CN112255759B - Camera automatic focusing method, device and system - Google Patents
Camera automatic focusing method, device and system Download PDFInfo
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- CN112255759B CN112255759B CN202011110135.5A CN202011110135A CN112255759B CN 112255759 B CN112255759 B CN 112255759B CN 202011110135 A CN202011110135 A CN 202011110135A CN 112255759 B CN112255759 B CN 112255759B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/282—Autofocusing of zoom lenses
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The application relates to a camera automatic focusing method, a device and a system, wherein the method comprises the following steps: acquiring a thickness value of a battery plate set; determining a distance value of the camera movement according to the thickness value; when roll up the needle certainly the camera is shot for the first time roll up the core the moment when rotatory first preset angle, control removal module drives the camera along with the opposite direction of shooting direction of camera removes distance value, first preset angle is whole week, makes the camera is shot focus value when rolling up the core is all the time for best shooting focus value of camera. This application has realized that battery pole piece dislocation detects camera uses the book needle to coil the in-process auto focus that forms roll core as the spool at battery pole piece group, avoids producing because of the number of turns that roll core was convoluteed is more and more, and the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
Description
Technical Field
The invention relates to the technical field of lithium ion power battery manufacturing, in particular to an automatic focusing method, device and system of a camera.
Background
With the popularization of various electronic products, lithium ion batteries are widely used in smart phones, notebook computers, tablet computers, electric vehicles, electric bicycles, and other portable electronic products due to their advantages of small size, light weight, and large capacity. The winding process of the lithium ion battery has high production efficiency and low production cost, and is widely adopted by manufacturers.
The lithium ion battery winding mainly winds a battery pole piece group comprising a positive pole piece, a diaphragm and a negative pole piece by a winding machine to form a winding core. In order to ensure the quality of the lithium ion battery, usually, during the winding process of the lithium ion battery, a camera is used to take pictures to detect whether the wound positive plate, negative plate and diaphragm are misaligned. However, the camera is fixedly arranged on the winding station after being assembled and debugged, the winding core is thicker and thicker along with more and more winding turns, and the distance between the outer surface of the winding core and the camera is smaller and smaller, so that the pictures shot by the camera are blurred, and the detection accuracy is influenced; especially, when a button cell is wound, the situation that the camera cannot focus or the focusing effect is poor due to small depth of field may occur, so that the pictures shot by the camera are blurred, and the detection accuracy is seriously affected.
Disclosure of Invention
Therefore, it is necessary to provide an automatic focusing method, device and system for a camera to control the camera to automatically move and focus according to the thickness value of the winding core, so as to ensure the definition of the camera shooting the picture of the winding core, and improve the accuracy of the dislocation detection of the battery pole piece.
The first aspect of the application provides an automatic focusing method for a camera, which is used for controlling automatic focusing of a battery pole piece dislocation detection camera in a process that a battery pole piece group is wound by taking a winding needle as a winding shaft to form a winding core, and the method comprises the following steps:
obtaining the thickness value of the battery plate group;
determining a distance value of the camera movement according to the thickness value;
when roll up the needle certainly the camera is shot for the first time roll up the first angle of presetting of the time of core, control removes the module and drives the camera is along with the opposite direction of shooting direction of camera removes distance value, first angle of presetting is whole week.
In the camera auto-focusing method in the above embodiment, the thickness value of the battery pole piece set is first obtained, and before the battery pole piece set is completely set and ready to be wound around the winding pin as the winding shaft, the initial position of the battery pole piece dislocation detection camera is set, so that the focal length value when the camera shoots the winding core is the best shooting focal length value of the camera, that is, the camera can shoot a clear picture when the camera shoots the winding core at the best shooting focal length value. When the roll needle certainly the camera is first shot when rolling up the first angle of predetermineeing of the moment of core, control removal module drives the camera is along with the opposite direction of shooting direction of camera removes the distance value makes camera shooting focus value when rolling up the core is all the time for the best shooting focus value of camera. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the more and more number of turns that roll core was coiled, the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
In one embodiment, said determining a distance value of said camera movement from said thickness value comprises: and determining the distance value moved by the camera to be Nx d, wherein N is a preset integer, and d is the thickness value of the battery pole piece group. Can set up and roll up needle at every turn and rotate predetermined whole several weeks after, all control battery pole piece dislocation detection camera along with the opposite direction of shooting direction of camera removes distance value for at the battery pole piece group with roll up the needle and coil the in-process that forms roll core as the spool winding, the camera is shot focus value when rolling up the core is all the time for the best shooting focus value of camera.
