Lighting system, mode control method, and mode control program

Abstract

To suppress a deterioration in convenience.SOLUTION: According to one example of the present invention, a lighting system includes a lighting part for performing lighting, a detection part, a mode switching part, an information holding part, and a switching signal transmission part. The detection part operates by power supplied to a device including the lighting part to detect at least one detection object of the existence of a person and movement of the person. The mode switching part switches a low power consumption mode for setting operation for suppressing power consumption of the detection part from a plurality of operation candidates and a normal mode for performing no suppression of the detection part as an operation mode of the detection part. The information holding part holds other device identification information being information of a device corresponding to another detection part existing around the lighting part. The switching signal transmission part transmits a switching signal for switching the operation mode of the other detection part from the low power consumption mode to the normal mode on the basis of the identification information held by the information holding part if the detection part detects the detection object.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] FIELD Embodiments of the present invention relate to a lighting system, a mode control method, and a mode control program. [Background technology]

[0002] Conventionally, from the viewpoint of reducing energy consumption, there are known techniques for reducing the power consumption of lighting. For example, a technique has been disclosed in which a motion sensor having multiple operation modes, including a low power consumption mode that reduces power consumption and a normal mode, receives a control command based on the sensing operation of another motion sensor and switches the operation mode (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-230781 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional technology, since the low power consumption mode is an operating mode in which sensing operations are not performed, there is an issue that sensing operations are not performed in human presence sensors that are operating in the low power consumption mode, resulting in reduced convenience.

[0005] The problem to be solved by the present invention is to provide a lighting system, a mode control method, and a mode control program that can suppress a decrease in convenience. [Means for solving the problem]

[0006] A lighting system according to an embodiment includes an illumination unit that provides illumination, a detection unit, a mode switching unit, an information storage unit, and a switching signal transmission unit. The detection unit operates using power supplied to a device including the illumination unit and detects at least one of the presence and movement of a person as a detection target. The mode switching unit switches the operation mode of the detection unit between a low power consumption mode, in which an operation that reduces the power consumption of the detection unit is set from a plurality of operation candidates, and a normal mode, in which the detection unit is not suppressed. The information storage unit stores other device identification information, which is identification information of devices corresponding to other detection units located near the illumination unit. When the detection unit detects a detection target, the switching signal transmission unit transmits a switching signal that switches the operation mode of the other detection units from the low power consumption mode to the normal mode based on the identification information stored in the information storage unit. [Effects of the Invention]

[0007] According to the present invention, it is possible to suppress a decrease in convenience. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of the operation of a plurality of lighting devices included in a lighting system according to an embodiment. [Figure 2] FIG. 2 is a diagram illustrating an example of the configuration of a lighting system according to the embodiment. [Figure 3] FIG. 3 is a diagram illustrating an example of the configuration of the lighting device according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating an example of the configuration of a transmission processing unit in the processing unit of the lighting device according to the embodiment. [Figure 5] FIG. 5 is a diagram illustrating an example of the configuration of a reception processing unit in the processing unit of the lighting device according to the embodiment. [Figure 6] FIG. 6 is a flowchart illustrating an example of processing by the processing unit of the lighting device according to the embodiment. [Figure 7] FIG. 7 is a flowchart showing an example of power saving processing by the processing unit of the lighting device according to the embodiment. [Figure 8]FIG. 8 is a flowchart illustrating an example of normal mode processing by the processing unit of the lighting device according to the embodiment. [Figure 9] FIG. 9 is a flowchart illustrating an example of other device identification information processing by the processing unit of the lighting device according to the embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of the configuration of a lighting system according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The lighting systems 100 and 100A according to the embodiments described below include a lighting unit 11 that provides illumination, a detection unit 15, a mode switching unit 32, an information storage unit 33, and a switching signal transmission unit 40. The detection unit 15 operates using power supplied to a device including the lighting unit 11 and detects at least one of the presence and movement of a person as a detection target. The mode switching unit 32 switches the operation mode of the detection unit 15 between a low power consumption mode, in which an operation to reduce power consumption by the detection unit 15 is selected from multiple operation candidates, and a normal mode, in which power consumption by the detection unit 15 is not reduced. The information storage unit 33 stores other device identification information, which is identification information of devices corresponding to other detection units 15 located near the lighting unit 11. When the detection unit 15 detects a detection target, the switching signal transmission unit 40 transmits a switching signal to switch the operation mode of the other detection units 15 from the low power consumption mode to the normal mode based on the identification information stored in the information storage unit 33.

[0010] Furthermore, the lighting systems 100, 100A according to the embodiments described below include a switching signal receiving unit 50 that receives a switching signal for switching the operation mode from the low power consumption mode to the normal mode, and when the switching signal receiving unit 50 receives the switching signal, the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode.

[0011] Furthermore, the lighting systems 100, 100A according to the embodiments described below include a specific signal transmitting unit 41 that repeatedly transmits a specific signal at a predetermined timing when the operation mode of the detection unit 15 is a low power consumption mode and the operation of the low power consumption mode is the suspension of operation of the detection unit 15.

[0012] In addition, in the lighting systems 100 and 100A according to the embodiments described below, the detection unit 15 detects the ambient brightness, and the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode based on the brightness detection result by the detection unit 15.

[0013] Furthermore, the lighting systems 100, 100A according to the embodiments described below include an other device identification information receiving unit 51 and a storage processing unit 36. The other device identification information receiving unit 51 receives a signal including other device identification information that is transmitted from a device corresponding to the other detection unit 15. When the detection unit 15 detects that another lighting unit 11 in a device that supplies power to the other detection unit 15 is turned on during a predetermined period and the other device identification information receiving unit 51 receives a signal including identification information of the device corresponding to the other detection unit 15, the storage processing unit 36 ​​causes the information storage unit 33 to store the identification information received by the other device identification information receiving unit 51 as other device identification information.

[0014] Furthermore, the lighting systems 100 and 100A according to the embodiments described below include a storage processing unit 36 ​​that causes the information storage unit 33 to store information corresponding to the brightness change pattern detected by the detection unit 15 as other device identification information.

[0015] Furthermore, the lighting systems 100 and 100A according to the embodiments described below include a storage processing unit 36 ​​that causes the information storage unit 33 to store, as other device identification information, identification information of a device corresponding to another detection unit 15 whose difference in detection timing between the detection unit 15 and the detection target is less than a threshold value.

[0016] Furthermore, the lighting systems 100, 100A according to the embodiments described below include a determination processing unit 37 and a low power consumption operation setting unit 38. The determination processing unit 37 determines the frequency with which the detection target is detected by the detection unit 15. The low power consumption operation setting unit 38 sets, from among a plurality of operation candidates, an operation candidate according to the frequency determined by the determination processing unit 37 as an operation in the low power consumption mode.

[0017] Furthermore, the lighting systems 100, 100A according to the embodiments described below include a determination processing unit 37 and a low power consumption operation setting unit 38. The determination processing unit 37 determines the difference in detection timing of the detection target between a plurality of detection units 15 including a detection unit 15 and another detection unit 15. The low power consumption operation setting unit 38 selects an operation candidate from a plurality of operation candidates according to the difference in detection timing between the plurality of detection units 15, and sets the selected operation candidate as an operation in the low power consumption mode.

