JP2014154068A - Moving body detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a moving body detection device capable of setting detection range information for setting a detection range easily even without confirming an image of an imaging part by a display device.SOLUTION: A memory 13 stores detection range information for setting which range is made to be a detection range for detecting presence/absence of a moving body in an imaging range of an image sensor 11. An image processing circuit 12 determines whether or not a moving body exist in the detection region by analyzing a plurality of images imaged by the image sensor 11 at different time, in the detection range set by the detection range information. Also, the image processing circuit 12 detects a specific temporal change from the image of the image sensor 11 when an instruction for setting the detection range information is input from the outside, determines the detection range information based on the position where the specific temporal change has been detected, and makes the memory 13 store it.

Description

  The present invention relates to a moving object detection apparatus.

  2. Description of the Related Art Conventionally, there has been proposed an illumination control system that uses an image sensor such as a CCD image sensor or a CMOS image sensor to automatically turn on a luminaire when it detects that a person has entered the visual field of the image sensor (for example, Patent Document 1). reference).

JP 2011-108417 A

  In the above-described lighting control system, if the imaging range of the image sensor deviates from the range assumed at the design stage due to errors during manufacturing or installation, the detection range set in the image of the image sensor may be the presence or absence of a person in real space. There was a possibility of deviating from the detection range to detect. When the detection range deviates from the desired range, the human body is detected because it is outside the desired detection range but is within the imaging range of the image sensor, or the human body exists in the desired detection range, Since it is outside the imaging range, the human body may not be detected.

  In order to adjust the imaging range of the image sensor, the attachment position and angle of the image sensor may be adjusted while confirming an image captured by the image sensor on a monitor provided outside. However, in order to check the image of the image sensor on an external monitor, a function for outputting image data from the image sensor to the outside and a function for transmitting the output image data to an external monitor are required, which increases costs. There was a problem of becoming.

  The present invention has been made in view of the above problems, and the object of the present invention is to easily set detection range information for setting a detection range without checking the image of the imaging unit with a display device. It is in providing the moving body detection apparatus which can be performed.

  The moving object detection device of the present invention includes a camera, a memory, a determination unit, an output unit, and a setting unit. The camera images the space to be detected. The memory stores detection range information for setting which range is the detection range for detecting the presence or absence of a moving object in the imaging range of the camera. The determination unit determines whether there is a moving object in the detection range by analyzing a plurality of images captured by the camera at different times in the detection range set by the detection range information. The output unit outputs at least one of the determination result of the determination unit and the control information of the external device derived from the determination result to the outside. When an instruction to set the detection range information is input from the outside, the setting unit detects a specific temporal change from the camera image, and detects the detection range information based on the position where the specific temporal change is detected. Determine and store in memory.

  In this moving body detection apparatus, the specific temporal change is preferably an image change caused by a periodic light-dark change.

  In this moving object detection apparatus, the specific temporal change is preferably an image change generated by a predetermined operation performed by the object.

  In this moving body detection device, the setting unit corrects the position of the detection range so that the position where the specific temporal change is detected matches the center of the detection range, and sets detection range information for setting the corrected detection range. It is also preferable to store in a memory.

  In this moving body detection apparatus, it is preferable that the setting unit once detects a specific temporal change and sets the detection range information, and thereafter stops the operation of detecting the specific temporal change.

  In this moving body detection apparatus, the imaging range of the camera is divided into a plurality of small areas by a grid-like boundary line, and whether or not each of the plurality of small areas is included in the detection range is set by the detection range information. . And a setting part determines the detection range information which shows whether a small area is included in a detection range with respect to the small area where the center is the closest to the position where the specific temporal change was detected, and memorize | stores it in memory It is also preferable.

  In this moving body detection device, when the setting unit changes the detection range information indicating whether or not to include the small area in the detection range, it is also preferable to output the detection range setting status set by the detection range information to the outside. .

  In this moving object detection device, the specific temporal change is a change in an image caused by the movement of an object, and the setting unit receives a setting end instruction after receiving an instruction to set detection range information. It is also preferable to set the detection range inside the movement locus of the detected object.

  According to the present invention, when the detection range information is set, if the person who performs the setting operation causes a specific temporal change at a position serving as a reference of the detection range in the real space, the setting unit specifies from the image of the camera. Is detected, and detection range information is set based on the position. Therefore, the position of the detection range can be adjusted without checking the camera image on an external monitor, and the function of outputting the camera image to the outside and the function of transmitting the output image data to the monitor are no longer necessary. A low-cost moving object detection device can be realized.

