JP2009266532A - Lighting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting control system capable of reducing erroneous detection of a moving object or the like other than a human in controlling a luminaire group by detecting a human by using an image sensor, and carrying out high-reliability lighting control. <P>SOLUTION: This lighting system includes: a light source; an image sensor detecting an image; and a control part controlling the lighting of the light source in response to image information from the image sensor. The lighting system is also provided with a storage part extracting image information of a specific region from the image information of the image sensor to be stored. The control part is structured to control the lighting of the light source by tracking luminance variation generated in a specific region from the output of the image sensor and the output of the storage part to calculate the control content of the lighting of the light source based on the luminance change having occurred in the specific region. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a lighting system, and more particularly, to a lighting device that detects the state of a person existing in a lighting space and performs dimming control of an indoor lighting fixture based on the detection result.

There has been proposed an illumination control device that discriminates the presence / absence of a person in a room, a staying position, and the like by an image sensor installed on the ceiling of the living room, and appropriately blinks and dimms each lighting device in the room.
In general, human detection by an image sensor involves comparing two or more images taken at a certain time interval to identify a portion that has changed, that is, a certain block of pixels that can be considered moving. Is done by. When a person moves and stops still, the above procedure cannot be detected despite the presence of a person, so that a pixel block that has moved before is determined to be human even if it stops. This is avoided by introducing a judgment circuit.

  However, things that move within the field of view (in the image) of the image sensor are not only human beings, for example, curtains and blinds that are swayed by the wind from the window. For this reason, although the person is absent, a malfunction in which the lighting apparatus is lit may occur, which may cause discomfort to the person. Unnecessary lighting leads to consumption of useless power and must be avoided as much as possible.

  A sensor capable of measuring indoor electromagnetic radiation, preferably visible light and infrared light, and a controller for controlling indoor lighting in accordance with the measured electromagnetic radiation, the sensor forming an electrical image of the room; An illumination control device having a video sensor using a solid-state imaging device such as a CCD (charge coupled device) sensor has been proposed (Patent Document 1).

In the above-mentioned patent document, it is described that the control means can control illumination according to the following characteristic values or has the following means.
-Visible light emission value at a predetermined part of the image-Color temperature value of the image-Contrast between the radiation values of the image-Motion detection means-Object recognition means-Remote control device In the above device that can respond to the emitted signal, the position of the window that can be seen in the camera image is specified in advance, and when light is observed near that position, it is excluded from the normal processing system and the lighting fixture malfunctions. Is to prevent. In addition, a threshold level of light intensity (reference value) is set, and the control of the lighting fixture is changed depending on whether or not the threshold level is exceeded. For example, if the luminous intensity exceeds the threshold level, it is excluded from the processing system. It is configured to prevent malfunction.

  However, in the above apparatus, even if the light appearing at and near the window position can be specified, the appearing light can be determined only by setting up / down with respect to a specific threshold level. When it appears in the image of the camera below the threshold level, it cannot be denied that it is determined that the person is a person and the lighting fixture is erroneously turned on. Specifically, as shown in FIG. 11 (a), the luminaire L should be turned on only when a person (luminance block M) is present in the room. As shown in FIG. 5, turning on a television switch placed near the wall may cause a change in luminance, resulting in a malfunction of the light source L. In addition, as shown in FIG. 11 (c), the luminance may change due to a change in luminance due to reflection on the floor surface caused by lighting of a lighting device such as a downlight, or the curtain may be shaken by the wind.

  Furthermore, Patent Document 2 discloses a system that determines a person's position and who the person is and automatically adjusts a service (light, sound, etc.) corresponding to the person within the local environment.

Special Publication 2004-501496 Special Table 2005-529548

  However, as in the case of Patent Document 1, in the above system, even if the position of the window or the position of the person can be specified by the camera, the brightness change caused by things other than the person is other than the person. Since it cannot be determined, for example, the brightness change caused by turning on a TV or the like, the brightness change caused by the reflection on the floor caused by lighting of a lighting device such as a downlight, or the brightness change caused by shaking the curtain / blind When it appears in the image, it cannot be denied that it is determined that the person is a person and the lighting apparatus is erroneously turned on.

