Lighting control system and lighting control method

Abstract

To provide a lighting control system 1 that can secure communication between a sensor and a lighting fixture, alleviate communication congestion, and control the lighting fixture more accurately than before without using a repeater, even when the lighting fixture is not powered or the lighting fixture cannot communicate.SOLUTION: A lighting control system includes: a plurality of lighting fixtures including a first lighting fixture 20 and a second lighting fixture 30; and a sensor 40 that transmits sensor information to the plurality of lighting fixtures when an object is detected. The second lighting fixture 30 transmits a lighting control signal to the plurality of lighting fixtures when the lighting control signal for controlling a plurality of lightings transmitted when the first lighting fixture 20 receives the sensor information is not received, after the sensor information is received.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a lighting control system and a lighting control method. [Background technology]

[0002] In recent years, technology for controlling lighting fixtures in conjunction with sensors, etc. has been used in offices, stores, etc. Patent Document 1 discloses technology relating to a lighting control system in which terminals include sensors and lighting fixtures, etc., and the terminal closest to a terminal with which communication is not possible is used as a communication repeater. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-347066 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above conventional technology, when there are multiple communication paths, it is difficult to set up a repeater. In addition, when the lighting fixtures linked to the sensor are fixed, there is a problem that the operation of the lighting fixtures by the sensor depends on the communication status of the lighting fixtures or on / off of the power. In addition, when there are multiple lighting fixtures linked to the sensor, there is a problem that communication congestion occurs when each lighting fixture transmits a lighting control command using the sensor value as a trigger.

[0005] Therefore, the present disclosure provides a lighting control system that can control lighting fixtures more accurately than before by ensuring communication between sensors and lighting fixtures and alleviating communication congestion even when the lighting fixtures are not turned on or are unable to communicate. [Means for solving the problem]

[0006] A lighting control system according to one embodiment of the present disclosure includes a plurality of lighting fixtures including a first lighting fixture and a second lighting fixture, and a sensor that transmits sensor information to the plurality of lighting fixtures when an object is detected, and after receiving the sensor information, if the second lighting fixture does not receive a lighting control signal for controlling the plurality of lighting fixtures that is transmitted when the first lighting fixture receives the sensor information, the second lighting fixture transmits the lighting control signal to the plurality of lighting fixtures.

[0007] A lighting control method according to one embodiment of the present disclosure is a control method for a lighting control system including a plurality of lighting fixtures including a first lighting fixture and a second lighting fixture, and a sensor that transmits sensor information to the plurality of lighting fixtures upon detecting an object, wherein after receiving the sensor information, if the second lighting fixture does not receive a lighting control signal for controlling the plurality of lighting fixtures that is transmitted when the first lighting fixture receives the sensor information, the second lighting fixture transmits the lighting control signal to the plurality of lighting fixtures.

[0008] In addition, these comprehensive or specific aspects may be realized by an apparatus, a method, an integrated circuit, a computer program, or a recording medium such as a computer-readable CD-ROM, or may be realized by any combination of an apparatus, a method, an integrated circuit, a computer program, and a recording medium. Effect of the Invention

[0009] A lighting control system according to one embodiment of the present disclosure can ensure communication between a sensor and a lighting fixture even when the lighting fixture is not turned on or is unable to communicate, thereby alleviating communication congestion and enabling control of the lighting fixture with greater precision than conventional methods without using a repeater. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram of a lighting control system according to an embodiment. [Diagram 2]FIG. 2 is a flowchart showing an operation of transmitting lighting control signals based on priority order in the lighting control system according to the embodiment. [Diagram 3] FIG. 3 is a sequence diagram of a process including selection of a second lighting fixture in the lighting control system according to the embodiment. [Figure 4] FIG. 4 shows an example of a display when processing including selection of a second lighting fixture is performed on an operation terminal of a lighting control system in an embodiment. [Diagram 5] FIG. 5 is a sequence diagram of a process including selection of a second lighting fixture by area in a lighting control system according to an embodiment. [Figure 6] FIG. 6 shows an example of a display when processing includes selection of a second lighting fixture by area of ​​an operation terminal of a lighting control system in an embodiment. [Figure 7] FIG. 7 is a sequence diagram of a process including selection of a second lighting fixture through communication between lighting fixtures in a lighting control system according to an embodiment. [Figure 8] FIG. 8 shows an example of a display when processing including selection of a second lighting fixture through communication with a lighting fixture of an operation terminal of a lighting control system in an embodiment. [Figure 9] FIG. 9 is a sequence diagram of a process including selection of a second lighting fixture based on sensor information of lighting fixtures in a lighting control system according to an embodiment. [Figure 10] FIG. 10 shows an example of a display during processing including selection of a second lighting fixture based on sensor information in an operation terminal of a lighting control system in an embodiment. [Figure 11] FIG. 11 is a flowchart illustrating the operation of the first lighting fixture in the lighting control system according to the embodiment. [Figure 12] FIG. 12 is a flowchart illustrating the operation of the second lighting fixture in the lighting control system according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiment will be described in detail with reference to the drawings.

[0012] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, the arrangement and connection of the components, steps, and the order of steps shown in the following embodiments are merely examples and are not intended to limit the scope of the claims. Furthermore, among the components according to the following embodiments, those components that are not described in the independent claims showing the highest concept are described as optional components. Furthermore, each figure is not necessarily a strict illustration. In each figure, substantially the same configuration is given the same reference numeral, and duplicated explanations are omitted or simplified.

[0013] In addition, each drawing is a schematic diagram and is not necessarily a precise illustration. In each drawing, the same reference numerals are used for substantially the same configurations, and duplicated explanations may be omitted or simplified.

[0014] (Embodiment) [Lighting control system overview] First, an overview of a lighting control system according to an embodiment will be described. Fig. 1 is a block diagram of a lighting control system 1 according to an embodiment.

[0015] Lighting control system 1 includes an operation terminal 10, a first lighting fixture 20, a second lighting fixture 30, and a sensor 40. Of these, operation terminal 10, first lighting fixture 20, and second lighting fixture 30 are included in a lighting control network 100. Lighting control system 1 may include further lighting fixtures in addition to first lighting fixture 20 and second lighting fixture 30. The multiple lighting fixtures included in lighting control system 1 may be connected to each other by wires and to a power grid.

[0016] In the lighting control system 1, a plurality of lighting fixtures including a first lighting fixture 20 and a second lighting fixture 30 receive a signal detected by a sensor 40, and among the plurality of lighting fixtures capable of transmitting a signal, the lighting fixture with the highest priority transmits a lighting control signal to the other lighting fixtures using the signal received from the sensor 40 as a trigger.