In one embodiment, when the winding needle rotates by a first preset angle from the moment when the camera shoots the winding core for the first time, controlling the moving module to drive the camera to move the distance value in a direction opposite to the shooting direction of the camera includes:
when the winding needle rotates for N cycles from the moment when the camera shoots the winding core for the first time, the moving module is controlled to drive the camera to move in the direction opposite to the shooting direction of the camera by the distance value. The camera is used for shooting the core, the focal distance value is always the best shooting focal distance value of the camera, and the automatic focusing of the battery pole piece dislocation detection camera is controlled in the process that the battery pole piece group is wound by taking the winding needle as the winding shaft to form the core.
In one embodiment, the controlling the moving module to move the camera by the distance value in a direction opposite to a shooting direction of the camera includes:
and controlling the linear motor to act, and driving the camera positioned on the guide rail of the linear motor to move the distance value along the direction opposite to the shooting direction of the camera, wherein the extending direction of the guide rail is parallel to the shooting direction of the camera.
In one embodiment, the camera auto-focusing method further includes:
when the book needle certainly the camera is first shot when the second of turning round is preset the angle from the moment of rolling up the core, control remove the module and drive the camera edge with the same direction of shooting direction of camera removes, makes the camera returns to first shooting the position of rolling up the core, the second is preset the angle and is greater than first preset the angle. And controlling the automatic focusing of the battery pole piece dislocation detection camera in the process of winding the battery pole piece group by taking the winding needle as the reel to form a winding core in preparation for the next time.
In one embodiment, after the controlling the moving module drives the camera to move the distance value in a direction opposite to a shooting direction of the camera, the method includes:
controlling the camera to shoot the winding core to obtain a real-time winding picture;
acquiring a real-time winding pole piece distance value according to the real-time winding picture, wherein the winding pole piece distance value comprises a distance value between adjacent diaphragms and positive pole pieces, a distance value between adjacent diaphragms and negative pole pieces and a distance value between adjacent positive pole pieces and negative pole pieces;
and judging whether the battery pole piece in the winding core is dislocated or not according to the real-time winding pole piece distance value.
The second aspect of the present application provides an automatic focusing method for a camera, which is used for controlling automatic focusing of a battery pole piece dislocation detection camera in a process of winding a battery pole piece group by using a winding needle as a winding shaft to form a winding core, and the method includes:
acquiring a thickness value of the battery plate group and an initial focal length value when the camera shoots the winding core for the first time;
determining a distance value of the camera movement according to the thickness value;
when the book needle certainly the camera is first shot when rolling up the first angle of predetermineeing of the rotation of the moment of core, control removal module drives the camera along with the opposite direction of shooting direction of camera removes distance value makes the camera is shot focus value when rolling up the core with the difference of initial focus value is located predetermined precision range, first angle of predetermineeing is whole week.
In the camera automatic focusing method in the above embodiment, first, a thickness value of a battery plate group and an initial focal length value of a battery plate dislocation detection camera when the battery plate dislocation detection camera initially shoots a roll core are obtained, then, a distance value of movement of the camera is determined according to the obtained thickness value, when the roll pin rotates by a first preset angle from a moment when the camera initially shoots the roll core, a control movement module drives the camera to move the distance value in a direction opposite to a shooting direction of the camera, so that a difference value between the focal length value of the camera when the camera shoots the roll core and the initial focal length value is within a preset precision range, and the first preset angle is a whole number of weeks. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the more and more number of turns that roll core was coiled, the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
The third aspect of the application provides a camera automatic focusing device for control battery pole piece dislocation detects the camera and uses the book needle to coil the in-process automatic focusing that forms a roll core as the spool at battery pole piece group, the device includes:
the thickness value acquisition module is used for acquiring the thickness value of the battery plate set;
the distance value determining module is used for determining the distance value of the camera movement according to the thickness value;
the automatic focusing module is used for working as the roll needle certainly the camera is shot for the first time when the first angle of presetting of rotation is started to the moment of rolling up the core, control removes the module and drives the camera along with the opposite direction of shooting direction of camera removes distance value, first angle of presetting is whole week.
