CN115236097A - Detection device and detection method - Google Patents

Detection device and detection method Download PDF

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Publication number
CN115236097A
CN115236097A CN202210934792.4A CN202210934792A CN115236097A CN 115236097 A CN115236097 A CN 115236097A CN 202210934792 A CN202210934792 A CN 202210934792A CN 115236097 A CN115236097 A CN 115236097A
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Prior art keywords
light source
circuit board
detection
board
image
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CN202210934792.4A
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Chinese (zh)
Inventor
谢祥龙
陈光达
丁有爽
邵天兰
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Mech Mind Robotics Technologies Co Ltd
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Mech Mind Robotics Technologies Co Ltd
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Priority to CN202210934792.4A priority Critical patent/CN115236097A/en
Publication of CN115236097A publication Critical patent/CN115236097A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/01—Arrangements or apparatus for facilitating the optical investigation
    • G01N2021/0106—General arrangement of respective parts
    • G01N2021/0112—Apparatus in one mechanical, optical or electronic block
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects
    • G01N2021/95638—Inspecting patterns on the surface of objects for PCB's
    • G01N2021/95646—Soldering

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Abstract

The invention provides a detection device and a detection method, and relates to the field of circuit board detection. The detection device comprises an installation frame, a conveying mechanism and image acquisition equipment; the conveying mechanism and the image acquisition equipment are both arranged on the mounting frame; the image acquisition equipment is positioned on two opposite sides of the conveying mechanism and faces the conveying mechanism; the detection station is arranged in the conveying direction of the conveying mechanism, the conveying mechanism is used for conveying the circuit board to the detection station, and the image acquisition equipment is used for acquiring a board surface image and a board bottom image of the circuit board when the circuit board is positioned at the detection station; the detection station comprises a first surface and a second surface, the first surface is used for corresponding to the surface of the circuit board, and the second surface is used for corresponding to the bottom of the circuit board. The detection device utilizes the image acquisition equipment to acquire the board image and the board bottom image of the circuit board, so that the circuit board is analyzed and detected according to the board image and the board bottom image of the circuit board, thereby not only being beneficial to improving the detection efficiency, but also being beneficial to saving the labor cost and avoiding missing detection.

Description

Detection device and detection method
Technical Field
The invention relates to the technical field of circuit board detection, in particular to a detection device and a detection method.
Background
Printed Circuit Boards (PCBs) are one of the important components in the electronics industry. Almost every kind of electronic equipment, as small as electronic watches, calculators, as large as computers, air conditioners, refrigerators, washing machines, etc., uses printed circuit boards as long as there are electronic components such as integrated circuits.
In order to ensure the quality of the printed circuit board, the printed circuit board needs to be inspected after being manufactured. Taking a printed circuit board of an air conditioner as an example, at present, after the printed circuit board of the air conditioner is manufactured, wrong parts, missing parts, reverse parts and floating heights of a board surface, and missing welding, continuous welding and protruding feet of a board bottom need to be detected, and in related technologies, the detection is finished by manual visual inspection.
However, manual visual inspection of printed circuit boards is inefficient.
Disclosure of Invention
In order to solve the problems mentioned in the background art, the invention provides a detection device and a detection method, wherein the detection device utilizes image acquisition equipment to acquire a board surface image and a board bottom image of a circuit board so as to analyze and detect the circuit board according to the board surface image and the board bottom image of the circuit board, thereby being beneficial to improving the detection efficiency, saving the labor cost and avoiding missing detection.
In order to achieve the above purpose, the invention provides the following technical scheme:
in a first aspect, the present invention provides a detection apparatus, including a mounting frame, a conveying mechanism and an image acquisition device; the conveying mechanism and the image acquisition equipment are both arranged on the mounting frame; the image acquisition equipment is positioned on two opposite sides of the conveying mechanism and faces the conveying mechanism; a detection station is arranged in the conveying direction of the conveying mechanism, the conveying mechanism is used for conveying a circuit board to the detection station, and the image acquisition equipment is used for acquiring a board surface image and a board bottom image of the circuit board when the circuit board is positioned at the detection station; the detection station comprises a first surface and a second surface, the first surface is used for corresponding to the board surface of the circuit board, and the second surface is used for corresponding to the board bottom of the circuit board.
In a possible implementation manner of the detection device, the detection device further includes a plate bottom light source, the plate bottom light source is located on one side where the second surface is located, and the plate bottom light source includes a first annular light source; the distance between the first annular light source and the second face ranges from 10mm to 50mm; the first annular light source is used for emitting low-angle annular light towards the detection station.
In a possible implementation manner of the detection device, the light emitting color of the first annular light source is red light or blue light.
In a possible implementation manner of the detection apparatus, the first ring-shaped light source is movably mounted on the mounting frame, so that a distance between the first ring-shaped light source and the second surface is adjustable.
In a possible implementation manner of the detection apparatus, a first included angle is formed between the light emitted by the first annular light source and the second surface, and an angle range of the first included angle is 10 degrees to 50 degrees.
In a possible implementation manner of the detection device, the plate bottom light source further comprises a second annular light source, and the second annular light source is located on one side, away from the detection station, of the first annular light source; the light emitting color of the second annular light source is red light or blue light, and the light emitting color of the second annular light source is different from the light emitting color of the first annular light source.
