Lighting system, method for controlling lighting device, and lighting control device

Abstract

To control a lighting device in accordance with a situation by improving detection accuracy of a position of a person.SOLUTION: Lighting system 10 includes lighting device 1 that adjusts an irradiation state including at least one of an irradiation direction or a focal length and irradiates an irradiation region, control device 500 that controls the irradiation state of the lighting device, and sensor 102 that detects the presence or absence of a person in each of a plurality of detection regions. Irradiation state data specifying the irradiation state corresponding to the position detection model is specified, and the irradiation state to the irradiation area is controlled based on the irradiation state data.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] BACKGROUND ART Generally, there is known a technique for detecting the presence or absence of a person in an illumination space and controlling the irradiation direction, light amount, etc. of an illumination device (see, for example, Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-61080 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-28015 [Patent Document 3] Japanese Patent Publication No. 2021-184346 Summary of the Invention [Problem to be solved by the invention]

[0004] Meanwhile, in technology that detects the presence or absence of people in an illuminated space and controls the illumination direction, light intensity, etc. of a lighting device, there has been a demand for control that is more tailored to the situation by improving the accuracy of detecting people's positions.

[0005] The present invention addresses the above-mentioned problem as an example, and aims to provide a technology for controlling lighting devices in a manner more suited to the situation by improving the accuracy of detecting the position of a person. [Means for solving the problem]

[0006] In order to achieve the above object, the lighting system of the present invention includes a lighting device that adjusts an illumination state including at least one of an illumination direction and a focal length and illuminates an illumination area, a control device that controls the illumination state of the lighting device, and a sensor that detects the presence or absence of a person in each of a plurality of detection areas, wherein the control device identifies illumination state data that identifies the illumination state according to the position detection model based on the detection result of the sensor and a position detection model that has been trained in advance to identify a person-present area among the plurality of detection areas, and controls the illumination state of the illumination area based on the illumination state data. [Effects of the Invention]

[0007] According to the lighting system of the present invention, the accuracy of detecting the position of a person is improved, thereby enabling lighting devices to be controlled in a manner more suited to the situation. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a functional block diagram illustrating a schematic configuration of a lighting system according to an embodiment of the present invention. [Figure 2] 1 is a perspective view showing an illumination device included in an illumination system according to an embodiment. [Figure 3] 1 is a schematic diagram showing an example of an illumination space in which an illumination system according to an embodiment is installed; [Figure 4] 1 is a schematic diagram showing an example of an illumination state realized by a position detection model and illumination state data in an illumination space in which a lighting system according to an embodiment is installed; FIG. [Figure 5] FIG. 10 is a schematic diagram illustrating an example of a process for generating a position detection model by the control device according to the embodiment. [Figure 6] FIG. 10 is a schematic diagram illustrating another example of the process of generating a position detection model by the control device according to the embodiment. [Figure 7] FIG. 10 is a schematic diagram illustrating an example of weighting processing for a position detection model performed by a control device according to an embodiment. [Figure 8]4 is a flowchart illustrating an example of a lighting control method executed by the control device according to the embodiment. [Figure 9] 10 is a flowchart illustrating an example of a process for generating a position detection model executed by a control device according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] 1. Overview of the embodiment First, a typical embodiment of the invention disclosed in this application will be outlined. In the following description, as an example, reference numerals in the drawings corresponding to the components of the invention will be written in parentheses.

[0010] [1] A lighting system (10) comprising: a lighting device (1) that adjusts an illumination state including at least one of an illumination direction or a focal length and illuminates an illumination area; a control device (500) that controls the illumination state of the lighting device; and a sensor (102) that detects the presence or absence of a person in each of a plurality of detection areas, wherein the control device identifies illumination state data that specifies the illumination state according to the position detection model based on the detection results of the sensor and a position detection model that has been trained in advance to identify a person-present area among the plurality of detection areas, and controls the illumination state of the illumination area based on the illumination state data.

[0011] [2] The lighting system according to [1], wherein the occupied area includes an area different from the illumination area.

[0012] [3] The lighting system described in [1] or [2], wherein the sensor detects the presence or absence of a person in each of the plurality of detection areas by temperature changes, the populated area includes a plurality of the detection areas, and the control device calculates information representing the weight of the temperature change for each of the plurality of detection areas included in the populated area, and generates the position detection model by associating the plurality of detection areas included in the populated area with the information representing the weight of the temperature change.

