JP2015020863A - Elevator long object inspection device and elevator long object inspection method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator long object inspection device capable of more accurately detecting that a long object is caught in a catch object.SOLUTION: An elevator long object inspection device detecting that a main rope 1 provided inside a hoistway 100 is caught in a catch object inside the hoistway 100 includes: a camera 7 provided in a car 2 vertically moving through the hoistway 100, and photographing an upper part such that the main rope 1 is included in an image; an image processor 81 performing image processing to extract a portion of the main rope 1 from the image photographed by the camera 7; and a determination device 82A determining whether or not the main rope 1 is caught in the catch object by use of the image after the processing that is the image performed with the image processing by the image processor 81.

Description

  The present invention relates to an elevator long object inspection device and an elevator long object inspection method for detecting that a long object provided in a hoistway is caught by a hooked object in the hoistway.

  2. Description of the Related Art Conventionally, a car is provided with a camera that captures the inside of a hoistway and an image monitoring apparatus main body that acquires an image of the camera, and the image monitoring apparatus main body newly captures an image previously captured by the camera and a camera. There is known an elevator monitoring device that detects that an abnormality has occurred in a hoistway by comparing the obtained image (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 9-286576

  However, since the image monitoring apparatus main body determines whether or not an abnormality has occurred in the hoistway using the camera image as it is, the image monitoring apparatus main body is changed depending on dirt, rust, or brightness change in the hoistway. There has been a problem that an abnormality in the hoistway may be erroneously detected.

  The present invention provides an elevator long object inspection device and an elevator long object inspection method capable of more accurately detecting that a long object is caught on an object to be caught.

  An elevator long object inspection device according to the present invention is an elevator long object inspection device that detects that a long object provided in a hoistway is caught by a catching object in the hoistway. A camera that is provided in a lifting body that moves up and down, and that captures an upper or lower part so that the long object is included in the image, and an image processing device that performs image processing for extracting a portion of the long object from the image captured by the camera And a determination device that determines whether or not the long object is caught on the object by using the processed image that has been subjected to image processing by the image processing device.

  An elevator long object inspection method according to the present invention is an elevator long object inspection method for detecting that a long object provided in a hoistway is caught by a catching object in the hoistway. The camera provided on the lifting body for moving up and down takes a photographing step for photographing the upper or lower part so that the long object is included in the image, and the image processing apparatus for the image photographed in the photographing step The determination device determines whether the long object is caught by the object by using the image processing process for performing the image processing to be extracted and the processed image that has been subjected to the image processing in the image processing process. And a determination step.

  According to the elevator long object inspection device according to the present invention, a camera that is provided on a lifting body that ascends and descends a hoistway and that captures an upper or lower part so that the long object is included in the image, and an image captured by the camera. Whether or not a long object is caught on an object using an image processing apparatus that performs image processing for extracting a part of a long object and a post-processing image that is an image processed by the image processing apparatus Therefore, it is possible to reduce the occurrence of erroneous detection when there is dirt, rust, or brightness change in the hoistway. As a result, it is possible to more accurately detect that the long object is caught on the object.

  According to the elevator long object inspection method according to the present invention, the camera provided on the lifting body that moves up and down the hoistway photographs the upper part or the lower part so that the long object is included in the image, and the photographing process. The image processing apparatus performs image processing for extracting a portion of the long object from the image photographed in step 1, and a post-processing image that is an image processed in the image processing process. The determination device determines whether or not the object is caught on the object and reduces the occurrence of false detection when there is dirt, rust, or brightness change in the hoistway. Can be made. As a result, it is possible to more accurately detect that the long object is caught on the object.

