WO2022176061A1 - Dispositif de mesure et dispositif élévateur - Google Patents

Dispositif de mesure et dispositif élévateur Download PDF

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Publication number
WO2022176061A1
WO2022176061A1 PCT/JP2021/005923 JP2021005923W WO2022176061A1 WO 2022176061 A1 WO2022176061 A1 WO 2022176061A1 JP 2021005923 W JP2021005923 W JP 2021005923W WO 2022176061 A1 WO2022176061 A1 WO 2022176061A1
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WIPO (PCT)
Prior art keywords
rope
distance
outer diameter
camera
light
Prior art date
Application number
PCT/JP2021/005923
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English (en)
Japanese (ja)
Inventor
康太郎 渡辺
直 藤原
敬太 望月
哲士 森川
佳子 大野
Original Assignee
三菱電機ビルテクノサービス株式会社
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 三菱電機ビルテクノサービス株式会社, 三菱電機株式会社 filed Critical 三菱電機ビルテクノサービス株式会社
Priority to JP2023500182A priority Critical patent/JP7276635B2/ja
Priority to CN202180093039.0A priority patent/CN116829901B/zh
Priority to PCT/JP2021/005923 priority patent/WO2022176061A1/fr
Publication of WO2022176061A1 publication Critical patent/WO2022176061A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters

Definitions

  • the present disclosure relates to a device for measuring the outer diameter of an elongated body and an elevator device.
  • Patent Document 1 describes a device for measuring the outer diameter of a wire rope.
  • the device described in Patent Literature 1 includes two cameras.
  • the device measures the outer diameter of the wire rope based on the image data from the two cameras.
  • Patent Document 1 requires two cameras to measure the outer diameter of the wire rope. Also, in order to simultaneously record and process image data from two cameras, the device requires high processing performance. Therefore, there is a problem that the device described in Patent Document 1 is expensive.
  • An object of the present disclosure is to provide an inexpensive measuring device capable of measuring the outer diameter of an elongated body.
  • Another object of the present disclosure is to provide an elevator system with the measuring device.
  • a measuring device includes a camera that captures an image of a long body along a first axis and outputs image data, and a camera that emits light that spreads over a first plane perpendicular to the first axis and measures a linear shape of the long body.
  • a first light source that irradiates light
  • an outer diameter calculation means for calculating the outer diameter of the elongated object on the image data, and a position of the light from the first light source on the image data, the distance from the camera to the elongated object
  • a distance calculating means for calculating the distance and a correcting means for correcting the outer diameter calculated by the outer diameter calculating means based on the distance are provided.
  • a measuring device includes a camera that captures an image of a long body along a first axis and outputs image data, and a camera that emits light that spreads over a first plane perpendicular to the first axis and measures a linear shape of the long body.
  • a first light source that irradiates light
  • a second light source that emits light that spreads on a second plane orthogonal to the first axis and irradiates linear light on the elongated body
  • the outer diameter of the elongated body on the image data is calculated.
  • a first distance from the camera to the elongated object on the first plane based on the position of the light from the first light source on the image data
  • the light from the second light source on the image data distance calculation means for calculating a second distance from the camera to the elongated body on the second plane based on the position of the tilt calculator for calculating the inclination angle of the elongated body based on the first distance and the second distance and correction means for correcting the outer diameter calculated by the outer diameter calculation means based on the first distance, the second distance, and the inclination angle.
  • An elevator apparatus includes a car, a rope for suspending the car on a hoistway, a drive sheave around which the rope is wound, and the measuring device for measuring the outer diameter of the rope.
  • a device for measuring the outer diameter of a long body can be realized at low cost.
  • FIG. 1 is a diagram showing an example of an elevator device according to Embodiment 1;
  • FIG. It is a figure which shows the example of a measuring apparatus.
  • FIG. 3 is a diagram showing a cross section taken along line AA of FIG. 2;
  • FIG. 4 is a diagram showing an example of an image captured by a camera;
  • FIG. It is a figure for demonstrating the function of an analysis apparatus.