In a possible implementation of the detection device, the radial dimension of the second annular light source is smaller than the radial dimension of the first annular light source.
In one possible implementation of the detection apparatus, a spacing between the second annular light source and the second face ranges from 100mm to 600mm.
In a possible implementation manner of the detection apparatus, the second annular light source is movably mounted on the mounting frame, so that a distance between the second annular light source and the second face is adjustable.
In a possible implementation manner of the detection apparatus, a second included angle is formed between the light emitted by the second annular light source and the second surface, and an angle range of the second included angle is 60 degrees to 90 degrees.
In a possible implementation manner of the detection apparatus, the first annular light source includes four first bar-shaped light sources, and the four first bar-shaped light sources surround the first annular light source; the four first strip-shaped light sources move along the direction parallel to the second surface so as to enlarge or reduce the area enclosed by the first annular light sources.
In a possible implementation manner of the detection apparatus, the second annular light source includes four second bar-shaped light sources, and the four second bar-shaped light sources surround the second annular light source; the four second strip-shaped light sources move along the direction parallel to the second face so as to enlarge or reduce the area enclosed by the second annular light source.
In a possible implementation manner of the detection device, the detection device further comprises a panel light source, the panel light source is located on one side where the first panel is located, and the panel light source comprises a third annular light source; the light emitting color of the third annular light source is white; the third annular light source is spaced from the first face by a distance in the range of 400mm to 700mm.
In a possible implementation manner of the detection apparatus, the third annular light source is movably mounted on the mounting frame, so that a distance between the third annular light source and the first surface is adjustable.
In a possible implementation manner of the detection apparatus, the third annular light source includes four third strip-shaped light sources, and the four third strip-shaped light sources surround the third annular light source; the four third strip-shaped light sources move along the direction parallel to the first surface so as to enlarge or reduce the area enclosed by the third annular light sources.
In a possible implementation manner of the detection device, the plate bottom light source and the plate surface light source are correspondingly arranged on two opposite sides of the detection station; the image acquisition equipment is correspondingly arranged on two opposite sides of the detection station.
In a possible implementation manner of the detection device, the plate bottom light source and the plate surface light source are correspondingly arranged on two opposite sides of the detection station; and a shading structure is arranged in an area, which is not shaded by the circuit board positioned in the detection station, of the detection station, and the shading structure is used for preventing the board bottom light source and the board surface light source from interfering with each other.
In one possible implementation manner of the detection device, at least two detection stations are arranged in the conveying direction of the conveying mechanism; one side, facing the first surface, of one of the two adjacent detection stations is correspondingly provided with the plate surface light source and the image acquisition equipment; and one side of the other detection station of the two adjacent detection stations, which faces the second surface, is correspondingly provided with the plate bottom light source and the image acquisition equipment.
In a possible implementation manner of the detection apparatus, the conveying mechanism is provided with a detection area avoiding structure, and the detection area avoiding structure is configured to enable the image acquisition device to capture a board surface image and/or a board bottom image of the circuit board when the circuit board is located at the detection station.
In a second aspect, the present invention provides a detection method applied to the detection apparatus as described in any one of the above, the detection method comprising: controlling a conveying mechanism to convey the circuit board to a detection station; and controlling an image acquisition device to acquire the plate surface image and/or the plate bottom image of the circuit board.
In a possible implementation manner of the detection method, before the controlling the image capturing device to capture the board bottom image of the circuit board, the method further includes: and controlling the board bottom light source to polish the board bottom of the circuit board.
In a possible implementation manner of the detection method, before the controlling the image capturing device to capture the board surface image of the circuit board, the method further includes: and the surface light source of the control plate polishes the surface of the circuit board.
The detection device and the detection method provided by the invention have the following advantages:
the detection device provided by the invention comprises a mounting frame, a conveying mechanism and image acquisition equipment. Through all setting up conveying mechanism and image acquisition equipment on the installation frame to not only make the installation frame can play the effect of location and support conveying mechanism and image acquisition equipment, make the installation frame can play the effect of integration and protection to conveying mechanism and image acquisition equipment moreover, and then be convenient for detection device's independent use or combined use, improve the flexibility that detection device used.
Meanwhile, a detection station is arranged in the conveying direction of the conveying mechanism, so that the conveying mechanism is used for conveying the circuit board to the detection station; through setting up the relative two sides that image acquisition equipment is located conveying mechanism to towards conveying mechanism, make image acquisition equipment be used for when the circuit board is located the detection station the face image and the board end image of gathering the circuit board, thereby be convenient for according to the face image and the board end image analysis circuit board of the circuit board of image acquisition equipment collection, with the purpose of realizing detecting circuit board. Compared with manual visual inspection of the circuit board, the detection device provided by the invention is not only beneficial to improving the detection efficiency, but also beneficial to saving the labor cost, and is also beneficial to avoiding missing inspection.
The detection method provided by the invention is applied to the detection device, so that the detection method is not only beneficial to improving the detection efficiency, but also beneficial to saving the labor cost, and is beneficial to avoiding missing detection.