[0017] [Operation terminal] Operation terminal 10 receives an operation from a user and transmits control signals and the like to a plurality of lighting fixtures including first lighting fixture 20 and second lighting fixture 30 in response to the received user operation. Operation terminal 10 is, for example, a mobile terminal such as a smartphone, a tablet terminal, or a personal digital assistant (PDA), but may also be a stationary terminal such as a personal computer. Operation terminal 10 may also be a dedicated remote controller used in lighting control system 1.

[0018] The operation terminal 10 includes an acquisition unit 11, a display unit 12, a terminal communication unit 13, a terminal control unit 14, and a terminal storage unit 15.

[0019] The acquisition unit 11 receives operations from a user. Specifically, the acquisition unit 11 is configured with a touch panel or the like.

[0020] The display unit 12 is a display device that displays an image based on the control of the terminal control unit 14. The display unit 12 is realized by, for example, a liquid crystal panel or an organic EL (Electro Luminescence) panel.

[0021] Terminal communication unit 13 is a wireless communication circuit that enables acquisition unit 11 to wirelessly communicate with sensor 40, first lighting fixture 20, second lighting fixture 30, etc. Terminal communication unit 13 transmits control signals to first lighting fixture 20 and second lighting fixture 30, for example.

[0022] The terminal control unit 14 causes the terminal communication unit 13 to transmit a control signal in response to the user's operation accepted by the acquisition unit 11. The terminal control unit 14 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit.

[0023] The terminal storage unit 15 is a storage device that stores the control program and the like executed by the terminal control unit 14. The terminal storage unit 15 is realized by, for example, a semiconductor memory.

[0024] [Lighting fixtures] Next, the lighting fixtures will be described. Specifically, the lighting fixtures include a first lighting fixture 20 and a second lighting fixture 30. The lighting fixtures are so-called ceiling lights that illuminate a room.

[0025] The lighting fixture is not limited to a ceiling light having a rectangular shape in a plan view, and may be a ceiling light, a spotlight, a base light, a downlight, etc. having a circular shape in a plan view. The lighting fixtures including the first lighting fixture 20 and the second lighting fixture 30 may receive a signal from the operation terminal 10 or the like or a signal from the sensor 40 and irradiate light.

[0026] First communication unit 21 is a wireless communication circuit for wirelessly communicating with operation terminal 10, sensor 40, second lighting fixture 30, etc. First communication unit 21 receives a control signal from operation terminal 10 and transmits a control signal to second lighting fixture 30, for example. First communication unit 21 may be a communication circuit for wired communication. Second communication unit 31 is similar to first communication unit 21.

[0027] The first light source unit 22 is a white light source for illumination that emits light by a voltage and a current supplied from a light emission control circuit. Here, the light emission control circuit is a dimming circuit such as a PWM (Pulse Width Modulation) control circuit that supplies a voltage and a current to the first light source unit 22 based on the control of the first control unit 23.

[0028] Specifically, the first light source section 22 is realized by a fluorescent tube or an LED, etc. The first light source section 22 may be a semiconductor light emitting element such as a semiconductor laser, or a solid-state light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL.

[0029] The second light source unit 32 is a white light source for illumination that emits light by a voltage and a current supplied from a light emission control circuit, similar to the first light source unit 22. Here, the light emission control circuit is a dimming circuit such as a PWM (Pulse Width Modulation) control circuit that supplies a voltage and a current to the second light source unit 32 based on the control of the second control unit 33.

[0030] Specifically, the second light source unit 32 is realized by a fluorescent tube or an LED, etc. The second light source unit 32 may be a semiconductor light emitting element such as a semiconductor laser, or a solid-state light emitting element such as an organic EL (Electro Luminescence) or inorganic EL.

[0031] The first control unit 23 performs light emission control of the first light source unit 22 via the light emission control circuit based on the command received by the first communication unit 21. The light emission control is, for example, dimming control including turning on and off the light, but may also be color adjustment control if the first light source unit 22 supports color adjustment. The light emission control may also be schedule control that controls the first light source unit 22 based on a schedule. The first control unit 23 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit.

[0032] The second control unit 33, like the first control unit 23, controls the light emission of the second light source unit 32 via the light emission control circuit based on the command received by the second communication unit 31. The light emission control is, for example, dimming control including turning on and off the light, but may also be color adjustment control if the second light source unit 32 supports color adjustment. The light emission control may also be schedule control that controls the second light source unit 32 based on a schedule. The second control unit 33 is realized, for example, by a microcomputer, but may also be realized by a processor or a dedicated circuit.

[0033] First storage unit 24 is a storage device that stores a control program executed by first control unit 23, dimming parameters, schedule information, and the like. First storage unit 24 also stores the MAC address of first lighting device 20. The MAC address is an example of identification information. First storage unit 24 is realized by, for example, a semiconductor memory.

[0034] Similar to first storage unit 24, second storage unit 34 is a storage device that stores a control program executed by second control unit 33, dimming parameters, schedule information, etc. Second storage unit 34 also stores the MAC address of second lighting device 30. The MAC address is an example of identification information. Second storage unit 34 is realized by, for example, a semiconductor memory.

[0035] [Sensor] Next, a description will be given of the sensor 40. The sensor 40 is included in the lighting control system 1, and is installed near the lighting fixture. Note that the sensor 40 does not have to be installed near the lighting fixture, and may be installed at a certain distance away.

[0036] When the sensor 40 detects an object to be detected, the sensor 40 transmits a signal to the plurality of lighting fixtures. The plurality of lighting fixtures perform lighting control using the signal received from the sensor 40 as a trigger. The sensor 40 may transmit a lighting control signal to the plurality of lighting fixtures.

[0037] The sensor 40 is, for example, a human presence sensor, an illuminance sensor, a temperature and humidity sensor, and an air quality sensor.

[0038] The sensor communication unit 41 is a wireless communication circuit for wirelessly communicating with the operation terminal 10, the first lighting fixture 20, the second lighting fixture 30, etc. The sensor communication unit 41 may transmit a signal to the first lighting fixture 20 and the second lighting fixture 30 when the detection unit 42 detects an object, for example.

[0039] The detection unit 42 is a detection circuit for detecting an object. For example, when the sensor 40 is a human sensor, the detection unit 42 is an infrared sensor. Specifically, the infrared sensor detects the amount of change in infrared rays.

