CN109632869A - Refractory material image collecting device based on machine vision - Google Patents

Refractory material image collecting device based on machine vision Download PDF

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Publication number
CN109632869A
CN109632869A CN201910099807.8A CN201910099807A CN109632869A CN 109632869 A CN109632869 A CN 109632869A CN 201910099807 A CN201910099807 A CN 201910099807A CN 109632869 A CN109632869 A CN 109632869A
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CN
China
Prior art keywords
horizontal
longitudinal
fixed
refractory
light source
Prior art date
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Pending
Application number
CN201910099807.8A
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Chinese (zh)
Inventor
王兴东
刘亚径
蒋宇辉
刘胜利
王郢瑞
朱青友
刘钊
郑宏雷
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Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
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Wuhan University of Science and Engineering WUSE
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Application filed by Wuhan University of Science and Engineering WUSE filed Critical Wuhan University of Science and Engineering WUSE
Priority to CN201910099807.8A priority Critical patent/CN109632869A/en
Publication of CN109632869A publication Critical patent/CN109632869A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N25/00Investigating or analyzing materials by the use of thermal means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01Arrangements or apparatus for facilitating the optical investigation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications

Abstract

The present invention relates to a kind of refractory material image collecting device based on machine vision.Its technical solution is: described image acquisition device by mounting rack (1), horizontal movement system (2), vertically move system (3), image capturing system (4), light source (5), refractory material fixed device (6) and refractory material rack (7) forms.Horizontal movement system (2) is horizontally fixed on the top of mounting rack (1) along the length direction of mounting rack (1), and the longitudinal pedestal (20) for vertically moving system (3) is fixedly connected with the upper plane of horizontal table (12).Image capturing system (4) is fixedly connected with the system that vertically moves (3), and light source (5) is mounted on light source fixing frame (9).Refractory material fixed device (6) is placed in the vertical equity guide rail (34) of refractory material rack (7) by triangle joint frame (30).The present invention has the characteristics that compact-sized, adaptable and easy to operate, is able to achieve precise motion control, the figure of acquisition is clear, provides reliable basis for the image procossing in later period.

Description

Refractory material image collecting device based on machine vision
Technical field
The invention belongs to refractory material image collecting device technical fields.More particularly to a kind of fire resisting based on machine vision Images of materials acquisition device.
Background technique
Refractory material is widely used in hot industry in recent years, and working environment is severe, is faced with flexible and changeable Temperature control and frequent temperature fluctuation.Therefore, the anti-thermal shock damage generated in application process is to shorten refractory material The principal element in service life, therefore the anti-thermal shock damage for studying refractory material is that technical staff is of interest.
The characteristics of NI Vision Builder for Automated Inspection is the flexibility and the degree of automation for improving production.It is not suitable for manual work some Dangerous work environment or artificial vision be difficult to the occasion met the requirements, machine in normal service vision substitutes artificial vision;Exist simultaneously In industrial processes, the degree of automation of production efficiency and production can be greatly improved with machine vision detection method.
Image collecting device is in astronomy, space flight, military field and quality inspection, production prison in modern industrial process Depending on having a wide range of applications in the fields such as, Parts Recognition." image collecting device " (CN109194842A) is that a kind of utilize is reflected The device of principle progress Image Acquisition.This device has used a large amount of reflection subassemblies, and the degree of automation is not high, and the imaging is not clear, by Human factor is affected, and control section is excessively complicated, and test accuracy and large error actually occurs, is unfavorable for making essence True judgement.The device limitation is larger, with the continuous improvement of China's modern production level, existing image collecting device It is impossible to meet the requirements of production level.
Summary of the invention
The present invention is directed to overcome prior art defect, and it is an object of the present invention to provide a kind of compact-sized, adaptable and operation letter Single refractory material image collecting device based on machine vision, the device are able to achieve accurate motion control, and the figure of acquisition is clear It is clear, reliable basis is provided for the image procossing in later period.
To achieve the above object, the technical solution adopted by the present invention is that:
The refractory material image collecting device by mounting rack, horizontal movement system, vertically move system, Image Acquisition system The fixed device of system, light source, refractory material and refractory material rack composition.
