JP2012216355A - Lighting control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting control system capable of suppressing power consumption while providing a visual line guidance effect toward a target area to a person in an illumination space.SOLUTION: A lighting control section controls so that a light source section of a lighting device 10d corresponding to a target area TA is turned off when a determination section determines that a human moving direction I and a target direction M are different from each other.

Description

  The present invention relates to an illumination control system that controls a light source unit according to the presence or absence of a person.

2. Description of the Related Art Conventionally, an illumination control system that controls an illumination device having a light source unit using a sensor is known (see, for example, Patent Document 1).
In the illumination control system of Patent Document 1, the movement of a person photographed by a camera is measured as flow line data, and the illumination space that the light from the lighting device reaches is divided into a plurality of areas, and each area is based on the flow line data. Determine the distribution of people. Then, by using the determination result, lighting by a specific area is turned on brighter than the surroundings, or by changing the light color, it is possible to produce an effect by lighting. With this lighting device effect, for example, it is possible to guide a person to a part that he / she wants to show (appeal) to the person, aiming at the effect of guiding the user's line of sight.

JP 2004-178129 A

  By the way, in the illumination control system as described above, a person can be guided by lighting a specific area of the illumination space (indoor space) brighter than the surroundings. However, since it is turned on regardless of the intention of the person who entered the room, there is a concern that the power consumption will increase more than necessary.

  The present invention has been made in order to solve the above-described problems, and the object thereof is to suppress power consumption while giving a gaze guidance effect to a target area for a person in an illumination space. It is to provide a lighting control system.

  In order to solve the above problems, an illumination control system of the present invention includes a sensor unit that obtains image data of an illumination space, and an illumination space that is divided into a plurality of areas based on the output result of the sensor unit. A determination unit that determines the presence distribution of a person, and a lighting control unit that controls the light source unit corresponding to each area by changing the illumination condition of each area based on the distribution of the presence area of the person determined by the determination unit A target area storage unit that stores a preset area as a target area among each of the areas divided into a plurality of areas, and each of the area from a person's presence area to the target area A route area determination unit that determines the order of the areas as a root area, and a person's moving direction in the presence area based on a time-series change of the person's presence area. A moving direction determination unit to be processed, a target direction determination unit that determines a target direction based on a determination result by the route area determination unit and a person's presence area and an area in the next order of the presence area; When the comparison result is within a predetermined threshold range, it is determined that the movement direction of the person and the target direction are the same direction, and when the comparison result is outside the predetermined threshold range, A direction comparison / determination unit that determines that the moving direction and the target direction are different directions, and the lighting control unit corresponds to the target area when the direction comparison / determination unit determines a different direction. The light source unit is controlled to be dimmed or turned off as compared with the case where the direction comparison determination unit determines that the direction is the same.

  In the above configuration, the lighting control unit compares the light source unit in the route area from the existing area to the target area with the light source unit in other areas when the direction comparison determination unit determines that the direction is the same. It is preferable to control the light output or the light color to be different.

In the above configuration, the target area storage unit is preferably configured to be able to change the target area.
In the above-described configuration, it is preferable that an optical axis driving unit that changes an optical axis of the light source unit is provided, and the optical axis driving unit drives the corresponding light source unit to the target area.

  In the above configuration, the optical axis driving means preferably drives the corresponding light source unit to the target area along the route area.

  ADVANTAGE OF THE INVENTION According to this invention, the illumination control system which can suppress power consumption can be provided, providing the gaze guidance effect to the target area with respect to the person in illumination space.

It is explanatory drawing for demonstrating the installation aspect of the illumination control system in this embodiment, and an illuminating device. It is a block diagram for demonstrating the electrical structure of the illumination control system and illumination apparatus same as the above. It is a flowchart for demonstrating the example of control of the illuminating device same as the above. It is a flowchart for demonstrating the example of control of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 1st operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 2nd operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 2nd operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 2nd operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 2nd operation example of the illuminating device same as the above. It is explanatory drawing for demonstrating the 2nd operation example of the illuminating device same as the above. It is a block diagram for demonstrating the electrical structure of the illumination system in another example, and an illuminating device. (A) (b) is a schematic block diagram of the drive mechanism which changes the direction of the optical axis of the light source part in another example. It is a block diagram for demonstrating the electrical constitution of the illumination control system provided with the drive mechanism in the same as the above. It is explanatory drawing for demonstrating the example of a change of direction of the optical axis using the drive mechanism same as the above. It is explanatory drawing for demonstrating the area of the illumination space in another example.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the illumination control system according to the present embodiment controls a plurality of illumination devices 10 a to 10 f and the illumination devices 10 a to 10 f on, for example, a ceiling R in a room K (illumination space). CP and the sensor part S which consists of a thermal image sensor are provided.