It is a side view which shows the elevator which concerns on Embodiment 1 of this invention. It is a block diagram which shows the elevator control panel and elevator long thing inspection apparatus of FIG. It is a figure which shows the image image | photographed when the camera of FIG. 1 was normal. It is a figure which shows the image which the camera image | photographed when the camera reaches the same position as FIG. 3, and when the main rope is hooked and it is hooked on the target object. FIG. 4 is a diagram illustrating an image captured when the camera is normal when the camera reaches a position above the position of the camera in FIG. 3. It is a figure which shows the image which the camera image | photographed when the camera reaches the same position as FIG. 5, and when the main rope is hooked and it is hooked on the target object. It is a flowchart which shows operation | movement of the elevator which performs the diagnostic driving | operation of FIG. It is a block diagram which shows the elevator long thing inspection apparatus which concerns on Embodiment 2 of this invention. It is a block diagram which shows the elevator long thing inspection apparatus which concerns on Embodiment 3 of this invention. It is a figure which shows the image image | photographed when the camera of FIG. 9 was normal. It is a figure which shows the image which the camera image | photographed when the camera reached the position above the position of the camera in FIG. It is a figure which shows the image which the camera image | photographed when the camera reaches the same position as FIG. 10, and when the main rope is hooked and it is hooked on the target object. It is a figure which shows the image which the camera image | photographed when the camera reached the position above the position of the camera in FIG. It is a block diagram which shows the elevator long thing inspection apparatus which concerns on Embodiment 4 of this invention. It is a figure which shows the image image | photographed when the camera of FIG. 14 was normal. It is a figure which shows the image which the camera image | photographed when the camera reached the position above the position of the camera in FIG. It is a figure which shows the image which the camera image | photographed when the camera reaches the same position as FIG. 15 and the main rope is hooked and caught on the object. It is a figure which shows the image which the camera image | photographed when the camera reached the position above the position of the camera in FIG.

Embodiment 1 FIG.
1 is a side view showing an elevator according to Embodiment 1 of the present invention. In the figure, the elevator is supported by the main rope (long object) 1 whose both ends are connected to the ceiling portion of the hoistway 100, the car (elevating body) 2 supported by the main rope 1, and the main rope 1. The balance weight (elevating body) 3, the hoisting machine 4 provided in the machine room 200, around which the main rope 1 is wound, and the main rope provided in the machine room 200 by being displaced from the hoisting machine 4 in the horizontal direction 1 is provided with a deflecting wheel 5 on which 1 is wound, and an elevator control panel 6 for controlling the driving of the hoisting machine 4. When the hoisting machine 4 is driven, the main rope 1 moves, and the car 2 and the counterweight 3 move up and down the hoistway 100 in opposite directions.

  The car 2 includes a car body 21 and a pair of car suspension wheels 22 that are rotatably provided at the lower part of the car body 21. The main rope 1 is wound around a car suspension wheel 22. The car 2 is supported by the main rope 1 by the main rope 1 being wound around the car suspension wheel 22. The pair of car suspension wheels 22 may be provided on the upper part of the car body 21.

  The counterweight 3 includes a counterweight main body 31 and a counterweight suspension wheel 32 that is rotatably provided on the upper portion of the counterweight main body 31. The main rope 1 is wound around a counterweight suspension wheel 32. The counterweight 3 is supported by the main rope 1 by the main rope 1 being wound around the counterweight suspension wheel 32.

  Further, the elevator includes a camera 7 provided on the upper part of the car 2 and an inspection device body 8 provided on the upper part of the car 2 for acquiring an image taken by the camera 7. The camera 7 and the inspection device main body 8 constitute an elevator long object inspection device.

  The camera 7 photographs the upper portion so that the portion of the main rope 1 positioned above the car 2 is included in the image.

  FIG. 2 is a block diagram showing the elevator control panel 6 and the elevator long article inspection device of FIG. The inspection apparatus main body 8 includes an image processing apparatus 81 that acquires an image captured by the camera 7, and a determination apparatus 82A that determines whether or not the main rope 1 (FIG. 1) is caught by a hooked object in the hoistway 100. And have.

  The image processing device 81 performs image processing for extracting the portion of the main rope 1 from the image photographed by the camera 7. Specifically, the image processing device 81 extracts only the portion of the main rope 1 from the image taken by the camera 7. As an image extraction method for the main rope 1 part, in the image taken by the camera 7, the boundary between the main rope 1 background part and the main rope 1 part is specified, so that the main rope 1 part is extracted. There is a method of extracting an image. The method for extracting the image of the main rope 1 is not limited to this, and other methods may be used. The image processing device 81 sends a processed image, which is an image subjected to image processing, to the determination device 82A. Note that the image processing apparatus 81 is not limited to the main rope 1 portion, and other portions may be extracted together.