Mounting rack is made of support frame and light source fixing seat.Support frame is perpendicular by upper rectangular frame, lower rectangular frame and four Straight beam composition;Four angles of four vertical beams respectively with upper rectangular frame and lower rectangular frame are correspondingly connected with, upper rectangular frame and Distance between lower rectangular frame is 0.3~0.4 times of vertical depth of beam;The long side of lower rectangular frame is symmetrically equipped with 2 light sources Fixing seat.
Horizontal movement system includes first motor, horizontal leading screw, horizontal table, horizontal guide rail, horizontal base and first Bearing plate.
The upper plane of fixed two short sides of rectangular frame on the support frame of horizontal base, horizontal base is parallel and close to support The rear long side of the upper rectangular frame of frame;The left end of horizontal base and right end are accordingly equipped with motor flange piece and first bearing piece, One end of horizontal leading screw is mounted in first bearing piece, and first motor is fixedly connected with motor flange piece, the output of first motor Axis is connected by shaft coupling and the other end of horizontal leading screw;Horizontal guide rail is fixed on the upper plane of horizontal base, horizontal table Sliding slot be movably mounted on horizontal guide rail;Horizontal table is equipped with horizontal screw hole, the horizontal screw hole and transverse direction of horizontal table Threads of lead screw connection.
Vertically move system include the second motor, longitudinal leadscrew, first longitudinal direction workbench, longitudinal rail, longitudinal pedestal and Second bearing piece.
The top and bottom of longitudinal pedestal are accordingly equipped with motor flange piece and second bearing piece, one end peace of longitudinal leadscrew In second bearing piece, the second motor is fixedly connected with motor flange piece, and the output shaft of the second motor by shaft coupling and is indulged It is connected to the other end of lead screw;Longitudinal rail is fixed on the leading flank of longitudinal pedestal, and the sliding slot of first longitudinal direction workbench is actively On longitudinal rail;First longitudinal direction workbench is equipped with longitudinal screw hole, the screw hole and longitudinal leadscrew screw thread of first longitudinal direction workbench Connection;The trailing flank of longitudinal pedestal for vertically moving system is fixedly connected with the horizontal table of horizontal movement system.
Image capturing system includes second longitudinal direction workbench, connecting plate, camera and telecentric lens;The side of connecting plate and the Two longitudinal workbench connections;Telecentric lens are connected by the other side of camera and connecting plate, after the second longitudinal direction workbench Side is fixedly connected with the leading flank of first longitudinal direction workbench.
Light source includes light source connecting plate and strip source;The both ends of strip source are symmetrically fixed with light source connecting plate, light Source connecting plate top is mounted in light source fixing seat, and the direction of illumination of strip source and the angle of horizontal plane are 30~45 °;Light source The upper end of connecting plate is fixedly connected with the light source fixing seat of support frame.
The fixed device of refractory material includes handle, idler wheel, triangle joint frame, flange and fixture;Fixture is by cabinet and fixation Board group is at being respectively fixed with fixed plate in the quadrangle of cabinet, corresponding short side plate inner wall, long side are close in the big face of fixed plate respectively The inner wall of plate is evenly and symmetrically fixed, and there are two fixed plates;The Handle axis of handle passes through triangle joint frame and the fixed company of flange It connects, flange is symmetrically fixed on the short slab outer wall of cabinet, and two idler wheels are movably mounted to the bottom of triangle joint frame respectively.
Refractory material rack is made of fixed frame and vertical equity guide rail;Fixed frame is in cube frame structure, Zong Xiangshui Level gauge is horizontally mounted at the right and left on fixed frame top respectively;Idler wheel is actively placed on vertical equity guide rail.
Refractory material rack and mounting rack are fixed on ground, and refractory material rack is located at the center position of mounting rack.
Due to the adoption of the above technical scheme, the present invention has following good effect compared with prior art:
The first, present invention utilizes strip source lighting methods, keep the surface brightness of refractory material to be measured uniform, image matter Amount is high.
