JP2016124693A - In-car passenger detection device of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-car passenger detection device of an elevator which can easily detect a passenger in a car, and can improve the detection accuracy.SOLUTION: This in-car passenger detection device of an elevator comprises an image processor 12 which performs image processing for detecting a passenger in a car 2. The image processor 12 includes: a change determination part 121b which determines whether or not there is a portion which is changed to a vertical direction accompanied by a lift motion of the car 2 out of subjects of images on the basis of a plurality of the images which are photographed by an upper camera 111 and a lower camera 112; and an exclusion part 121c which excludes the portion in which the subject is changed to the vertical direction accompanied by the lift motion of the car 2 out of a time change to the vertical direction and a horizontal direction of the subjects of a plurality of the images from the subjects of the image processing when the change determination part 121b determines that there is the portion which is changed to the vertical direction.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an elevator passenger detection device for an elevator that detects passengers in a car with a window.

  As one of the prior arts of this type of passenger detection device for an elevator car, an imaging unit that captures an imaging region from the inside of the elevator car, and an image that extracts a part of the image captured by the imaging unit as a determination basic image There is known an elevator car monitoring device that includes an extraction unit and a passenger presence / absence determination unit that performs passenger presence / absence determination based on a determination basic image (see, for example, Patent Document 1).

  Further, in this Patent Document 1, the image extracting means further extracts a determination restricted image from the image taken by the photographing means, and the passenger presence / absence determining means determines whether or not the influence of the determination restricted image on the presence / absence determination result exists. A configuration is disclosed in which the presence / absence determination of a passenger is performed based on both the determination basic image and the determination limited image while limiting the influence of the determination basic image on the result. Patent Document 1 also discloses a configuration in which the image extraction unit extracts a determination basic image so as not to include a window of an elevator car with a window.

JP 2002-53275 A

  In the elevator car monitoring device of the prior art disclosed in Patent Document 1 described above, for example, by setting the weighting for the luminance of the pixels of the determination-restricted image lower than the weighting for the luminance of the pixels of the determination basic image, The influence of the judgment restriction image on the detection result of passengers is limited. However, since the limit rate of the determination limit image by such an elevator car monitoring device is arbitrarily set, it is difficult to detect passengers in the car by appropriately adjusting the limit rate. Yes.

  Further, in the elevator car monitoring device of the prior art, the external image that can be seen from the car window by the image extracting means is not included in the judgment basic image, so the external image that can be seen from the car window for the detection result of the passenger in the car. The influence of the image can be reduced. However, since the range of the judgment basic image in the image photographed by the photographing means is narrowed by extracting the judgment basic image so that the image extraction means does not include the car window, detection of passengers in the car on the contrary Is disturbed, and there is a concern that the detection accuracy of passengers will be reduced.

  The present invention has been made based on the actual situation of the prior art as described above. The purpose of the present invention is to detect passengers in a car easily and to detect passengers in an elevator car that can improve the detection accuracy. To provide an apparatus.

  To achieve the above object, an elevator passenger detection device according to the present invention includes a car that moves up and down in a hoistway, and an elevator that is provided in the car and includes a window that allows the outside to be visually recognized. An image collecting device that collects images in the car and that performs image processing for detecting passengers in the car based on temporal changes in the images collected by the image collecting device. In the elevator passenger detection device comprising the device, the image collection device is arranged to be shifted in the vertical direction in the car, and a plurality of images of the subject including the window during the raising and lowering operation of the car Including first and second cameras for photographing, wherein the image processing device is configured to select the image among the subjects of the images based on a plurality of images photographed by the first and second cameras. When it is determined by the change determination unit that there is a portion that changes in the vertical direction when there is a portion that changes in the vertical direction as the cage moves up and down, the plurality of images An exclusion unit that excludes, from the time change in the vertical direction and the horizontal direction of the subject, a portion in which the subject has changed in the vertical direction as the car moves up and down, from the image processing target. It is said.