In the above-mentioned embodiment of the camera auto-focusing device, first, before the battery pole piece group is completely set and is ready to be wound by using the winding pin as the winding shaft, the initial position of the battery pole piece dislocation detection camera is set, so that the focal length value when the camera shoots the winding core is the best shooting focal length value of the camera, that is, the camera can shoot a clear picture when the camera shoots the winding core at the best shooting focal length value. Then, acquiring a thickness value of the battery pole piece group based on a thickness value acquisition module; utilize distance value to confirm module according to the thickness value who acquires the distance value that the camera removed, work as the book needle certainly the camera is first shot when rolling up the first angle of predetermineeing of the moment of core, the module is removed in the control of automatic focusing module control drive the camera along with the opposite direction of shooting direction of camera removes the distance value, first predetermined angle is whole week, makes the camera is shot focus value when rolling up the core is the best shooting focus value of camera all the time. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the number of turns that the book core was coiled is more and more, the picture that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
The fourth aspect of the present application provides a camera auto focus system for control battery pole piece dislocation detects the camera and uses the book needle to coil the in-process auto focus that forms a roll core as the spool at battery pole piece group, the device includes:
a moving module;
a controller connected with the mobile module and configured to acquire the thickness value of the battery plate group and determine the distance value of the camera movement according to the thickness value, an
When the book needle certainly camera first shoot when rolling up the first predetermined angle of rotation from the moment of core, control remove the module and drive the camera along with the opposite direction of shooting direction of camera removes distance value, first predetermined angle is whole week.
In the camera automatic focusing system in the above embodiment, the controller obtains the thickness value of the battery plate group, and determines the distance value that the camera moves according to the thickness value, and when the winding pin rotates a first preset angle from the moment when the camera takes the winding core for the first time, the controller controls the moving module to drive the camera to move in the direction opposite to the shooting direction of the camera, the first preset angle is a whole number of weeks, so that the focal length value when the camera shoots the winding core is always the best shooting focal length value of the camera. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the more and more number of turns that roll core was coiled, the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
In one embodiment, the moving module includes:
the linear motor is connected with the controller and comprises a guide rail, and the extending direction of the guide rail is parallel to the shooting direction of the camera;
the sliding block is arranged on the guide rail in a sliding manner; the camera is fixedly arranged on the sliding block;
when the linear motor acts after receiving the instruction of the controller, the sliding block is controlled to drive the camera to move the distance value along the direction opposite to the shooting direction of the camera.
In one embodiment, the camera auto-focus system further comprises:
the bright field light source is arranged on one side of the scroll needle close to the camera;
the backlight source is arranged on one side, far away from the camera, of the winding needle.
In the camera automatic focusing system in the above embodiment, the bright view field light source is arranged on one side of the winding needle close to the battery pole piece dislocation detection camera, the winding needle is far away from the backlight source arranged on one side of the camera, and the bright view field light source and the backlight source are mutually matched, so that the battery pole piece dislocation detection camera can shoot clear pictures in the whole process of winding the battery pole piece group by taking the winding needle as a winding shaft, and the influence on the definition of the shot pictures caused by insufficient light of the shooting view field is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain drawings of other embodiments based on these drawings without any inventive work.
Fig. 1 is a schematic flowchart of an auto-focusing method of a camera according to a first embodiment of the present application;
fig. 2 is a schematic flowchart of an auto-focusing method of a camera according to a second embodiment of the present application;
fig. 3 is a schematic flowchart of an auto-focusing method of a camera according to a third embodiment of the present application;
fig. 4 is a schematic flowchart of an auto-focusing method of a camera according to a fourth embodiment of the present application;
fig. 5 is a schematic flowchart of an auto-focusing method of a camera according to a fifth embodiment of the present application;
fig. 6 is a schematic flowchart of an auto-focusing method of a camera according to a sixth embodiment of the present application;
fig. 7 is a block diagram of an auto-focusing device of a camera according to a seventh embodiment of the present application;
fig. 8 is a schematic structural diagram of an auto-focusing system of a camera provided in an eighth embodiment of the present application;
fig. 9 is a schematic diagram of an architecture of an auto-focusing system of a camera according to a ninth embodiment of the present application;
fig. 10 is a schematic view of an application scenario of an auto-focusing system of a camera provided in a tenth embodiment of the present application.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Where the terms "comprising," "having," and "including" are used herein, another component can be added unless an explicit limitation is used, such as "only," "consisting of … …," and the like. Unless mentioned to the contrary, terms in the singular may include the plural and are not to be construed as being one in number.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application.