It is a system block diagram of the illumination control system using the moving body detection apparatus of this embodiment. It is the figure which showed typically the image imaged with the image sensor same as the above. The detection range by a moving body detection apparatus same as the above is shown, (a) is the figure seen from the horizontal direction, (b) is the figure seen from the upper side. (A) (b) is a figure explaining the specific temporal change detected at the time of the setting of detection range information in a moving body detection apparatus same as the above. It is a system block diagram of another illumination control system using the moving body detection apparatus same as the above. (A) (b) is explanatory drawing explaining the setting method of a detection range. It is explanatory drawing of the example of a display displayed on the display part of a remote control terminal. (A) (b) is explanatory drawing explaining the setting method of a detection range. (A)-(c) is explanatory drawing explaining another setting method of a detection range. (A) (b) is a system configuration | structure figure of the other system using the moving body detection apparatus same as the above.

  Hereinafter, an embodiment in which the moving object detection device according to the present invention is applied to an illumination control system that controls lighting / extinction of a lighting fixture will be described with reference to FIGS. 1 to 9. The lighting control system according to the present embodiment is used, for example, to control lighting / extinguishing of a plurality of lighting fixtures installed on the ceiling of an office area in an office.

  FIG. 1 is a block diagram illustrating the overall configuration of the illumination control system. The illumination control system includes a moving object detection device 1, an illumination control device 2, and a plurality of illumination fixtures 3. In addition, since the number and arrangement | positioning of the lighting fixture 3 differ with the area | regions of illumination object, they can be changed suitably.

  Each of the plurality of lighting fixtures 3 includes, for example, a fluorescent lamp or an LED as a light source. The plurality of lighting fixtures 3 are installed on the ceiling above the work area so that the same work area in the office can be illuminated. Lighting / extinguishing of each lighting fixture 3 is controlled by the lighting control device 2.

  The lighting control device 2 controls lighting / extinguishing of a plurality of lighting fixtures that illuminate the same work area according to the determination result of the moving object detection device 1. That is, when the moving body detection device 1 detects a moving object (human body), the lighting control device 2 turns on all of the plurality of lighting fixtures 3 that illuminate the same work area. On the other hand, if the moving body detection device 1 does not detect a moving object (such as a human body), the lighting control device 2 turns off all the plurality of lighting fixtures 3 that illuminate the same work area.

  Next, the moving body detection apparatus 1 will be described. The moving body detection device 1 includes an image sensor 11, an image processing circuit 12, a memory 13, and a communication circuit 14.

  The image sensor 11 is composed of, for example, a CCD image sensor, periodically captures an imaging region including an illumination range by a plurality of lighting fixtures 3, and outputs image data to the image processing circuit 12. The image sensor 11 of the moving object detection device 1 is installed at a position where the illumination range of the plurality of lighting fixtures 3 is included in the imaging range of the image sensor 11. In this embodiment, the camera is a CCD image sensor, but the camera is not limited to a CCD image sensor, and may be an image sensor such as a CMOS image sensor.

  The image processing circuit 12 is configured using, for example, a processor for image processing, and an object (such as a human body) moving within a predetermined detection range is analyzed by analyzing a plurality of images captured by the image sensor 11 at different times. Determine if it exists. The image processing circuit 12 detects a moving object by using a conventionally known image processing method such as a background difference method or an inter-frame difference method, and the description of the detection method is omitted.

  The memory 13 is composed of a nonvolatile memory such as an EEPROM or a flash memory, for example, and a detection range for setting a detection range for detecting the presence or absence of a moving object in the imaging range of the image sensor 11. Store information.

  The communication circuit 14 performs data communication with the illumination control device 2 via a communication line. Note that communication between the communication circuit 14 and the illumination control device 2 is not limited to wired communication, and may be wireless communication.

  Next, the operation of this system will be described.

  When the image processing circuit 12 and the illumination control device 2 start operation, first, the image processing circuit 12 determines whether or not there is a moving object in the imaging range by the image sensor 11 based on the detection range information read from the memory 13. Set the detection range to be detected.

  The image sensor 11 of the moving body detection device 1 periodically captures an imaging range and outputs image data to the image processing circuit 12.

