JP2010123534A - Illumination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To aim at saving energy while maintaining an optimal illumination environment necessary for a person's activity and work in a room equipped a task illumination fixture and a base illumination fixture. <P>SOLUTION: The illumination system is composed of a task illumination fixture 10 to secure a mainly horizontal face illuminance in a predetermined area, a base illumination fixture 20 to secure a mainly perpendicular face illuminance or a perpendicular brightness, a person detecting part 40 to detect an existence of a person and a direction of a face in the predetermined area, and a controlling part 30 to control lighting up the task illumination fixture 10 in accordance with the existence of the detected person by the person detecting part 40 and to control lighting up the base illumination fixture 20 in accordance with the direction of the face detected by the person detecting part 40. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting system that detects the presence or absence of a person in a room and the orientation of a face, and controls lighting of a task lighting fixture and a down lighting fixture based on the detection result.

  Traditionally, lighting fixtures for tasks such as ceiling lights, downlights, and spotlights for illuminating a substantially horizontal surface with a low indoor lighting area, as well as downlights, spotlights, brackets, and architecture for illuminating other areas. 2. Description of the Related Art A lighting system including a base lighting fixture such as cornice lighting in lighting is known.

  In such a lighting system, a control unit that controls lighting of a lighting fixture is provided, and the presence or absence of a person is detected by a human detection sensor installed on a ceiling or the like. One or both of the base lighting fixtures are turned off, and all the lighting fixtures are turned on when it is detected by the human detection sensor that there is a person. According to this lighting system, power consumption can be reduced as compared with the case where all of the lighting fixtures are always turned on.

  The conventional lighting system maintains an illuminance level necessary for various activities and work performed by a person indoors, not only in an area where there is a person but also in an area where there is no person. For this reason, lighting in areas where no people are present is a wasteful use of electric power.

  For these reasons, there is a demand for a lighting system capable of individually controlling lighting of the task lighting fixture and the base lighting fixture in accordance with various activities and operations performed by the person indoors as well as the presence or absence of the person. . However, in a room equipped with a plurality of task lighting devices and base lighting devices such as a living room, it has been complicated and difficult to perform such fine control. In addition, it is difficult to perform effective lighting control even when light is emitted in the direction in which the face faces or in the direction in which the line of sight is present.

  The present invention has been made in view of the above circumstances, and in a room equipped with a task lighting device and a base lighting device, while ensuring a comfortable lighting environment necessary for human activities and work, energy saving is achieved. The object is to provide a possible lighting system.

  The present invention is a lighting system that controls lighting of a plurality of lighting fixtures installed in a room, wherein one or a plurality of task lighting fixtures that illuminate a substantially horizontal plane lower than the installed position, and the task lighting fixtures illuminate. A plurality of base lighting fixtures that illuminate a region other than the above, a human detection sensor that detects the presence or absence of a person in the room, a face recognition sensor that detects the orientation of a human face in the room, the human detection sensor, and And a controller that controls lighting of the task lighting fixture and the base lighting fixture based on a detection result of the face recognition sensor.

  With this configuration, lighting of the task lighting fixture and the base lighting fixture is individually controlled according to not only the presence / absence of the person detected by the human detection sensor but also various activities and work performed by the person in the room using the face recognition sensor. Therefore, it is possible to ensure a comfortable lighting environment and to save energy.

  In the illumination system according to the present invention, when the person is not detected by the human detection sensor, the control unit turns off the task lighting device, and when the person is detected by the human detection sensor. And lighting the task lighting fixture and lighting the base lighting fixture in the direction of the face detected by the face recognition sensor.

  With this configuration, lighting of the task lighting fixture and the base lighting fixture is individually controlled according to not only the presence / absence of the person detected by the human detection sensor but also various activities and work performed by the person in the room using the face recognition sensor. Therefore, it is possible to ensure a comfortable lighting environment and to save energy.

  In the illumination system, the present invention divides the room into a plurality of areas, the human detection sensor and the face recognition sensor are installed for each area, and the control unit is configured to control the person in the area. According to the detection result of the detection sensor, lighting control of the task lighting fixture in the area is performed, and lighting control of the base lighting fixture of all the areas is controlled according to the detection result of the face recognition sensor in the area. Including things.

  With this configuration, for example, it is possible to control lighting of task lighting fixtures and base lighting fixtures for each living room and dining room, so a comfortable lighting environment according to various activities and work performed by people in each room It is possible to save energy while ensuring.

