Illumination system, illumination control device, control method, and program

Abstract

To provide an illumination system capable of allowing an illumination control device to cause another illumination control device to recognize that the illumination control device has detected a person.SOLUTION: An illumination system 10 includes lighting apparatuses 20 and multiple illumination control devices 30. Each of the multiple illumination control devices 30 is configured so as to, upon detecting a person; transmit via radio a first control signal to cause a lighting apparatus 20 to transit to the first dimming state to the lighting apparatus 20 and the other illumination control devices 30, to start to count the control retention time; and, at the end timing ending the control retention time count; and transmit via radio to the lighting apparatus 20 a second control signal to cause the lighting apparatus 20 to shift from a first dimming status to a second dimming status darker than the first dimming status.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] There is a known technology for controlling lighting fixtures using a human presence sensor. Patent Document 1 discloses a lighting device that sufficiently detects human bodies in an illuminated space, has an energy-saving effect, and does not cause discomfort or discomfort to people in a certain illuminated space. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-129377 Summary of the Invention [Problem to be solved by the invention]

[0004] In a lighting system using a motion sensor, when the motion sensor detects a person, the lighting fixture typically switches to a bright dimmed state and then returns to a dimmed state after a predetermined time has elapsed.

[0005] In this case, if a lighting control device equipped with a human presence sensor counts the predetermined time, even if another lighting control device detects a person before the count of the predetermined time ends, the lighting control device cannot recognize that the other lighting control device has detected a person. Therefore, the lighting control device returns the lighting device to a dim dimming state when the count of the predetermined time ends. In other words, there is a problem that the predetermined time cannot be extended in response to the detection of a person by another lighting control device.

[0006] The present invention provides a lighting system etc. in which a lighting control device can cause another lighting control device to recognize that the lighting control device has detected a person. [Means for solving the problem]

[0007] A lighting system according to one embodiment of the present invention includes a lighting fixture and a plurality of lighting control devices, each of which, upon detecting a person, wirelessly transmits a first control signal to the lighting fixture and other lighting control devices for transitioning the lighting fixture to a first dimming state, and starts counting a control retention time, and at an end timing when the counting of the control retention time ends, wirelessly transmits a second control signal to the lighting fixture for transitioning the lighting fixture from the first dimming state to a second dimming state that is darker than the first dimming state.

[0008] A lighting control device according to one embodiment of the present invention includes a human presence sensor, a wireless communication unit, and an information processing unit that, when the human presence sensor detects a person, wirelessly transmits a first control signal for transitioning the lighting device to a first dimming state to the lighting device and other lighting control devices using the wireless communication unit, and starts counting a control hold time, wherein, at an end timing when the counting of the control hold time ends, the information processing unit wirelessly transmits a second control signal to the lighting device using the wireless communication unit, for transitioning the lighting device from the first dimming state to a second dimming state that is darker than the first dimming state.

[0009] A control method according to one aspect of the present invention is a control method executed by a lighting control device equipped with a human presence sensor, and includes the steps of: when the human presence sensor detects a person, wirelessly transmitting a first control signal to the lighting device and another lighting control device for transitioning the lighting device to a first dimming state and starting counting a control retention time; and, at an end timing when the counting of the control retention time ends, wirelessly transmitting a second control signal to the lighting device for transitioning the lighting device from the first dimming state to a second dimming state that is darker than the first dimming state.

[0010] A program according to one aspect of the present invention is a program for causing the lighting control device to execute the control method. Effect of the Invention

[0011] According to the lighting system etc. of the present invention, a lighting control device can make other lighting control devices recognize that the lighting control device has detected a person. [Brief description of the drawings]

[0012] [Figure 1] FIG. 1 is a block diagram showing a functional configuration of a lighting system according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing an indoor space to which the lighting system according to the embodiment is applied. [Diagram 3] FIG. 3 is a sequence diagram of a first operation example of the lighting system according to the embodiment. [Figure 4] FIG. 4 is a sequence diagram of a second operation example of the lighting system according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the embodiments will be described in detail with reference to the drawings. Note that the embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, component arrangement and connection forms, steps, and order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. In addition, among the components in the following embodiments, components that are not described in the independent claims will be described as optional components.

[0014] In addition, each drawing is a schematic diagram and is not necessarily a precise illustration. In addition, in each drawing, the same reference numerals are used for substantially the same configuration, and duplicated explanations may be omitted or simplified.