  When the image sensor 11 periodically captures the imaging region and outputs the image data to the image processing circuit 12, the image processing circuit 12 analyzes the image data captured at different times, so that the above detection range can be obtained. It is determined whether or not there is a moving object, and an object that is not suitable as an object to be detected is excluded from preset size and speed conditions. In the indoor lighting control, the object to be detected is a person, and even if the movement stops due to sitting or the like, it is determined that the person exists by analyzing the correlation of the image before the stop.

  When it is determined that there is a person, the image processing circuit 12 transmits a lighting control signal for lighting the lighting fixture 3 from the communication circuit 14 to the lighting control device 2. When the lighting control device 2 receives the lighting control signal transmitted from the moving object detection device 1, the lighting control device 2 turns on all of the plurality of lighting fixtures 3.

  On the other hand, when the image processing circuit 12 determines that there is no person, the image processing circuit 12 transmits a turn-off control signal for turning off the lighting fixture 3 from the communication circuit 14 to the lighting control device 2. When the lighting control device 2 receives the lighting control signal transmitted from the moving object detection device 1, the lighting control device 2 turns off all the plurality of lighting fixtures 3.

  Thereby, when a person is detected in the detection range, all the lighting fixtures 3 are turned on, and when no person is detected in the detection range, all the lighting fixtures 3 are turned off. In the present embodiment, the image processing circuit 12 and the communication circuit 14 constitute an output unit. The image processing circuit 12 creates control information (lighting control signal or light extinguishing control signal) of the luminaire 3 that is an external device from the result of determining the presence or absence of a moving object, and this control information is transmitted from the communication circuit 14. Although it is output, the result of determining the presence or absence of an object may be output.

  Next, the image processing circuit 12 as a setting unit detects a specific temporal change from the image captured by the image sensor 11, and determines detection range information based on the detected specific temporal change. The operation stored in the memory 13 will be described.

  FIG. 2 shows an image P <b> 1 captured by the image sensor 11 of the moving object detection apparatus 1. The imaging range P1 by the image sensor 11 is determined by the optical system, and images a range wider than the detection range A3 (a range surrounded by a dotted line in FIG. 2) in which the presence or absence of a moving object is determined. The memory 13 stores detection range information for setting a detection range in the imaging range of the image sensor 11, and detects such that the center position of the imaging range coincides with the center position of the detection range. Range information is registered as an initial value.

  By the way, if the optical axis of the image sensor is shifted due to an error when the image sensor 11 is incorporated into the case of the moving object detection device 1 or an error when the moving object detection device 1 is installed on the ceiling, the imaging range of the image sensor 11 will be described. May deviate from the range planned at the time of design. FIG. 3A shows the imaging range of the image sensor 11. When the optical axis of the image sensor 11 is shifted from the axis L1 in the figure to the axis L2 due to an error in manufacturing the image sensor 11 or an error in mounting the moving object detection device 1. The imaging range of the image sensor 11 shifts, and the detection range shifts accordingly. FIG. 3B shows a detection range set within the imaging range of the image sensor 11, and when the optical axis shifts from the axis L1 to the axis L2, the center position of the detection range shifts from the point C1 to the point C2, and the detection range. Shifts from a detection range A1 indicated by a dotted line to a detection range A2 indicated by a solid line.

  As described above, if the detection range is not corrected in a state where the moving object detection device 1 is installed, the detection range for detecting a moving object may deviate from a desired range. In this embodiment, when the moving object detection device 1 and the illumination control device 2 are connected via a communication line at the time of construction, and the power is supplied to the moving object detection device 1 and the illumination control device 2, an instruction to set detection range information ( Setting command) is transmitted from the illumination control device 2 which is an external device to the moving object detection device 1. When this setting command is received by the communication circuit 14 of the moving object detection apparatus 1 and output to the image processing circuit 12 as a setting unit, the image processing circuit 12 reads the detection range information from the memory 13 and corrects this detection range information. The operation to start is started.

  The image processing circuit 12 sequentially captures image data periodically captured by the image sensor 11 and analyzes a plurality of images captured at different times, thereby identifying a change in the image caused by a periodic light-dark change. It is detected as "temporal change of".