  Further, according to the present invention, in the illumination system described above, the control unit continues the same detection state after a lapse of a predetermined time after the human detection sensor and the face recognition sensor detect the direction of the person and the face, respectively. In the case where the lighting is not performed, the lighting device for changing the lighting control state of the task lighting device and the base lighting device is also included.

  With this configuration, the task lighting device and the base lighting device are kept on even if there are no people in the room until a predetermined time has elapsed since the human detection sensor and the face recognition sensor detected the human and the face. In addition, since the light can be turned off quickly after a predetermined time has elapsed, further energy saving can be achieved while ensuring a comfortable lighting environment.

  According to the present invention, it is possible to provide a lighting system capable of saving energy while ensuring a comfortable lighting environment necessary for human activities and work in a room provided with a task lighting fixture and a base lighting fixture.

  Hereinafter, an illumination system according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of an illumination system according to an embodiment of the present invention. The lighting system of the present embodiment is configured to include a task lighting fixture 10, a base lighting fixture 20, a control unit 30, and a human detection unit 40.

  The task lighting device 10 is a lighting device such as a ceiling light, a downlight, and a spotlight that is installed in order to ensure illuminance mainly in a horizontal plane in a room or a preset area. As the light source, a fluorescent lamp, an incandescent lamp, an LED lamp or the like is used.

  The task lighting device 10 is turned on when the human detection unit 40 detects that a person is present in the room.

  The base lighting fixture 20 includes a downlight, a spotlight, a bracket, and an architectural structure installed in order to ensure luminance in a vertical direction such as a illuminance of a vertical surface such as a wall or a predetermined part of a room or area, for example, a wall. Lighting equipment such as cove lighting and cornice lighting, which are lighting. As the light source, a fluorescent lamp, an incandescent lamp, an LED lamp, or the like is used.

  The base lighting device 10 is turned on according to the orientation of the face detected by the human detection unit 40 to ensure a sense of brightness in the visual field direction.

  The control unit 30 is composed of a microcomputer system, and controls lighting and extinguishing of the task lighting device 10 and the base lighting device 20 according to the presence or absence of a person detected by the human detection unit 40 and the face orientation.

  The human detection unit 40 includes a human detection sensor 41, a face recognition sensor 42, and a calculation unit 43.

  The human detection sensor 41 includes an imaging device such as an infrared sensor, a CCD camera, or a CMOS camera. The human detection sensor 41 is installed in a room or in a central upper part or a side of a preset area, such as a ceiling or a wall, so This is to detect the presence or absence of.

  Here, a method for detecting a person by the person detection sensor 41 will be described. Examples of the human detection method include a background difference method and an inter-frame difference method.

  As shown in FIG. 2, the background subtraction method extracts a difference between a reference image (background image) A prepared in advance and an evaluation image B obtained by imaging a room or an area, and binarizes it to detect a person C to be detected. Is detected.

  On the other hand, the inter-frame difference method detects a person to be detected by taking a difference between an input image at time (t) and an input image at time (t−n).

  The face recognition sensor 42 includes an imaging device such as a CCD camera, a CMOS camera, an infrared camera, and the like, is installed integrally with the human detection sensor 41, and recognizes the direction of the human face and line of sight detected by the human detection sensor 41. Is. The face recognition sensor 42 can be shared by using an imaging device for the human detection sensor 41.

  The calculation unit 43 is configured by a microcomputer system, and determines the presence / absence of a person based on the detection result of the human detection sensor 41 and also determines the orientation of the face and line of sight based on the detection result of the face recognition sensor 42.

  3 and 4 are a perspective view and a plan view, respectively, for explaining the indoor state using the lighting system according to the embodiment of the present invention, where one and a plurality of preset areas are respectively provided. is there.

  The lighting system in FIG. 3 is attached to the ceiling of the room R1 and is installed on the ceiling to detect the presence or absence of a person in the area S and the orientation of the face, and a person is detected in the area S by the person detection unit 40. If so, the ceiling lighting 11 for task lighting that illuminates the area S, and the base lighting that is installed on the wall surface and illuminates a part of the wall surface and ceiling according to the face orientation detected by the human detection unit 40 Brackets 21 and 22, spotlights 23 and 24, and cornice illumination 25 as architectural illumination.