[0040] For example, when the sensor 40 is an illuminance sensor, the detection unit 42 is a phototransistor, a photodiode, etc. Specifically, the phototransistor, the photodiode, etc. converts received light into an electric current.

[0041] For example, when the sensor 40 is a temperature and humidity sensor, the detection unit 42 is a resistor, a thermistor, or a capacitor having a polymeric humidity-sensitive film, etc. The resistor, thermistor, or a capacitor having a polymeric humidity-sensitive film, etc. measures the electrical resistance, etc. of the detection target, or measures the electrostatic capacitance of the capacitor.

[0042] When the detection unit 42 detects an object, the sensor control unit 43 causes the sensor communication unit 41 to transmit a signal. When the detection unit 42 detects an object, the sensor control unit 43 may generate a lighting control signal to be transmitted to the first lighting device 20 and the second lighting device 30. The sensor control unit 43 may also control the on / off of the detection operation of the detection unit 42. The sensor control unit 43 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit.

[0043] The sensor storage unit 44 is a storage device that stores a control program and the like executed by the sensor control unit 43. The first storage unit 24 is realized by, for example, a semiconductor memory.

[0044] [Lighting control system priority-based lighting control signal transmission operation] Next, a description will be given of a priority-based lighting control signal transmission operation performed by the lighting control system 1. Fig. 2 is a flowchart showing a priority-based lighting control signal transmission operation of the lighting control system in the embodiment.

[0045] First, the operation terminal 10 assigns priorities to each of the plurality of lighting fixtures (step S10).

[0046] The lighting fixture determines whether or not it has received sensor information transmitted from the sensor 40 (step S11). Here, the sensor information may be a sensor value when the sensor 40 detects an object, or a signal indicating that the sensor 40 has detected an object. The sensor information may also include a lighting control signal.

[0047] When the lighting fixture determines that it has received the sensor information transmitted from the sensor 40 (Yes in step S11), the multiple lighting fixtures wait for a certain period of time (step S12). Note that the lighting fixture with the first priority does not need to perform the process of step S12.

[0048] When the lighting fixture determines that it has not received sensor information transmitted from the sensor 40 (No in step S11), the process returns to step S11.

[0049] After step S12, the lighting fixture determines whether or not it has received a lighting control signal from a lighting fixture with a higher priority than itself (step S13).

[0050] When a lighting fixture determines that it has received a lighting control signal from a lighting fixture with a higher priority than itself (Yes in step S13), it returns to step S11. In other words, when a lighting fixture determines that it has received a lighting control signal from a lighting fixture with a higher priority than itself, it does not transmit a lighting control signal. In this case, the lighting fixture does not need to transmit data including sensor information, information regarding priority, information regarding the lighting fixture's address, etc. together with the lighting control signal.

[0051] If the lighting fixture determines that it has not received a lighting control signal from a lighting fixture with a higher priority (No in step S13), the lighting fixture transmits a lighting control signal (step S14).

[0052] Here, the lighting fixture may transmit data including sensor information, priority information, or lighting fixture address information together with the lighting control signal.

[0053] After step S14, the process returns to step S11.

[0054] [Selection of second lighting fixture] Next, a description will be given of the selection of second lighting fixture 30 in lighting control system 1. Fig. 3 is a sequence diagram of a process including second lighting fixture selection in the lighting control system according to the embodiment.

[0055] First, the terminal control unit 14 of the operation terminal 10 displays a setting screen on the display unit 12 (step S20).

[0056] Fig. 4 shows an example of a display during processing including selection of a second lighting fixture on an operation terminal of a lighting control system in an embodiment. Operation terminal 10 displays a setting screen as shown in (a) of Fig. 4 on display unit 12. For example, display unit 12 of operation terminal 10 may display a map showing an outline of the relative positions of the lighting fixtures and a cursor.

[0057] Next, terminal control unit 14 of operation terminal 10 accepts a user's operation to select first lighting fixture 20 (step S21). The user manually selects first lighting fixture 20 from among the multiple lighting fixtures displayed on the setting screen as shown in (a) of FIG.

[0058] For example, the user may select a lighting fixture close to the installation location of the sensor 40 as the first lighting fixture. Note that, although the lighting fixtures are displayed as a map in the example shown in Fig. 4(a), the display of the lighting fixtures on the setting screen is not limited to this. The display on the setting screen may be a list displaying the installation locations and the IDs of the lighting fixtures, etc.

[0059] Next, terminal control unit 14 of operation terminal 10 sets first lighting fixture 20 (step S22). Operation terminal 10 sets the first lighting fixture based on the user's selection operation accepted in step S21. For example, operation terminal 10 stores the individual address of the first lighting fixture in a predetermined area of ​​terminal storage unit 15.

[0060] Next, terminal control unit 14 of operation terminal 10 searches for and sets second lighting fixture 30 (step S23).

[0061] For example, terminal control unit 14 of operation terminal 10 may accept a manual selection of second lighting device 30 by the user and set second lighting device 30. In this case, the user selects second lighting device 30 on a setting screen such as that shown in (a) of FIG.

[0062] Furthermore, for example, terminal control unit 14 of operation terminal 10 may automatically search for and set second lighting fixture 30 without accepting a selection operation from the user. Specifically, operation terminal 10 may select a lighting fixture adjacent to first lighting fixture 20 as second lighting fixture 30. If there are multiple lighting fixtures adjacent to first lighting fixture 20, the second lighting fixture may be selected in the order of the MAC addresses assigned to the corresponding multiple lighting fixtures.

[0063] Alternatively, terminal control unit 14 of operation terminal 10 may select as the second lighting fixture a lighting fixture that belongs to a power supply system different from that of first lighting fixture 20. When there are multiple lighting fixtures that belong to a power supply system different from that of first lighting fixture 20, terminal control unit 14 may select as the second lighting fixture 30 a lighting fixture that is located closest to first lighting fixture 20 among the multiple relevant lighting fixtures, or may select second lighting fixture 30 in the order of the MAC addresses assigned to the multiple relevant lighting fixtures.

[0064] When setting a lighting fixture with a lower priority than the second lighting fixture 30, the lighting fixture is set in a manner similar to that for setting the second lighting fixture 30.

[0065] Next, terminal communication unit 13 of operation terminal 10 transmits the sensor-linked setting value to first lighting fixture 20 and second lighting fixture 30 (step S24). Here, the sensor-linked setting value is information including the priority of each of the multiple lighting fixtures included in lighting control system 1 and the individual addresses of lighting fixtures with higher priority than each of the multiple lighting fixtures.