The second, image capturing system of the invention has used telecentric lens, telecentric lens have high-resolution, low distortion and The characteristics of ultra-wide depth of field, can be in biggish object distance range, the image enlargement ratio made will not become with the variation of object distance Change, picture quality can be significantly improved, provide reliable foundation for subsequent image procossing.
Third, the present invention mainly by horizontal movement system, vertically move system and image capturing system forms, structure is tight It gathers, it is easy to use, it is able to achieve accurate motion control, the Image Acquisition of refractory material can be effectively realized, can be well adapted to Site environment.
4th, between three blocks of refractory brick to be measured are placed in the fixed plate of fixture when in use, first by the present apparatus, around refractory brick It is heat-insulated using refractory cotton;Holding handle again makes three pieces of refractory brick alignment fire doors to be measured, and fixture is slowly moved into furnace and is heated.Pass through It vertically moves system and horizontal movement system adjustment camera and refractory brick to be measured is taken pictures the distance in face, rotation lens focusing ring is realized It focuses, makes its imaging clearly.For three blocks of refractory brick to be measured after heating and cooling, camera is first being moved to leftmost side refractory brick just Top is taken pictures, and then to the right, is successively taken pictures to other two refractory brick to be measured, that is, completes the image of refractory brick sample Acquisition.Therefore the present apparatus image clearly easy to operate with acquisition, it is adaptable.
Therefore, the present invention has the characteristics that compact-sized, adaptable and easy to operate, is able to achieve precise motion control, The figure of acquisition is clear, provides reliable basis for the image procossing in later period.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention;
Fig. 2 is the schematic diagram of mounting rack 1 in Fig. 1;
Fig. 3 is the enlarged diagram of horizontal movement system 2 in Fig. 1;
Fig. 4 is the enlarged diagram that system 3 is vertically moved in Fig. 1;
Fig. 5 is the enlarged diagram of image capturing system 4 in Fig. 1;
Fig. 6 is the enlarged diagram of light source 5 in Fig. 1;
Fig. 7 is the enlarged diagram of the fixed device 6 of refractory material in Fig. 1;
Fig. 8 is the enlarged diagram of refractory material rack 7 in Fig. 1.
Specific embodiment
The present invention is described further with reference to the accompanying drawings and detailed description, so as to specific reality of the invention Applying mode and some details has more thorough explanation.
Embodiment 1
A kind of refractory material image collecting device based on machine vision.As shown in Figure 1, the refractory material Image Acquisition Device by mounting rack 1, horizontal movement system 2, vertically move the fixed dress of system 3, image capturing system 4, light source 5, refractory material Set 6 and the composition of refractory material rack 7.
As shown in Fig. 2, mounting rack 1 is made of support frame 8 and light source fixing seat 9.Support frame 8 is by upper rectangular frame, lower square Shape frame and four vertical beam compositions;Four vertical beams are corresponding with four angles of upper rectangular frame and lower rectangular frame respectively to be connected It connects, the distance between upper rectangular frame and lower rectangular frame is 0.3~0. times of vertical depth of beam;The long side of lower rectangular frame is symmetrical Ground is equipped with 2 light source fixing seats 9.
As shown in figure 3, horizontal movement system 2 is led including first motor 10, horizontal leading screw 11, horizontal table 12, level Rail 13, horizontal base 14 and first bearing piece 15.
As shown in figure 3, horizontal base 14 is fixed on the upper plane of two short sides of rectangular frame on support frame 8, horizontal base 14 parallel and close to the upper rectangular frame of support frame 8 rear long side;The left end of horizontal base 14 and right end are accordingly equipped with motor Flange plate and first bearing piece 15, one end of horizontal leading screw 11 are mounted in first bearing piece 15, first motor 10 and motor method Blue piece is fixedly connected, and the output shaft of first motor 10 is connect by shaft coupling with the other end of horizontal leading screw 11;Horizontal guide rail 13 It is fixed on the upper plane of horizontal base 14, the sliding slot of horizontal table 12 is movably mounted on horizontal guide rail 13;Horizontal table 12 are equipped with horizontal screw hole, and the horizontal screw hole of horizontal table 12 is threadedly coupled with horizontal leading screw 11.