[0018] Hereinafter, a lighting system, a mode control method, and a mode control program according to an embodiment will be described with reference to the drawings. Components having the same functions in the embodiments will be assigned the same reference numerals, and duplicated descriptions will be omitted. Note that the lighting system, the mode control method, and the mode control program described in the following embodiments are merely examples and do not limit the embodiments.

[0019] In the following embodiments, the lighting system is installed on the ceiling of various facilities such as buildings, public institutions such as community centers, etc., but it can also be installed in any facility other than these, such as theaters, movie theaters, etc. Note that the following embodiments may be combined as appropriate within a consistent range.

[0020] Fig. 1 is a diagram showing an example of the operation of a plurality of lighting devices included in a lighting system according to an embodiment. As shown in Fig. 1, a lighting system 100 according to an embodiment includes a plurality of lighting devices 1a, 1b, 1c, 1d, 1e, and 1f. Hereinafter, when the plurality of lighting devices 1a, 1b, 1c, 1d, 1e, and 1f are referred to without being individually distinguished, they may be referred to as lighting device 1.

[0021] Each lighting device 1 includes a lighting unit 11 that provides illumination and a detection unit 15 that detects at least one of the presence and movement of a person as a detection target. The detection unit 15 operates using power supplied to the lighting device 1 that includes the lighting unit 11. The lighting device 1 is an example of a device that includes the lighting unit 11, and is an example of a device that corresponds to the detection unit 15.

[0022] The operation modes of the detection unit 15 include a low power consumption mode in which the operation to reduce the power consumption of the detection unit 15 is set from a plurality of operation candidates, and a normal mode in which the power consumption of the detection unit 15 is not reduced.

[0023] The multiple operation candidates include multiple operation candidates that suppress the operation of the detection unit 15 and multiple operation candidates that stop the operation of the detection unit 15. For example, in the example shown in FIG. 1A, the multiple operation candidates include m% operation in normal mode and stopping (OFF) the operation of the detection unit 15. In the above example, m may be a value greater than 0 and less than 100.

[0024] For example, when the sensor 12 includes an image sensor, the operation at m% of normal mode is an operation in which the frame rate of the image sensor is set to m% of normal mode and the presence or movement of a person is detected based on the image data output from the sensor 12.

[0025] In the example shown in FIG. 1A, lighting device 1a is set to operate at 50% of normal mode as its low power consumption mode operation, lighting devices 1b and 1e are set to operate at 30% of normal mode as its low power consumption mode operation, lighting device 1d is set to operate at 90% of normal mode as its low power consumption mode operation, and lighting devices 1c and 1f are set to stop the operation of detection unit 15 as its low power consumption mode operation.

[0026] A plurality of lighting devices 1a, 1b, 1c, 1d, 1e, and 1f are arranged, for example, on the same floor of a building, with lighting device 1d being arranged at the entrance, lighting devices 1c and 1f being arranged in an area far from the entrance, and lighting devices 1a, 1b, and 1e being arranged in an area between lighting device 1d and lighting devices 1c and 1f.

[0027] Illumination device 1d, which is closer to the entrance, operates in low power consumption mode at 90% of its normal mode, so the degree of reduction in its ability to detect human presence and movement is low. Therefore, illumination device 1d can detect human presence and movement while suppressing power consumption.

[0028] In addition, lighting devices 1a, 1b, and 1e, which are located a short distance from the entrance, are set to operate in a low power consumption mode that is 30% to 50% of the normal mode, and lighting devices 1c and 1f, which are even further away from the entrance, are set to stop operation of the detection unit 15 as their low power consumption mode operation.

[0029] When a person enters the entrance from the state shown in FIG. 1A, the presence or movement of the person is detected by lighting device 1d. Lighting device 1d holds identification information of surrounding lighting devices 1a, 1b, and 1e. When lighting device 1d detects the presence or movement of a person, it outputs a switching signal to switch the operation mode of detection units 15 of lighting devices 1a, 1b, and 1e from low power consumption mode to normal mode based on the identification information of lighting devices 1a, 1b, and 1e. In lighting device 1d, the identification information of lighting devices 1a, 1b, and 1e is an example of identification information of devices corresponding to other detection units.

[0030] For example, the lighting device 1d outputs a switching signal including the identification information of the lighting devices 1a, 1b, and 1e by multicast. Alternatively, the lighting device 1d can output a plurality of switching signals including corresponding identification information of the identification information of the lighting devices 1a, 1b, and 1e by unicast.

[0031] When lighting devices 1a, 1b, and 1e receive the switching signal output from lighting device 1d, they switch their operating modes from the low power consumption mode to the normal mode, as shown in (B) of Fig. 1. Furthermore, lighting devices 1b and 1e retain identification information of lighting devices 1c and 1f, and when they detect the presence or movement of a person, they output switching signals to switch the detection units 15 of lighting devices 1c and 1f from the low power consumption mode to the normal mode. In lighting devices 1b and 1e, the identification information of lighting devices 1c and 1f is an example of identification information of devices corresponding to other detection units.

[0032] In this way, in the lighting system 100, the operation of the low power consumption mode of the detection unit 15 is set from among a plurality of operation candidates in each lighting device 1, so that the operation of the low power consumption mode can be set to an appropriate operation depending on the installation location. Therefore, in the lighting system 100, it is possible to reduce power consumption while suppressing a decrease in convenience.

[0033] Furthermore, in the lighting system 100, each lighting device 1 stores identification information of other lighting devices 1 that have other detection units 15 to which the switching signal is output, and therefore it is possible to limit the other lighting devices 1 that are to return to the normal mode when the presence or movement of a person is detected. This also makes it possible for the lighting system 100 to reduce power consumption while preventing a decrease in convenience.

[0034] The following describes in further detail the configuration and operation of the lighting system 100. Fig. 2 is a diagram showing an example of the configuration of the lighting system 100 according to an embodiment. As shown in Fig. 2, the lighting system 100 includes a plurality of lighting devices 1, a lighting control panel 3, a relay device 4, and cloud servers 5A and 5B.

[0035] The lighting control panel 3 is an electrical device that supplies power to the multiple lighting devices 1, and, for example, controls the on / off of the power supply to the lighting devices 1 and adjusts the brightness of the lighting devices 1. The relay device 4 is a gateway device that, for example, transmits a detection signal including the detection result of the detection unit 15 in the lighting device 1 to one of the cloud servers 5A and 5B. The relay device 4 can also transmit a signal transmitted from the cloud servers 5A and 5B to the lighting devices 1.

[0036] The relay device 4 is wirelessly connected to the plurality of lighting devices 1, receives detection signals wirelessly transmitted from each of the plurality of lighting devices 1, and transmits the received detection signals to either of the cloud servers 5A and 5B. The relay device 4 can also receive detection signals output from each of the plurality of lighting devices 1 via the lighting control panel 3 and transmit the received detection signals to either of the cloud servers 5A and 5B. The lighting control panel 3 can transmit the detection results output from each of the plurality of lighting devices 1 to the relay device 4 using, for example, BACnet (Building Automation and Control networking protocol).

[0037] Cloud servers 5A and 5B are communicatively connected to relay device 4 via network N. Network N is, for example, a wide area network (WAN) such as the Internet, but is not limited to this example and may include mobile communication networks such as LTE (Long Term Evolution), 4G (4th Generation: fourth generation mobile communication system), and 5G (5th Generation: fifth generation mobile communication system).