  • 4 is a flow chart showing an operation example of the measuring device according to Embodiment 1.
  • FIG. It is a figure for demonstrating the function of a distance calculation part. It is a figure for demonstrating the function of a distance calculation part. It is a figure showing other examples of a measuring device. It is a figure showing other examples of a measuring device.
  • FIG. 1 is a diagram showing an example of an elevator device according to Embodiment 1.
  • the elevator system comprises a car 1 and a counterweight 2.
  • the car 1 moves up and down in the hoistway 3 .
  • a counterweight 2 moves up and down the hoistway 3 .
  • a cage 1 and a counterweight 2 are suspended by ropes 4 .
  • the rope 4 is a wire rope.
  • Fig. 1 shows a 1:1 roping elevator system.
  • the rope 4 is connected to the car 1 at one end.
  • a rope 4 extends upward from the car 1 .
  • the rope 4 is wound around the drive sheave 7 and the deflection sheave 8 of the hoisting machine 6 in the machine room 5 above the hoistway 3 .
  • a rope 4 extends downwardly from a deflector wheel 8 .
  • the other end of rope 4 is connected to counterweight 2 .
  • the car 1 moves according to the rotation of the drive sheave 7 .
  • the control device 9 controls the hoisting machine 6 . That is, movement of the car 1 is controlled by the control device 9 .
  • the communication device 10 is connected to the control device 9 .
  • the communication device 10 is a device for the elevator device to communicate with the outside.
  • the communication device 10 communicates with the outside via the network 11 .
  • the external includes remote monitoring centers and the like that monitor the elevator system.
  • FIG. 1 shows an example in which the hoist 6 and the control device 9 are installed in the machine room 5.
  • the hoisting machine 6 and the control device 9 may be installed in the hoistway 3 .
  • the hoisting machine 6 may be installed at the top of the hoistway 3 or may be installed in the pit of the hoistway 3 .
  • the drive sheave 7 and the deflector sheave 8 are examples of pulleys around which the rope 4 is wound.
  • the rope 4 is repeatedly bent by the pulley. Therefore, the rope 4 is worn by friction with the pulley and reduced in diameter. A reduction in the diameter of the rope 4 directly leads to a reduction in the strength of the rope 4 , so the elevator apparatus is provided with a measuring device 12 for measuring the outer diameter of the rope 4 .
  • FIG. 1 shows an example in which the measuring device 12 is provided in the machine room 5.
  • the measuring device 12 may be provided in the hoistway 3 .
  • the measuring device 12 measures the outer diameter of the portion of the rope 4 that is located immediately below the hoist 6 .
  • the reference numeral 4 is replaced with the reference numeral 4a. That is, the rope 4 a is the portion of the rope 4 that is arranged immediately below the hoist 6 .
  • Rope 4 a is part of rope 4 .
  • FIG. 2 is a diagram showing an example of the measuring device 12.
  • FIG. FIG. 3 is a diagram showing a cross section along line AA of FIG.
  • the measuring device 12 comprises a camera 13 , a light source 14 and an analysis device 15 .
  • the X-axis, Y-axis, and Z-axis are set as shown in FIGS. 2 and 3 for ease of explanation.
  • the X-axis, Y-axis, and Z-axis are orthogonal to each other.
  • the X-axis is vertical.
  • the YZ plane is horizontal and orthogonal to the X axis.
  • the rope 4a is arranged along the X-axis.
  • the camera 13 is a so-called area camera.
  • the Z-axis is set so as to be parallel to the central axis 13a of imaging by the camera 13. As shown in FIG.
  • the photographing range of the camera 13 spreads from the camera 13 centering on the central axis 13a.
  • the central axis 13a is orthogonal to the central axis Cr of the rope 4a.
  • the camera 13, as shown in FIGS. 2 and 3, photographs the rope 4a from the side.
  • the camera 13 has a light receiver 16 and a lens 17 .
  • the light receiver 16 comprises an image sensor (not shown).
  • the optical center C of the lens 17 is a point on the central axis 13a.
