CN111426271B - Detection device and detection method - Google Patents
Detection device and detection method Download PDFInfo
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- CN111426271B CN111426271B CN202010469804.1A CN202010469804A CN111426271B CN 111426271 B CN111426271 B CN 111426271B CN 202010469804 A CN202010469804 A CN 202010469804A CN 111426271 B CN111426271 B CN 111426271B
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- assembly
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- shell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- General Physics & Mathematics (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The present application relates to a detection device and a detection method. The detection device is used for assisting in detecting the installation accuracy of an assembly of an electronic device, the electronic device comprises a shell and the assembly arranged on the shell, and the assembly is provided with a reference marker. The detection device comprises a base, a positioning assembly and a detection assembly. The positioning component is arranged on the base and used for bearing the shell. The detection assembly is connected to the base; the detection assembly comprises a support and a laser emitter. The support member is connected between the base and the laser emitter, the laser emitter is arranged opposite to the positioning component and used for emitting laser beams to the shell and the assembly part arranged on the positioning component, and the laser beams are projected on the assembly part to form a laser reference line used for assisting in determining the installation position of the assembly part relative to the shell. The detection device can assist workers to judge the installation condition of the assembly part according to the ground, and avoids blind detection, so that the detection precision can be improved, and the probability of outflow of defective products is reduced.
Description
Technical Field
The present disclosure relates to the field of assembly inspection, and more particularly, to an assembly inspection device and an assembly inspection method.
Background
With the development and progress of science and technology, the communication technology has been developed rapidly and greatly, and with the improvement of the communication technology, the popularization of intelligent electronic products has been improved to an unprecedented level, and more intelligent terminals or electronic devices become an indispensable part of the life of people, such as smart phones, smart televisions, computers and the like.
Electronic devices generally include a plurality of components, such as a protective lens for protecting a camera and a housing for housing electronic components, and the protective lens is mounted on the housing. When assembling the protection lens to the housing, the protection lens is generally required to be strictly aligned with the camera so as to prevent the protection lens from affecting the image collected by the camera. After the assembly is completed, whether the protective lens is assembled in place or not is visually checked by naked eyes of workers, the visual check is convenient and easy to operate, but the naked eye visual check is a blind check without a reference datum, the accuracy is low, the missing check is easily caused, and the defective products with high probability flow out.
Disclosure of Invention
The embodiment of the application provides a detection device and a detection method.
In a first aspect, an embodiment of the present application provides a detection device for assisting in detecting mounting accuracy of an assembly of an electronic device, where the electronic device includes a housing and an assembly disposed on the housing, and the assembly has a reference marker. The detection device comprises a base, a positioning assembly and a detection assembly. The positioning component is arranged on the base and used for bearing the shell. The detection assembly is connected to the base; the detection assembly comprises a support and a laser emitter. The support member is connected between the base and the laser emitter, the laser emitter is arranged opposite to the positioning component and used for emitting laser beams to the shell and the assembly part arranged on the positioning component, and the laser beams are projected on the assembly part to form a laser reference line used for assisting in determining the installation position of the assembly part relative to the shell.
In a second aspect, an embodiment of the present application further provides a detection method, where the detection method is applied to a detection device for detecting an installation accuracy of an assembly of an electronic device, where the electronic device includes a housing and the assembly disposed on the housing, and the assembly has a reference marker. The detection device comprises a base, a positioning assembly and a detection assembly. The positioning component is arranged on the base and used for bearing the shell. The detection assembly is connected to the base; the detection assembly comprises a support and a laser emitter. The support piece is connected between the base and the laser emitter, the laser emitter is arranged opposite to the positioning component and used for emitting laser beams to the shell and the assembly part arranged on the positioning component, and the laser beams are projected on the assembly part to form a laser reference line used for assisting in determining the installation precise position of the assembly part relative to the shell. The detection assembly further comprises a visual identification module and a processor, the visual identification module is arranged on the supporting piece and is opposite to the positioning assembly, the visual module is used for collecting images of the assembly parts, and the processor is used for determining the installation accuracy of the assembly parts relative to the shell according to the relative positions of the reference markers and the laser reference lines in the images. The detection method comprises the following steps: projecting a laser reference line to the assembly; acquiring an image containing a reference marker and a laser reference line; determining the relative position relationship between the reference marker and the laser reference line according to the image; and determining the mounting accuracy of the assembly relative to the shell according to the relative position relation.
In the detection device and the detection method provided by the embodiment of the application, the laser emitter and the positioning component are arranged oppositely, the laser emitter is used for emitting laser beams to the shell and the assembly part arranged on the positioning component, the laser beams are projected on the assembly part to form laser reference lines for assisting in determining the installation position of the assembly part relative to the shell, when a worker visually inspects the assembly part, the installation precision of the assembly part relative to the shell can be judged according to the relative position relation between the reference marker of the assembly part and the laser reference lines, so that the installation condition of the assembly part can be judged according to the ground, the blind inspection is avoided, the detection precision can be improved, and the outflow probability of defective products is reduced.
