JP5491959B2 - Elevator door diagnostic device and door diagnostic method - Google Patents

Description

  The present invention relates to an elevator door diagnosis apparatus and a door diagnosis method provided with a detection device that is provided in an elevator and detects an abnormality occurring in an openable / closable door.

  Generally, an elevator includes a door that is guided by a sill and that opens and closes, and a door safety shoe that is provided on the door and reverses when a passenger is caught in the door during the door closing operation. In addition, an elevator has an abnormality that occurs in the door, for example, dust is caught in the groove of the sill, and the door cannot be opened or closed, or the passenger operates the door safety shoe more than necessary, causing problems in the opening and closing of the door. In order to respond appropriately to the situation, a detection device for detecting an abnormality occurring in the door is provided.

  As one of the prior arts of elevators equipped with a detection device that detects such abnormalities occurring in the door, a camera is installed in the elevator car, and the camera is operated when the door is abnormal, and images in the car are communicated. 2. Description of the Related Art An elevator door abnormality confirmation device that transmits information to a monitoring center via a means is known (see, for example, Patent Document 1).

  This elevator door abnormality confirmation device allows the monitoring center workers to check the video taken by the camera installed in the car when an abnormality occurs in the door, thereby causing the cause of the abnormality that occurred in the door. And properly give instructions to passengers.

JP 2002-241063 A

  The prior art elevator door abnormality confirmation device disclosed in Patent Document 1 is a case where an abnormality occurs in the door, as described above, for example, when the door cannot be opened or closed due to dust caught in a sill, or a passenger or an object. If the door is opened and closed repeatedly by operating the door safety shoe more than necessary, the worker cannot open and close from the image taken with the camera installed in the car Since the status of the door that has become can be confirmed, the cause of the abnormality occurring in the door can be easily identified. However, when the door cannot be opened and closed, and there is a problem with the door opening and closing operation, for example, when the door opening and closing speed is delayed due to elongation or slippage of the chain used to drive the door. Even if the worker checks the video taken with the camera installed in the car, the worker cannot easily grasp that the door opening / closing speed has changed, It is easy to overlook the abnormal opening / closing operation. If an abnormal opening / closing operation such as this occurs in the door and the malfunction of the door opening / closing operation progresses, the door cannot be opened and closed and the elevator may be used until the operator repairs the elevator. There is concern that it will be impossible.

  The present invention has been made based on such a situation of the prior art, and an object of the present invention is to provide an elevator door diagnosis device and a door diagnosis method capable of detecting an abnormality at an early stage when an abnormality occurs in the door opening / closing operation. It is to provide.

In order to achieve the above object, an elevator door diagnostic apparatus according to the present invention is an elevator door diagnostic apparatus provided in an elevator and provided with a detection device for detecting an abnormality occurring in an openable / closable door. Is a marker provided on the door, an image acquisition device that acquires an image of the door that includes the marker, and a position of the marker that is detected based on the image acquired by the image acquisition device. An image analysis device that analyzes the presence or absence of an abnormality in the operation based on the position of the marker, and the image acquisition device is located at a position where the marker can be photographed in the elevator car. Provided with a camera for photographing the marker and passengers in the car, wherein the image analysis device is different in opening / closing operation of the door. Position change amount of the marker per unit time in the door opening / closing operation in a normal state in which no occurrence occurs, and position change amount of the marker per unit time when the door opening / closing operation is performed Comparing the position of each marker compared by the comparing means is greater than a predetermined value, it is determined that an abnormality has occurred in the door opening and closing operation, the comparison Determining means for determining that no abnormality has occurred in the opening and closing operation of the door when the difference in the positional change amount of each marker compared by the means is equal to or less than a predetermined value; and Passenger detection means for detecting whether there is a passenger in the car by checking an image in the car taken by the camera when it is determined that an abnormality has occurred in the car The passenger detection means, if the determination means determines that an abnormality has occurred in the opening and closing operation of the door, if the passenger is not detected from the image in the car taken by the camera, It is characterized in that it is determined that the opening / closing operation abnormality is not caused by a passenger .