  • Camera 13 outputs image data obtained by light receiver 16 to analysis device 15 .
  • the light source 14 is a so-called line light source.
  • the light source 14 emits light so as to spread over the YZ plane, and illuminates the rope 4a with linear light when viewed from the Z-axis direction.
  • the light source 14 is arranged at a different height than the camera 13 . That is, the central axis 13a is not included in the YZ plane in which the light from the light source 14 spreads.
  • the light source 14 is arranged above the camera 13 . Therefore, the light from the light source 14 hits the rope 4a above the central axis 13a.
  • a distance (height) XA in the X-axis direction between the light emitted from the light source 14 and the center axis 13a is set in advance.
  • the reference numeral 14a is used when identifying the light emitted from the light source 14 that strikes the rope 4a. That is, the light 14a is light emitted from the light source 14 and hit the rope 4a.
  • the light source 14 illuminates the rope 4a from the same direction, or almost the same direction, as the camera 13 shoots the rope 4a.
  • the distance XA is set so that the light 14a is within the photographing range of the camera 13.
  • the image data from camera 13 includes data indicative of light 14a.
  • FIG. 4 is a diagram showing an example of an image captured by the camera 13.
  • the light from the light source 14 hits the rope 4a above the central axis 13a. Since the light 14a is captured by the camera 13 from below, the light 14a curves upward in the image captured by the camera 13 .
  • FIG. 5 is a diagram for explaining the functions of the analysis device 15.
  • the analysis device 15 includes an image analysis section 20 , an outer diameter calculation section 21 , a distance calculation section 22 and a correction section 23 .
  • the functioning of the measuring device 12 will be explained in detail, also with reference to FIGS. 6 to 8.
  • FIG. FIG. 6 is a flow chart showing an operation example of the measuring device 12 according to the first embodiment.
  • the analysis device 15 acquires image data from the camera 13 (S101).
  • the image data acquired by the analysis device 15 in S101 includes data representing the rope 4a and data representing the light 14a.
  • the outer diameter calculator 21 calculates the outer diameter of the rope 4a on the image data obtained from the camera 13 in S101. Specifically, first, the image analysis unit 20 performs threshold processing on the image data acquired from the camera 13 (S102). As a result, the image data is divided into the portion showing the rope 4a and the other portion. Next, the image analysis unit 20 performs edge detection processing on the threshold-processed image data (S103). Thereby, the left edge and the right edge of the rope 4a are specified. The outer diameter calculation unit 21 calculates the outer diameter of the rope 4a on the image data from the interval between the left edge and the right edge specified by the image analysis unit 20 (S104).
  • the outer diameter calculated in S104 is represented, for example, by the number of pixels w [pixels] between the left edge and the right edge.
  • the value calculated in S104 varies depending on the thickness of the rope 4a displayed in the image, that is, the imaging magnification. Therefore, the value calculated in S104 does not match the actual outer diameter of the rope 4a.
  • the rope 4a indicated by the dashed line shows a state closer to the camera 13 than the rope 4a indicated by the solid line.
  • the position of the rope 4a may change in the Z-axis direction as the position of the car 1 changes.
  • the rope 4a displayed in the image becomes larger when the rope 4a approaches the camera 13, and becomes smaller when the rope 4a separates from the camera 13.
  • the analysis device 15 has a function of correcting the calculation result of S104 using such a change in display.
  • the distance calculation unit 22 calculates the distance from the camera 13 to the rope 4a based on the position of the light 14a on the image data output from the camera 13.
  • 7 and 8 are diagrams for explaining the function of the distance calculator 22.
  • FIG. FIG. 7 is a diagram corresponding to FIG.
  • FIG. 8 is a diagram showing an example of an image captured by the camera 13. As shown in FIG. In the following, as shown in FIG. 8, the pixel position in the X-axis direction on the image is denoted by u.
  • the image analysis unit 20 extracts the light 14a from the image data acquired from the camera 13 (S105).