  FIG. 4A shows an outline of the setting work, and the person H1 who performs the setting work stands at the center position of the range to be set as the detection range and turns the light source 4 (for example, the screen of a notebook computer) on a predetermined cycle or Flicker with a pattern. The period in which the image sensor 11 captures an image is set to a period shorter than the period in which the person H1 blinks the light source 4 (for example, about 0.5 seconds to several seconds). Therefore, the image processing circuit 12 can acquire an image when the light source 4 is turned on and an image when the light source 4 is turned off. By analyzing a plurality of images taken by the image sensor 11, the image processing circuit 12 is relatively short. It is possible to detect a position where the illuminance changes in a cycle (for example, about several seconds).

  When the image processing circuit 12 detects a periodic brightness change as a specific temporal change, the image processing circuit 12 corrects the detection range so that the position where the periodic brightness change is detected becomes the center position of the detection range. Detection range information indicating the detection range is stored in the memory 13.

  Thereafter, the image processing circuit 12 periodically captures images from the image sensor 11 and sequentially analyzes whether or not there is a moving object in the detection range by analyzing a plurality of images captured at different times. Then, a control instruction is output to the illumination control device 2 according to the determination result. When the image processing circuit 12 determines that a moving object exists in the detection range, the image processing circuit 12 outputs a lighting control signal to the lighting control device 2, and the lighting control device 2 collects all the lighting fixtures 3 at once. Light up. On the other hand, when the image processing circuit 12 determines that there is no moving object in the detection range, the image processing circuit 12 outputs a turn-off control signal to the lighting control device 2, and the lighting control device 2 outputs all the lighting fixtures 3. Turn off all at once. Thereby, lighting / extinguishing of the lighting fixture 3 is controlled according to the result in which the moving body detection apparatus 1 detected the presence or absence of the moving object in the detection range.

  As described above, the moving object detection device 1 according to the present embodiment includes the camera (image sensor 11), the memory 13, the determination unit, the output unit, and the setting unit. In the present embodiment, the image processing circuit 12 constitutes a determination unit and a setting unit, and the image processing circuit 12 and the communication circuit 14 constitute an output unit.

  The image sensor 11 images the detection target space. The memory 13 stores detection range information for setting a detection range for detecting the presence or absence of a moving object in the captured image of the image sensor 11. The image processing circuit 12 as the determination unit analyzes whether or not there is a moving object in the detection range by analyzing a plurality of images captured by the image sensor 11 at different times in the detection range set by the detection range information. Determine whether. The image processing circuit 12 as an output unit outputs at least one of the determination result of whether there is a moving object and the control information of the external device derived from the determination result from the communication circuit 14 to the outside. To output. When an instruction to set detection range information is input from the outside, the image processing circuit 12 serving as a setting unit detects a specific temporal change from the image of the image sensor 11, and a position where the specific temporal change is detected. Based on this, detection range information is determined and stored in the memory 13.

  When setting the detection range information, if the person who performs the setting operation causes a specific temporal change at a position (for example, the center position of the detection range) in the real space, the image processing circuit 12 serving as the setting unit A specific temporal change is detected from the image of the image sensor 11, and detection range information is set based on the position. Therefore, the detection range information for setting the detection range can be easily set without checking the image of the image sensor 11 on an external monitor, and the person (moving object) outside the desired detection range can be set. It is possible to reduce false detection and detection omission of a person within the detection range. In addition, the function of outputting the image data of the image sensor 11 to the outside and the function of transmitting the output image data to an external monitor are unnecessary, and the moving object detection is easy to change the detection range information at a low cost. The device 1 can be realized.

  Further, the image processing circuit 12 as the setting unit corrects the position of the detection range so that the position where the specific temporal change is detected matches the center of the detection range, and sets the detection range after correction. Information is stored in the memory 13.

  As a result, if a specific temporal change occurs at the position that becomes the center of the detection range in the real space, the position that becomes the center of the detection range on the image matches the position that becomes the center of the detection range in the real space. Therefore, the operation of setting the center of the detection range can be easily performed.

  Further, the image processing circuit 12 as the setting unit detects a specific temporal change from the image of the image sensor 11 after the detection range information setting command is input from the outside, and sets the detection range information. Thereafter, the operation for detecting a specific temporal change is stopped. Thus, when the detection range information is set, a specific temporal change is detected in the image of the image sensor 11, and after the detection range information is once set, the specific temporal change appears again in the image of the image sensor 11. Even if this is the case, the detection range information will not be changed by mistake.