[0013] [4] The lighting system described in [1] to [3], wherein the control device calculates an average value of the temperature change for each of the plurality of detection areas included in the person area, and information representing the weight of the temperature change is calculated based on the average value.

[0014] [5] The lighting system according to any one of [1] to [4], wherein the illumination state includes any one of a light distribution angle, brightness, and light color.

[0015] [6] A method for controlling an illumination state of an illumination device (1) that illuminates an illumination area by adjusting an illumination state including at least one of an illumination direction or a focal length, in which a control device (500) specifies illumination state data that specifies the illumination state according to the position detection model based on a detection result of the presence or absence of a person in each of a plurality of detection areas of a sensor and a position detection model that has been trained in advance to identify a human presence area among the plurality of detection areas, and controls the illumination state of the illumination area based on the illumination state data.

[0016] [7] A control device (500) that controls a lighting device (1) that adjusts an illumination state including at least one of an illumination direction or a focal length to illuminate an illumination area, wherein the control device identifies illumination state data that identifies the illumination state according to the position detection model based on a detection result of the presence or absence of a person in each of a plurality of detection areas of a sensor and a position detection model that has been trained in advance to identify a human presence area among the plurality of detection areas, and controls the illumination state of the illumination area based on the illumination state data.

[0017] 2. Specific examples of embodiments DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A lighting system, a method for controlling a lighting device, and a lighting control device according to embodiments of the present invention will be described below with reference to the accompanying drawings.

[0018] Fig. 1 is a functional block diagram schematically showing the configuration of a lighting system 10 according to an embodiment of the present invention. Fig. 2 is a perspective view showing a lighting device 1 provided in the lighting system 10. Fig. 3 is a schematic diagram showing an example of an illumination space 200 in which the lighting system 10 is installed. Fig. 4 is a schematic diagram showing an example of illumination states I1 and I2 realized by position detection models A1 and A2 and illumination state data in the illumination space 200 in which the lighting system is installed.

[0019] As shown in FIG. 1, a lighting system 10 includes a lighting device 1, a lighting control device (hereinafter referred to as a "control device 500"), and a sensor device 100. The lighting system 10 is installed in an illumination space 200 such as a store or an exhibition hall as shown in FIGS. 3 and 4. In the lighting system 10, the control device 500 controls the illumination state of the lighting device 1, which irradiates illumination objects O1 and O2, such as exhibits and furniture, in the illumination space 200, such as the illumination angle, focal length, luminous intensity distribution angle, light color (including color temperature), and brightness of the lighting device 1, based on information acquired from the sensor device 100 and information generated in advance. The terminal 300 is a device equipped with an MCU and a communication function, such as a smartphone, a tablet terminal, or a PC (Personal Computer). The terminal 300 is capable of communicating with the control device 500 and the lighting device 1 via the communication function. The terminal 300 is also capable of communicating with the sensor device 100 via the communication function. The terminal 300 may be an electronic device having a communication function in which predetermined button operations are associated with output signals, such as a remote control device.

[0020] 1 and 2, the lighting device 1 includes a main body 2 and a control circuit 5. The main body 2 includes a housing 21, a lens 22, a base 23, and an arm 24.

[0021] Housing 21 houses components of lighting device 1, including a light source configured, for example, by an LED (Light Emitting Device), a reflector, and the like (not shown), and holds lens 22 in its opening. The light source can control at least one of light color (including color temperature) and brightness by, for example, controlling the lighting state of the LED. Housing 21 houses focus motor Mf. Focus motor Mf moves the position of lens 22, making it possible to adjust at least one of the focal distance from main body 2 and the light distribution angle (arrow F).

[0022] The base unit 23 is connected to, for example, the ceiling or wall of the lighting space 200. The base unit 23 holds an arm 24 fixed to its underside. A pan motor Mp and a control circuit 5 are housed in the base unit 23. The base unit 23 is configured to be rotatable left and right by the pan motor Mp. By rotating the pan motor Mp, the irradiation angle L of the light from the main body unit 2 can be panned left and right (arrow P).

[0023] Arm 24 holds housing 21 on base portion 23. Arm 24 is provided with a tilt motor Mt that enables housing 21 attached to arm 24 to rotate up and down. By rotating tilt motor Mt, the irradiation angle L of light from housing 21 can be tilted up and down (arrow T).

