CN116342593B - Pole piece detection method, device, equipment and medium - Google Patents

Pole piece detection method, device, equipment and medium Download PDF

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Publication number
CN116342593B
CN116342593B CN202310600120.4A CN202310600120A CN116342593B CN 116342593 B CN116342593 B CN 116342593B CN 202310600120 A CN202310600120 A CN 202310600120A CN 116342593 B CN116342593 B CN 116342593B
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China
Prior art keywords
pole piece
image
size
detected
value
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CN202310600120.4A
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Chinese (zh)
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CN116342593A (en
Inventor
王永鹏
鲍亚旗
郭召
朱梓瑞
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Jiangsu Contemporary Amperex Technology Ltd
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Jiangsu Contemporary Amperex Technology Ltd
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Priority to CN202310600120.4A priority Critical patent/CN116342593B/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/002—Diagnosis, testing or measuring for television systems or their details for television cameras
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30148—Semiconductor; IC; Wafer
    • 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

Abstract

The application discloses a method, a device, equipment and a medium for detecting a pole piece. By applying the technical scheme of the embodiment of the application, before the polar plate is subjected to image detection, the camera device can be tested whether the detection condition is met by using a mode of detecting whether the size of the specimen area on the photographing roller meets the preset size. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided. And further, the problems that the pole piece is not abnormal but the detection result of the pole piece is abnormal in the related technology are solved.