  According to the passenger detection device for an elevator car of the present invention, passengers in the passenger car can be easily detected, and the detection accuracy can be improved. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

1 is an overall view showing a configuration of an elevator provided with an embodiment of an in-car passenger detection device according to the present invention. It is a figure which shows the image in the cage | basket | car collected by the image collection apparatus shown in FIG. 1, (a) is a figure which shows the door reflected on the picked-up image of the upper camera immediately after a cage | basket | car started the raising / lowering operation | movement. FIGS. 4A and 4B show the doors shown in the upper camera image when a predetermined time has elapsed from the image shooting time shown in FIG. 5A, and FIG. 5C shows the elevator car starting up and down. The figure which shows the door reflected on the picked-up image of the lower camera immediately after having performed, (d) The figure is the door reflected on the picked-up image of the lower camera when predetermined time passed from the photographing time of the image shown in (c) figure FIG. It is a functional block diagram which shows the structure of the image processing apparatus shown in FIG. It is the figure which compared the image shown to Fig.2 (a), and the image shown to FIG.2 (b). It is the figure which compared the image shown in FIG.2 (b), and the image shown in FIG.2 (c). 3 is a flowchart showing a flow of control processing of the image processing apparatus shown in FIG. 1.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the passenger detection apparatus in the elevator car which concerns on this invention is demonstrated based on figures.

  FIG. 1 is an overall view showing a configuration of an elevator provided with an embodiment of an in-car passenger detection device according to the present invention.

  One embodiment of an in-car passenger detection device according to the present invention is applied to, for example, an elevator 1 shown in FIG. The elevator 1 includes a car 2 that moves up and down in a hoistway (not shown) of a building, a main rope 3 that is attached to the car 2 at one end, and the other end of the main rope 3 that is attached to the hoistway. And a counterweight 4 suspended therein.

  The elevator 1 is provided in a machine room (not shown) located above the hoistway, and is disposed in the vicinity of the hoisting machine 5 that drives the car 2 and the counterweight 4. A door 7 is provided on the door 7 for opening and closing the doorway for connecting the car 2 and a platform (not shown) on each floor of the building. And a window 8 that makes it possible to visually recognize. In addition, a door (not shown) that opens and closes the doorway in conjunction with the door 7 of the car 2 is provided at the landing on each floor of the building.

  Further, the elevator 1 is provided on the inner wall of the car 2, and includes an operation panel 9 for outputting a car call registration to the destination floor of the car 2 and a command for opening and closing the door 7, and a wall near the entrance on the landing side. A landing button (not shown) for registering a landing call for the car 2, an elevator control device 10 provided in the machine room for controlling the operation of the car 2 and the drive of the door 7, and the car An image collection device 11 that collects the images in the vehicle 2, and an image processing device 12 that performs image processing for detecting passengers in the car 2 based on temporal changes in the images collected by the image collection device 11. I have.

  The hoisting machine 5 includes a driving sheave 5A around which the main rope 3 is wound, a motor 5B that rotates the driving sheave 5A, and a brake device (not shown) that brakes the rotation of the driving sheave 5A. The motor 5B and the brake device are electrically connected to the elevator control device 10. The hoisting machine 5 having such a configuration raises and lowers the car 2 relative to the counterweight 4 by operating the motor 5B and the brake device in response to a control command from the elevator control device 10. ing.

  The door 7 has, for example, a double-open structure that opens and closes from the center of the entrance / exit of the car 2 to the left and right sides when viewed from the landing side (front side) of each floor. The window 8 is disposed on the upper side of the door 7 according to the position of the passenger's face in the car 2, for example, and is formed in a rectangular parallelepiped shape using transparent glass or the like. The door 7 is not limited to the double door structure described above, and may be, for example, a single door structure that opens and closes in one direction left and right when viewed from the landing side of each floor. Further, a window similar to the window 8 of the car 2 is attached to the door of the landing on each floor at the same height as the window 8.