[0066] For example, the terminal communication unit 13 of the operating terminal 10 transmits to the first lighting fixture 20 information indicating that it has the first priority, and transmits to the second lighting fixture 30 information indicating that it has the second priority and the individual address of the first lighting fixture 20, which has the first priority.

[0067] Next, terminal control unit 14 of operation terminal 10 displays a setting completion screen (step S25). Operation terminal 10 displays, for example, a setting completion screen as shown in FIG. 4(b). For example, on the setting completion screen, first lighting fixture 20 and second lighting fixture 30 are displayed in a manner that allows them to be distinguished from each other on a map showing the relative positions of the multiple lighting fixtures included in lighting control system 1. Specifically, on the setting completion screen, first lighting fixture 20 and second lighting fixture 30 may be displayed in a color different from that of the other lighting fixtures. Alternatively, on the setting completion screen, only first lighting fixture 20 may be displayed.

[0068] [Selection of second lighting fixture by area] Next, a description will be given of selection of second lighting fixtures 30 by area in lighting control system 1. Fig. 5 is a sequence diagram of processing including selection of second lighting fixtures by area in the lighting control system according to the embodiment.

[0069] First, terminal control unit 14 of operation terminal 10 displays a setting screen on display unit 12 (step S30). Fig. 6 shows an example of a display during processing including selection of second lighting fixture 30 by area of ​​operation terminal 10 of lighting control system 1 in an embodiment. Operation terminal 10 displays a setting screen as shown in Fig. 6(a) on display unit 12. For example, display unit 12 of operation terminal 10 may display a map showing an outline of the relative positions of the lighting fixtures, a cursor, and an area obtained by dividing an area in which a plurality of lighting fixtures are arranged into several regions.

[0070] Next, the terminal control unit 14 of the operation terminal 10 accepts a selection operation of the sensor installation area by the user (step S31). The user manually selects the sensor installation area where the sensor 40 is installed from among multiple areas displayed on a setting screen such as that shown in (a) of FIG. 6. The multiple areas are areas obtained by dividing an area where multiple lighting fixtures included in the lighting control system 1 are installed into areas each including some lighting fixtures. For example, an area may be set for each power supply system to which a lighting fixture belongs.

[0071] Next, terminal control unit 14 of operation terminal 10 sets first lighting fixture 20 (step S32). Terminal control unit 14 of operation terminal 10 sets the first lighting fixture based on the user's selection operation accepted in step S21. For example, operation terminal 10 stores the individual address of the first lighting fixture in a predetermined area of ​​terminal storage unit 15.

[0072] Next, terminal control unit 14 of operation terminal 10 searches for and sets the second lighting fixture (step S33).

[0073] For example, terminal control unit 14 of operation terminal 10 may accept a manual selection of second lighting device 30 by the user and set second lighting device 30. At this time, the user selects second lighting device 30 on a setting screen such as that shown in (a) of FIG.

[0074] Furthermore, for example, terminal control unit 14 of operation terminal 10 may automatically search for and set second lighting fixture 30 without accepting a selection operation from the user. Specifically, terminal control unit 14 of operation terminal 10 may select a lighting fixture adjacent to first lighting fixture 20 in the sensor installation area selected in step S31 as second lighting fixture 30. If there are multiple lighting fixtures adjacent to first lighting fixture 20, second lighting fixture 30 may be selected in the order of MAC addresses assigned to the corresponding multiple lighting fixtures.

[0075] Alternatively, terminal control unit 14 of operation terminal 10 may search for second lighting fixture 30 based on predetermined conditions from among the multiple lighting fixtures in the sensor installation area selected in step S31. For example, terminal control unit 14 of operation terminal 10 may select as second lighting fixture 30 the leftmost lighting fixture from among the multiple lighting fixtures in the sensor installation area selected in step S31, excluding first lighting fixture 20.

[0076] When setting a lighting fixture with a lower priority than the second lighting fixture 30, the lighting fixture is set in a manner similar to that for setting the second lighting fixture 30.

[0077] Next, terminal communication unit 13 of operation terminal 10 transmits the sensor-linked setting value to first lighting fixture 20 and second lighting fixture 30 (step S34). Here, the sensor-linked setting value is information including the priority order of each of the multiple lighting fixtures included in lighting control system 1 and the individual addresses of lighting fixtures with higher priority than each of the multiple lighting fixtures.

[0078] For example, the terminal communication unit 13 of the operating terminal 10 transmits to the first lighting fixture 20 information indicating that it has the first priority, and transmits to the second lighting fixture 30 information indicating that it has the second priority and the individual address of the first lighting fixture 20, which has the first priority.

[0079] Next, the terminal control unit 14 of the operation terminal 10 displays a setting completion screen (step S35). The operation terminal 10 displays, for example, a setting completion screen as shown in FIG. 6B. For example, the setting completion screen displays a map showing the relative positions of a plurality of lighting fixtures included in the lighting control system 1 in such a manner that a plurality of areas, a sensor installation area, and the first lighting fixture 20 and the second lighting fixture 30 are distinguished from one another. Specifically, the setting completion screen may display the first lighting fixture 20 and the second lighting fixture 30 in a color different from that of the other lighting fixtures. Also, the setting completion screen may display the sensor installation area and a plurality of areas other than the sensor installation area in a color different from one another. Alternatively, the setting completion screen may display only the first lighting fixture 20.

[0080] [Selection of second lighting fixture via communication] Next, the selection of second lighting fixture 30 through communication in lighting control system 1 will be described. Fig. 7 is a sequence diagram of a process including the selection of second lighting fixture 30 by area of ​​lighting control system 1 in an embodiment. Operation terminal 10 causes first lighting fixture 20 to search for second lighting fixture 30 based on the reception strength of signals transmitted from multiple lighting fixtures to identify each lighting fixture.

[0081] First, terminal control unit 14 of operation terminal 10 displays a setting screen on display unit 12 (step S40). Fig. 8 shows an example of a display during processing including selection of second lighting fixture 30 through communication with operation terminal 10 of lighting control system 1 in an embodiment. Operation terminal 10 displays a setting screen such as that shown in Fig. 8(a) on display unit 12. For example, display unit 12 of operation terminal 10 may display a map showing an outline of the relative positions of the lighting fixtures and a cursor.

