiment, one or more lighting loads 5A receive beacon signals, so compared to the first embodiment, the number of devices included in the integrated system 100A can be reduced.

The integrated system 100A includes a lighting control system 1A and multiple beacon terminals 2 . The lighting control system 1A includes a plurality of lighting loads 5A, a lighting controller 4, and a decision device 6A.

The functions of each beacon terminal 2 and lighting controller 4 are the same as in the first embodiment.

In each of the plurality of lighting loads 5A, the controller 51A functions as a reception processor 511. FIG. The reception processing unit 511 generates reception information related to reception of the beacon signal when the communication unit 52 receives the beacon signal. The received information is, for example, received signal strength. That is, the reception processing unit 511 measures the received signal strength of the beacon signal. The communication unit 52 transmits the value of the received signal strength to the communication unit 62 of the determination device 6A. The reception information may be the phase of the beacon signal.

In the determination device 6A, the control section 61A has a function as the position estimation section 311. FIG. In other words, in the present embodiment, the position estimation unit 311 is provided not in the mobile terminal 3 but in the determination device 6A. The position estimation unit 311 measures the position of each beacon terminal 2 as the position of the person carrying the beacon terminal 2 . The position estimator 311 measures the position of the beacon terminal 2 (person) based on the received signal intensity value transmitted from each of the plurality of lighting loads 5A, and generates position information indicating the position of the person.

The index generator 67 obtains an index (the number of people in each area) based on the position information generated by the position estimator 311, as in the first embodiment. Then, the determination unit 65 determines the dimming area based on the index.

(Embodiment 3)
A lighting load 5B, a lighting control system 1B, and an integrated system 100B according to the third embodiment will be described below with reference to FIG. Configurations similar to those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted. Further, each modification of the first embodiment can also be applied to the third embodiment as appropriate.

The lighting load 5B is used as one of a plurality of lighting loads 5B controlled by the lighting control system 1B. The lighting load 5B has a function as one beacon terminal 2 out of a plurality of beacon terminals 2 (see FIG. 1).

The integrated system 100B includes a lighting control system 1B and a plurality of mobile terminals 3. The lighting control system 1B includes a plurality of lighting loads 5B, a lighting controller 4, and a decision device 6.

The functions of each mobile terminal 3, lighting controller 4, and decision device 6 are the same as in the first embodiment.

The controller 51B functions as a beacon controller 512 in each of the plurality of lighting loads 5B. The beacon control unit 512 causes the communication unit 52 to transmit a beacon signal. The communication unit 52 intermittently transmits beacon signals.

The position estimator 311 of the mobile terminal 3 obtains the position of the mobile terminal 3 based on the beacon signals received from the plurality of lighting loads 5B. The communication unit 32 of the mobile terminal 3 transmits position information indicating the position of the mobile terminal 3 to the determination device 6 .

According to this embodiment, since the lighting load 5B has the function as the beacon terminal 2, the number of the beacon terminals 2 can be reduced. In addition, although the number of the beacon terminals 2 is 0 in FIG. 6, one or more beacon terminals 2 may be provided. Then, the position estimator 311 may obtain the position of the mobile terminal 3 based on the beacon signals received by the one or more beacon terminals 2 and the one or more lighting loads 5B.

(summary)
The following aspects are disclosed from the embodiments and the like described above.

A lighting control system (1, 1A, 1B) according to a first aspect is a lighting control system that controls a plurality of lighting loads (5, 5A, 5B) that illuminate a space (SP1) in which a plurality of people are present. (1, 1A, 1B). The lighting control system (1, 1A, 1B) comprises an acquisition section (64), a determination section (65), and a lighting control section (41). An acquisition unit (64) acquires information on an index of the number of people present in each of a plurality of areas included in the space (SP1). A determination unit (65) determines, based on the index, a part of the plurality of areas as a dimming area whose illuminance is to be reduced. A lighting control unit (41) reduces the illuminance of a lighting load (5, 5A, 5B) that illuminates a dimming area among the plurality of lighting loads (5, 5A, 5B).