As described above, in any of the illumination systems of Patent Documents 1 and 2, even if the presence and position of a person can be specified by a camera, it cannot be determined that the person is other than a person with respect to the movement of things other than the person. The problem of mislighting lighting fixtures remained.
The present invention has been made in view of the above circumstances, and when detecting a human using an image sensor and controlling a lighting fixture group, it reduces false detection of moving objects other than humans, and is reliable. An object of the present invention is to provide a lighting control system capable of performing high lighting control.
In addition, the present invention provides an illumination control system that reduces on / off of other lighting fixtures, on / off of a display such as a television, and false detection due to the movement of a curtain / blind as a moving object other than a human being. With the goal.

Therefore, an illumination system according to the present invention is an illumination system including a light source, an image sensor that detects an image, and a control unit that controls lighting of the light source according to image information from the image sensor. A storage unit that extracts and stores image information of a specific region from the image information of the image, and the control unit detects a change in luminance generated in the specific region from the output of the image sensor and the output of the storage unit. It is configured to track, calculate the control content of lighting of the light source based on the luminance change generated in the specific area, and control the lighting of the light source.
With this configuration, the change in luminance generated in the specific area is tracked among the detection results of the image sensor, the light source is controlled to be turned on according to this, and the change in luminance generated outside the specific area is canceled. By setting it as a human doorway, in other cases (TV ON, lighting reflected on the floor, brightness change of the window due to external light, projection of external light from the window onto the floor, curtain due to wind Malfunction due to fluctuations, etc.). Since the luminance change due to the movement of the curtain / blind near the window is not mistakenly recognized as the luminance change due to the movement of the person, it is possible to prevent the lighting apparatus from being erroneously turned on and to prevent the person from feeling uncomfortable. Moreover, since it is not necessary to consume wasteful power, the energy saving effect is also great.

  In the illumination system according to the present invention, the image information of the specific area includes image information related to a person such as position information or number information of a person output from the image sensor.

Further, in the illumination system according to the present invention, an area having a predetermined width around the specific area is set as an auxiliary specific area, and the storage unit is further configured to extract and store image information of the auxiliary specific area, Among the luminance changes generated in the specific area, it is determined whether or not it is a luminance change passing through the auxiliary specific area, and based on the determination result, lighting of the light source is controlled.
With this configuration, the storage unit defines an arbitrary surrounding region of the specific region as the auxiliary specific region, and the processing unit further includes a luminance change generated in the specific region among the detection results of the image sensor. Tracks changes in brightness through the auxiliary specific area, controls the lighting of the light source accordingly, and cancels brightness changes that occur in other areas, thus identifying people coming in and out of the sweep window and curtain fluctuations And false detection can be further suppressed.

In the illumination system according to the present invention, the light source is controlled to be turned on when it is detected that the detected luminance change has completely left the specific area among the luminance changes generated in the specific area. including.
According to this configuration, among the luminance changes generated in the specific area obtained by the output of the image sensor, the detected luminance change further detects the specific area, and the luminance change corresponds to the luminance change in the specific area. Since the lighting control is performed and the luminance change caused by other than that is canceled, it is possible to discriminate between the entrance and exit of the person at the sweep window and the fluctuation of the curtain, thereby further suppressing false detection.

Further, the present invention includes the illumination system, wherein the control unit is configured to cancel the luminance change when the luminance change is recognized only in a specific area.
According to this configuration, in the process of tracking the luminance change, if the luminance change does not move within a predetermined time, this luminance change is canceled, so that people entering and exiting the sweep window and curtain fluctuation are identified. And false detection can be further suppressed. In addition, by providing a time limit, control such as “control starts once when a luminance change occurs in a specific area, but is canceled if the luminance change does not move within a predetermined time period” is also possible. It becomes possible.

  In the illumination system according to the present invention, the specific region includes a door peripheral portion.

  In the illumination system according to the present invention, the specific region includes a peripheral region of the sweep window and a reachable range of the window shielding member.