[0082] Next, terminal control unit 14 of operation terminal 10 accepts a user's operation to select first lighting fixture 20 (step S41). The user manually selects first lighting fixture 20 from among the multiple lighting fixtures displayed on the setting screen as shown in (a) of FIG.

[0083] For example, the user may select a lighting fixture close to the installation location of sensor 40 as first lighting fixture 20. Note that, although the lighting fixtures are displayed as a map in the example shown in Fig. 8(a), the display of the lighting fixtures on the setting screen is not limited to this. The display on the setting screen may be a list displaying the installation locations and the lighting fixture IDs, etc.

[0084] Next, terminal control unit 14 of operation terminal 10 sets first lighting fixture 20 (step S42). Terminal control unit 14 of operation terminal 10 sets the first lighting fixture based on the user's selection operation accepted in step S41. For example, operation terminal 10 stores the individual address of the first lighting fixture in a predetermined area of ​​terminal storage unit 15.

[0085] Next, terminal communication unit 13 of operation terminal 10 transmits a second lighting fixture scan start signal to first lighting fixture 20 (step S43). The second lighting fixture scan start signal is a signal that operation terminal 10 uses to cause the first lighting fixture to simultaneously transmit (broadcast) a signal to a plurality of lighting fixtures.

[0086] Next, first communication unit 21 of first lighting fixture 20 transmits a signal to second communication unit 31 of second lighting fixture 30 (step S44). That is, first communication unit 21 of first lighting fixture 20 transmits (broadcasts) a signal to a plurality of lighting fixtures that can serve as second lighting fixtures 30.

[0087] Then, first control unit 23 of first lighting device 20 starts scanning for second lighting device 30 (step S45). First communication unit 21 of first lighting device 20 goes into a standby state for receiving beacons from a plurality of lighting devices. During the scan, first communication unit 21 of first lighting device 20 receives the beacons transmitted from each lighting device. First control unit 23 of first lighting device 20 measures the reception strength of the beacons transmitted from each lighting device, and first storage unit 24 of first lighting device 20 stores each reception strength.

[0088] Next, the second communication unit 31 of the second lighting fixture 30 transmits a beacon to the first lighting fixture 20 (step S46). That is, the second communication unit 31 of the second lighting fixture 30 starts broadcasting a beacon. The second communication unit 31 of the second lighting fixture 30 may transmit a beacon only to the first lighting fixture 20, or may transmit a beacon to all lighting fixtures included in the lighting control system 1. The beacon includes an individual address of the second lighting fixture 30. Here, the second lighting fixture 30 may correspond to all of the multiple lighting fixtures included in the lighting control system 1.

[0089] Next, first control unit 23 of first lighting fixture 20 stops scanning for second lighting fixture 30 (step S47). First control unit 23 of first lighting fixture 20 may stop scanning for second lighting fixture 30 after confirming that it has received beacons from all lighting fixtures included in lighting control system 1. Alternatively, first control unit 23 of first lighting fixture 20 may stop scanning for second lighting fixture 30 after scanning the second lighting fixture 30 for a certain period of time.

[0090] Next, second communication unit 31 of second lighting device 30 stops transmitting the beacon to first lighting device 20 (step S48). That is, second communication unit 31 of second lighting device 30 stops broadcasting the beacon.

[0091] Next, first communication unit 21 of first lighting fixture 20 transmits the reception intensity of the beacon to operation terminal 10 (step S49). First communication unit 21 of first lighting fixture 20 transmits to operation terminal 10 a lighting control signal related to the reception intensity of the beacon from each of the multiple lighting fixtures included in lighting control system 1, which have been stored in first storage unit 24 by the scan of the second lighting fixture.

[0092] Then, terminal control unit 14 of operation terminal 10 searches for and sets second lighting fixture 30 (step S50). For example, terminal control unit 14 of operation terminal 10 searches for a lighting fixture having the highest beacon reception strength among the multiple lighting fixtures included in lighting control system 1, and sets the searched lighting fixture as second lighting fixture 30.

[0093] When there are multiple lighting fixtures with the same beacon reception strength, terminal control unit 14 of operation terminal 10 may search for the lighting fixture with the highest individual address among the multiple lighting fixtures with the same beacon reception strength, and set the searched lighting fixture as second lighting fixture 30. Note that terminal control unit 14 of operation terminal 10 may search for the lighting fixture with the smallest individual address instead of the lighting fixture with the largest individual address.

[0094] When setting a lighting fixture with a lower priority than the second lighting fixture 30, the lighting fixture is set in a manner similar to that for setting the second lighting fixture 30.

[0095] Next, terminal communication unit 13 of operation terminal 10 transmits the sensor-linked setting value to first lighting fixture 20 and second lighting fixture 30 (step S51). Here, the sensor-linked setting value is information including the priority of each of the multiple lighting fixtures included in lighting control system 1 and the individual addresses of lighting fixtures with higher priority than each of the multiple lighting fixtures.

[0096] For example, the terminal communication unit 13 of the operating terminal 10 transmits to the first lighting fixture 20 information indicating that it has the first priority, and transmits to the second lighting fixture 30 information indicating that it has the second priority and the individual address of the first lighting fixture 20, which has the first priority.

[0097] Next, terminal control unit 14 of operation terminal 10 displays a setting completion screen (step S52). Operation terminal 10 displays a setting completion screen as shown in FIG. 8(b), for example. For example, the setting completion screen displays first lighting fixture 20 and second lighting fixture 30 in a manner that allows them to be distinguished from each other on a map representing the relative positions of multiple lighting fixtures included in lighting control system 1. Specifically, first lighting fixture 20 and second lighting fixture 30 may be displayed in a color different from that of other lighting fixtures on the setting completion screen. Alternatively, only first lighting fixture 20 may be displayed on the setting completion screen.

[0098] [Selection of second lighting fixture based on sensor information] Next, the selection of the second lighting fixture 30 based on sensor information in the lighting control system 1 will be described. Fig. 9 is a sequence diagram of a process including the selection of the second lighting fixture 30 based on sensor information of the lighting fixtures in the lighting control system 1 according to an embodiment. The operation terminal 10 causes the multiple lighting fixtures included in the lighting control system 1 to receive sensor information, which is a signal from the sensor 40, and searches for and sets the first lighting fixture 20 and the second lighting fixture 30 based on the reception strength of the sensor information of each of the multiple lighting fixtures.