Further, when the detection device comprises the visual identification module and the processor, the relative position relationship between the reference marker and the laser reference line can be determined according to the image containing the reference marker and the laser reference line, so that the installation condition of the assembly part is automatically judged, the manual labor can be liberated, and the detection precision is further improved.
Drawings
In order to more clearly illustrate the technical solution of the application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of a detection device provided in an embodiment of the present application in an operating state.
Fig. 2 is a partial schematic view of an electronic device detected by a detection device according to an embodiment of the present application.
Fig. 3 is a perspective view of the detecting device shown in fig. 1.
FIG. 4 is a schematic structural diagram of one embodiment of a positioning assembly of the detection apparatus shown in FIG. 1.
FIG. 5 is a schematic structural diagram of another embodiment of the detecting device shown in FIG. 1.
FIG. 6 is a schematic diagram of an embodiment of a stationary laser emitter of the detection apparatus of FIG. 1.
Fig. 7 is a block flow diagram of a detection method provided in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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 application.
As used in embodiments herein, "electronic device" includes, but is not limited to, an apparatus that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", an "electronic apparatus", and/or an "electronic device". Examples of electronic devices include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; as well as conventional laptop and/or palmtop receivers, gaming consoles, or other electronic devices that include radiotelephone transceivers.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, the present disclosure provides a detection apparatus 100 for detecting or assisting in detecting component assembly accuracy of an electronic device 200. The electronic device 200 may be, but is not limited to, an electronic device such as a mobile phone, a tablet computer, a game machine, a smart watch, and the like. The electronic device 200 of the present embodiment is described by taking a mobile phone as an example. The electronic device 200 includes a housing 210 and a fitting 230 disposed on the housing 210, the fitting 230 is exposed through a surface of the housing 210, and the detection apparatus 100 is used to detect or assist in detecting the mounting accuracy of the fitting 230 with respect to the housing 210. It should be understood that, when the detecting device 100 detects or assists in detecting the installation accuracy of the assembly member 230, the object to be detected may be a finished product of the electronic device 200, and also an assembled semi-finished product of the housing 210 and the assembly member 230, which is not limited in this application.
Further, the detecting device 100 includes a base 10, a positioning assembly 30, and a detecting assembly 50. The positioning assembly 30 and the detecting assembly 50 are both disposed on the base 10. The positioning assembly 30 is used to carry the housing 210. The detecting assembly 50 includes a supporting member 52 and a laser emitter 54, the supporting member 52 is connected to the base 10, and the laser emitter 54 is disposed at an end of the supporting member 52 away from the base 10 and opposite to the positioning assembly 30. The laser emitter 54 is configured to emit a laser beam toward the housing 210 and the fitting 230 disposed on the positioning assembly 30, and the laser beam is projected on the fitting 230 to form a laser reference line 540 for assisting in determining the installation position of the fitting 230 relative to the housing 210. It should be noted that, in the present specification, when an element is referred to as being "disposed on" another element, it can be directly connected to the other element or intervening elements may be present (i.e., indirectly connected to the other element); when a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present, i.e., there may be an indirect connection between the two components.
Referring to fig. 2, in the embodiment of the present application, the assembly member 230 has the reference marker 231, and when a worker performs a visual inspection on the assembly member 230, the installation position and the installation accuracy of the assembly member 230 relative to the housing 210 can be determined according to the relative position relationship between the reference marker 231 of the assembly member 230 and the laser reference line 540, so that the installation condition of the assembly member 230 can be determined accordingly, thereby avoiding blind detection, improving the detection accuracy, and reducing the probability of defective product outflow. For example, the worker may determine whether the installation accuracy of the current assembly 230 meets the requirement according to the distance or the angular relationship between the reference marker 231 and the laser reference line 540, and if the distance or the angle between the reference marker 231 and the laser reference line 540 falls within the range allowed by the installation error, determine that the installation accuracy of the current assembly 230 meets the requirement, and determine that the detected current product is good.
In the embodiment of the present application, the fitting 230 has a circular shape, and the accuracy of the installation angle of the fitting 230 on the housing 210 is required to satisfy a predetermined range. The inspection device 100 needs to project a straight laser reference line 540 to the circular assembly 230 so as to facilitate the worker to determine the installation angle of the assembly 230 according to the laser reference line 540. Further, the shape of the reference marker 231 on the assembly member 230 is not limited, for example, the reference marker 231 may be a straight line, and the worker may determine whether the installation angle of the assembly member 230 is within the allowable range according to the geometric relationship (such as an included angle, a parallel relationship, a coincidence relationship, etc.) between the straight line and the laser reference line 540; for another example, the reference marker 231 may be a geometric figure such as a rectangle, a triangle, etc., and the worker may determine whether the installation angle of the assembly 230 is within the allowable range according to the geometric relationship (e.g., an included angle, a parallel relationship, a coincidence relationship, etc.) between a specific edge of the geometric figure and the laser reference line 540.