Throughout the description of the present application, it is to be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection may be direct or indirect via an intermediate medium, and the connection may be internal to the two components. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
Referring to fig. 1, in an embodiment of the present application, an auto-focusing method of a camera is provided for controlling auto-focusing of a battery pole piece misalignment detection camera in a process of winding a battery pole piece group around a winding pin as a winding shaft to form a winding core, the method includes the following steps:
For example, when a battery cell winding station winds a battery electrode sheet assembly having a four-layer structure including a negative electrode sheet, a separator, a positive electrode sheet, and a separator, which are sequentially stacked, the winding effect needs to be detected in real time, for example, whether the electrode sheet is misaligned in a winding core is determined by detecting whether a distance value between the separator and the negative electrode sheet or a distance value between the negative electrode sheet and the positive electrode sheet meets a requirement. Before the battery pole piece group is arranged and is ready to be wound by taking the winding needle as a reel, the thickness value of the battery pole piece group can be obtained by a preset thickness value measuring device, and the manually set thickness value of the battery pole piece group can also be obtained. For example, if the thickness values of the negative electrode sheet, the separator, the positive electrode sheet and the separator sequentially stacked in the battery electrode sheet group are d1, d2, d3 and d2, respectively, the thickness value d of the battery electrode sheet group can be obtained as d1+2d2+ d3.
And step 204, determining the distance value of the camera movement according to the thickness value.
As an example, the obtained product of the thickness value of the battery plate group and a preset integer may be used as the distance value moved by the camera, that is, it is determined that the distance value moved by the camera is N × d, where N is the preset integer, d is the thickness value of the battery plate group, and N may be set to an integer within 5. For example, the distance value of the movement of the camera may be set to be equal to the thickness value of the battery pole piece set, so that when the battery pole piece set is wound around the winding needle as the winding shaft to form the winding core, the battery pole piece dislocation detection camera moves the distance value in the direction opposite to the shooting direction every time the winding core rotates by one turn, so that the winding core is always located at the best focal distance value of the battery pole piece dislocation detection camera for shooting the battery cell. In other embodiments of the present application, the distance value that can set up the camera to move is the twice of the thickness value of battery plate group, namely, every two circles of rotation of roll core, and battery plate dislocation detection camera moves along the opposite direction of shooting direction the distance value to make roll core be located the best focus value that battery plate dislocation detection camera shot battery electricity core all the time.
And step 206, when the winding needle rotates by a first preset angle from the moment when the camera shoots the winding core for the first time, controlling a moving module to drive the camera to move by the distance value along the direction opposite to the shooting direction of the camera.
As an example, before the battery pole piece group is completely set and ready to be wound by taking the winding needle as the winding shaft, the initial position of the battery pole piece misalignment detection camera is set, so that the focal length value when the camera shoots the winding core is the best shooting focal length value of the camera, that is, the camera can shoot a clear picture when the camera shoots the winding core at the best shooting focal length value. When the roll up the needle certainly the camera is first shot when the first angle of predetermineeing of the moment of rolling up the core, control removes the module and drives the camera along with the opposite direction of shooting direction of camera removes distance value makes camera shooting focus value when rolling up the core is all the time for best shooting focus value of camera to realize the auto focus of camera shooting in-process.