Further, the present invention includes the above illumination system, wherein the window shielding member is a curtain / blind.
According to this configuration, in the detection area of the image sensor, the area when the window shielding member expands to the maximum in the substantially horizontal direction is set as the specific area, and the control content to be excluded from the sensing area is selected from the storage unit for a certain period of time. In addition, it is possible to prevent false detections other than people. With this configuration, since the luminance change due to the movement of the window shielding member such as the curtain / blind near the window is not mistakenly recognized as the luminance change due to the movement of the person, the lighting apparatus does not light up erroneously, and the person does not feel uncomfortable. . In addition, it is possible to perform comfortable lighting control without consuming unnecessary electric power, which leads to energy saving.
Further, it is possible to eliminate a luminance change caused by irregular curtain / blind movement and prevent erroneous recognition.

As described above, according to the present invention, the luminance change generated in the specific area is tracked among the detection results of the image sensor, and the light source is controlled to be turned on accordingly, and the luminance generated outside the specific area is detected. Since the change is canceled, a specific area is set as a human entrance and exit in other cases (TV ON, lighting reflected on the floor, brightness change of the window due to external light, from the window Malfunction caused by luminance change due to external light projection on the floor surface of the floor of the curtain, or the shake of the curtain due to wind, etc.) can be prevented.
Therefore, the movement of curtains / blinds other than humans, in particular, is not erroneously detected as humans, and the luminaire does not automatically respond to lighting / dimming to changes in brightness caused by movements of the curtains / blinds, etc. So people don't have to be uncomfortable.
In addition, unnecessary lighting is eliminated and energy is saved without consuming unnecessary power. In addition, by adding an alarm function, it can be used for detection of intrusion through a window, so that it is possible to enhance the crime prevention effect at night after going to bed or during absence.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)
FIG. 1 is an explanatory diagram showing an indoor situation using the illumination system according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram of this illumination system. As shown in FIG. 1, the lighting system has a luminance block that moves on a continuous image based on image information obtained by imaging using an image sensor (not shown) attached to a ceiling or the like. Only the information on the specific area is extracted so that the lighting control can be performed based only on the person information of M, and the information other than the specific area is canceled and stored in the storage unit 300 to prevent malfunction. It is characterized by that.
Thereby, lighting control of the light source can be performed based only on the human information that is a luminance block moving on the continuous image, and the luminance change due to the on / off of the TV T and the luminance change due to the movement of the curtain near the window are caused by the movement of the person We try not to misrecognize this as a change in brightness.

  As shown in the block diagram of FIG. 2, the illumination system includes a light source L, an image sensor 100 that detects an image, and a control unit 400 that controls lighting of the light source L according to image information from the image sensor 100. A storage unit 300 that extracts and stores image information of a specific region R from the image information of the image sensor 100, and a processing unit 200 that calculates control content. The unit 200 extracts information on the specific area from the image information and stores it in the storage unit 300, and tracks the luminance change generated in the specific area R from the output of the image sensor 100 and the output of the storage unit 300. The control content of lighting of the light source is calculated on the basis of the luminance change generated in the specific region R, and the lighting of the light source L is controlled. Here, the control content accompanying the luminance change is stored as control information in the storage unit 300 stored in advance, and is calculated by the processing unit 200 based on the output of the image sensor and the output of the storage unit 300. The controller 400 outputs and drives the lighting fixture 500.

  Then, the control content for blinking / dimming the lighting fixture is selected according to the image information related to the person such as the position information and the number of persons information output from the 100 image sensor, and the control signal is output to the control unit And the lighting fixture is controlled. In order to cancel the image information outside the specific area, the processing unit turns on the TV or reflects other illumination on the floor surface, changes in the luminance of the window surface due to external light, or external light from the window to the floor surface. It is possible to prevent malfunction caused by a change in luminance due to a projection, a shake of the curtain due to the wind, and the like.

  Next, the image sensor 100 is a camera using a solid-state imaging device such as a CCD image sensor or a CMOS image sensor, and a wide-angle lens, a fish-eye lens, or the like is used as a lens. Such a sensor outputs image information captured at predetermined time intervals. An analog signal of an image output from the image sensor is converted into a digital signal by A / D conversion in the processing unit 200. However, when a CMOS image sensor having a function of outputting a digital signal is used, A / D conversion in the processing unit 200 is not necessary. As an image captured by the image sensor, a color image can be used, but in this embodiment, a monochrome grayscale image is used. The time interval captured by the image sensor may be set as appropriate within a range in which the presence or absence of a moving object can be determined from time-series images obtained at the time interval.