  The lighting system in FIG. 4 is installed on the ceiling in the A area Sa, which is a living room in the room R2, and a human detection sensor (not shown) that detects the presence or absence of a person in the area Sa and a face (not shown) that detects the face orientation. A human detection unit 40a composed of a recognition sensor, a task illumination 11a which is also installed on the ceiling and is turned on or off according to the presence or absence of a person detected by the human detection unit 40a, and a person installed on each of the three walls. It has base illuminations 21a to 23a that are turned on or off according to the orientation of the face detected by the detection unit 40a.

  Moreover, in B area Sb which is the dining room of room R2, it is installed in the ceiling, and the human detection part 40b which detects the presence or absence of a person in B area Sb and the direction of the face is also installed in the ceiling, and the human detection part 40b Illumination for task 11b that is turned on or off according to the presence or absence of a person to be detected, and base illumination that is installed on each of the three wall surfaces and that is turned on or off according to the orientation of the face detected by the person detection unit 40b 21b-23b is further provided.

  Note that the task lights 11a and 11b are defined by horizontal illuminance, and the base lights 21a to 23a and 21b to 23b have vertical surface illuminance or vertical brightness.

  In addition, when the human detection units 40a and 40b are imaging devices such as a CCD camera and a CMOS camera, the task lights 11a and 11b are determined from an image obtained by capturing an action of a person in the room R1 or R2, for example, The brightness may be controlled such that the light is turned on slightly when sitting, and the light is turned on in the case of an action that requires visual recognition such as reading.

  Next, an operation of the lighting system according to the embodiment of the present invention will be described with an example. 5 to 7 are plan views of the room for explaining an operation example. Note that the configuration of the lighting system is the same as that shown in FIG.

(First operation example)
The first operation example is an operation of the lighting system when a person enters one area and then moves within the area. FIG. 5 is a plan view for explaining the operation of the illumination system in the first operation example.

  In FIG. 5A, when the person detecting unit 40a detects that the person M1 has entered the A area Sa, the control unit 30 shown in FIG. 1 turns on the task illumination 11a. Further, when the human detection unit 40a detects that the face of the person M1 faces the center of the A area Sa and the visual field E1 is in that direction, the control unit 30 turns on the base lights 21a to 23a.

  At this time, since the person detection unit 40b detects that there is no person in the B area Sb, the control unit 30 turns off the task illumination 11b. However, since it is detected by the human detection unit 40a that a part of the line of sight E1 of the person M1 reaches the B area Sb, all the base illuminations 21b to 23b are turned on.

  In FIG. 5B, when the person M1 moves within the A area Sa and stops at the center toward the direction of the base illumination 23a, the presence or absence of the person detected by the person detection unit 40a is unchanged. Therefore, the task illumination 11a by the control unit 30 remains turned on. Moreover, since the visual field E1 includes the directions of the base illuminations 21a to 23a in the orientation of the face detected by the human detection unit 40a, the base illuminations 21a to 23a remain lit.

  On the other hand, when the human detection unit 40a detects that the line of sight E1 associated with the face direction of the person M1 does not face the B area Sb at all, the control unit 30 turns off all the base lights 21b to 23b. At this time, since the person detection unit 40b does not detect a person, the task illumination 11b remains off.

(Second operation example)
The second operation example is an operation of the illumination system when a person who is stationary in one area moves in the area and turns his face to the other area. FIG. 6 is a plan view for explaining the operation of the illumination system in the second operation example.

  The state of the room R2 shown in FIG. 6 (a) is the same as that in FIG. 5 (b) shown in the first operation example, and the description is omitted.

  In FIG. 6B, when the person M1 in the A area Sa moves from the stationary state to the vicinity of the base illumination 21a and turns his face toward the B area Sb, the person M1 detected by the person detection unit 40a. Therefore, the task illumination 11a by the control unit 30 remains lit. Moreover, since the direction of the face detected by the human detection unit 40a is greatly deviated from the direction of the base illuminations 21a to 23a, the base illuminations 21a to 23a are turned on for a certain time and then turned off.

  Further, when the human detection unit 40a detects that the line of sight E1 of the person M1 in the A area Sa faces the B area Sb, the control unit 30 turns on all the base lights 21b to 23b. At this time, since the person detection unit 40b does not detect a person, the task illumination 11b remains off.

(Third operation example)
The third operation example is an operation of the lighting system when there are a plurality of people in one area and one person moves to the other area after that. FIG. 7 is a plan view for explaining the operation of the illumination system in the operation example in the third operation example.