  The determination device 82 </ b> A stores a processed image for an image previously captured by the camera 7. That is, the determination device 82A stores a processed image for an image photographed by the camera 7 at the normal time. When performing the diagnostic operation, the elevator control panel 6 sequentially moves the car 2 to a plurality of positions set in advance in the ascending / descending direction. The camera 7 moves as the car 2 moves. The determination device 82 </ b> A stores a processed image of an image captured in advance by the camera 7 for each of a plurality of positions of the camera 7 set in advance in the ascending / descending direction.

  FIG. 3 is a diagram showing an image captured by the camera 7 of FIG. 1 in a normal state, and FIG. 4 is a camera when the camera 7 reaches the same position as FIG. 3 and the main rope 1 is caught on the object. 7 is a view showing an image taken, FIG. 5 is a view showing an image taken when the camera 7 is normal when the camera 7 reaches a position above the position of the camera 7 in FIG. 3, and FIG. 5 is a diagram illustrating an image captured by the camera 7 when the camera 7 reaches the same position as 5 and the main rope 1 is caught on an object. In FIG. 4, the main rope 1 is caught on the object to be caught at point A, and in FIG. 6, the main rope 1 is caught on the object to be caught on point B. The camera 7 captures images at a plurality of positions set in advance in the ascending / descending direction as the car 2 moves in the ascending / descending direction.

  The determination device 82A compares the processed image for the image previously captured by the camera 7 with the processed image for the image newly captured by the camera 7 during the diagnostic operation, thereby moving the main rope 1 up and down. It is determined whether or not the object to be caught in the road 100 is caught.

  Specifically, the determination device 82A compares the image of the main rope 1 portion of FIG. 3 with the image of the main rope 1 portion of FIG. 4, and compares the image of the main rope 1 portion of FIG. The image of the main rope 1 part is compared. If there is a difference between the processed image for the image previously captured by the camera 7 and the processed image for the image newly captured by the camera 7 during the diagnostic operation, the determination device 82A is It is determined that the rope 1 is caught on the object to be caught in the hoistway 100, and after the processing for the image taken in advance by the camera 7 and the processing for the image newly taken by the camera 7 during the diagnostic operation. When there is no difference between the image and the image, it is determined that the main rope 1 is not caught on the object to be caught in the hoistway 100.

  If there is a difference between the processed image for the image previously captured by the camera 7 and the processed image for the image newly captured by the camera 7, the determination device 82 </ b> A catches the main rope 1. An abnormal signal indicating that the object is caught is transmitted to the elevator control panel 6. On the other hand, the determination device 82 </ b> A is configured to perform processing between the processed image for the image previously captured by the camera 7 and the processed image for the image newly captured by the camera 7 at all positions set in advance in the ascending / descending direction. If there is no difference, the determination device 82A transmits a normal signal to the elevator control panel 6 indicating that the main rope 1 is caught and not caught by the object.

  Next, the operation of the elevator that performs the diagnostic operation will be described. FIG. 7 is a flowchart showing the operation of the elevator that performs the diagnostic operation of FIG. First, the car 2 starts to move up and down, and when the camera 7 reaches a preset position, the camera 7 images the inside of the hoistway 100 (imaging process) (step S101). The photographing process is performed while the car 2 is moving up and down. That is, the photographing process is performed in a car moving process in which the car 2 moves up and down. The photographing process may be performed while the car 2 is stopped.

  Thereafter, the image processing apparatus 81 performs image processing for extracting the portion of the main rope 1 from the image taken by the camera 7 (image processing step) (step S102).

  Thereafter, the determination device 82A determines whether or not the main rope 1 is caught on the object to be caught using the post-processing image subjected to the image processing by the image processing device 81 (determination step) (step S103).

  In step S103, when the determination device 82A determines that the main rope 1 is hooked and is caught by the object, the determination device 82A sends an abnormal signal to the elevator control panel 6 (abnormal signal transmission step) (step S104). Diagnosis operation ends.

  On the other hand, when the determination device 82A determines in step S103 that the main rope 1 is caught and is not caught by the object, the elevator control panel 6 determines whether the camera 7 has reached all the positions set in advance in the ascending / descending direction. (Inspection end determination) (step S105).