[0099] First, terminal control unit 14 of operation terminal 10 displays a setting screen on display unit 12 (step S60). Fig. 10 is a display example during processing including selection of second lighting fixture 30 based on sensor information of operation terminal 10 of lighting control system 1 in an embodiment. Terminal control unit 14 of operation terminal 10 displays a setting screen as shown in Fig. 10(a) on display unit 12. For example, display unit 12 of operation terminal 10 may display a map showing an outline of the relative positions of the lighting fixtures, a cursor, and a sensor linkage setting start button that is a start button for transmitting sensor information to sensor 40.

[0100] Next, terminal control unit 14 of operation terminal 10 accepts pressing of a sensor linkage setting start button by the user (step S61). Upon accepting pressing of the sensor linkage setting start button, terminal control unit 14 of operation terminal 10 transmits a sensor information scan start signal to each of the lighting fixtures included in lighting control system 1. That is, terminal control unit 14 of operation terminal 10 transmits a sensor information scan start signal to first lighting fixture 20 and second lighting fixture 30 included in lighting control system 1.

[0101] The sensor information scan start signal is a signal that causes the lighting fixture to start entering a standby state for receiving sensor information, which is a signal from the sensor 40.

[0102] Next, the sensor communication unit 41 of the sensor 40 simultaneously transmits (broadcasts) the sensor information (step S62).

[0103] Next, first control unit 23 of first lighting device 20 starts scanning for sensor information (step S63). First control unit 23 of first lighting device 20 goes into a standby state for receiving sensor information from sensor 40. During the scan, first communication unit 21 of first lighting device 20 receives the sensor information, which is a signal transmitted from sensor 40. First control unit 23 of first lighting device 20 measures the reception strength of the sensor information transmitted from sensor 40, and first storage unit 24 of first lighting device 20 stores it.

[0104] Next, the second control unit 33 of the second lighting device 30 starts scanning for sensor information (step S64). The second communication unit 31 of the second lighting device 30 goes into a standby state to receive sensor information from the sensor 40. During the scan, the second communication unit 31 of the second lighting device 30 receives the sensor information, which is a signal transmitted from the sensor 40. The second control unit 33 of the second lighting device 30 measures the reception strength of the sensor information transmitted from the sensor 40, and the second memory unit 34 of the second lighting device 30 stores it.

[0105] Next, first control unit 23 of first lighting device 20 stops scanning the sensor information (step S65). After first control unit 23 of first lighting device 20 determines that it has received the sensor information transmitted from sensor 40, it may stop scanning the sensor information. Then, first lighting device 20 transmits information related to the reception intensity of the sensor information to operation terminal 10.

[0106] Next, the second control unit 33 of the second lighting device 30 stops scanning the sensor information (step S66). After determining that the sensor information transmitted from the sensor 40 has been received, the second control unit 33 of the second lighting device 30 may stop scanning the sensor information. Then, the second communication unit 31 of the second lighting device 30 transmits information regarding the reception intensity of the sensor information to the operation terminal 10.

[0107] That is, in steps S65 and S66, the multiple lighting fixtures included in the lighting control system 1 stop scanning the sensor information and transmit to the operation terminal 10 information related to the reception intensity of the sensor information received by each lighting fixture.

[0108] Then, terminal control unit 14 of operation terminal 10 searches for the first lighting fixture 20 and the second lighting fixture 30 and sets them (step S67). Terminal control unit 14 of operation terminal 10 searches for the lighting fixture with the highest reception strength of the sensor information as the first lighting fixture 20 and the lighting fixture with the second highest reception strength of the sensor information as the second lighting fixture 30, and sets the searched lighting fixtures as the first lighting fixture 20 and the second lighting fixture 30, respectively. Note that the sensor reception strengths of the lighting fixtures searched for as the first lighting fixture 20 and the second lighting fixture 30 are not limited to those described above.

[0109] Furthermore, when there are multiple lighting fixtures with the same sensor reception strength, terminal control unit 14 of operation terminal 10 may search for the lighting fixture with the largest individual address and set the searched lighting fixture as second lighting fixture 30. Note that terminal control unit 14 of operation terminal 10 may search for the lighting fixture with the smallest individual address instead of the lighting fixture with the largest individual address.

[0110] When setting a lighting fixture with a lower priority than the second lighting fixture 30, the lighting fixture is set in a manner similar to that for setting the second lighting fixture 30.

[0111] Next, terminal communication unit 13 of operation terminal 10 transmits the sensor-linked setting value to first lighting fixture 20 and second lighting fixture 30 (step S68). Here, the sensor-linked setting value is information including the priority of each of the multiple lighting fixtures included in lighting control system 1 and the individual addresses of lighting fixtures with higher priority than each of the multiple lighting fixtures.

[0112] For example, the terminal communication unit 13 of the operating terminal 10 transmits to the first lighting fixture 20 information indicating that it has the first priority, and transmits to the second lighting fixture 30 information indicating that it has the second priority and the individual address of the first lighting fixture 20, which has the first priority.

[0113] Next, terminal control unit 14 of operation terminal 10 displays a setting completion screen (step S69). Operation terminal 10 displays a setting completion screen as shown in FIG. 10(b), for example. For example, the setting completion screen displays first lighting fixture 20 and second lighting fixture 30 in a manner that allows them to be distinguished from each other on a map showing the relative positions of the multiple lighting fixtures included in lighting control system 1. Specifically, first lighting fixture 20 and second lighting fixture 30 may be displayed in a color different from that of the other lighting fixtures on the setting completion screen. Alternatively, only first lighting fixture 20 may be displayed on the setting completion screen.

[0114] [Operation of the first and second lighting fixtures] Next, it will be described how first lighting fixture 20 and second lighting fixture 30 operate individually. Fig. 11 is a flowchart showing the operation of first lighting fixture 20 in lighting control system 1 according to the embodiment.

[0115] The first lighting fixture 20 operates as follows.

[0116] First, first lighting device 20 determines whether or not it has received sensor information transmitted from sensor 40 (step S70). First control unit 23 of first lighting device 20 determines whether or not first communication unit 21 of first lighting device 20 has received the sensor information transmitted from sensor communication unit 41 of sensor 40.

[0117] If the first lighting fixture 20 determines that it has received the sensor information (Yes in step S70), the first lighting fixture 20 generates a lighting control signal (step S71). If the first control unit 23 of the first lighting fixture 20 determines that the first communication unit 21 of the first lighting fixture 20 has received the sensor information transmitted from the sensor communication unit 41 of the sensor 40, the first control unit 23 generates a lighting control signal.