  As shown in FIG. 2, each of the lighting devices 10a to 10f includes a plurality of first light source units LS1 to LS6 and first power supply circuits PSC1 to PSC1 that control power supply to the light source units LS1 to LS6. 6 power supply circuit PSC6.

  Each light source unit LS1 to LS6 provided in each of the lighting devices 10a to 10f has the light source units LS1 to LS6 when the illumination space (room K) is divided into six areas A1 to A6 as shown in FIG. The optical axis is provided so as to be approximately the center position of the corresponding areas A1 to A6. Each of the light source units LS1 to LS6 includes, for example, an LED (Light Emitting Diode) element.

  A total of six first power supply circuits PSC1 to PSC6 provided in each of the lighting devices 10a to 10f are provided corresponding to each of the light source units LS1 to LS6, and these power supply circuits PSC1 to PSC6 are controlled by the control unit CP. Independent control is possible in the lighting control unit CP1. Note that, in order from each area A1 to A6, the lighting device 10f including the sixth light source unit LS6 and the sixth power supply circuit PSC6 sequentially corresponds to the lighting device 10a including the first light source unit LS1 and the first power supply circuit PSC1. It is configured as follows.

  The sensor unit S is configured by a thermal image sensor that measures the temperature of an object (in the case of the present embodiment, a person), and the presence or absence of a person can be measured by this temperature change. The sensor unit S is electrically connected to the determination unit CP2 of the control unit CP.

  In the room K in which the illumination control system (illuminating devices 10a to 10f) of the present embodiment is installed, two doors D1 and D2 that can be opened and closed are provided at opposing positions, and the room K is provided at each door D1 and D2. Access to and from is possible.

Next, a control example of the illumination control system including the illumination devices 10a to 10f of the present embodiment will be described.
First, in a state where the lighting devices 10a to 10f (lighting control system) can be driven, the determination unit CP2 of the control unit CP sets “0” as the number of people in each of the preset areas A1 to A6 (step S10). . In the present embodiment, description will be made assuming that the room K (illumination space) is partitioned into six areas A1 to A6. The number of areas and the adjacent relationship between the areas A1 to A6 can be input using a setting input unit (not shown) that can be operated by the user. It is stored in a memory in (determination unit CP2) or an external memory.

  Next, the lighting control unit CP1 of the control unit CP controls the lighting devices 10a to 10f to be turned off based on the condition that the person determined by the determination unit CP2 is absent (step S11). Specifically, if the lighting devices 10a to 10f are in the lighting state, the lighting control unit CP1 of the control unit CP turns off the lighting devices 10a to 10f with the power supply to the lighting devices 10a to 10f being not supplied. Move to the extinguished state. Moreover, if the illuminating devices 10a to 10f are turned off in advance, the lighting control unit CP1 of the control unit CP continues to supply power to the illuminating devices 10a to 10f in a non-supplied state. That is, when the lighting devices 10a to 10f are installed indoors and are in an initial setting state, the operation is started assuming that no person is present.

Then, the determination unit CP2 of the control unit CP from the sensor unit S comprising a thermal image sensor as viewed from the ceiling R side of the chamber K obtains the image I _o of the floor side (updated) to its own internal memory or an external connection The stored data is stored in the external memory (step S12).

Thereafter, the determination unit CP2 of the control unit CP obtains the output image I (t) at the time t from the sensor unit S composed of the thermal image sensor again (step S13).
And control part CP determines whether the number of persons in all the areas A1-A6 in the room K is "0" (step S14).

If the number of people in all the areas A1 to A6 in the room K is “0” (step S14: YES), the control unit CP acquires the background image _Io and the image I (t) acquired in steps S12 and S13. A difference image I _s (t) is calculated by taking the difference (step S15). Incidentally, the difference image I _s (t) is a difference value between pixels having the same coordinates in the background image I _o and the image I (t), calculated for all pixels, and normalized to that value as necessary. It is an image in which the conversion is performed and the value is used as the pixel value of each pixel.

Next, the determination unit CP2 of the control unit CP performs various processes of the room entry detection process (step S16). Specifically, the determination unit CP2 of the control unit CP binarizes the difference image I _s (t) with a preset threshold value. That is, if the difference image I _s (t) is greater than or equal to the threshold for each pixel, the pixel is replaced with, for example, a white pixel, and if less than the threshold, the pixel is replaced with a black pixel. Pixels can be extracted. As a result, if a white pixel is obtained, the sensor unit S generates a binary image data Ib (t) as a result of a state different from that in the background image _Io , that is, a person enters the room. Note that the binary image data Ib (t) is not generated if only a result less than the threshold is obtained for each pixel of the difference image I _s (t).

