CN217155290U

CN217155290U - Visual measurement sensor combining 2D and 3D

Info

Publication number: CN217155290U
Application number: CN202220671138.4U
Authority: CN
Inventors: 欧灿娟; 未海洪; 王谷成; 凌辉
Original assignee: Zhuhai Boming Sensor Technology Co ltd
Current assignee: Zhuhai Boming Sensor Technology Co ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-08-09
Anticipated expiration: 2032-03-25

Abstract

The utility model discloses a vision measurement sensor that 2D and 3D combined, the slide rail comprises a supporting bar, the bracing piece outer wall is equipped with the CCD camera, CCD camera bottom is equipped with telecentric lens, telecentric lens bottom cover is equipped with annular light source, the annular light source below is equipped with the determinand body, bracing piece bottom symmetry is equipped with the curb plate, two it is equipped with the pivot to rotate between the curb plate, keep away from the bracing piece below CCD camera one end is equipped with the structure light projector ware. The utility model discloses a set up bracing piece, CCD camera, telecentric mirror head, annular light source, curb plate, determinand body and pivot, combine together 2D and 3D measurement technique, can make this 3D sensor both can record the height information on object surface by the high accuracy, can also obtain accurate 3D edge size, strengthened the adaptability of 3D sensor, make it can satisfy complicated diversified measurement demand, the various complicated detection demands of adaptation that can be good.

Description

Visual measurement sensor combining 2D and 3D

Technical Field

The utility model relates to an optical measurement sensor technical field specifically is a vision measurement sensor that 2D and 3D combine.

Background

General 3D measurement sensors have poor lighting conditions and distortion of captured 2D images, which limits the diversified applications of 3D sensors.

The 2D measurement technique provides measurement results according to characteristics such as image gray scale and contrast, and changes in illumination conditions may cause changes in captured image effects, resulting in edge measurement errors. The general 3D sensor detects the depth information of an object by using the modulation deformation of structured light, so that the requirement on the illumination condition is not high, the environmental interference resistance is strong, an auxiliary illumination system is not provided, and the stable and good illumination condition required by 2D measurement cannot be provided. In addition, a 3D sensor generally uses a general industrial lens for imaging, and the general industrial lens for imaging has distortion, that is, the size of a real object is different from the imaging size of an image sensor, so that the 2D measurement result is inaccurate. Due to the influence of the above various factors, the main detection object of a general 3D sensor is depth information of an object, and accurate 2D edge detection cannot be performed, and accurate positioning of a 2D image cannot be achieved.

Therefore, the existing optical measurement sensor has low applicability in the use process and cannot adapt to various complex detection requirements.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vision measurement sensor that 2D and 3D combine to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the utility model provides a vision measurement sensor that 2D and 3D combine, includes the bracing piece, the bracing piece outer wall is equipped with the CCD camera, CCD camera bottom is equipped with telecentric lens, telecentric lens bottom cover is equipped with annular light source, the annular light source below is equipped with the determinand body, bracing piece bottom symmetry is equipped with the curb plate, two rotate between the curb plate and be equipped with the pivot, keep away from the bracing piece below CCD camera one end is equipped with the structured light projector ware.

Further, pivot outer wall one end extends to the curb plate outside is equipped with the motor, pivot outer wall cover is equipped with the fixing base, the fixing base inner wall slides and is equipped with the fixed block, fixing base inner wall symmetry is equipped with the recess, the recess inner wall rotates and is equipped with the connecting rod, connecting rod outer wall one end is equipped with the spring, the connecting rod outer wall other end is equipped with the fixture block.

Furthermore, the fixing seat is located between the two side plates, a placing groove matched with the fixing block is formed in the bottom of the fixing seat, and the structured light projector is arranged at the bottom end of the fixing block and supports the structured light projector.

Further, the inner wall of the connecting rod is rotated with the groove through a rotating shaft, the connecting rod sleeve is arranged on the outer wall of the rotating shaft, two ends of the outer wall of the rotating shaft are rotatably connected with the inner wall of the groove, clamping grooves are symmetrically formed in the inner wall of the fixing block, the clamping blocks are matched with the clamping grooves, and the clamping blocks are controlled through the connecting rods.

Furthermore, the spring outer wall is far away from one end of the connecting rod and connected with the groove, the connecting rod outer wall extends to the inner wall of the clamping groove and is provided with the clamping block, and the spring, the connecting rod and the clamping block are matched.

Furthermore, the output shaft of the motor is connected with the rotating shaft, a top plate is arranged at the top end of the motor, and the outer wall of the top plate is connected with the outer wall of one of the side plates close to the motor to support the motor.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses a set up bracing piece, CCD camera, telecentric mirror head, annular light source, curb plate, structure light projector, determinand body and pivot, can make this 3D sensor both can record the high information on object surface by the high accuracy, can also obtain accurate 3D edge size, strengthened the adaptability of 3D sensor, make it can satisfy complicated diversified measurement demand, the various complicated detection demand of adaptation that can be good.