  In the present invention configured as described above, the marker is provided on the door, and when the opening / closing operation of the door is performed, the marker moves integrally with the door. Therefore, the detecting device acquires an image of the door including the marker by the image acquisition device, and analyzes the positional change of the marker in the image by the image analysis device, thereby easily grasping the door operation change in the door opening / closing operation. can do. As a result, the image analysis apparatus can detect whether or not an abnormality has occurred in the door opening / closing operation during the door opening / closing operation, so that the abnormality can be known early when the door opening / closing operation has an abnormality. .

Further, the present invention provides a door opening / closing operation when there is an abnormality in the door opening / closing operation, for example, when the door opening / closing speed is delayed due to, for example, elongation or slippage of the chain used to drive the door. The amount of change in the marker position per unit time is smaller than the amount of change in the marker position per unit time in the door opening / closing operation in the normal state. As described above, when an abnormality occurs in the door opening / closing operation, the comparison unit of the image analysis apparatus determines whether the marker position change amount per unit time in the door opening / closing operation and the door opening / closing in the normal state. When comparing the positional change amount of the marker per unit time in the operation, the positional change amount of each marker per unit time is different.

  Therefore, the determination unit of the image analysis apparatus determines whether there is an abnormality that has occurred in the opening / closing operation of the door according to the magnitude of the difference in the position change amount of each marker per unit time compared by the comparison unit, That is, when the difference in the position change amount of each marker is larger than a predetermined value set in advance, it is determined that an abnormality has occurred in the door opening / closing operation, and the position change amount of each marker compared by the comparison means is determined. By determining that no abnormality has occurred in the door opening / closing operation when the difference is equal to or less than the predetermined value, it is possible to accurately detect whether there is an abnormality in the door opening / closing operation. Thereby, the reliability of a detection apparatus can be improved.

  In the elevator door diagnostic apparatus according to the present invention, in the invention, the detection device includes a first marker provided on a front surface of the door and a first marker provided on a side surface of the door. And two markers.

  In the present invention configured as described above, even when the door is completely opened in the opening / closing operation of the door and the first marker provided on the front of the door is hidden in the door pocket of the door, the second marker is Since it is provided on the side of the door, it is not hidden in the door pocket of the door. Therefore, even when the door is fully opened, the image acquisition device can acquire an image including the second marker. Further, even when the door is completely closed during the opening / closing operation of the door and the second marker provided on the side surface of the door becomes invisible, the first marker is provided on the front surface of the door. The image acquisition device can acquire an image including the first marker. Therefore, the image acquisition device can acquire an image including at least one of the first marker and the second marker from the start to the end of the door opening / closing operation, and can improve the accuracy of the detection device.

The elevator door diagnosis method according to the present invention further includes a detection device that is provided in the elevator and detects an abnormality that has occurred in the openable / closable door. The detection device includes a marker provided on the door, and the marker. An image acquisition device that acquires an image of the door including the position of the marker, the position of the marker is detected based on the image acquired by the image acquisition device, and an operation that has occurred in the door based on the detected position of the marker An image analysis device for analyzing the presence or absence of abnormality, wherein the image acquisition device is provided at a position where the marker can be photographed in the elevator car, and the marker and the passenger in the car The image analysis device is configured to open and close the door in a normal state in which no abnormality has occurred in the opening and closing operation of the door. Comparing means for comparing the amount of change in the position of the marker per unit time with the amount of change in the position of the marker per unit time when the door is opened and closed, When the difference in the position change amount of the marker is larger than a predetermined value, it is determined that an abnormality has occurred in the opening and closing operation of the door, and the difference in the position change amount of each marker compared by the comparison means is A determination unit that determines that an abnormality has not occurred in the opening and closing operation of the door when the value is equal to or less than a predetermined value; and the camera that determines that an abnormality has occurred in the opening and closing operation of the door when the determination unit determines Elevator for use in an elevator door diagnostic device including passenger detection means for detecting whether or not there are passengers in the car by confirming images taken in the car In the door diagnosis method, after the image acquisition device acquires the image of the door including the marker, the comparison means of the image analysis device has an abnormality in the opening / closing operation of the door based on the image. The amount of change in the position of the marker per unit time in the opening / closing operation of the door during a normal state is compared with the amount of change in the position of the marker per unit time when the door opening / closing operation is performed. The determination means determines that an abnormality has occurred in the opening / closing operation of the door when the difference in the positional change amount of each marker compared by the comparison means is larger than a predetermined value, and the comparison means When the difference in the amount of change in the position of each marker compared with each other is less than or equal to a predetermined value, it is determined that no abnormality has occurred in the opening / closing operation of the door, If the determination means determines that an abnormality has occurred in the opening and closing operation of the door, and if the passenger is not detected from the image in the car taken by the camera, the stage of the opening and closing operation of the door It is characterized by judging that the abnormality is not caused by passengers .

