CN214668512U

CN214668512U - High-performance 3D graph acquisition device

Info

Publication number: CN214668512U
Application number: CN202023006363.6U
Authority: CN
Inventors: 吴杰祺; 刘超; 李建勋; 樊磊; 孟凡朋
Original assignee: Kunshan Baiao Software Co ltd
Current assignee: Kunshan Baiao Software Co ltd
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-11-09
Anticipated expiration: 2030-12-14

Abstract

The utility model discloses a high performance 3D figure collection system, including an objective table that supplies the testee to place, a actuating system and one be used for carrying out the figure collection system that 3D figure was gathered to the testee, actuating system can drive objective table and carry out horizontal migration, figure collection system has one and arranges camera and lens subassembly in the objective table top, and two also arrange in the objective table top and relative distribution simultaneously in the laser instrument on camera and lens subassembly both sides next door, and the contained angle between the optical axis of two laser instruments and the optical axis of camera and lens subassembly can be adjusted. The high-performance 3D image acquisition device is simple and reasonable in structure, simple and convenient to operate, high in detection precision and wide in application object range.

Description

High-performance 3D graph acquisition device

Technical Field

The utility model relates to a figure collection system technical field specifically provides a high performance 3D figure collection system.

Background

At present, three-dimensional laser scanners are commonly used in the market to detect the production line products. However, since the three-dimensional laser scanner adopts single-channel laser as a scanning source, the three-dimensional laser scanner has the following defects in the using process: 1) the three-dimensional laser scanner can only scan objects with fixed size, and can not well collect and detect the objects with random size; 2) when scanning an object with a complex structure, the three-dimensional laser scanner is easy to cause light shielding, so that a large amount of imaging surfaces can be lost, and scanning failure is caused.

In view of this, the present invention is especially provided.

Disclosure of Invention

In order to overcome the defects, the utility model provides a high performance 3D figure collection system, its simple structure, reasonable, easy and simple to handle, detection precision is high, and application object wide range.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides a high performance 3D figure collection system, includes that an objective table, a actuating system that supply the testee to place and one are used for carrying out the figure collection system that 3D figure was gathered to the testee, wherein, actuating system can drive objective table carries out horizontal migration, figure collection system have one arrange in the camera and the camera lens subassembly of objective table top and two also arrange in the objective table top and relative distribution simultaneously in the laser instrument on camera and the camera lens subassembly both sides next door, and two the optical axis of laser instrument with contained angle between the optical axis of camera and camera lens subassembly can be adjusted.

As a further improvement of the utility model, a marble platform is also arranged, and the X-Y axis direction is set on the upper surface of the marble platform;

the driving system is provided with a first linear motor and a second linear motor, the first linear motor is installed on the upper surface of the marble platform, the second linear motor is installed on a rotor of the first linear motor, and can perform reciprocating movement and positioning along the X-axis direction under the driving of the first linear motor; the object carrying platform is arranged on a rotor of the second linear motor and can be driven by the second linear motor to perform reciprocating movement and positioning along the Y-axis direction.

As a further improvement of the present invention, the camera and lens assembly has a CMOS camera and a double telecentric lens coaxially mounted on the CMOS camera;

the laser adopts a blue laser with the wavelength of 450 nm.

As a further improvement the utility model discloses a top location of cargo platform is provided with a mounting panel, camera and the vertical and fixed mounting of camera lens subassembly in the middle part position department of a mounting panel side, two the laser homoenergetic is relative mounting panel position slope install with adjustable on the mounting panel side, and two simultaneously the laser still relative distribution in the both sides next door of camera and camera lens subassembly.

As a further improvement of the present invention, two arc-shaped mounting holes are formed through the mounting plate, and the two arc-shaped mounting holes are also symmetrically arranged beside two sides of the camera and lens assembly;

the laser installation device is characterized by further comprising a pair of installation bases which are installed in a matched mode with the two arc-shaped installation holes respectively, each installation base is provided with a base main body for installation of the laser and at least one bolt which is in threaded connection with the base main body, and at least one bolt movably penetrates through the arc-shaped installation holes corresponding to the bolts and is screwed with the nuts.

As a further improvement of the utility model, each the next door of arc mounting hole all is provided with the angle scale interval.

As a further improvement of the utility model, the included angle between the optical axis of each laser and the optical axis of the camera and the lens component is 15-45 degrees.