  In the above-described embodiment, the presence or absence of a moving object is detected in the entire detection range A3 shown in FIG. 2, but the region A3 is divided into a plurality of small regions SA1 by a grid-like boundary line L10. Whether or not each of the plurality of small areas SA1 is included in the detection range may be set in advance. Then, the image processing circuit 12 sets detection range information so that the center position of the detection range set in this way matches the position where a specific temporal change is detected, and based on this detection range information. The detection range may be centered.

  In the above-described embodiment, the image processing circuit 12 as the setting unit detects a change in the image caused by a periodic brightness change as a specific temporal change when setting the detection range information. As a result, the person performing the setting work stands at the center of the detection range, and the screen of the mobile terminal (notebook computer, smart phone, tablet terminal, etc.) flashes or the portable light flashes. Thus, the center position of the detection range can be easily set.

  The specific temporal change detected when the image processing circuit 12 as the setting unit sets the detection range information is not limited to an image change caused by a periodic light / dark change, and an object (for example, a person) is detected. You may detect the change of the image which generate | occur | produces by the predetermined | prescribed operation | movement to perform. The predetermined operation performed by the object (that is, the person who performs the setting work) is preferably a simple operation that can be distinguished from other operations. For example, as shown in FIG. You may detect the operation | movement which rotates an arm so that a circle may be drawn. In this case, when a setting command is given from the external device to the moving object detection device 1, the person H1 who performs the setting operation performs an operation of turning his / her arm so as to draw a circle at the center of the detection range in the real space. This operation causes a temporal change in the image of the image sensor 11. The image processing circuit 12 analyzes a plurality of images taken by the image sensor 11 at different times, and detects temporal changes that appear in the image when the person H1 turns his arm. Then, the image processing circuit 12 changes the setting of the detection range (that is, detection range information) so that the position where the specific temporal change is detected in the image of the image sensor 11 is set as the center position of the detection range. Thus, detection range information for setting the detection range can be easily set without checking the image of the image sensor 11 on a display monitor or the like. Therefore, it is possible to reduce erroneous detection of a person (moving object) outside the desired detection range and detection failure of a person within the detection range. In addition, the function of outputting the image data of the image sensor 11 to the outside and the function of transmitting the output image data to an external monitor are unnecessary, and the moving object detection is easy to change the detection range information at a low cost. The device 1 can be realized.

  The operation detected by the image processing circuit 12 serving as the setting unit as a specific temporal change is not limited to the operation of turning the arm so as to draw a circle. It may be a motion to swing left and right.

  By the way, in this embodiment, although the instruction | indication (setting command) which sets detection range information is given to the moving body detection apparatus 1 from the illumination control apparatus 2, the remote control terminal which transmits / receives a wireless signal between the moving body detection apparatuses 1 is provided. A setting command may be given to the moving object detection device 1.

  FIG. 5 is a system configuration diagram in the case where the remote control terminal 5 is used. The moving body detection device 1 wirelessly communicates with the remote control terminal 5 in addition to the first communication circuit 14 that performs communication with the illumination control device 2. A second communication circuit 15 for transmitting and receiving signals (for example, radio signals) is provided. The second communication circuit 15 is a low-power wireless communication module, and transmits and receives communication signals using radio waves as a medium. Since the second communication circuit 15 is the same as the moving object detection device 1 described with reference to FIG. 1 except that the second communication circuit 15 is added, common components are denoted by the same reference numerals and description thereof is omitted. To do.

  The remote control terminal 5 includes a plurality of operation buttons 51 for performing various operations, and wirelessly transmits a signal corresponding to the operation of the operation button 51 to the moving object detection device 1 using a wireless signal (for example, a radio wave signal). In addition, the remote control terminal 5 includes a display unit 52 made of, for example, a liquid crystal display.

  Although wireless communication using radio waves as a medium is performed between the moving object detection device 1 and the remote control terminal 5, wireless communication may be performed using light such as infrared rays or ultrasonic waves as a medium.

  Here, when the person who performs the setting operation performs an operation for starting the setting of the detection range information using the remote control terminal 5, an instruction (setting command) for setting the detection range information is detected from the remote control terminal 5. A wireless signal is transmitted to the device 1.