  In the present invention configured as described above, when the opening / closing operation of the door is performed, the marker moves integrally with the door. Therefore, the detection device acquires the image of the door including the marker by the image acquisition device, and then performs image analysis. By analyzing the change in the position of the marker in the image by the apparatus, it is possible to easily grasp the change in the door operation during the door opening / closing operation. As a result, the image analysis apparatus can detect whether or not an abnormality has occurred in the door opening / closing operation during the door opening / closing operation, so that the abnormality can be known early when the door opening / closing operation has an abnormality. .

  In the elevator door diagnosis method according to the present invention, in the invention, the marker of the detection device provided in the elevator door diagnosis device includes a first marker provided on a front surface of the door; It includes a second marker provided on a side surface of the door.

  In the elevator door diagnosis apparatus and door diagnosis method according to the present invention, when the door is opened and closed, the marker moves together with the door, so the image of the door including the marker obtained by the image acquisition apparatus is obtained. Thus, by analyzing the change in the position of the marker by the image analyzer, it is possible to easily grasp the change in the door operation during the door opening / closing operation. Therefore, when an abnormality occurs in the door opening / closing operation, the detection device can detect that the abnormality has occurred from the change in the door operation during the door opening / closing operation by the image analysis device. Can be detected at an early stage, and the door can be repaired and improved promptly when an abnormality occurs in the opening and closing operation of the door.

It is a figure which shows the structure of one Embodiment of the door diagnostic apparatus of the elevator which concerns on this invention. It is a figure which shows the start state (t0 = 0) of the door opening operation | movement diagnosed by the door diagnostic apparatus of the elevator which concerns on this embodiment. It is a figure which displays the position coordinate of the 1st marker shown in FIG. 2 in the image analyzed by the image analysis apparatus with which this embodiment is equipped. It is a figure which shows the state of a door when t1 has passed since the door opening operation | movement diagnosed by this embodiment started. It is a figure which displays the position coordinate of the 1st marker shown in FIG. 4, and the 2nd marker in the image analyzed by the image-analysis apparatus with which this embodiment is equipped. It is a figure which shows the state (t1 <t2) of a door when t2 has passed since the door opening operation | movement diagnosed by this embodiment started. It is a figure which displays the position coordinate of the 1st marker shown in FIG. 6, and the 2nd marker in the image analyzed by the image analysis apparatus with which this embodiment is equipped. It is a figure which shows the state which the door opening operation | movement of the door diagnosed by this embodiment was completed. It is a figure which displays the position coordinate of the 2nd marker shown in FIG. 8 in the image analyzed by the image analysis apparatus with which this embodiment is equipped. The figure showing the relationship between the elapsed time in the door opening operation | movement diagnosed by this embodiment, and the position coordinate of the 1st marker and the 2nd marker in the image analyzed by the image analysis apparatus with which this embodiment is equipped. It is.

  EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the door diagnostic apparatus and door diagnostic method of an elevator which concern on this invention is demonstrated based on figures.

  As shown in FIG. 1, an embodiment of an elevator door diagnostic apparatus according to the present invention includes a detection device that is provided in an elevator car 2 and detects an abnormality occurring in an openable door 10. Although not shown, this embodiment includes various devices such as push buttons and a display provided in the car 2.

