CN212622275U - Integration visual detection module to moving object - Google Patents

Abstract

The utility model provides an integrated visual detection module aiming at moving objects, which comprises a frame, an image acquisition device and a modularized light-gathering type light source, wherein the image acquisition device and the modularized light-gathering type light source are arranged on the frame; the modularized light-gathering type light source comprises a plurality of strip-shaped light-emitting components, the strip-shaped light-emitting components emit diffused light and direct light, the strip-shaped light-emitting components are arranged in groups to form a middle light-emitting section and at least one side light-emitting section, and the side light-emitting section is positioned beside the middle light-emitting section; forming a middle three-dimensional light gathering field in the middle light emitting section; a side stereoscopic light-gathering field is formed in the side light-emitting section, at least a portion of the side stereoscopic light-gathering field overlapping the middle stereoscopic light-gathering field. The high-precision detection device can be suitable for high-precision detection of small areas and also use large-area high-precision detection, can also realize multi-angle three-dimensional detection, is good in product flexibility, is easy to disassemble, assemble and adjust, and has remarkable improvement in installation efficiency and debugging efficiency.

Description

Integration visual detection module to moving object

Technical Field

The utility model relates to a surface detection technical field particularly, relates to an integration visual detection module to moving object.

Background

With the development of the technology, machine vision inspection is increasingly applied to the field of workpiece surface quality inspection. In a machine vision inspection system, an image acquisition device and a light source are two important components, wherein the image acquisition device is used for acquiring a workpiece surface image, and the light source is used for providing illumination so that an image acquisition device can obtain a clear high-quality image. The defects of the image acquisition device and the light source and the defects of technical means on the coordination of the image acquisition device and the light source can influence the performance of the machine vision detection system, such as accuracy, efficiency and the like.

The light sources in the prior art have defects, for example, some light sources are low in brightness when acting on the surface of an object to be detected, and high-quality images are difficult to extract, for example, some light sources can only meet the requirement that image acquisition equipment carries out detection of a single angle or a small range area, and multi-angle three-dimensional detection is difficult to realize. With the further development of the technology, although some light-gathering light sources are provided, for example, a plurality of lamp beads are fixed on a hemispherical shell, the improved technology still has defects, for example, the light-gathering effect is poor; the brightness of a certain area can be improved only by condensing light, and multi-angle three-dimensional detection is difficult to realize; the brightness of one or more specific points or specific area areas is high, and the brightness of other areas is insufficient, so that the brightness change is large, and the method is difficult to be used for high-quality visual detection of products with large areas; the flexibility is poor, the performance of the whole light source is obviously reduced due to the damage of part of the lamp beads, and the lamp beads are difficult to disassemble, assemble and adjust after being installed; the lamp pearl on the hemispherical casing generates heat easily, because of the restriction of structure, shape, is difficult to set up simple, reliable heat radiation structure.

And, there are few kinds of performance that the light-gathering shape light source can detect among the prior art, and many kinds of surface quality of work piece are difficult to detect when using light-gathering shape light source. Therefore, there is an urgent need for a light source that can realize multi-angle three-dimensional detection, has a good polishing effect, is easier to maintain and adjust, and is suitable for more kinds of performance detection.

In addition, in the prior art, the image acquisition device and the light source are independently arranged, and external light, facilities and the like easily interfere with a visual detection system, so that the image acquisition quality is influenced.

In addition, in the prior art, the image acquisition device and the light source are respectively and independently controlled, and for high-frequency control when the LED light source is adopted, for example, when the high-frequency on-off control is carried out under the condition of 1KHZ-20KHZ, the mutual coordination response speed between the image acquisition and the light-emitting control is slow, the synchronism is poor, and the image acquisition quality is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art not enough, the utility model provides an integration visual detection module to moving object, it can solve at least one among the aforementioned technical problem, and concrete technical scheme is as follows:

an integrated visual detection module aiming at a moving object comprises a rack, an image acquisition device and a modularized light-gathering type light source, wherein the image acquisition device and the modularized light-gathering type light source are arranged on the rack; the modularized light-gathering type light source comprises a plurality of strip-shaped light-emitting assemblies, wherein the strip-shaped light-emitting assemblies emit diffused light and direct light, the length directions of the strip-shaped light-emitting assemblies face the movement direction of an object to be detected, the strip-shaped light-emitting assemblies are arranged in groups to form a middle light-emitting section and at least one side light-emitting section, and the side light-emitting sections are positioned beside the middle light-emitting section;

in the middle light-emitting section, a plurality of strip-shaped light-emitting assemblies are arranged at intervals around the movement direction of the detected object, the middle light-emitting section is in an arc shape, the convergence positions of direct light of the strip-shaped light-emitting assemblies are multiple to form a plurality of light-gathering areas, and the light-gathering areas and diffused light are overlapped to form a middle three-dimensional light-gathering field;

in the side light-emitting section, a plurality of strip-shaped light-emitting assemblies are arranged at intervals around the movement direction of an object to be detected, so that the side light-emitting section is in an arc shape, the convergence positions of direct light of the strip-shaped light-emitting assemblies are multiple to form a plurality of light-gathering areas, the light-gathering areas and diffused light are overlapped to form a side three-dimensional light-gathering field together, one end, far away from the middle light-emitting section, of each strip-shaped light-emitting assembly is inclined downwards, and at least one part of the side three-dimensional light-gathering field is overlapped with the middle three-dimensional light-gathering.