In this embodiment, the assembly member 230 is a decorative cover plate of the camera module of the electronic device 200 for protecting and decorating the camera of the camera module. The shooting module of the electronic device 200 includes at least two cameras, and the assembly 230 is provided with at least two light-transmitting portions 233, and each light-transmitting portion 233 is disposed corresponding to one camera, so as to facilitate light passing through the camera to collect images. The light-transmitting portion 233 is a reference mark 231 of the assembly 230. Further, the surface of the fitting 230 is provided with a decoration layer (such as solid ink, multi-color ink, or ink with a specific pattern) on the surface except for the light-transmitting portion 233, and the portion surrounded by the decoration layer defines the light-transmitting portion 233. In the present embodiment, the light-transmitting portions 233 are circular and three in number. The worker can determine the installation angle and the installation accuracy of the assembly 230 according to the relationship between the three circular light-transmitting portions 233 and the laser reference line 540. If the three circular light-transmitting portions 233 are tangent to the laser reference line 540, it is determined that the installation accuracy of the current assembly 230 meets the requirements, and the detected current product is a good product; for another example, if two of the three circular light-transmitting portions 233 are not tangent to the laser reference line 540, it indicates that the installation angle of the assembly 340 does not fall within the specified range, and the worker may determine that the installation accuracy of the current assembly 230 is not satisfactory.
Referring to fig. 3, in the present embodiment, the base 10 includes a supporting platform 12 and a console 14, the supporting platform 12 is used for supporting the positioning assembly 30 and the detecting assembly 50, and the console 14 is disposed on the supporting platform 12 and is used for providing an operation interface for a worker. The console 14 includes a control center 141 and a control panel 143 electrically connected to the control center 141. The control center 141 may be a main board of the detection apparatus 100, which may include circuit boards, chips, sensors, and other electronic elements for implementing functions of the detection apparatus 100. The control panel 143 is disposed on the surface of the base 10, and may be a display panel 1431 including a touch interface, and may further include a control button 1433, where the display panel 1431 is used to display an operation interface, and the control button 1433 is used to control the on and off of the detection apparatus 100.
The positioning assembly 30 is fixed on the base 10 and is used for positioning and fixing the housing 210 to prevent the housing 210 from loosening. In the present embodiment, the positioning assembly 30 includes a carrier 32 and at least two positioning members 34. The carrier 32 is fixed on the platform 12, and at least two positioning members 34 are disposed on the carrier 32. At least two positioning members 34 are spaced apart to collectively define a receiving space 340 for receiving the electronic device 200 or the housing 210.
Further, in the present embodiment, the carrier 32 is substantially plate-shaped, and may be fixed to the surface of the platform 12 by a threaded fastener or the like to prevent the carrier 32 from loosening. The bearing member 32 is provided with two avoiding grooves 321, and the two avoiding grooves 321 are both formed on the surface of the bearing member 32 departing from the bearing table 12 in a recessed manner. The two avoiding grooves 321 are respectively disposed on two opposite sides of the bearing component 32, and each avoiding groove 321 penetrates through a corresponding side of the bearing component 32 and a surface deviating from the bearing platform 12 to form a space for accommodating fingers of a worker, so that the worker can conveniently take and place the electronic device 200 or the housing 210.
Further, the carrier 32 is further provided with at least two accommodating grooves 323, the at least two accommodating grooves 323 are disposed at intervals on a surface of the carrier 32 away from the susceptor 12, and each accommodating groove 323 is used for accommodating a corresponding one of the positioning elements 34. Further, in the present embodiment, the carrier 32 is substantially in the shape of a rectangular plate, and the carrier 32 in the shape of a rectangular plate is provided with an accommodating groove 323 on each side edge.
Each positioning element 34 is movably disposed in the corresponding receiving groove 323 and protrudes relative to the surface of the supporting element 32 to support and limit the housing 210 in the receiving space 340. In the present embodiment, the at least two positioning members 34 include a first X-direction positioning member 341, a second X-direction positioning member 343, a first Y-direction positioning member 345 and a second Y-direction positioning member 347. The first X-direction positioning element 341 and the second X-direction positioning element 343 are respectively disposed on two opposite sides of the supporting element 32, that is, the first X-direction positioning element 341 and the second X-direction positioning element 343 are disposed at an interval in a first direction (X direction in the figure), so as to form a clamping structure for the housing 210 in the accommodating space 340 in the first direction, thereby limiting the housing 210 in the first direction. In the present embodiment, the first direction is defined as a width direction of the carrier 32, and may also be understood as a width direction of the electronic apparatus 200. The first Y-direction positioning element 345 and the second Y-direction positioning element 347 are respectively disposed on the other two opposite sides of the supporting element 32, that is, the first Y-direction positioning element 345 and the second Y-direction positioning element 347 are disposed at an interval in the second direction (Y direction in the figure), so as to form a clamping structure for the housing 210 in the accommodating space 340 in the second direction, thereby limiting the housing 210 in the second direction. In the present embodiment, the second direction is not parallel to the first direction, and further, the second direction is substantially perpendicular to the first direction, and the second direction is defined as a length direction of the carrier 32, which can also be understood as a length direction of the electronic apparatus 200.