  At this time, the setting command transmitted from the remote control terminal 5 is received by the second communication circuit 15 and sent from the second communication circuit 15 to the image processing circuit 12. When the setting command is input from the second communication circuit 15, the image processing circuit 12 starts setting the detection range information, and detects a specific temporal change from the image captured by the image sensor 11 as described above. The detection range information is set based on the position where a specific temporal change is detected.

  Here, as shown in FIG. 6A, the imaging range P1 of the image sensor 11 is divided into a plurality of small areas SA1 by a grid-like boundary line L21, and each of the plurality of small areas SA1 is included in the detection range. If it can be set whether or not, the detection range is set as follows.

  For example, when detecting a change in an image due to a change in brightness as a specific temporal change, the person H1 who performs the setting operation moves to a small area SA1 to be excluded from the detection range as shown in FIG. To blink the light source 4. When the image processing circuit 12 detects a specific temporal change from the image of the image sensor 11 (an image change due to a light-dark change), the image processing circuit 12 detects a small area SA1 whose center is closest to the position where the specific temporal change is detected. The detection range information is set so that the detection range information is not included, and the detection range information is stored in the memory 13. In the example of FIG. 6, when the person H1 blinks the light source 4 in the small area SA1 located in the upper left corner of the imaging range P1, as shown in FIG. 6B, the small center closest to the position where the light / dark change is detected. Area SA1 is removed from the detection range. In FIG. 6B, a hatched small area SA1 indicates a small area that is not included in the detection range.

  Then, after the person who performs the setting operation performs the operation of blinking the light source in all the small areas that are desired to be excluded from the detection range, the remote control terminal 5 is used to end the detection range information setting operation. A setting end instruction is transmitted from the remote control terminal 5 to the moving object detection apparatus 1. The setting end instruction transmitted from the remote control terminal 5 is received by the second communication circuit 15 and sent from the second communication circuit 15 to the image processing circuit 12. Upon receiving the setting end instruction, the image processing circuit 12 ends the detection range information setting operation, and the detection status setting state set by the detection range information registered in the memory 13 is transmitted from the second communication circuit 15 to the remote controller. Transmit to terminal 5. Upon receiving the detection range setting status transmitted from the moving object detection device 1, the remote control terminal 5 displays the detection range setting status on the display unit 52 as shown in FIG. Can be confirmed. Note that the detection range displayed in FIG. 7 is an example, and the small area SA1 hatched in FIG. 7 is excluded from the detection range.

  Incidentally, the image processing circuit 12 detects a change in the image due to a change in brightness as a specific temporal change, but may detect a change in the image generated by a predetermined operation performed by an object (for example, a person). The predetermined operation performed by the object (person who performs the setting operation) is preferably a simple operation that can be distinguished from other operations. For example, as shown in FIG. The movement of turning the arm so as to draw may be detected.

  The person H1 who performs the setting work moves to the small area SA1 to be removed from the detection range as shown in FIG. 8A, and performs an operation of turning his / her arm at the place. When the image processing circuit 12 detects a change in the image generated by performing a predetermined operation from the image of the image sensor 11, the detection range does not include the small area SA1 whose center is closest to the position. Information is set, and detection range information is stored in the memory 13. As shown in FIG. 8 (a), when the person H1 performs an action of turning his / her arm in the small area SA1 located in the upper left corner of the imaging range P1, as shown in FIG. 8 (b), the light / dark change is detected. The small area SA1 having the closest center is removed from the detection range. In FIG. 8B, the hatched small area SA1 indicates a small area that is not included in the detection range.

  Then, after the person who performs the setting operation performs an operation of turning his arm in all the small areas to be removed from the detection range, and performs an operation to end the detection range information setting operation using the remote control terminal 5, An end instruction is transmitted from the remote control terminal 5 to the moving object detection apparatus 1. The setting end instruction transmitted from the remote control terminal 5 is received by the second communication circuit 15 and sent from the second communication circuit 15 to the image processing circuit 12. Upon receiving the setting end instruction, the image processing circuit 12 ends the detection range information setting operation, and the detection status setting state set by the detection range information registered in the memory 13 is transmitted from the second communication circuit 15 to the remote controller. Transmit to terminal 5. When the remote control terminal 5 receives the detection range setting status transmitted from the moving object detection device 1, the remote control terminal 5 displays the detection range setting status on the display unit 52, and can visually check the detection range setting status. Yes (see FIG. 7).

  The image processing circuit 12 excludes the small area SA1 whose center is closest to the position where the specific temporal change is detected from the detection range, but the center is closest to the position where the specific temporal change is detected. The detection range information may be set so that the small area SA1 is included in the detection range.