In a specific embodiment, in the middle light-emitting section, the direct light emitted from a first strip-shaped light-emitting component and the direct light emitted from more than one other strip-shaped light-emitting components are converged to form a first light-condensing region, the direct light emitted from a second strip-shaped light-emitting component and the direct light emitted from more than one other strip-shaped light-emitting components are converged to form a second light-condensing region, and the like, a plurality of light-condensing regions are formed, are distributed at different positions and are overlapped with diffused light to form a middle stereoscopic light-condensing field;

and/or in the side light-emitting section, the direct light emitted from a first strip-shaped light-emitting component and the direct light emitted from more than one other strip-shaped light-emitting component are converged to form a first light-gathering area, the direct light emitted from a second strip-shaped light-emitting component and the direct light emitted from more than one other strip-shaped light-emitting component are converged to form a second light-gathering area, and the like, a plurality of light-gathering areas are formed, are distributed at different positions and are overlapped with the diffused light to form a side stereoscopic light-gathering area.

In a specific embodiment, the number of the side light-emitting segments is two, and the side light-emitting segments are a left side light-emitting segment and a right side light-emitting segment, and the left side light-emitting segment and the right side light-emitting segment are distributed on two sides of the middle light-emitting segment.

In a specific embodiment, the image acquisition device is arranged above the modular light-gathering light source, a strip-shaped gap is formed between two strip-shaped light-emitting assemblies at the center of the top of the middle light-emitting section, and other strip-shaped light-emitting assemblies of the middle light-emitting section are distributed on two sides of the strip-shaped gap;

the image acquisition device comprises a linear image acquisition camera, the linear image acquisition camera is over against the strip-shaped gap, and the image scanning direction of the linear image acquisition camera is linear and is basically vertical to the motion direction of the detected object;

preferably, a partition plate is arranged between the image acquisition device and the modular light-gathering light source, a strip-shaped through hole is formed in the area, opposite to the strip-shaped gap, of the partition plate, and the linear image acquisition camera is opposite to the strip-shaped through hole; further preferably, a bottom frame is disposed at the bottom of the frame, and the bottom frame exposes the light-emitting region of the modular concentrating light source and covers the non-light-emitting region.

In a specific embodiment, the modular spotlight type light source further comprises a light source bracket assembly, the light source bracket assembly is mounted on the frame, and the strip-shaped light emitting assembly in the middle lighting section and the strip-shaped light emitting assembly in the side lighting section are respectively detachably mounted on the light source bracket assembly;

preferably, be provided with integrated circuit interface module in the frame, integrated circuit interface module's one end interface is for exposing the quick interface of frame, and the other end interface has a plurality of wiring units and connects corresponding bar light emitting component respectively.

In a specific embodiment, each strip-shaped light-emitting component comprises a light bar, the light bar is in a strip-shaped structure, and a plurality of LED lamp beads are arrayed on the front surface of the light bar;

the back of the light bar is provided with a heat dissipation device, the heat dissipation device comprises a heat conduction substrate and a plurality of heat dissipation fins, the heat conduction substrate is connected with the back of the light bar, the heat dissipation fins are connected with the heat conduction substrate, and gaps are formed among the heat dissipation fins;

the bar-shaped light emitting assembly further comprises a bar-shaped condensing lens located in front of the light bar.

In a specific embodiment, the strip-shaped light-emitting assembly further comprises a clamping plate assembly, the clamping plate assembly comprises a plurality of plate bodies, a clamping space for mounting the light bar is formed among the plurality of plate bodies, a mounting structure for mounting the light bar is arranged on one part of the plurality of plate bodies, the plurality of plate bodies extend to the peripheral area in front of the light bar, a light outlet is formed right in front of the light bar, the strip-shaped condensing lens is fixed on one part of the plate bodies, and preferably, a plurality of grid holes are formed in the plate bodies extending to the peripheral area in front of the light bar;

or, the strip-shaped light-emitting component further comprises a supporting side plate, and the light bar and the condensing lens are respectively arranged on the supporting side plate.

In a specific embodiment, the light source bracket assembly comprises a hanging frame and arc-shaped substrates, and in the middle light-emitting section, each strip-shaped light-emitting assembly is detachably arranged between the two arc-shaped substrates at intervals; and in the side light-emitting section, strip-shaped light-emitting assemblies are detachably mounted on one side of the arc-shaped substrate, which is far away from the strip-shaped light-emitting assemblies, at intervals.

In a specific embodiment, the image acquisition device is mounted on the frame through a multi-stage adjustable platform;

preferably, the multistage adjustable platform comprises a first rotating platform, a second rotating platform and an XY-axis double-layer angular displacement platform, a rotating part of the first rotating platform is connected with the image acquisition device through a first adapter, a fixing part of the first rotating platform is connected with the top of the XY-axis double-layer angular displacement platform, a rotating surface of the rotating part of the first rotating platform is a horizontal plane, a fixing part of the second rotating platform is fixedly connected with the rack, a rotating surface of the rotating part of the second rotating platform is perpendicular to the horizontal plane, and the bottom of the XY-axis double-layer angular displacement platform is connected with the rotating part of the second rotating platform through a second adapter;

preferably, the multistage adjustable platform comprises a first rotating platform and an XY-axis double-layer angular displacement platform, a rotating part of the first rotating platform is connected with the image acquisition device through a first adapter, a fixing part of the first rotating platform is connected with the top of the XY-axis double-layer angular displacement platform, a rotating surface of the rotating part of the first rotating platform is a horizontal plane, and the bottom of the XY-axis double-layer angular displacement platform is connected with the rack through a second adapter.

In a specific embodiment, the integrated control system further comprises a power module, a driving circuit, an information processing circuit and a communication circuit which are distributed on the plurality of PCB boards, the information processing circuit receives a control signal of an upper computer through the communication circuit, and the information processing circuit synchronously controls the image acquisition device and the modularized light-gathering type light source according to the control signal of the upper computer.