  The elevator control device 10 is not illustrated, for example, a CPU (Central Processing Unit) that performs various calculations for controlling the operation of the entire elevator 1 including the operation of the car 2 and the drive of the door 7, and the calculation by the CPU. Hardware including a storage device such as a ROM (Read Only Memory) or HDD (Hard Disk Drive) for storing a program to be executed, and a RAM (Random Access Memory) serving as a work area when the CPU executes the program It is composed of Further, the elevator control device 10 is connected to the image processing device 12 via a communication cable (not shown) or the like, and transmits various information related to the control of the elevator 1 to the image processing device 12.

  For example, the image collection device 11 is arranged in the car 2 so as to be shifted in the vertical direction, and an upper camera 111 and a lower camera 112 that take a plurality of images of a subject including the window 8 of the door 7 during the raising / lowering operation of the car 2. (First and second cameras) and the upper camera 111 and the lower camera 112 are connected to each other via a tail cord (not shown), and a plurality of images taken by the upper camera 111 and the lower camera 112 are connected. And an image recording device 113 for recording the image.

  The upper camera 111 and the lower camera 112 are arranged so that the subjects of the captured image are parallel to each other. Specifically, the upper camera 111 and the lower camera 112 may be adjusted by arranging the upper and lower bodies, and the upper and lower limits of the shooting portions of the upper camera 111 and the lower camera 112 are determined using a predetermined software program. Each image may be adjusted by setting. In the present embodiment, the upper camera 111 and the lower camera 112 are attached in a line along the vertical direction on the back side in the car 2, that is, on the upper corner opposite to the door 7, and the entire door 7 is used as a subject. As shown, they are arranged parallel to each other and directed toward the door 7.

  The shooting interval between the upper camera 111 and the lower camera 112 is set in advance according to, for example, the distance between the upper camera 111 and the lower camera 112 in the vertical direction and the raising / lowering speed (driving speed) of the car 2. As one specific example, when the distance between the upper camera 111 and the lower camera 112 is 100 mm (10 cm) and the lifting speed at the start of the lifting operation of the car 2 is 50 mm / sec (300 cm / min), the upper camera 111 The shooting interval between the lower camera 112 and the lower camera 112 is set to 2 seconds obtained by dividing the distance of 100 mm between the upper camera 111 and the lower camera 112 by the lifting speed of 50 mm / sec.

  Therefore, in the present embodiment, the upper camera 111 and the lower camera 112 have a timer unit (not shown) for measuring time, and the subject in the car 2 while measuring time with this timer unit. Are taken every 2 seconds, and each photographed image is transmitted to the image recording device 113.

  The image recording device 113 includes a ROM (Read Only Memory), a HDD (Hard Disk Drive), and the like having sufficient capacity to store a plurality of images taken by the upper camera 111 and the lower camera 112. Images taken by the upper camera 111 and the lower camera 112 are recorded in association with the photographing times of the upper camera 111 and the lower camera 112. The image recording apparatus 113 having such a configuration transmits the recorded images to the image processing apparatus 12, and these images are used for image processing by the image processing apparatus 12.

  Although not shown, for example, the image processing device 12 is a CPU (Central Processing Unit) that performs various computations of image processing for detecting passengers in the car 2, as well as the elevator control device 10, and computations by the CPU. Hardware including a storage device such as a ROM (Read Only Memory) or HDD (Hard Disk Drive) for storing a program to be executed, and a RAM (Random Access Memory) serving as a work area when the CPU executes the program It is composed of The configuration showing the specific functions of the image processing apparatus 12 will be described later in detail.

  Next, collection of images in the car 2 by the image collecting device 11 during the raising / lowering operation of the car 2 will be described in detail with reference to FIG.