In addition to the technical problems solved by the embodiments of the present invention, the technical features constituting the technical solutions, and the advantages brought by the technical features of the technical solutions described above, other technical problems that can be solved by the detection apparatus and the detection method provided by the present invention, other technical features included in the technical solutions, and advantages brought by the technical features will be further described in detail in the detailed description of the embodiments.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.
Fig. 1 is a first schematic structural diagram of a detection apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second exemplary embodiment of a detection apparatus;
FIG. 3 is a schematic structural diagram III of a detection apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a detection apparatus provided in the embodiment of the present invention.
Description of reference numerals:
100-a mounting frame; 200-a conveying mechanism; 210-detecting a zone avoidance structure; 300-an image acquisition device; 400-plate bottom light source; 410-a first ring light source; 420-a second annular light source; 500-plate surface light source; 600-a housing; 610-avoiding the opening; 700-an analytics computing device; 800-indicator light.
Detailed Description
In the related art, the panel surface and the panel bottom of the circuit board of the air conditioner are detected through manual visual inspection, however, the manual visual inspection of the circuit board is low in efficiency, high in labor cost and prone to missing inspection.
In order to solve the above technical problem, an embodiment of the present invention provides a detection apparatus. The detection device comprises a mounting frame, a conveying mechanism and an image acquisition device. Through all setting up conveying mechanism and image acquisition equipment on the installation frame to not only make the installation frame can play the effect of location and support conveying mechanism and image acquisition equipment, make the installation frame can play the effect of integration and protection to conveying mechanism and image acquisition equipment moreover, and then be convenient for detection device's independent use or combined use, improve the flexibility that detection device used.
Meanwhile, a detection station is arranged in the conveying direction of the conveying mechanism, so that the conveying mechanism is used for conveying the circuit board to the detection station; through setting up the relative two sides that image acquisition equipment is located conveying mechanism to towards conveying mechanism, make image acquisition equipment be used for when the circuit board is located the detection station the face image and the board end image of gathering the circuit board, thereby be convenient for according to the face image and the board end image analysis circuit board of the circuit board of image acquisition equipment collection, with the purpose of realizing detecting circuit board. Compared with manual visual inspection of the circuit board, the detection device provided by the embodiment of the invention is not only beneficial to improving the detection efficiency, but also beneficial to saving the labor cost, and is also beneficial to avoiding missing inspection.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a first schematic structural diagram of a detection apparatus according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a second exemplary embodiment of a detection apparatus; FIG. 3 is a schematic structural diagram III of a detection apparatus according to an embodiment of the present invention; fig. 4 is a schematic structural diagram of a detection apparatus provided in the embodiment of the present invention.
Referring to fig. 1 to 4, an embodiment of the present invention provides a detection apparatus, which is applied to detect a board surface and a board bottom of a circuit board, so as to avoid the phenomena of wrong components, missing components, reverse components and floating height on the board surface of the circuit board, and avoid the phenomena of missing soldering, continuous soldering and protruding feet on the board bottom of the circuit board. The circuit board includes, but is not limited to, a circuit board of an air conditioner.
The detection device provided by the embodiment of the invention comprises a mounting frame 100, a conveying mechanism 200 and an image acquisition device 300, wherein the conveying mechanism 200 and the image acquisition device 300 are arranged on the mounting frame 100. Illustratively, the mounting frame 100 includes at least a quadrangular bottom frame, a quadrangular top frame, and four pillars correspondingly connecting four corners of the bottom frame and four corners of the top frame. The conveying mechanism 200 may be mounted on the mounting frame 100 by means of screw connection, snap connection, welding, or the like; the image capture device 300 may be mounted on the mounting frame 100 by a threaded connection, a snap-fit connection, or welding, for example. The image capture device 300 includes a camera, such as an area-array camera or a 3D camera.
In one aspect, the mounting frame 100 may serve as a location and support for the transport mechanism 200 and the image capture device 300; on the other hand, the mounting frame 100 may integrate and protect the conveying mechanism 200 and the image capturing apparatus 300, thereby facilitating not only independent use of a single detection device, but also combined use of a plurality of detection devices, so as to improve flexibility of application of the detection devices.
The conveying direction of the conveying mechanism 200 is provided with a detection station, and the conveying mechanism 200 is used for conveying the circuit board to the detection station. The image acquisition devices 300 are located on two opposite sides of the conveying mechanism 200 and face the conveying mechanism 200, and the image acquisition devices 300 are used for acquiring a board surface image and a board bottom image of the circuit board when the circuit board is located at the detection station. Therefore, the board surface and the board bottom of the circuit board can be analyzed conveniently according to the board surface image and the board bottom image of the circuit board acquired by the image acquisition equipment 300, and the purpose of detecting the circuit board is achieved.
In an application scenario, first, the conveying mechanism 200 may convey a circuit board to be detected into a detection station; then, the image collecting device 300 may collect a board surface image and/or a board bottom image of the circuit board located in the detection station; finally, the transport mechanism 200 may transport the circuit board away from the inspection station. Compared with manual visual inspection of the circuit board, the detection device provided by the embodiment of the invention has higher automation degree, is beneficial to improving the detection efficiency, is beneficial to saving the labor cost and is beneficial to avoiding missing inspection.