Next, the determination unit CP2 of the control unit CP determines whether or not a person has entered the room based on whether or not the binary image data Ib (t) has been generated (step S17).
If the binary image data Ib (t) has not been generated (step S17: NO), the determination unit CP2 and the control unit CP repeat the processing from step S10.

  On the other hand, when the binary image data Ib (t) is generated (step S17: YES), the determination unit CP2 outputs a signal indicating that a person has entered the room to the lighting control unit CP1. And lighting control part CP1 controls each light source part LS1-LS6 corresponding to each area A1-A6 on the illumination conditions in the state where the person entered (step S18). In the case of the present embodiment, the light source units LS1 to LS6 of the areas A1 to A6 are controlled according to the scene numbers of the data table as shown in FIG. 9 stored in advance in the lighting control unit CP1 itself or in an external storage unit.

  Next, the lighting control unit CP1 of the control unit CP sets the number of people in at least one area (arbitrary area) to 1 (step S19), and repeats the processing from step S13.

  On the other hand, as shown in FIG. 4, if the number of people in all areas A1 to A6 is not “0” (step S14: NO), the determination unit CP2 determines which area the person is in (step S20). .

Specifically, the determination unit CP2 acquires the output image I (t) of the sensor unit S at a certain time t at the sensor unit S. The determination unit CP2 calculates a difference image I _s (t) from the output image I (t) and the background image I _o acquired in step S12 described above. Then, as implemented in step S16 described above, the determination unit CP2 binarizes the difference image I _s (t) with a preset threshold value. That is, for each pixel of the difference image I _s (t), if it is greater than or equal to the threshold, it is replaced with, for example, a white pixel, and if less than the threshold, it is replaced with a black pixel. As a result, if a white pixel is obtained, the sensor unit S generates a binary image data Ib (t) as a result of a state different from that in the background image _Io , that is, a person enters the room. Note that the binary image data Ib (t) is not generated if only a result less than the threshold is obtained for each pixel of the difference image I _s (t). Then, the determination unit CP2 calculates which areas A1 to A6 of the room K a person corresponds to, for example, a white pixel in the binary image data Ib (t) based on the coordinate data.

  Thereafter, the determination unit CP2 calculates how many people are present in each of the areas A1 to A6 where the people are present in Step S20 (Step S21). Specifically, the number of independent white pixel clusters in the binary image data Ib (t) is calculated for each of the existing areas A1 to A6, and the calculation result is set as the number of persons for each area A1 to A6. judge. Incidentally, all threshold processing such as calculation of a lump of white pixels is realized by a labeling method of image processing. In addition, based on knowledge such as the arrangement of the sensor unit S and the size of a person, a block whose pixel area different from the background pixel is less than a specified value or a block having a specified value different from the specified value is not counted as the number of people. You may do it.

Next, the determination unit CP2 determines whether or not the number of people in all the areas A1 to A6 is 0 (step S22).
If the number of people in all the areas A1 to A6 is 0 (step S22: YES), the determination unit CP2 repeats the process from step S10.

  On the other hand, if the number of persons in all the areas A1 to A6 is one or more (step S22: NO), the determination unit CP2 calculates the presence / absence of a person, the number of the area where the person exists, the number of persons, and the like.

  Next, the determination unit CP2 calculates a route area that is the order of each area from the human presence area to the destination area (step S23). Specifically, based on the adjacent relationship information of each area A1 to A6 and the distance information from the central position coordinates of each area A1 to A6 to the adjacent area from the memory in the control unit CP (determination unit CP2) or the external memory. For example, the determination unit CP2 calculates the route area using the Dijkstra method. As an example, for example, if the existence area is area A1 and the target area TA is area A4 as shown in FIG. 7, the order of the areas with the shortest route is area A1 → area A2 → area A3 → area A4.

  Next, the determination unit CP2 calculates the movement direction I of the person (Step S24). Specifically, the determination unit CP2 calculates the moving direction I of the person based on the history of the presence area derived from the presence area determination processing result. In addition, the determination unit CP2 can calculate the movement direction I from the movement of a person in the same area even when the determination unit CP2 is in the same area. In the former, for example, when a person moves from the area A1 to the area A2, a vector is calculated from the center coordinates of the areas A1 and A2, and the moving direction I is set. In the latter case, the moving direction I in the area can be calculated from the time-series change of the image in the area by the sensor unit S.