[0015] (Embodiment) [composition] First, the configuration of a lighting system according to an embodiment will be described. FIG. 1 is a block diagram showing a functional configuration of a lighting system according to an embodiment. FIG. 2 is a diagram showing an indoor space to which a lighting system according to an embodiment is applied. As shown in FIGS. 1 and 2, a lighting system 10 includes a plurality of lighting fixtures 20 and a plurality of lighting control devices 30. Note that it is sufficient for the lighting system 10 to include at least one lighting fixture 20. There is no particular limitation on the number of the plurality of lighting fixtures 20 and the number of the plurality of lighting control devices 30 included in the lighting system 10.

[0016] Illumination device 20 is a base light or the like that is installed on the ceiling of indoor space 50 and illuminates indoor space 50. The form of illumination device 20 is not particularly limited, and may be a ceiling light, a downlight, a spotlight, or the like. Illumination device 20 specifically includes wireless communication unit 21, light source 22, information processing unit 23, and storage unit 24.

[0017] Wireless communication unit 21 is a wireless communication circuit that enables lighting fixture 20 to perform wireless communication (more specifically, radio wave communication) with lighting control device 30. Specifically, wireless communication unit 21 performs wireless communication in accordance with a communication standard such as BLE (Bluetooth (registered trademark) Low Energy), Wi-Fi (registered trademark), or Zigbee (registered trademark), but the communication standard is not particularly limited.

[0018] The light source 22 irradiates white light into the indoor space 50 so that the lighting device 20 illuminates the indoor space 50. The light source 22 is realized by, for example, an LED (Light Emitting Diode) element, but may be realized by other light emitting elements such as a semiconductor laser, an organic EL (Electro-Luminescence), or an inorganic EL.

[0019] Information processing unit 23 performs light emission control of lighting device 20 (light source 22). Light emission control includes on / off control, dimming control, color adjustment control, and light distribution control. Information processing unit 23 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit. The functions of information processing unit 23 are realized by hardware such as a microcomputer or processor constituting information processing unit 23 executing a computer program (software) stored in storage unit 24.

[0020] The storage unit 24 is a storage device that stores various information necessary for the information processing unit 23 to execute light emission control, such as a computer program executed by the information processing unit 23. The storage unit 24 is realized by, for example, a semiconductor memory.

[0021] The lighting control device 30 is a lighting control device integrated with a human presence sensor 31. The lighting control device 30 is installed on a ceiling or a wall of an indoor space 50, and controls lighting fixtures 20 when it detects a person. The lighting control device 30 includes the human presence sensor 31, a wireless communication unit 32, an information processing unit 33, and a memory unit 34.

[0022] The human presence sensor 31 detects a person located in the indoor space 50. The human presence sensor 31 is realized by, for example, a pyroelectric sensor (infrared sensor) that detects infrared rays emitted from a human body. The human presence sensor 31 may also be realized by an image sensor (camera) that captures an image of the indoor space 50.

[0023] The wireless communication unit 32 is a wireless communication circuit that enables the lighting control device 30 to perform wireless communication (more specifically, radio wave communication) with multiple lighting fixtures 20 and other lighting control devices 30. Specifically, the wireless communication unit 32 performs wireless communication in accordance with a communication standard such as BLE, Wi-Fi (registered trademark), or Zigbee (registered trademark), but the communication standard is not particularly limited.

[0024] The information processing unit 33 performs information processing for controlling the lighting device 20 when a person is detected by the motion sensor 31. The information processing unit 33 is realized by, for example, a microcomputer, but may also be realized by a processor or a dedicated circuit. The functions of the information processing unit 33 are realized by hardware such as a microcomputer or a processor constituting the information processing unit 33 executing a computer program (software) stored in the storage unit 34.

[0025] The storage unit 34 is a storage device that stores various information used by the information processing unit 33, such as computer programs executed by the information processing unit 33. The storage unit 34 is realized by, for example, a semiconductor memory.

[0026] [Example 1] Next, a description will be given of a first operation example of the lighting system 10. Fig. 3 is a sequence diagram of the first operation example of the lighting system 10. In the following description of the first operation example, when a plurality of lighting control devices 30 need to be distinguished from one another, they will be referred to as lighting control device 30a or lighting control device 30b.

[0027] Each of the lighting devices 20 is initially in the second dimming state (S11). The second dimming state is, for example, an off state (dimming rate of 0%), but may also be a dimming rate of 20%. The second dimming state is a relatively dark dimming state.