  The detection device includes a marker provided on the door 10 and an image acquisition device that acquires an image of the door 10 including the marker, for example, the camera 3 provided in the car 2. The detection device is connected to the camera 3 and records and manages an image acquired by the camera 3. The detection device detects the position of the marker based on the image acquired by the camera 3. And an image analysis device 5 that analyzes the presence or absence of an abnormal operation that has occurred in the door 10 based on the position. As shown in FIGS. 4 and 6, the marker of the detection device includes a first marker 11 provided on the front surface of the door 10 and a second marker 13 provided on the side surface of the door 10. Yes. The camera 3 is provided above the wall surface facing the door 10 in the car 2, that is, at a position where the first marker 11 and the second marker 13 can be photographed. The first marker 11 and the second marker 13 are highly visible materials such as a light emitting material, a phosphorescent material, or a highly reflective material, and can prevent misrecognition in the analysis in the image analysis device 5. Each consists of

  In addition, the present embodiment is connected to the image management device 4 and the image analysis device 5, and controls a device control device 1 that controls various devices such as push buttons and a display, and an elevator based on a signal from the device control device 1. And an elevator control device 6 for controlling the motor. Furthermore, this embodiment is connected to the elevator control device 6 and is connected to the monitoring device 7 for monitoring the operation status of the elevator and the state of various devices, and is connected to the monitoring device 7 via the communication network 8 to operate the elevator. And a monitoring center 9 for receiving a status signal, various device status signals, and a signal transmitted when an elevator abnormality is detected.

The image analysis apparatus 5 includes a marker per unit time in the opening / closing operation of the door 10 in a normal state in which no abnormality occurs in the opening / closing operation of the door 10, for example, the position change amount of the first marker 11, and the door 10. The first comparison means for comparing the position change amount of the first marker 11 per unit time in the opening / closing operation of the door 10 when the opening / closing operation is being performed, and each of the first comparison means compared by the first comparison means. When the difference in the position change amount of one marker 11 is larger than a predetermined value, it is determined that an abnormality has occurred in the opening / closing operation of the door 10, and each of the first markers 11 compared by the first comparing means is compared. A first determination unit that determines that an abnormality has not occurred in the opening / closing operation of the door 10 when the difference in position change amount is equal to or less than a predetermined value is included.

In addition, the image analysis apparatus 5 detects the amount of change in the position of a marker per unit time, for example, the second marker 13 in the opening / closing operation of the door 10 in a normal state in which no abnormality occurs in the opening / closing operation of the door 10, The second comparison means for comparing the position change amount of the second marker 13 per unit time in the opening / closing operation of the door 10 when the opening / closing operation of 10 is performed is compared with the second comparison means. When the difference in the position change amount of each second marker 13 is larger than a predetermined value, it is determined that an abnormality has occurred in the opening / closing operation of the door 10, and each second marker compared by the second comparison means 13 has a second determination means for determining that no abnormality has occurred in the opening / closing operation of the door 10 when the difference in position change amount of 13 is equal to or less than a predetermined value. Note that the image analysis device 5 determines that the inside of the car 2 photographed by the camera 3 when at least one of the first determination means and the second determination means determines that an abnormality has occurred in the opening / closing operation of the door 10. The passenger detection means for detecting whether or not there are passengers in the car 2 by confirming the image is internally provided.

  In the door diagnosis apparatus according to the present embodiment configured as described above, the door diagnosis is performed as follows, for example.

  FIG. 2 is a diagram illustrating a door opening operation start state (t0 = 0) diagnosed by the elevator door diagnostic apparatus according to the present embodiment, and FIG. 3 is analyzed by the image analysis apparatus provided in the present embodiment. The figure which displays the position coordinate of the 1st marker shown in FIG. 2 in an image, FIG. 4 is a figure which shows the state of the door when t1 has passed since the door opening operation | movement diagnosed by this embodiment started, FIG. 5 is a diagram showing the position coordinates of the first marker and the second marker shown in FIG. 4 in an image analyzed by the image analysis apparatus provided in the present embodiment, and FIG. 6 is a door diagnosed by the present embodiment. FIG. 7 is a diagram illustrating a door state (t1 <t2) when t2 has elapsed from the start of the opening operation of FIG. 7, and FIG. 7 is a first image illustrated in FIG. 6 in an image analyzed by the image analysis apparatus provided in the present embodiment. Mar FIG. 8 is a view showing a state where the door opening operation diagnosed by the present embodiment is completed, and FIG. 9 is a view showing the position coordinates of the second marker and the second marker. FIG. FIG. 10 shows the position coordinates of the second marker shown in FIG. 8 in the image to be analyzed. FIG. 10 shows the elapsed time in the door opening operation diagnosed by this embodiment, and the image analysis apparatus provided in this embodiment. It is a figure showing the relationship with the position coordinate of the 1st marker in the image analyzed by (2), and the 2nd marker.

