JP2006062796A - In-hoistway dimension measurement device for elevator and in-hoistway preliminary investigation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-hoistway dimension measurement device for an elevator in which a worker easily and safely measures a shape in the hoistway and can certainly grasp it. <P>SOLUTION: The in-hoistway dimension measurement device for the elevator is provided with a laser slit projector 25 for continuously irradiating a laser slit light L from a car 3 toward an inner wall of the hoistway 1 during moving the car 3 of the elevator up and down in the hoistway 1; a CCD camera 26 for photographing the laser slit light L generated inside the hoistway 1 and arranged on a laser irradiation surface L1 at a predetermined angle; a height position detection means 30 for detecting a height position of the car 3; and an image processing means and a calculation means for numerating the shape in the hoistway 1 at a position of the laser slit light L based on image information obtained by the CCD camera 26. The CCD camera 26 repeatedly performs photographing at a predetermined time interval and enables three-dimensional display of the obtained image information based on a flat surface value having three-dimensional information by the information of the height position by the image processing means, the calculation means and the height position detection means. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elevator hoistway dimension measuring apparatus for measuring a shape in an elevator hoistway and a hoistway pre-investigation method.

  Conventionally, when replacing or refurbishing an elevator, as an advance preparation stage, the situation in the elevator hoistway is accurately grasped, and the dimensions of each part necessary for drawing drawings in the elevator hoistway are measured. It is. As shown in FIG. 8, the worker 2 enters the hoistway 1 and gets on the car 3, and the worker 2 moves up and down using the laser distance meter 4 and the measure 5 on the car 3. This is done by actually measuring the dimensions of each part in the road 1.

  However, in such a means, since the worker 2 gets on the elevator car 3, not only does it require a great deal of labor and time, especially when the measurement distance is long, but also the worker There are cases where 2 has to step up and measure, which can lead to unexpected risks. In addition, since the operator 2 manually measures each point in the hoistway 1 one by one, it is very difficult to grasp the shape in the hoistway 1 three-dimensionally and continuously. Become.

  The present invention has been made paying attention to such points, and the object of the present invention is to provide an elevator hoistway that allows an operator to easily and safely measure the shape of the hoistway and accurately grasp it. An object is to provide an internal dimension measuring device and a prior investigation method in a hoistway.

  According to the first aspect of the present invention, there is provided a laser slit projector for continuously irradiating laser slit light from the car toward the inner wall of the hoistway while the elevator car is raised and lowered in the hoistway, and a laser generated inside the hoistway. An image pickup means arranged at a predetermined angle with respect to a laser irradiation surface for photographing slit light, a height position detection means for detecting a height position of the car, and the laser based on image information acquired by the image pickup means. An image processing means and a calculation means for digitizing the shape in the hoistway at the position of the slit light, the imaging means repeats photographing at a predetermined time interval, and the acquired image information is image processing means and calculation means The three-dimensional display based on the plane value having the three-dimensional information with the height position information by the height position detecting means is made possible.

  The invention according to claim 2 is characterized in that the plane value can be combined and displayed on one surface in the ascending / descending direction of the car.

  The invention according to claim 3 is characterized in that the three-dimensional display or the tomographic display along the ascending / descending direction of the car is possible.

  The invention of claim 4 is characterized in that arbitrary plane values can be individually displayed from the three-dimensional display or height position information.

  The invention of claim 5 is characterized in that the overlay display, tomographic display, individual display, and the required value in the hoistway of the replacement elevator can be displayed in comparison with each display form.

  According to a sixth aspect of the present invention, the laser slit projector is disposed above the image pickup means, and the laser slit projector and the image pickup means are provided on a pole as a structure standing upright to a laser irradiation surface. Is supported by a base on the car and can be rotated by a rotation mechanism around an axis perpendicular to the laser irradiation surface.

  The invention according to claim 7 is characterized in that the rotation mechanism is a motor and has a control means for controlling the motor.