As a further improvement of the present invention, a support is provided on the upper surface of the marble platform, and the mounting plate is connected to the upper portion of the support and is positioned above the object stage by the support.

The utility model has the advantages that: compared with the prior art, the utility model has the advantages that on one hand, the driving system composed of two sets of linear motors is adopted to drive the carrying platform to move horizontally, so that the detection precision of the object to be detected can be greatly improved; on the other hand, the image acquisition system consisting of two sets of lasers, a CMOS camera and a double telecentric lens is adopted to acquire the image information of the measured object, particularly, the included angle between the optical axis of the two sets of lasers and the optical axis of the camera and the lens assembly can be adjusted along with the change of the height and the shape of the measured object, so that the complete image acquisition of the objects with different sizes and different surface shapes can be realized. In a word, 3D figure collection system's simple structure, reasonable, easy and simple to handle, detect the precision high, and application object wide range.

Drawings

Fig. 1 is a schematic structural diagram of the high-performance 3D image acquisition device of the present invention;

figure 2 is the utility model discloses the figure collection system install in the schematic structure on the mounting panel.

The following description is made with reference to the accompanying drawings:

1-a carrier platform; 2-a drive system; 3-a graphic acquisition system; 30-camera and lens assembly; 300-CMOS camera; 301 — double telecentric lens; 31-a laser; 4-marble platform; 5, mounting a plate; 50-arc mounting holes; 6, mounting seats; 7-bracket.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and the present invention is not limited to the embodiments described in the present application.

It should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any modification of the structures, changes of the ratio relation or adjustment of the size should still fall within the scope covered by the technical contents disclosed in the present invention without affecting the function and the achievable purpose of the present invention. The terms "first" and "second" used herein are used for convenience of description and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

Example (b):

please refer to fig. 1 and 2, which are schematic structural diagrams of the high-performance 3D image capturing device and the image capturing system mounted on the mounting plate according to the present invention.

The high-performance 3D image acquisition device of the utility model comprises a loading platform 1 for placing the object to be measured, a driving system 2 and an image acquisition system 3 for acquiring the 3D image of the object to be measured, wherein the driving system 2 can drive the loading platform 1 to move horizontally, the image collecting system 3 has a camera and lens assembly 30 disposed above the loading platform 1, and two lasers 31 also disposed above the loading platform 1 and disposed beside the camera and lens assembly 30, and the included angle alpha between the optical axis of the two lasers 31 and the optical axis of the camera and lens assembly 30 can be adjusted along with the height and the shape change of the object to be measured, so that the complete image acquisition of objects with different sizes and different surface shapes can be realized.

In this embodiment, preferably, a marble table 4 is further provided, and the X-Y axis direction is set on the upper surface of the marble table 4;

the driving system 2 is provided with a first linear motor and a second linear motor, the first linear motor is installed on the upper surface of the marble platform 4, the second linear motor is installed on a rotor of the first linear motor, and can perform reciprocating movement and positioning along the X-axis direction under the driving of the first linear motor; the object carrying platform 1 is mounted on a rotor of the second linear motor and can be driven by the second linear motor to perform reciprocating movement positioning along the Y-axis direction. Because this 3D figure collection system converts the size of testee into actuating system's displacement, so, select for use the electric wire motor of high accuracy and can promote the detection precision of testee greatly.

Preferably, the camera and lens assembly 30 has a CMOS camera 300 and a double telecentric lens 301 coaxially mounted on the CMOS camera through an M42 interface, wherein the CMOS camera employs a coaxpress2.0 protocol that can provide a four channel image with 4096 x 3072 resolution at a 187 frame rate; the double telecentric lens can make the edge of the measured object clear and stable, and can effectively remove the noise in the acquisition process, almost has no distortion, and the lens resolution is high;

the laser 31 adopts a blue laser with the wavelength of 450nm, the blue laser belongs to the most sensitive wave band of the camera, and the imaging effect is optimal.

In this embodiment, preferably, a mounting plate 5 is positioned above the object stage 1, the camera and lens assembly 30 is vertically and fixedly mounted at a middle position of one side surface of the mounting plate 5 (specifically, the CMOS camera is disposed at the middle position of one side surface of the mounting plate 5 through a fixing seat, and an optical axis of the camera and lens assembly 30 is in a vertical state), both the two lasers 31 can be adjustably and obliquely mounted on one side surface of the mounting plate 5 relative to the mounting plate 5, and simultaneously, the two lasers 31 are also relatively distributed beside two sides of the camera and lens assembly 30; namely, the size of an included angle alpha between the optical axis of the laser and the optical axis of the camera and the lens assembly can be adjusted by adjusting the arrangement position of the laser.