[0024] The control circuit 5 is realized by a computer such as a microcomputer that is realized by a processor such as an MCU (Micro Control Unit) (not shown) and an arithmetic memory such as RAM (Random Access Memory). The MCU is an arithmetic device that executes arithmetic processing of programs to realize various functions of the control circuit 5 described below. The memory is a volatile memory that stores programs to be processed by the MCU. The control circuit 5 stores function programs stored in a storage unit (not shown) in the memory. The function programs stored in the storage unit are programs for realizing various functions of the control circuit 5 in this embodiment. Of the function programs, programs corresponding to the functions to be realized are sequentially stored in the memory and executed sequentially by the MCU. The programs are composed of functions, fixed values, etc. corresponding to the functions. When a program is executed, not only functions but also data, which are fixed values, are required.

[0025] The control circuit 5 realizes the following communication function, motor control function, and light source control function using the hardware configuration and programs described above. As the communication function, the control circuit 5 realizes a function of receiving control information for the lighting device 1 transmitted from the control device 500. As the motor control function, the control circuit 5 variably controls the rotation amount and rotation direction of the pan motor Mp, tilt motor Mt, and focus motor Mf described above in accordance with the control information for the lighting device 1 received from the control device 500, thereby controlling the focal length, irradiation direction, and light distribution angle of the lighting device 1. Furthermore, the control circuit 5 controls the lighting state of the light source (LED) described above in accordance with the control information for the lighting device 1 received from the control device 500, thereby controlling at least one of the light color (including color temperature) and brightness.

[0026] As shown in Fig. 1, the sensor device 100 has a communication unit 101 and a sensor 102. The communication unit 101 transmits information detected by the sensor 102 to the control device 500, for example, by wireless communication. The sensor 102 is, for example, an infrared sensor composed of multiple MEMS (Micro Electro Mechanical Systems) elements that detect temperature changes in a detection area D (see Fig. 3). The sensor 102 can detect the presence or absence of a person in each of the multiple detection areas by detecting heat (infrared rays) emitted by people, objects, etc., for each of the multiple detection areas.

[0027] The control device 500 is an example of a computer such as a microcomputer implemented by a processor such as an MCU (Micro Control Unit), an arithmetic memory such as RAM (Random Access Memory), and a storage unit that stores programs and processing data (not shown). The MCU is an arithmetic unit that executes program arithmetic processing to implement various functions of the control device 500 (described below). The memory is a volatile memory that stores programs to be processed by the MCU. The control device 500 stores function programs stored in a storage unit (not shown) in the memory. The function programs stored in the storage unit are programs for implementing various functions of the control device 500 in this embodiment. The memory sequentially stores programs corresponding to the functions to be implemented among the function programs, and the programs are sequentially executed by the MCU. The programs are configured by functions, fixed values, and the like corresponding to the functions. When a program is executed, not only functions but also data, which are fixed values, are required.

[0028] The storage unit is realized by a non-volatile memory such as an EEPROM (Electrically Erasable Programmable Read-Only Memory). The storage unit stores function programs for realizing various functions. The storage unit also stores various processing data used by the control device 500, such as a position detection model and irradiation state data (described later), and control information for the lighting device 1.

[0029] The control device 500 is configured with the above-described hardware configuration and programs to form functional blocks such as a communication unit 501, a control unit 502, an operation and display unit 503, and the like.

[0030] The communication unit 501 can communicate with external devices, i.e., the lighting device 1 and the sensor device 100, by wireless or wired communication using the above-described configuration of the control device 500 and a communication interface (not shown). The communication unit 501 can also communicate with a terminal 300 such as a smartphone.

[0031] The operation and display unit 503 is an input interface that allows the user to operate the lighting device 1 via the control device 500, and an output interface that allows the user to perceive the control state of the control device 500 and the lighting device 1.

[0032] Examples of the hardware configuration realizing the operation unit in the operation and display unit 503 include various touch panels, keyboards, numeric keys, buttons, etc. For example, a user can operate the operation and display unit 503 to set the control state of the lighting device 1 via the control device 500. Note that the hardware configuration realizing the operation unit is not limited to the above-mentioned example, and may have a function to accept inputs by the user to operate the control device 500. The operation unit may, for example, accept operations by commands from various communication interfaces via the communication unit 501, or may accept operations by voice command input.