  In step S105, when the elevator control panel 6 determines that the camera 7 has reached all preset positions in the ascending / descending direction, the determination device 82A sends a normal signal to the elevator control panel 6 (normal signal transmission step) ( Step S106), the elevator diagnostic operation ends.

  On the other hand, if the elevator control panel 6 determines that there is a position that the camera 7 has not yet reached among all the positions in the ascending / descending direction in step S105, the process returns to step S101.

  As described above, according to the elevator long object inspection apparatus according to Embodiment 1 of the present invention, the upper side is photographed so that the main rope 1 is included in the image provided in the car 2 that moves up and down the hoistway 100. An image processing device 81 that performs image processing for extracting a portion of the main rope 1 from an image photographed by the camera 7, and a processed image that is an image processed by the image processing device 81. And a determination device 82A for determining whether or not the main rope 1 is caught on an object to be caught, so that a false detection occurs when there is dirt, rust, or brightness change in the hoistway 100. Can be reduced. As a result, it can be detected more accurately that the main rope 1 is caught and caught on the object.

  Further, the determination device 82A extracts a processed image obtained by extracting a portion of the main rope 1 from an image previously captured by the camera 7, and a processed image obtained by extracting a portion of the main rope 1 from an image newly captured by the camera 7. , It is determined whether or not the main rope 1 is caught on the object to be caught. Therefore, it is possible to detect that the main rope 1 is caught on the object to be caught with a simple configuration.

  In addition, the camera 7 captures images at a plurality of positions in the ascending / descending direction as the car 2 moves in the ascending / descending direction, and the image processing device 81 extracts the portion of the main rope 1 for each image captured by the camera 7. The determination device 82A determines whether or not the main rope 1 is caught on the object to be caught by using each processed image subjected to the image processing by the image processing device 81. The camera 7 can be brought close to the portion of the main rope 1 that is hooked on the object to take an image. As a result, it can be detected more accurately that the main rope 1 is caught and caught on the object.

  Moreover, according to the elevator long thing inspection method which concerns on Embodiment 1 of this invention, the camera 7 provided in the cage | basket | car 2 which raises / lowers the hoistway 100 image | photographs upper direction so that the main rope 1 may be included in an image. An image processing step in which the image processing apparatus 81 performs image processing for extracting a portion of the main rope 1 for the image captured in the imaging step, and a post-processing image that has been subjected to image processing in the image processing step The determination device 82 </ b> A uses the image to determine whether or not the main rope 1 is hooked and caught on the object, so that there is dirt, rust, or brightness change in the hoistway 100. As a result, it is possible to more accurately detect that the main rope 1 is caught on the object to be caught.

Embodiment 2. FIG.
FIG. 8 is a block diagram showing an elevator long article inspection device according to Embodiment 2 of the present invention. The determination device 82B determines whether the main rope 1 is in the hoistway 100 based on whether the shape of the image of the main rope 1 portion in the processed image that has been subjected to image processing by the image processing device 81 is linear. It is determined whether or not the object is caught. Therefore, the determination device 82B does not store a post-processing image for an image previously captured by the camera 7. Other configurations are the same as those in the first embodiment.

  As described above, according to the elevator long object inspection device according to Embodiment 2 of the present invention, the determination device 82B is a part of the main rope 1 in the post-processing image in which the image processing is performed by the image processing device 81. Since it is determined whether or not the main rope 1 is caught on the object to be caught based on whether or not the shape of the image is a straight line, a post-processing image for the image previously captured by the camera 7 is determined. It is possible to detect that the main rope 1 is caught on the object to be caught without being stored in 82B.

Embodiment 3 FIG.
9 is a block diagram showing an elevator long article inspection device according to Embodiment 3 of the present invention, FIG. 10 is a diagram showing an image taken by the camera 7 in FIG. 9 in a normal state, and FIG. 11 is a diagram of the camera 7 in FIG. FIG. 12 is a view showing an image taken by the camera 7 when the camera 7 reaches a position above the position. FIG. 12 shows the case where the camera 7 reaches the same position as FIG. 10 and the main rope 1 is caught on the object. FIG. 13 is a diagram illustrating an image captured by the camera 7 when the camera 7 reaches a position above the position of the camera 7 in FIG. 12. In FIG. 12, the main rope 1 is caught on the object to be caught at point C, and in FIG. 13, the main rope 1 is caught on the object to be caught on point D. The determination device 82C superimposes the processed images of the pair of images captured by the camera 7 at positions different from each other in the ascending / descending direction, and the image of the portion of the main rope 1 in the one processed image and the other processing The angle with the image of the main rope 1 portion in the rear image is calculated. Further, the determination device 82C determines whether or not the main rope 1 is caught on the object to be caught using the calculated angle value.