Further preferably, the structure for positioning and disposing the mounting plate 5 above the loading platform 1 is: a bracket 7 is also positioned and arranged on the upper surface of the marble platform 4, and the mounting plate 5 is positioned and connected on the upper part of the bracket 7 and is positioned and arranged above the carrying platform 1 through the bracket 7.

The structure that the two lasers 31 can be obliquely arranged on one side surface of the mounting plate 5 relative to the mounting plate 5 in a position-adjustable manner is as follows: two arc-shaped mounting holes 50 are formed in the mounting plate 5 in a penetrating manner, and the two arc-shaped mounting holes 50 are further symmetrically arranged beside two sides of the camera and lens assembly 30; still be equipped with a pair of respectively with two mount pad 6 of arc mounting hole 50 cooperation installation, each mount pad 6 respectively has one and supplies the seat main part of laser instrument 31 installation usefulness and at least one threaded connection in bolt in the seat main part, and at least one the bolt activity is worn to establish rather than corresponding behind the arc mounting hole 50, all the spiro union is gone up the nut.

It is further preferable that an angle scale is provided beside each of the arc-shaped mounting holes 50, so that the operator can quickly adjust the position of the laser.

The included angle between the optical axis of each laser 31 and the optical axis of the camera and lens assembly 30 is 15-45 degrees.

Additionally, the utility model also provides a high performance 3D figure collection system's collection method specifically is: taking the example of scanning the printed circuit board for explanation,

1) electrifying and initializing a hardware system and an upper computer application program;

2) a, determining the installation positions of the two lasers 31 according to the size of the printed circuit board to be detected, namely ensuring that the printed circuit board is wholly located in the shooting effective area of the camera and lens assembly 30, and obtaining the view width delta X of the camera and lens assembly 30; supplementary explanation: in general, the flatter the object to be measured is, the larger the required laser angle (i.e. the larger the angle between the optical axis of the laser 31 and the optical axis of the camera and lens assembly 30 is), and correspondingly, the smaller the depth of field of the lens at this time is; if the measured object is higher, the required laser included angle is smaller, and correspondingly, the depth of field of the lens is larger;

b. determining the walking distance and the walking speed of the driving system 2 according to the maximum length and width (marked as Xmax and Ymax) of the printed circuit board to be tested, wherein the walking distance of the driving system 2 is the length and the width of the printed circuit board to be tested (for example, the length of the printed circuit board to be tested is the Y-axis distance traveled by the driving system, and the width of the printed circuit board to be tested is the X-axis distance traveled by the driving system); then, the walking speed of the driving system 2 is determined according to the number of pictures required to be taken by the camera and lens assembly 30 per millimeter and the maximum frame rate of the CMOS camera;

3) the upper computer controls to start the laser, controls the driving system 2 to work by controlling the motion controller, transfers the shooting view center of the CMOS camera to the upper left corner of the maximum length and width of the printed circuit board to be detected, and sets the coordinates of the shooting central point at the moment as (X0, Y0);

4) firstly, the upper computer controls the first linear motor to be out of work (namely X-axis fixation) and the second linear motor to be in work (namely Y-axis movement) so as to drive the object carrying platform 1 to move to a position with coordinates of (X0, Ymax), complete scanning of a first area of the printed circuit board to be detected, and store the scanning result into a storage program of the upper computer, and the storage program is marked as DATA (1); then, the upper computer controls the first linear motor and the second linear motor to work so as to drive the loading platform 1 to move to a position with coordinates of (X0+ delta X, Y0); then, the upper computer controls the first linear motor to stop working and the second linear motor to work again so as to drive the loading platform 1 to move to a position with coordinates of (X0+ delta X, Ymax), complete scanning of a second area of the printed circuit board to be detected, and store the scanning result into a storage program of the upper computer, and the storage program is marked as DATA (2); subsequently, the upper computer controls the first linear motor and the second linear motor to work so as to drive the loading platform 1 to move to a position with coordinates of (X0+ Δ X2, Y0), … …, and the operations are repeated until the scanning of all the areas is completed;

5) and after scanning of all the areas is finished, obtaining the 3D graph of each area, wherein the moving distance is accurately controlled by a linear motor and a motion controller (an upper computer), the theoretical error is in a micron level, and the 3D graph can be directly placed according to the offset distance and the position coordinate of delta X to obtain complete 3D graph data.