  • the distance calculator 22 calculates the distance from the camera 13 to the rope 4a, that is, the shooting distance, based on the principle of triangulation. is calculated from the following equation (S106).
  • the distance calculator 22 calculates the distance LA as the shooting distance.
  • XA is substituted for Xl
  • ul is the pixel position in the X-axis direction of the edge portion of the rope 4a irradiated with the light from the light source 14. It suffices to substitute u A [pixel].
  • the distance calculation unit 22 determines the pixel position uA based on the result extracted by the image analysis unit 20 in S105.
  • the correction unit 23 corrects the outer diameter (w [pixel]) of the rope 4a calculated by the outer diameter calculation unit 21 in S104 (S107).
  • the correction unit 23 performs correction based on the distance LA calculated by the distance calculation unit 22 in S106.
  • the correcting unit 23 corrects the magnification of the outer diameter of the rope 4a on the image data with the photographing distance by using the following equation to obtain the actual outer diameter W [mm] of the rope 4a.
  • the distance LA calculated in S106 may be substituted for L(X) in Equation (2).
  • the outer diameter W [mm] of the rope 4 can be calculated based on the image data from one camera 13.
  • the measuring device 12 can be realized at low cost.
  • FIG. 9 and 10 are diagrams showing other examples of the measuring device 12.
  • FIG. 9 is a diagram corresponding to FIG.
  • FIG. 10 is a diagram corresponding to FIG.
  • the explanation was given on the premise that the central axis Cr of the rope 4a is always parallel to the X-axis.
  • An example in which the inclination of the central axis Cr with respect to the X-axis is also taken into consideration will be described below.
  • the measurement device 12 further includes a light source 30 in addition to the camera 13, the light source 14, and the analysis device 15.
  • the measurement device 12 may further include illumination 31 and reflector 32 .
  • the light source 30 is a so-called line light source.
  • the light source 30 emits light so as to spread over the YZ plane, and irradiates the rope 4a with linear light when viewed from the Z-axis direction.
  • Light source 30 is positioned at a different height than camera 13 . That is, the central axis 13a is not included in the YZ plane in which the light from the light source 30 spreads.
  • the light source 30 is arranged at a height different from that of the light source 14 . That is, the YZ plane in which the light from the light source 30 spreads is different from the YZ plane in which the light from the light source 14 spreads.
  • the YZ plane in which the light from the light source 14 spreads is also referred to as the first YZ plane.
  • the YZ plane in which the light from the light source 30 spreads is also called the second YZ plane.
  • the light source 30 is arranged below the camera 13. Therefore, the light from the light source 30 hits the rope 4a below the central axis 13a.
  • a distance (height) XB in the X-axis direction between the light emitted from the light source 30 and the central axis 13a is set in advance.
  • the reference numeral 30a is used when identifying the light emitted from the light source 30 that strikes the rope 4a. That is, the light 30a is light emitted from the light source 30 and hit the rope 4a.
  • the light source 30 illuminates the rope 4a from the same direction or substantially the same direction as the direction in which the camera 13 photographs the rope 4a.
  • the distance XB is set so that the light 30a is within the photographing range of the camera 13.
  • the image data from the camera 13 includes both data representing the light 14a and data representing the light 30a.
  • the lighting 31 emits light toward the photographing range of the camera 13 from the same direction or substantially the same direction as the direction in which the camera 13 photographs the rope 4a.
  • the illumination 31 comprises LED lamps arranged in a ring.
  • the LED lamps provided in the illumination 31 are arranged around the central axis 13a.
  • the camera 13 photographs the rope 4a through a hole opened in the center of the illumination 31.
  • the reflector 32 has a retroreflective characteristic of reflecting incident light along the incident direction.
  • the reflector 32 is arranged parallel to the XY plane.
  • the reflector 32 is arranged on the back side of the rope 4a as seen from the camera 13. - ⁇ That is, the rope 4a is arranged between the camera 13 and the reflector 32.
  • Light from the illumination 31 travels along the Z-axis after being reflected by the reflector 32 .