[0038] Cloud servers 5A and 5B are virtual servers located in data centers in different regions. The cloud server to which the detection signal of lighting device 1 is transmitted is the cloud server selected from cloud servers 5A and 5B in response to a demand response request, but is not limited to this example.

[0039] For example, the cloud server to which the detection signal of the lighting device 1 is transmitted may be a cloud server selected according to the operating states of the multiple lighting devices 1 detected by the detection units 15. For example, cloud server A may be selected when the proportion of the multiple lighting devices 1 whose operating mode is the low power consumption mode is equal to or greater than a threshold, and cloud server B may be selected when the proportion of the multiple lighting devices 1 whose operating mode is the low power consumption mode is less than a total threshold.

[0040] Alternatively, cloud server A may be selected when the total power consumption of the plurality of lighting devices 1 is equal to or greater than a threshold, and cloud server B may be selected when the total power consumption of the plurality of lighting devices 1 is less than the threshold. Hereinafter, when cloud servers 5A and 5B are not individually indicated, they may be referred to as cloud servers 5. Note that switching between cloud servers 5 is performed on the cloud server 5 side, but may also be performed in response to a request from the lighting control panel 3 or the lighting device 1.

[0041] 3 is a diagram illustrating an example of the configuration of the lighting device 1 according to the embodiment. As shown in FIG. 3, the lighting device 1 includes a communication unit 10, a lighting unit 11, a sensor 12, a storage unit 13, and a processing unit 14.

[0042] The communication unit 10 includes a wired communication unit that performs wired communication and a wireless communication unit that performs wireless communication. The wired communication unit in the communication unit 10 is connected to be able to communicate with the lighting control panel 3. The wired communication unit can perform wired communication in accordance with communication standards such as DALI (Digital Addressable Lighting Interface) (registered trademark), DMX (Digital Multiplex) 512, or Ethernet (registered trademark).

[0043] The wireless communication unit in the communication unit 10 performs wireless communication with the relay device 4. The wireless communication unit can perform wireless communication in accordance with communication standards such as WiLIA (Wireless Lighting Intelligent Access), Bluetooth (registered trademark), BLE (Bluetooth (registered trademark) Low Energy), or wireless LAN (Local Area Network).

[0044] The lighting unit 11 includes a light source such as an LED (Light Emitting Diode) and illuminates the surrounding environment where it is installed. For example, the lighting unit 11 is controlled by the processing unit 14 to be turned on or off and to adjust the dimming level, and the lighting unit 11 irradiates light into an illumination area. When the lighting device 1 is installed on a ceiling, the lighting unit 11 illuminates the area below.

[0045] The sensor 12 is a sensor that operates using power supplied to the lighting device 1, which is a device that includes the lighting unit 11, and includes an image sensor. The image sensor is an image sensor whose imaging area is the area illuminated by the lighting unit 11, and is, for example, a CMOS (Complementary Metal Oxide Semiconductor) image sensor or a CCD (Charge Coupled Device) image sensor. Note that the image sensor may also be an image sensor whose imaging area is outside the area illuminated by the lighting unit 11.

[0046] The storage unit 13 can be realized by a semiconductor memory element such as a RAM (Random Access Memory) or a flash memory, or a storage device such as a hard disk, an optical disk, etc. The storage unit 13 stores information such as setting operation information, own device identification information, other device identification information, and detection history.

[0047] The set operation information is information indicating the operation of the low power consumption mode set in the lighting device 1. For example, the set operation information is information indicating an operation automatically set by the processing unit 14 from among a plurality of operation candidates, or information indicating an operation set by the installer from among a plurality of operation candidates.

[0048] The own device identification information is identification information of the lighting device 1. The other device identification information is identification information of other lighting devices 1 associated with the lighting device 1, and includes identification information of one or more other lighting devices 1. The detection history is information indicating the detection results of the detection target by the detection unit 15 of the processing unit 14, and includes information indicating the type of the detection target, information indicating the detection content, and information indicating the time the detection target was detected.

[0049] The types of detection targets include, but are not limited to, the presence of a person, the movement of a person, etc. Furthermore, the detection content includes, but is not limited to, the position of a person present in the detection area, the direction of movement of the person, the movement speed of the person, etc. Furthermore, the detection history also includes information indicating the detection results of the detection targets by the detection unit 15 of the other lighting device 1.

[0050] The processing unit 14 can be realized by a microcomputer, etc. The microcomputer is equipped with a processor such as a CPU or an MPU (Micro Processing Unit), and storage devices such as a ROM (Read Only Memory) and a RAM.

[0051] The ROM stores programs, and processors such as the CPU execute the programs stored in the ROM to realize various controls and functions. The RAM is used as a memory area required for the CPU and other processors to execute calculations.

[0052] The processing unit 14 may be realized by an integrated circuit such as an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a system-on-a-chip (SoC).

[0053] In addition, the processing unit 14 can read programs or data stored in a recording medium (not shown) via the communication unit 10, and provides the read data or program (an example of a mode control program) to the processor via the memory.

[0054] The processor loads the program from the recording medium into the memory and executes the loaded program. The recording medium may be, but is not limited to, an optical recording medium such as a DVD (Digital Versatile Disc) or a PD (Phase Change Rewritable Disc) or a semiconductor memory.

[0055] The processing unit 14 includes an illumination control unit 30, a detection processing unit 31, a mode switching unit 32, an information storage unit 33, a transmission processing unit 34, a reception processing unit 35, a storage processing unit 36, a determination processing unit 37, and a low power consumption operation setting unit 38. The detection unit 15 described above is configured to include the sensor 12 and the detection processing unit 31.

[0056] The lighting control unit 30 controls the turning on and off of the lighting unit 11 and the dimming of the lighting unit 11. The lighting control unit 30 turns on, turns off, and dims the lighting unit 11, for example, based on control information transmitted from the lighting control panel 3.

[0057] Furthermore, the illumination control unit 30 turns on the illumination unit 11 when the operation mode of the detection processing unit 31 is switched from the low power consumption mode to the normal mode by the mode switching unit 32. Furthermore, the illumination control unit 30 turns off the illumination unit 11 when the operation mode of the detection processing unit 31 is switched from the normal mode to the low power consumption mode by the mode switching unit 32.

[0058] In addition, when specific control information from the lighting control panel 3 or a control device not shown is received by the reception processing unit 35, the lighting control unit 30 causes the lighting unit 11 to blink in a pattern corresponding to the device identification information stored in the memory unit 13.

[0059] For example, when the device identification information is represented by a number of one or more digits, the pattern according to the device identification information is represented by a change according to the number of digits. For example, the pattern according to the device identification information is a pattern in which lighting is performed sequentially from the most significant digit to the least significant digit for a lighting time length according to the size of the digit, with a predetermined off period for each digit in between, but is not limited to such an example as long as the device identification information can be notified by blinking.

[0060] The detection processing unit 31 detects the presence and movement of a person as a detection target based on information output from the sensor 12. For example, the detection processing unit 31 executes a detection process for detecting the presence and absence of a person in the detection range based on image data output from the sensor 12.