  In FIG. 7A, when the person detection unit 40a detects that there are two people M1 and M2 in the A area Sa, the task illumination 11a is turned on by the control unit 30 shown in FIG. When the human detection unit 40a detects that the face of the person M1 faces the center of the A area Sa and the base illuminations 21a to 23a are in the visual field E1, the control unit 30 turns on all the base illuminations 21a to 23a. Let

  Further, the presence of a person in the B area Sb is not detected by the human detection unit 40b, but the face of the person M2 faces the B area Sb and the line of sight E2 faces the base illuminations 21b and 23b by the human detection unit 40a. Is detected.

  As a result, the control unit 30 shown in FIG. 1 controls the task illumination 21b in the B area Sb to be turned off and the base illuminations 21b and 23b to be turned on.

  Next, in FIG. 7B, when the person M2 moves to the B area Sb and stands still with the face facing the A area Sa, the detection unit 40b detects the presence of the person M2 in the B area Sb and the face orientation. It is detected that it is not facing the base illumination 23b.

  Thereby, the control unit 30 turns on the task illumination 21b in the B area Sb, turns on the base illuminations 21b and 22b, and turns off the base illumination 23b.

  As described above, according to the lighting system according to the embodiment of the present invention, the human detection sensor for detecting presence / absence of a person in the room including the task lighting fixture and the base lighting fixture, When a person is detected by the human detection sensor, a face recognition sensor for detecting the direction and a control unit that controls lighting of the task lighting device and the base lighting device according to the detection result of the human detection sensor and the face recognition sensor are provided. The task lighting device is turned on, and the base lighting device in the direction of the face detected by the face recognition sensor is turned on.

  As a result, it is possible to individually control lighting of the task lighting fixture and the base lighting fixture according to various activities and work performed by a person indoors, and it is possible to save energy while ensuring a comfortable lighting environment. Become.

The figure which shows schematic structure of the illumination system which concerns on embodiment of this invention. Explanatory drawing which shows the method of detecting the presence or absence of the person of the lighting system which concerns on embodiment of this invention. The perspective view for demonstrating the indoor state using the lighting system which concerns on embodiment of this invention The top view for demonstrating the state of the room using the lighting system which concerns on embodiment of this invention It is a top view for demonstrating operation | movement of the illumination system in the 1st operation example of the illumination system which concerns on embodiment of this invention of this invention, (a) is one person when one person exists in one area, (b ) Is when the person moves and stops. It is a top view for demonstrating operation | movement of the illumination system in the 2nd operation example of the illumination system which concerns on embodiment of this invention of this invention, (a) is the case where one person is still in one area , (B) shows a case where the person has moved. It is a top view for demonstrating operation | movement of the illumination system in the 2nd operation example of the illumination system which concerns on embodiment of this invention of this invention, (a) is a case where several people are in one area, ( b) is a case where one of them has moved to another area.

Explanation of symbols

10, 11, 11a, 11b Task lighting fixture 20, 21-25, 21a-23a, 21b-23b Base lighting fixture 30 Control unit 40, 40a, 40b Human detection unit 41 Human detection sensor 42 Face recognition sensor R1, R2 Indoor S, Sa, Sb area

Claims (4)

A lighting system that controls lighting of a plurality of lighting fixtures installed in a room,
One or more task lighting fixtures that illuminate a substantially horizontal plane lower than the installed location;
A plurality of base lighting fixtures that illuminate areas other than the task lighting fixture illuminating;
A human detection sensor for detecting the presence or absence of a person in the room;
A face recognition sensor for detecting the orientation of a human face in the room;
Based on detection results of the human detection sensor and the face recognition sensor, a control unit that controls lighting of the task lighting device and the base lighting device;
Comprising
Lighting system. The lighting system according to claim 1,
The controller is
When no person is detected by the human detection sensor, turn off the task lighting fixture,
When a person is detected by the human detection sensor, the lighting device for the task is turned on, and the lighting device for the base in the direction of the face detected by the face recognition sensor is turned on,
Lighting system. The illumination system according to claim 1 or 2,
Dividing the room into a plurality of areas;
The human detection sensor and the face recognition sensor are installed for each area,
The controller is
According to the detection result of the human detection sensor in the area, lighting control for the task lighting device in the area,
Depending on the detection result of the face recognition sensor in the area, lighting control of the base lighting fixtures in all the areas,
Lighting system. The illumination system according to any one of claims 1 to 3,
The controller is
When the human detection sensor and the face recognition sensor do not continue the same detection state after a lapse of a predetermined time after detecting the orientation of the person and the face, respectively,
Changing the lighting control state of the task lighting fixture and the base lighting fixture;
Lighting system.

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