  Specifically, the determination device 82C superimposes the processed images of the pair of images captured at positions adjacent to each other in the ascending / descending direction, and the image of the portion of the main rope 1 in the one processed image The angle between the other processed image and the image of the main rope 1 portion is calculated. When the main rope 1 is caught on an object to be caught, the angle between the image of the main rope 1 in one processed image and the image of the main rope 1 in the other processed image is The rope 1 is larger than the case where the rope 1 is caught and is not caught on the object. When the calculated angle value is within a preset range, the determination device 82C determines that the main rope 1 is not caught on the object to be caught, and the calculated angle value is within a preset range. When exceeding, it determines with the main rope 1 being caught and being caught on the target object. Other configurations are the same as those of the second embodiment.

  As described above, according to the elevator long article inspection device according to Embodiment 3 of the present invention, the determination device 82C has each processed image for a pair of images taken at different positions in the ascending / descending direction. And calculating the angle between the image of the main rope 1 portion in one processed image and the image of the main rope 1 portion in the other processed image, and using the calculated angle value, Since it is determined whether or not the main rope 1 is caught on the object to be caught, the main rope 1 is caught on the object to be caught without storing the processed image of the image previously captured by the camera 7 in the determination device 82C. Can be detected.

  In the third embodiment, the processed images of the pair of images taken at positions adjacent to each other in the ascending / descending direction are superimposed, and the image of the main rope 1 portion in one processed image and the other Although the configuration in which the angle between the processed image and the image of the main rope 1 portion is calculated has been described, a pair of images taken at different positions in the ascending / descending direction are not limited to positions adjacent to each other in the ascending / descending direction. A configuration in which the respective processed images of the images are overlapped to calculate an angle between the image of the main rope 1 portion in one processed image and the image of the main rope 1 portion in the other processed image If it is.

Embodiment 4 FIG.
14 is a block diagram showing an elevator long object inspection apparatus according to Embodiment 4 of the present invention, FIG. 15 is a diagram showing an image taken by the camera 7 of FIG. 14 in a normal state, and FIG. FIG. 17 shows an image taken by the camera 7 when the camera 7 reaches a position above the position. FIG. 17 shows a case where the camera 7 reaches the same position as FIG. FIG. 18 is a diagram illustrating an image captured by the camera 7 when the camera 7 reaches a position above the position of the camera 7 in FIG. 17. In FIG. 17, the main rope 1 is caught on the object to be caught at the point E, and in FIG. 18, the main rope 1 is caught on the object to be caught on the point F. The determination device 82D superimposes the processed image for the image previously captured by the camera 7 and the processed image for the image newly captured by the camera 7 for each position captured by the camera 7. The angle between the image of the main rope 1 portion in one processed image and the image of the main rope 1 portion in the other processed image is calculated. Further, the determination device 82D determines whether or not the main rope 1 is caught on the object to be caught using the calculated angle values.

  Specifically, the determination device 82D determines, for each position captured by the camera 7, a processed image for an image previously captured by the camera 7 and a processed image for an image newly captured by the camera 7. Are overlapped to calculate an angle between the image of the main rope 1 portion in one processed image and the image of the main rope 1 portion in the other processed image. When the main rope 1 is caught on an object to be caught, the angle between the image of the main rope 1 in one processed image and the image of the main rope 1 in the other processed image is Compared to the case where the rope 1 is caught and is not caught on the object, the position changes with each position taken by the camera 7. If there is a difference between the calculated angle values, the determination device 82D determines that the main rope 1 is caught on the object to be caught in the hoistway 100, and the calculated angle values are different. When there is no point, it is determined that the main rope 1 is not caught on the object to be caught in the hoistway 100. Other configurations are the same as those in the first embodiment.