The utility model discloses following beneficial effect has at least:

the utility model discloses in, image acquisition device and modularization spotlight type light source set up in the frame, have formed integration module structure, not only can improve equipment's installation effectiveness, reduce the debugging, reduce the fault rate, can also reduce external light, facility etc. and help promoting the image acquisition quality to visual detection system's interference. And, the modularization spotlight type light source includes a plurality of bar light emitting component, light emitting component's direction uniformity is better, the photic area is bigger, the operator no longer need install single lamp pearl one by one when setting up the light source, once adjust the lamp strip and can make the position angle of a plurality of LED lamp pearls all adjusted on the lamp strip, also need not carry out the one-to-one adjustment to the angle of every lamp pearl in order to realize spotlight effect, the installation effectiveness of equipment has further been promoted, and equipment flexibility is better, partial lamp pearl damages and can not lead to whole light source performance to show to reduce, each module is easily dismantled and assembled and adjusted, the change of both being convenient for, also make the product can adjust quantity according to target parameter rapidly, the angle.

And the utility model discloses in, a plurality of bar light-emitting component's length direction orientation is detected the direction of motion of object, and a plurality of bar light-emitting component are arranged by groups to form middle part light-emitting section and at least one lateral part light-emitting section, lateral part light-emitting section is located the side of middle part light-emitting section. In the middle light-emitting section, a plurality of strip-shaped light-emitting components are arranged at intervals around the movement direction of the detected object, so that the middle light-emitting section is arc-shaped, light rays of the strip-shaped light-emitting components are converged to form a middle light-receiving surface, and the extension direction of the light-receiving surface is consistent with the movement direction of the detected object; in the side light-emitting section, a plurality of strip-shaped light-emitting components are arranged at intervals around the movement direction of the detected object, so that the side light-emitting section is arc-shaped, light rays of the strip-shaped light-emitting components are converged to form a side light-receiving surface, and one end, far away from the middle light-emitting section, of the strip-shaped light-emitting components is inclined downwards, so that at least one part of the side light-receiving surface is overlapped with the middle light-receiving surface. The strip-shaped light emitting component emits diffused light and direct light, and each point on the light receiving surface of the middle part and the light receiving surface of the side part is formed by overlapping the diffused light and the direct light.

Therefore, the brightness of the detection area can be remarkably improved, and light can be converged into the detection area with a larger area, so that the method is suitable for high-precision detection with a small area and high-precision detection with a large area. And the device is suitable for bright field detection and dark field detection, so that the light irradiation with enough brightness is performed on a plurality of surfaces or non-planar surfaces of the detected workpiece, and further, more types of surface detection such as length, width, height, scars, pollutants, flatness and the like can be realized by fewer detection tables.

Furthermore, the light intensity of each point on the middle light receiving surface and the side light receiving surface is not uniform, and a three-dimensional light gathering field is formed at the isocandela position.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a first perspective view of the integrated vision inspection module of embodiment 1;

FIG. 2 is a second perspective view of the integrated vision inspection module of embodiment 1;

FIG. 3 is a third perspective view of the integrated vision inspection module of embodiment 1;

fig. 4 is a perspective view of a modular condensing type light source in example 1;

fig. 5 is a side view of a modular concentration type light source in example 1;

FIG. 6 is a partial enlarged view of the spot area of FIG. 5;

FIG. 7 is a perspective view of a strip light emitting module in example 1;

FIG. 8 is an exploded view of a strip light emitting element in example 1;

FIG. 9 is a schematic view of a light bar of embodiment 1;

FIG. 10 is a schematic view of an image pickup apparatus according to embodiment 1;

FIG. 11 is a perspective view of an XY-axis double-layer angular displacement stage in example 1;

FIG. 12 is an exploded view of the lower angular displacement platform of example 1;

fig. 13 is a perspective view of a second rotary platform in embodiment 1;

fig. 14 is a perspective view of a first rotary platform in embodiment 1;

fig. 15 is an exploded view of a second rotary platform in example 1;

FIG. 16 is a perspective view of an integrated vision inspection module according to embodiment 2;

fig. 17 is a perspective view of a strip light emitting module in embodiment 2.

Description of the main element symbols:

1-a housing; 2-a separator; 3-a bar-shaped light emitting component; 4-an image acquisition device; 5-an external cable; 7-direct light; 8-strip-shaped through holes; 9-a first adapter rack; a 10-XY axis double-layer angular displacement platform; 11-a second rotary platform; 12-linear scan field of view; 13-a first rotating platform; 101-upper angular displacement platform; 102-a lower angular displacement platform; 103. 105-a stop; 104. 106-differential regulation head; 107-locking means; 108-an arcuate mating surface; 109-long holes; 1021-a mobile station; 1022-a base; 1101-a rotation stage; 1102-rotation ring; 1103-a base; 1104-a locking device; 1105-adjusting screws; 1106-differential regulation head; 31-a cleat assembly; 32-a heat sink; 321-a thermally conductive substrate; 322-a heat sink; 33-grid holes; 34-a light bar; 35-a strip-shaped condensing lens; 341-lamp beads; 21-a light-gathering area; 22-a second adapter rack; 23-vertical frame; 24-transverse frame.

Detailed Description

Example 1

As shown in fig. 1-3, the present embodiment provides an integrated visual inspection module for a moving object, which includes a frame, an image capturing device 4, and a modular light-gathering type light source, wherein the frame includes an outer cover 1, and the image capturing device 4 and the modular light-gathering type light source are disposed in the outer cover 1. Wherein, image acquisition device 4 and modularization spotlight type light source set up in dustcoat 1, can reduce interference to vision detecting system such as external light, facility, help promoting image acquisition quality.

In a preferred embodiment, the image capture device 4, the modular concentrator light source, and the housing 1 form an integrated modular structure, and the external cable 5 connects the image capture device and the modular concentrator light source through ports 14, 15, etc. This integral structure can improve the installation effectiveness of equipment, reduce the debugging, reduce the fault rate.