Further, referring to fig. 2, in an embodiment of the application, when the winding needle rotates by a first preset angle from a time when the camera first photographs the winding core, controlling a moving module to drive the camera to move the distance value in a direction opposite to a photographing direction of the camera includes:
As an example, please refer to fig. 2 continuously, the focal length value of the camera may be debugged in advance during the installation process of the battery pole piece misalignment detection camera, so that when the battery pole piece set is wound around the winding pin as the winding shaft for a preset integer of cycles, the outer surface of the winding core is located at the position of the optimal focal length of the battery pole piece misalignment detection camera; and set up battery pole piece dislocation detection camera on the mobile device, take for the first time from battery pole piece dislocation detection camera when rolling up the needle roll up the moment of core and play rotation when predetermineeing the integer week, control the removal module drives the camera along with the opposite direction removal of shooting direction of camera the distance value makes the camera is taken focus value during rolling up the core is all the time for the best shooting focus value of camera to use the book needle to coil the in-process control battery pole piece dislocation detection camera auto focus who forms the core as the spool at battery pole piece group.
Further, referring to fig. 3, in an embodiment of the application, when the winding needle rotates by a first preset angle from a time when the camera first photographs the winding core, controlling a moving module to drive the camera to move the distance value in a direction opposite to a photographing direction of the camera includes:
As an example, a guide rail may be provided for a battery pole piece misalignment detection camera, and the extending direction of the guide rail may be set to be parallel to the shooting direction of the camera. Can with battery pole piece dislocation detection camera set up in on the guide rail, at the in-process of battery pole piece dislocation detection camera installation, debug the focus value of camera in advance for when the battery pole piece group uses the book needle to wind the book and predetermine integer week, the book core that forms is located the position of the best focus of battery pole piece dislocation detection camera. When rolling up the needle and taking for the first time from battery pole piece dislocation detection camera the moment of rolling up the core plays rotatory N week time, and N is for predetermineeing the integer, controls linear electric motor action to drive and be located linear electric motor's guide rail the camera along with the opposite direction of shooting direction of camera removes distance value makes camera shooting focus value when rolling up the core is all the time for the best shooting focus value of camera to use the roll needle to roll up at battery pole piece group and form the in-process control battery pole piece dislocation detection camera auto focus of rolling up the core as the spool winding.
Further, referring to fig. 4, in an embodiment of the present application, the method for automatically focusing by a camera further includes:
As an example, please refer to fig. 4 again, when the winding pin rotates by a second preset angle from the moment when the camera shoots the winding core for the first time, the moving module is controlled to drive the camera to move in the same direction as the shooting direction of the camera, so that the camera returns to the position where the winding core is shot for the first time, so as to prepare for auto-focusing in the process of winding the battery plate assembly by using the winding pin as the winding shaft to form the winding core for the next time.
Further, referring to fig. 5, in an embodiment of the present application, after the controlling the moving module drives the camera to move the distance value along a direction opposite to a shooting direction of the camera, the method includes:
and 2076, judging whether the battery pole piece in the winding core is dislocated or not according to the distance value of the real-time winding pole piece.
As an example, the battery pole piece misalignment detection camera may be a Charge Coupled Device (CCD) camera, and in the process of winding the battery pole piece group around the winding needle as the winding shaft to form the winding core, the CCD camera may be set to shoot the winding core to obtain a clear real-time winding picture every preset integral number of rotations of the winding core, and obtain a real-time winding pole piece distance value according to the real-time winding picture, where the winding pole piece distance value includes a distance value between an adjacent diaphragm and a positive pole piece, a distance value between an adjacent diaphragm and a negative pole piece, and a distance value between an adjacent positive pole piece and a negative pole piece; and judging whether the battery pole piece in the winding core is misplaced or not according to the real-time winding pole piece distance value. For example, the preset distance threshold may be set to include a distance threshold between an adjacent separator and a positive electrode plate, a distance threshold between an adjacent separator and a negative electrode plate, and a distance threshold between an adjacent positive electrode plate and a negative electrode plate. And when one or more of the distance value between the adjacent diaphragm and the positive plate, the distance value between the adjacent diaphragm and the negative plate and the distance value between the adjacent positive plate and the negative plate are greater than or equal to the corresponding distance threshold value, judging that the battery pole piece is dislocated in the winding core. In other embodiments of this application, if judge produce the battery pole piece dislocation in rolling up the core, can control preset alarm device and carry out preset alarm action, for example send out one or more in warning sound, warning light or the warning SMS etc. to remind relevant staff to take remedial action in time, avoid further extravagant material in unqualified electric core, increase unnecessary economic loss.