[0061] The presence or absence of a person in the detection range is detected, for example, by detecting the features of the person's face or body. The detection processing unit 31 detects the presence or absence of a person in the detection range using, for example, a deep learning model such as a convolutional neural network, but is not limited to this example.

[0062] In addition, the detection processing unit 31 detects people using a deep learning model or the like, predicts the person's position, movement speed, movement direction, etc. using a Kalman filter or the like, and tracks the person's movement between frames, but is not limited to such examples.

[0063] Furthermore, the detection processing unit 31 detects the brightness of the surroundings based on the image data output from the sensor 12. For example, the detection processing unit 31 acquires the brightness values ​​of all pixels from the image data output from the sensor 12, and detects the average brightness value, which is the average value of the brightness values ​​of all pixels, as the brightness of the surroundings of the sensor 12.

[0064] In addition, the detection processing unit 31 can obtain the brightness values ​​of pixels in a specific area from the image data output from the sensor 12, and detect the average brightness value, which is the average brightness value of the pixels in the specific area, as the brightness around the sensor 12.

[0065] The detection processing unit 31 can also detect the brightness of the image data output from the sensor 12 as the brightness around the sensor 12. For example, the detection processing unit 31 acquires the RGB values ​​of all pixels of the image data output from the sensor 12 and calculates the average value of the acquired RGB values ​​for each pixel as the brightness of the pixel. The detection processing unit 31 detects the average value of the pixel brightness as the brightness around the sensor 12. The detection processing unit 31 can also detect the average value of the brightness of pixels in a specific region as the brightness around the sensor 12.

[0066] When the detection processing unit 31 detects the presence or movement of a person based on image data output from the sensor 12, it associates information indicating the detection result with information indicating the detection time and adds the information to the detection history in the memory unit 13.

[0067] The above-described detection unit 15 includes a sensor 12 and a detection processing unit 31. Note that the detection processing unit 31 may be configured by hardware (e.g., a microcomputer) different from other functional units of the processing unit 14. For example, the detection unit 15 may be configured by a semiconductor device including the sensor 12 and the detection processing unit 31.

[0068] The mode switching unit 32 switches the operation mode of the detection unit 15 between a low power consumption mode in which an operation that reduces the power consumption of the detection unit 15 is set from multiple operation candidates, and a normal mode in which the power consumption of the detection unit 15 is not reduced.

[0069] The low power consumption mode is an operation mode in which an operation set from a plurality of operation candidates is performed, which is indicated by the set operation information stored in the storage unit 13. As described above, the plurality of operation candidates include m% operation in the normal mode and stopping (OFF) the operation of the detection processing unit 31. In the above example, m may be a value greater than 0 and less than 100.

[0070] For example, when the sensor 12 includes an image sensor, the operation at m% of normal mode is an operation in which the frame rate of the image sensor is set to m% of normal mode and the presence or movement of a person is detected based on the image data output from the sensor 12.

[0071] Furthermore, if the sensor 12 includes an image sensor, the operation at m% of normal mode may be, for example, an operation in which the resolution of the image sensor is set to m% of normal mode and the presence or movement of a person is detected based on image data output from the sensor 12.

[0072] Furthermore, when the sensor 12 includes an image sensor, the m% operation in the normal mode may be, for example, an operation in which m% of the images captured by the image sensor are used for the detection process. Furthermore, the m% operation in the normal mode may be, for example, an operation in which the ratio of the operating period of the detection unit 15 per unit time is m%.

[0073] For example, when the detection unit 15 detects the presence or movement of a person while the operation mode of the detection unit 15 is in the low power consumption mode, the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode. As a result, the detection unit 15 starts operating in the normal mode in which power consumption is not suppressed.

[0074] Furthermore, for example, when the operation mode of the detection unit 15 is the low power consumption mode, and a switching signal including the own device identification information stored in the storage unit 13 as other device identification information is received by a switching signal receiving unit 50 (described later) in the reception processing unit 35, the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode. This also causes the detection unit 15 to start operating in the normal mode in which power consumption is not suppressed.

[0075] Furthermore, the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode based on the brightness detection result by the detection unit 15. For example, when the operation mode of the detection unit 15 is the low power consumption mode, the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode based on the brightness detected by the detection unit 15. This also causes the detection unit 15 to start operating in the normal mode in which power consumption is not suppressed.

[0076] For example, when the operation mode of the detection unit 15 is in the low power consumption mode and the brightness detected by the detection unit 15 is equal to or greater than a threshold value, the mode switching unit 32 switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode.

[0077] Furthermore, for example, when a predetermined condition is satisfied while the operation mode of the detection unit 15 is in the normal mode, the mode switching unit 32 switches the operation mode of the detection unit 15 from the normal mode to the low power consumption mode. As a result, the detection unit 15 starts operating in the low power consumption mode in which power consumption is reduced and which is the operation indicated by the set operation information stored in the storage unit 13.

[0078] The predetermined conditions include, for example, a condition that an undetected state in which the detection unit 15 does not detect the presence or movement of a person continues for a predetermined period of time, or a condition that it is a specific time period (e.g., nighttime) or a specific day (e.g., a holiday), but are not limited to such examples.

[0079] The information storage unit 33 stores other device identification information, which is identification information of devices corresponding to other detection units 15 in the vicinity of the lighting unit 11. The information storage unit 33 stores, for example, other device identification information, which is identification information of other lighting devices 1 including other detection units 15 in the vicinity of the lighting device 1 including the detection unit 15. The information storage unit 33, for example, acquires other device identification information stored in the storage unit 13 from the storage unit 13, and stores the acquired other device identification information.

[0080] The other lighting device 1 corresponding to the other device identification information stored by the information storage unit 33 is the other lighting device 1 to which a switching signal is sent when the detection unit 15 detects the presence or movement of a person, and is information indicating an operation automatically set by the storage processing unit 36 ​​or information indicating an operation set by the installer from among multiple operation candidates. The other lighting device 1 is an example of a device corresponding to the other detection unit 15. Note that in the lighting device 1, the information storage unit 33 may be configured to function as a part of the memory unit 13.

[0081] The transmission processing unit 34 transmits various signals. Fig. 4 is a diagram showing an example of the configuration of the transmission processing unit 34 in the processing unit 14 of the lighting device 1 according to the embodiment. As shown in Fig. 4, the transmission processing unit 34 includes a switching signal transmitting unit 40, a specific signal transmitting unit 41, a device identification information transmitting unit 42, and a detection result transmitting unit 43.

[0082] When a detection target is detected by the detection unit 15, the switching signal transmission unit 40 transmits a switching signal from the communication unit 10 to switch the operation mode of the detection unit 15 of the other lighting device 1 from the low power consumption mode to the normal mode, based on the other device identification information stored in the information storage unit 33. The case where a detection target is detected by the detection unit 15 is, for example, when the detection unit 15 detects the presence of a person or the movement of a person, but is not limited to such examples.

[0083] The switching signal transmitted from the switching signal transmitting unit 40 via the communication unit 10 includes other device identification information. For example, when multiple pieces of other device identification information are held in the information holding unit 33, the switching signal transmitting unit 40 transmits the switching signal including the multiple pieces of other device identification information by multicast, or transmits multiple switching signals each including corresponding other device identification information from the multiple pieces of other device identification information by unicast. When the switching signal includes one piece of other device identification information, the one piece of other device identification information is included in the switching signal as destination information, but this example is not limiting.