According to the above configuration, it is possible to reduce the illuminance of some of the plurality of lighting loads (5, 5A, 5B) according to the index of the number of people in each area. can. Therefore, energy saving can be realized compared with the case of maintaining the illuminance of all the lighting loads (5, 5A, 5B) among the plurality of lighting loads (5, 5A, 5B).

Further, in the lighting control system (1, 1A, 1B) according to the second aspect, in the first aspect, the determination unit (65) determines that the number of people present in the space (SP1) is less than the threshold In this case, the dimming area is determined based on the index. When the number of people present in the space (SP1) is equal to or greater than the threshold, the determination unit (65) does not set any of the plurality of areas as the dimming area.

According to the above configuration, the illuminance of some of the lighting loads (5, 5A, 5B) can be reduced only when the number of people present in the space (SP1) is relatively small. Therefore, it is possible to prevent the illuminance of the lighting loads (5, 5A, 5B) from being lowered more than necessary.

In addition, in the lighting control system (1, 1A, 1B) according to the third aspect, in the first or second aspect, the determination unit (65) selects an area where the number of people present among the plurality of areas is small. The darker area is given priority as much as possible.

According to the above configuration, it is possible to efficiently illuminate the space (SP1) by reducing the illuminance of the lighting loads (5, 5A, 5B) in areas with relatively few people.

Moreover, the lighting control system (1, 1A, 1B) according to the fourth aspect, in any one of the first to third aspects, further includes a priority storage unit (631). A priority storage unit (631) stores the priority of each of a plurality of areas. A determination unit (65) preferentially selects an area having a higher priority among a plurality of areas as a dimming area.

According to the above configuration, a specific area can be preferentially set as a dimming area.

Moreover, the lighting control system (1, 1A, 1B) according to the fifth aspect, in any one of the first to fourth aspects, further includes a seating capacity storage unit (632). The seating capacity storage unit (632) stores the seating capacity of each of a plurality of areas. A determination unit (65) selects a dimming area so that the total capacity of all areas that are not set as a dimming area out of the plurality of areas is greater than or equal to the number of people present in the space (SP1). to decide.

According to the above configuration, it is possible to maintain the illuminance of a sufficient number of lighting loads (5, 5A, 5B) for all the people present in the space (SP1).

Further, the lighting control system (1, 1A, 1B) according to the sixth aspect is the lighting control system (1, 1A, 1B) according to any one of the first to fifth aspects, comprising Prepare more. A positional information acquisition unit (641) acquires positional information of a person existing in each of a plurality of areas. A learning unit (66) generates a learned model for the determination unit (65) to determine the dimming area by machine learning based on the history of position information acquired by the position information acquisition unit (641).

According to the above configuration, the determination unit (65) can determine which area should be the dimming area using the learned model.

Further, in the lighting control system (1, 1A, 1B) according to the seventh aspect, in any one of the first to sixth aspects, the lighting control section (41) controls the plurality of lighting loads (5, 5A, 5B), the illuminance of the lighting load (5, 5A, 5B) that illuminates the dimmed area is reduced over time.

According to the above configuration, when a certain area is selected as a dimming area, the lighting load (5, 5A, 5B) that illuminates the dimming area is suddenly turned off, compared to the case where the dimming area It is difficult for people who exist in

Further, in the lighting control system (1, 1A, 1B) according to the eighth aspect, in any one of the first to seventh aspects, the acquisition unit (64), the determination unit (65), and the lighting control unit (41) is provided on one housing.

According to the above configuration, an integrated lighting control system (1, 1A, 1B) can be provided.

Also, the lighting control system (1) according to the ninth aspect is used together with a plurality of beacon terminals (2) capable of transmitting beacon signals in any one of the first to eighth aspects. The lighting control system (1) further comprises an index generator (67) for generating indices. Each of the plurality of beacon terminals (2) can transmit beacon signals to mobile terminals (3) carried by each of the plurality of persons. The mobile terminal (3) generates location information of the mobile terminal (3) based on the beacon signal. An index generator (67) generates an index based on the location information acquired from the mobile terminal (3).