  As described above, according to the elevator long article inspection device according to the fourth embodiment of the present invention, the determination device 82D determines the image previously captured by the camera 7 for each position captured by the camera 7. The processed image and the processed image of the image newly taken by the camera 7 are overlapped, and the image of the main rope 1 portion in one processed image and the portion of the main rope 1 in the other processed image The angle between the main rope 1 and the target object is determined using the calculated angle values, so that it is determined whether or not the main rope 1 is caught on the target object. It can be detected more accurately.

  In each of the above embodiments, the main rope 1 has been described as an example of a long object, but a balance rope, a governor rope, a tail cord, or the like may be used.

  Moreover, although each said embodiment demonstrated the structure which the camera 7 image | photographs upper direction, the structure which the camera 7 image | photographs the downward direction may be sufficient. In this case, the camera 7 is provided below the car 2.

  In each of the above embodiments, the configuration in which the camera 7 is provided in the car 2 has been described. However, the camera 7 may be provided in the counterweight 3.

  In each of the above embodiments, the 2: 1 roping elevator has been described. However, the present invention is not limited thereto, and for example, a 1: 1 roping elevator may be used.

  1 main rope (long object), 2 car (elevating body), 3 counterweight (elevating body), 4 hoisting machine, 5 baffle, 6 elevator control panel, 7 camera, 8 inspection device body, 21 car body, 22 Car suspension vehicle, 31 Balance weight body, 32 Balance weight suspension vehicle, 81 Image processing device, 82A, 82B, 82C, 82D Determination device, 100 hoistway, 200 Machine room.

Claims (7)

An elevator long object inspection device that detects that a long object provided in a hoistway is caught by a hooked object in the hoistway,
A camera that is provided on a lifting body that ascends and descends the hoistway, and that captures the upper or lower part so that the long object is included in the image;
An image processing apparatus for performing image processing for extracting a portion of the long object from an image photographed by the camera;
A determination device that determines whether or not the long object is caught on the object to be caught using a post-processing image that is an image on which the image processing has been performed by the image processing device. Elevator long object inspection device.   The determination apparatus compares the post-processing image with respect to the image previously captured by the camera and the post-processing image with respect to the image newly captured by the camera, so that the long object is caught. The elevator long object inspection device according to claim 1, wherein it is determined whether or not the object is caught.   The determination device determines whether or not the long object is caught by the hooked object based on whether or not the shape of the image of the long object in the processed image is linear. The elevator long article inspection device according to claim 1, wherein The camera shoots at a plurality of positions in the lifting direction by moving the lifting body in the lifting direction,
The image processing device performs the image processing on each image captured by the camera,
The said determination apparatus determines whether the said elongate object is caught on the said catch target object using each said post-process image, The any one of Claim 1- Claim 3 characterized by the above-mentioned. Elevator long object inspection device as described in the paragraph. The camera shoots at a plurality of positions in the lifting direction by moving the lifting body in the lifting direction,
The image processing device performs the image processing on each image captured by the camera,
The determination device superimposes the processed images of a pair of images taken at positions different from each other in the ascending / descending direction, and the image of the portion of the long object in the one processed image and the other Calculating an angle between the image of the long object in the processed image and determining whether the long object is caught on the object to be caught using the calculated angle value; The elevator long article inspection device according to claim 1. The camera shoots at a plurality of positions in the lifting direction by moving the lifting body in the lifting direction,
The image processing device performs the image processing on each image captured by the camera,
The determination apparatus superimposes the processed image on the image previously captured by the camera and the processed image on the image newly captured by the camera for each position captured by the camera. Calculating the angle between the image of the long object part in one of the processed images and the image of the long object part in the other processed image, and calculating each angle value The elevator long object inspection apparatus according to claim 1, wherein it is determined whether or not the long object is caught on the object to be caught. It is an elevator long object inspection method for detecting that a long object provided in a hoistway is caught by an object to be caught in the hoistway,
An imaging process in which a camera provided on an elevating body that ascends and descends the hoistway shoots the upper side or the lower side so that the long object is included in the image;
An image processing step in which an image processing device performs image processing for extracting a portion of the long object with respect to an image photographed in the photographing step;
A determination step of determining whether or not the long object is caught on the object to be caught using a post-processing image that is an image on which the image processing has been performed in the image processing step. Elevator long object inspection method characterized by this.

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