[0033] The hardware configuration realizing the display unit in the operation / display unit 503 is a functional unit that allows the user to perceive the control status of the control device 500 and the lighting device 1, such as a display device equipped with an LCD (Liquid Crystal Display) or organic EL.

[0034] It should be noted that, for example, when the operation / display unit 503 is a touch panel, the function as an operation unit and the function as a display unit are realized in one unit. It should be noted that the operation / display unit 503 may not have part of the function as an operation unit or a display unit. Furthermore, the control device 500 is not limited to one having the operation / display unit 503 in the control device 500, and the control device 500 may not have the operation / display unit 503, and for example, the terminal 300 may realize the function of the above-mentioned operation / display unit 503.

[0035] The control unit 502, in cooperation with the MCU and the memory, executes a program stored in the storage unit, thereby realizing a method for controlling the lighting device 1 by the control device 500, which performs the processes described below.

[0036] As shown in FIG. 3, in the lighting system 10, for each of the regions (detection regions D) of a predetermined size (area) into which the lighting space 200 is divided according to the detection unit by the sensor 102, a position detection model A is pre-trained as a model that identifies the region (manned region) among the multiple detection regions D where a person is present based on the detection results of the sensor 102.

[0037] In FIG. 4, the position detection model A1 and the position detection model A2 identify human regions M1 and M2 in which a person P1 and a person P2 who are present at different positions in the illumination space 200 exist.

[0038] 4, the control unit 502 of the control device 500 controls the illumination states I1 and I2 of illumination targets O1 and O2 in the illumination area based on illumination state data that specifies the illumination state of the illumination device 1 according to the position detection models A1 and A2. The illumination area to which the illumination state of the illumination device 1 controlled by the control unit 502 is provided is, for example, an area different from the manned area in the illumination space 200 where people P1 and P2 are present.

[0039] In Fig. 4, illumination state I1 is, for example, an illumination state in which the illumination device 1 illuminates an illumination object O1. Furthermore, illumination state I2 is, for example, an illumination state in which the illumination device 1 illuminates an illumination object O2. In Fig. 4, illumination states I1 and I2 show an example in which the illumination angle and the like are mainly controlled, but the illumination states controlled by illumination state data are not limited to those described above. Furthermore, the illumination area of ​​the illumination device 1 controlled by the control unit 502 may be an area including human areas M1 and M2 in the illumination space 200 where people P1 and P2 are present.

[0040] Fig. 5 is a schematic diagram showing an example of the process of generating the position detection model A11 by the control device 500. Fig. 6 is a schematic diagram showing another example of the process of generating the position detection model A12 by the control device 500.

[0041] The training data 200L_11 to 200L_14 shown in Fig. 5 and the training data 200L_21 to 24 shown in Fig. 6 are data indicating temperature changes that occur when people are present at different positions in the lighting space 200. The position detection data 200M1 shown in Fig. 5 and the position detection data 200M2 shown in Fig. 6 are data indicating that the position detection models A11 and A12 in the lighting space 200 are identified based on the training data 200L_11 to 200L_14 and the training data 200L_21 to 24.

[0042] The training data 200L_11-14 are data obtained by measuring, multiple times, temperature changes that occur when a person is present in the same position in the lighting space 200. Similarly, the training data 200L_21-24 are data obtained by measuring, multiple times, temperature changes that occur when a person is present in the same position in the lighting space 200. In the human presence areas M11-M14 and M21-M24 of the training data 200L_11-14 and 200L_21-24, temperature changes occur compared to the other detection areas D due to the presence of people within the ranges of the multiple detection areas D in the lighting space 200 shown in FIG. 3. In other words, the human presence areas M11-M14 and M21-M24 of the training data 200L_11-14 and 200L_21-24 indicate the presence or absence of a person and the position of the person in the lighting space 200 based on the temperature change in the detection area D detected by the sensor 102. Δt indicates the level (Hi-Lo) of the temperature change. The following mainly describes the process of generating the position detection model A11 shown in FIG.

[0043] In the training data 200L_11 to 200L_14, people are present at the same positions in the lighting space 200, but parts of the detection areas D included in the respective manned areas M11 to M14 are different. Furthermore, in the training data 200L_11 to 200L_14, the values ​​of the temperature changes occurring in the detection areas D included in the respective manned areas M11 to M14 are also different.

[0044] In the control device 500, the control unit 502 calculates information representing the weight of the temperature change for each of the detection areas D included in the manned areas M11 to M14 in the learning data 200L_11 to 200L_14.