Further, referring to fig. 6, in an embodiment of the present application, an auto-focusing method of a camera is provided for controlling auto-focusing of a battery pole piece misalignment detection camera in a process of winding a battery pole piece group around a winding pin as a winding shaft to form a winding core, where the method includes:
Specifically, please continue to refer to fig. 6, first obtain the thickness value of the battery plate set and the initial focal length value of the battery plate dislocation detection camera when the core is initially taken, then determine the distance value that the camera moves according to the obtained thickness value, and when the winding pin rotates by a first preset angle from the moment when the core is initially taken by the camera, control the moving module to drive the camera to move the distance value in the direction opposite to the taking direction of the camera, so that the difference between the focal length value of the camera when the core is taken and the initial focal length value is within the preset precision range, where the first preset angle is a whole number of weeks. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the more and more number of turns that roll core was coiled, the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
It should be understood that although the various steps in the flowcharts of fig. 1-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, although at least some of the steps in fig. 1-6 may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, the order of performing the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.
Further, please refer to fig. 7, in an embodiment of the present application, an auto-focusing device 10 of a camera is provided for controlling an auto-focusing of a battery pole piece misalignment detection camera in a process of winding a battery pole piece group by using a winding pin as a winding shaft to form a winding core, where the camera auto-focusing device 10 includes a thickness value obtaining module 12, a distance value determining module 14, and an auto-focusing module 16, and the thickness value obtaining module 12 is configured to obtain a thickness value of the battery pole piece group; the distance value determining module 14 is used for determining the distance value of the camera movement according to the thickness value; the automatic focusing module 16 is used for controlling the moving module to drive the camera to move along the direction opposite to the shooting direction of the camera by a distance value when the winding needle rotates a first preset angle from the moment of the camera for the first time for shooting the winding core, and the first preset angle is a whole number of weeks.
As an example, please continue to refer to fig. 7, first, the thickness value of the battery plate set is obtained based on the thickness value obtaining module 12; then, a distance value determining module 14 is used for determining the distance value moved by the camera according to the acquired thickness value, when the winding pin rotates by a first preset angle from the moment when the camera shoots the winding core for the first time, an automatic focusing module 16 controls a moving module to drive the camera to move by the distance value along the direction opposite to the shooting direction of the camera, and the first preset angle is an integral number of weeks. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the more and more number of turns that roll core was coiled, the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
Further, referring to fig. 8, in an embodiment of the present application, an auto-focusing system 20 of a camera is provided for controlling auto-focusing of a battery pole piece misalignment detection camera in a process of winding a battery pole piece group around a winding pin as a winding shaft to form a winding core, the apparatus includes a moving module 22 and a controller 24, and the controller 24 is connected to the moving module 22; wherein, controller 24 is configured to obtain the thickness value of battery plate group, and confirm according to the thickness value the distance value that the camera removed, and when the book needle from the camera was shot for the first time roll up the core when rotatory first preset angle, control the removal module drives the camera moves along with the shooting direction of camera is opposite direction the distance value, first preset angle is whole week.
As an example, please refer to fig. 8, in the camera auto-focusing system in the above embodiment, the controller 24 obtains a thickness value of a battery plate set, and determines a distance value of the camera movement according to the thickness value, and when the winding pin rotates by a first preset angle from a time point when the camera initially photographs the winding core, the controller 24 controls the moving module 22 to drive the camera (not shown in fig. 8) to move the distance value in a direction opposite to a photographing direction of the camera, where the first preset angle is a whole number of weeks, so that a focal length value when the camera photographs the winding core is always the best photographing focal length value of the camera. Thereby realized battery pole piece dislocation detection camera and coiled the in-process auto focus that forms the book core at battery pole piece group with rolling up the needle as the spool, avoided producing because of the more and more number of turns that roll core was coiled, the photo that leads to the camera to shoot is fuzzy and influences the condition of the accuracy that detects.
Further, referring to fig. 9 and 10, in an embodiment of the present application, the moving module 22 includes a linear motor 221 and a slider 281, the linear motor 221 is connected to the controller 24, the linear motor 221 includes a guide rail 28, and an extending direction of the guide rail 28 is parallel to a shooting direction of the battery pole piece misalignment detection camera 201; the slide block 281 is arranged on the guide rail 28 in a sliding way; the battery pole piece misalignment detection camera 201 is fixedly arranged on the slider 281, and when the linear motor 221 receives an instruction from the controller 24, the linear motor acts to control the slider 281 to drive the battery pole piece misalignment detection camera 201 to move by the distance value in a direction opposite to the shooting direction of the battery pole piece misalignment detection camera 201.