  FIG. 2 is a view showing an image in the car collected by the image collecting apparatus shown in FIG. 1, and FIG. 2 (a) shows a door shown in a photographed image of the upper camera immediately after the car starts to move up and down. The figure which shows the door projected on the picked-up image of the upper camera when the predetermined time has passed from the photographing time of the image shown in the figure (a), (c) The figure shows the elevator moving up and down The figure which shows the door reflected on the picked-up image of the lower camera immediately after an operation | movement started, (d) The figure is reflected on the picked-up image of the lower camera when predetermined time passes from the photographing time of the image shown in (c) figure. FIG.

  In this embodiment, the shooting time of the upper camera 111 shown in FIG. 2A is the same as the shooting time of the lower camera 112 shown in FIG. 2C, and the shooting time of the upper camera 111 shown in FIG. The photographing time of the lower camera 112 shown in FIG. 2D is the same. Hereinafter, for convenience, the shooting time of the upper camera 111 shown in FIG. 2A and the shooting time of the lower camera 112 shown in FIG. 2C are t1, and the shooting time of the upper camera 111 shown in FIG. The imaging time of the lower camera 112 shown in 2 (d) is t2, and the images in FIGS. 2 (a) to 2 (d) are distinguished by attaching symbols A to D. As described above, since the shooting interval between the upper camera 111 and the lower camera 112 is set to 2 seconds, the elapsed time from the shooting time t1 to the shooting time t2 is 2 seconds.

  Here, when the car 2 is stopped at the landing on each floor, the inside of the car 2 is generally visible from the outside through the window 8 of the door 7, so that external light can be seen from the window 8. It is in a situation to plug into 2. On the other hand, when a passenger standing by at the landing on each floor gets into the car 2 and operates the operation panel 9 to register the car call, or at a floor other than the floor where the car 2 is currently stopped. When the passenger waiting at (1) operates the landing button to register the landing call, the elevator control device 10 starts moving to the other floor of the car 2. In addition, in the window 8 of the door 7 of the images A to D shown in FIGS. 2A to 2D, a portion where the external light enters is expressed in white, and a portion where the external light does not enter is expressed in black. Yes.

  When the car 2 starts to move up and down, the car 2 accelerates in the vertical direction, and the height positions of the window 8 of the door 7 of the car 2 and the window (not shown) of the landing door shift. At this time, when the upper camera 111 photographs the door 7, as shown in FIG. 2A, a portion in which external light is not reflected on the window 8 of the car 2 occurs in the image A. When the lower camera 112 captures the door 7 at the same time as the capturing time t1 of the upper camera 111 in FIG. 2A, as shown in FIG. Although different, the image recording apparatus 113 can acquire an image C in which the range in which external light enters from the window 8 is the same as the image A shown in FIG.

  Then, when 2 seconds elapse from the shooting time t1 of the upper camera 111 in FIG. 2A, the upper camera 111 captures the door 7 again. At this time, since the car 2 has moved further in the vertical direction than the position at the photographing time t1, as shown in FIG. 2 (b), in the image B photographed by the upper camera 111, with respect to the window 8. The part where the outside light is not reflected is enlarged. Further, when two seconds have elapsed from the photographing time t1 of the lower camera 112 in FIG. 2C and the lower camera 112 photographs the door 7 at the same time as the photographing time t2 of the upper camera 111 in FIG. As shown in FIG. 2 (d), the image recording device 113 is different from the upper and lower limits of the photographing part of the upper camera 111, but the range in which external light enters from the window 8 is the same as the image B shown in FIG. An image D can be acquired.

  Next, a specific configuration showing the function of the image processing apparatus 12 according to the present embodiment will be described in detail with reference to FIG.

  FIG. 3 is a functional block diagram showing the configuration of the image processing apparatus shown in FIG.