  In one embodiment of the elevator door diagnostic method used in the elevator door diagnostic apparatus according to the present invention, after the camera 3 acquires an image of the door 10 including the first marker 11 and the second marker 13, the image analysis apparatus 4 detects the position change amounts of the first marker 11 and the second marker 13 in the opening / closing operation of the door 10 based on this image, and the detected position change amounts of the first marker 11 and the second marker 13 are detected. Based on this, an abnormality in the operation occurring in the door 10 is detected.

  Specifically, in this embodiment, when an opening / closing operation of the door 10 of the car 2, for example, an opening operation is performed, when the opening operation of the door 10 of the car 2 is started (t 0 = 0), FIG. As shown in FIG. 2, the door 10 of the car 2 is completely closed. Therefore, the first marker 11 appears on the surface of the door 10 and is visible from the position where the camera 3 is installed. On the other hand, the second marker 13 is invisible from the position where the camera 3 is installed because the door 10 is closed. At this time, the position coordinates of the first marker 11 in the image acquired by the camera 3 and analyzed by the image analysis device 5 are (x01, y01) as shown in FIG.

  When t1 has elapsed from the start of the opening operation of the door 10 (t0 = 0), the door 10 is slightly opened as shown in FIG. 4, and the first marker 11 is visible from the position where the camera 3 is installed. It has become. The second marker 13 is visible from the position where the camera 3 is installed when the door 10 is opened. At this time, the position coordinates of the first marker 11 and the position coordinates of the second marker 13 in the image acquired by the camera 3 and analyzed by the image analysis device 5 are (x02, y02) as shown in FIG. , (X12, y12).

  When t2 (t1 <t2) has elapsed from the start of the opening operation of the door 10 (t0 = 0), as shown in FIG. 6, the door 10 is in a slightly opened state as compared to the state of the door 10 shown in FIG. The first marker 11 is in a state where it can be seen from the position where the camera 3 is installed in the same manner as when t1 has elapsed since the start of the opening operation of the door 10. The second marker 13 is in a state where it can be seen from the position where the camera 3 is installed in the same manner as when t1 has elapsed since the start of the door opening operation of the door 10. At this time, the position coordinates of the first marker 11 and the position coordinates of the second marker 13 in the image acquired by the camera 3 and analyzed by the image analysis device 5 are (x03, y03) as shown in FIG. , (X13, y13).

  When the opening operation of the door 10 is completed, as shown in FIG. 8, the door 10 is completely opened, and the first marker 11 is hidden in the door pocket of the door 10, so the camera 3 is installed. It is in a state where it cannot be seen from the position. The second marker 13 is in a state where it can be seen from the position where the camera 3 is installed in the same manner as when t2 has elapsed since the start of the door 10. At this time, the position coordinates of the second marker 13 in the image acquired by the camera 3 and analyzed by the image analysis device 5 are (x14, y14) as shown in FIG.

  In the present embodiment, the image analysis apparatus 5 obtains the position coordinates of the first marker 11 and the position coordinates of the second marker 13 for each time passage of the opening and closing operation of the door 10 acquired by the camera 3 as shown in FIG. Create a recorded table. Specifically, the image analysis device 5 starts from the time when the signal for starting the opening operation of the door 10 is received from the device control device 1 (t0 = 0), and is recorded in the image management device 4 as described above. 3, 5, 7, and 9 are cut out as still images every unit time. Then, the image analysis device 5 uses the position coordinates (x0n, y0n), (x1n, y1n) (n = 0, 1, 2...) Of the first marker 11 and the second marker 13 for each unit time as a still image. ..) Are recorded, and a table indicating temporal transition of the first marker 11 and the second marker 13 is created.