  • the light emitted from the illumination 31 that strikes the rope 4a is reflected in various directions by the rope 4a. Therefore, in the image data from the camera 13, the reflector 32 is brighter than the rope 4a.
  • the illumination 31 and reflector 32 are used to improve the accuracy of edge detection processing by the image analysis unit 20 .
  • the analysis device 15 further includes an inclination calculation section 24 in addition to the image analysis section 20 , the outer diameter calculation section 21 , the distance calculation section 22 and the correction section 23 .
  • an inclination calculation section 24 in addition to the image analysis section 20 , the outer diameter calculation section 21 , the distance calculation section 22 and the correction section 23 .
  • the process shown in S201 of FIG. 11 is the same as the process shown in S101 of FIG.
  • the analysis device 15 acquires image data from the camera 13 (S201).
  • the image data acquired by the analysis device 15 in S201 includes data representing the rope 4a, data representing the light 14a, and data representing the light 30a.
  • FIG. 12 and 13 are diagrams for explaining the function of the analysis device 15.
  • FIG. FIG. 12 is a diagram corresponding to FIG.
  • FIG. 13 is a diagram showing an example of an image captured by the camera 13. As shown in FIG. 12 and 13 show a state in which the rope 4a is inclined at an angle ⁇ with respect to the X axis.
  • the light from the light source 30 hits the rope 4a below the central axis 13a. Since the light 30a is captured by the camera 13 from above, the light 30a is curved downward in the image captured by the camera 13. FIG. Also, when the rope 4a is inclined as shown in FIG. 12, the outer diameter of the rope 4a increases upward in the image captured by the camera 13 .
  • the processing from S202 to S204 in FIG. 11 is the same as the processing from S102 to S104 in FIG.
  • the outer diameter calculator 21 calculates the outer diameter of the rope 4a on the image data.
  • the same value can be obtained in S104 no matter which pixel position u is used to calculate the outer diameter of the rope 4a.
  • the outer diameter value calculated in S204 varies depending on the pixel position u.
  • the outer diameter calculator 21 calculates the outer diameter w(u t ) of the rope 4a at the specific pixel position u t in S204.
  • the distance calculator 22 calculates the shooting distance on the first YZ plane, that is, the distance LA shown in FIG. 12, based on the position of the light 14a on the image data output from the camera 13.
  • a distance LA shown in FIG. 12 is a distance on the first YZ plane between a point obtained by projecting the optical center C onto the first YZ plane and the central axis Cr of the rope 4a.
  • the distance calculator 22 calculates the shooting distance on the second YZ plane, that is, the distance LB shown in FIG. 12, based on the position of the light 30a on the image data output from the camera 13 .
  • a distance LB shown in FIG. 12 is a distance on the second YZ plane between a point obtained by projecting the optical center C onto the second YZ plane and the central axis Cr of the rope 4a.
  • the central axis Cr of the rope 4a is parallel to the X axis.
  • the distance to Cr becomes the same value.
  • the distance LA and the distance LB do not have the same value.
  • the image analysis unit 20 extracts the light 14a from the image data acquired from the camera 13. Similarly, the image analysis unit 20 extracts the light 30a from the image data obtained from the camera 13 (S205).
  • the distance calculator 22 calculates the distance LA and the distance LB from Equation 1 based on the principle of triangulation ( S206).
  • XA is substituted for Xl
  • ul is the pixel position in the X-axis direction of the edge portion of the rope 4a irradiated with the light from the light source 14. It suffices to substitute u A [pixel].
  • the distance calculation unit 22 determines the pixel position u A based on the result extracted by the image analysis unit 20 in S205.
  • XB is substituted for Xl, and ul is the pixel position in the X-axis direction of the edge portion of the rope 4a irradiated with the light from the light source 30. It suffices to substitute u B [pixel].
  • the distance calculation unit 22 determines the pixel position uB based on the result extracted by the image analysis unit 20 in S205.
  • the tilt calculator 24 calculates the tilt angle of the rope 4a with respect to the X axis, that is, the angle ⁇ shown in FIG. 12 (S207). Based on the distance LA and the distance LB calculated by the distance calculation unit 22 in S206, the inclination calculation unit 24 obtains the angle ⁇ from the following equation.