Referring to fig. 4, in some embodiments, the positioning assembly 30 further includes a plurality of elastic members 36, and the elastic members 36 are disposed between the positioning member 34 and the supporting member 32 and are used for providing a restoring force to the positioning member 34 toward the supporting member 32, so that the detecting device 100 can be adapted to housings 210 with different sizes. Furthermore, corresponding to the plurality of positioning members 34, at least one elastic member 36 is disposed in each accommodating groove 323, and the elastic member 36 is connected between the groove wall of the accommodating groove 323 and the corresponding positioning member 34. In this embodiment, the elastic element 36 is a spring, and in other embodiments, the elastic element 36 may be a spring, an elastic sleeve, an elastic block, or other structures with elastic deformation capability.
Further, in the present embodiment, each positioning member 34 includes a body 3401 and an abutting portion 3403. The body 3401 is substantially block-shaped and movably disposed in the corresponding receiving groove 323. The abutting portion 3403 is disposed on a side of the body 3401 facing the accommodating space 340 and protrudes relative to a surface of the body 3401. Further, the abutting portion 3403 is convexly disposed at the approximate middle position of the body 3401, and the abutting portion 3403 is used for directly abutting against the housing 210, so as to ensure that the volume thereof is small, reduce the contact area of the positioning member 34 and the housing 210, and avoid scraping damage to the housing 210 to the maximum extent. Further, the abutting portion 3403 is made of an elastic material, such as rubber, sponge, silicone, etc., to avoid abrasion to the housing 210.
Furthermore, two elastic members 36 are disposed in each accommodating groove 323, the two elastic members 36 are respectively located at two opposite sides of the abutting portion 3403, and each elastic member 36 is connected between the corresponding body 3401 and the groove wall of the accommodating groove 323, so as to provide a relatively balanced movement restoring force for the positioning member 34 as a whole. In the non-operating state, the housing 210 is not disposed in the accommodating space 340, and the elastic member 36 is in a free state and is not stretched or compressed, and the positioning member 34 is located at one end of the accommodating groove 323 relatively close to the accommodating space 340. When the housing 210 needs to be placed, the positioning member 34 needs to be moved away from the accommodating space 340 to expand the placing space of the housing 210, and the elastic member 36 is stretched to generate elastic potential energy. After the housing 210 is placed in the accommodating space 340, the elastic element 36 generates an elastic restoring force to apply a pulling force to the positioning element 34 toward the housing 210, so that the positioning element 34 abuts against the housing 210, and the positioning and clamping of the housing 210 are completed.
Referring to fig. 5, in some embodiments, the support member 52 is substantially "Jiong" and is fixed to the platform 12 and substantially perpendicular to the platform 12. The support 52 includes a support portion 521 and a bridge portion 523. In the present embodiment, the supporting portions 521 are substantially plate-shaped, and the number of the supporting portions 521 is two, and the two supporting portions 521 are disposed at an interval and are substantially located at two opposite sides of the accommodating space 340. The bridge portion 523 is substantially plate-shaped, and both ends thereof are connected to the two support portions 521, respectively. The bridge portion 523 is disposed opposite to the carrier 12, and is used for mounting the laser emitter 54 so that the laser emitter 54 can be spaced opposite to the accommodating space 340.
The laser transmitter 54 is connected to the bridge portion 523. In the present embodiment, the laser transmitter 54 is used to emit a linear spot. Referring to fig. 6, the laser transmitter 54 includes a housing 541, a laser diode 543, an aspheric focusing mirror 545, a cylindrical mirror 547, and a plano-convex cylindrical lens 549. The housing 541 is connected to the bridging portion 523, and the laser diode 543, the aspherical focusing mirror 545, the cylindrical mirror 547, and the plano-convex cylindrical lens 549 are all disposed inside the housing 541.