  In addition, the image sensor 100 is often installed on the ceiling so that an indoor control area can be seen from above, but the image sensor 100 is not limited to this as long as it can achieve detection targeted by the present invention. It may be installed on the wall or floor. In addition to being installed alone, it may be integrated with the lighting fixture as a unit of the lighting fixture. Here, for example, it is installed alone on the ceiling near the center of the room. The control area that the image sensor should capture in the image can be arbitrarily set in advance by the user. Further, a specific area such as the vicinity of the door is set in the control area.

  The storage unit stores in advance control contents for blinking and dimming the lighting fixture in accordance with a pattern such as a person's occupancy position and the number of people. Further, even when a moving luminance mass M is generated by the procedure described later, it is determined that the person is not a person depending on whether the specific area is outside the specific area, and only the specific control area is canceled from the detection area. And stored as information for canceling normal lighting control. Although information other than the specific area is canceled here, the illumination control based on the information other than the specific area may be delayed for a predetermined time.

Next, the illumination control operation using the illumination system of the present embodiment will be described in detail.
FIG. 3 is a flowchart showing the control operation.
First, prior to shooting, a specific area is set with a remote controller or the like (step S1000). Then, the image sensor 100 always captures a bird's-eye view image of a specific control area in the room and generates image information (step S1001). Image information of a specific area is extracted from the generated image information (step S1002) and stored in the storage unit 300 in time series (step S1003). The processing unit 200 compares and analyzes the past image for a certain period of time and the currently captured image, and determines whether there is any movement in a certain luminance block (step S1004). If there is a movement in the specific control area, it is checked against the control content of the storage unit 300 (step S1005), and if it is recognized as a person, it is shown in FIGS. 1 (a) and 1 (b). Thus, the lighting control signal determined according to the person's residence position is transmitted to the control unit (step S1006), and the lighting fixture is blinked and dimmed (step S1007).

  When it is determined that a certain luminance block is a person, the trajectory is tracked and stored in the storage unit (step S1003), and it is determined whether or not it exists in the control area (step S1008). If the image sensor stops in the control area without exiting the control area to be captured in the image in this determination step S1008, it is determined that “in-room / stopped” (step S1009), and its position is also It is stored in the storage unit (step S1003).

  For example, in a room such as a living / dining room, a lighting load of a lighting fixture that illuminates the inside of the living / dining room can be considered, but the present invention is not limited to this application. In this type of application, when lighting equipment is turned on when entering a room, lighting of the lighting equipment is usually required as long as there are people in the room. There may be no need. In addition, it is required to turn off the luminaire in a relatively short time after leaving the room.

(Embodiment 2)
Next, a second embodiment of the present invention will be described.
FIG. 4 is an explanatory diagram showing an indoor situation using the illumination system according to the second embodiment of the present invention. In the first embodiment, the specific area R is set only in the vicinity of the door, but in the present embodiment, the specific area R is swept out and the first specific area R1 in the vicinity of the window and the second in the vicinity of the door. The specific region R2 is set to follow the luminance mass M appearing from the first and second specific regions, and the movement trajectory _Mre is also continuously stored in the storage unit 300.

Also in the present embodiment, the apparatus configuration shown in FIG. 2 is assumed as in the first embodiment. Further, the control operation is the same as the flowchart shown in FIG.
Prior to the control operation, the first and second specific regions R1 and R2 are set.

  As shown in FIG. 4A, the image information of the first and second specific areas R1, R2 is stored in the storage unit. Here, when a person enters from the door, the luminance change in the second specific region R2 is stored in the storage unit. Then, the calculation is performed by the processing unit 200, and there is a motion. If there is a luminance change in the second specific region R2, it is determined that the person is a person, and the lighting fixture L (500) is turned on. Here, the image information is also extracted for the first specific region R1, but there is no change in luminance.

Then, as shown in FIG. 4B, the person M who is a luminance block appearing from the first specific area is chased, and the movement locus M _re is also stored in the storage unit 300. Here, the trajectory is stored in the storage unit until it leaves the first or second specific area R1, R2. During this time, the lighting fixture L continues to be lit.