  The image analysis device 5 creates a similar table every time the door 10 is opened. Next, the first comparison means of the image analysis device 5 is configured to detect the positional change amount of the first marker 11 in each table created each time the door 10 is opened, and the door 10 created in advance. The position change amount of the first marker 11 on the table in the normal state where no abnormality occurs in the opening operation is compared. After that, the first determination unit of the image analysis device 5 has an abnormality in the opening / closing operation of the door 10 when the difference in position change amount of each first marker 11 compared by the first comparison unit is larger than a predetermined value. If there is no abnormality in the opening / closing operation of the door 10 when the difference in the positional change amount of each first marker compared by the first comparison means is equal to or less than a predetermined value. judge.

  Similarly, the second comparison unit of the image analysis device 5 is configured such that the position change amount of the second marker 13 in each table created each time the door 10 is opened, and the door 10 created in advance. The positional change amount of the second marker 13 in the table in the normal state where no abnormality occurs in the opening / closing operation is compared. After that, the second determination unit of the image analysis apparatus 5 has an abnormality in the opening / closing operation of the door 10 when the difference in position change amount of each second marker 13 compared by the second comparison unit is larger than a predetermined value. If there is no abnormality in the opening / closing operation of the door 10 when the difference in position change amount of each second marker compared by the second comparison means is equal to or less than a predetermined value. judge.

  At this time, the passenger detection means of the image analysis device 5 is photographed by the camera 3 when at least one of the first determination means and the second determination means determines that an abnormality has occurred in the opening / closing operation of the door 10. If the passenger is not detected from the image in the car 2, it can be determined that the abnormality in the opening / closing operation of the door 10 is not caused by the passenger. In this case, the image analysis device 5 transmits a signal indicating that an abnormality has occurred in the opening / closing operation of the door 10 to the device control device 1.

  On the other hand, the passenger detection means of the image analysis device 5 determines that at least one of the first determination means and the second determination means has an abnormality in the opening / closing operation of the door 10, and When a passenger is detected from the image in the car 2, transmission of a signal indicating that an abnormality has occurred in the opening / closing operation of the door 10 to the device control apparatus 1 is stopped. In addition, when both the first determination unit and the second determination unit determine that there is no abnormality in the opening / closing operation of the door 10, the image analysis apparatus 5 generates an abnormality in the opening / closing operation of the door 10. A signal indicating that it has not been transmitted is transmitted to the device control apparatus 1.

  Thus, when the signal which shows that abnormality has occurred in the opening / closing operation | movement of the door 10 is transmitted to the equipment control apparatus 1, the elevator control apparatus 6, the monitoring apparatus 7, and the monitoring center from the equipment control apparatus 1 The said signal is transmitted to 9, and the apparatus control apparatus 1 and the elevator control apparatus 6 control various apparatuses and an elevator, respectively. On the other hand, when the monitoring center 9 receives a signal indicating that an abnormality occurs in the opening / closing operation of the door 10, the worker goes to the building of the elevator in which the opening / closing operation of the door 10 is abnormal, and the abnormality occurs. Repair and improve the door 10 that is being used.

  According to one embodiment of the door diagnosis device and the door diagnosis method configured as described above, when the door 10 is opened and closed, the first marker 11 and the second marker 13 are integrated with the door 10. Therefore, the detection device acquires an image of the door 10 including the first marker 11 and the second marker 13 by the camera 3, and the first marker 11 and the second marker in the image by the image analysis device 5. By analyzing the change in the position of the marker 13, it is possible to easily grasp the change in the operation of the door 10 in the opening / closing operation of the door 10. As a result, the image analysis device 5 analyzes whether or not an abnormality has occurred in the change in the operation of the door 10 during the opening and closing operation of the door 10, so that the abnormality can be detected early when an abnormality occurs in the opening and closing operation of the door 10 The door 10 can be repaired and improved promptly when an abnormality occurs in the opening / closing operation of the door 10.