The housing 541 has a light exit hole to allow light of the laser diode 543 to exit. In this embodiment, the laser diode 543 is a standard photoelectric device, and has high electro-optic conversion efficiency. The aspheric focusing lens 545, the cylindrical lens 547 and the plano-convex cylindrical lens 549 are sequentially arranged in the shell along the light path of the laser diode 543. One end face of the aspheric focusing mirror 545 is aspheric, light emitted by the laser diode 543 is focused by the aspheric focusing mirror 545, and the focused light beam is dispersed into uniform linear laser by the cylindrical mirror 547 and the plano-convex cylindrical lens 549. Further, the cylindrical lens 547 and the plano-convex cylindrical lens 549 together form a combined lens, the cylindrical lens 547 and the plano-convex cylindrical lens 549 are coaxial, the convex surface or the plane of the plano-convex cylindrical lens 549 faces the cylindrical lens 547, the cylindrical lens 547 disperses the laser beam into linear laser, and the plano-convex cylindrical lens 549 can focus the light scattered at the two ends of the linear light source to the middle, so that the energy distribution of the whole linear light source is uniform. The cylindrical mirror 547 and the plano-convex cylindrical lens 549 can be spaced according to the requirements of the optical system of the whole laser transmitter 54. Further, the cylindrical lens 547 and the plano-convex cylindrical lens 549 follow the following law: the closer the cylindrical mirror 547 is to the aspheric focusing mirror 543, the narrower the line width is; the closer the cylindrical lens 547 and the planoconvex cylindrical lens 549 are, the wider the line width is; the closer the plano-convex cylindrical lens 549 is to the detector, the narrower the line width.
Referring again to fig. 5, in the present embodiment, the detecting assembly 50 further includes a visual recognition module 56 and a processor 58. The vision recognition module 56 may be a machine vision module, which may include an image capture device such as a camera. The visual recognition module 56 is disposed on the bridging portion 523 and opposite to the positioning component 30. The processor 58 is electrically connected to the control center 141 and the vision recognition module 56, and is configured to control the vision recognition module 56 to capture an image of the assembly 230, and determine the mounting accuracy of the assembly 230 relative to the housing 210 according to the relative positions of the reference mark 231 and the laser reference line 540 in the image. Further, the processor 58 may be integrated with the visual recognition module 56, may be integrated with the control center 141, or may be a separate chip, which is not limited in this application.
In this embodiment, the inspection device 100 further includes an adjustment assembly 70, wherein the adjustment assembly 70 is connected between the laser emitter 54 and the support 52 for adjusting the position of the laser emitter 54 relative to the positioning assembly 30 such that the laser emitter 54 can accurately project the laser reference line 540 onto the assembly 230. Further, the adjustment assembly 70 includes a rail 72 disposed on the support 52, a first driving member 74 disposed on the rail 72, and a second driving member 76 disposed on the first driving member 74, and the laser transmitter 54 is connected to the second driving member 76. The first drive member 74 and the second drive member 76 may each be a linear motor or a linear cylinder, each of which is configured to drive the laser emitting device 54 in different directions to adjust the position of the laser emitting device 54 in a two-dimensional plane. The two-dimensional plane is substantially parallel to the plane of the fitting 230.
Specifically, the adjustment assembly 70 is also electrically connected to the processor 58 to allow the processor 58 to control the adjustment assembly 70 to adjust the position of the laser transmitter 54 to enable the laser reference line 540 to be projected to a desired location based on the position of the reference marker of the fitting 230. Further, the rails 72 are arranged in a direction substantially parallel to a plane (X-Y plane in the drawing) in which the plate-like shape of the carrier 32 is located, that is, substantially parallel to a plane in which the fitting 230 is located, and at least two-directional movement rails are provided thereon for guiding the moving direction of the laser transmitter 54. The first drive member 74 is a linear motor for driving the second drive member 76 in translation in the first direction (X-direction) to adjust the position of the second drive member 76 and thus the laser transmitter 54 in the first direction. Second drive 76 is a linear motor for driving laser emitting device 54 in translation in a second direction (the Y-direction) to adjust the position of laser emitting device 54 in the second direction.
In the present embodiment, the laser emitter 54 is mounted on the adjusting assembly 70, such that the laser reference line 540 emitted by the laser emitter 54 always extends substantially along the X direction, and the position of the laser emitter 54 is adjusted on the X-Y plane, so as to adjust the projection position of the laser reference line 540 on the X-Y plane, and prevent the laser reference line 540 from rotating on the X-Y plane, thereby ensuring that the laser reference line 540 has a precise reference meaning in assisting the determination of the mounting angle of the mounting member 230.