[0084] The specific signal transmitting unit 41 repeatedly transmits a specific signal at a predetermined timing when the operation mode of the detecting unit 15 is the low power consumption mode and the operation of the low power consumption mode is the stop of the operation of the detecting unit 15. The specific signal transmitted from the specific signal transmitting unit 41 includes its own device identification information.

[0085] The predetermined timing is, for example, a timing that arrives at a predetermined cycle, for example, every 10 minutes, but is not limited to this example. The specific signal transmitter 41 transmits the specific signal to the cloud server 5, for example, via the communication unit 10, the relay device 4, and the network N. This allows the cloud server 5 to know that the operation mode of the detection unit 15 in the lighting device 1 that transmitted the specific signal is a low-power mode in which the operation of the detection unit 15 is stopped.

[0086] When a detection target is detected by the detection unit 15, the own device identification information transmission unit 42 broadcasts an identification information signal including the own device identification information stored in the storage unit 13. The own device identification information stored in the storage unit 13 is identification information of the lighting device 1 including the detection unit 15 that detected the detection target. The lighting device 1 that includes the detection unit 15 that detected the detection target is an example of a device corresponding to the detection unit 15 that detected the detection target.

[0087] Furthermore, the own device identification information transmission unit 42 can also broadcast an identification information signal including the own device identification information, which is the identification information of the lighting device 1, for example, at the timing when the lighting control unit 30 turns on the lighting unit 11. Furthermore, the own device identification information transmission unit 42 can also broadcast an identification information signal including the own device identification information, which is the identification information of the lighting device 1, for example, at the timing when the lighting control unit 30 turns off the lighting unit 11.

[0088] In addition, the local device identification information transmitting unit 42 can also broadcast an identification information signal including the local device identification information, which is the identification information of the lighting device 1, for example, when the lighting device 1 is started up or when control information from an external control device is received by the receiving processing unit 35.

[0089] The detection result transmission unit 43 transmits a detection signal including the detection result by the detection unit 15. For example, the detection result transmission unit 43 transmits the detection signal to the cloud server 5 via the communication unit 10, the relay device 4, and the network N. The detection result transmission unit 43 transmits the detection signal to the cloud server 5 at a timing that arrives at a predetermined cycle, for example. The detection result transmission unit 43 also transmits the detection signal to other lighting devices 1 by broadcast via the communication unit 10.

[0090] The detection signal transmitted from the detection result transmission unit 43 includes, for example, when the detection unit 15 detects the presence or absence of a person or human movement, detection presence / absence information including information indicating that the detection unit 15 has detected the presence or movement of a person, and detection content information indicating the position of the detected person, the speed at which the person is moving, the direction in which the person is moving, etc.

[0091] In addition, the detection signal transmitted from the detection result transmission unit 43 includes detection presence / absence information including information indicating that the detection unit 15 has not detected the presence or movement of a person, for example, if the detection unit 15 has not detected the presence or movement of a person.

[0092] The reception processing unit 35 receives various signals via the communication unit 10. Fig. 5 is a diagram showing an example of the configuration of the reception processing unit 35 in the processing unit 14 of the lighting device 1 according to the embodiment. As shown in Fig. 5, the reception processing unit 35 includes a switching signal receiving unit 50, an other device identification information receiving unit 51, and a detection signal receiving unit 52.

[0093] The switching signal receiving unit 50 receives a switching signal that switches the operation mode of the detection unit 15 from the low power consumption mode to the normal mode. The switching signal receiving unit 50 receives a switching signal that includes the device identification information stored in the storage unit 13 and is transmitted from another lighting device 1.

[0094] The other device identification information receiving unit 51 receives an identification information signal including other device identification information transmitted from another lighting device 1. The other lighting device 1 is an example of a device corresponding to the other detection unit 15. The identification information signal is transmitted from the other lighting device 1, for example, when the lighting unit 11 of the other lighting device 1 is turned on. In this case, the identification information signal may include information indicating that the lighting unit 11 of the other lighting device 1 is turned on.

[0095] The detection signal receiving unit 52 receives a detection signal transmitted from another lighting device 1. The detection signal includes, for example, detection presence / absence information including information indicating that the presence or movement of a person has been detected by the detection unit 15 of the other lighting device 1, and detection content information indicating the position, movement speed, movement direction, etc. of the detected person.

[0096] When the detection signal receiving unit 52 receives a detection signal transmitted from another lighting device 1, it adds information contained in the received detection signal to the detection history in the storage unit 13. The detection signal includes other device identification information, information indicating the detection time, etc. Furthermore, when the received detection signal does not include information indicating the detection time, the detection signal receiving unit 52 associates information indicating the reception time with the information contained in the received detection signal and adds the information to the detection history in the storage unit 13.

[0097] Returning to Fig. 3, the description of processing unit 14 in lighting device 1 continues. When any one of a plurality of conditions including a first condition, a second condition, and a third condition is satisfied, storage processing unit 36 ​​in processing unit 14 causes information storage unit 33 to store the other device identification information stored in information storage unit 33 in storage unit 13.

[0098] The first condition is, for example, a condition that other device identification information is received by the other device identification information receiving unit 51 during a predetermined period, and the change in ambient brightness detected by the detection unit 15 is greater than or equal to a threshold (for example, an increase in brightness is greater than or equal to a threshold, or a decrease in brightness is greater than or equal to a threshold).

[0099] The retention processing unit 36 ​​determines that the first condition is satisfied, for example, when, during a predetermined period, the detection unit 15 detects a change in brightness due to the lighting unit 11 of the other lighting device 1 being turned on and the identification information of the other lighting device 1 is transmitted from the other lighting device 1 and received by the other device identification information receiving unit 51.

[0100] When it is determined that the first condition is satisfied, the storage processing unit 36 ​​causes the identification information transmitted from the other lighting device 1 to be stored as other device identification information in the information storage unit 33. In this way, the storage processing unit 36 ​​causes the identification information of the nearby lighting device 1 to be stored in the information storage unit 33 as other device identification information.

[0101] In the lighting system 100, for example, the lighting units 11 of the lighting devices 1 are turned on one by one in response to control information from the lighting control panel 3 or a control device (not shown), and the identification information of the turned-on lighting device 1 is broadcast from the lighting device 1 that was turned on at the same time. This allows the lighting system 100 to cause the lighting devices 1 around the turned-on lighting device 1 to hold the identification information of the turned-on lighting device 1 as other device identification information.

[0102] The lighting device 1 may have the function of turning on the lighting unit 11 and transmitting a signal including its own device identification information at random timing within a predetermined period after power is supplied from the lighting control panel 3 and the lighting device 1 is started up.

[0103] The second condition is, for example, that the brightness change pattern detected by the detection unit 15 is a specific pattern. The specific pattern is a pattern according to the identification information of the other lighting device 1, and for example, when the identification information is represented by a number of one or more digits, the specific pattern is represented by a change according to the number of digits.

[0104] For example, a specific pattern is one in which the lights are turned on for a length of time corresponding to the size of the digit, with a predetermined off period for each digit, and are turned on sequentially from the most significant digit to the least significant digit, but is not limited to such an example.

