JP2009283183A - Illumination control system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and quickly perform a process to harmonize the logical addresses of a plurality of luminaires disposed in an indoor space with their physical addresses. <P>SOLUTION: This illumination control system 1 includes image sensors 3, 4 to image luminaires 11-19 disposed in three rows and three columns on the ceiling of an office 2 from two directions (x, y) perpendicular to each other, a control part 5 to grasp the coordinates of the lighted luminaires based on the images which the image sensors 3, 4 have imaged. A virtual plane is formed by the imaging directions (x, y) perpendicular to each other. The control part 5 lights the luminaires one by one starting from one having a logical address of No.1, computes the x coordinates of the luminaires on the virtual plane based on the imaged images received from the image sensor 3, computes the y coordinates of the luminaires on the virtual plane based on imaged images received from the image sensor 4, and grasps the x, y coordinates. The control part 5 harmonizes the logical addresses of the lighted luminairs with their physical addresses based on the grasped x, y coordinates. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting control system that controls lighting of a plurality of lighting fixtures arranged in an indoor space based on imaging data obtained by imaging the indoor space.

  Conventionally, a plurality of lighting fixtures are arranged on the ceiling of an office, and an imaging device is incorporated in one of the plurality of lighting fixtures, and assigned to the plurality of lighting fixtures based on imaging data captured by the imaging device. There is known a lighting system in which a temporary ID number as a logical address is associated with an actual position of a lighting fixture as a physical address (see, for example, Patent Document 1). In this lighting system, after the temporary ID number of the lighting fixture is associated with the actual position, lighting control of the lighting fixture at an arbitrary position designated by the user is performed.

In the above lighting system, the imaging device images the floor plane illuminated by each lighting fixture from the ceiling side of the office, and the imaging area is divided into small areas corresponding to the respective mounting positions of the lighting fixture in advance. Then, when associating the temporary ID number with the actual position of the luminaire, the small area that is lit in order from the luminaire assigned number 1 as the temporary ID number and the brightest area is It is comprised so that it may recognize that it is the actual position of the lighting fixture which is lighting. The process of associating the temporary ID number with the actual position of the luminaire needs to be performed when a new office lighting facility is installed or when the layout of the luminaire is changed. Is automatically executed, so that the user's hand is not bothered.
JP 2002-289373 A

  However, in the lighting system described above, detection processing of the brightest small area for specifying the actual position of the lighting fixture that is lit tends to be complicated, and as a result, the temporary ID number as the logical address and the actual lighting fixture actual There is a possibility that the process of associating with the position takes time or is not accurate. Specifically, in the illumination system, since the brightest small area is detected by comparing the brightness levels of all the small areas spread on a plane, imaging is performed as described in Patent Document 1. When the areas are arranged in 3 rows and 5 columns, first, the brightness is detected for every 15 small areas, divided into several ranks according to the degree of brightness, and finally the brightest rank It is necessary to select one small area from among the small areas classified as (1).

  Therefore, the present invention solves the above-described problem, in an illumination control system that controls lighting of a plurality of lighting fixtures arranged in an indoor space based on imaging data captured by an imaging device that images the indoor space. An object of the present invention is to provide a lighting control system capable of simply and quickly performing a matching process between a logical address as an identification number assigned to each lighting fixture and a physical address as an actual position in the indoor space of the lighting fixture. .

  In order to achieve the above object, the invention of claim 1 controls lighting of the luminaire based on an imaging device that images an indoor space in which a plurality of luminaires are arranged, and imaging data captured by the imaging device. A control unit, wherein the imaging device includes two image sensors arranged to image the indoor space from a substantially orthogonal direction, and the control unit includes the image sensor. Based on the captured image data from two directions substantially orthogonal to each other, the coordinates of the lighting fixture in the plane formed by the imaging directions intersected by the image sensor are grasped, and each lighting fixture is determined based on the grasped coordinates. It has an address matching mode for matching a logical address as an identification number to be attached and a physical address as an actual position in the indoor space of the lighting fixture.

  The invention according to claim 2 is the illumination control system according to claim 1, wherein when the control unit detects a person in the image data captured by the image sensor, the controller grasps the coordinates of the person in the plane, It has a human detection mode for controlling lighting of the lighting apparatus based on the grasped coordinates.

  According to the first aspect of the present invention, the coordinates of each lighting fixture are grasped based on the imaging data obtained by imaging the indoor space in which the plurality of lighting fixtures are arranged from the substantially orthogonal direction, and the logical address is based on the grasped coordinates. Since the physical address and the physical address are matched, the matching process between the logical address and the physical address can be performed easily and quickly.