In other embodiments of the present application, the moving module 22 may further include other linkage components, for example, one or more of a gear, a cam, a lead screw lifter or a connecting rod, etc., for moving along with the motor, so as to drive the battery pole piece misalignment detection camera 201 to move along a preset direction, thereby implementing automatic focusing of the battery pole piece misalignment detection camera 201.
For example, referring to fig. 9 and fig. 10, in an embodiment of the present application, the camera auto-focusing system further includes a backlight 291 and a bright-field light source 292, where the bright-field light source 292 is disposed on a side of the winding core 202 close to the battery pole piece misalignment detection camera 201; the backlight 291 is disposed on the side of the winding core 202 away from the battery pole piece misalignment detection camera 201. Set up bright field light source 292 through the one side that is close to battery pole piece dislocation detection camera 201 at book core 202 to one side of keeping away from battery pole piece dislocation detection camera 201 at book core 202 sets up backlight 291, bright field light source 292 and backlight 291 mutually support, make at the battery pole piece group with the book needle at the whole in-process that the spool winding formed book core 202, clear picture can all be shot to battery pole piece dislocation detection camera 201, avoid influencing the definition of shooting the picture because of shooting the not enough light in field.
Further, in an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the method described in any of the embodiments of the present application.
For specific limitations of the camera autofocus device or system, reference may be made to the above limitations of the camera autofocus method, which are not described herein again.
The modules in the camera automatic focusing method can be wholly or partially realized by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In an embodiment of the present application, a computer-readable storage medium is provided, on which a computer program is stored, which, when being executed by a processor, carries out the steps of any of the above-mentioned embodiments of the present application.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct Rambus Dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM), among others.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.
Claims (11)
1. The camera automatic focusing method is characterized by being used for controlling automatic focusing of a battery pole piece dislocation detection camera in the process that a battery pole piece group is wound by taking a winding needle as a winding shaft to form a winding core, and comprises the following steps:
obtaining the thickness value of the battery plate group;
determining a distance value of the camera movement according to the thickness value; the distance value is N x d, wherein N is a preset integer, and d is a thickness value of the battery plate group;
when the book needle certainly camera first shoot when rolling up the first predetermined angle of rotation from the moment of core, the control removes the module and drives the camera along with the opposite direction of shooting direction of camera removes distance value, first predetermined angle is whole week.
2. The method of claim 1, wherein N ≦ 5.
3. The method of claim 2, wherein controlling a moving module to move the camera by the distance value in a direction opposite to a shooting direction of the camera when the winding needle rotates by a first preset angle from a moment when the camera shoots the winding core for the first time comprises:
when the winding needle rotates for N cycles from the moment when the camera shoots the winding core for the first time, the control moving module drives the camera to move in the direction opposite to the shooting direction of the camera by the distance value.
4. The method of claim 3, wherein controlling the movement module to move the camera by the distance value in a direction opposite to a shooting direction of the camera comprises:
and controlling the linear motor to act, and driving the camera positioned on the guide rail of the linear motor to move the distance value along the direction opposite to the shooting direction of the camera, wherein the extending direction of the guide rail is parallel to the shooting direction of the camera.
5. The method according to any one of claims 1-4, further comprising:
when the book needle certainly the camera is first shot when the second of turning round is preset the angle from the moment of rolling up the core, control remove the module and drive the camera edge with the same direction of shooting direction of camera removes, makes the camera returns to first shooting the position of rolling up the core, the second is preset the angle and is greater than first preset the angle.
6. The method according to any one of claims 1 to 4, wherein after the controlling the moving module moves the camera by the distance value in a direction opposite to a shooting direction of the camera, the method comprises:
controlling the camera to shoot the winding core to obtain a real-time winding picture;
acquiring a real-time winding pole piece distance value according to the real-time winding picture, wherein the winding pole piece distance value comprises a distance value between adjacent diaphragms and positive pole pieces, a distance value between adjacent diaphragms and negative pole pieces and a distance value between adjacent positive pole pieces and negative pole pieces;
and judging whether the battery pole piece in the winding core is dislocated or not according to the real-time winding pole piece distance value.