[0105] The retention processing unit 36 ​​determines that the second condition is satisfied when the brightness change pattern detected by the detection unit 15 due to the lighting unit 11 of another lighting device 1 flashing in a specific flashing pattern is a specific pattern.

[0106] If it is determined that the second condition is satisfied, the storage processing unit 36 ​​causes the information storage unit 33 to store, as other device identification information, the identification information corresponding to the brightness change pattern detected by the detection unit 15. In this way, the storage processing unit 36 ​​causes the information storage unit 33 to store, as other device identification information, the identification information of the lighting device 1 present nearby.

[0107] In the lighting system 100, for example, by making the lighting units 11 of the lighting devices 1 blink one by one in a specific blinking pattern using control information from the lighting control panel 3 or a control device not shown, the lighting devices 1 around the blinking lighting device 1 can retain the identification information of the blinking lighting device 1 as other device identification information.

[0108] The lighting device 1 may have a function of flashing the lighting unit 11 in a specific flashing pattern at random timing within a predetermined period after power is supplied from the lighting control panel 3 and the lighting device 1 is started up.

[0109] The identification information corresponding to the brightness change pattern detected by the detection unit 15 is information obtained by converting the brightness change pattern detected by the detection unit 15, and is expressed, for example, as a numerical value, but is not limited to such an example. The brightness change pattern is not limited to a blinking pattern, and may be a bright and dark lighting pattern, etc.

[0110] The third condition is that the other lighting device 1 has another detection unit 15 that detects the presence or movement of a person at a similar timing. For example, the third condition is that, during a predetermined period, a detection timing difference, which is the difference between the timing at which a detection signal transmitted when the presence or movement of a person is detected by the other lighting device 1 is received and the timing at which the presence or movement of a person is detected by the detection unit 15, is equal to or less than a threshold value.

[0111] The retention processing unit 36 ​​determines, for each of the other lighting devices 1, whether a detection timing difference, which is the difference between the timing at which a signal including other device identification information broadcast from the other lighting devices 1 is received when the presence or movement of a person is detected by the other lighting devices 1 and the timing at which the presence or movement of a person is detected by the detection unit 15, is equal to or less than a threshold value, based on the detection history stored in the storage unit 13. The retention processing unit 36 ​​causes the information retention unit 33 to retain the identification information of the other lighting devices 1 for which the detection difference is equal to or less than the threshold value as other device identification information.

[0112] This allows the lighting device 1 to store, as other device identification information, in the information storage unit 33, identification information of other lighting devices 1 that have similar detection timings for detecting the presence or movement of a person. Note that the detection timing difference compared with the threshold for each other lighting device 1 is the smallest value when there are multiple detection timing differences, but it may also be the average or median of the top p smallest values ​​(p is an integer of 2 or greater), or a value that has been subjected to other processing. The detection timing difference may also be determined by the determination processing unit 37.

[0113] In addition, when two or more of a plurality of conditions including the first condition, the second condition, and the third condition are satisfied, the storage processing unit 36 ​​can also store the identification information of another lighting device 1 that satisfies two or more conditions in the information storage unit 33 as other device identification information.

[0114] The determination processing unit 37 determines the detection frequency, which is the frequency at which the detection target is detected by the detection unit 15. For example, the determination processing unit 37 determines the detection frequency, which is the frequency at which the detection target is detected by the detection unit 15, based on the detection history stored in the storage unit 13.

[0115] For example, when the operation mode of the detection unit 15 continues to be the normal mode for a predetermined period, the determination processing unit 37 determines the number of times that the detection unit 15 has detected the detection target as the detection frequency. Furthermore, the determination processing unit 37 can also determine the number of times that the detection unit 15 has detected the detection target within a predetermined period when the operation mode of the detection unit 15 is not the low power consumption mode in which the operation of the detection unit 15 is stopped as the detection frequency.

[0116] Furthermore, the determination processing unit 37 determines a detection timing deviation, which is a deviation in the detection timing of the detection target between the detection unit 15 and another detection unit 15. The detection timing deviation is a deviation in the detection timing of the detection target between the detection units 15 of the lighting devices 1.

[0117] For example, the determination processing unit 37 determines a difference in the timing of detection of the presence or movement of a person between the detection unit 15 and another detection unit 15, based on the detection history stored in the storage unit 13. The detection history stored in the storage unit 13 includes, for example, information indicating the time at which the detection unit 15 detected the presence or movement of a person, and information indicating the time at which the detection unit 15 of another lighting device 1 detected the presence or movement of a person.

[0118] The determination processing unit 37 determines a detection timing deviation, which is, for example, a deviation between the time when the detection unit 15 detects the presence or movement of a person and the time when the detection unit 15 detects the presence or movement of a person (or the time when the detection signal is received) of the person by the detection unit 15 of another lighting device 1. The detection timing deviation is, for example, a deviation between the detection times of the presence or movement of a person between lighting devices 1, and is, for example, a difference from the detection time by the detection unit 15 of the lighting device 1 with the earliest detection time.

[0119] The low power consumption operation setting unit 38 sets, as the operation in the low power consumption mode, an operation candidate from among the plurality of operation candidates according to the detection frequency determined by the determination processing unit 37. For example, the low power consumption operation setting unit 38 sets, as the operation in the low power consumption mode, an operation candidate that reduces power consumption as the detection frequency becomes lower.

[0120] When multiple operation candidates include m% of normal mode operations, the low power consumption operation setting unit 38 can set an operation candidate that reduces power consumption as an operation in low power consumption mode by making the value of m smaller as the detection frequency determined by the determination processing unit 37 decreases.

[0121] As a result, the low power consumption operation setting unit 38 can set the operation mode of the detection unit 15 of a lighting device 1 set near an entrance, for example, to a sensing state close to the normal mode, and can set the operation mode of the detection unit 15 of a lighting device 1 set far from the entrance, for example, to a sensing state close to the non-operation state of the detection unit 15. Therefore, the lighting system 100 can reduce power consumption while preventing a decrease in convenience.

[0122] Furthermore, the low power consumption operation setting unit 38 sets, as the operation in the low power consumption mode, an operation candidate according to the difference in detection timing of the detection target between the detection unit 15 and another detection unit 15 determined by the determination processing unit 37. For example, the lower the power consumption operation setting unit 38 sets, as the operation in the low power consumption mode, an operation candidate that reduces power consumption for a lighting device 1 with a larger detection timing difference determined by the determination processing unit 37.

[0123] For example, when multiple operation candidates include m% of normal mode operation, the low power consumption operation setting unit 38 can set an operation candidate that reduces power consumption as the low power consumption mode operation by decreasing the value of m as the detection timing deviation determined by the determination processing unit 37 increases.

[0124] Furthermore, the low power consumption operation setting unit 38 can also set, as the low power consumption mode operation, an operation candidate that reduces power consumption for a lighting device 1 with a later detection timing. For example, in the case of a lighting device 1 with the earliest detection timing by the detection unit 15, the low power consumption operation setting unit 38 sets 90% of the operation in the normal mode as the operation in the low power consumption mode.

[0125] Furthermore, in the case of a lighting device 1 having the second earliest detection timing by the detection unit 15, the low power consumption operation setting unit 38 sets 70% of the operation in the normal mode as the operation in the low power consumption mode. In the case of a lighting device 1 having the latest detection timing by the detection unit 15, the low power consumption operation setting unit 38 sets 30% of the operation in the normal mode as the operation in the low power consumption mode.