  According to the second aspect of the present invention, when the lighting control system detects a person in the image data captured by the image sensor, the lighting control system grasps the coordinates of the person and turns on the luminaire based on the grasped coordinates. Since the control is performed, it is possible to illuminate while reliably following the position of the person.

  Hereinafter, an illumination control system according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the lighting control system 1 of the present embodiment includes nine lighting fixtures 11, 12... 19 arranged in 3 rows and 3 columns on the ceiling of an office 2 (indoor space). Are individually controlled to be turned on / off and dimmed. Each lighting fixture 11-19 adjusts the light output (brightness) of a light source by outputting a light control signal to each light source 11a-19a which consists of a fluorescent lamp, an incandescent lamp, an LED lamp, etc., and each light source 11a-19a. Optical signal output units 11b to 19b. FIG. 1 is a diagram when the office 2 is viewed from the near side in the depth direction.

  The illumination control system 1 includes an image sensor 3 installed in the upper part of the back wall and an image sensor 4 installed in the upper part of the right wall as an imaging device in the office 2. Both the image sensors 3 and 4 are composed of, for example, a CCD camera. The image sensor 3 captures the entire image including the ceiling of the office 2 from the back side toward the near side, and the image sensor 4 includes the entire image including the ceiling of the office 2. Image from right to left. In other words, the entire image including the ceiling where the lighting fixtures 11 to 19 of the office 2 are installed is configured to be imaged by the two image sensors 3 and 4 from two orthogonal directions.

  The lighting control system 1 includes a control unit 5 that is wired or wirelessly connected to both the image sensors 3 and 4, and a setting input unit 6 for a user to input a light output or the like for each lighting fixture. . The control unit 5 includes a microprocessor having a plurality of operation modes. When the address matching mode is set, the control unit 5 is lit in the imaging data based on the imaging data received from both the image sensors 3 and 4. The positions (physical addresses) of the lighting fixtures 11 to 19 are calculated as coordinates, and based on the calculation results, the logical addresses previously assigned to the lighting fixtures 11 to 19 are made to coincide with the physical addresses. When the control unit 5 is set to the human detection mode, the human position (physical address) included in the imaging data is calculated as coordinates based on the imaging data received from both the image sensors 3 and 4, and the calculation is performed. Based on the result, dimming control is performed so that the lighting fixture closer to the position where the person is present becomes brighter. The address matching process and the person detection process executed by the control unit 5 will be described in detail later.

  Further, when the control unit 5 is set to the normal dimming control mode, the lighting fixtures 11 to 19 are turned on / off or turned off according to the operation content input by the user operating the setting input unit 6. A control signal is output to the dimming signal output units 11b to 19b so as to obtain a predetermined brightness. Note that the operation mode of the control unit 5 may be configured to be switched by the user operating the setting input unit 6 or may be configured to be switched automatically. For example, when the lighting control system 1 is first installed in the office 2, the address matching mode is automatically selected, and when a person is detected in the image data captured by the image sensors 3 and 4, the person is automatically selected. You may comprise so that detection mode may be selected.

  The setting input unit 6 is installed on the wall surface of the office 2 and is wired or wirelessly connected to the control unit 5. As shown in FIG. 3, the surface 6 a of the setting input unit 6 is configured as a display panel capable of touch input, and the display unit 6 b has the current arrangement of the lighting fixtures 11 to 19 for each lighting fixture. It is displayed in the form of a button together with the light rate, and has a numeric keypad portion 6c for input, a display portion 6d indicating the light control rate, and a character display portion 6e on which setting information for each lighting fixture is displayed. It should be noted that the position of the person in the office 2 is also displayed on the display unit 6b as a humanoid icon 7.

  For example, in the normal dimming control mode, when the user operates the numeric keypad portion 6c and inputs “100” after pressing the first lighting fixture button of the display portion 6b, the display portion 6d displays “100”. % "Is displayed, and the control unit 5 transmits a predetermined dimming signal to the dimming signal output unit 11b of the first luminaire 11 so that the light source 11a has a light output of 100%. To do. It should be noted that the buttons representing the 1st to 9th lighting fixtures displayed on the display unit 6b correspond to the lighting fixtures 11 to 19 in FIG. For example, the 1st luminaire button corresponds to the luminaire 11 arranged at the far left side of the office 2 (physical address: 1), and the 9th luminaire button is This corresponds to the luminaire 19 arranged at the position closest to the right side (physical address: 9).

