Bridge dynamic displacement measuring device based on machine vision

Abstract

The utility model belongs to the technical field of bridge dynamic displacement measurement, and particularly relates to a bridge dynamic displacement measuring device based on machine vision. The problem that in the prior art, a camera is frequently interfered by the external light environment in the laser beam receiving process is solved. Comprising a mounting box, an industrial camera is arranged in the mounting box, a shading assembly is arranged outside the mounting box, the shading assembly comprises a fixing frame fixed to one side of the mounting box, a shading cover is fixed to the end of the fixing frame, and a mounting base is arranged at the extending end of the shading cover. The shading assembly is arranged on one side of the industrial camera, and the shading assembly shields and protects the lens of the industrial camera to ensure that the industrial camera can completely shoot the laser beam emitted by the laser emitter located on one side of the pier, so that the industrial camera can continuously shoot the laser beam, and the purpose of measurement is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge dynamic displacement measurement technical field, concretely is a kind of bridge dynamic displacement measurement device based on machine vision. BACKGROUND

[0002] Bridge dynamic displacement is the deformation or position change of bridge structure under dynamic load, and its measurement and analysis are of great significance for evaluating the dynamic performance, safety and stability of bridge, and bridge dynamic displacement is usually accurately measured by machine vision method.

[0003] At present, the machine vision measurement method of bridge dynamic displacement is to set a target on the bridge by using photoelectric and image processing method, then emit laser beam, and after magnification by optical lens, the image is received by industrial camera on the bank and continuously photographed, then target recognition and operation are carried out by PC machine running image processing software, and the dynamic displacement of bridge is obtained, the measurement process is completed by machine, and the measurement precision is high, but this method is affected by external light environment, leading to frequent interference in the process of receiving laser beam by camera, which is not conducive to image shooting, and the measurement process is repeated, which seriously affects the measurement efficiency. UTILITY MODEL CONTENT

[0004] To solve the problem of frequent interference of external light environment in the process of receiving laser beam by camera in the prior art, the utility model provides a bridge dynamic displacement measurement device based on machine vision, which sets a light shielding assembly on one side of the industrial camera, the light shielding assembly extends to one side of the pier, and the light shielding assembly shields and protects the lens of the industrial camera to ensure that the industrial camera can completely shoot the laser beam emitted by the laser emitter located on one side of the pier, so that the industrial camera can continuously shoot the laser beam, and the measurement purpose is achieved.

[0005] To achieve the above object, the specific technical scheme is as follows:

[0006] A bridge dynamic displacement measurement device based on machine vision, comprising a mounting box, an industrial camera is arranged in the mounting box, the lens of the industrial camera extends to the outside of the mounting box, a light shielding assembly is arranged on the outside of the mounting box, the light shielding assembly comprises a fixed frame fixed on one side of the mounting box, a light shielding cover is fixed to the end of the fixed frame, an installation seat is arranged at the extension end of the light shielding cover, a laser emitter is fixed to the side wall of the installation seat, the lens of the industrial camera and the laser emitter are oppositely arranged, the industrial camera transmits data information to PC machine through data line, PC machine processes data information and obtains a chart, the chart can directly show whether the laser track emitted by the laser emitter changes, if it changes, it means that the pier has dynamic displacement, and the specific measurement process is the prior art, which will not be described here.

[0007] Further, the outer surface of the mounting seat is a plane, one side of the mounting seat is provided with a pier, and the surface of the pier is closely attached to the surface of the mounting seat.

[0008] Further, the top of the mounting seat is fixed with a hanging plate, the side wall of the mounting seat is fixed with a clamping plate, a fastening bolt is arranged between the clamping plate and the mounting seat, one side wall of the clamping plate is attached to the surface of the pier, the mounting seat is attached to the surface of the pier, and the laser emitter is fixed on the mounting seat.

[0009] Further, one side surface of the mounting seat is provided with a solar power generation device, and the laser beams generated by the laser emitter cannot shake left and right; the solar power generation device generates electricity by using solar energy and provides electric energy for the laser emitter, so that the laser emitter can continuously emit laser beams, and the laser emitter is conducive to cooperation with the industrial camera.

[0010] Further, the bottom of the mounting box is provided with a steel column, one side of the bottom end of the mounting box is fixed with a fixed plate, and the bottom of the fixed plate is provided with a positioning pipe.

[0011] Further, the bottom of the mounting box is provided with a steel column, one side of the bottom end of the mounting box is fixed with a fixed plate, and the bottom of the fixed plate is provided with a positioning pipe.