  As shown in FIG. 3, the image processing device 12 includes an image analysis unit 121 that analyzes an image recorded in the image recording device 113, that is, a plurality of images taken by the upper camera 111 and the lower camera 112, and this image analysis. An abnormality determination that determines whether or not the behavior of the passenger in the car 2 is abnormal from the analysis result of the unit 121 and determines whether or not the image data analyzed by the image analysis unit 121 is abnormal (failure) Unit 122 and an abnormality command unit 123 that instructs the elevator control device 10 to deal with the abnormality determined by the abnormality determination unit 122.

  The image analysis unit 121 includes an abnormality degree calculation unit 121a that detects passengers in the car 2 from time changes of images recorded in the image recording device 113, and calculates an abnormality degree of passenger behavior. For example, the abnormality degree calculation unit 121a calculates the size and speed of the passenger's movement from the time change rate of the pixel corresponding to the passenger displayed in the images captured by the upper camera 111 and the lower camera 112. The degree of abnormal behavior is calculated. Then, the abnormality degree calculation unit 121a transmits abnormality information indicating the calculated abnormality degree to the abnormality determination unit 122.

  In addition, the image analysis unit 121 has a portion that changes in the vertical direction as the car 2 moves up and down among the subjects of these images based on a plurality of images taken by the upper camera 111 and the lower camera 112. When the change determination unit 121b and the change determination unit 121b determine that there is a portion that changes in the vertical direction, the vertical direction of the subject in the plurality of images taken by the upper camera 111 and the lower camera 112 and Of the time change in the horizontal direction, an excluding unit 121c that excludes a portion where the subject has changed in the vertical direction as the car 2 moves up and down from the target of image processing for detecting passengers in the car 2. have.

  In the present embodiment, the change determination unit 121b limits the determination range to a predetermined portion of a plurality of images taken by the upper camera 111 and the lower camera 112, for example, the window 8 in which external light is reflected. Like to do. The specific contents of the control processing of the entire image processing apparatus 12 including the control processing of the change determination unit 121b and the exclusion unit 121c will be described later in detail.

  The abnormality determination unit 122 refers to the degree of abnormality included in the abnormality information received from the image analysis unit 121, and the behavior of the passenger is abnormal when the degree of abnormality analyzed by the image analysis unit 121 is a predetermined value or more. When the degree of abnormality analyzed by the image analysis unit 121 is less than a predetermined value, it is determined that the behavior of the passenger is not abnormal.

  Further, when the change determination unit 121b determines that there is a portion that changes in the vertical direction, the abnormality determination unit 122 determines that the image data analyzed by the image analysis unit 121 is not abnormal, and the change determination unit 121b When it is determined that there is no portion that changes in the vertical direction, it is determined that the image data analyzed by the image analysis unit 121 is abnormal. Then, abnormality determination unit 122 transmits the determination result to abnormality command unit 123.

  Next, control processing of the image processing apparatus 12 according to the present embodiment will be described in detail based on the flowchart of FIG. 6 with reference to FIGS. 4 and 5 as appropriate. Hereinafter, in order to explain the contents of the present embodiment in an easy-to-understand manner, a control process when the car 2 is raised will be shown.

  4 shows a comparison between the image shown in FIG. 2A and the image shown in FIG. 2B. FIG. 5 shows a comparison between the image shown in FIG. 2B and the image shown in FIG. 6 and 6 are flowcharts showing the flow of control processing of the image processing apparatus shown in FIG.

  As shown in FIG. 6, when the car 2 starts to rise, the image analysis unit 121 of the image processing device 12 has a plurality of images shown in FIGS. 2A to 2D taken by the upper camera 111 and the lower camera 112. Are acquired from the image recording device 113 (step (hereinafter referred to as S) 901).

  Then, the change determination unit 121b of the image analysis unit 121 determines whether or not there is a portion that changes in the vertical direction with the raising / lowering operation of the car 2 in the door 7 displayed in the images A to D, that is, the car 2. It is determined whether or not the external light with respect to the window 8 has changed in accordance with the lifting / lowering operation (S902 to S904, S906).