  Then, as shown in FIG. 4 (c), the person M, which is a mass of brightness appearing from the first specific area, goes out of the first or second specific area R1, R2, and there is a person in the control area. When it is confirmed that there is no light, the lighting fixture L is turned off. After this, even when the television T is turned on and there is a change in luminance, or when there is a change in luminance due to external light from the window W, neither of the specific regions R1 and R2 is canceled. The appliance L is continuously turned off.

  In addition, after it is confirmed that the person M, which is a lump of luminance appearing from the first specific area, has left the first or second specific area R1, R2 and no person is present in the control area, FIG. As shown in FIG. 4 (d), the specific region R1 is also obtained when there is a change in luminance due to reflection on the floor surface caused by the lighting of the downlight DL, or when the curtain C shakes and changes in luminance due to the wind. , R2, and therefore cancel processing is performed, and the lighting fixture L continues to be turned off during this time.

  In this way, the control content for blinking / dimming the lighting fixture is selected in accordance with the image information related to the person such as the position information and the number information of the person output from the image sensor 100, and the control is performed to the control unit. A signal is output to control the luminaire. In order to cancel image information outside the specific area by the processing unit, the TV is turned on, other lighting is reflected on the floor, the brightness of the window changes due to external light, and the projection of external light from the window onto the floor -It is possible to prevent malfunctions caused by changes in brightness due to curtain shake caused by wind.

  In this embodiment, when a person enters the room through the entrance (door) and the sweep window, the storage unit recognizes the positions of the entrance and the sweep window in advance, The control content for switching the switch circuit from OFF to ON is selected, and control is performed so as not to be uncomfortable without being lit despite the presence in the room.

(Embodiment 3)
FIGS. 5A to 5E are explanatory diagrams showing the lighting control according to the third embodiment of the present invention.
In the present embodiment, the lighting control is performed by dividing the room into two areas, the first control area RA and the second control area RB, in a state where area control is performed in a plurality of control areas. When a person enters the first control area RA, the switch circuit is switched from the storage unit on the assumption that a person already exists in the first control area RA and the person detection is determined. Since the content of control for switching from OFF to ON is selected, it is configured so that it does not become uncomfortable without being lit despite the presence in the room.

  Here, it is assumed that the image sensor is arranged at substantially the center of the ceiling, can detect the first and second control areas RA and RB, and two lighting fixtures L1 and L2 are arranged on the ceiling. The apparatus configuration of this lighting system is the same as that shown in FIG. 2, and the image sensor 100, the processing unit 200, the storage unit 300, and the lighting fixture 600 (L1, L2) communicate with each other via the control unit 400. Connected as possible.

  In FIG. 5A, when there is no person in the first control area RA and the second control area RB and the lighting fixtures L1 and L2 are in the extinguished state, the second specific area R2 The person M appears in the second control area RB, the luminance change occurs, the person is absent in the first control area RA, the lighting fixture L1 remains off, and the person is present in the second control area RB. By appearing, the lighting fixture L2 is turned on. The image sensor 100 is monitoring the designated first and b second control areas RA and RB.

  The first control area RA → the second control area RB (or the second control area) in a state where it is detected that a person is present in either the first control area RA or the second control area RB Content that priority is given to normal control (lighting) in the second control region RB when a person enters (from the RB to the first control region RA) (when motion is detected in the second control region RB). Set in advance.

Then, as shown in FIG. 5 (b), the person M who is a luminance block appearing from the second specific area is chased, and the movement trajectory M _re is also stored in the storage unit 300. Here, the trajectory is stored in the storage unit until it leaves the first or second specific area R1, R2. During this time, the lighting fixture L1 continues to be turned off, and the lighting fixture L2 is also kept on.

  Then, as shown in FIG. 5C, the person M, which is a luminance block appearing from the second specific area, enters the first control area RA, and the person disappears in the second control area RB. Is confirmed, the lighting fixture L2 is turned off and the lighting fixture L1 is turned on.