  The invention according to claim 8 is characterized in that the base supporting the pole is installed on a car via a leg.

  The invention according to claim 9 is characterized in that the height position detecting means is disposed above the car and operates integrally with the car in contact with a guide rail for guiding the raising and lowering of the car.

  According to the invention of claim 10, in the preliminary investigation in the hoistway for determining the fit of the replacement elevator with respect to the elevator hoistway, the superposition display, tomographic display, individual display, or the superposition display, tomographic display, individual display In addition, it is characterized in that the required value in the hoistway is discriminated by comparing and displaying in accordance with each display form.

  According to the present invention, the operator can easily and safely measure the shape in the hoistway and grasp it easily.

  An embodiment of the present invention will be described below with reference to FIGS.

  As shown in FIG. 1, an elevator hoistway 1 is provided with a car 3 and a pair of guide rails 10 arranged so as to extend vertically on both sides of the car 3. The car 3 has a car frame 11, and a guide device 12 that engages with the guide rail 10 is provided on the car frame 11, and the car 3 moves up and down along the guide rail 10 by a guide by the guide device 12. It is like that.

  On the front surface of the car 3, a door device 15 that opens and closes the doorway 14 of the car 3 and a door driving device 16 that supports and drives the door device 15 are provided. Reference numeral 17 denotes a threshold for guiding the opening / closing operation of the door device 15.

  A base 21 is provided horizontally on the ceiling plate 20 of the car 3, and a pole 22 is provided so as to stand vertically at the center of the base 21. As shown in FIG. 2, the pole 22 is rotatably supported with respect to the base 21, and is driven to rotate by a motor 23 as a rotation mechanism provided in the base 21.

  A laser slit projector 25 that irradiates the laser slit light L horizontally toward the inner wall of the hoistway 1 is attached to the top of the pole 22. A CCD camera 26 is attached to the lower portion of the pole 22 as a photographing means for photographing the laser slit light L emitted toward the inner wall of the hoistway 1. The CCD camera 26 is attached to the pole 22 so as to face a predetermined angle α, for example, an angle of 30 ° with respect to the laser irradiation surface L1 of the laser slit light L irradiated by the laser slit projector 25.

  The pole 22 rotates about an axis perpendicular to the laser irradiation surface L1 of the laser slit light L, and the rotation axis is located near the lens focal point of the CCD camera 26.

  The car 3 is provided with a height position detecting means 30, and the height position detecting means 30 is in contact with the guide rail 10 and rotates in accordance with the up and down movement of the car 3, and in conjunction with the roller 31. It consists of a rotary encoder 32 that rotates to detect the height position of the car 3 and a housing 33 that supports them.

  The guide rail 10 continuously extends from the lowermost part of the hoistway 1 to the uppermost part without interruption, and the surface with which the roller 31 abuts is finished smoothly by machining, and the roller 31 rotates smoothly as the car 3 moves up and down. To do.

  The height position detection means 30 is disposed on the guide device 12 above the car 3. Since the laser slit projector 25 and the CCD camera 26 are disposed on the car 3, it is convenient to position the height position detecting means 30 above the car 3 accordingly.

  The base 21 is mounted on the ceiling plate 20 of the car 3 via a plurality of legs 34, and a part of the lighting device 35 and the ventilation device 36 protruding above the ceiling plate 20 is in the space below the base 21. Thus, the laser slit light L emitted from the laser slit projector 25 can be appropriately irradiated toward the inner wall of the hoistway 1 without being obstructed by the illumination device 35 and the ventilation device 36.

  The car 3 is provided with a computer 40, and the computer 40 is provided with a control means 43 for controlling the motor 23 together with an image processing means 41 and a calculation means 42.

  When measuring the shape in the hoistway 1, the laser slit light L continues from the laser slit projector 25 toward the inner wall of the hoistway 1 including the guide rail 10 while the car 3 moves up and down in the hoistway 1. Is irradiated.