As shown in fig. 4 and 5, the modular light-condensing light source includes a plurality of strip-shaped light-emitting assemblies 3, wherein, as shown in fig. 7 to 9, in a preferred embodiment, the strip-shaped light-emitting assemblies 3 include a light bar 34, the light bar 34 has a strip-shaped structure, and a plurality of LED beads 341 are arrayed on the front surface of the light bar 34. The heat sink 32 is disposed on the back of the light bar 34, and the heat sink 32 absorbs the heat of the light bar 34 and diffuses into the air. The heat dissipation device 32 includes a heat conductive substrate 321 and a plurality of heat dissipation fins 322, the heat conductive substrate 321 is connected to the back surface of the light bar 34, the heat dissipation fins 322 are connected to the heat conductive substrate 321, and gaps are formed between the heat dissipation fins 322.

In this embodiment, the bar-shaped light emitting assembly 3 further includes a clamping plate assembly 31, the clamping plate assembly 31 includes a plurality of plate bodies, a clamping space for mounting the light bar 34 is formed between the plurality of plate bodies, a mounting structure for mounting the light bar 34 is provided on one of the plurality of plate bodies, the plurality of plate bodies extend to the peripheral area in front of the light bar 34, and a light outlet is formed right in front of the light bar 34. Exemplarily, the number of the plate bodies is four, and the four plate bodies are a first plate body, a second plate body, a third plate body and a fourth plate body, and the four plate bodies are fixed around the light bar 34 and extend to the peripheral area in front of the light bar 34, and a light outlet is formed in a space surrounded by the four plate bodies in front of the light bar 34, so that at least a part of the light emitted by the light bar 34 is guided by the plate bodies and then is emitted from the light outlet.

Preferably, the strip-shaped light emitting assembly 3 further comprises a strip-shaped condensing lens 35 located right in front of the light bar 34, and the strip-shaped condensing lens 35 is fixed on a part of the plate body. Due to the arrangement of the strip-shaped condensing lens 35, at least a part of the light emitted from the light bar 34 is condensed into the direct light 7 by the diffused light through the condensing action of the strip-shaped condensing lens 35 during the process of being emitted from the light outlet.

Preferably, a plurality of grid holes 33 are provided in the panel body extending to the peripheral region in front of the light bar 34. In this embodiment, the grid holes 33 in the plate body make the modular concentrator light source a significant improvement over the prior art as a whole. On the one hand, the heat in front of the lamp strip 34 can be dissipated through the grid holes 33 on the plate body, so that the heat dissipation device 32 on the back of the lamp strip 34 is in a main heat dissipation mode, the grid holes 33 on the plate body are in an auxiliary heat dissipation mode, and the two modes act together, so that the heat generated when the lamp strip 34 emits light can be diffused in time, the heat dissipation effect is better, and the heat dissipation position is more comprehensive. On the other hand, a portion of the diffused light emitted from the light bar 34 exits through the openings in the grill.

In this embodiment, the length direction of the plurality of bar-shaped light emitting assemblies 3 faces the moving direction of the detected object, and the plurality of bar-shaped light emitting assemblies 3 are arranged in groups to form a middle light emitting section and at least one side light emitting section, and the side light emitting section is located beside the middle light emitting section.

In a first preferred embodiment, the number of the side lighting segments is two, one side lighting segment is located at the front side of the middle lighting segment, and the other side lighting segment is located at the rear side of the middle lighting segment. The front side of the middle light-emitting section refers to one side of the middle light-emitting section facing the moving direction of the detected object, and the rear side of the middle light-emitting section is the side opposite to the front side. When the detected object is positioned right below the middle light-emitting section, the front side of the middle light-emitting section is closer to the front of the detected object, and the rear side of the middle light-emitting section is closer to the rear of the detected object.

In a second preferred embodiment, the number of the side lighting segments is one, and the one side lighting segment is located at the front side of the middle lighting segment.

In a third preferred embodiment, the number of the side lighting segments is one, and the one side lighting segment is located at the rear side of the middle lighting segment.

As shown in fig. 4-6, in the middle light-emitting section, a plurality of strip-shaped light-emitting assemblies 3 are arranged above the detected object at intervals from left to right along the arc direction, so that the middle light-emitting section is in the shape of an arc, and the long side direction of the strip-shaped light-emitting assemblies 3 is substantially consistent with the moving direction of the detected object.

In the middle light-emitting section, the light convergence positions of the plurality of strip-shaped light-emitting assemblies 3 are a plurality of light-gathering areas 21 distributed at different positions, that is, a plurality of light-gathering areas 21 are formed, and the plurality of light-gathering areas 21 are combined into a middle three-dimensional light-gathering field. Specifically, the direct light 7 emitted from a first strip-shaped light emitting element 3 and the direct light 7 emitted from another one or more strip-shaped light emitting elements 3 are converged to form a first light converging region 21, the direct light 7 emitted from a second strip-shaped light emitting element 3 and the direct light 7 emitted from another one or more strip-shaped light emitting elements 3 are converged to form a second light converging region 21, and so on, a plurality of light converging regions 21 are formed, and the light converging regions 21 are distributed at different positions and combined together to form a central three-dimensional light converging field.

In the side light-emitting section, the light convergence positions of the plurality of strip-shaped light-emitting assemblies 3 are a plurality of light-gathering areas 21 distributed at different positions, that is, a plurality of light-gathering areas 21 are formed, and the plurality of light-gathering areas 21 are combined into a side three-dimensional light-gathering field. Specifically, the direct light 7 emitted from a first strip-shaped light emitting element 3 and the direct light 7 emitted from another one or more strip-shaped light emitting elements 3 are converged to form a first light converging region 21, the direct light 7 emitted from a second strip-shaped light emitting element 3 and the direct light 7 emitted from another one or more strip-shaped light emitting elements 3 are converged to form a second light converging region 21, and so on, a plurality of light converging regions 21 are formed, and the light converging regions 21 are distributed at different positions and combined together to form a side stereoscopic light converging field.