  Then, until it is confirmed that the person M, who is a lump of luminance that has entered the first control area RA, leaves the first specific area R1 and no one is in the first control area RA. As shown in FIG. 5D, the lighting fixture L2 is kept OFF and the lighting fixture L1 is kept on. At this time, even if there is a luminance change due to the reflection on the floor caused by the lighting of the downlight DL, even if the curtain C shakes and changes in luminance due to the wind, it is not one of the specific regions R1, R2. Cancellation processing is performed, and during this time, the lighting fixtures L1 and L2 are continuously turned on and off.

  Then, when it is confirmed that the person M, who is a mass of luminance that has entered the first control area RA, goes out of the first specific area R1 and there is no person in the first control area RA. As shown to 5 (e), the lighting fixture L1 will be OFF and the lighting fixture L2 will maintain an OFF state.

  In this way, when a person who is a luminance block enters from a specific area, reaches the specific area again, and the luminance block disappears (= exits), the control for the luminance block (= person) is terminated, The memory is also terminated. In this embodiment, since there is only one person in the target room, all the lights are turned off.

  In the present embodiment, the lighting equipment to be turned on is changed according to the position, but as in the second embodiment, a luminance lump (person) appearing from a specific area (entrance / exit) is chased, and the movement trajectory is also It keeps track of the luminance mass until it leaves the specific area, keeps track of the trajectory, and controls the illumination according to the current position and trajectory.

(Embodiment 4)
FIGS. 6A to 6D are explanatory diagrams showing the lighting control according to the fourth embodiment of the present invention.
In the present embodiment, an area having a predetermined width around a specific area is set as an auxiliary specific area, and the storage unit 300 is further configured to extract and store image information of the auxiliary specific area, which is generated in the specific area. It is determined whether or not the luminance change is a luminance change that passes through the auxiliary specific area, and the lighting of the light source is controlled based on the determination result.

Also in the present embodiment, the apparatus configuration shown in FIG. 2 is assumed as in the first embodiment. Further, the control operation is the same as the flowchart shown in FIG.
Prior to the control operation, first and second auxiliary specific regions R1S and R2S having a predetermined width are set in the first and second specific regions R1 and R2 and their peripheral edges, respectively. The first specific area R1 is a range in which the luminance change occurs due to the movement of the curtain C of the sweep window W0, and the first auxiliary specific area R1S is around the first specific area, so far the luminance change due to the movement of the curtain Does not reach.
Here, the first and second auxiliary specific areas are further set around the first and second specific areas (the sweep window and the entrance / exit), and the first and second specific areas, the first and second auxiliary specific areas are set. Only the luminance change block that moves to the other area (= indoor) is detected. Then, the first and second auxiliary specific areas are set, and the luminance change cluster moves to the first and second specific areas, the first and second auxiliary specific areas, and the other areas (= indoors). Control is not performed (cancel processing) until it is detected.

As shown in FIG. 6A, consider the case where only the curtain C of the sweep-out window W0 has moved in the absence of a person. At this time, the image information of the first and second specific areas R1, R2 and the first and second auxiliary specific areas R1S, R2S is stored in the storage unit. Here, there is a luminance change caused by the movement of the curtain C of the sweep window W0 set in the first specific region R1, but the luminance change is further referred to by referring to the image information of the first auxiliary specific region R1S. Determine the presence or absence. And since the brightness | luminance change produced by the curtain C moving is not in 1st auxiliary | assistant specific area | region R1S, it is canceled and control is not performed. Therefore, the lighting fixture L remains OFF.
As shown in FIG. 6 (b), even when the sweep window W0 set in the first specific region R1 changes in luminance due to external light, the luminance change does not enter the first auxiliary specific region. Therefore, control is not performed and cancel processing is performed.
As shown in FIG. 6C, consider a case where a luminance block (person M) appears in the sweep window W0 set in the first specific region R1. At this time, even if a luminance block appears in the first specific region R1, there is no luminance change in the surrounding first auxiliary specific region R1S. To do.
Then, as shown in FIG. 6D, when the luminance block (person M) appearing in the sweep window W0 set in the first specific area R1 reaches the first auxiliary specific area R1S, Recognizing that there is, turn on the luminaire L and start the control.