  Next, address matching processing executed by the control unit 5 when the lighting control system 1 is newly installed in the office 2 or when the layout of the lighting fixtures is changed is shown in FIGS. 4 (a) and 4 (b). This will be described with reference to FIG. First, the control unit 5 turns on the luminaire 15 having the first logical address stored in the memory of the control unit 5 itself. 4A shows a captured image 8 of the office 2 captured by the image sensor 3 when the lighting fixture 15 is turned on, and FIG. 4B shows a captured image 9 of the office 2 captured by the image sensor 4 in the same manner. Show.

  In this embodiment, the luminaire 15 located in the center of the ceiling of the office 2 has the logical address 1. However, the logical address is assigned to each luminaire 11 to 19 before the address matching process. Therefore, it is not necessarily the case that the luminaire with the first logical address is the luminaire in the center of the ceiling.

  And the control part 5 receives the images 8 and 9 imaged by both the image sensors 3 and 4 as mentioned above as imaging data, and the virtual plane formed by the imaging direction where the image sensors 3 and 4 cross | intersect. The coordinates of the luminaire 15 are calculated.

  Specifically, in this embodiment, the imaging direction of the image sensor 3 is a direction from the back side of the office 2 toward the front side (see the arrow y in FIG. 1), and the imaging direction of the image sensor 4 is the right side of the office 2 The virtual plane 10 formed by the imaging directions intersected by the image sensors 3 and 4 is a plane parallel to the floor surface of the office 2 or the ceiling. Become. FIGS. 5A, 5 </ b> B, and 6 illustrate the positional relationship between the virtual plane 10, the image sensors 3 and 4, and the respective lighting fixtures 11 to 19. Here, regarding the plane 10, a direction along the imaging direction of the image sensor 4 is an x coordinate, and a direction along the imaging direction of the image sensor 3 is a y coordinate. Further, it is assumed that the center of the plane 10 is zero for both x and y coordinates.

  Now, since the lighting fixture 15 is turned on and the center area of the captured image 8 received by the control unit 5 is bright, the control unit 5 calculates zero or a value close to zero as the coordinate x1 of the lighting fixture 15. To do. Similarly, the control unit 5 calculates zero or a value close to zero as the coordinate y1 of the lighting fixture 15 based on the captured image data of the captured image 9. In this way, the control unit 5 obtains (x1, y1) as the xy coordinates of the lighting fixture 15. FIGS. 4A, 4B to 6 conceptually show a procedure for obtaining the coordinates (x1, y1) of the lighting fixture 15 from the captured images 8, 9 executed by the control unit 5. FIG.

  The control part 5 grasps | ascertains that the coordinates x1, y1 of the lighting fixture 15 whose logical address is 1 as described above are both zero or a value close to zero, and the arrangement of the lighting fixtures 11 to 19 is determined. Since it is recognized in advance that it is 3 rows and 3 columns, the logical address of the luminaire 15 is reset to No. 5 and stored in order to match the logical address with the physical address.

  Similar processing is executed for the lighting fixtures to which the second and subsequent logical addresses are assigned, and finally the logical addresses of all the lighting fixtures 11 to 19 are matched with the physical addresses. For example, the control unit 5 calculates (x2, y2) as the coordinates of the lighting fixture 16 when the lighting fixture 16 is turned on as the lighting fixture having the second logical address, but the value of x2 is a positive value. , Y2 is zero or a value close to zero, the control unit 5 is such that the actual position (physical address) of the lighting fixture 16 is a rightward position in the left-right direction of the office 2 and is centered in the depth direction. This can be easily grasped, and the logical address of the lighting fixture 16 can be reset to No. 6. In this embodiment, since the arrangement of the lighting fixtures 11 to 19 is 3 rows and 3 columns, the coordinates calculated by the control unit 5 and the actual position of the lighting fixture can be associated with each other relatively easily. However, the same can be done even when the lighting fixtures are arranged in 4 rows and 4 columns or more.

  Next, a human detection mode that is executed when the control unit 5 detects that a person P is in the office 2 will be described with reference to FIGS. For example, when the person P is on the back side of the office 2 and on the left side, the images 28 and 29 captured by the image sensors 3 and 4 are respectively as shown in FIGS. Become.