It is understood that the detection station may be an area located in the conveying direction of the conveying mechanism 200, and when the conveying mechanism 200 conveys the circuit board to the area, the image capturing apparatus 300 may better capture the board surface image and the board bottom image of the circuit board, so as to facilitate the subsequent analysis and processing to obtain a more accurate detection result.
The detection station comprises a first surface and a second surface, the first surface is used for corresponding to the surface of the circuit board, and the second surface is used for corresponding to the bottom of the circuit board. Wherein, first face and second face can be the virtual reference surface, and when conveying mechanism 200 carried the circuit board to the detection station, the face of circuit board can flush or coincide with first face, and the board end of circuit board can flush or coincide with the second face.
In one possible implementation, the conveying mechanism 200 extends in a horizontal direction, and the image capturing device 300 includes a first image capturing device disposed above the conveying mechanism 200 in a height direction of the detection device and a second image capturing device disposed below the conveying mechanism 200 in the height direction of the detection device. The number of the first image acquisition devices can be one, two or more, and the two or more first image acquisition devices can be arranged according to actual needs; the number of the second image acquisition devices can be one, two or more, and the two or more second image acquisition devices can be arranged according to actual needs.
The first surface of the detection station can be close to the first image acquisition equipment, the second surface of the detection station is close to the second image acquisition equipment, at the moment, the surface of the circuit board in the detection station faces the first image acquisition equipment, and the bottom of the circuit board faces the second image acquisition equipment; or the first surface of the detection station can be close to the second image acquisition equipment, the second surface is close to the first image acquisition equipment, at the moment, the surface of the circuit board located in the detection station faces the second image acquisition equipment, and the bottom of the circuit board faces the first image acquisition equipment.
In a possible implementation manner, the detection apparatus further includes a board bottom light source 400, and the board bottom light source 400 is located at a side where the second face is located. Wherein the plate bottom light source 400 comprises a first annular light source 410; the first annular light source 410 is spaced from the second surface by a distance in a range of 10mm to 50mm, and more preferably, the first annular light source 410 is spaced from the second surface by a distance in a range of 20mm to 40mm. Illustratively, the distance between the first annular light source 410 and the second surface may be set to be 10mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm or any value between 10mm and 50mm according to actual needs, so as to increase the flexibility of setting the first annular light source 410.
The first annular light source 410 is used to emit low angle annular light toward the inspection station. It is understood that when the circuit board is located in the inspection station, the first ring-shaped light source 410 can illuminate the solder joints of the board bottom of the circuit board from the circumferential side of the circuit board to make the image capturing device 300 located at the side where the second surface of the inspection station is located capture a relatively clear image of the board bottom of the circuit board.
In one possible implementation, the light emission color of the first annular light source 410 is red or blue.
In one possible implementation, the first ring light source 410 is movably mounted on the mounting frame 100 such that the spacing between the first ring light source 410 and the second face is adjustable. Illustratively, the first annular light source 410 may be installed on the installation frame 100 through a connector, and the connection position of the connector on the installation frame 100 may be adjusted along the height direction of the installation frame 100, so that the first annular light source 410 may be adjusted along the height direction of the installation frame 100, thereby achieving the purpose of adjusting the distance between the first annular light source 410 and the second surface, so as to improve the flexibility of the application of the detection apparatus.
In one possible implementation manner, the light emitted from the first annular light source 410 forms a first included angle with the second surface, and the angle of the first included angle ranges from 10 degrees to 50 degrees. For example, the first included angle may be set to be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, or any value between 10 degrees and 50 degrees according to actual needs, so as to be beneficial to ensuring the effect that the first annular light source illuminates the bottom of the circuit board in the detection station.
Optionally, the first annular light source 410 is movably mounted on the mounting frame 100 such that a first angle between the first annular light source 410 and the second face is adjustable.
In one possible implementation, the plate backlight 400 further includes a second annular light source 420, the second annular light source 420 being located on a side of the first annular light source 410 away from the inspection station. The light emitting color of the second ring-shaped light source 420 is red or blue, and the light emitting color of the second ring-shaped light source 420 is different from the light emitting color of the first ring-shaped light source 410.
In one possible implementation, the radial dimension of the second annular light source 420 is smaller than the radial dimension of the first annular light source 410, so that the second annular light source 420 can illuminate the board bottom of the circuit board via the area enclosed by the first annular light source 410 so as to illuminate the area that is not illuminated by the first annular light source 410.
In one possible implementation, the distance between the second annular light source 420 and the second surface is in a range of 100mm to 600mm, and preferably, the distance between the second annular light source 420 and the second surface is in a range of 250mm to 450mm. For example, the distance between the second annular light source 420 and the second surface may be set to any value between 100mm, 200mm, 250mm, 300mm, 350mm, 400mm, 450mm, 500mm, 600mm, or 100mm to 600mm according to actual needs, so as to increase the flexibility of setting the second annular light source 420.
In an application scenario, when the light emitting color of the first annular light source 410 is blue, the light emitting color of the second annular light source 420 is red, and both the first annular light source 410 and the second annular light source 420 illuminate towards the bottom of the circuit board, the solder joint position of the bottom of the circuit board displays blue, the area which cannot be illuminated by blue light displays red, and the plane part displays purple (blue + red superposition), so that the plane part when the first annular light source 410 is used alone can be eliminated, and the analysis process of the board bottom image can be simplified.