  In this way, the control content for blinking / dimming the lighting fixture is selected in accordance with the image information related to the person such as the position information and the number information of the person output from the image sensor 100, and the control is performed to the control unit. A signal is output to control the luminaire. In order to cancel image information outside the specific area by the processing unit, the TV is turned on, other lighting is reflected on the floor, the luminance of the window changes due to external light, and the projection of external light from the window onto the floor Alternatively, it is possible to prevent malfunction caused by a change in luminance due to a curtain shake caused by wind.

In the present embodiment, when a person enters the room through the entrance (door) and the sweep window, the storage unit recognizes the position of the entrance and the sweep window and the auxiliary specific area around the surrounding area in advance. In the case of intrusion from the entrance, the control content for switching the switch circuit from off to on is selected, and it is possible to control so as not to become uncomfortable without being lit despite being in the room. it can.
By controlling the lighting using the concept of the auxiliary specific area in this way, for example, as shown in FIG. 7A, external light has entered from the discharge window W0 set in the first specific area R1 and is applied to the floor surface. Due to the brightness change caused by the reflection, the luminaire L does not turn on due to a malfunction even though the person is absent.
Further, as shown in FIG. 7B, the luminance change caused by the movement of the sweep window curtain C set in the specific area is introduced into the second specific area by introducing the concept of the second specific area. By referring to the presence or absence of the luminance change, it can be determined whether or not it is caused by the presence of a person, and a malfunction can be performed.

The width of the specific area or the auxiliary specific area can be set as appropriate. For example, as shown in FIG. 8A, when the luminance mass M reaches the auxiliary specific area RS from the specific area R, it recognizes that it is a person and starts control.
In order to reduce noise caused by a large luminance block such as a curtain, as shown in FIG. 8B, the specific region R is set large so that the luminance change due to the curtain does not reach and the luminance block M is specified. When it reaches the auxiliary specific area RS from the area R, it recognizes that it is a person and starts control. In this case, since the luminance change due to the curtain does not reach the auxiliary specific region RS, malfunction can be eliminated.
Further, at this time, as shown in FIG. 8C, when turning back before reaching the auxiliary specific area, it is not controlled and can be kept unlit.

(Embodiment 5)
FIGS. 9A to 9B are conceptual explanatory diagrams showing lighting control according to the fifth embodiment of the present invention.
In the present embodiment, the auxiliary specific area is not provided, but the malfunction is prevented by starting the control only when completely away from the specific area.
That is, as shown in FIG. 9A, the control is started by recognizing that the user is a person only when the luminance block M is completely separated from the specific region R. As a result, it is possible to reduce noise caused by a large luminance block such as a curtain. However, as shown in FIG. 9 (b), the control is started when the vehicle is completely separated from the specific region R. Therefore, the control is performed even when the vehicle does not enter the turn-back control region, that is, the room. It becomes.

This embodiment will be specifically described.
Also in the present embodiment, the apparatus configuration shown in FIG. 2 is assumed as in the first embodiment. Also, the control operation is substantially the same as the flowchart shown in FIG.
Here, the first and second specific areas (sweep window, entrance / exit) are set, and control is not performed (cancellation processing is performed) until the luminance lump completely leaves the first and second specific areas. The control is started only when leaving.

As shown in FIG. 10 (a), consider the case where only the curtain C of the sweep window W0 moves in the absence of a person. At this time, the image information of the first and second specific areas R1 and R2 is stored in the storage unit. Here, there is a luminance change caused by the movement of the curtain C of the sweep window W0 set in the first specific area R1, but the luminance change caused by the movement of the curtain C is completely in the first specific area R1. Since it is not away, it is canceled and no control is performed. Therefore, the lighting fixture L remains OFF.
As shown in FIG. 10B, even when the sweep window W0 set in the first specific region R1 changes in luminance due to external light, the luminance change does not completely pass through the first specific region R1. Therefore, the control is not performed and the cancel process is performed.
As shown in FIG. 10C, consider a case where a luminance block (person M) appears in the sweep window W0 set in the first specific region R1. At this time, even if a luminance block appears in the first specific region R1, if it is in the first specific region R1, here, the control is not performed by the luminance change, and the data is canceled.
Then, as shown in FIG. 10 (d), when the luminance block (person M) appearing in the sweep window W0 set in the first specific area R1 completely appears in the first specific area R1, The lighting apparatus L is turned on, and control is started.