7. The automatic focusing method of the camera is characterized by being used for controlling the automatic focusing of the battery pole piece dislocation detection camera in the process that a battery pole piece group is wound by taking a winding needle as a winding shaft to form a winding core, and comprises the following steps:
acquiring a thickness value of the battery plate group and an initial focal length value when the camera shoots the winding core for the first time;
determining a distance value of the camera movement according to the thickness value; the distance value is N x d, wherein N is a preset integer, and d is a thickness value of the battery plate group;
when the book needle certainly the camera is first shot when rolling up the first angle of predetermineeing of the rotation of the moment of core, control removal module drives the camera along with the opposite direction of shooting direction of camera removes distance value makes the camera is shot focus value when rolling up the core with the difference of initial focus value is located predetermined precision range, first angle of predetermineeing is whole week.
8. The utility model provides a camera automatic focusing device (10), its characterized in that for controlling battery pole piece dislocation detection camera is at battery pole piece group and uses the book needle to wind the in-process automatic focusing that forms the book core as the spool, camera automatic focusing device (10) include:
the thickness value acquisition module (12) is used for acquiring the thickness value of the battery pole piece set;
a distance value determination module (14) for determining a distance value of the camera movement from the thickness value; the distance value is N x d, wherein N is a preset integer, and d is a thickness value of the battery plate group;
the automatic focusing module (16) is used for controlling the moving module to drive the camera to move along the direction opposite to the shooting direction of the camera when the winding needle rotates a first preset angle from the moment of the camera for the first time for shooting the winding core, and the first preset angle is a whole number of weeks.
9. A camera automatic focusing system (20) is used for controlling a battery pole piece dislocation detection camera to automatically focus in the process that a battery pole piece group is wound by taking a winding needle as a winding shaft to form a winding core (202), and the camera automatic focusing system (20) comprises:
a moving module (22);
a controller (24) coupled to the movement module (22) and configured to:
acquiring a thickness value of the battery plate group, and determining a moving distance value of the camera (201) according to the thickness value, wherein the distance value is Nx d, N is a preset integer, and d is the thickness value of the battery plate group; and
when the book needle certainly camera (201) first shoot when rolling up the first preset angle of rotation at the moment of core (202), control remove module (22) drive camera (201) along with camera (201) shoot the opposite direction of direction remove the distance value, first preset angle is whole week.
10. The camera autofocus system (20) of claim 9, wherein the movement module (22) comprises:
a linear motor (221) connected to the controller (24), the linear motor (221) including a guide rail (28), an extending direction of the guide rail (28) being parallel to a shooting direction of the camera (201);
a slide block (281), wherein the slide block (281) is arranged on the guide rail (28) in a sliding way; the camera (201) is fixedly arranged on the sliding block (281);
when the linear motor (221) acts after receiving the instruction of the controller (24), the slider (281) is controlled to drive the camera (201) to move the distance value along the direction opposite to the shooting direction of the camera (201).
11. The camera autofocus system (20) of claim 9 or 10, further comprising:
a backlight (291) arranged on the side of the winding core (202) far away from the camera (201);
a bright field light source (292) disposed on a side of the winding core (202) proximate to the camera (201).
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| CN114441545A (en) * | 2022-03-14 | 2022-05-06 | 无锡职业技术学院 | Height-adaptive winding visual detection platform and method |
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| JP2005107213A (en) * | 2003-09-30 | 2005-04-21 | Olympus Corp | Automatic focusing device for camera |
| US9532041B2 (en) * | 2014-07-11 | 2016-12-27 | Intel Corporation | Method and system for automatic focus with self-calibration |
| JP6246684B2 (en) * | 2014-09-08 | 2017-12-13 | Ckd株式会社 | Inspection device and winding device |
| CN208905087U (en) * | 2018-10-18 | 2019-05-24 | 广东德尔智慧工厂科技有限公司 | A kind of device of lithium electrode piece burr detection auto-focusing |
| CN111735825A (en) * | 2020-08-19 | 2020-10-02 | 深圳市中钞科信金融科技有限公司 | Pole piece edge detection device and detection method |
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