  Further, in one embodiment of the elevator door diagnostic apparatus according to the present invention, each time the door 10 is opened as described above, the image analysis apparatus 5 includes the first marker 11 and the first marker per unit time. A table showing the temporal transition of the two markers 13 is created. And the 1st comparison means in the table at the time of the normal state where the amount of change in the position of the first marker 11 in each created table and the opening operation of the door 10 created in advance has not occurred The position change amount of the first marker 11 is compared. Similarly, when the second comparison means is in a normal state in which no abnormality has occurred in the position change amount of the second marker 13 in each created table and the door 10 opening operation created in advance. The amount of change in the position of the second marker 13 is compared. Here, when there is an abnormality in the opening / closing operation of the door 10, the position change amount of each first marker 11 compared by the first comparison means is different, and each of the first comparison results compared by the second comparison means is different. The position change amounts of the two markers 13 are different. That is, when an abnormality occurs in the opening / closing operation of the door 10, a difference occurs in the position change amount of each first marker 11 and a difference occurs in the position change amount of each second marker 13.

  For this reason, the first determination unit of the image analysis apparatus 5 is abnormal in the opening / closing operation of the door 10 when the difference in the positional change amount of each first marker 11 compared by the first comparison unit is larger than a predetermined value. If there is no abnormality in the opening / closing operation of the door 10 when the difference in the positional change amount of each first marker compared by the first comparison means is equal to or less than a predetermined value. When the second determination means of the image analysis device 5 makes a determination or the difference in the positional change amount of each second marker 13 compared by the second comparison means is larger than a predetermined value, the door 10 is opened and closed. When the difference between the position change amounts of the second markers 13 compared by the second comparison means is equal to or less than a predetermined value, an abnormality occurs in the opening / closing operation of the door 10. By determining that the door is not The presence or absence of an abnormality occurring in opening and closing operation of the 0 can be accurately detected. Thereby, the reliability of a detection apparatus can be improved.

  In the present embodiment, the marker of the detection device includes a first marker 11 provided on the front surface of the door 10 and a second marker 13 provided on the side surface of the door 10. 8, even when the door 10 is completely opened in the opening operation of the door 10 and the first marker 11 provided on the front surface of the door 10 is hidden in the door pocket of the door 10, The marker 13 is not hidden in the door pocket of the door 10. Therefore, even when the door 10 is fully opened, the camera 3 can acquire an image including the second marker 13.

  Further, as shown in FIG. 2, even when the second marker 13 provided on the side surface of the door 10 is not visible at the start of the opening operation of the door 10 (t0 = 0), Since the marker 11 is provided in front of the door 10, the camera 3 can acquire an image including the first marker 11. Therefore, the camera 3 can acquire an image including at least one of the first marker 11 and the second marker 13 from the start to the end of the opening operation of the door 10, and can improve the accuracy of the detection device. .

  In addition, although this embodiment demonstrated the case where door opening operation | movement was performed among the opening / closing operation | movement of the door 10 of the passenger car 2, it is applied similarly when not only door opening operation | movement but door closing operation | movement is performed. it can. In this case, the image analysis device 5 detects the presence / absence of an abnormality that has occurred in the opening / closing operation of the door 10 in both the opening operation and the closing operation of the door 10 of the car 2, thereby further improving the accuracy of the detection device. Can do.

  In the present embodiment, the passenger detection unit of the image analysis apparatus 5 determines that at least one of the first determination unit and the second determination unit has an abnormality in the opening / closing operation of the door 10, and the camera 3 The case where transmission of a signal indicating that an abnormality has occurred in the opening / closing operation of the door 10 to the device control apparatus 1 when the passenger is detected from the image in the car 2 photographed in FIG. Regardless of whether or not the passenger detection means of the image analysis device 5 detects a passenger from the image in the car 2 photographed by the camera 3, the image analysis device 5 includes the first determination means and the second determination means. When at least one of the determination means determines that an abnormality has occurred in the opening / closing operation of the door 10, a signal indicating that an abnormality has occurred in the opening / closing operation of the door 10 is transmitted to the device control apparatus 1. Also good.