Include the second motor 16, longitudinal leadscrew 17, first longitudinal direction workbench 18, indulge as shown in figure 4, vertically moving system 3 Direction guiding rail 19, longitudinal pedestal 20 and second bearing piece 21.
As shown in figure 4, the top and bottom of longitudinal pedestal 20 are accordingly equipped with motor flange piece and second bearing piece 21, indulge It is mounted in second bearing piece 21 to one end of lead screw 17, the second motor 16 is fixedly connected with motor flange piece, the second motor 16 Output shaft connect with the other end of longitudinal leadscrew 17 by shaft coupling;Longitudinal rail 19 is fixed on the front side of longitudinal pedestal 20 Face, the sliding slot of first longitudinal direction workbench 18 are movably mounted on longitudinal rail 19;First longitudinal direction workbench 18 is equipped with longitudinal screw hole, The screw hole of first longitudinal direction workbench 18 is threadedly coupled with longitudinal leadscrew 17;Vertically move the trailing flank of longitudinal pedestal 20 of system 3 It is fixedly connected with the horizontal table 12 of horizontal movement system 2.
As shown in figure 5, image capturing system 4 includes second longitudinal direction workbench 22, connecting plate 23, camera 24 and telecentric lens 25;The side of connecting plate 23 is connect with second longitudinal direction workbench 22;Telecentric lens 25 are another by camera 24 and connecting plate 23 Side connection, the trailing flank of the second longitudinal direction workbench 22 is fixedly connected with the leading flank of first longitudinal direction workbench 18.
As shown in fig. 6, light source 5 includes light source connecting plate 26 and strip source 27;The both ends of strip source 27 are symmetrically solid Surely there is light source connecting plate 26,26 top of light source connecting plate is mounted in light source fixing seat 9, the direction of illumination and water of strip source 27 The angle of plane is 30~45 °;The upper end of light source connecting plate 26 is fixedly connected with the light source fixing seat 9 of support frame 8.
As shown in fig. 7, the fixed device 6 of refractory material includes handle 28, idler wheel 29, triangle joint frame 30, flange 31 and folder Tool 32;Fixture 32 is made of cabinet and fixed plate, is respectively fixed with fixed plate in the quadrangle of cabinet, the big face difference of fixed plate is tight Corresponding short side plate inner wall is pasted, the inner wall of long side plate is evenly and symmetrically fixed, and there are two fixed plates;The Handle axis of handle 28 is worn It crosses triangle joint frame 30 to be fixedly connected with flange 31, flange 31 is symmetrically fixed on the short slab outer wall of cabinet, and two idler wheels 29 divide It is not movably mounted to the bottom of triangle joint frame 30.
As shown in figure 8, refractory material rack 7 is made of fixed frame 33 and vertical equity guide rail 34;Fixed frame 33 is in cube Body frame structure, vertical equity guide rail 34 are horizontally mounted at the right and left on 33 top of fixed frame respectively;Idler wheel 29 is actively It is placed on vertical equity guide rail 34.
As shown in Figure 1, refractory material rack 7 and mounting rack 1 are fixed on ground, refractory material rack 7 is located at mounting rack 1 Center position.
Present embodiment has following good effect compared with prior art:
The first, present embodiment lighting method that strip source 27 is utilized, keeps the surface of refractory material to be measured bright Uniformly, picture quality is high for degree.
The second, the image capturing system 4 of present embodiment has used telecentric lens 25, and telecentric lens 25 have high score The characteristics of resolution, low distortion and ultra-wide depth of field, can be in biggish object distance range, the image enlargement ratio made will not be with object Away from variation and change, picture quality can be significantly improved, provide reliable foundation for subsequent image procossing.
Third, present embodiment mainly by horizontal movement system 2, vertically move system 3 and 4 groups of image capturing system At, it is compact structure and easy to use, it is able to achieve accurate motion control, the Image Acquisition of refractory material can be effectively realized, it can be very Good adaptation site environment.