  In addition, the image processing circuit 12 detects a change in the image caused by the movement of the object as a specific temporal change, and sets the detection range information so that the inside of the movement locus of the object is set as the detection range. Also good.

  When the person H1 who performs the setting operation performs an operation for starting the setting of the detection range information using, for example, the remote control terminal 5, an instruction (setting command) for setting the detection range information is sent from the remote control terminal 5 to the moving object detection device. 1 is transmitted by a wireless signal.

  When the setting command transmitted from the remote control terminal 5 is input to the image processing circuit 12, the image processing circuit 12 detects a change in the image that occurs according to the movement of the object from the image of the image sensor 11, and Find the movement trajectory.

  When the person H1 who performs the setting operation moves along the boundary portion between the small area to be included in the detection area and the small area to be excluded from the detection area as shown in FIG. 9A, the image processing circuit 12 displays the image. Based on the image of the sensor 11, the movement locus R1 along which the person H1 moves is detected as a specific temporal change. Here, the person H1 who performs the setting work moves along the boundary portion of the small area to be included in the detection range, thereby forming a closed movement locus R1 surrounding the small area to be included in the detection range.

  Thereafter, when the person H1 who performs the setting work performs an operation to end the setting work using the remote control terminal 5, an instruction to end the setting is transmitted from the remote control terminal 5 to the moving object detection device 1. The setting end instruction transmitted from the remote control terminal 5 is received by the second communication circuit 15 and sent from the second communication circuit 15 to the image processing circuit 12. Upon receiving the setting end instruction, the image processing circuit 12 sets detection range information so as not to include the small area SA1 outside the movement locus R1 detected by the above-described processing in the detection range, and stores it in the memory 13. Let The image processing circuit 12 transmits the detection range setting status set by the detection range information registered in the memory 13 from the second communication circuit 15 to the remote control terminal 5. When the remote control terminal 5 receives the detection range setting status transmitted from the moving object detection device 1, the remote control terminal 5 displays the detection range setting status on the display unit 52, and can visually check the detection range setting status. it can.

  FIG. 9A is an example of the movement locus R1, and as shown in FIGS. 9B and 9C, a desired detection area is set according to the movement locus of the person H1 who performs the setting work.

  As described above, the image captured by the image sensor 11 is divided into a plurality of small areas SA1 by the grid-like boundary lines, and whether or not each of the plurality of small areas SA1 is included in the detection range based on the detection range information. Is set. Then, the image processing circuit 12 serving as the setting unit includes detection range information indicating whether or not the small region SA1 is included in the detection range with respect to the small region SA1 whose center is closest to the position where the specific temporal change is detected. It is determined and stored in the memory 13.

  Thereby, when setting the detection range information, if the person who performs the setting operation causes a specific temporal change in the small area to be set, whether or not to include this small area in the detection range is set. The detection range can be set more finely.

  Further, when the image processing circuit 12 serving as the setting unit changes the detection range information indicating whether or not the small area is included in the detection range, the setting state of the detection range set by the detection range information is changed from the second communication circuit 15. It is output to the outside (remote control terminal 5).

  Thereby, the setting status of the detection range can be confirmed externally.

  Further, the image processing circuit 12 serving as the setting unit detects a change in the image that occurs due to the movement of the object as the specific time change. Then, the image processing circuit 12 as the setting unit detects the detection range information so that the inside of the movement locus of the object detected from when the instruction to set the detection range information is input to when the setting end instruction is received is set as the detection range. Set.

  Thus, the person who performs the setting work can easily set the detection range because the desired region is set as the detection range simply by moving around the region to be set as the detection range.

  The above is an embodiment in which the moving object detection device 1 is applied to a lighting control system, but it can also be applied to other uses from the viewpoint of grasping the state of a detection area (indoor). For example, the detection result of the moving object detection device 1 may be used in an air conditioning control system that performs indoor air conditioning control or a crime prevention system that detects an intruder when the alarm mode is set at night or when going out.

  FIG. 10A is a system configuration diagram when the detection result of the moving object detection apparatus 1 is used in an illumination control system, an air conditioning control system, and a crime prevention system. The communication circuit 14 of the moving object detection device 1, the illumination control device 2 of the illumination control system, the air conditioning control device 6 of the air conditioning control system, and the security device 8 of the security system are connected to the communication line W1. The communication circuit 14 of the moving body detection device 1 transmits the result of determining the presence or absence of a moving body (person) to the illumination control device 2, the air conditioning control device 6, and the warning device 8 via the communication line W1.