[0126] As a result, the low power consumption operation setting unit 38 can set the operation mode of the detection unit 15 of a lighting device 1 set near an entrance, for example, to a sensing state close to the normal mode, and can set the operation mode of the detection unit 15 of a lighting device 1 set far from the entrance, for example, to a sensing state close to the non-operation state of the detection unit 15. Therefore, the lighting system 100 can reduce power consumption while preventing a decrease in convenience.

[0127] Note that the detection timing deviation used by the low power consumption operation setting unit 38 is the smallest value when there are multiple detection timing deviations determined by the determination processing unit 37 for each of the other lighting devices 1, but it may also be the average or median of the top p smallest values ​​(p is an integer of 2 or more), or a value that has been subjected to other processing.

[0128] Next, processing by the processing unit 14 of the lighting device 1 according to the embodiment will be described with reference to Fig. 6. Fig. 6 is a flowchart showing an example of processing by the processing unit 14 of the lighting device 1 according to the embodiment. As shown in Fig. 6, the processing unit 14 of the lighting device 1 determines whether the operation mode of the detection unit 15 is the low power consumption mode (step S10).

[0129] When the processing unit 14 determines that the operation mode of the detection unit 15 is the low power consumption mode (step S10: Yes), the processing unit 14 performs low power consumption mode processing (step S11). The low power consumption mode processing of step S11 is the processing of steps S30 to S33 shown in FIG. 7, and will be described in detail later.

[0130] When the processing of step S11 is completed, or when it is determined that the operation mode of the detection unit 15 is not the low power consumption mode (step S10: No), the processing unit 14 determines whether the operation mode of the detection unit 15 is the normal mode (step S12).

[0131] When the processing unit 14 determines that the operation mode of the detection unit 15 is the normal mode (step S12: Yes), the processing unit 14 performs normal mode processing (step S13). The normal mode processing of step S13 is the processing of steps S40 and S41 shown in FIG. 8, and will be described in detail later.

[0132] When the processing of step S13 is completed or when it is determined that the operation mode of the detection unit 15 is not the normal mode (step S12: No), the processing unit 14 determines whether or not it is time to transmit its own device identification information (step S14). The timing to transmit its own device identification information is, for example, the timing when the detection unit 15 detects a detection target, the timing when the illumination control unit 30 turns on the illumination unit 11, or the timing when the illumination control unit 30 turns off the illumination unit 11, but is not limited to these examples.

[0133] When the processing unit 14 determines that it is time to transmit its own device identification information (step S14: Yes), the processing unit 14 performs an identification information transmission process (step S15). The identification information transmission process is performed, for example, by broadcasting the identification information of the lighting device 1 including the processing unit 14, but is not limited to this example.

[0134] When the processing of step S15 is completed or when it is determined that the timing for transmitting the device identification information has not come (step S14: No), the processing unit 14 determines whether or not the other device identification information has been acquired (step S16). When it is determined that the other device identification information has been acquired (step S16: Yes), the processing unit 14 performs other device identification information processing (step S17). The other device identification information processing of step S17 is the processing of steps S50 and S51 shown in FIG. 9, and will be described in detail later.

[0135] When the processing of step S17 is completed or when it is determined that the other device identification information has not been acquired (step S16: No), the processing unit 14 determines whether or not an operation determination timing, which is a timing for determining whether to operate in the low power consumption mode, has arrived (step S18). The operation determination timing is, for example, the timing when the processing unit 14 determines the detection frequency or the timing when the processing unit 14 determines the difference in detection timing with another lighting device 1, but is not limited to such examples.

[0136] When the processing unit 14 determines that the operation decision timing has arrived (step S18: Yes), it determines an operation in the low power consumption mode from among a plurality of operation candidates (step S19). When the processing of step S19 has ended or when it determines that the operation decision timing has not arrived (step S18: No), the processing unit 14 determines whether the operation end timing has arrived (step S20). The processing unit 14 determines that the operation end timing has arrived, for example, when the power supply to the lighting device 1 is turned off.

[0137] If the processing unit 14 determines that the operation end time has not yet arrived (step S20: No), it proceeds to step S20, and if it determines that the operation end time has arrived (step S20: Yes), it terminates the processing shown in Figure 6.

[0138] 7 is a flowchart showing an example of low power consumption processing by the processing unit 14 of the lighting device 1 according to the embodiment. As shown in FIG. 7, the processing unit 14 determines whether or not a detection target has been detected (step S30). The detection target may be, for example, the presence of a person, the movement of a person, or a change in brightness, but is not limited to these examples.

[0139] If the processing unit 14 determines that the detection target has not been detected (step S30: No), it determines whether or not a switching signal has been received (step S31). If the processing unit 14 determines that the detection target has been detected (step S30: Yes) or that a switching signal has been received (step S31: Yes), it turns on the illumination unit 11 (step S32) and transitions the detection process to normal mode (step S33).

[0140] When the processing of step S33 is completed, or when it is determined that a switching signal has not been received (step S31: No), the processing unit 14 ends the processing shown in FIG.

[0141] Fig. 8 is a flowchart showing an example of normal mode processing by the processing unit 14 of the lighting device 1 according to this embodiment. As shown in Fig. 8, the processing unit 14 determines whether a mode transition condition is met (step S40). The mode transition condition may be, for example, a condition that an undetected state in which the detection unit 15 does not detect the presence or movement of a person continues for a predetermined period of time, or a condition that it is a specific time period (for example, nighttime) or a specific day (for example, a holiday), but is not limited to these examples.

[0142] When the processing unit 14 determines that the mode transition condition is satisfied (step S40: Yes), it turns off the illumination unit 11 (step S41) and transitions the detection process to the low power consumption mode (step S42). When the processing unit 14 completes the process of step S42 or when it determines that the mode transition condition is not satisfied (step S40: No), it ends the process of FIG.

[0143] 9 is a flowchart showing an example of other device identification information processing by the processing unit 14 of the lighting device 1 according to the embodiment. As shown in FIG. 9, the processing unit 14 determines whether a predetermined condition is satisfied (step S50). The predetermined condition is, for example, one or more of the first condition, the second condition, and the third condition described above.

[0144] If the processing unit 14 determines that the predetermined condition is satisfied (step S50: Yes), it stores the other device identification information determined to have been acquired in step S16 in the storage unit 13 (step S51). If the processing unit 14 completes the process of step S51 or determines that the predetermined condition is not satisfied (step S50: No), it ends the process shown in FIG.

[0145] In the above example, the lighting device 1 includes the detection unit 15, but the present invention is not limited to this example. Fig. 10 is a diagram showing an example of the configuration of a lighting system 100A according to an embodiment. As shown in Fig. 2, the lighting system 100A includes a plurality of lighting devices 1A, a plurality of detection devices 2, a lighting control panel 3, a relay device 4, and cloud servers 5A and 5B.

[0146] Lighting device 1A differs from lighting device 1 in that it does not have a detection unit 15, but supplies power to detection device 2 and communicates with detection device 2 wirelessly or via a wire. Detection device 2 is an example of a detection unit and includes the same functions as detection unit 15. Lighting device 1A and detection device 2 can achieve the same functions as lighting device 1. Lighting device 1A is an example of a device that includes a lighting unit 11, and lighting device 1A or detection device 2 is an example of a device corresponding to a detection unit.