  Next, in the route area from the person's presence area to the destination area derived in the route determination process (step S23), the determination unit CP2 determines the destination CP based on the positional relationship between the current presence area and the area next to the presence area. A direction is determined (step S25). For example, when the current existing area is area A1 as shown in FIG. 7 and the target area TA is area A4, the central coordinates of area A1 and the adjacent area on the target area TA side as viewed from this area A1 A vector is calculated from the center coordinates of A2. This vector is the target direction M.

  Next, the movement direction I of the person calculated in the above-described process is compared with the target direction M, and the determination unit CP2 determines whether the target direction M and the movement direction I match (step S26). Here, the determination unit CP2 calculates the angle formed by the two vectors by obtaining the movement direction I and the target direction M of the person as vectors. Then, the determination unit CP2 determines that the moving direction I and the target direction M are the same direction when the calculated angle is within a preset threshold value (for example, 0 degrees to 45 degrees). The determination unit CP2 determines that the movement direction I and the target direction M are different directions when the calculated angle is outside the range of the threshold value.

When the moving direction I and the target direction M are the same (step S26: YES), the lighting control unit CP1 corresponds to the light source corresponding to the lighting condition based on the presence area and the number of people obtained from the determination unit CP2. The units LS1 to LS6 are controlled. As an example,
On the other hand, when the moving direction I and the target direction M are different (step S26: NO), the lighting control unit CP1 turns off the light source unit (fourth light source unit LS4 in the present embodiment) of the target area TA (step S28). ). In step S28, the lighting control unit CP1 further controls the corresponding light source units LS1 to LS6 other than the target area TA under illumination conditions based on the presence area and the number of persons obtained from the determination unit CP2.

After step S27 or step S28, the determination unit CP2 and the lighting control unit CP1 repeat the processing from step S13.
(First operation example)
Next, a first operation example of the illumination control system including the illumination devices 10a to 10f in which the above-described configuration and control are performed will be mainly described with reference to FIGS.

  Further, an arbitrary area in the areas A1 to A6 (in this embodiment, the area A4 in which the target T is arranged in the room K) is set as the target area TA, the memory in the control unit CP (determination unit CP2) or the outside Stored in memory.

  As shown in FIG. 5, when no people are present in all the areas A1 to A6 of the room K (lighting space), the lighting control unit CP1 controls each of the areas A1 to A6 under lighting conditions in which no people are present. The light sources LS1 to LS6 are controlled so as to be turned off (light emission output 0%).

  As shown in FIG. 6, when a person H1 enters from the door D1, which is an entrance, the lighting control unit CP1 turns on the light source units LS1, LS6 of the illumination devices 10a, 10f corresponding to the areas A1, A6 associated with the entrance. The light output changes from 0% to 30% and lights up. At this time, the lighting control unit CP1 maintains the lighting devices 10b to 10e corresponding to the other areas A2 to A5 in the light-off state (light emission output 0%).

  When the determination unit CP2 determines that the movement direction I of the person H1 existing in the area A1 and the target direction M coincide with each other, the lighting control unit CP1 displays the lighting device 10a in the area A1 as shown in FIG. The light emission output of the light source unit LS1 is changed from 30% to 100% and turned on. At this time, the light emission output of the light source unit LS4 of the illumination device 10d in the area A4, which is the target area TA, is changed from 0% to 100%, and is lit. In addition to this, the lighting control unit CP1 changes the light output LS6 of the lighting device 10f corresponding to the area A6 from 30% to 0% and turns off the light.

  As illustrated in FIG. 8, when the person H1 moves from the area A1 to the adjacent area A2, the determination unit CP2 determines that the moving direction I and the target direction M of the person H1 are the same. In response to this result, the lighting control unit CP1 changes the light emission output of the light source unit LS2 of the lighting device 10b corresponding to the area A2 from 0% to 100% to turn on, and the lighting device 10d of the area A4 which is the target area TA. The light emission output of the light source unit LS4 is maintained at 100%. In addition to this, the lighting control unit CP1 changes the light emission output of the light source unit LS1 of the lighting device 10a corresponding to the area A1 where the person H1 is absent from 100% to 0% and turns off the light.

  As illustrated in FIG. 9, when the person H1 moves from the area A2 to the adjacent area A3, the determination unit CP2 determines that the moving direction I and the target direction M of the person H1 are the same. In response to this result, the lighting control unit CP1 changes the light emission output of the light source unit LS3 of the lighting device 10c corresponding to the area A3 from 0% to 100% to turn on, and the lighting device 10d of the area A4 that is the target area TA. The light emission output of the light source unit LS4 is maintained at 100%. In addition to this, the lighting control unit CP1 changes the light emission output of the light source unit LS2 of the lighting device 10b corresponding to the area A2 where the person H1 is absent from 100% to 0% and turns off the light.