[0028] When a person is detected by motion sensor 31 (S12), information processing unit 33 of lighting control device 30a wirelessly transmits, via wireless communication unit 32, a first control signal to multiple lighting devices 20 to transition the multiple lighting devices 20 to a first dimming state (S13). The first dimming state is a dimming state that is brighter than the second dimming state. The first dimming state is, for example, a dimming rate of 100%, but may also be a dimming rate of 80%, for example.

[0029] 3, arrows are drawn to indicate that the first control signal is transmitted from lighting control device 30a to each of the multiple lighting fixtures 20, but the first control signal may be transmitted in any manner in step S13. For example, the multiple lighting fixtures 20 and lighting control device 30a may form a wireless mesh network, and the first control signal transmitted by lighting control device 30a may be relayed to one lighting fixture 20 and received by the other lighting fixtures 20.

[0030] Each of the plurality of lighting devices 20 receives the first control signal using wireless communication unit 21. Each of the plurality of lighting devices 20 transitions from the second dimming state to the first dimming state based on the received first control signal (S14). More specifically, information processing unit 23 of each of the plurality of lighting devices 20 controls light source 22 to change from the second dimming state to the first dimming state based on the received first control signal. The transition from the second dimming state to the first dimming state is triggered by the reception of the first control signal.

[0031] Furthermore, when a person is detected by the human presence sensor 31 in step S12, the information processing unit 33 of the lighting control device 30a starts counting the control retention time (S15). The control retention time is stored (registered) in advance in the storage unit 34. The length of the control retention time is, for example, about several tens of seconds to several tens of minutes, but is not particularly limited.

[0032] When information processor 33 of lighting control device 30a finishes counting the control hold time (S16), it wirelessly transmits to multiple lighting devices 20 a second control signal for transitioning multiple lighting devices 20 from the first dimming state to the second dimming state (S17). Note that when the counting ends, the count value is reset (initialized).

[0033] 3, arrows are drawn to indicate that the second control signal is transmitted from lighting control device 30a to each of the multiple lighting fixtures 20, but the second control signal may be transmitted in any manner in step S17. For example, the multiple lighting fixtures 20 and lighting control device 30a may form a wireless mesh network, and the second control signal transmitted by lighting control device 30a may be relayed to one lighting fixture 20 and received by the other lighting fixtures 20.

[0034] Each of the plurality of lighting devices 20 receives the second control signal using wireless communication unit 21. Each of the plurality of lighting devices 20 transitions from the first dimming state to the second dimming state based on the received second control signal (S18). More specifically, information processing unit 23 of each of the plurality of lighting devices 20 controls light source 22 to change from the first dimming state to the second dimming state based on the received second control signal. The transition from the first dimming state to the second dimming state is triggered by the reception of the second control signal.

[0035] In this way, when the motion sensor 31 of the lighting control device 30a detects a human being, the lighting system 10 transitions the multiple lighting devices 20 to the first dimming state for the control retention time (predetermined period), and then controls the multiple lighting devices 20 to return to the second dimming state, which is darker than the first dimming state, after the control retention time has elapsed. In other words, when the motion sensor 31 detects a human being, the lighting system 10 can cause the multiple lighting devices 20 to emit light brightly only for the control retention time.

[0036] [Challenge for operation example 1] In operation example 1, while lighting control device 30a is counting the control retention time (from the start of counting to the end of counting), a person may be detected by motion sensor 31 of lighting control device 30b (S19). In this case, even if lighting control device 30b transmits a first control signal to each of the multiple lighting devices 20 (S20), lighting control device 30a is unable to recognize that a person has been detected by motion sensor 31 of lighting control device 30b. For this reason, even if a person has been detected by motion sensor 31 of lighting control device 30b, lighting control device 30a switches the multiple lighting devices 20 to the second dimming state after the control retention time has elapsed since the motion sensor 31 of lighting control device 30a detected the person.

[0037] If you want to switch the multiple lighting fixtures 20 to the second dimming state after the control retention time has elapsed since a person was detected by the human presence sensor 31 of the lighting control device 30b, in other words, if you want to extend the time that the multiple lighting fixtures 20 are in the first dimming state, you need to make the lighting control device 30a recognize that a person has been detected by the human presence sensor 31 of the lighting control device 30b.