[0118] Next, first lighting fixture 20 determines whether the generated lighting control signal is addressed to its own address (step S72). First controller 23 of first lighting fixture 20 determines whether the lighting control signal generated in step S61 is a signal addressed to first lighting fixture 20.

[0119] If first lighting fixture 20 determines that the generated lighting control signal is addressed to its own address (Yes in step S72), first lighting fixture 20 controls its own lighting based on the generated lighting control signal (step S73). Here, first controller 23 of first lighting fixture 20 may control its own lighting based on the generated lighting control signal. Then, first lighting fixture 20 returns to step S60.

[0120] If first lighting fixture 20 determines that the generated lighting control signal is not addressed to its own address (No in step S72), first lighting fixture 20 transmits the generated lighting control signal (step S74). First communication unit 21 of first lighting fixture 20 may transmit the lighting control signal generated by first control unit 23 to a lighting fixture whose address is included in the lighting control signal, or may transmit the lighting control signal simultaneously to all lighting fixtures other than first lighting fixture 20. First lighting fixture 20 then returns to step S60.

[0121] If first lighting fixture 20 determines that it has not received the sensor information (No in step S70), first lighting fixture 20 performs step S73. If first control unit 23 of first lighting fixture 20 determines that first communication unit 21 of first lighting fixture 20 has not received the sensor information transmitted from sensor communication unit 41 of sensor 40, first lighting fixture 20 controls its own lighting based on the generated lighting control signal. Here, first control unit 23 of first lighting fixture 20 may control its own lighting based on the generated lighting control signal.

[0122] 12 is a flowchart illustrating the operation of second lighting fixture 30 of lighting control system 1 according to the embodiment. Second lighting fixture 30 performs the following operations.

[0123] The second lighting device 30 determines whether or not it has received the sensor information from the sensor 40 (step S80). The second control unit 33 of the second lighting device 30 determines whether or not the second communication unit 31 of the second lighting device 30 has received the sensor information transmitted from the sensor communication unit 41 of the sensor 40.

[0124] If the second lighting device 30 determines that it has received the sensor information from the sensor 40 (Yes in step S80), the second lighting device 30 generates a lighting control signal (step S81). If the second control unit 33 of the second lighting device 30 determines that the second communication unit 31 of the second lighting device 30 has received the sensor information transmitted from the sensor communication unit 41 of the sensor 40, the second control unit 33 generates a lighting control signal.

[0125] Next, the second lighting fixture 30 determines whether the generated lighting control signal is addressed to its own address (step S82). The second controller 33 of the second lighting fixture 30 determines whether the lighting control signal generated in step S71 is addressed to the second lighting fixture 30.

[0126] If the second lighting fixture 30 determines that the generated lighting control signal is addressed to its own address (Yes in step S82), the second lighting fixture 30 controls its own lighting based on the generated lighting control signal (step S83). Here, the second controller 33 of the second lighting fixture 30 may control its own lighting based on the generated lighting control signal. The second lighting fixture 30 then returns to step S70.

[0127] If the second lighting fixture 30 determines that the generated lighting control signal is not addressed to its own address (No in step S82), the second lighting fixture 30 determines whether a lighting control signal has been sent from the first lighting fixture 20 within a certain period of time (step S84).

[0128] If the second lighting fixture 30 determines that a lighting control signal has been transmitted from the first lighting fixture 20 within the fixed time period (Yes in step S84), the process returns to step S70.

[0129] If the second lighting fixture 30 determines that a lighting control signal has not been transmitted from the first lighting fixture 20 within the specified time period (No in step S84), the second lighting fixture 30 transmits a lighting control signal (step S85). The second communication unit 31 of the second lighting fixture 30 may transmit the lighting control signal generated by the second control unit 33 to a lighting fixture whose address is included in the lighting control signal, or may transmit the lighting control signal simultaneously to all lighting fixtures other than the second lighting fixture 30. The second lighting fixture 30 then returns to step S80.

[0130] [Effects, etc.] The lighting control system 1 of the present disclosure comprises a plurality of lighting fixtures including a first lighting fixture 20 and a second lighting fixture 30, and a sensor 40 that transmits sensor information to the plurality of lighting fixtures when it detects an object. After receiving the sensor information, the second lighting fixture 30 transmits a lighting control signal to the plurality of lighting fixtures if it does not receive a lighting control signal for controlling the plurality of lighting fixtures, which is transmitted by the first lighting fixture 20 when it receives sensor information.

[0131] As a result, the lighting control system 1 of the present disclosure can ensure communication between the sensor 40 and the lighting fixtures even when the lighting fixtures are unable to communicate, thereby alleviating communication congestion and enabling more accurate control of the lighting fixtures than conventional methods.

[0132] Also, for example, lighting control system 1 of the present disclosure further includes operation terminal 10, which selects first lighting fixture 20 and second lighting fixture 30 from among the plurality of lighting fixtures.

[0133] This allows the lighting control system 1 of the present disclosure to select appropriate lighting fixtures for performing lighting control using the signal from the sensor 40 as a trigger.

[0134] Furthermore, for example, in lighting control system 1 of the present disclosure, second lighting fixture 30 stores an identification ID that is an identifier for identifying first lighting fixture 20 selected by operation terminal 10.

[0135] This allows the lighting control system 1 of the present disclosure to control the lighting of the second lighting fixture 30 in response to the operation of the first lighting fixture 20.

[0136] Also, for example, in the lighting control system 1 of the present disclosure, when a first lighting fixture 20 is selected by a user's input to the operation terminal 10, the operation terminal 10 selects a lighting fixture adjacent to the first lighting fixture 20 from among the multiple lighting fixtures as the second lighting fixture 30.

[0137] As a result, the lighting control system 1 of the present disclosure can ensure communication quality between the first lighting fixture 20 and the second lighting fixture 30 by designating the first lighting fixture 20 and the second lighting fixture 30 as lighting fixtures that are close to each other.

[0138] Also, for example, in the lighting control system 1 of the present disclosure, when a first lighting fixture 20 is selected by a user's input to the operation terminal 10, the operation terminal 10 selects, from among the multiple lighting fixtures, a lighting fixture that belongs to a power supply system different from the power supply system to which the first lighting fixture 20 belongs as the second lighting fixture 30.

[0139] This increases the likelihood that the lighting control system 1 of the present disclosure will be able to operate the second lighting fixture 30 even when the first lighting fixture 20 is turned off.