  As shown in FIG. 10, when the person H1 moves from the area A3 to the area A2 away from the target area TA, the determination unit CP2 determines that the moving direction I of the person H1 is different from the target direction M. In response to this result, the lighting control unit CP1 changes the light output of the light source unit LS2 of the lighting device 10b corresponding to the area A2 from 0% to 100% and turns on, and the lighting control unit CP1 of the lighting device 10d in the area A4 which is the target area TA. The light emission output of the light source unit LS4 is changed from 100% to 0% and turned off. In addition to this, the lighting control unit CP1 changes the light emission output of the light source unit LS3 of the illumination device 10c corresponding to the area A3 where the person H1 is absent from 100% to 0% and turns off the light. As described above, when the moving direction I and the target direction M are different, it is determined that the person H1 does not see and the light source LS4 in the corresponding area A4 (target area TA) is turned off to save power. It can be done.

  As shown in FIG. 11, when the person H1 moves from the area A2 to the area A1 away from the target area TA, the determination unit CP2 determines that the moving direction I of the person H1 and the target direction M are different. In response to this result, the lighting control unit CP1 changes the light emission output of the light source unit LS1 of the lighting device 10a corresponding to the area A1 from 0% to 100% and turns on, and the lighting control unit CP1 of the lighting device 10d in the area A4 which is the target area TA. The light emission output of the light source unit LS4 is maintained at 0% and turned off. In addition to this, the lighting control unit CP1 changes the light emission output of the light source unit LS2 of the lighting device 10b corresponding to the area A2 where the person H1 is absent from 100% to 0% and turns off the light.

  As shown in FIG. 12, when the person H1 leaves the area A1 through the door D1, the determination unit CP2 determines that no person is present in all the areas A1 to A6 of the room K (illumination space). In response to this result, the lighting controller CP1 controls the light sources LS1 to LS6 in the areas A1 to A6 to be turned off (light emission output 0%) under illumination conditions in the absence of a person.

(Second operation example)
Next, a second operation example of the illumination control system including the illumination devices 10a to 10f will be described mainly with reference to FIGS. The difference from the first operation example is that the number of people is different.

  As shown in FIG. 13, in addition to the person H1 existing in the area A1, when the person H2 enters from the door D2 on the area A6 side, the sensor part S and the determination part CP2 detect entry. In response to this result, the lighting control unit CP1 first considers the person H1 present in the area A1, and maintains the light emission output of the light source unit LS1 corresponding to the area A1 as 100%, and the lighting device corresponding to the area A6. The light source unit LS6 of 10f is turned on with a light emission output of 100%. Thereafter, for example, when the determination unit CP2 determines that the moving direction I of the person H2 existing in the area A6 within the area A6 and the target direction M are the same direction, the lighting control unit CP1 determines the light source unit of the illumination device 10d in the target area TA. LS4 is turned on at 100%. At this time, even if the moving direction I on the person H1 side is not particularly considered, the moving direction I of the person in another area and the target direction M coincide with each other, so that the light source of the illumination device 10d in the target area TA The part LS4 is turned on.

  As illustrated in FIG. 14, when the person H2 in the area A6 moves to the area A5, which is a direction approaching the target area TA, the determination unit CP2 determines that the moving direction I of the person H2 and the target direction M are the same. In response to this result, the lighting control unit CP1 changes the light emission output of the light source unit LS5 of the lighting device 10e corresponding to the area A5 from 0% to 100% to turn on, and the lighting device of the area A4 that is the target area TA. The light emission output of the light source unit LS4 of 10d is maintained at 100%. In addition to this, the lighting control unit CP1 changes the light emission output of the light source unit LS6 of the lighting device 10f corresponding to the area A6 where the person H2 is absent from 100% to 0% and turns off the light.

  As shown in FIG. 15, when there are people H1 and H2 in the two areas A1 and A5, when the person H3 enters from the door D2 on the area A6 side, the entrance is detected by the sensor unit S and the determination unit CP2. In response to this result, the lighting control unit CP1 considers the people H1 and H2 in the areas A1 and A5 and maintains the light emission outputs of the corresponding light source units LS1 and LS5 as 100%, and the lighting device 10f corresponding to the area A6. The light source unit LS6 is turned on with a light emission output of 0% → 100%. Thereafter, for example, when the determination unit CP2 determines that the moving direction I of the person H3 existing in the area A6 within the area A6 and the target direction M are the same direction, the lighting control unit CP1 determines the light source unit of the illumination device 10d in the target area TA. LS4 is turned on at 100%. At this time, even if the moving direction I of the persons H1 and H2 is not particularly considered, the moving direction I of the person in another area and the target direction M coincide with each other, so that the lighting device 10d in the target area TA The light source unit LS4 is turned on.