In one possible implementation, the second annular light source 420 is movably mounted on the mounting frame 100, so that the distance between the second annular light source 420 and the second face is adjustable. Illustratively, the second ring-shaped light source 420 may be installed on the installation frame 100 through a connector, and the connection position of the connector on the installation frame 100 may be adjusted along the height direction of the installation frame 100, so that the second ring-shaped light source 420 may be adjusted along the height direction of the installation frame 100, thereby achieving the purpose of adjusting the distance between the second ring-shaped light source 420 and the second surface, so as to improve the flexibility of the application of the detection apparatus.
In one possible implementation manner, a second included angle is formed between the light emitted from the second annular light source 420 and the second surface, and the angle of the second included angle ranges from 60 degrees to 90 degrees. For example, the second included angle may be set to any value between 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, 85 degrees, 90 degrees or 60 degrees and 90 degrees according to actual needs, so as to be beneficial to ensuring the effect of the second annular light source illuminating the bottom of the circuit board in the inspection station.
Optionally, the second ring-shaped light source 420 is movably mounted on the mounting frame 100, so that a second included angle between the second ring-shaped light source 420 and the second face is adjustable.
In one possible implementation, the first annular light source 410 includes four first bar-shaped light sources, the four first bar-shaped light sources surround the first annular light source 410, and the first annular light source 410 is, for example, square or rectangular. The four first bar light sources are moved in a direction parallel to the second face to expand or contract the area enclosed by the first ring light sources 410 to accommodate different sized circuit boards located in the inspection station.
For example, the four first bar-shaped light sources may be adjusted toward the direction of enlarging the enclosing area of the first annular light source 410 at the same time, or may be adjusted toward the direction of reducing the enclosing area of the first annular light source 410 at the same time. Alternatively, two of the four first bar light sources may be adjusted toward the direction of enlarging the enclosed area of the first ring light source 410, and the other two of the four first bar light sources may be adjusted toward the direction of reducing the enclosed area of the first ring light source 410. Alternatively, each of the four first bar light sources may be individually adjusted to expand the enclosing area of the first ring light source 410 or to reduce the enclosing area of the first ring light source 410. Thereby the flexibility of the application of the detection device can be improved.
In one possible implementation, the second annular light source 420 includes four second bar-type light sources, and the four second bar-type light sources surround the second annular light source 420, and the second annular light source 420 is, for example, square or rectangular. The four second bar-shaped light sources are moved in a direction parallel to the second surface to enlarge or reduce the area enclosed by the second ring-shaped light source 420.
For example, the four second bar light sources may be adjusted towards the direction of enlarging the enclosed area of the second annular light source 420, or may be adjusted towards the direction of reducing the enclosed area of the second annular light source 420. Alternatively, two of the four second bar light sources may be adjusted toward the direction of enlarging the enclosed area of the second annular light source 420, and the other two of the four second bar light sources may be adjusted toward the direction of reducing the enclosed area of the second annular light source 420. Still alternatively, each of the four second bar light sources may be individually adjusted in a direction of enlarging the enclosed area of the second annular light source 420, or in a direction of reducing the enclosed area of the second annular light source 420. Thereby the flexibility of the application of the detection device can be improved.
In a possible implementation manner, the detection device further includes a board light source 500, the board light source 500 is located at one side where the first surface is located, and the board light source 500 can supplement and illuminate the board surface of the circuit board located in the detection station, so that the image acquisition device 300 located at one side where the first surface of the detection station is located can acquire a relatively clear image of the board surface of the circuit board.
Wherein, face light source 500 includes third annular light source, and the luminescent color of third annular light source is white, and the interval scope between third annular light source and the first face is 400mm to 700mm, and is exemplary, and the interval between third annular light source and the first face can set up as actual need 400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm or the arbitrary value between 400mm to 700mm to increase the flexibility that face light source 500 set up.
In one possible implementation, the third ring light source is movably mounted on the mounting frame 100, so that the distance between the third ring light source and the first face is adjustable. Illustratively, the third ring-shaped light source can be mounted on the mounting frame 100 through a connector, and the connection position of the connector on the mounting frame 100 can be adjusted along the height direction of the mounting frame 100, so that the third ring-shaped light source can be adjusted along the height direction of the mounting frame 100, thereby achieving the purpose of adjusting the distance between the third ring-shaped light source and the first surface, so as to improve the flexibility of the application of the detection apparatus.
In one possible implementation, the third annular light source includes four third bar-shaped light sources, and the four third bar-shaped light sources surround the third annular light source, and the third annular light source is exemplarily square or rectangular. The four third strip-shaped light sources move along the direction parallel to the first surface so as to enlarge or reduce the area enclosed by the third annular light sources.
For example, the four third bar-shaped light sources may be adjusted towards a direction of expanding the enclosed area of the third annular light source, or may be adjusted towards a direction of contracting the enclosed area of the third annular light source. Or, two of the four third strip-shaped light sources can be adjusted towards the direction of expanding the enclosed area of the third annular light source, and the other two of the four third strip-shaped light sources can be adjusted towards the direction of reducing the enclosed area of the third annular light source. Or, each of the four third strip light sources may be adjusted individually in a direction of enlarging the enclosed area of the third ring light source, or in a direction of reducing the enclosed area of the third ring light source. Thereby the flexibility of the application of the detection device can be improved.