[0140] Furthermore, for example, when the first lighting fixture 20 is selected by a user's input to the operation terminal 10, the lighting control system 1 of the present disclosure selects the second lighting fixture 30 from among the one or more lighting fixtures based on the reception strength of a signal from the first lighting fixture 20 received by one or more lighting fixtures other than the first lighting fixture 20 among the multiple lighting fixtures.

[0141] This allows lighting control system 1 of the present disclosure to select a lighting fixture that is a desired distance away from first lighting fixture 20 as second lighting fixture 30.

[0142] Also, for example, in the lighting control system 1 of the present disclosure, the operation terminal 10, in response to a user's input to the operation terminal 10, puts the multiple lighting fixtures into a sensor signal reception standby state in which they are able to receive a signal from the sensor 40, and selects a first lighting fixture 20 and a second lighting fixture 30 from among the multiple lighting fixtures based on the reception strength of the signal from the sensor 40 when the multiple lighting fixtures receive it.

[0143] This allows the lighting control system 1 of the present disclosure to select lighting fixtures that are a desired distance from the sensor 40 as the first lighting fixture 20 and the second lighting fixture 30.

[0144] Also, for example, in the lighting control system 1 of the present disclosure, a plurality of lighting fixtures stores sensor information.

[0145] This allows the lighting control system 1 of the present disclosure to utilize the sensor information transmitted from the sensor 40 to perform control.

[0146] Furthermore, for example, in the lighting control system 1 of the present disclosure, the sensor information includes a sensor value acquired by the sensor 40 detecting an object.

[0147] This allows the lighting control system 1 of the present disclosure to utilize the sensor value detected by the sensor 40 to perform control.

[0148] Also, for example, in the lighting control system 1 of the present disclosure, the sensor 40 transmits a signal including a lighting control command to a plurality of lighting fixtures to control the plurality of lighting fixtures.

[0149] This allows the lighting control system 1 of the present disclosure to cause the sensor 40 to perform lighting control.

[0150] [others] Although the embodiment has been described above, the present invention is not limited to the above embodiment.

[0151] For example, the lighting control system according to the above-described embodiment may be realized by a plurality of devices, or may be realized as a single device. For example, the lighting control system may be realized using a client-server system. Furthermore, the lighting control system may be realized using a mobile terminal such as a smartphone or a tablet terminal. When the lighting control system is realized by a plurality of devices, the components of the lighting control system may be distributed among the plurality of devices in any manner.

[0152] In the above embodiment, the process executed by a specific processing unit may be executed by another processing unit. The order of multiple processes may be changed, or multiple processes may be executed in parallel.

[0153] In the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

[0154] Furthermore, each component may be realized by hardware. For example, each component may be a circuit (or an integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit, or a dedicated circuit.

[0155] Furthermore, the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM, etc. Furthermore, the general or specific aspects of the present invention may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0156] For example, the present invention may be realized as a program for causing a computer to execute the lighting control method of the above-described embodiment. The present invention may be realized as a computer-readable non-transitory recording medium having such a program recorded thereon. Note that such a program includes an application program for causing a general-purpose mobile terminal to operate as the lighting control system according to the above-described embodiment.

[0157] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0158] 1. Lighting control system 10 Operation terminal 11 Acquisition Department 12 Display section 13 Terminal communication unit 14 Terminal control unit 15 Terminal memory section 20 First Lighting Fixture 21 First Communications Department 22 1st light source section 23 First Control Section 24 1st memory section 30 Second Lighting Fixture 31 2nd Communications Department 32 Second light source section 33 Second Control Section 34 2nd memory section 40 Sensors 41 Sensor communication unit 42 Detection unit 43 Sensor control unit 44 Sensor memory unit 100 Lighting Control Network

Claims

1. A plurality of lighting fixtures including a first lighting fixture and a second lighting fixture; a sensor that transmits sensor information to the plurality of lighting devices when the sensor detects an object; the second lighting device, after receiving the sensor information, transmits the lighting control signal when the first lighting device has received the sensor information, and, if the first lighting device has not received the lighting control signal for controlling the plurality of lighting devices, wirelessly transmits the lighting control signal to the plurality of lighting devices; Lighting control system.

2. Further, an operation terminal is provided, The operation terminal selects the first lighting device and the second lighting device from among the plurality of lighting devices.

2. A lighting control system as claimed in claim 1.

3. The second lighting device stores an identification ID that is an identifier for identifying the first lighting device selected by the operation terminal.

3. A lighting control system as claimed in claim 2.

4. When the first lighting device is selected by a user's input to the operation terminal, the operation terminal selects, as the second lighting device, a lighting device adjacent to the first lighting device from among the plurality of lighting devices. A lighting control system according to claim 2 or 3.

5. When the first lighting device is selected by a user's input to the operation terminal, the operation terminal selects, as the second lighting device, a lighting device belonging to a power supply system different from a power supply system to which the first lighting device belongs, from among the plurality of lighting devices. A lighting control system according to any one of claims 2 to 4.

6. The operation terminal includes: when the first lighting device is selected by a user's input to the operation terminal, the second lighting device is selected from among the one or more lighting devices based on a reception strength of a signal received by one or more lighting devices other than the first lighting device among the plurality of lighting devices when the one or more lighting devices receive a signal from the first lighting device. A lighting control system according to any one of claims 2 to 5.

7. The operation terminal includes: by a user's input to the operation terminal, causing the plurality of lighting devices to enter a sensor signal waiting state in which the lighting devices are capable of receiving a signal from the sensor; selecting the first lighting device and the second lighting device from among the plurality of lighting devices based on reception strengths of signals received from the sensor by the plurality of lighting devices; A lighting control system according to any one of claims 2 to 6.

8. The plurality of lighting devices store the sensor information. A lighting control system according to any one of claims 1 to 7.

9. The sensor information includes a sensor value acquired by the sensor detecting an object. A lighting control system according to any one of claims 1 to 8.

10. the sensor transmits a signal to the plurality of lighting fixtures, the signal including a lighting control command for controlling the plurality of lighting fixtures. A lighting control system according to any one of claims 1 to 9.

11. A plurality of lighting fixtures including a first lighting fixture and a second lighting fixture; A control method for a lighting control system including a sensor that transmits sensor information to the plurality of lighting devices when an object is detected, the second lighting device, after receiving the sensor information, transmits the lighting control signal when the first lighting device has received the sensor information, and, if the first lighting device has not received the lighting control signal for controlling the plurality of lighting devices, wirelessly transmits the lighting control signal to the plurality of lighting devices; Lighting control methods.

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