  As illustrated in FIG. 16, when the person H2 in the area A5 moves to the area A6 in which the person H3 is present, the determination unit CP2 determines that the moving direction I of the person H2 is different from the target direction M. In response to this result, the lighting control unit CP1 determines the light source of the illuminating device 10d corresponding to the target area TA (area A4) when the moving direction I and the target direction M are different even in other persons H1 and H2 in the room K. The light output of the unit LS4 is changed from 100% to 0% and controlled to be turned off. In addition to this, the lighting control unit CP1 changes the light emission output of the light source unit LS5 of the illumination device 10e corresponding to the area A5 where the person H2 is absent from 100% to 0% and turns off the light.

  As illustrated in FIG. 17, when the person H1 leaves the area A1 through the door D1, the determination unit CP2 determines that no person is present in all the areas A1 to A6 of the room K (illumination space). In response to this result, the lighting controller CP1 controls the light sources LS1 to LS6 in the areas A1 to A6 to be turned off (light emission output 0%) under illumination conditions in the absence of a person.

Next, the operation of the illumination control system of this embodiment will be described.
In the lighting control system including the lighting devices 10a to 10f of the present embodiment, the movement direction I and the target direction M are considered in consideration of the movement direction I of the person and the target direction M on the side of the target area when viewed from the area where the person exists. Otherwise, the light source part of the lighting device corresponding to the target area is turned off.

Next, characteristic effects of the present embodiment will be described.
(1) The determination unit CP2 stores a preset area A4 as the target area TA among the areas A1 to A6 divided into a plurality of areas, and each of the areas from the human presence area to the target area TA. The area order is determined as the root area. Further, the determination unit CP2 determines the movement direction I of the person in the existence area based on the time series change of the person's existence area, and determines the target direction M from the person's existence area and the area in the next order of the existence area. judge. The determination unit CP2 compares the movement direction I of the person and the target direction M, and determines that the movement direction I of the person and the target direction M are the same direction within the range of the preset threshold value. Further, the determination unit CP2 determines that the human moving direction I and the target direction M are different directions when the comparison result is outside the preset threshold range. When the determination unit CP2 determines that the direction is different, the lighting control unit CP1 controls the light source unit LS4 corresponding to the target area to be turned off. As described above, when the movement direction I of the person is not the target direction M that is the target area side, the light source unit LS4 corresponding to the target area is turned off, thereby reducing wasteful power consumption and contributing to power saving. Can do.

  (2) The sensor unit S is composed of a thermal image sensor that senses human heat. Thereby, for example, even if the room K where the lighting devices 10a to 10f controlled by the lighting control system are installed is a dark place, the presence or absence of a person can be detected more reliably.

In addition, you may change the said embodiment of this invention as follows.
In the above embodiment, although not particularly mentioned, if the determination unit CP2 determines that the direction is the same (YES in Step S26), the light source unit in the route area from the existing area to the target area TA is set to the other direction. Control may be performed so that the light output or light color is different from that of the light source unit in the area. With such a configuration, the light source unit in the route area can be made more conspicuous than the light source units in other areas, so that the effect of guiding the person to the target area TA and the effect of guiding the line of sight can be enhanced. .

  In the above embodiment, although not particularly mentioned, for example, a trigger signal for changing the target area TA is output to the electrically connected determination unit CP2 using a remote control or touch panel that can be operated by the user. The target area TA may be changed. By setting it as such a structure, a user's desired area can be set as a target area.

  For example, when the position (area) of the target target T (irradiation target) changes for each time zone, day of the week, and season, the time zone, day of the week, season, etc. are set in advance according to the setting. It is good also as a structure changed automatically by.

In addition, the lighting control system may be configured to specify an individual with a barcode, an IC tag, or the like, so that the target area TA is individually set and changed to the target area TA for each individual.
In the above embodiment, the light source unit LS4 corresponding to the target area TA (area A4) is turned off when the human moving direction I and the target direction M are different from each other. It is good also as a structure lower than the light output of light source part LS4 in case the direction I is the same. For example, when the light output of the light source unit LS4 when the target direction M and the moving direction I are the same is 100%, the light output of the light source unit LS4 when the target direction M and the moving direction I are different is 100. By making it less than%, power saving can be achieved. Note that the light output of the light source unit LS4 when the target direction M and the moving direction I are the same may be changed to a light output desired by the user depending on the use environment.

  In the above-described embodiment, the thermal image sensor is used as the sensor unit S that detects the presence or absence of a person and the number of persons. However, the present invention is not limited to this. For example, a configuration in which an image sensor such as a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor is used as the detection unit may be employed.