[0012] 1) By arranging the light shielding assembly on one side of the industrial camera, the light shielding assembly extends to one side of the pier, the light shielding assembly shields and protects the lens of the industrial camera, so that the industrial camera can completely shoot the laser beams emitted by the laser emitter located on one side of the pier, thereby facilitating the industrial camera to continuously shoot the laser beams, and achieving the measurement purpose.

[0013] 2) By arranging the mounting seat on the side wall of the pier, the mounting seat is attached to the surface of the pier, the laser emitter is fixed on the mounting seat, and the position stability between the laser emitter and the pier can be improved through the mounting seat, thereby avoiding the problem that the position of the laser emitter deviates due to external wind and other factors. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is a structural schematic view of the mounting box, the light shielding cover and the concrete base of the utility model;

[0016] Figure 3 is a perspective view of the light shielding cover of the utility model;

[0017] Figure 4It is the structural schematic view of the pier and the mounting seat of the utility model;

[0018] Figure 5 It is the structural schematic view of the mounting seat and the clamping plate of the utility model;

[0019] Figure 6 It is the internal structure schematic view of the mounting box of the utility model.

[0020] As shown in the figure:

[0021] Pier 1, mounting seat 2, light shield 3, mounting box 4, cover plate 41, industrial camera 42, bridge main body 5, concrete pedestal 6, steel column 7, fixed plate 8, positioning pipe 81, fixed frame 9, laser emitter 10, hanging plate 11, solar power generation device 12, main threaded hole 13, clamping plate 14, auxiliary threaded hole 15, fastening bolt 16. Specific implementation

[0022] The utility model will be described in detail below in combination with the specific implementation shown in the drawings. However, these implementation does not limit the utility model, and the conversion of structure, method or function made by the ordinary skilled in the art according to these implementation is included in the protection scope of the utility model.

[0023] As shown in the figure: Figure 1 - Figure 6 The utility model aims at providing a kind of measuring device capable of reducing the influence of external environment light on shooting equipment to solve the problem that camera receives laser beam in the process of frequent interference of external light environment. According to the above function, the whole device includes industrial camera 42, light shield 3, laser emitter 10.

[0024] As shown in the figure: Figure 1 - Figure 6 A kind of bridge dynamic displacement measurement device based on machine vision, including mounting box 4, industrial camera 42 is arranged in the inside of mounting box 4, the lens of industrial camera 42 extends to the outside of mounting box 4, light shield assembly is arranged on the outside of mounting box 4, light shield assembly includes fixed frame 9 fixed on one side of mounting box 4, the end of fixed frame 9 is fixed with light shield 3, the extension end of light shield 3 is provided with mounting seat 2, laser emitter 10 is fixed on the side wall of mounting seat 2, the lens of industrial camera 42 and laser emitter 10 is oppositely arranged;

[0025] Cover plate 41 is fixed on the side wall of mounting box 4 by bolt, after disassembling cover plate 41, industrial camera 42 can be taken out or placed in mounting box 4, so that industrial camera 42 can be fixed, ensure that the lens of industrial camera 42 and the lens of laser emitter 10 are opposite alignment;

[0026] The outer surface of the mounting base 2 is flat, one side of the mounting base 2 is provided with a pier 1, the pier 1 is fixed with a bridge body 5 above, a laser emitter 10 is arranged on one side of the pier 1, the laser beam emitted by the laser emitter 10 is continuously shot by an industrial camera 42, the industrial camera 42 transmits data information to a PC through a data line, the PC processes the data information and obtains a chart, the chart can directly show whether the laser track emitted by the laser emitter 10 changes, if the change occurs, it indicates that the pier 1 moves, the specific measurement process is prior art, which will not be described here.

[0027] During the shooting process, the light shield 3 shields the environment on both sides of the lens of the industrial camera 42, so as to avoid the external environment light from irradiating the lens of the industrial camera 42 and avoid the problem of light interference, the laser beam is shot by the industrial camera 42 during the process of passing through the internal passage of the light shield 3, and the shooting purpose of low environmental light interference is achieved.

[0028] As shown in Figure 1 Figure 6 The surface of the pier 1 is closely combined with the surface of the mounting base 2; the mounting base 2 is provided with a solar power generation device 12 on one side surface; under the condition that the pier 1 and the mounting base 2 are stably connected, the pier 1 itself has sufficient strength and stability to ensure the stability of the mounting base 2, under the condition that the mounting base 2 has sufficient stability, the laser beam emitted by the laser emitter 10 will not shake left and right; the solar power generation device 12 generates electricity by using solar energy and provides power for the laser emitter 10, so that the laser emitter 10 can continuously emit laser beams, which is conducive to the cooperation of the laser emitter 10 and the industrial camera 42.