Specifically, referring to fig. 2 again, the processor 58 is configured to analyze the position of the reference marker 231 of the assembly 230 according to the image obtained by the visual recognition module 56, and determine the position of the laser emitter 54 according to the position of the reference marker 231, so that the positional relationship between the reference line 540 of the laser emitted by the laser emitter 54 and the reference marker 231 satisfies the predetermined condition. In the present embodiment, the reference marker 231 includes at least two circular light-transmitting portions 233, the visual recognition module 56 is configured to obtain an image including the at least two light-transmitting portions 233, and the processor 58 is configured to determine one light-transmitting portion 233 of the at least two light-transmitting portions 233 as a reference light-transmitting portion according to a preset rule. The preset rule may be that the light-transmitting portion 233 closest to the edge of the image is taken as the reference light-transmitting portion, or may be that the light-transmitting portion 233 closest to the origin in a preset coordinate system is taken as the reference light-transmitting portion, for example, the processor 58 establishes a preset coordinate system with the lower left corner of the image as the origin of the coordinate system, there are three light-transmitting portions 233, and the three light-transmitting portions 233 are arranged in parallel, and the preset rule is understood to take the one light-transmitting portion 233 closest to the lower left corner of the image as the reference light-transmitting portion. The processor 58 determines the coordinates of the reference light transmission portion after acquiring the reference light transmission portion, and determines the expected projection coordinates of the laser reference line according to preset conditions, wherein the preset conditions may be: the laser reference line extends along the X direction and is tangent to the circle of the reference light-transmitting portion. Then, the processor 58 converts the expected position coordinates of the laser emitter 54 according to the expected projection coordinates of the laser reference line, and finally drives the adjusting assembly 70 to drive the laser emitter 54 to move to the expected position according to the expected position coordinates. This can complete the process of automatically adjusting the laser reference line 540 according to the actual position of the assembly 230, thereby improving the reference value of the laser reference line 540 and improving the detection accuracy of the detection apparatus 100.
Further, in some embodiments, the processor 58 is configured to control the laser emitter 54 to project a laser reference line 540 onto the fitting 540, and to determine a relative positional relationship between the reference marker 231 and the laser reference line 540 based on the images of the reference marker 231 and the laser reference line 540, and to determine the mounting accuracy of the fitting 230 relative to the housing 210 based on the relative positional relationship. For example, the processor 58 is configured to determine whether the installation accuracy of the current assembly 230 meets the requirement according to the distance or the angular relationship between the reference marker 231 and the laser reference line 540, and if the distance or the angle between the reference marker 231 and the laser reference line 540 falls within the range allowed by the installation error, determine that the installation accuracy of the current assembly 230 meets the requirement, and determine that the detected current product is a good product. The processor 58 is configured to determine the installation angle of the assembly 230 according to the relationship between the three circular light-transmissive portions 233 and the laser reference line 540. For example, according to fig. 2, the processor 58 calculates a first coordinate expression of each of the three circular light-transmitting portions 233 in the image, calculates a second coordinate expression of the laser reference line 540 in the image, determines the above-mentioned positional relationship according to the first coordinate expression and the second coordinate expression, and determines that the installation accuracy of the current assembly 230 meets the requirement and the detected current product is a good product if all the three circular light-transmitting portions 233 are determined to be tangent to the laser reference line 540; as another example, two of the three circular light-transmitting portions 233 are not tangent to the laser reference line 540, and further determine the above-mentioned positional relationship, including: the centers of the three circular light-transmitting portions 233 are respectively determined according to the first coordinate expression, the center reference line is determined according to the centers of the three light-transmitting portions 233, the center reference line passes through the centers of the three light-transmitting portions 233, and the position relationship is determined according to the coordinate expression of the center reference line and the second coordinate expression, wherein the position relationship is represented by an included angle beta between the center reference line and the laser reference line 540, and the included angle beta is actually an installation deflection angle of the assembly member 230. Processor 58 further determines whether the installation deflection angle falls within a specified range, determines that the installation deflection angle of fitting 230 is the deflection allowed by the error if yes, and determines that the installation accuracy of the current fitting 230 is not satisfactory if no.
Further, referring to fig. 5 again, the detecting device 100 further includes an alarm 90, the alarm 90 is electrically connected to the processor 58 and is configured to send an alarm signal according to the determination result of the processor 58, and the alarm signal may include but is not limited to: voice prompt signal, light alarm signal, buzzing prompt signal, etc. Specifically, the processor 58 is also configured to control the alarm 90 to issue an alarm signal upon determining that the installation accuracy of the current fitting 230 is not satisfactory.
In the detection device provided by the embodiment of the application, the laser emitter and the positioning component are arranged oppositely, and are used for emitting laser beams to the shell and the assembly part arranged on the positioning component, the laser beams are projected on the assembly part to form laser reference lines for assisting in determining the installation position of the assembly part relative to the shell, when workers visually inspect the assembly part, the installation precision of the assembly part relative to the shell can be judged according to the relative position relation between the reference marker of the assembly part and the laser reference lines, so that the installation condition of the assembly part can be judged according to the ground, the blind inspection is avoided, the detection precision can be improved, and the outflow probability of defective products is reduced.
Further, when the detection device comprises the visual identification module and the processor, the relative position relationship between the reference marker and the laser reference line can be determined according to the image containing the reference marker and the laser reference line, so that the installation condition of the assembly part is automatically judged, the manual labor can be liberated, and the detection precision is further improved.