  In this way, the control content for blinking / dimming the lighting fixture is selected in accordance with the image information related to the person such as the position information and the number information of the person output from the image sensor 100, and the control is performed to the control unit. A signal is output to control the luminaire. In order to cancel image information outside the specific area by the processing unit, the TV is turned on, other lighting is reflected on the floor, the brightness of the window changes due to external light, and the projection of external light from the window onto the floor -It is possible to prevent malfunctions caused by changes in brightness due to curtain shake caused by wind.

  In the first to fifth embodiments, when the luminance change does not move within a predetermined time in the process of tracking the luminance change, the luminance change may be canceled. When the brightness change does not move within a predetermined time during the process of tracking the brightness, the brightness change is canceled, so it is possible to discriminate between the person entering and exiting the sweep window and the curtain fluctuation, and false detection. Further suppression can be achieved. In addition, by providing a time limit, control is started once when a luminance change occurs in a specific area, but if the luminance change does not move within a predetermined time, control can be canceled. Become. Here, the change in luminance within a certain time refers to a movement until reaching the auxiliary specific area within a certain time or a movement until the specific area is completely separated within a certain time.

  In addition, this invention is not limited to the structure of the said embodiment, It can utilize also as a suspicious person detection apparatus in the system which monitors whether there is a suspicious person's invasion in a room | chamber interior. For example, by switching from normal control to security mode, if a suspicious person enters the room through a window after going to bed at night or while absent, the lighting equipment will turn on, an alarm sound will sound, Actions such as reporting to residents can be generated.

Explanatory drawing which shows the illumination system of Embodiment 1 of this invention. The block diagram which shows the illumination system of Embodiment 1 of this invention The flowchart figure which shows the control action of the illumination system of Embodiment 1 of this invention. Explanatory drawing which shows the illumination system of Embodiment 2 of this invention. Explanatory drawing which shows the illumination system of Embodiment 3 of this invention. Explanatory drawing which shows the illumination system of Embodiment 4 of this invention. Explanatory drawing which shows the illumination system of Embodiment 4 of this invention. Explanatory drawing which shows the concept of the illumination system of Embodiment 4 of this invention. Explanatory drawing which shows the concept of the illumination system of Embodiment 5 of this invention. Explanatory drawing which shows the illumination system of Embodiment 6 of this invention. Explanatory drawing which shows the illumination system of a prior art example

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Image sensor 200 Processing part 300 Memory | storage part 400 Control part 500 Lighting fixture C Curtain L, L1, L2 Lighting fixture

Claims (8)

A light source;
An image sensor for detecting an image;
A lighting system including a control unit that controls lighting of a light source according to image information from the image sensor,
A storage unit for extracting and storing image information of a specific area from the image information of the image sensor;
The control unit tracks a change in luminance generated in a specific area from the output of the image sensor and the output of the storage unit, and determines the control content of lighting of the light source based on the luminance change generated in the specific area. An illumination system configured to calculate and control lighting of the light source. The lighting system according to claim 1,
The lighting system, wherein the image information of the specific area is image information related to a person such as position information or number information of a person output from the image sensor. The illumination system according to claim 1 or 2,
An area having a predetermined width around the specific area is set as an auxiliary specific area,
The storage unit is further configured to extract and store image information of the auxiliary specific area,
An illumination system configured to determine whether or not the luminance change generated in the specific area is a luminance change via the auxiliary specific area, and to control lighting of the light source based on the determination result. The illumination system according to any one of claims 1 to 3,
An illumination system that controls lighting of the light source when it is detected that the detected luminance change has completely left the specific area among the luminance changes generated in the specific area. The illumination system according to any one of claims 1 to 4,
The said control part is an illumination system comprised so that the said brightness change may be canceled when the said brightness change is recognized only within a specific area | region. The illumination system according to any one of claims 1 to 5,
The specific area is an illumination system that is a door periphery. The illumination system according to claim 6,
The said specific area is a surrounding area of a sweep-out window, Comprising: The illumination system which is the reach | attainment range of a window shielding member. The illumination system according to claim 7,
The lighting system in which the window shielding member is a curtain / blind.

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