  Specifically, the change determination unit 121b first displays the image A shown in FIG. 2A taken by the upper camera 111 at the taking time t1, and the image A taken by the lower camera 112 at the taking time t1 in FIG. Referring to the image C shown in FIG. 4, for example, whether there is a portion where the external light is not reflected on the upper side of the window 8 of the car 2 in the images A and C from the luminance of the pixels of the images A and C. Confirmation is made (S902).

  At this time, when the change determination unit 121b confirms that there is no portion where the external light is not reflected on the upper side of the window 8 of the car 2 in the images A and C (S902 / No), the control processing from S901 is performed. Is repeated.

  On the other hand, in S902, when the change determination unit 121b confirms that there is a portion in which the external light is not reflected on the upper side of the window 8 of the car 2 in the images A and C (S902 / Yes), the upper camera 111. 2B and the image D shown in FIG. 2D taken at the shooting time t2 by the lower camera 112, for example, these images B, It is confirmed from the luminance of the pixel of D whether or not the portion where the external light is reflected on the window 8 of the door 7 remains in the images B and D (S903).

  At this time, when the change determination unit 121b confirms that there is no portion in which the external light is reflected on the window 8 of the door 7 in the images B and D (S903 / No), the control processing from S901 is repeated. It is.

  On the other hand, when the change determination unit 121b confirms that the portion where the external light is reflected on the window 8 of the door 7 remains in the images B and D (S903 / Yes), as illustrated in FIG. The image A shown in FIG. 2A photographed at the photographing time t1 by the camera 111 and the image B depicted in FIG. 2B photographed at the photographing time t2 by the upper camera 111 are compared, and the external light in the image A is compared. The position of the upper end of the change point in the range where the incident light and the position of the upper end of the change point in the range where the external light is incident in the image B coincide, that is, the position of the upper end of the portion where the external light in the image A is blocked And the position of the upper end of the portion where the external light in the image B is shielded are confirmed (S904).

  At this time, the change determination unit 121b confirms that the position of the upper end of the changing point in the range where the external light is incident in the image A and the position of the upper end of the changing point in the range where the external light is incident in the image B are not coincident. Then (S904 / No), it is determined that the external light with respect to the window 8 has not changed with the raising / lowering operation of the car 2, and the determination result is transmitted to the abnormality determination unit 122.

  Upon receiving the determination result from the change determination unit 121b, the abnormality determination unit 122 determines that the data of the images A to D is abnormal (S905), and transmits the determination result to the abnormality command unit 123. When the abnormality command unit 123 receives the determination result from the abnormality determination unit 122, the operator calls the operation panel 9 to register the car call so that the operator performs maintenance work such as inspection of the image collection device 11 and the image processing device 12. Alternatively, in response to registration of the hall call by the hall button, a command for maintaining the car 2 in a stopped state is output to the elevator control device 10, and the control processing of the image processing device 12 according to the present embodiment is terminated.

  On the other hand, in S904, the change determination unit 121b confirms that the position of the upper end of the change point in the range where the external light is incident in the image A matches the position of the upper end of the change point in the range where the external light is incident in the image B. (S904 / Yes), since the car 2 is rising in this embodiment, the position of the lower end of the changing point of the range in which the external light is incident in the image A and the range in which the external light in the image B is incident Since the position of the lower end of the change point does not match, as shown in FIG. 5, the image B shown in FIG. 2B taken by the upper camera 111 at the photographing time t2 and the lower camera 112 were taken at the photographing time t1. The image C shown in FIG.

  Here, the shooting interval between the upper camera 111 and the lower camera 112 is set to 2 seconds in advance according to the distance of 100 mm between the upper camera 111 and the lower camera 112 in the vertical direction and the lifting speed of the car 2 of 50 mm / sec. Therefore, the time for the car 2 to move by a distance of 100 mm between the upper camera 111 and the lower camera 112 is considered. Therefore, if the structure outside the car 2 such as the wall of the hoistway blocks the outside light to the window 8 with the raising / lowering operation of the car 2, the lower end of the changing point of the range in which the outside light is incident in the image B is displayed. The position coincides with the position of the lower end of the changing point in the range where the external light in the image C is incident.