It should be noted that, in the present embodiment, the three-dimensional light collecting field is relative to the planar light field, in the middle three-dimensional light collecting field and the lateral three-dimensional light collecting field, there are a plurality of light collecting areas 21 distributed at different positions, respectively, and a virtual surface formed at an isocandela position in the light field is a three-dimensional surface that is not on the plane, so that a corresponding middle three-dimensional light collecting field and a lateral three-dimensional light collecting field are formed.

In the prior art, light emitted by a condensing light source is converged in a central point region or a central line region, and the total area of the condensing region 21 is small, so that the brightness of a certain region is very high, and the brightness of other regions is insufficient, so that the brightness change is large, and the high-quality visual detection of products with large areas is difficult to use. In the embodiment, the light fields formed by the middle light-emitting section and the side light-emitting sections are three-dimensional light-gathering fields formed by the plurality of light-gathering regions 21, the total area of the light-gathering regions 21 is larger, the brightness of the detection region can be remarkably improved, and light can be gathered to the detection region with a larger area, so that the light-gathering light-detecting device is suitable for high-precision detection of a small area and high-precision detection of a large area.

In addition, the light generated by the light-gathering light source in the prior art is mainly direct light 7, a plurality of light beams are gathered in a central point area or a central line area, in the non-light-gathering area 21, the light intensity at the gap between the light beams is far smaller than the light intensity on the light beam path, namely, in the normal plane perpendicular to the light beam propagation direction, the light intensity has large variation gradient, so that light spots and shadows are easily generated, and the image reality degree acquired by the camera is reduced. The light generated by prior art non-condensing light sources is primarily diffuse light, either with insufficient brightness or requiring high power. In the present embodiment, the light-gathering regions 21 distributed at a plurality of positions are provided, so that the gradient of the light intensity variation in the region close to the detected object can be reduced to some extent, and the occurrence of light spots and shadows can be reduced. In addition, in the present embodiment, the bar-shaped light emitting element 3 also emits diffused light, so that the diffused light and the direct light 7 are simultaneously provided on the light receiving surfaces in the middle three-dimensional light gathering field and the side three-dimensional light gathering field, and the light intensity variation gradient between the light beams can be further reduced. Therefore, the method is suitable for bright field detection and dark field detection, so that the light irradiation with enough brightness is performed on a plurality of surfaces or non-planar appearances of the detected workpiece, and further, more types of surface detection such as length, width, height, scars, pollutants, flatness and the like can be realized by fewer detection tables.

In the present embodiment, in the side light-emitting section, one end of the plurality of bar-shaped light-emitting assemblies 3 away from the middle light-emitting section is inclined downward, so that at least a part of the side stereoscopic light-gathering field is overlapped with the middle stereoscopic light-gathering field. Illustratively, when the front side and the rear side of the middle light-emitting section are respectively provided with a side three-dimensional light-gathering field, at least one part of the side three-dimensional light-gathering field is overlapped with the middle three-dimensional light-gathering field, so that the length and the area of a total light-receiving area can be increased, the middle three-dimensional light-gathering field is enhanced, the light beam density and the light-receiving area of the overlapped area are improved, the light intensity change gradient between light beams is further reduced, and the light source is more suitable for bright field detection and dark field detection.

In this embodiment, the stripe-shaped light emitting element 3 emits diffused light and direct light 7, and each point on the central light receiving surface and the side light receiving surface is formed by overlapping the diffused light and the direct light 7. In the bar-shaped light emitting module 3, the light emitted through the bar-shaped condensing lens 35 is mainly direct light 7, and the light emitted through the grating holes of the plate body is mainly diffused light.

In this embodiment, image acquisition device 4 sets up in the top of modularization spotlight type light source, is provided with baffle 2 between image acquisition device 4 and the modularization spotlight type light source, and baffle 2 has bar through-hole 8 in the region that corresponds with middle part light-emitting section, and a plurality of bar light-emitting component 3 in the light-emitting section of middle part distribute in the both sides of bar through-hole 8.

As shown in fig. 10, the image capturing device 4 is of a type including a linear image capturing camera, the linear image capturing camera faces the strip-shaped through hole 8, and an image scanning direction of the linear image capturing camera is linear and substantially perpendicular to a moving direction of the detected object.

In the embodiment, the bottom frame is disposed at the bottom of the housing 1, and exposes the light-emitting region of the modular condensing light source and covers the non-light-emitting region. Specifically, as shown in fig. 2, the bottom frame is a plate structure, the central opening of the bottom frame exposes the light-emitting area of the modular light-concentrating light source, and the plate on the periphery of the opening blocks light to form a non-light-emitting area.

In a specific embodiment, the number of the side light-emitting segments is two, namely, a left side light-emitting segment and a right side light-emitting segment, and the left side light-emitting segment and the right side light-emitting segment are distributed on two sides of the middle light-emitting segment.

In a specific embodiment, the modular spotlight type light source further comprises a light source bracket assembly installed in the housing 1, and the bar-shaped light emitting assemblies 3 in the middle lighting section and the bar-shaped light emitting assemblies 3 in the side lighting sections are detachably installed on the light source bracket assembly, respectively.

In a specific embodiment, each strip-shaped light emitting assembly 3 includes a light bar 34, the light bar 34 has a strip-shaped structure, and a plurality of LED beads 341 are arrayed on the front surface of the light bar 34.

The heat dissipation device 32 is disposed on the back of the light bar 34, the heat dissipation device 32 includes a heat conductive substrate 321 and a plurality of heat dissipation fins 322, the heat conductive substrate 321 is connected to the back of the light bar 34, the plurality of heat dissipation fins 322 are connected to the heat conductive substrate 321, and gaps are formed between the plurality of heat dissipation fins 322.