  • the correction unit 23 corrects the outer diameter w(u t ) of the rope 4a calculated by the outer diameter calculation unit 21 in S204 (S208).
  • the correction unit 23 performs the correction in S208 based on the distance LA and the distance LB calculated by the distance calculation unit 22 in S206 and the angle ⁇ calculated by the inclination calculation unit 24 in S207.
  • the photographing distance L(X) at the distance (height) X in the X-axis direction from the central axis 13a is expressed by the following equation using the angle ⁇ .
  • Equation 4 The first term on the right side of Equation 4 is the distance Lc from the optical center C on the central axis 13a to the central axis Cr of the rope 4a.
  • the pixel position u [pixel] in the X-axis direction of the edge portion of the rope 4a in the image data and the distance X [mm] are associated by the following equation.
  • the distance L(u) from the optical center C to the central axis Cr of the rope 4a with respect to the pixel position u [pixel] in the X-axis direction in the image data is obtained by the following equation.
  • the outer diameter W [mm] of the rope 4a at the pixel position u [pixel] on the image data is obtained by the following formula using the distance L (u) of Equation 7 and the outer diameter w (u) at the pixel position u .
  • the correction unit 23 performs correction using Equation 8 in S208.
  • a series of processes shown in S201 to S208 are repeatedly performed until it is determined as Yes in S209.
  • FIG. 14 is a diagram showing another example of the elevator device.
  • FIG. 14 shows a 2:1 roping elevator system.
  • the elevator apparatus shown in FIG. 14 includes a car 1, a counterweight 2, a rope 4, a hoisting machine 6, a control device 9, a communication device 10, and a measurement device 12.
  • the elevator system further includes a return car 18 and a return car 19 .
  • a return car 18 and a return car 19 are provided at the top of the hoistway 3 .
  • the machine room 5 is not provided above the hoistway 3.
  • the hoisting machine 6 and the control device 9 are provided in the hoistway 3 .
  • the car 1 is provided with suspension wheels 1a and 1b.
  • the counterweight 2 comprises a hanging wheel 2a.
  • One end 4b of the rope 4 is provided at the top of the hoistway 3.
  • the rope 4 extends downward from the end 4b and is wound around the hanging wheels 1a and 1b of the car 1.
  • the other end 4 c of the rope 4 is provided at the top of the hoistway 3 .
  • the rope 4 extends downward from the end 4c and is wound around the hanging wheel 2a of the counterweight 2.
  • the rope 4 extends upward from the sling sheave 1b and is sequentially wound around the return sheave 18, the drive sheave 7, the return sheave 19, and the sling sheave 2a.
  • FIG. 14 shows an example in which the measuring device 12 is provided in the car 1.
  • the outer diameter of the rope 4 can be measured by the measuring device 12 in the same manner as in the example described above.
  • FIG. 15 is a diagram showing another example of the elevator device.
  • FIG. 15 shows a 2:1 roping elevator system.
  • a machine room 5 is provided above the hoistway 3 .
  • the hoist 6 and the control device 9 are installed in the machine room 5 .
  • One end 4b of the rope 4 is provided in the machine room 5.
  • the rope 4 extends downward from the end 4b and is wound around the hanging wheels 1a and 1b of the car 1.
  • the other end 4 c of the rope 4 is provided in the machine room 5 .
  • the rope 4 extends downward from the end 4c and is wound around the hanging wheel 2a of the counterweight 2.
  • the rope 4 extends upward from the sling sheave 1b and is sequentially wound around the drive sheave 7 and the sling sheave 2a.
  • Fig. 15 shows an example where car 1 is stopped at the landing on the lowest floor.
  • a portion of the rope 4 indicated by an arrow B is repeatedly bent by the sling wheel 2a and thus worn. However, that part is always located in the hoistway 3 . Therefore, if the measuring device 12 is installed in the machine room 5, the measuring device 12 cannot measure the outer diameter of that portion.