  The laser slit light L generated inside the hoistway 1 is photographed by the CCD camera 26. The pole 22 supporting the laser slit projector 25 and the CCD camera 26 is driven and rotated by a motor 23, and this rotation irradiates the laser slit light L in all directions (360 °) in the hoistway 1 and the laser slit. The light L is photographed by the CCD camera 26.

  There are fish-eye lenses on the market that can shoot in all directions at once, but in order to support fish-eye lenses, it is necessary to irradiate laser slit light in all directions, and multiple laser slit projectors are necessary and expensive equipment. It becomes. In this embodiment, since the rotation angle can be set, the number of laser slit projectors 25 and CCD cameras 26 can be made suitable for measurement, and an inexpensive apparatus can be realized.

  The laser slit projector 25 and the CCD camera 26 are attached to a pole 22 having a certain height. For this reason, the article related to the guide rail 10 is moved up and down without being obstructed by the door driving device 16 or the car frame 11. The laser slit light L can be appropriately irradiated into the path 1, and the laser slit light L can be properly photographed by the CCD camera 26.

  As shown in FIG. 3, the image information 49 of the laser slit light L acquired by the CCD camera 26 is digitized as information related to the shape in the hoistway 1 by the image processing means 41 and the calculation means 42.

  The CCD camera 26 repeats photographing at predetermined time intervals, and the image information 49 acquired by each photographing is three-dimensional with the image processing means 41, the calculating means 42, and the height position information 57 by the height position detecting means 30. As shown in FIG. 4, the shape of the hoistway 1 is stored as a plane value 55 relating to the shape having information, and is displayed by a three-dimensional three-dimensional display 58. As a result, the dimensions of each part in the hoistway 1 can be set as in the conventional case. Without measuring with the laser distance meter 3 or the measure 4, without requiring a lot of labor for the worker 2 and without taking the dangerous work of getting out and measuring, it is grasped three-dimensionally and continuously. Can do.

  As a means for discriminating the positional relationship between the inside of the hoistway 1 and the replacement elevator, as shown in FIG. 5, the plane value 55 is synthesized on one surface in the ascending / descending direction 59 of the car 3 to display the superimposed display 50. . By overlapping, a plurality of plane values 55 can be integrated into one, the minimum hoistway shape value 51 can be easily derived, and the positional relationship with the replacement elevator can be easily grasped.

  In addition, as shown in FIG. 6, a three-dimensional display 58 or a continuous plane value 55 is represented by a plane along the ascending / descending direction 59 of the car 3 to form a tomographic display 52, thereby a hoistway along the ascending / descending direction 59 of the car 3. The situation in 1 can be expressed, and it is useful for examining the installation of the guide rail of the replacement elevator.

  Further, as shown in FIG. 7, the arbitrary plane value 55 is individually displayed 53 from the three-dimensional display 58 or the height position information 57, and the situation can be grasped in detail by expressing the arbitrary plane value 55 individually. Accuracy can be further improved.

  Further, the overlay display 50, the tomographic display 52, the individual display 53, and the required value 54 in the hoistway of the replacement elevator are displayed in comparison with the display form, so that the position of the replacement elevator and the hoistway 1 is changed. The situation of the relationship can be grasped in detail, and the accuracy of the examination can be improved.

  Further, by the superimposed display 50, tomographic display 52, and individual display 53, or in addition to the superimposed display 50, tomographic display 52, and individual display 53, the required value 54 in the hoistway is compared and displayed in accordance with each display form. It is also possible to determine the positional relationship between the hoistway 1 and the replacement elevator, the situation in the hoistway 1 can be confirmed by the display means, and the situation where a worker who has been forced to measure is taken and measured Therefore, it is possible to provide an environment in which measurement errors and measurement omissions do not occur. And for the re-measurement, the elevator is not stopped and the customer service is improved.

  In the above-described embodiment, the pole 22 is driven by a rotation mechanism using a motor. However, the pole 22 may be rotated by manual driving provided with a stop mechanism that stops rotation within a predetermined range. .