In one possible implementation, the panel light source 500 includes, but is not limited to, halogen and LED lights; the panel bottom light source 400 includes, but is not limited to, a halogen lamp and an LED lamp.
In a possible implementation manner, the plate bottom light source 400 and the plate surface light source 500 are correspondingly arranged on two opposite sides of the detection station; image acquisition equipment 300 is correspondingly arranged on two opposite sides of the detection station. For example, there may be one detection station, where the plate bottom light source 400 and the plate surface light source 500 are correspondingly disposed on two opposite sides of one detection station, and the image acquisition device 300 is correspondingly disposed on two opposite sides of one detection station; or, the detection station can have two or more, and every relative both sides that detect the station all correspond and are provided with board bottom light source 400 and face light source 500, and every relative both sides that detect the station all correspond simultaneously and are provided with image acquisition equipment 300. Therefore, each detection station can collect the board surface image of the circuit board and the board bottom image of the circuit board, and the board surface image and the board bottom image of the circuit board positioned in each detection station can be collected successively.
In a possible implementation manner, the opposite two sides of the detection station are correspondingly provided with the board bottom light source 400 and the board surface light source 500, and an area, which is not shielded by the circuit board located in the detection station, in the detection station is provided with a light shielding structure, and the light shielding structure is used for preventing the board bottom light source 400 and the board surface light source 500 from interfering with each other. Thereby the face image and the board bottom image that are located the circuit board in the detection station that can gather simultaneously are favorable to improving detection device's work efficiency.
In a possible implementation manner, at least two detection stations are arranged in the conveying direction of the conveying mechanism 200, and a panel light source 500 and an image acquisition device 300 are correspondingly arranged on one side, facing the first panel, of one of the two adjacent detection stations; and one side of the other detection station facing the second surface in the two adjacent detection stations is correspondingly provided with a plate bottom light source 400 and an image acquisition device 300. Therefore, two adjacent detection stations can respectively collect the board surface image and the board bottom image of the circuit board, so that the assembly line type operation can be realized, and the mutual interference of the board surface light source 500 and the board bottom light source 400 can be avoided.
In one possible implementation manner, the conveying mechanism 200 is provided with a detection area avoiding structure 210, and the detection area avoiding structure 210 is configured to enable the image acquisition device 300 to capture a board surface image and/or a board bottom image of the circuit board when the circuit board is located at the detection station.
Illustratively, the circuit board is clamped or supported on the conveying mechanism 200, and when the conveying mechanism 200 conveys the circuit board to the detection station, a to-be-detected area of the board surface of the circuit board is exposed in the detection station through the detection area avoiding structure 210, so that the image acquisition device 300 can shoot a board surface image of the circuit board; and/or the to-be-detected region of the bottom of the circuit board is exposed in the detection station through the detection region avoiding structure 210, so that the image acquisition equipment 300 can shoot the bottom image of the circuit board.
In a possible implementation, the detection device further comprises a housing 600, and the housing 600 is disposed on an outer surface of the mounting frame 100. For example, when the mounting frame 100 is a quadrangular prism, the housing 600 may cover six surfaces of the quadrangular prism, and the housing 600 may be mounted on the mounting frame 100 by means of clipping, screwing, or the like. The cover 600 can not only protect the devices inside the detection device, but also improve the appearance of the detection device.
The cover 600 is provided with an escape opening 610 at positions corresponding to both ends of the conveying mechanism 200, so that the circuit board can be set on the conveying mechanism 200 through the escape opening 610, or the circuit board can be taken off from the conveying mechanism 200 through the escape opening 610.
In one possible implementation, at least a portion of the housing 600 is a see-through housing 600 to facilitate a user's view of the interior of the detection device. Illustratively, the housing 600 may be a plastic housing 600, a glass housing 600, or a metal housing 600; alternatively, the cover 600 may be formed by a combination of at least two of the plastic cover 600, the glass cover 600, and the metal cover 600.
In a possible implementation, the housing 600 on one side of the detection device is rotatably connected to a column of the mounting frame 100, so that the housing 600 on the side can be opened, thereby facilitating the user to inspect or maintain the inside of the detection device.
In a possible implementation manner, the detection apparatus further includes an analyzing and computing device 700, where the analyzing and computing device 700 is electrically connected to the image capturing device 300; the analysis computing apparatus 700 is configured to analyze the board-side image and the board-bottom image of the circuit board acquired by the image acquisition apparatus 300.
For example, the analysis computing device 700 includes, but is not limited to, a computer in which a board surface template image and a board bottom template image of the circuit board may be stored so that the board surface image and the board bottom image of the circuit board captured by the image capturing device 300 may be compared with the board surface template image and the board bottom template image, respectively, to obtain the detection result.
In a possible implementation manner, the detection device further includes an indicator light 800, the indicator light 800 is disposed outside the mounting frame 100, and the indicator light 800 may be located on the top or the side of the detection device.