[0045] FIG. 7 is a schematic diagram showing an example of weighting processing of the position detection model performed by the control device 500. In FIG.

[0046] 7, the information representing the weight of the temperature change can be obtained by, for example, the control unit 502 calculating the average value of the temperature change Δt for each of the individual detection regions D included in the manned regions M31-M34 in the learning data 200L_31-34, and generating the position detection data 200M3 in which the detection region DH with the highest average value is identified. The detection region DH with the highest average value in the position detection data 200M3 corresponds to the position detection models A11 and A12 in the position detection data 200M1 and 200M2. In other words, the control unit 502 can calculate the average value of the temperature change Δt for each of the individual detection regions D included in the learning data 200L_31-34, and use the detection region DH with the highest average value as the position detection model.

[0047] 5, in the control device 500, the control unit 502 generates a position detection model A11 by associating multiple detection areas D included in the manned areas M11 to M14 with information representing the weight of temperature change. The position detection model A11 is generated so as to include, for example, detection areas D within a predetermined range including the detection area DH with the highest average value.

[0048] Similar to the process of generating the position detection model A11 described above, the control unit 502 can also generate the position detection model A12 based on the manned regions M21 to M24 of the learning data 200L_21 to 24 shown in Fig. 6. The number of position detection models can be set arbitrarily depending on the number of associated irradiation state data.

[0049] The control unit 502 performs a process of associating the generated position detection models A11 and A12 with illumination state data that specifies the illumination state of the lighting device 1. The illumination state data is stored in the storage unit of the control unit 502, for example, when the user inputs information specifying the illumination state from the operation / display unit 503. Any number of pieces of illumination state data can be stored depending on the number of position detection models A11 and A12. The control unit 502 associates the illumination state data with the position detection models A11 and A12, for example, like a data table, and stores them in the storage unit. Also, any number of pieces of illumination state data can be stored depending on the time period. The control unit 502 associates the illumination state data with the position detection models A11 and A12, and the time period in which the illumination state data is executed, for example, like a data table, and stores them in the storage unit.

[0050] The control unit 502 controls the illumination states I1 and I2 of the illumination area based on the illumination state data associated with the position detection models A11 and A12, as shown in Fig. 4. The control unit 502 may also control the illumination states I1 and I2 of the illumination area by changing the association between the position detection models A11 and A12 and the illumination state data depending on the time of day.

[0051] FIG. 8 is a flowchart showing an example of a lighting control method executed by the control device 500.

[0052] 8, when the control device 500 and the lighting device 1 are powered on in the lighting system 10, the control unit 502 of the control device 500 determines whether or not a temperature change detection result has been output from the sensor 102 of the sensor device 100, that is, whether or not the presence of a person has been detected (step S101). If the sensor 102 does not detect a person (S101: NO), the control unit 502 repeats the process of S101.

[0053] If the sensor 102 detects a person (S101: YES), the control unit 502 identifies a position detection model that has been pre-trained to detect the human areas M1 and M2 among the multiple detection areas D where people P1 and P2 are present, based on the temperature change detection results in the multiple detection areas D of the lighting space 200 obtained from the sensor 102 (step S102).

[0054] The control unit 502 identifies the irradiation state data associated with the position detection model identified in S102 based on the information stored in the storage unit (step S103). The control unit 502 controls the irradiation state of the irradiation area based on the irradiation state data identified in S103 (step S104).

[0055] FIG. 9 is a flowchart illustrating an example of a process for generating a position detection model executed by a lighting control device according to an embodiment.

[0056] 9, in the lighting system 10, when the control device 500 and the lighting device 1 are powered on and the control unit 502 of the control device 500 starts the process of generating a position detection model, the control unit 502 acquires the detection result of a temperature change from the sensor 102 of the sensor device 100 (step S201). For example, a trigger signal is transmitted from the terminal 300 to the sensor device 100, and the process of generating a position detection model is started upon reception of the trigger signal by the sensor device 100.

[0057] The control unit 502 identifies the value of the temperature change occurring in the detection area D included in the manned areas M11 to M14 of each of the learning data 200L_11 to 200L_14 from the data acquired from the sensor 102 (step S202).

[0058] The control unit 502 determines whether or not the learning data 200L_11 to 14, in which the temperature change value is identified, has been acquired a predetermined number of times from the sensor 102 (step S203). If the predetermined number of times has not been reached (S203: NO), the control unit 502 repeats the processes of S201 and S202.