2. The utility model discloses a set up connecting rod, fixed block, draw-in groove, curb plate, recess, pivot, fixing base, spring and motor, can be so that the fixed block fixes in the fixing base, accomplish to structure light projector quick fixation and dismantlement, the fixed block drives structure light projector and rotates to adjust the angle of structure light projector.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the whole of the present invention;

FIG. 2 is a front sectional view of a portion of the present invention;

fig. 3 is an enlarged schematic view of fig. 2 a according to the present invention;

FIG. 4 is a schematic structural view of a side plate of the present invention;

in the figure: 1. a support bar; 2. a CCD camera; 3. a telecentric lens; 4. an annular light source; 5. a body of an object to be measured; 6. a side plate; 7. a rotating shaft; 8. a structured light projector; 9. a motor; 10. a fixed seat; 11. a fixed block; 12. a groove; 13. a connecting rod; 14. a spring; 15. a clamping block; 16. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a vision measurement sensor that 2D and 3D combine, includes

bracing piece

1, 1 outer wall of bracing piece is equipped with

CCD camera

2, 2 bottoms of CCD camera are equipped with

telecentric lens

3, 3 bottom covers of telecentric lens are equipped with

annular light source

4, 4 below of annular light source are equipped with

determinand body

5, 1 bottom symmetry of bracing piece is equipped with curb plate 6, two rotate between the curb plate 6 and be equipped with pivot 7, keep away from 1 below of bracing piece 2 one end of CCD camera is equipped with structured light projector 8.

The specific implementation mode is as follows: when the three-dimensional measuring device is used, firstly, when 3D measurement is carried out, the structured light projector 8 is opened, structured light patterns are projected to the surface of the object body 5 to be measured, the structured light patterns are bent and deformed due to the fact that the surface of the object body 5 to be measured is uneven, the deformed patterns are imaged through the telecentric lens 3, the CCD camera 2 collects pattern information and transmits the pattern information to an external computer, the three-dimensional structure information of the surface of the object to be measured is restored through a certain algorithm and an image processing technology, the depth size of the surface of the object to be measured can be measured in measuring software, and due to the fact that the telecentric lens 3 is unchanged in the measuring range and has the characteristics of no parallax, the measured three-dimensional structure is more accurate, and the precision is higher. In order to further optimize the 3D measurement effect, the structured light projection lens can also use a telecentric lens 3, because the light projected to the surface of the measured object by the telecentric lens 3 is parallel light, the different characteristics of the surface abscissa position of the measured object can be ensured to be the same with the included angle of the projected light, the transverse stretching deformation of the image is eliminated, which is beneficial to improving the measurement precision, secondly, when 2D positioning is carried out on the image or high-precision edge profile detection needs to be carried out on the object, the structured light projector 8 is in a closed state, the annular light source 4 is opened, so that the surface illumination of the body 5 of the measured object is uniform, the brightness is proper, the image is formed by the telecentric lens 3, the CCD camera 2 collects the image, the gray scale or contrast characteristic of the image is analyzed by a computer to obtain the 2D edge profile information of the body 5 of the measured object, because the telecentric lens 3 has small distortion and no imaging characteristic of parallax, the obtained 2D image effect brightness is almost completely consistent, the accuracy and the high accuracy of 2D measurement can be guaranteed, this case uses telecentric lens 3 formation of image in 3D measurement technology's structure, increase an annular light source 4, combine together 2D and 3D measurement technology, make this 3D sensor both can the high accuracy measure the height information on object surface, can also obtain accurate 2D edge size, the adaptability of 3D sensor has been strengthened, make it can satisfy complicated diversified measurement demand, the various complicated detection demand of adaptation that can be good.

Referring to fig. 1-3, the present invention provides a technical solution: a vision measuring sensor combining 2D and 3D is provided, wherein one end of the outer wall of a rotating shaft 7 extends to the outer side of a side plate 6 and is provided with a motor 9, the outer wall of the rotating shaft 7 is sleeved with a fixed seat 10, the inner wall of the fixed seat 10 is slidably provided with a fixed block 11, the inner wall of the fixed seat 10 is symmetrically provided with a groove 12, the inner wall of the groove 12 is rotatably provided with a connecting rod 13, one end of the outer wall of the connecting rod 13 is provided with a spring 14, the other end of the outer wall of the connecting rod 13 is provided with a clamping block 15, the fixed seat 10 is positioned between two side plates 6, the bottom of the fixed seat 10 is provided with a placing groove matched with the fixed block 11, a structured light projector 8 is arranged at the bottom end of the fixed block 11, the fixed block 11 is inserted into the fixed seat 10 to complete the fixation of the structured light projector 8 and support the structured light projector 8, and the inner wall of the connecting rod 13 rotates with the groove 12 through the rotating shaft 7, connecting rod 13 cover is located 7 outer walls of pivot, 7 outer walls both ends of pivot all with the recess 12 inner wall rotates to be connected, 11 inner wall symmetries of fixed block are equipped with draw-in groove 16, fixture block 15 with draw-in groove 16 phase-matchs, connecting rod 13 drive fixture block 15 and get into or break away from draw-in groove 16, control fixture block 15 through connecting rod 13, spring 14 outer wall is kept away from connecting rod 13 one end with recess 12 is connected, connecting rod 13 outer wall extends to draw-in groove 16 inner wall is equipped with fixture block 15, spring 14, connecting rod 13 and fixture block 15 cooperate, the output shaft of motor 9 with pivot 7 is connected, the motor 9 top is equipped with the roof, the roof outer wall with be close to one of motor 9 6 outer wall connections of curb plate, the output shaft of motor 9 takes pivot 7 to rotate, supports motor 9.