In a specific embodiment, the strip-shaped light-emitting assembly 3 further comprises a clamping plate assembly 31, the clamping plate assembly 31 comprises a plurality of plate bodies, a clamping space for mounting the light bar 34 is formed among the plurality of plate bodies, and a part of the plurality of plate bodies is provided with a mounting structure for mounting the light bar 34;

the plurality of plate bodies extend to the peripheral area in front of the light bar 34 and form a light outlet right in front of the light bar 34;

preferably, a plurality of grid holes 33 are formed on the plate body extending to the peripheral area in front of the light bar 34;

preferably, the strip-shaped light emitting assembly 3 further comprises a strip-shaped condensing lens 35 located right in front of the light bar 34, and the strip-shaped condensing lens 35 is fixed on a part of the plate body.

In a specific embodiment, the light source bracket assembly comprises a hanging frame and arc-shaped base plates, and in the middle light-emitting section, each strip-shaped light-emitting assembly 3 is detachably arranged between the two arc-shaped base plates at intervals; in the side light-emitting section, the strip-shaped light-emitting assembly 3 is detachably mounted at intervals on one side of an arc-shaped substrate facing away from the strip-shaped light-emitting assembly 3.

In a specific embodiment, the integrated control system further comprises a power module, a driving circuit, an information processing circuit and a communication circuit which are distributed on the plurality of PCB boards, the information processing circuit receives a control signal of the upper computer through the communication circuit, and the information processing circuit synchronously controls the image acquisition device 4 and the modular light-gathering light source according to the control signal of the upper computer.

In this embodiment, the image capturing device 4 is mounted in the housing 1 via a multi-stage adjustable platform. As shown in fig. 11-15, the multi-stage adjustable platform includes a first rotating platform 13, a second rotating platform 11, and an XY-axis double-layer angular displacement platform 10, a fixing portion of the second rotating platform 11 is fixedly connected to the housing 1, a rotation surface of a rotation portion of the second rotating platform 11 is perpendicular to a horizontal plane, a bottom of the XY-axis double-layer angular displacement platform 10 is connected to the rotation portion of the second rotating platform 11 through a second adapter, a fixing portion of the first rotating platform 13 is connected to a top of the XY-axis double-layer angular displacement platform 10, the rotation surface of the rotation portion of the first rotating platform 13 is the horizontal plane, and the rotation portion of the first rotating platform 13 is connected to the image capturing device 4 through a first adapter 9.

The first rotating platform 13 and the second rotating platform 11 may have a common structure, and for example, the second rotating platform 11 includes a base 1103, a rotating ring 1102, a rotating platform 1101, an adjusting screw 1105, a differential adjusting head 1106, and a locking device 1104, where the base 1103 is vertically connected to the housing 1, the adjusting screw 1105 is connected to the rotating ring 1102, the rotating ring 1102 is located between the base 1103 and the rotating platform 1101, the rotating platform 1101 is connected to the rotating ring 1102, so that the rotating platform 1101 is driven by the rotating ring 1102 to rotate when the adjusting screw 1105 rotates, and the rotating platform 1101 is configured to be connected to the second adaptor rack. One side of the adjusting screw 1105 is connected with a differential adjusting head 1106, and the other side is connected with a locking device 1104. When the rotary table is used, the adjusting screw is used for rotationally adjusting the rotary ring, so that the rotary table is driven to rotate to form coarse rotational adjustment, and fine rotational adjustment is performed through the differential adjusting head. Preferably, a scale is arranged between the rotating table and the base. The locking device 1104 can be a locking rod, the locking rod is in threaded fit with the base, and the locking rod abuts against or loosens the adjusting screw when rotating.

As shown in fig. 13, the first rotary table 13 is taken as an example, and includes a base, a rotary ring, a rotary table, an adjusting screw, a differential adjusting head, and a locking device. The base is connected with the top of an XY-axis double-layer angular displacement platform 10, the rotating platform is connected with a first adapter 9, and the first adapter 9 is connected with the image acquisition device 4.

As shown in fig. 11, the XY-axis double-layer angular displacement platform 10 includes an upper angular displacement platform 101 and a lower angular displacement platform 102 stacked up and down, and an angular displacement adjustment direction of the upper angular displacement platform 101 is perpendicular to an angular displacement adjustment direction of the lower angular displacement platform 102, so as to form an XY-axis multi-dimensional angular adjustment mechanism. Exemplarily, the upper-layer angular displacement platform 101 is exemplified by including a base and a movable table, the movable table is slidably disposed on the base, a fitting surface between the base and the movable table is an arc-shaped fitting surface 108, the base is provided with a differential adjusting head 104, the movable table is provided with a stopper 103, the differential adjusting head 104 approaches and abuts against the stopper 103 during rotation, the movable table slides relative to the base by pushing the stopper 103, and an angular position of the movable table is precisely adjusted during sliding because the fitting surface between the base and the movable table is the arc-shaped fitting surface 108. Preferably, the upper angular displacement platform 101 further comprises a locking device for locking the movable table and the base.

Illustratively, as shown in fig. 12, the lower-level angular displacement platform 102 is exemplified by a base 1022, a movable table 1021 and a locking device 107, wherein the movable table 1021 is slidably disposed on the base 1022, a mating surface between the base 1022 and the movable table 1021 is an arc-shaped mating surface 108, the base 1022 is provided with a differential adjusting head 106, the movable table 1021 is provided with a stopper 105, the differential adjusting head 106 approaches and abuts against the stopper 105 during rotation, the movable table 1021 slides relative to the base 1022 by pushing the stopper 105, and an angular position of the movable table 1021 during sliding is precisely adjusted due to the arc-shaped mating surface 108 between the base 1022 and the movable table 1021. Wherein, the sliding direction of the movable table in the upper angular displacement platform 101 is perpendicular to the sliding direction of the movable table 1021 in the lower angular displacement platform 102. The locking device 107 may be a locking screw, a seat body is disposed on the base 1022, a slot 109 is disposed on the seat body, and the locking device 107 is disposed in the slot 109 to tightly abut against the movable table 1021.