[0059] If the predetermined number of times is reached (S203: YES), the control unit 502 calculates the average value of the temperature change Δt for each individual detection area D included in each of the manned areas M31 to M34 in the learning data 200L_11 to 14, and identifies the detection area DH with the highest average value among them (step S204).

[0060] The control unit 502 generates a position detection model A11 by associating a plurality of detection areas D included in the manned areas M11 to M14 with information indicating the weight of the temperature change (step S205).

[0061] 3. Effects of the embodiment The lighting system 10 configured as described above includes a lighting device 1 that adjusts an illumination state including at least one of an illumination direction and a focal length to illuminate an illumination area, a control device 500 that controls the illumination state of the lighting device 1, and a sensor 102 that detects the presence or absence of people P1, P2 in each of a plurality of detection areas D. In the lighting system 10, the control device 500 determines illumination state data that specifies illumination states I1, I2 corresponding to the position detection models A1, A2 based on the detection result of the sensor 102 and position detection models A1, A2 that have been trained in advance to identify human presence areas M1, M2, which are areas among the plurality of detection areas D where people P1, P2 are present, and controls the illumination states I1, I2 of the illumination area based on the illumination state data.

[0062] According to the lighting system 10 configured as described above, in a technology for detecting the presence or absence of people in the lighting space and controlling the illumination direction, light intensity, etc. of the lighting device, by training the position detection models A1 and A2 in advance, even if there is a difference in the detection results of people P1 and P2 by the sensor 102, the accuracy of detecting the position of people can be improved, and control can be performed that is more suited to the situation.

[0063] Therefore, the lighting system 10 can improve the accuracy of detecting the position of a person, thereby enabling lighting devices to be controlled in a way that is more suited to the situation.

[0064] The occupied areas M1, M2 may include an area different from the illumination area. In this way, in the lighting device 1 that illuminates illumination objects O1, O2, such as exhibits or furniture in an illumination space 200 such as a store or exhibition hall, the illumination conditions, such as the illumination angle, focal length, luminous intensity distribution angle, light color (including color temperature), and brightness, on the illumination objects O1, O2 can be changed depending on the positions of the people P1, P2 who are viewing the illumination objects O1, O2. In other words, with the lighting system 10, it is possible to expect an eye-catching effect and a light dramatic effect on the illumination objects depending on the presence or absence and positions of the people P1, P2.

[0065] In the lighting system 10, the sensor 102 detects the presence or absence of people P1, P2 in each of the multiple detection areas D, for example, by temperature changes. The populated areas M1, M2 may include multiple detection areas D, and the control device 500 may calculate information representing the weight of the temperature change for each of the multiple detection areas D included in the populated areas M1, M2, and generate a position detection model by associating the multiple detection areas included in the populated areas with the information representing the weight of the temperature change.

[0066] The control device 500 may calculate an average value of the temperature change for each of a plurality of detection areas included in the manned area, and calculate information representing the weight of the temperature change based on the average value.

[0067] According to the lighting system 10 configured as described above, in a technology for detecting the presence or absence of people in an illuminated space and controlling the illumination direction, light intensity, etc. of a lighting device, when the position detection models A1 and A2 are trained in advance, by using information on temperature changes in areas where people are present that has been acquired multiple times, even if there is a difference in the detection results of people P1 and P2 by the sensor 102, the accuracy of detecting the positions of people can be further improved, and control can be performed that is more suited to the situation.

[0068] Therefore, the lighting system 10 can improve the accuracy of detecting the position of a person, thereby enabling lighting devices to be controlled in a way that is more suited to the situation.

[0069] The illumination state may include any one of the light distribution angle, brightness, and light color.

[0070] In addition, those skilled in the art can appropriately modify the present invention in accordance with conventionally known knowledge. As long as such modifications still comprise the structure of the present invention, they are of course included in the scope of the present invention.

[0071] For example, if the sensor 102 is an infrared sensor that receives infrared rays and converts them into an electrical signal, the main types known are thermal sensors that detect electrical properties that change due to the heat of infrared rays and quantum sensors that detect electrical phenomena caused by light energy, but the operating principle is not particularly limited.

[0072] Furthermore, for example, the sensor 102 is not limited to an infrared sensor, but may be, for example, an ultrasonic sensor, a microwave sensor, an image recognition sensor, or the like.