  -In the said embodiment, although it does not mention in particular, you may unify the luminescent color of each light source part LS1-LS6. Moreover, it is good also as a structure from which luminescent color differs for each light source part LS1-LS6.

  -In the said embodiment and the said structure, although the control example of illuminating device 10a-10f was demonstrated using FIG.3 and FIG.4, if it is a category of this invention, it will not restrict to the said control example. In short, if the moving direction I of the user is different from the target direction M, which is the direction of the target area as viewed from the current area, the lighting device (light source unit) in the target area is turned off or dimmed. Good.

  In the above embodiment, the lighting devices 10a to 10f are provided for each of the areas A1 to A6. However, the present invention is not limited to this, and the number of lighting devices may be increased or decreased from the number of areas A1 to A6. .

  When the number of lighting devices is smaller than the number of areas, a driving mechanism 21 that changes the direction of the optical axis OA of the lighting device is provided as shown in FIGS. A configuration in which the optical axis OA of the light source unit 22 is changed so that the existing area is turned on is desirable.

  Here, an example of the drive mechanism 21 will be described. As shown in FIGS. 19 (a) and 19 (b), a substantially disc-shaped base portion 31 of the drive mechanism 21 is installed on the ceiling R. The base portion 31 is provided with a substantially disk-shaped rotating plate 32 that is rotatable with respect to the base portion 31. Two support members 33 that support the light source unit 22 in a tiltable state are provided on the surface of the rotating plate 32 opposite to the base unit 31 side. A drive source (for example, a motor) (not shown) in the drive mechanism 21 is controlled by the drive control unit CP3 of the control unit CP shown in FIG. The light source unit 22 is tilted with respect to the support member 33. The drive mechanism is not limited to the drive mechanism 21 as shown in FIG. 19 and may be any configuration as long as the position (orientation) of the optical axis of the light source unit of the illumination device can be changed by an actuator.

  The driving mechanism 21 drives the area from the human presence area shown in FIG. 21 to the target area TA calculated by the determination unit CP2. In this case, for example, by moving along route areas R1 to R3 as shown in FIG. 21, for example, calculated by the determination unit CP2, the user can be guided to a target area through a desired area. Become.

  -Although not mentioned in particular in the said embodiment, you may employ | adopt the structure which provides an optical member or a reflecting plate in each light source part. Moreover, you may employ | adopt the structure which changes the optical axis of a light source part by moving these optical members or a reflecting plate. With such a configuration, it is possible to produce various illumination conditions (scenes). As the optical member, for example, various lenses, prisms, light diffusion filters, condensing filters, polarizing filters, wavelength cut filters, wavelength conversion filters, louvers, and the like can be used. Further, as the reflecting plate, for example, an alumite reflecting plate, an aluminum deposition reflecting plate, a silver deposition reflecting plate, a resin reflecting plate, a cold mirror, or the like can be used.

  In the above embodiment, six lighting devices 10a to 10f are provided for the room K, but the number thereof may be arbitrarily changed. For example, you may change suitably according to the number of areas which divide illumination space (indoor space).

  In the above embodiment, one light source unit is provided for each of the plurality of lighting devices 10a to 10f. However, a configuration in which a plurality of light source units are provided in at least one, a plurality, or all of the lighting devices 10a to 10f. It may be adopted.

In the above embodiment, the plurality of lighting devices 10a to 10f are provided on the ceiling R of the room K. However, for example, they may be provided on the side wall or floor of the room K.
In the above embodiment, a single sensor unit S is provided in the room K. However, a configuration is adopted in which the presence or absence of people and the number of people are detected individually by a plurality of sensor units or by summarizing information of each sensor unit. Also good.

  Moreover, when providing the sensor part S with two or more, you may employ | adopt the structure each provided, for example for each area A1-A6. With such a configuration, it is possible to more reliably detect the presence and number of persons in each area A1 to A6.

  -Although it does not mention in the said embodiment in particular, as shown in FIG. 18, it is good also as a structure which isolate | separated the sensor part S and control part CP from several illuminating device (light source part). In this case, communication units C1 and C2 are provided between the sensor unit S and the control unit CP, and various communication signals are transmitted and received by the communication units C1 and C2. In addition, communication units C3 and C4 are provided between the control unit CP and the illumination device 10a, and various communication signals are transmitted and received by the communication units C3 and C4. Further, communication units C3 and C5 are provided between the control unit CP and the lighting device 10b, respectively, and communication signals according to various protocols are transmitted and received by the communication units C3 and C5. Communication signals include DALI (Digital Addressable Lighting Interface), visible light communication, infrared data communication standard (IrDA), RF (Radio Frequency), Zigbee, Bluetooth (registered trademark), wireless LAN standard. (IEEE802.11) and the like are not particularly limited.