  The control unit 5 calculates coordinates xa and ya for the person P imaged in the images 28 and 29 in the same manner as the address matching process described above. Specifically, the control unit 5 compares the image captured by the image sensor 3 captured in advance when the human P is absent at night and the like with the image 28 captured by the human P, The coordinate xa of P is calculated, and similarly, the image captured by the image sensor 4 captured when the human P is absent is compared with the image 29 where the human P is captured, and the coordinate ya of the human P is compared. Is calculated. In this way, the control unit 5 obtains (xa, ya) as the xy coordinates of the human P. Here, the coordinates (xa, ya) are physical addresses of the person P ascertained by the control unit 5. FIGS. 7A and 7B to FIG. 9 conceptually show a procedure for obtaining the coordinates (xa, ya) of the human P from the captured images 28 and 29 received by the control unit 5.

  Then, the control unit 5 compares the calculated coordinates (xa, ya) of the person P with the coordinates (x1, y1), (x2, y2),... Of each luminaire already stored in the address matching mode. Based on the above, dimming control is performed so that the luminaire closer to the human P becomes brighter. For example, in this example, since the person P is on the back side and the left side of the office 2, the control unit 5 controls the dimming rate of the latest lighting device 11 to be 100%, and relatively close lighting. The dimming rate of the fixtures 12, 14, 15 is controlled to be 40%, and the dimming rate of the remote lighting fixtures 13, 16, 17, 18, 19 is controlled to be 0%.

  By performing the above-described control, the surroundings of the person P are illuminated brightly and unnecessary illumination is suppressed, which can contribute to energy saving. Moreover, even when the person P moves in the office 2 by setting the imaging interval by the image sensors 3 and 4 to an appropriate short time, the lighting fixtures 11 to 19 follow the movement of the person P and perform dimming control. Is done.

  As described above, the illumination control system 1 according to the present embodiment includes the two image sensors 3 and 4 that capture images of the office 2 from directions orthogonal to each other. Based on this, the coordinates of each luminaire on the virtual plane 10 formed by the imaging direction of the image sensors 3 and 4 are grasped, and the logical address and the physical address are matched based on the grasped coordinates. The matching process can be performed easily and quickly. In addition, the coordinates of the person P are grasped in the same manner, and the lighting fixtures are controlled to be turned on based on the grasped coordinates. Therefore, it is possible to reliably follow the position where the person P is present and illuminate.

The perspective view of the office provided with the illumination control system which concerns on one Embodiment of this invention. The block diagram which shows the same illumination control system. The figure which shows an example of the surface of the setting input part in the illumination control system. (A) is a figure which shows the image which the back side image sensor imaged in the illumination control system, (b) is a figure which shows the image which the right side image sensor imaged in the illumination control system. (A) is a figure which shows notionally operation | movement when a control part calculates the x coordinate of a lighting fixture in the lighting control system, (b) is a control part in the same lighting control system, and calculates the y coordinate of a lighting fixture. The figure which shows notionally operation | movement. The figure which shows notionally operation | movement when a control part grasps | ascertains the xy coordinate of a lighting fixture in the illumination control system. (A) is a diagram showing an image captured by an image sensor on the back side when a person is present in the illumination control system, and (b) is an image captured by a right image sensor when a person is present in the illumination control system. The figure which shows an image. (A) is a figure which shows notionally the operation | movement when a control part calculates a human's x coordinate in the same illumination control system, (b) is when the control part calculates a human's y coordinate in the same illumination control system. The figure which shows operation | movement conceptually. The figure which shows notionally the operation | movement when a control part grasps | ascertains a human xy coordinate in the same illumination control system.

Explanation of symbols

1 Lighting control system 2 Office (indoor space)
3, 4 Image sensor 5 Control unit 8, 9 Captured image (imaging data)
10 Plane 11-19 Lighting fixture 28 Captured image (imaging data)
29 Captured image (imaging data)
x, y Imaging direction P Human

Claims (2)

An imaging device for imaging an indoor space in which a plurality of lighting fixtures are arranged;
A lighting control system comprising: a controller that controls lighting of the lighting apparatus based on imaging data captured by the imaging device;
The imaging device includes two image sensors arranged to image the indoor space from a substantially orthogonal direction,
The control unit grasps the coordinates of the lighting fixture in a plane formed by the imaging directions intersected by the image sensor based on the imaging data from the substantially orthogonal directions imaged by the image sensor, and the grasped coordinates And an address matching mode for matching a logical address as an identification number assigned to each lighting fixture with a physical address as an actual position of the lighting fixture in an indoor space.   When the control unit detects a human in the image data captured by the image sensor, the controller detects the coordinates of the human in the plane and controls lighting of the lighting apparatus based on the acquired coordinates The lighting control system according to claim 1, comprising:

Images