[0073] The information representing the weight of the temperature change may be calculated based on whether the cumulative value of the temperature change of each detection area included in the human area exceeds a predetermined threshold. The information representing the weight of the temperature change may be calculated in descending order of the cumulative value. The information representing the weight of the temperature change may take into account, for example, the number of times each detection area is included in the human area.

[0074] When the control device 500 generates a position detection model by associating multiple detection areas included in a manned area with information representing the weight of temperature change, the position detection model may be generated to include, for example, detection area D where the above cumulative value exceeds a predetermined threshold, or multiple detection areas within a predetermined range centered on the detection area with the highest above cumulative value.

[0075] The lighting system 10 may not be a system that independently includes the control device 500. The control device 500 may be incorporated into the lighting device 1 or into the sensor device 100. For example, when the control device 500 is incorporated into the lighting device 1, a position detection model and irradiation state data may be stored in a storage unit of the lighting device 1, and information detected by the sensor 102 may be received via wireless communication to control the irradiation state of the irradiation area. Furthermore, when the control device 500 is incorporated into the sensor device 100, a position detection model and irradiation state data may be stored in a storage unit of the sensor device 100, and information detected by the sensor 102 may be transmitted to the lighting device 1 via wireless communication to control the irradiation state of the irradiation area. [Explanation of symbols]

[0076] 1...lighting device, 2...main body, 5...control circuit, 10...lighting system, 21...housing, 22...lens, 23...base, 24...arm, 100...sensor device, 101...communication unit, 102...sensor, 200...illumination space, 200L_11-14, 200L_21-24, 200L_31-34: learning data, 200M1, 200M2, 200M3: position detection data, 300...terminal, 500...control device, 501...communication unit, 502...control unit, 503... Operation and display unit, A, A1, A11, A12, A2... position detection model, D, DH... detection area, F... focus, I1, I2... irradiation status, L... irradiation angle, M1, M11, M12, M13, M14, M2, M21, M22, M23, M24, M31, M32, M33, M34... human presence area, Mf... focus motor, Mp... pan motor, Mt... tilt motor, O1, O2... irradiation object, P... pan, P1, P2... person, T... tilt, Δt... temperature change

Claims

1. an illumination device that adjusts an illumination state including at least one of an illumination direction and a focal length to illuminate an illumination area; a control device for controlling the illumination state of the lighting device; a sensor for detecting the presence or absence of a person in each of a plurality of detection areas; Equipped with The control device Identifying illumination state data that identifies the illumination state according to the position detection model based on the detection result of the sensor and a position detection model that has been previously trained to identify a human presence area among the plurality of detection areas, and controlling the illumination state of the illumination area based on the illumination state data; Lighting system.

2. The person area includes an area different from the irradiation area, 10. The lighting system of claim 1.

3. the sensor detects the presence or absence of a person in each of the plurality of detection areas based on a temperature change; The manned area includes a plurality of the detection areas, The control device calculating information representing a weight of the temperature change for each of the plurality of detection areas included in the human area; generating the position detection model by associating a plurality of the detection areas included in the human presence area with information representing a weight of the temperature change; 3. A lighting system according to claim 1 or 2.

4. The control device calculating an average value of the temperature change for each of the plurality of detection areas included in the human presence area; The information representing the weight of the temperature change is calculated based on the average value.

4. The lighting system of claim 3.

5. The illumination state includes any one of a light distribution angle, brightness, and light color.

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

6. A method for controlling an illumination state of an illumination device that illuminates an illumination area by adjusting an illumination state including at least one of an illumination direction and a focal length, wherein a control device The control device Identifying illumination state data that identifies the illumination state according to the position detection model based on a detection result of the presence or absence of a person in each of a plurality of detection areas of the sensor and a position detection model that has been previously trained to identify an occupied area among the plurality of detection areas where a person is present; controlling the illumination state of the illumination area based on the illumination state data; A method for controlling a lighting device.

7. a control device that controls an illumination device that adjusts an illumination state including at least one of an illumination direction and a focal length to illuminate an illumination area; The control device Identifying illumination state data that identifies the illumination state according to the position detection model based on a detection result of the presence or absence of a person in each of a plurality of detection areas of the sensor and a position detection model that has been previously trained to identify an occupied area among the plurality of detection areas where a person is present; controlling the illumination state of the illumination area based on the illumination state data; Lighting control device.

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