  In the above embodiment, the present invention is applied in the room K (illumination space) in which each area A1 to A6 is adjacent in one direction, that is, each area A1 to A6 is adjacent to one or two areas. Not limited to this. For example, the present invention may be applied to a room K (lighting space) in which a certain area is adjacent to three or more areas. As an example, a configuration in which areas are divided into T-shapes as shown in FIG. 22 can be considered. However, the present invention is not limited to this, and an area may be divided into an L shape, an H shape, or a cross shape.

  For example, as shown in FIG. 22, the areas A1 to A6 are divided so that the areas A1 to A6 are adjacent to each other in the same direction as in the above embodiment. For example, the area A4 is divided so as to be adjacent to the area A7 in addition to being adjacent to the areas A3 and A5. The area A7 is divided so as to be adjacent to the area A8 on the side opposite to the area A4. The adjacent information of each area, the distance between the areas, and the like are electrically connected to, for example, the internal memory of the control unit CP (determination unit CP2) or an external memory electrically connected to the control unit CP. It is configured to be referable.

  For example, when the area A8 is set as the target area TA as shown in FIG. 22, for example, when a person is in the area A1 corresponding to the door D1, the route area from the area A1 to the target area TA is determined by the determination unit. Calculated at CP2. In this case, using the Dijkstra method, the determination unit CP2 determines (calculates) area A1 → area A2 → area A3 → area A4 → area A7 → area A8 as the root area.

  -In above-mentioned embodiment, although each light source part LS1-LS6 was comprised with the LED element, it is not restricted to this. For example, an organic EL (Electro-Luminescence) element, an inorganic EL (Electro-Luminescence) element, an HID (High Intensity Discharge) lamp, an incandescent lamp, or the like may be used.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(B) The illumination control system according to any one of claims 1 to 6, wherein the sensor unit is configured by a thermal image sensor.

  In this way, since it is possible to detect the presence or absence of a person with a thermal image sensor that senses the heat of a person, for example, even if the room where the lighting device controlled by the lighting control system is installed is in a dark place The presence or absence of a person can be detected reliably.

  DESCRIPTION OF SYMBOLS 10a-10f ... Illuminating device, 21 ... Drive mechanism (optical axis drive means), 22, LS1-LS6 ... Light source part, CP1 ... Lighting control part, CP2 ... Target area memory | storage part, a route area determination part, a moving direction determination part, and Determination unit as target direction determination unit and direction comparison determination unit, S ... sensor unit, A1-A8 ... area (existing area), H1-H3 ... person, I ... moving direction, K ... indoor (illumination space), M ... Target direction, OA ... optical axis, R1-R3 ... route area, TA ... target area.

Claims (5)

A sensor unit that obtains image data of the illumination space, a determination unit that determines the presence distribution of people in each area in the illumination space that is divided into a plurality of areas based on the output result of the sensor unit, and the determination by the determination unit A lighting control system having a lighting control unit that controls the light source unit corresponding to each area by changing the lighting condition of each area based on the distribution of the presence area of the person to be
Among the areas divided into a plurality of areas, a target area storage unit that stores a preset area as a target area, and the order of each area from the person's presence area to the target area is determined as a root area. A route area determination unit, a movement direction determination unit for determining a movement direction of a person in the presence area based on a time-series change of the person's presence area, a person presence area and the presence based on a determination result by the route area determination unit The target direction determination unit that determines the target direction from the area in the next order of the area, and the comparison result of the person's movement direction and the target direction and the comparison result is within a preset threshold range, the person's movement direction and the purpose It is determined that the direction is the same direction, and the movement direction of the person and the target direction are different when the comparison result is outside a preset threshold range. And a direction comparison determination unit determines,
When the lighting control unit determines that the direction comparison determination unit is in a different direction, the light source unit corresponding to the target area is dimmed or compared with the case where the direction comparison determination unit determines that the direction is the same. An illumination control system that is controlled to be turned off. The lighting control system according to claim 1.
When the direction comparison and determination unit determines that the direction is the same direction, the lighting control unit compares the light source unit of the route area from the existing area to the target area with the light source unit of other areas, and outputs light. Or the illumination control system characterized by controlling so that light colors may differ. In the lighting control system according to claim 1 or 2,
The lighting control system, wherein the target area storage unit is configured to change the target area. In the lighting control system according to any one of claims 1 to 3,
An optical axis driving means for changing the optical axis of the light source unit;
The optical axis driving unit drives the corresponding light source unit to the target area. The lighting control system according to claim 4.
The optical axis driving unit drives a corresponding light source unit to the target area along the route area.

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