In this embodiment, image acquisition device 4 and modularization spotlight type light source set up in dustcoat 1, have formed the integration module structure, not only can improve equipment's installation effectiveness, reduce the debugging, reduce the fault rate, can also reduce interference to visual detection system such as external light, facility, help promoting image acquisition quality. Moreover, the modularization spotlight type light source includes a plurality of bar light emitting component 3, light emitting component's direction uniformity is better, the photic area is bigger, the operator no longer need install single lamp pearl 341 one by one when setting up the light source, once adjust lamp strip 34 can make the azimuth angle of a plurality of LED lamp pearls 341 on lamp strip 34 all adjusted, also need not carry out the one-to-one adjustment to the angle of every lamp pearl 341 in order to realize spotlight effect, the installation effectiveness of equipment has further been promoted, and equipment flexibility is better, partial lamp pearl 341 damages and can not lead to whole light source performance to show the reduction, each module is easily dismantled and assembled the adjustment, the change of both being convenient for, also make the product can adjust quantity according to target parameter rapidly, the angle.

In addition, the brightness of the detection area can be remarkably improved, and light can be converged into the detection area with a larger area, so that the method is suitable for high-precision detection with a small area and also suitable for high-precision detection with a large area. And the device is suitable for bright field detection and dark field detection, so that the light irradiation with enough brightness is performed on a plurality of surfaces or non-planar surfaces of the detected workpiece, and further, more types of surface detection such as length, width, height, scars, pollutants, flatness and the like can be realized by fewer detection tables.

Example 2

The present embodiment provides an integrated visual detection module for a moving object, as shown in fig. 16 and 17, compared with embodiment 1, the main differences of the present embodiment are as follows:

in this embodiment, the frame includes a plurality of vertical frames 23 and a plurality of horizontal frames 24, and the image capturing device 4 and the modular light-condensing type light source are mounted on the horizontal frames and/or the vertical frames.

In this embodiment, the strip-shaped light emitting assembly 3 does not include the clamping plate assembly 31, but further includes a supporting side plate on which the light bar 34 and the condensing lens are respectively mounted.

In this embodiment, the multi-stage adjustable platform includes a first rotating platform 13 and an XY-axis double-layer angular displacement platform 10, a rotating portion of the first rotating platform 13 is connected to the image acquisition device 4 through a first adapter 9, a fixing portion of the first rotating platform 13 is connected to a top of the XY-axis double-layer angular displacement platform 10, a rotating surface of the rotating portion of the first rotating platform 9 is a horizontal surface, and a bottom of the XY-axis double-layer angular displacement platform 10 is connected to the frame through a second adapter 22.

Other features in this embodiment are the same as those in embodiment 1, and are not described again.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred implementation scenario and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the implementation scenario may be distributed in the devices in the implementation scenario according to the description of the implementation scenario, or may be located in one or more devices different from the present implementation scenario with corresponding changes. The modules of the implementation scenario may be combined into one module, or may be further split into a plurality of sub-modules.

The sequence numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the implementation scenario.

The above disclosure is only a few specific implementation scenarios of the present invention, however, the present invention is not limited thereto, and any changes that can be considered by those skilled in the art shall fall within the protection scope of the present invention.

Claims (16)

1. An integrated visual detection module for a moving object is characterized by comprising a rack, an image acquisition device and a modularized light-gathering type light source, wherein the image acquisition device and the modularized light-gathering type light source are arranged on the rack; the modularized light-gathering type light source comprises a plurality of strip-shaped light-emitting assemblies, wherein the strip-shaped light-emitting assemblies emit diffused light and direct light, the length directions of the strip-shaped light-emitting assemblies face the movement direction of an object to be detected, the strip-shaped light-emitting assemblies are arranged in groups to form a middle light-emitting section and at least one side light-emitting section, and the side light-emitting sections are positioned beside the middle light-emitting section;

in the middle light-emitting section, a plurality of strip-shaped light-emitting assemblies are arranged at intervals around the movement direction of the detected object, the middle light-emitting section is in an arc shape, the convergence positions of direct light of the strip-shaped light-emitting assemblies are multiple to form a plurality of light-gathering areas, and the light-gathering areas and diffused light are overlapped to form a middle three-dimensional light-gathering field;

in the side light-emitting section, a plurality of strip-shaped light-emitting assemblies are arranged at intervals around the movement direction of an object to be detected, so that the side light-emitting section is in an arc shape, the convergence positions of direct light of the strip-shaped light-emitting assemblies are multiple to form a plurality of light-gathering areas, the light-gathering areas and diffused light are overlapped to form a side three-dimensional light-gathering field together, one end, far away from the middle light-emitting section, of each strip-shaped light-emitting assembly is inclined downwards, and at least one part of the side three-dimensional light-gathering field is overlapped with the middle three-dimensional light-gathering.

2. The integrated visual inspection module for moving objects of claim 1, wherein in the middle light-emitting section, the direct light emitted from a first strip-shaped light-emitting component and the direct light emitted from another one or more strip-shaped light-emitting components are converged to form a first light-converging region, the direct light emitted from a second strip-shaped light-emitting component and the direct light emitted from another one or more strip-shaped light-emitting components are converged to form a second light-converging region, and so on, a plurality of light-converging regions are formed, and the light-converging regions are distributed at different positions and overlapped with the diffused light to form a middle three-dimensional light-converging field;

and/or in the side light-emitting section, the direct light emitted from a first strip-shaped light-emitting component and the direct light emitted from more than one other strip-shaped light-emitting component are converged to form a first light-gathering area, the direct light emitted from a second strip-shaped light-emitting component and the direct light emitted from more than one other strip-shaped light-emitting component are converged to form a second light-gathering area, and the like, a plurality of light-gathering areas are formed, are distributed at different positions and are overlapped with the diffused light to form a side stereoscopic light-gathering area.