[0038] [Example 2] Therefore, in operation example 2, each of the multiple lighting control devices 30 transmits a first control signal not only to the multiple lighting fixtures 20 but also to the other lighting control devices 30, causing the lighting control device 30a to recognize that a person has been detected by the motion sensor 31 in the other lighting control devices 30. Such operation example 2 will be described below. Fig. 4 is a sequence diagram of operation example 2 of the lighting system 10. In the following description of operation example 2, when distinguishing between the multiple lighting control devices 30, they will be referred to as lighting control device 30a or lighting control device 30b.

[0039] Each of the multiple lighting devices 20 is initially in the second dimming state (S21). When a person is detected by the motion sensor 31 (S22), the information processing unit 33 of the lighting control device 30a wirelessly transmits, via the wireless communication unit 32, a first control signal for transitioning the multiple lighting devices 20 to the first dimming state to the multiple lighting devices 20 and the lighting control device 30b (S23).

[0040] Wireless communication unit 32 of lighting control device 30b receives the first control signal but does not process the information in this case. Meanwhile, upon receiving the first control signal, each of the lighting devices 20 transitions from the second dimming state to the first dimming state based on the received first control signal (S24).

[0041] Furthermore, when a person is detected by the human presence sensor 31 in step S22, the information processing section 33 of the lighting control device 30a starts counting the control hold time (S25).

[0042] When a person is detected by the motion sensor 31 (S26), the information processing unit 33 of the lighting control device 30b wirelessly transmits, using the wireless communication unit 32, a first control signal for transitioning the multiple lighting devices 20 to the first dimming state to the multiple lighting devices 20 and the lighting control device 30a (S27).

[0043] Although each of the lighting devices 20 receives the first control signal, since the lighting devices 20 have already transitioned to the first dimming state, no particular information processing is performed. Meanwhile, when the notification signal is received by the wireless communication unit 32, the information processing unit 33 of the lighting control device 30a resets (initializes) the count value and stops counting (S28). As a result, the transmission of the second control signal scheduled after the end of the count is canceled.

[0044] When a person is detected by the motion sensor 31 in step S26, the information processor 33 of the lighting control device 30b starts counting the control hold time (S29). When the information processor 33 of the lighting control device 30b finishes counting the control hold time (S30), it wirelessly transmits a second control signal to the plurality of lighting devices 20 to transition the plurality of lighting devices 20 from the first dimming state to the second dimming state (S31). When the counting ends, the count value is reset (initialized).

[0045] Each of the plurality of lighting devices 20 receives the second control signal and transitions from the first dimming state to the second dimming state based on the received second control signal (S32).

[0046] In this way, when a person is detected by the motion sensor 31, each of the multiple lighting control devices 30 transmits the first control signal not only to the multiple lighting fixtures 20 but also to the other lighting control devices 30. As a result, in operation example 2, the lighting control device 30b that detects a person later can make the lighting control device 30a that detected the person earlier recognize that a person has been detected by the lighting control device 30b.

[0047] Furthermore, when each of the multiple lighting control devices 30 receives a first control signal from another lighting control device 30 while counting the control retention time, it stops counting and cancels the transmission of a second control signal that was scheduled after the count ends. As a result, in operation example 2, each of the multiple lighting devices 20 goes into the first dimming state based on the first control signal transmitted by lighting control device 30a that detected a person first, and goes from the first dimming state to the second dimming state based on the second control signal transmitted by lighting control device 30b that detected a person later. This allows the lighting system 10 to extend the time that the multiple lighting devices 20 are in the first dimming state.

[0048] [Variations] In the above operational examples 1 and 2, the dimming ratio in the first dimming state is specified in the first control signal (in other words, the first control signal includes information indicating the dimming ratio), but the dimming ratio may be stored (registered) in advance in the memory units 24 of the multiple lighting fixtures 20 during initial configuration, etc., and it is not essential that the dimming ratio in the first dimming state be specified in the control signal.

[0049] When the dimming ratio in the first dimming state is specified in the first control signal, the user only needs to change the settings of the multiple lighting control devices 30 when changing the dimming ratio. Since the number of multiple lighting control devices 30 is usually smaller than the number of multiple lighting fixtures 20, this has the advantage that the setting change is easier than a configuration that requires changing the setting of each of the multiple lighting fixtures 20. When the dimming ratio in the first dimming state is pre-stored in memory unit 24 of the multiple lighting fixtures 20, information indicating the dimming ratio can be omitted in the first control signal, which has the advantage that the amount of information in the first control signal can be reduced.