The specific implementation mode is as follows: when the structured light projector fixing device is used, the upper end of the connecting rod 13 is pressed inwards, so that the connecting rod 13 enters the complete groove 12, the spring 14 is extruded and contracted, meanwhile, the connecting rod 13 drives the clamping block 15 to be separated from the clamping groove 16, the fixing block 11 is inserted into the fixing seat 10, meanwhile, the force for pressing the connecting rod 13 is removed, the spring 14 is opened to drive the connecting rod 13 to reset, the connecting rod 13 drives the clamping block 15 to enter the clamping groove 16, so that the fixing block 11 is fixed in the fixing seat 10, fixing of the structured light projector 8 is completed, the output shaft of the motor 9 drives the rotating shaft 7 to rotate, the rotating shaft 7 drives the fixing seat 10 to rotate, the fixing seat 10 drives the fixing block 11, the fixing block 11 drives the structured light projector 8 to rotate, and accordingly the angle of the structured light projector 8 is adjusted.

The utility model discloses a theory of operation:

referring to the specification attached drawings 1-4, the utility model discloses a set up bracing piece 1, CCD camera 2, telecentric lens 3, annular light source 4, curb plate 6, structure light projector 8, determinand body 5 and pivot 7, can make this 3D sensor both can measure the height information on object surface by the high accuracy, can also obtain accurate 2D edge dimension, strengthened the adaptability of 3D sensor, make it can satisfy complicated diversified measurement demand, the various complicated detection demand of adaptation that can be good.

Further, referring to fig. 1-3 in the specification, the present invention provides a connecting rod 13, a fixing block 11, a clamping groove 16, a side plate 6, a groove 12, a rotating shaft 7, a fixing seat 10, a spring 14, and a motor 9, so that the fixing block 11 is fixed in the fixing seat 10, and the structured light projector 8 is quickly fixed and detached, and the fixing block 11 drives the structured light projector 8 to rotate, thereby adjusting the angle of the structured light projector 8.

Claims

1. A vision measurement sensor that 2D and 3D combine, includes bracing piece (1), its characterized in that: bracing piece (1) outer wall is equipped with CCD camera (2), CCD camera (2) bottom is equipped with telecentric lens (3), telecentric lens (3) bottom cover is equipped with annular light source (4), annular light source (4) below is equipped with determinand body (5), bracing piece (1) bottom symmetry is equipped with curb plate (6), two rotate between curb plate (6) and be equipped with pivot (7), keep away from bracing piece (1) below CCD camera (2) one end is equipped with structured light projector ware (8).

2. A 2D and 3D combined vision measurement sensor as claimed in claim 1, wherein: pivot (7) outer wall one end extends to curb plate (6) outside is equipped with motor (9), pivot (7) outer wall cover is equipped with fixing base (10), fixing base (10) inner wall slides and is equipped with fixed block (11), fixing base (10) inner wall symmetry is equipped with recess (12), recess (12) inner wall rotates and is equipped with connecting rod (13), connecting rod (13) outer wall one end is equipped with spring (14), connecting rod (13) outer wall other end is equipped with fixture block (15).

3. A 2D and 3D combined vision measurement sensor as claimed in claim 2, wherein: the fixing seat (10) is located between the two side plates (6), a placing groove matched with the fixing block (11) is formed in the bottom of the fixing seat (10), and the structured light projector (8) is arranged at the bottom end of the fixing block (11).

4. A 2D and 3D combined vision measurement sensor as claimed in claim 2, wherein: connecting rod (13) inner wall through pivot (7) with recess (12) rotate, connecting rod (13) cover is located pivot (7) outer wall, pivot (7) outer wall both ends all with recess (12) inner wall rotates the connection, fixed block (11) inner wall symmetry is equipped with draw-in groove (16), fixture block (15) with draw-in groove (16) phase-match.

5. A2D and 3D combined vision measurement sensor as claimed in claim 4, wherein: one end, far away from the connecting rod (13), of the outer wall of the spring (14) is connected with the groove (12), and the outer wall of the connecting rod (13) extends to the inner wall of the clamping groove (16) and is provided with the clamping block (15).

6. A 2D and 3D combined vision measurement sensor as claimed in claim 2, wherein: the output shaft of the motor (9) is connected with the rotating shaft (7), the top end of the motor (9) is provided with a top plate, and the outer wall of the top plate is connected with the outer wall of one of the side plates (6) close to the motor (9).