[0147] The detection device 2 has a configuration that replaces the lighting device 1 and includes some or all of the mode switching unit 32, information storage unit 33, transmission processing unit 34, reception processing unit 35, storage processing unit 36, determination processing unit 37, and low power consumption operation setting unit 38, but is not limited to this example. The detection device 2 also has a storage unit that stores some or all of its own device identification information, other device identification information, and detection history, but is not limited to this example. The own device identification information and other device identification information are, for example, the identification information of the lighting device 1A or the identification information of the detection device 2, respectively.

[0148] Furthermore, the relay device 4 may be configured to have some or all of the mode switching unit 32, information storage unit 33, transmission processing unit 34, reception processing unit 35, storage processing unit 36, determination processing unit 37, and low power consumption operation setting unit 38 in place of the lighting device 1. Furthermore, the relay device 4 may be configured to have a storage unit that stores some or all of its own device identification information, other device identification information, and detection history.

[0149] Furthermore, cloud server 5 may be configured to have some or all of mode switching unit 32, information storage unit 33, transmission processing unit 34, reception processing unit 35, storage processing unit 36, determination processing unit 37, and low power consumption operation setting unit 38 in place of lighting device 1. Furthermore, cloud server 5 may be configured to have a storage unit that stores some or all of its own device identification information, other device identification information, and detection history.

[0150] Furthermore, among the processes described in the above embodiments, all or part of the processes described as being performed automatically can be performed manually, or all or part of the processes described as being performed manually can be performed automatically using known methods. In addition, the information including the processing procedures, specific names, various data, and parameters shown in the above documents and drawings can be changed as desired unless otherwise specified. For example, the various information shown in each drawing is not limited to the information shown in the drawings.

[0151] Although an embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. This embodiment and its modifications are included within the scope and spirit of the invention, as well as the invention described in the claims and their equivalents. [Explanation of symbols]

[0152] 1,1a,1A,1b,1c,1d,1e,1f Lighting device 2. Detection device 3 Lighting control panel 4. Relay Device 5, 5A, 5B Cloud Server 10. Communications Department 11 Lighting Department 12 sensors 13 Storage section 14 Processing section 15. Detection unit 30 Lighting control unit 31 Detection processing unit 32 Mode switching section 33 Information Holding Department 34 Transmission processing unit 35 Receiving processing section 36 Retention processing section 37 Judgment processing unit 38 Low power consumption operation setting block 40 Switching signal transmitter 41 Specific signal transmitter 42 Self-device identification information transmission unit 43 Detection result transmission unit 50 Switching signal receiver 51 Other device identification information receiving unit 52 Detection signal receiving unit 100,100A lighting system

Claims

1. a lighting unit for providing lighting; a detection unit that operates using power supplied to the device including the lighting unit and detects at least one of the presence of a person and the movement of a person as a detection target; a mode switching unit that switches, as an operation mode of the detection unit, between a low power consumption mode in which an operation to suppress power consumption of the detection unit is set from a plurality of operation candidates and a normal mode in which the suppression of power consumption of the detection unit is not performed; an information storage unit that stores other device identification information that is identification information of devices corresponding to other detection units located around the illumination unit; a switching signal transmitting unit that transmits, when the detection target is detected by the detection unit, a switching signal that switches the operation mode of the other detection unit from the low power consumption mode to the normal mode based on the identification information stored in the information storing unit; A lighting system comprising:

2. a switching signal receiving unit that receives a switching signal for switching the operation mode from the low power consumption mode to the normal mode; Equipped with The mode switching unit When the switching signal receiving unit receives the switching signal, the operation mode of the detection unit is switched from the low power consumption mode to the normal mode.

10. The lighting system of claim 1.

3. a specific signal transmitting unit that repeatedly transmits a specific signal at a predetermined timing when the operation mode of the detection unit is the low power consumption mode and the operation of the low power consumption mode is a stop of the operation of the detection unit; 2. The lighting system according to claim 1.

4. The detection unit Detects the surrounding brightness, The mode switching unit Based on the result of the detection of the brightness by the detection unit, the operation mode of the detection unit is switched from the low power consumption mode to the normal mode.

4. The lighting system according to claim 1.

5. an other device identification information receiving unit that receives a signal including the other device identification information transmitted from a device corresponding to the other detection unit; a storage processing unit that, when lighting of another illumination unit in a device that supplies power to the other detection unit is detected by the detection unit during a predetermined period and a signal containing identification information of a device corresponding to the other detection unit is received by the other device identification information receiving unit, causes the identification information received by the other device identification information receiving unit to be stored in the information storage unit as the other device identification information; 4. The lighting system according to claim 1, comprising:

6. a storage processing unit that stores information corresponding to the brightness change pattern detected by the detection unit as the other device identification information in the information storage unit; 4. The lighting system according to claim 1, comprising:

7. a storage processing unit that stores, in the information storage unit, as the other device identification information, identification information of a device corresponding to another detection unit whose difference in detection timing of the detection target with respect to the detection unit is equal to or less than a threshold; 4. The lighting system according to claim 1, comprising:

8. a determination processing unit that determines the frequency with which the detection target is detected by the detection unit; a low power consumption operation setting unit that sets an operation candidate corresponding to the frequency determined by the determination processing unit among the plurality of operation candidates as an operation in a low power consumption mode; 4. The lighting system according to claim 1, comprising:

9. a determination processing unit that determines a difference in detection timing of the detection target between the detection unit and another detection unit; a low power consumption operation setting unit that selects a candidate operation according to the difference in detection timing between the detection unit and another detection unit from the plurality of candidate operations, and sets the selected candidate operation as an operation in a low power consumption mode; 4. The lighting system according to claim 1, comprising:

10. 1. A computer-implemented mode control method comprising: a mode switching step of switching, as an operation mode of a detection unit that operates using power supplied to a device including an illumination unit that provides illumination and detects at least one of the presence and movement of a person as a detection target, between a low power consumption mode in which an operation to suppress power consumption of the detection unit is set from a plurality of operation candidates, and a normal mode in which the suppression of power consumption of the detection unit is not performed; an information storage step of storing other device identification information, which is identification information of devices corresponding to other detection units located around the illumination unit; a switching signal transmitting step of transmitting, when the detection target is detected by the detection unit, a switching signal for switching the operation mode of another detection unit to which power is supplied from another illumination unit from the low power consumption mode to the normal mode based on the identification information stored in the information storing step; A mode control method including:

11. a mode switching procedure for switching, as an operation mode of a detection unit that operates using power from an illumination unit that provides illumination and detects at least one of the presence and movement of a person as a detection target, between a low power consumption mode in which an operation to suppress power consumption of the detection unit is set from a plurality of operation candidates, and a normal mode in which the suppression of power consumption of the detection unit is not performed; an information storage step of storing other device identification information, which is identification information of devices corresponding to other detection units located around the illumination unit; a switching signal transmission step of transmitting, when the detection target is detected by the detection unit, a switching signal for switching the operation mode of another detection unit to which power is supplied from another illumination unit from the low power consumption mode to the normal mode based on the identification information stored in the information storage step; A mode control program that causes a computer to execute the above.

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