[0050] The dimming ratio in the second dimming state may be specified in the second control signal, or may be stored (registered) in advance in memory 24 of multiple lighting fixtures 20 during initial setup or the like.

[0051] When the dimming ratio in the second dimming state is specified in the second control signal, the user only needs to change the settings of the multiple lighting control devices 30 when changing the dimming ratio. Since the number of multiple lighting control devices 30 is usually smaller than the number of multiple lighting fixtures 20, this has the advantage that the setting change is easier than a configuration that requires changing the setting of each of the multiple lighting fixtures 20. When the dimming ratio in the second dimming state is pre-stored in memory unit 24 of the multiple lighting fixtures 20, information indicating the dimming ratio can be omitted in the second control signal, which has the advantage that the amount of information in the second control signal can be reduced.

[0052] In addition, in the operation examples 1 and 2, it has been described that upon receiving the second control signal, lighting device 20 returns to the dimmed state that lighting device 20 had before receiving the first control signal. However, upon receiving the second control signal, lighting device 20 may transition to a predetermined dimmed state that is unrelated to the dimmed state of lighting device 20 before receiving the first control signal. In other words, it is not necessary for the dimmed state to be restored.

[0053] [Effects, etc.] Hereinafter, examples of inventions that can be obtained from the disclosure of this specification will be given, and the effects and the like that can be obtained from the inventions will be described.

[0054] Invention 1 is a lighting system 10 comprising a lighting fixture 20 and multiple lighting control devices 30, each of which, upon detecting a person, wirelessly transmits a first control signal to the lighting fixture 20 and the other lighting control devices 30 for transitioning the lighting fixture 20 to a first dimming state, and also starts counting a control retention time, and at an end timing when the counting of the control retention time ends, wirelessly transmits a second control signal to the lighting fixture 20 for transitioning the lighting fixture 20 from the first dimming state to a second dimming state that is darker than the first dimming state.

[0055] In such a lighting system 10, each of the multiple lighting control devices 30 can cause the other lighting control devices 30 to recognize that the lighting control device 30 has detected a person by transmitting a first control signal to the other lighting control devices 30 in response to the lighting control device 30 detecting a person.

[0056] Invention 2 is a lighting system 10 of Invention 1, in which each of the multiple lighting control devices 30 stops counting the control hold time when it receives a first control signal transmitted by another lighting control device 30 before the counting of the control hold time ends.

[0057] In such a lighting system 10, when each of the multiple lighting control devices 30 receives a first control signal from another lighting control device 30 while counting the control retention time, it stops counting and cancels the transmission of a second control signal that was scheduled after the count ends. Thus, in the lighting system 10, each of the multiple lighting devices 20 goes into the first dimming state based on the first control signal transmitted by the lighting control device 30a that detected a person first, and goes from the first dimming state to the second dimming state based on the second control signal transmitted by the lighting control device 30b that detected a person later. This allows the lighting system 10 to extend the time that the multiple lighting devices 20 are in the first dimming state.

[0058] Invention 3 is the lighting system 10 of Invention 1 or 2, in which the lighting system 10 includes a plurality of lighting fixtures 20 that have been grouped in advance, and each of a plurality of lighting control devices 30 wirelessly transmits a first control signal to the plurality of grouped lighting fixtures 20 and to the other lighting control devices 30, and wirelessly transmits a second control signal to the plurality of grouped lighting fixtures 20.

[0059] Such a lighting system 10 can place a pre-grouped number of lighting fixtures 20 in a first dimming state for at least the control hold time.

[0060] A fourth aspect of the present invention is lighting system 10 according to any one of the first to third aspects, wherein lighting device 20 transitions from the second dimming state to the first dimming state based on the received first control signal.

[0061] In such a lighting system 10, after receiving the second control signal, each of the plurality of lighting fixtures 20 can return to the second dimming state it was in before receiving the first control signal.

[0062] A fifth aspect of the present invention is the lighting system 10 of any one of the first to fourth aspects of the present invention, wherein the second dimming state is a light-off state.

[0063] In such a lighting system 10, each of the plurality of lighting devices 20 can transition to an off state after receiving the second control signal.