In summary, compared with the prior art, the utility model, on one hand, adopts the driving system composed of two sets of linear motors to drive the object carrying platform to move horizontally, thereby greatly improving the detection precision of the object to be detected; on the other hand, the image acquisition system consisting of two sets of lasers, a CMOS camera and a double telecentric lens is adopted to acquire the image information of the measured object, particularly, the included angle between the optical axis of the two sets of lasers and the optical axis of the camera and the lens assembly can be adjusted along with the change of the height and the shape of the measured object, so that the complete image acquisition of the objects with different sizes and different surface shapes can be realized. In a word, 3D figure collection system's simple structure, reasonable, easy and simple to handle, detect the precision high, and application object wide range.

The above description is only a preferred embodiment of the present invention, but not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as within the protection scope of the present invention.

Claims

1. The utility model provides a high performance 3D figure collection system which characterized in that: including an objective platform (1) that supplies the testee to place, a actuating system (2) and one be used for carrying out figure collection system (3) that 3D figure was gathered to the testee, wherein, actuating system (2) can drive objective platform (1) carries out horizontal migration, figure collection system (3) have one arrange in camera and lens subassembly (30) and two of objective platform (1) top also arrange in objective platform (1) top and relative distribution simultaneously in laser instrument (31) on camera and lens subassembly (30) both sides next door, and two the optical axis of laser instrument (31) with contained angle between the optical axis of camera and lens subassembly (30) can be adjusted.

2. The high performance 3D graphics capture device of claim 1, wherein: a marble platform (4) is also arranged, and the X-Y axis direction is set on the upper surface of the marble platform (4);

the driving system (2) is provided with a first linear motor and a second linear motor, the first linear motor is installed on the upper surface of the marble platform (4), the second linear motor is installed on a rotor of the first linear motor, and can be driven by the first linear motor to perform reciprocating movement positioning along the X-axis direction; the object carrying platform (1) is mounted on a rotor of the second linear motor and can be driven by the second linear motor to perform reciprocating movement positioning along the Y-axis direction.

3. The high performance 3D graphics capture device of claim 1, wherein: the camera and lens assembly (30) has a CMOS camera (300) and a double telecentric lens (301) coaxially mounted on the CMOS camera;

the laser (31) adopts a blue laser with the wavelength of 450 nm.

4. The high performance 3D graphics capture device of claim 2, wherein: the top location of objective platform (1) is provided with a mounting panel (5), camera and camera lens subassembly (30) vertical and location install in the middle part position department of mounting panel (5) a side, two laser instrument (31) all can be relative mounting panel (5) position is installed in slope adjustably in on mounting panel (5) a side, and two simultaneously laser instrument (31) still relative distribution in the both sides next door of camera and camera lens subassembly (30).

5. The high performance 3D graphics capture device of claim 4, wherein: two arc-shaped mounting holes (50) are formed in the mounting plate (5) in a penetrating mode, and the two arc-shaped mounting holes (50) are further symmetrically arranged beside two sides of the camera and lens assembly (30);

still be equipped with a pair of respectively with two mount pad (6) of arc mounting hole (50) cooperation installation, each mount pad (6) respectively have one supply seat main part and at least one threaded connection of laser instrument (31) installation usefulness in bolt in the seat main part, and at least one the bolt activity is worn to establish rather than corresponding behind arc mounting hole (50), all the spiro union is gone up the nut.

6. The high performance 3D graphics capture device of claim 5, wherein: an angle scale value is arranged beside each arc-shaped mounting hole (50).

7. The high performance 3D graphics capture device of claim 4, wherein: the included angle between the optical axis of each laser (31) and the optical axis of the camera and lens assembly (30) is 15-45 degrees.

8. The high performance 3D graphics capture device of claim 4, wherein: still fix a position on the upper surface of marble platform (4) and be provided with a support (7), mounting panel (5) location connect in on support (7) upper portion, and through support (7) come fix a position set up in the top of objective platform (1).