  Therefore, the change determination unit 121b determines whether the position of the lower end of the change point in the range where the external light is incident in the image B matches the position of the lower end of the change point in the range where the external light is incident in the image C, that is, the image. It is confirmed whether or not the position of the lower end of the portion where the external light in B is shielded matches the position of the lower end of the portion of the image C where the external light is blocked (S906).

  At this time, the change determination unit 121b confirms that the position of the lower end of the change point in the range where the external light is incident in the image B does not match the position of the lower end of the change point of the range where the external light is incident in the image C. Then (S906 / No), it is determined that the external light with respect to the window 8 has not changed with the raising / lowering operation of the car 2, and the determination result is transmitted to the abnormality determination unit 122. Then, the control process of S905 is performed.

  On the other hand, in S906, the change determination unit 121b confirms that the position of the lower end of the change point in the range where the external light is incident in the image B matches the position of the lower end of the change point in the range where the external light is incident in the image C. Is confirmed (S906 / Yes), it is determined that the external light with respect to the window 8 has changed as the car 2 moves up and down, and the determination result is transmitted to the abnormality determination unit 122.

  Upon receiving the determination result from the change determination unit 121b, the abnormality determination unit 122 determines that the data of the images A to D is normal (S907), and then transmits the determination result to the abnormality command unit 123. Next, the exclusion unit 121c of the image analysis unit 121 changes the time in the vertical and horizontal directions of the subject from the image A to the image B, and the vertical and horizontal directions of the subject from the image C to the image D. Of the time change in the direction, the part in which the external light with respect to the window 8 changes as the car 2 moves up and down is excluded from the target of image processing for detecting passengers in the car 2 (S908).

  Next, the degree-of-abnormality calculation unit 121a of the image analysis unit 121 changes the time in the vertical and horizontal directions of the subject from the image A to the image B excluded from the image processing target by the exclusion unit 121c, and the image After detecting the passenger in the car 2 from the time change in the vertical direction and the horizontal direction of the subject from C to the image D and calculating the degree of abnormality of the passenger's behavior (S909), the abnormality information is determined to be abnormal. 122. In addition, in the detection of the passenger in the car 2, since the portion corresponding to the passenger in the images A to D does not change as light and dark with the lifting and lowering operation of the car 2, like the outside light for the window 8, It can be discriminated as a change in external light with respect to the window 8.

  Next, when the abnormality determination unit 122 receives the abnormality information from the abnormality degree calculation unit 121a, the abnormality determination unit 122 checks whether or not the abnormality degree included in the abnormality information is greater than or equal to a predetermined value (S910). At this time, when the abnormality determination unit 122 confirms that the abnormality level included in the abnormality information is not equal to or greater than the predetermined value, that is, the abnormality level is less than the predetermined value (S910 / No), the passenger behavior is not abnormal, that is, the passenger Is determined to be normal (S911), and the determination result is transmitted to the abnormality command unit 123. Then, when receiving the determination result from the abnormality determination unit 122, the abnormality command unit 123 ends the control process of the image processing apparatus 12 according to the present embodiment.

  On the other hand, in S910, when the abnormality determination unit 122 confirms that the abnormality degree is equal to or greater than the predetermined value (S910 / Yes), the abnormality determination unit 122 determines that the behavior of the passenger is abnormal (S912), and determines the determination result as the abnormality command unit. 123. And the abnormality command part 123 will output the instruction | command which stops the car 2 to the nearest floor and opens the door 7 to the elevator control apparatus 10, if the determination result is received from the abnormality determination part 122, The image which concerns on this embodiment The control process of the processing device 12 is terminated. The control processing when the car 2 is raised has been described above, but the present embodiment is also applicable to the case where the car 2 is lowered.