  • the measuring device 12 is provided on the car 1 so as to measure the outer diameter of the portion of the rope 4 that is wound around the suspension wheel 2a when the car 1 is stopped at the landing on the lowest floor. .
  • the portion of the rope 4 indicated by arrow D is subject to wear because it is repeatedly bent by hanging wheel 1a or by both hanging wheels 1a and 1b. However, that part is always located in the hoistway 3 . Therefore, if the measuring device 12 is installed in the machine room 5, the measuring device 12 cannot measure the outer diameter of that portion. In order to measure the outer diameter of the relevant portion of the rope 4 with the measuring device 12, it is preferable to provide the measuring device 12 in the car 1 so that the relevant portion can be photographed by the camera 13. For example, the measuring device 12 is provided on the car 1 so as to measure the outer diameter of the portion of the rope 4 that is wound around the suspension wheel 1a when the car 1 is stopped at the landing on the top floor.
  • the elevator device includes the measuring device 12
  • the measurement device 12 may be a device carried by elevator maintenance personnel. A maintenance worker may install the measuring device 12 in the machine room 5 or the like to measure the outer diameter of the rope 4 during regular inspections.
  • the functions of the analysis device 15 provided in the measurement device 12 may be provided in the control device 9 .
  • the functionality of analysis device 15 may be provided at a remote monitoring center. In such a case, the communication device 10 transmits image data from the camera 13 to the monitoring center via the network 11 .
  • the measuring device 12 may measure the outer diameter of ropes used in equipment other than elevators.
  • the elongated body whose outer diameter is measured by the measuring device 12 is not limited to a rope.
  • the measuring device 12 may measure the outer diameter of a rope-like elongated body, a tubular elongated body, or a cylindrical elongated body.
  • each part indicated by reference numerals 20 to 24 indicates the function possessed by the analysis device 15.
  • FIG. 16 is a diagram showing an example of hardware resources of the analysis device 15. As shown in FIG.
  • the analysis device 15 includes a processing circuit 40 including a processor 41 and a memory 42 as hardware resources.
  • the analysis device 15 implements the functions of the units indicated by reference numerals 20 to 24 by executing the programs stored in the memory 42 by the processor 41 .
  • a semiconductor memory or the like can be used as the memory 42 .
  • FIG. 17 is a diagram showing another example of hardware resources of the analysis device 15.
  • analysis device 15 comprises processing circuitry 40 including processor 41 , memory 42 and dedicated hardware 43 .
  • FIG. 17 shows an example in which a part of the functions of the analysis device 15 are implemented by dedicated hardware 43 . All the functions of the analysis device 15 may be realized by dedicated hardware 43 .
  • Dedicated hardware 43 can be a single circuit, multiple circuits, programmed processors, parallel programmed processors, ASICs, FPGAs, or combinations thereof.
  • a measuring device can be used to measure the outer diameter of a long object such as a rope.

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Abstract

La présente invention concerne un dispositif de mesure (12) comprenant une caméra (13), une source de lumière (14), une unité de calcul de diamètre externe (21), une unité de calcul de distance (22) et une unité de correction (23). La caméra (13) photographie un corps allongé le long de l'axe X et délivre des données d'image. La source de lumière (14) émet une lumière qui s'étale à l'intérieur d'un plan YZ et amène une lumière linéaire à frapper le corps allongé. L'unité de calcul de distance (22) calcule la distance de la caméra (13) au corps allongé sur la base de la position dans les données d'image de la lumière par rapport à la source de lumière (14). L'unité de correction (23) corrige un diamètre externe calculé par l'unité de calcul de diamètre externe (21) sur la base de la distance.
PCT/JP2021/005923 2021-02-17 2021-02-17 Dispositif de mesure et dispositif élévateur WO2022176061A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2023500182A JP7276635B2 (ja) 2021-02-17 2021-02-17 測定装置及びエレベーター装置
CN202180093039.0A CN116829901B (zh) 2021-02-17 2021-02-17 测定装置以及电梯装置
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