Referring to fig. 7, based on the above-mentioned detection apparatus, an embodiment of the present application further provides a detection method for detecting an installation accuracy of an assembly of an electronic apparatus, where the electronic apparatus includes a housing and an assembly disposed on the housing, and the assembly has a reference mark; the detection device comprises a base, and a positioning assembly and a detection assembly which are arranged on the base. The positioning component is arranged on the base and used for bearing the shell. The detection assembly is connected to the base; the detection assembly comprises a support and a laser emitter. The support member is connected between the base and the laser emitter, the laser emitter is arranged opposite to the positioning component and used for emitting laser beams to the shell and the assembly part arranged on the positioning component, and the laser beams are projected on the assembly part to form a laser reference line used for assisting in determining the installation position of the assembly part relative to the shell. The detection assembly further comprises a visual identification module and a processor, the visual identification module is arranged on the supporting piece and is opposite to the positioning assembly, the visual module is used for collecting images of the assembly parts, and the processor is used for determining the installation accuracy of the assembly parts relative to the shell according to the relative positions of the reference markers and the laser reference lines in the images. The detection method includes steps S110 to S170.
Step S110: a laser reference line is projected to the assembly.
In this embodiment, the processor controls the laser transmitter to project a laser reference line to the assembly.
Furthermore, the visual identification module collects an image containing the assembly part, and the processor is used for analyzing the position of a reference marker of the assembly part according to the image obtained by the visual identification module, and determining the position of the laser emitter according to the position of the reference marker, so that the position relation between a laser reference line emitted by the laser emitter and the reference marker meets a preset condition. In this embodiment, the reference marker includes at least two circular light-transmitting portions, the visual recognition module is configured to acquire an image including the at least two light-transmitting portions, and the processor is configured to determine one of the at least two light-transmitting portions as a reference light-transmitting portion according to a preset rule. The preset rule may be that the light-transmitting portion closest to the edge of the image is taken as the reference light-transmitting portion, or may be that the light-transmitting portion closest to the origin in a preset coordinate system is taken as the reference light-transmitting portion, for example, the processor establishes the preset coordinate system with the lower left corner of the image as the origin of the coordinate system, the number of the light-transmitting portions is three, and the three light-transmitting portions are arranged in parallel, and the preset rule is understood as taking the light-transmitting portion closest to the lower left corner of the image as the reference light-transmitting portion. The processor determines coordinates of the reference light-transmitting portion after acquiring the reference light-transmitting portion, and determines expected projection coordinates of the laser reference line according to a preset condition, where the preset condition may be: the laser reference line extends along the X direction and is tangent to the circle of the reference light-transmitting portion. And finally, driving an adjusting component to drive the laser emitter to move to the expected position according to the expected position coordinate. Therefore, the process of automatically adjusting the laser reference line according to the actual position of the assembly part can be completed, the reference value of the laser reference line is improved, and the detection precision of the detection device is improved.
Step S130: an image is acquired that includes a reference marker and a laser reference line.
In this embodiment, the visual recognition module acquires an image including a reference marker and a laser reference line.
Step S150: from the image, a relative positional relationship between the reference marker and the laser reference line is determined.
Step S170: and determining the mounting accuracy of the assembly relative to the shell according to the relative position relation.
In steps S150 and S170, the processor 58 determines a relative positional relationship between the reference marker and the laser reference line based on the images of the reference marker and the laser reference line, and determines the mounting accuracy of the fitting with respect to the housing based on the relative positional relationship. For example, the processor is configured to determine whether the installation accuracy of the current assembly part meets the requirement according to a distance or an angle relationship between the reference marker and the laser reference line, and if the distance or the angle between the reference marker and the laser reference line falls within a range allowed by the installation error, determine that the installation accuracy of the current assembly part meets the requirement, and determine that the detected current product is a good product. In the embodiment of the figure in particular, the processor is configured to determine the installation angle of the assembly based on the relationship between the three circular light-transmissive portions and the laser reference line. If the processor determines that the three circular light-transmitting parts are tangent to the laser reference line, the installation precision of the current assembly part meets the requirement, and the detected current product is a good product; as another example, two of the three circular light-transmitting portions are not tangent to the laser reference line, and the above positional relationship is further determined, including: the method comprises the steps of respectively determining the centers of circles of three circular light transmission parts according to a first coordinate expression, determining a central reference line according to the centers of the circles of the three light transmission parts, enabling the central reference line to pass through the centers of the circles of the three light transmission parts, and determining the position relation according to a coordinate expression and a second coordinate expression of the central reference line, wherein the position relation is represented by an included angle beta between the central reference line and a laser reference line, and the included angle beta is actually an installation deflection angle of an assembly part. The processor further judges whether the installation deflection angle falls into a specified range, if so, the installation deflection angle of the assembly part is determined to be deflection allowed by the error, and if not, the installation precision of the current assembly part is determined to be not in accordance with the requirement.