According to the above configuration, position information of a plurality of persons can be obtained.

Further, the lighting control system (1A) according to the tenth aspect, in any one of the first to eighth aspects, further includes a plurality of lighting loads (5A) and a position estimator (311). A position estimation unit (311) generates position information indicating the positions of a plurality of people. One or more lighting loads (5A) among the plurality of lighting loads (5A) receive beacon signals transmitted from beacon terminals (2) carried by each of the plurality of persons. A position estimator (311) estimates the positions of a plurality of people and generates position information based on the beacon signals received by one or more lighting loads (5A).

According to the above configuration, since the lighting load (5A) has a function as a device for receiving beacon signals, the number of devices used for positioning can be reduced.

Configurations other than the first aspect are not essential configurations for the lighting control system (1, 1A, 1B), and can be omitted as appropriate.

Also, the lighting load (5B) according to the eleventh aspect is used as one of the plurality of lighting loads (5B) controlled by the lighting control system (1B) according to the ninth aspect. A lighting load (5B) has a function as one beacon terminal (2) of a plurality of beacon terminals (2).

According to said structure, since lighting load (5B) has a function as a beacon terminal (2), the number of beacon terminals (2) can be reduced.

Further, the decision device (6, 6A) according to the twelfth aspect is a decision device (6 , 6A). The decision device (6, 6A) comprises an acquisition section (64) and a decision section (65). An acquisition unit (64) acquires information on an index of the number of people present in each of a plurality of areas included in the space (SP1). A determination unit (65) determines, based on the index, a part of the plurality of areas as a dimming area whose illuminance is to be reduced.

According to said structure, energy saving is realizable.

A control method according to a thirteenth aspect is a control method for controlling a plurality of lighting loads (5, 5A, 5B) that irradiate a space (SP1) where a plurality of people are present with light. The control method has an acquisition step, a determination step, and an illumination control step. The acquisition step acquires information on an index of the number of people present in each of the plurality of areas included in the space (SP1). In the determining step, based on the index, a part of the plurality of areas is determined as a dimming area to be reduced in illuminance. In the lighting control step, among the plurality of lighting loads (5, 5A, 5B), the illuminance of the lighting loads (5, 5A, 5B) that illuminate the dimming area is reduced.

According to said structure, energy saving is realizable.

A program according to a fourteenth aspect is a program for causing one or more processors to execute the control method according to the thirteenth aspect.

According to said structure, energy saving is realizable.

Further, the program according to the fifteenth aspect is configured such that one or more processors included in the mobile terminal (3) used together with the lighting control system (1, 1A, 1B) according to the ninth aspect include a receiving step, an estimating step, and , a transmission step, and the like. In the receiving step, a beacon signal is received from at least one of the plurality of beacon terminals (2). In the estimation step, based on the beacon signal received in the reception step, the position of the mobile terminal (3) is estimated to generate position information. In the transmission step, the position information generated in the estimation step is transmitted to the lighting control system (1, 1A, 1B).

According to the above configuration, the mobile terminal (3) can be positioned by installing a program in the mobile terminal (3).

Not limited to the above aspect, various configurations (including modifications) of the lighting control system (1, 1A, 1B) according to the embodiment may be a control method, a (computer) program, or a non-temporary recording medium recording the program. It can be embodied in

1, 1A, 1B Lighting control system 2 Beacon terminal 3 Portable terminals 5, 5A, 5B Lighting loads 6, 6A Determination device 41 Lighting control unit 64 Acquisition unit 65 Determination unit 66 Learning unit 67 Index generation unit 631 Priority storage unit 632 Capacity Storage unit 641 Position information acquisition unit 311 Position estimation unit SP1 Space

Claims (15)