The indicator light 800 is used for indicating the state of the detection device, and for example, the indicator light 800 may include a plurality of colors, and the plurality of colors may correspond to a plurality of states of the detection device respectively, so that the user can judge the state of the detection device at a glance according to the indicator light 800, thereby being beneficial to improving the working efficiency. For example, the indicator light 800 may include three colors of red, yellow, and green, where red may represent a fault state of the detection device, green may represent a normal operation state of the detection device, and yellow may represent a standby state of the detection device.
In one possible implementation, the bottom of the mounting frame 100 may be provided with rollers, illustratively including but not limited to universal wheels. The rollers may include four sets of rollers disposed at four corners of the mounting frame 100, respectively, to facilitate movement of the sensing device.
In a possible implementation manner, the bottom of the mounting frame 100 may be provided with four supporting legs, and the four supporting legs are respectively disposed at four corners of the mounting frame 100, so that the detecting device can be stably supported. For example, the supporting legs may be height-adjustable supporting legs, so as to further ensure the stability of the placement of the detection device.
The embodiment of the invention provides a detection method which is applied to the detection device. Illustratively, the executing body of the detection method includes, but is not limited to, a detection device, a computer, a chip or a server, etc.
The detection method comprises the following steps:
and controlling the conveying mechanism to convey the circuit board to the detection station.
And controlling the image acquisition equipment to acquire the plate surface image and/or the plate bottom image of the circuit board.
It can be understood that the image acquisition equipment for acquiring the plate surface image of the circuit board is positioned at one side of the first surface of the detection station; the image acquisition equipment for acquiring the bottom image of the circuit board is positioned on one side of the second surface of the detection station.
In one possible implementation, the image capture device may be controlled to capture both the board image and the board bottom image of the circuit board. For example, after the circuit board enters the detection station, image acquisition devices on two opposite sides of the detection station are controlled to acquire images at the same time so as to obtain a board surface image and a board bottom image of the circuit board.
In another possible implementation manner, the image acquisition device may be controlled to sequentially acquire the board surface image and the board bottom image of the circuit board. In some implementation manners, after the circuit board enters the detection station, the image acquisition device located on the first surface of the detection station is controlled to acquire the board surface image of the circuit board, and then the image acquisition device located on the second surface of the detection station is controlled to acquire the board bottom image of the circuit board. Or firstly controlling the image acquisition equipment positioned on the second surface of the detection station to acquire the board bottom image of the circuit board, and then controlling the image acquisition equipment positioned on the first surface of the detection station to acquire the board surface image of the circuit board.
In other implementation manners, the circuit board is controlled to enter the upstream detection station in the conveying direction, the image acquisition device on the first surface of the upstream detection station is controlled to acquire the board surface image of the circuit board, then the circuit board is controlled to enter the downstream detection station in the conveying direction, and the image acquisition device on the second surface of the downstream detection station is controlled to acquire the board bottom image of the circuit board. Or firstly controlling the circuit board to enter the upstream detection station in the conveying direction, controlling the image acquisition equipment on the second surface of the upstream detection station to acquire the board bottom image of the circuit board, then controlling the circuit board to enter the downstream detection station in the conveying direction, and controlling the image acquisition equipment on the first surface of the downstream detection station to acquire the board surface image of the circuit board.
In a possible implementation manner, before controlling the image capturing device to capture the board bottom image of the circuit board, the method further includes: and controlling the board bottom light source to polish the board bottom of the circuit board. The plate bottom light source comprises a first annular light source and a second annular light source, and when the plate bottom light source is specifically applied, only the first annular light source can be controlled to shine to the plate bottom of the circuit board according to actual needs; or the first annular light source and the second annular light source can be controlled to simultaneously shine to the bottom of the circuit board according to actual needs.
In a possible implementation manner, before controlling the image capturing device to capture the board surface image of the circuit board, the method further includes: the surface light source of the control plate is polished to the surface of the circuit board. When the circuit board is applied specifically, when the ambient light is dark, the light source on the board surface can be used for supplementing light to the board surface of the circuit board.
In the description of the embodiments of the present invention, it is to be understood that the terms "top," "bottom," "upper," "lower," "left," "right," "vertical," "horizontal," and the like, if any, refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present invention and to simplify the description, and do not indicate or imply that the referenced devices or components must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus, are not to be construed as limiting the embodiments of the present invention.
In the description of embodiments of the present invention, it should be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral to one another; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (18)

1. The detection device is characterized by comprising an installation frame, a conveying mechanism and an image acquisition device;
the conveying mechanism and the image acquisition equipment are both arranged on the mounting frame;
the image acquisition equipment is positioned on two opposite sides of the conveying mechanism and faces the conveying mechanism;
a detection station is arranged in the conveying direction of the conveying mechanism, the conveying mechanism is used for conveying a circuit board to the detection station, and the image acquisition equipment is used for acquiring a board surface image and a board bottom image of the circuit board when the circuit board is positioned at the detection station;
the detection station comprises a first surface and a second surface, the first surface is used for corresponding to the board surface of the circuit board, and the second surface is used for corresponding to the board bottom of the circuit board.
2. The detecting device according to claim 1, further comprising a plate bottom light source located on a side where the second face is located, the plate bottom light source comprising a first annular light source;
the distance between the first annular light source and the second face ranges from 10mm to 50mm; the first annular light source is used for emitting low-angle annular light towards the detection station.