  According to the present embodiment configured as described above, in a plurality of images taken by the upper camera 111 and the lower camera 112 during the raising / lowering operation of the car 2, the external light reflected from the window 8 of the door 7 is changed. Of the temporal changes in the vertical and horizontal directions of the subject in these images determined by 121b, the part where the external light has changed due to the raising / lowering operation of the car 2 is removed by the exclusion unit 121c. It can be excluded from the object of image processing, that is, invalidated. Therefore, the image processing device 12 can easily detect the passengers in the car 2 without being affected by the external light from the window 8 in the image processing. Thereby, since the erroneous detection of the passenger by the external light from the window 8 can be prevented, the detection accuracy of the passenger can be sufficiently improved.

  Further, in the present embodiment, the change determination unit 121b sets the determination range to a portion that easily changes with the raising / lowering operation of the car 2 in the plurality of images captured by the upper camera 111 and the lower camera 112. By limiting in advance, as a target of image processing by the image processing apparatus 12, a temporal change only in the horizontal direction of the subject in each image is suppressed to a necessary minimum, and then the vertical direction and the horizontal direction of the subject other than the portion concerned. Therefore, the image processing apparatus 12 can detect passengers in the car 2 efficiently. Thereby, since the detection performance of the passenger in the passenger car 2 can be enhanced, excellent detection accuracy can be obtained.

  In addition, this embodiment mentioned above was described in detail in order to demonstrate this invention easily, and is not necessarily limited to what is provided with all the demonstrated structures. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment.

  In the present embodiment, the upper camera 111 and the lower camera 112 take images of the subject in the car 2 at predetermined time intervals (2 seconds in this embodiment) while measuring the time with an internal timer unit. Although the case has been described, the present invention is not limited to this case. For example, the image processing device 12 acquires information on the distance between the upper camera 111 and the lower camera 112 in the up-down direction and the lifting speed of the car 2 from the elevator control device 10, and the upper camera 111 during the lifting operation of the car 2. When the car 2 is confirmed to have moved by the distance between the upper camera 111 and the lower camera 112 from the time when the lower camera 112 first photographed, the upper camera 111 and the lower camera 112 are configured to photograph. Also good.

DESCRIPTION OF SYMBOLS 1 Elevator 2 Car 7 Door 8 Window 9 Operation panel 10 Elevator control device 11 Image collection device 12 Image processing device 111 Upper camera (first camera)
112 Lower camera (second camera)
113 Image Recording Device 121 Image Analysis Unit 121a Abnormality Calculation Unit 121b Change Determination Unit 121c Exclusion Unit 122 Abnormality Determination Unit 123 Abnormality Command Unit

Claims (2)

A car that goes up and down in the hoistway, and an elevator that is provided in the car and has a window that allows the outside to be visually recognized,
An image collecting device that collects images in the car, and an image processing device that performs image processing for detecting passengers in the car based on temporal changes in the images collected by the image collecting device. In the elevator car passenger detection device provided,
The image collecting device includes:
A first camera and a second camera which are arranged in the car so as to be shifted in the vertical direction, and which take a plurality of images of a subject including the window during the raising and lowering operation of the car;
The image processing apparatus includes:
A change based on a plurality of images taken by the first and second cameras to determine whether or not there is a portion of the subject that changes in the vertical direction as the car moves up and down in the subject. A determination unit;
When the change determination unit determines that there is a portion that changes in the vertical direction, the subject in accordance with the raising / lowering operation of the car among the temporal changes in the vertical direction and the horizontal direction of the subject in the plurality of images. An elevator passenger detection device comprising: an excluding unit that excludes a portion in which the vertical direction is changed from the target of the image processing. In the elevator car passenger detection device according to claim 1,
The change determination unit limits a range to be determined to a predetermined part of the plurality of images, and detects the passenger in the elevator car.