[0029] As shown in Figure 1 Figure 5 The top of the mounting base 2 is fixed with a hanging plate 11, the side wall of the mounting base 2 is fixed with a clamping plate 14, the clamping plate 14 and the mounting base 2 are provided with a fastening bolt 16, one side wall of the clamping plate 14 is combined with the surface of the pier 1; during the installation of the laser emitter 10, the laser emitter 10 and the mounting base 2 are fixedly connected through the bolt, then the mounting base 2 is combined with the surface of the pier 1, then the hanging plate 11 is combined with the pier 1, and the clamping plate 14 clamps one side wall of the pier 1, an extension end of the clamping plate 14 combined with the side wall of the mounting base 2 is provided with a secondary threaded hole 15, a primary threaded hole 13 is arranged at the corresponding position of the mounting base 2, and the clamping plate 14 and the mounting base 2 are fixed by the fastening bolt 16 passing through the primary threaded hole 13 and the secondary threaded hole 15.

[0030] As shown in Figure 1 Figure 2 ​​​As shown, the bottom of the installation box 4 is provided with a steel column 7, the bottom end of the installation box 4 is fixed with a fixed plate 8, the bottom of the fixed plate 8 is provided with a positioning pipe 81; the lower part of the installation box 4 is a concrete base 6, the top of the concrete base 6 is provided with a groove corresponding to the steel column 7 and the positioning pipe 81, the installation box 4 is made of stainless steel material, the installation box 4 can play a protective role, avoiding external objects colliding with the mechanism inside the installation box 4, the fixed plate 8 and the steel column 7 are connected and fixed with the installation box 4 by welding, the positioning pipe 81 is inserted into the groove of the concrete base 6 and poured with concrete for pouring and solidification, in the process of installing the installation box 4, the top of the positioning pipe 81 is provided with a threaded hole, the fixed plate 8 is aligned with the threaded hole at the top of the positioning pipe 81, then the steel column 7 is inserted into the groove of the concrete base 6, then the fixed plate 8 is fixed at the top of the positioning pipe 81 by bolts, so as to fix the installation box 4 and the fixed frame 9 on the top of the concrete base 6.

[0031] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0032] The above series of detailed descriptions are only specific descriptions of the feasible embodiments of the utility model, and they are not used to limit the protection scope of the utility model, and equivalent embodiments or changes made without departing from the spirit of the utility model art should be included in the protection scope of the utility model.

Claims

1. A machine vision-based bridge dynamic displacement measurement device, comprising a mounting box, characterized in that: An industrial camera is installed inside the mounting box, and the lens of the industrial camera extends to the outside of the mounting box. A light-shielding assembly is installed on the outside of the mounting box. The light-shielding assembly includes a fixed frame fixed to one side of the mounting box, a light shield fixed to the end of the fixed frame, a mounting base provided at the extended end of the light shield, and a laser emitter fixed to the side wall of the mounting base. The lenses of the industrial camera and the laser emitter are arranged opposite to each other.

2. The bridge dynamic displacement measurement device based on machine vision according to claim 1, characterized in that: The outer surface of the mounting base is flat, and a pier is provided on one side of the mounting base, with the surface of the pier closely fitting the surface of the mounting base.

3. The bridge dynamic displacement measurement device based on machine vision according to claim 2, characterized in that: A hanging plate is fixed to the top of the mounting base, and a clamping plate is fixed to the side wall of the mounting base. Fastening bolts are provided between the clamping plate and the mounting base, and one side wall of the clamping plate is in contact with the surface of the bridge pier.

4. The bridge dynamic displacement measurement device based on machine vision according to claim 1, characterized in that: A solar power generation device is provided on one side surface of the mounting base.

5. The bridge dynamic displacement measurement device based on machine vision according to claim 4, characterized in that: The bottom of the mounting box is provided with a steel column, and a fixing plate is fixed to one side of the bottom end of the mounting box. The bottom of the fixing plate is provided with a positioning tube.

6. The bridge dynamic displacement measurement device based on machine vision according to claim 5, characterized in that: The mounting box is located below a concrete base, and the top of the concrete base has a groove corresponding to the steel column and the positioning tube.

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