3. The integrated visual inspection module for moving objects of claim 1, wherein the number of the side light-emitting segments is two, namely a left side light-emitting segment and a right side light-emitting segment, and the left side light-emitting segment and the right side light-emitting segment are distributed on two sides of the middle light-emitting segment.

4. The integrated visual inspection module for moving objects of claim 1, wherein the image capturing device is disposed above the light-gathering modular light source, a strip-shaped gap is formed between two strip-shaped light emitting components at the center of the top of the middle light emitting section, and the other strip-shaped light emitting components of the middle light emitting section are distributed at two sides of the strip-shaped gap;

the image acquisition device comprises a linear image acquisition camera, the linear image acquisition camera is over against the strip-shaped gap, and the image scanning direction of the linear image acquisition camera is linear and is basically vertical to the movement direction of the detected object.

5. The integrated visual inspection module for moving objects of claim 4, wherein:

a partition plate is arranged between the image acquisition device and the modularized light-gathering type light source, a strip-shaped through hole is formed in the area, right opposite to the strip-shaped gap, of the partition plate, and the linear image acquisition camera is right opposite to the strip-shaped through hole.

6. The integrated visual inspection module for moving objects of claim 4, wherein:

the bottom frame is arranged at the bottom of the rack, and the bottom frame exposes the light emitting area of the modularized condensing light source and covers the non-light emitting area.

7. The integrated vision inspection module for moving objects of claim 1, wherein the light-concentrating modular light source further comprises a light source bracket assembly, the light source bracket assembly is mounted on the frame, and the strip-shaped light emitting assembly in the middle light-emitting section and the strip-shaped light emitting assembly in the side light-emitting section are respectively detachably mounted on the light source bracket assembly.

8. The integrated visual inspection module for moving objects of claim 7, wherein:

the frame is provided with an integrated circuit interface assembly, one end interface of the integrated circuit interface assembly is a quick-insertion interface exposed out of the frame, and the other end interface is provided with a plurality of wiring units and is respectively connected with corresponding strip-shaped light-emitting assemblies.

9. The integrated visual detection module for the moving object according to claim 1, wherein each strip-shaped light emitting component comprises a light bar, the light bar is of a strip-shaped structure, and a plurality of LED lamp beads are arrayed on the front surface of the light bar;

the back of the light bar is provided with a heat dissipation device, the heat dissipation device comprises a heat conduction substrate and a plurality of heat dissipation fins, the heat conduction substrate is connected with the back of the light bar, the heat dissipation fins are connected with the heat conduction substrate, and gaps are formed among the heat dissipation fins;

the bar-shaped light emitting assembly further comprises a bar-shaped condensing lens located in front of the light bar.

10. The integrated vision inspection module for moving objects of claim 9, wherein the bar-shaped light emitting assembly further comprises a clamping plate assembly, the clamping plate assembly comprises a plurality of plate bodies, a clamping space for mounting the light bar is formed among the plurality of plate bodies, a mounting structure for mounting the light bar is arranged on one part of the plurality of plate bodies, the plurality of plate bodies extend to the peripheral area in front of the light bar, a light outlet is formed right in front of the light bar, and the bar-shaped condensing lens is fixed on one part of the plate bodies.

11. The integrated visual inspection module for moving objects of claim 10, wherein:

a plurality of grid holes are formed in the plate body extending to the peripheral area in front of the light bar;

or, the strip-shaped light-emitting component further comprises a supporting side plate, and the light bar and the condensing lens are respectively arranged on the supporting side plate.

12. The integrated vision inspection module for moving objects of claim 7, wherein the light source bracket assembly comprises a hanger and arc-shaped substrates, and each strip-shaped light emitting assembly is detachably mounted between the two arc-shaped substrates at intervals in the middle light emitting section; and in the side light-emitting section, strip-shaped light-emitting assemblies are detachably mounted on one side of the arc-shaped substrate, which is far away from the strip-shaped light-emitting assemblies, at intervals.

13. The integrated vision inspection module for moving objects of claim 1, wherein the image capturing device is mounted on the frame by a multi-stage adjustable platform.

14. The integrated visual inspection module for moving objects of claim 13, wherein:

the multistage adjustable platform comprises a first rotating platform, a second rotating platform and an XY-axis double-layer angular displacement platform, wherein the rotating part of the first rotating platform is connected with the image acquisition device through a first switching frame, the fixing part of the first rotating platform is connected with the top of the XY-axis double-layer angular displacement platform, the rotating surface of the rotating part of the first rotating platform is a horizontal plane, the fixing part of the second rotating platform is fixedly connected with the rack, the rotating surface of the rotating part of the second rotating platform is perpendicular to the horizontal plane, and the bottom of the XY-axis double-layer angular displacement platform is connected with the rotating part of the second rotating platform through a second switching frame.

15. The integrated visual inspection module for moving objects of claim 13, wherein:

the multistage adjustable platform comprises a first rotating platform and an XY-axis double-layer angular displacement platform, the rotating part of the first rotating platform is connected with the image acquisition device through a first switching frame, the fixing part of the first rotating platform is connected with the top of the XY-axis double-layer angular displacement platform, the rotating surface of the rotating part of the first rotating platform is a horizontal plane, and the bottom of the XY-axis double-layer angular displacement platform is connected with the rack through a second switching frame.

16. The integrated visual inspection module for moving objects of any one of claims 1-15, further comprising an integrated control system, wherein the integrated control system comprises a power module, a driving circuit, an information processing circuit and a communication circuit, the power module, the driving circuit, the information processing circuit and the communication circuit are distributed on a plurality of PCB boards, the information processing circuit receives a control signal of an upper computer through the communication circuit, and the information processing circuit synchronously controls the image acquisition device and the modularized light-gathering type light source according to the control signal of the upper computer.

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