1 is a perspective view of a hoistway dimension measuring apparatus according to an embodiment of the present invention. The side view of the measuring device. Explanatory drawing which shows the flow of the image storage in the measuring device. Explanatory drawing about the three-dimensional display of the hoistway by image processing. Explanatory drawing about the overlay display of the hoistway by image processing. Explanatory drawing about the tomographic display of the hoistway by image processing. Explanatory drawing about the individual display of the arbitrary plane values of the hoistway by image processing. Explanatory drawing for demonstrating the prior art.

Explanation of symbols

L ... Laser slit light L1 ... Laser irradiation surface 1 ... Hoistway 3 ... Car 10 ... Guide rail 12 ... Guide device 15 ... Door device 16 ... Door drive device 20 ... Ceiling plate 21 ... Base 22 ... Pole 23 ... Motor 25 ... Laser Slit projector 26 ... CCD camera 30 ... Position detection means 31 ... Roller 32 ... Rotary encoder 34 ... Leg 40 ... Computer 41 ... Image processing means 42 ... Calculation means 43 ... Control means 50 ... Superposition display 51 ... Minimum hoistway shape value 52 ... Image information 52 ... Tomographic display 53 ... Individual display 54 ... Necessary value in hoistway 55 ... Plane value 58 ... Three-dimensional display

Claims (10)

A laser slit projector that continuously emits laser slit light from the car toward the inner wall of the hoistway while the elevator car is raised and lowered in the hoistway;
Imaging means disposed at a predetermined angle with respect to a laser irradiation surface for photographing laser slit light generated inside the hoistway;
Height position detecting means for detecting the height position of the car;
Image processing means and calculation means for digitizing the shape in the hoistway at the position of the laser slit light based on the image information acquired by the imaging means,
The imaging means repeats photographing at a predetermined time interval, and the acquired image information is three-dimensionally displayed based on a plane value having three-dimensional information with height position information by the image processing means, calculation means, and height position detecting means. An elevator hoistway dimension measuring apparatus characterized by that.   2. The elevator hoistway dimension measuring apparatus according to claim 1, wherein the plane values are combined and displayed in one plane in a car ascending / descending direction.   2. The elevator hoistway dimension measuring apparatus according to claim 1, wherein the three-dimensional display or the continuous plane value can be displayed in a tomographic direction along a car ascending / descending direction.   2. The elevator hoistway dimension measuring apparatus according to claim 1, wherein an arbitrary plane value can be individually displayed from the three-dimensional display or height position information.   5. The overlay display / tomographic display / individual display and the required value in the hoistway of the replacement elevator can be compared and displayed in accordance with each display form. The elevator hoistway dimension measuring apparatus according to claim 1.   The laser slit projector is disposed above the imaging means, and the laser slit projector and the imaging means are provided on a pole as a structure standing upright to a laser irradiation surface, and the pole is a base on the cage. The elevator hoistway dimension measuring apparatus according to claim 1, wherein the elevator hoistway dimension measuring apparatus can be rotated by driving by a rotation mechanism about an axis perpendicular to the laser irradiation surface. 7. The elevator hoistway dimension measuring apparatus according to claim 6, wherein the rotating mechanism is a motor and has a control means for controlling the motor.   The elevator hoistway dimension measuring apparatus according to claim 7, wherein the base supporting the pole is installed on a car via a leg.   2. The elevator hoistway according to claim 1, wherein the height position detection unit is disposed above the car and operates integrally with the car in contact with a guide rail that guides the raising and lowering of the car. Dimension measuring device.   Required value in the hoistway in the preliminary survey in the hoistway to determine the fit of the replacement elevator in the elevator hoistway by the overlay display, fault display, individual display, or in addition to the overlay display, fault display, individual display A prior survey method in a hoistway characterized in that it is discriminated by a comparison display according to each display form.

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