4th, between three blocks of refractory brick to be measured are placed in the fixed plate of fixture 32 when in use, first by the present apparatus, in refractory brick week It encloses heat-insulated using refractory cotton;Holding handle 28 again makes three pieces of refractory brick alignment fire doors to be measured, fixture 32 is slowly moved into furnace and is added Heat.Camera 24 is adjusted by vertically moving system 3 and horizontal movement system 2 and refractory brick to be measured is taken pictures the distance in face, rotates mirror First 25 focusing ring, which is realized, to be focused, its imaging clearly is made.After heating and cooling, camera 24 is first moved to three blocks of refractory brick to be measured It takes pictures right above the refractory brick of the leftmost side, then to the right, successively takes pictures, that is, complete to other two refractory brick to be measured The Image Acquisition of refractory brick sample.Therefore the present apparatus image clearly easy to operate with acquisition, it is adaptable.
Therefore, present embodiment has the characteristics that compact-sized, adaptable and easy to operate, is able to achieve accurate The figure of motion control, acquisition is clear, provides reliable basis for the image procossing in later period.

Claims (1)

1. a kind of refractory material image collecting device based on machine vision, it is characterised in that the refractory material image collector It sets by mounting rack (1), horizontal movement system (2), vertically move system (3), image capturing system (4), light source (5), fire proofed wood Expect fixed device (6) and refractory material rack (7) composition;
Mounting rack (1) is made of support frame (8) and light source fixing seat (9);Support frame (8) is by upper rectangular frame, lower rectangular frame It is formed with four vertical beams;Four angles of four vertical beams respectively with upper rectangular frame and lower rectangular frame are correspondingly connected with, upper square Distance between shape frame and lower rectangular frame is 0.3~0.4 times of vertical depth of beam;The long side of lower rectangular frame is symmetrically equipped with 2 light source fixing seats (9);
Horizontal movement system (2) include first motor (10), horizontal leading screw (11), horizontal table (12), horizontal guide rail (13), Horizontal base (14) and first bearing piece (15);
Horizontal base (14) is fixed on the upper plane of two short sides of rectangular frame on support frame (8), horizontal base (14) it is parallel and Close to the rear long side of the upper rectangular frame of support frame (8);The left end of horizontal base (14) and right end are accordingly equipped with motor flange Piece and first bearing piece (15), one end of horizontal leading screw (11) are mounted in first bearing piece (15), first motor (10) and electricity Machine flange plate is fixedly connected, and the output shaft of first motor (10) is connect by shaft coupling with the other end of horizontal leading screw (11);Water Level gauge (13) is fixed on the upper plane of horizontal base (14), and the sliding slot of horizontal table (12) is movably mounted at horizontal guide rail (13) on;Horizontal table (12) is equipped with horizontal screw hole, the horizontal screw hole and horizontal leading screw (11) screw thread of horizontal table (12) Connection;
Vertically moving system (3) includes the second motor (16), longitudinal leadscrew (17), first longitudinal direction workbench (18), longitudinal rail (19), longitudinal pedestal (20) and second bearing piece (21);
The top and bottom of longitudinal pedestal (20) are accordingly equipped with motor flange piece and second bearing piece (21), longitudinal leadscrew (17) One end be mounted in second bearing piece (21), the second motor (16) is fixedly connected with motor flange piece, the second motor (16) Output shaft is connect by shaft coupling with the other end of longitudinal leadscrew (17);Before longitudinal rail (19) is fixed on longitudinal pedestal (20) Side, the sliding slot of first longitudinal direction workbench (18) are movably mounted on longitudinal rail (19);First longitudinal direction workbench (18) is equipped with The screw hole of longitudinal screw hole, first longitudinal direction workbench (18) is threadedly coupled with longitudinal leadscrew (17);Vertically move the longitudinal direction of system (3) The trailing flank of pedestal (20) is fixedly connected with the horizontal table (12) of horizontal movement system (2);