  The air conditioning control device 6 controls a plurality of air conditioning devices 7 that perform indoor air conditioning based on the determination result transmitted from the moving object detection device 1. When information such as the number of people in the detection area, the location, and the exercise state is input from the moving body detection device 1 to the air conditioning control device 6, the air conditioning control device 6 sets the set temperature and air volume of each air conditioning device 7. The wind direction, the ventilation amount, and the like may be optimally controlled according to the number of people, the location, the exercise state, and the like. Note that the moving body detection device 1 may derive control information of the air conditioner 7 from the result of determining the presence or absence of a person, and transmit this control information from the communication circuit 14 to the air conditioning control device 6.

  Moreover, the warning device 8 issues a warning when a detection signal is input from the moving object detection device 1 in a state where the warning mode is set at night or when going out. Thereby, even if the crime prevention system does not include a dedicated monitoring camera that captures the detection range of the moving object detection device 1, an alarm is issued based on the result of the moving object detection device 1 detecting the presence or absence of a person in the detection range. be able to.

  In the system configuration diagram of FIG. 10A, the illumination control device 2, the air conditioning control device 6, and the warning device 8 are connected to the communication circuit 14 of the moving object detection device 1 via the communication line W1. As shown in FIG. 10B, the communication circuit 14 and the lighting control device 2 are connected by the communication line W1, and the lighting control device 2, the air conditioning control device 6 and the warning device 8 are connected to the communication line W2. May be. In this case, the detection result of the object detection device 1 is sent to the air conditioning control device 6 and the warning device 8 via the illumination control device 2, and the air conditioning control device 6 and the warning device 8 are detected by the object detection device 1. The operation according to is performed.

DESCRIPTION OF SYMBOLS 1 Moving body detection apparatus 2 Lighting control apparatus 3 Lighting fixture 11 Image sensor (camera)
12 Image processing circuit (determination unit, setting unit, output unit)
13 Memory 14 Communication circuit (output unit)

Claims (8)

A camera that images the space to be detected;
A memory that stores detection range information for setting which range is a detection range for detecting the presence or absence of a moving object in the imaging range of the camera;
In the detection range set by the detection range information, a determination unit that determines whether there is a moving object in the detection range by analyzing a plurality of images captured by the camera at different times;
An output unit that outputs at least one of the determination result of the determination unit and the control information of the external device derived from the determination result; and
When an instruction to set the detection range information is input from the outside, a specific temporal change is detected from the image of the camera, and the detection range information is determined based on a position where the specific temporal change is detected. A moving body detection apparatus comprising: a setting unit that determines and stores the determination in the memory.   The moving object detection apparatus according to claim 1, wherein the specific temporal change is a change in an image caused by a periodic brightness change.   The moving object detection apparatus according to claim 1, wherein the specific temporal change is a change in an image generated by a predetermined operation performed by an object.   The setting unit corrects the position of the detection range so that the position where the specific temporal change is detected matches the center of the detection range, and sets detection range information for setting the detection range after correction. The moving object detection device according to claim 1, wherein the moving object detection device is stored in a memory.   5. The moving object according to claim 4, wherein the setting unit detects the specific temporal change once and sets the detection range information, and thereafter stops the operation of detecting the specific temporal change. Detection device. The imaging range of the camera is divided into a plurality of small areas by a grid-like boundary line, and whether or not each of the plurality of small areas is included in the detection range is set by the detection range information,
The setting unit determines the detection range information indicating whether or not to include the small region in the detection range with respect to the small region whose center is closest to the position where the specific temporal change is detected, The moving object detection device according to claim 1, wherein the moving object detection device is stored in the memory.   When the setting unit changes the detection range information indicating whether or not to include the small area in the detection range, the setting unit outputs the detection range setting state set by the detection range information to the outside. The moving body detection device according to claim 6. The specific temporal change is a change in an image caused by the movement of an object,
2. The detection unit according to claim 1, wherein the setting unit sets an inner side of a movement trajectory of an object detected from an input of an instruction to set the detection range information to reception of a setting end instruction as the detection range. Motion detection device.

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