According to the detection method provided by the embodiment of the application, the relative position relation between the reference marker and the laser reference line is determined according to the image containing the reference marker and the laser reference line, so that the installation condition of the assembly part is automatically judged, the manual labor can be liberated, and the detection precision is further improved.
In this specification, particular features or characteristics described may be combined in any one or more embodiments or examples as appropriate. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. The detection device is characterized by being used for assisting in detecting the installation accuracy of an assembly part of an electronic device, wherein the electronic device comprises a shell and the assembly part arranged on the shell, the assembly part is provided with at least two light-transmitting parts, the light-transmitting parts are arranged corresponding to one camera, and the light-transmitting parts are reference markers of the assembly part; the detection device includes:
a base;
the positioning assembly is arranged on the base and used for bearing the shell; and
the detection assembly is connected to the base; the detection assembly comprises a support and a laser emitter; the supporting piece is connected between the base and the laser emitter, the laser emitter is arranged opposite to the positioning component and used for emitting laser beams to the shell and the assembly part arranged on the positioning component, the laser beams are projected on the assembly part to form laser reference lines used for assisting in determining the installation position of the assembly part relative to the shell, and the installation accuracy of the assembly part relative to the shell is judged according to the distance or angle relation between the reference markers and the laser reference lines.
2. The detection device as claimed in claim 1, wherein the positioning assembly includes a carrier disposed on the base and at least two positioning members disposed on the carrier, the at least two positioning members being spaced apart from each other and defining a receiving space for receiving the housing.
3. The detecting device for detecting the rotation of a motor rotor according to claim 2, wherein the at least two positioning members include a first X-direction positioning member, a second X-direction positioning member, a first Y-direction positioning member and a second Y-direction positioning member, the first X-direction positioning member and the second X-direction positioning member are relatively spaced in a first direction, the first Y-direction positioning member and the second Y-direction positioning member are relatively spaced in a second direction, and the first direction is not parallel to the second direction.
4. The detecting device for detecting the rotation of a motor rotor as claimed in claim 2, wherein the bearing member is provided with two avoiding grooves, and the two avoiding grooves are respectively arranged at two opposite sides of the bearing member.
5. The detecting device for detecting the rotation of a motor rotor as claimed in claim 2, wherein the supporting member defines at least two receiving slots, and each of the positioning members is movably disposed in a corresponding receiving slot and protrudes relative to the surface of the supporting member.
6. The detecting device for detecting the rotation of a motor rotor as claimed in claim 5, wherein each positioning member comprises a body and a supporting portion, the body is movably arranged in the containing groove, and the supporting portion is convexly arranged at one side of the body facing the containing space; two elastic pieces are arranged in each accommodating groove, the two elastic pieces are respectively positioned on two opposite sides of the abutting part, and each elastic piece is connected between the corresponding body and the groove wall of the accommodating groove.
7. The detection device according to claim 1, wherein the laser transmitter comprises a laser diode, and an aspheric focusing lens, a cylindrical lens and a plano-convex cylindrical lens which are sequentially arranged along the optical path of the laser diode; one end face of the aspheric focusing lens is an aspheric surface, light emitted by the laser diode is focused through the aspheric focusing lens, and the focused light beam is dispersed into uniform linear laser by the cylindrical lens and the plano-convex cylindrical lens.
8. The inspection device of any one of claims 1 to 7, wherein the inspection assembly further comprises a vision recognition module disposed on the support and opposite to the positioning assembly, the vision recognition module being configured to capture an image of the assembly, and a processor configured to determine the mounting accuracy of the assembly relative to the housing based on the relative positions of the reference marker and the laser reference line in the image.
9. The detecting device according to claim 8, wherein the detecting device further comprises an adjusting assembly, the adjusting assembly comprises a rail disposed on the supporting member, a first driving member disposed on the rail, and a second driving member disposed on the first driving member, the laser emitter is connected to the second driving member; the processor is further used for controlling the adjusting component to adjust the position of the laser emitter according to the position of the reference marker in the image acquired by the visual identification module.
10. A detection method applied to the detection device according to claim 8 or 9, for detecting the mounting accuracy of an assembly of an electronic device, the electronic device comprising a housing and an assembly provided in the housing, the assembly being provided with at least two light-transmitting portions, the light-transmitting portions being provided corresponding to one camera, and the light-transmitting portions being reference markers of the assembly; the detection method comprises the following steps:
projecting a laser reference line to the assembly;
acquiring an image comprising the reference marker and the laser reference line;
determining a distance or angular relationship between the reference marker and the laser reference line from the image; and
and determining the installation accuracy of the assembly relative to the shell according to the distance or the angle relation.
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| CN114413758B (en) * | 2022-01-24 | 2023-06-09 | 中国工程物理研究院机械制造工艺研究所 | Laser transmission positioning accuracy detection assembly |
| CN115144399B (en) * | 2022-08-30 | 2023-01-13 | 吉林省信息技术研究所 | Assembly quality detection method and device based on machine vision |
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