A lighting control system for controlling a plurality of lighting loads that irradiate a space in which a plurality of people are present,
an acquisition unit that acquires information about an index of the number of people present in each of a plurality of areas included in the space;
a determination unit that determines, based on the index, a part of the plurality of areas as a dimming area to be reduced in illuminance;
a lighting control unit that reduces the illuminance of a lighting load that illuminates the dimming area among the plurality of lighting loads;
lighting control system. The decision unit
determining the dimming area based on the index when the number of people present in the space is less than a threshold;
When the number of people present in the space is equal to or greater than the threshold, none of the plurality of areas is set as the dimming area.
A lighting control system according to claim 1 . The determining unit preferentially selects an area in which the number of people present among the plurality of areas is small as the dimming area,
3. The lighting control system according to claim 1 or 2. Further comprising a priority storage unit that stores the priority of each of the plurality of areas,
The determining unit preferentially selects an area with a higher priority among the plurality of areas as the dimming area,
The lighting control system according to any one of claims 1-3. Further comprising a capacity storage unit that stores the capacity of each of the plurality of areas,
The determining unit determines the dimming area so that the total capacity of all areas not set as the dimming area among the plurality of areas is greater than or equal to the number of people present in the space. decide,
The lighting control system according to any one of claims 1-4. a location information acquiring unit that acquires location information of a person existing in each of the plurality of areas;
a learning unit that generates a learned model for the determination unit to determine the dimming area by machine learning based on the history of the position information acquired by the position information acquisition unit;
The lighting control system according to any one of claims 1-5. The lighting control unit reduces, over time, the illuminance of a lighting load that illuminates the dimming area, among the plurality of lighting loads.
The lighting control system according to any one of claims 1-6. The acquisition unit, the determination unit, and the lighting control unit are provided in one housing,
The lighting control system according to any one of claims 1-7. used with a plurality of beacon terminals capable of transmitting beacon signals;
further comprising an index generation unit that generates the index;
each of the plurality of beacon terminals is capable of transmitting the beacon signal to a mobile terminal carried by each of the plurality of persons;
The mobile terminal generates location information of the mobile terminal based on the beacon signal,
wherein the index generation unit generates the index based on the location information obtained from the mobile terminal;
The lighting control system according to any one of claims 1-8. the plurality of lighting loads;
A position estimation unit that generates position information indicating the positions of the plurality of people,
one or more lighting loads among the plurality of lighting loads receive a beacon signal transmitted from a beacon terminal carried by each of the plurality of persons;
The position estimating unit estimates the positions of the plurality of people based on the beacon signals received by the one or more lighting loads to generate the position information.
The lighting control system according to any one of claims 1-8. A lighting load controlled by the lighting control system of claim 9 and used as one of the plurality of lighting loads,
The lighting load has a function as one beacon terminal of the plurality of beacon terminals,
lighting load. A decision device for controlling a plurality of lighting loads that illuminate a space in which a plurality of people are present,
an acquisition unit that acquires information about an index of the number of people present in each of a plurality of areas included in the space;
a determination unit that determines, based on the index, a part of the plurality of areas as a dimming area to be reduced in illuminance;
decision device. A control method for controlling a plurality of lighting loads that irradiate a space in which a plurality of people are present,
an obtaining step of obtaining information about an indicator of the number of people present in each of a plurality of areas included in the space;
a determination step of determining, based on the index, a part of the plurality of areas as a dimming area to be reduced in illuminance;
and a lighting control step of reducing the illuminance of a lighting load that illuminates the dimming area, among the plurality of lighting loads.
control method. for causing one or more processors to execute the control method according to claim 13,
program. One or more processors of the mobile terminal used with the lighting control system according to claim 9,
a receiving step of receiving the beacon signal from at least one of the plurality of beacon terminals;
an estimation step of estimating the position of the mobile terminal and generating the position information based on the beacon signal received in the receiving step;
a transmitting step of transmitting the position information generated in the estimating step to the lighting control system;
program.

Images