1 Device control device 2 Car 3 Camera (image acquisition device)
4 Image management device 5 Image analysis device 6 Elevator control device 7 Monitoring device 8 Communication network 9 Monitoring center 10 Door 11 First marker 13 Second marker

Claims (4)

In an elevator door diagnostic apparatus provided with a detection device that is provided in an elevator and detects an abnormality occurring in an openable door,
The detection device detects a position of the marker based on a marker provided on the door, an image acquisition device that acquires an image of the door including the marker, and the image acquired by the image acquisition device, An image analysis device that analyzes the presence or absence of an abnormal operation that has occurred in the door based on the detected position of the marker ;
The image acquisition device is provided at a position where the marker can be photographed in the elevator car, and includes a camera for photographing the marker and passengers in the car,
The image analysis device includes:
The amount of change in the position of the marker per unit time in the door opening / closing operation in a normal state where no abnormality has occurred in the door opening / closing operation, and per unit time when the door opening / closing operation is performed A comparison means for comparing the position change amount of the marker, and when the difference between the position change amounts of the markers compared by the comparison means is larger than a predetermined value, an abnormality has occurred in the door opening / closing operation. Determination means for determining that there is no abnormality in the opening and closing operation of the door when the difference in position change amount of each marker compared by the comparison means is equal to or less than a predetermined value;
Passengers who check the image in the car taken by the camera and detect whether there are passengers in the car when the judging means judges that an abnormality has occurred in the opening / closing operation of the door Detecting means,
The passenger detection means, if the determination means determines that an abnormality has occurred in the opening and closing operation of the door, if the passenger is not detected from the image in the car taken by the camera, An elevator door diagnostic apparatus characterized in that it is determined that an abnormality in the opening / closing operation is not caused by a passenger . In the elevator door diagnostic apparatus according to claim 1,
The said door of the said detection apparatus contains the 1st marker provided in the front among the said doors, and the 2nd marker provided in the side surface among the said doors, The door diagnostic apparatus of the elevator characterized by the above-mentioned. Provided in the elevator is provided with a detection device that detects an abnormality that has occurred in the door that can be opened and closed. The detection device includes a marker provided on the door, and an image acquisition device that acquires an image of the door including the marker. An image analysis device that detects the position of the marker based on the image acquired by the image acquisition device and analyzes the presence / absence of an operation abnormality occurring in the door based on the detected position of the marker. ,
The image acquisition device is provided at a position where the marker can be photographed in a car of the elevator, and includes a camera that photographs the marker and a passenger in the car. The position change amount of the marker per unit time in the door opening / closing operation in a normal state in which no abnormality has occurred in the door opening / closing operation, and per unit time when the door opening / closing operation is performed An abnormality has occurred in the opening / closing operation of the door when the difference between the position change amount of each marker compared with the comparison means comparing the position change amount of the marker with the comparison means is larger than a predetermined value. And the door opening / closing operation is abnormal when the difference in the positional change amount of each marker compared by the comparing means is equal to or less than a predetermined value. If the determination means determines that the door is not open and the determination means determines that an abnormality has occurred in the opening / closing operation of the door, the image in the car taken by the camera is confirmed and the In an elevator door diagnostic method used in an elevator door diagnostic device including passenger detection means for detecting whether there are passengers in a car,
After the image acquisition device acquires the image of the door including the marker, the comparison means of the image analysis device is based on the image when the door is in a normal state in which no abnormality has occurred in the opening / closing operation. Comparing the position change amount of the marker per unit time in the opening and closing operation of the door with the position change amount of the marker per unit time when the door opening and closing operation is performed;
The determination means determines that an abnormality has occurred in the opening / closing operation of the door when the difference in position change amount of each marker compared by the comparison means is larger than a predetermined value, and the comparison means It is determined that no abnormality has occurred in the opening / closing operation of the door when the difference in the positional change amount of each marker compared is equal to or less than a predetermined value,
The passenger detection means, if the determination means determines that an abnormality has occurred in the opening and closing operation of the door, if the passenger is not detected from the image in the car taken by the camera, A method for diagnosing an elevator door, characterized by determining that the abnormality of the opening / closing operation is not caused by a passenger. In the elevator door diagnostic method according to claim 3,
The marker of the detection device provided in the elevator door diagnostic device includes a first marker provided on a front surface of the door and a second marker provided on a side surface of the door. Elevator door diagnosis method characterized.

Images