[0064] Invention 6 is a lighting control device 30 that includes a human presence sensor 31, a wireless communication unit 32, and an information processing unit 33 that, when the human presence sensor 31 detects a person, wirelessly transmits a first control signal for transitioning the lighting device 20 to a first dimming state to the lighting device 20 and another lighting control device 30 using the wireless communication unit 32, and starts counting a control retention time, and at an end timing when the counting of the control retention time ends, the information processing unit 33 wirelessly transmits a second control signal to the lighting device 20 using the wireless communication unit 32, for transitioning the lighting device 20 from the first dimming state to a second dimming state that is darker than the first dimming state.

[0065] Such a lighting control device 30 can make the other lighting control device 30 aware that the lighting control device 30 has detected a person by transmitting the first control signal to the other lighting control device 30.

[0066] Invention 7 is a control method executed by a lighting control device 30 equipped with a human presence sensor 31, the control method including the steps of: when the human presence sensor 31 detects a person, wirelessly transmitting a first control signal to the lighting device 20 and another lighting control device 30 for transitioning the lighting device 20 to a first dimming state, and starting counting a control retention time; and, at an end timing when the counting of the control retention time ends, wirelessly transmitting a second control signal to the lighting device 20 for transitioning the lighting device 20 from the first dimming state to a second dimming state that is darker than the first dimming state.

[0067] According to this control method, the lighting control device 30 can cause the other lighting control device 30 to recognize that the lighting control device 30 has detected a person by transmitting a first control signal to the other lighting control device 30.

[0068] (Other embodiments) Although the embodiment has been described above, the present invention is not limited to the above embodiment.

[0069] For example, in the above embodiment, the process executed by a specific processing unit may be executed by another processing unit. Also, the order of multiple processes may be changed, or multiple processes may be executed in parallel.

[0070] 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.

[0071] 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.

[0072] 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, or may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0073] For example, the present invention may be realized as the lighting system, lighting fixture, or lighting control device of the above embodiments, or as a method executed by a computer of the lighting system, lighting fixture, lighting control device, or the like. The present invention may be realized as a program for causing a computer to execute such a method, or as a computer-readable non-transitory recording medium on which such a program is recorded. Such a program includes an upgrade program for causing an existing lighting control device to operate like the lighting control device of the above embodiments.

[0074] 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]

[0075] 10. Lighting System 20 Lighting equipment 21, 32 Wireless Communication Section 22 Light source 23, 33 Information Processing Section 24, 34 Storage section 30, 30a, 30b Lighting control device 31 Human Sensor 50 Indoor space

Claims

1. Lighting equipment and A plurality of lighting control devices, Each of the plurality of lighting control devices When a person is detected, a first control signal for causing the lighting device to transition to a first dimming state is wirelessly transmitted to the lighting device and another lighting control device, and a count of a control retention time is started; At an end timing when the count of the control retention time ends, a second control signal for transitioning the lighting device from the first dimming state to a second dimming state that is darker than the first dimming state is wirelessly transmitted to the lighting device. Lighting system.

2. Each of the plurality of lighting control devices stops counting the control hold time when the lighting control device receives the first control signal transmitted by another lighting control device before the counting of the control hold time ends.

10. The lighting system of claim 1.

3. The lighting system includes a plurality of the lighting fixtures that are pre-grouped, Each of the plurality of lighting control devices wirelessly transmitting the first control signal to the grouped plurality of lighting devices and to another lighting control device; wirelessly transmitting the second control signal to the group of lighting devices; 3. A lighting system according to claim 1 or 2.

4. The lighting device transitions from the second dimming state to the first dimming state based on a received first control signal.

3. A lighting system according to claim 1 or 2.

5. The second dimming state is a light-off state.

3. A lighting system according to claim 1 or 2.

6. A human presence sensor, A wireless communication unit; an information processing unit that, when the motion sensor detects a person, wirelessly transmits a first control signal to the lighting device and another lighting control device using the wireless communication unit, and starts counting a control retention time; The information processing unit wirelessly transmits, to the lighting device using the wireless communication unit, a second control signal for transitioning the lighting device from the first dimming state to a second dimming state that is darker than the first dimming state, at an end timing when counting of the control retention time ends. Lighting control device.

7. A control method executed by a lighting control device equipped with a human presence sensor, wirelessly transmitting a first control signal to the lighting device and another lighting control device when the human presence sensor detects a human, for transitioning the lighting device to a first dimming state, and starting counting a control retention time; and wirelessly transmitting, to the lighting device, a second control signal for transitioning the lighting device from the first dimming state to a second dimming state that is darker than the first dimming state, at an end timing when counting of the control hold time ends. Control methods.

8. A program for causing the lighting control device to execute the control method according to claim 7.

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