3. The detecting device for detecting the rotation of a motor rotor as claimed in claim 2, wherein the light emitting color of the first annular light source is red light or blue light.
4. The detection apparatus of claim 2, wherein the first ring light source is movably mounted on the mounting frame such that a spacing between the first ring light source and the second face is adjustable.
5. The detecting device according to claim 2, wherein a first included angle is formed between the light emitted from the first annular light source and the second surface, and the angle of the first included angle is in a range from 10 degrees to 50 degrees.
6. The inspection apparatus of claim 2, wherein said plate backlight further comprises a second annular light source located on a side of said first annular light source remote from said inspection station;
the light emitting color of the second annular light source is red light or blue light, and the light emitting color of the second annular light source is different from the light emitting color of the first annular light source.
7. The detecting device according to claim 6, characterized in that the radial dimension of said second annular light source is smaller than the radial dimension of said first annular light source.
8. The detecting device according to claim 6, wherein a spacing between the second annular light source and the second face ranges from 100mm to 600mm.
9. The detecting device according to claim 6, wherein the second annular light source is movably mounted on the mounting frame so that a spacing between the second annular light source and the second face is adjustable.
10. The detecting device for detecting the rotation of a motor rotor as claimed in claim 6, wherein a second included angle is formed between the light emitted by the second annular light source and the second surface, and the angle range of the second included angle is 60 degrees to 90 degrees.
11. The detecting device for detecting the rotation of a motor rotor according to claim 6, wherein the first annular light source comprises four first bar-shaped light sources, and the four first bar-shaped light sources surround the first annular light source; the four first strip-shaped light sources move along the direction parallel to the second surface so as to enlarge or reduce the area enclosed by the first annular light source; and/or the presence of a gas in the gas,
the second annular light source comprises four second strip-shaped light sources, and the four second strip-shaped light sources surround the second annular light source; the four second strip-shaped light sources move along the direction parallel to the second face so as to enlarge or reduce the area enclosed by the second annular light source.
12. The detecting device for detecting the rotation of the motor rotor according to the claims 2 to 11, further comprising a plate surface light source, wherein the plate surface light source is positioned on one side of the first surface, and the plate surface light source comprises a third annular light source;
the light emitting color of the third annular light source is white;
the distance between the third annular light source and the first face ranges from 400mm to 700mm.
13. The detecting device for detecting the rotation of a motor rotor as claimed in claim 12, wherein the third annular light source is movably installed on the installation frame so that the distance between the third annular light source and the first surface can be adjusted; and/or the presence of a gas in the gas,
the third annular light source comprises four third strip-shaped light sources, and the four third strip-shaped light sources are enclosed to form the third annular light source; the four third strip-shaped light sources move along the direction parallel to the first surface so as to enlarge or reduce the area enclosed by the third annular light sources.
14. The detection device according to claim 12, wherein the plate bottom light source and the plate surface light source are correspondingly arranged on two opposite sides of the detection station; the image acquisition equipment is correspondingly arranged on two opposite sides of the detection station;
and/or the presence of a gas in the gas,
the opposite two sides of the detection station are correspondingly provided with the plate bottom light source and the plate surface light source; and a shading structure is arranged in an area, which is not shaded by the circuit board positioned in the detection station, of the detection station, and the shading structure is used for preventing the board bottom light source and the board surface light source from interfering with each other.
15. The inspection device of claim 12, wherein at least two inspection stations are provided in the conveying direction of the conveying mechanism;
one side, facing the first surface, of one of the two adjacent detection stations is correspondingly provided with the plate surface light source and the image acquisition equipment;
and one side of the other detection station of the two adjacent detection stations, which faces the second surface, is correspondingly provided with the plate bottom light source and the image acquisition equipment.
16. The inspection device according to any one of claims 1 to 11, wherein the conveying mechanism is provided with an inspection area avoiding structure configured to enable the image capturing apparatus to capture a board-side image and/or a board-bottom image of the circuit board when the circuit board is located at the inspection station.
17. A detection method applied to the detection device according to any one of claims 1 to 16, the detection method comprising:
controlling a conveying mechanism to convey the circuit board to a detection station;
and controlling an image acquisition device to acquire the board surface image and/or the board bottom image of the circuit board.
18. The inspection method according to claim 17, further comprising, before the controlling the image pickup device to pick up the board bottom image of the circuit board:
controlling a board bottom light source to polish the board bottom of the circuit board;
and/or the presence of a gas in the gas,
before the control image acquisition equipment gathers the face image of circuit board, still include:
and the surface light source of the control plate polishes the surface of the circuit board.
CN202210934792.4A 2022-08-04 2022-08-04 Detection device and detection method Pending CN115236097A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210934792.4A CN115236097A (en) 2022-08-04 2022-08-04 Detection device and detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210934792.4A CN115236097A (en) 2022-08-04 2022-08-04 Detection device and detection method

Publications (1)

Publication Number Publication Date
CN115236097A true CN115236097A (en) 2022-10-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210934792.4A Pending CN115236097A (en) 2022-08-04 2022-08-04 Detection device and detection method

Country Status (1)

Country Link
CN (1) CN115236097A (en)

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