Image capturing system (4) includes second longitudinal direction workbench (22), connecting plate (23), camera (24) and telecentric lens (25); The side of connecting plate (23) is connect with second longitudinal direction workbench (22);Telecentric lens (25) pass through camera (24) and connecting plate (23) Other side connection, the leading flank of the trailing flank of the second longitudinal direction workbench (22) and first longitudinal direction workbench (18) is fixed to be connected It connects;
Light source (5) includes light source connecting plate (26) and strip source (27);The both ends of strip source (27) are symmetrically fixed with light Source connecting plate (26), light source connecting plate (26) top are mounted on light source fixing seat (9), the direction of illumination of strip source (27) with The angle of horizontal plane is 30~45 °;The upper end of light source connecting plate (26) is fixedly connected with the light source fixing seat (9) of support frame (8);
Refractory material fixed device (6) includes handle (28), idler wheel (29), triangle joint frame (30), flange (31) and fixture (32);Fixture (32) is made of cabinet and fixed plate, is respectively fixed with fixed plate, the big face difference of fixed plate in the quadrangle of cabinet It is close to corresponding short side plate inner wall, the inner wall of long side plate is evenly and symmetrically fixed, and there are two fixed plates;The handle of handle (28) Axis passes through triangle joint frame (30) and is fixedly connected with flange (31), and flange (31) is symmetrically fixed on the short slab outer wall of cabinet, and two A idler wheel (29) is movably mounted to the bottom of triangle joint frame (30) respectively;
Refractory material rack (7) is made of fixed frame (33) and vertical equity guide rail (34);Fixed frame (33) is in cube frame Structure, vertical equity guide rail (34) are horizontally mounted at the right and left on fixed frame (33) top respectively;Idler wheel (29) is actively It is placed on vertical equity guide rail (34);
Refractory material rack (7) and mounting rack (1) are fixed on ground, and refractory material rack (7) is located at the centre bit of mounting rack (1) Set place.
CN201910099807.8A 2019-01-31 2019-01-31 Refractory material image collecting device based on machine vision Pending CN109632869A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101349542A (en) * 2008-06-27 2009-01-21 东南大学 Vision measuring apparatus of large size part
CN102981274A (en) * 2012-12-06 2013-03-20 东莞市盟拓光电科技有限公司 Method for manufacturing mechanism of general machine vision equipment
CN202886294U (en) * 2012-10-17 2013-04-17 汕头大学 Large product surface image capturing device
CN205629480U (en) * 2016-05-27 2016-10-12 常州星宇车灯股份有限公司 Motor -driven car light LED light source positioner based on machine vision
CN108020159A (en) * 2017-11-27 2018-05-11 武汉科技大学 Shaft part size image collecting device based on machine vision
WO2018147478A1 (en) * 2017-02-08 2018-08-16 인제대학교 산학협력단 Device and method for testing terminal crimping of wire harness cable by utilizing machine vision, and method for operating same
CN108896547A (en) * 2018-03-14 2018-11-27 浙江大学山东工业技术研究院 Refractory brick measuring system based on machine vision
CN208281762U (en) * 2018-04-28 2018-12-25 郑州九泰科技有限公司 A kind of probe inspecting for steel frame construction

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101349542A (en) * 2008-06-27 2009-01-21 东南大学 Vision measuring apparatus of large size part
CN202886294U (en) * 2012-10-17 2013-04-17 汕头大学 Large product surface image capturing device
CN102981274A (en) * 2012-12-06 2013-03-20 东莞市盟拓光电科技有限公司 Method for manufacturing mechanism of general machine vision equipment
CN205629480U (en) * 2016-05-27 2016-10-12 常州星宇车灯股份有限公司 Motor -driven car light LED light source positioner based on machine vision
WO2018147478A1 (en) * 2017-02-08 2018-08-16 인제대학교 산학협력단 Device and method for testing terminal crimping of wire harness cable by utilizing machine vision, and method for operating same
CN108020159A (en) * 2017-11-27 2018-05-11 武汉科技大学 Shaft part size image collecting device based on machine vision
CN108896547A (en) * 2018-03-14 2018-11-27 浙江大学山东工业技术研究院 Refractory brick measuring system based on machine vision
CN208281762U (en) * 2018-04-28 2018-12-25 郑州九泰科技有限公司 A kind of probe inspecting for steel frame construction

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