Description

Pole piece detection method, device, equipment and medium
Technical Field
The application relates to equipment detection technology, in particular to a method, a device, equipment and a medium for detecting a pole piece.
Background
With the development of science and technology, more and more electric devices can realize operation functions in a manner of bearing batteries. Taking a lithium battery as an example, the lithium battery brings convenience and clean energy to people and brings certain potential safety hazard. Therefore, in order to ensure the safety of the battery manufacturing process, in the related art, it is generally required to perform on-line detection for each process in the lithium battery manufacturing process.
Wherein the pole piece is a component in the structure of the lithium battery. In the related art, in the process of qualified detection of the pole piece, image acquisition is generally performed on the pole piece, and whether the pole piece is deformed, folded and other abnormal conditions are detected in a mode of image feature recognition and the like.
However, in an actual detection scene, the situation that the pole piece itself is not abnormal but the detection result of the pole piece is abnormal often occurs. The problem of unnecessary stopping and interception is easy to occur in the pole piece manufacturing process, and equipment manufacturing resources and labor cost are wasted.
The statements made above merely serve to provide background information related to the present disclosure and may not necessarily constitute prior art.
Disclosure of Invention
The embodiment of the application provides a method, a device, equipment and a medium for detecting a pole piece. Thus, the problems that the pole piece does not have abnormality in the related technology and the detection result of the pole piece is abnormal are alleviated.
According to one aspect of the embodiment of the application, a method for detecting a pole piece is provided, which comprises the following steps:
collecting a photographing roller image comprising a specimen region by using a camera device, wherein the photographing roller carries a first pole piece to be detected; and determining a detection result of the first pole piece to be detected by utilizing the image pickup device aiming at the first image to be detected acquired by the first pole piece to be detected when the size of the specimen region is detected to be in accordance with a preset size. By applying the technical scheme of the embodiment of the application, before the polar plate is subjected to image detection, the camera device can be tested whether the detection condition is met by using a mode of detecting whether the size of the specimen area on the photographing roller meets the preset size. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided. And further, the problems that the pole piece is not abnormal but the detection result of the pole piece is abnormal in the related technology are solved.
Optionally, in another embodiment of the above method according to the present application, detecting that the size of the specimen region corresponds to the preset size includes: identifying a length value and a width value of the specimen region by using an image detection model; consistency comparison is carried out on the length value and the width value and a pre-stored standard size value, wherein the standard size value comprises a standard length value and a standard width value of a sample area; and detecting that the length value and the width value are consistent with the standard size value, and determining that the size of the specimen region accords with the preset size. By applying the technical scheme of the embodiment of the application, the size value corresponding to the sample area image acquired by the image pickup device can be identified by utilizing the image detection model, and as the size of the sample area is fixed, once the fact that the size value of the acquired sample area image is inconsistent with the pre-associated standard size value is detected, the problem that the detection condition is not met by the image pickup device can be judged. And further, the purpose that the acquired image of the imaging device cannot be used as a detection result due to the problems of offset, focusing and the like of the imaging device is avoided.
Optionally, in another embodiment of the above method according to the present application, detecting that the size of the specimen region corresponds to the preset size includes: detecting that the length value and the width value are inconsistent with the standard value, and generating an alarm event for reflecting that the camera device does not meet the detection condition, wherein the alarm event comprises at least one of offset of the camera device and inaccurate focal length of the camera device; and determining that the size of the detected specimen region accords with the preset size. By applying the technical scheme of the embodiment of the application, the size value corresponding to the sample area image acquired by the image pickup device can be identified by utilizing the image detection model, and as the size of the sample area is fixed, once the fact that the size value of the acquired sample area image is inconsistent with the pre-associated standard size value is detected, the problem that the detection condition is not met by the image pickup device can be judged. And further, the purpose that the acquired image of the imaging device cannot be used as a detection result due to the problems of offset, focusing and the like of the imaging device is avoided.
Alternatively, in another embodiment of the above method according to the present application, capturing a photographing roller image including a specimen region with an image capturing device includes: determining that the photographing roller is in an operating state, and collecting a plurality of candidate photographing roller images in a preset time period; selecting a photographing roller image acquired at a preset angle from a plurality of candidate photographing roller images, wherein the preset angle is an angle at which a specimen region and an adjacent region can be acquired, and the adjacent region is a region surrounding the specimen region on the photographing roller. By applying the technical scheme of the embodiment of the application, in order to obtain an accurate identification result, the image pickup device can be controlled to collect a plurality of candidate photographing roller images, and the photographing roller images of adjacent areas with the color difference with the specimen area exceeding a certain threshold value are selected from the plurality of candidate images. It can be appreciated that the two regions have larger chromatic aberration, so that the boundary edge region is more obvious, the model identification efficiency is higher, and the size of the specimen region can be more accurately identified.
Optionally, in another embodiment of the method according to the present application, the second to-be-detected image of the second to-be-detected pole piece is acquired by using the camera device based on the history period; determining that the detection result of the second pole piece to be detected is unqualified based on the second image to be detected; a photographing roller image including a specimen region is acquired by an image pickup device. By applying the technical scheme of the embodiment of the application, before the camera device is tested whether the detection conditions are met by utilizing the mode of judging whether the size detection of the specimen area on the photographing roller meets the preset size, firstly, whether the event of unqualified pole piece detection exists currently or not is monitored, and if so, the detection flow of the camera device is started. Thereby avoiding the problem of influencing the business process caused by unnecessary manual shutdown inspection.
Optionally, in another embodiment of the above method according to the present application, after determining the detection result of the first pole piece to be detected, the method further includes: establishing a mapping relation among a first pole piece to be detected, a corresponding detection result and a corresponding camera device; storing the mapping relation into a preset storage area; and receiving an acquisition instruction sent by the equipment detection system, extracting a mapping relation from a preset storage area, and sending the mapping relation to the equipment detection system. By applying the technical scheme of the embodiment of the application, the detection result of each first pole piece to be detected and the relation of the corresponding camera device can be automatically stored, so that service personnel can conveniently call at any time when the subsequent inquiry is needed.
According to still another aspect of the embodiment of the present application, a device for detecting a pole piece is provided, including: the collecting module is configured to collect a photographing roller image comprising a specimen region by using a camera device, wherein the photographing roller carries a first pole piece to be detected; the detection module is configured to detect that the size of the specimen region accords with a preset size, and determine a detection result of the first pole piece to be detected according to a first image to be detected acquired by the first pole piece to be detected by using the image pickup device. By applying the technical scheme of the embodiment of the application, before the polar plate is subjected to image detection, the camera device can be tested whether the detection condition is met by using a mode of detecting whether the size of the specimen area on the photographing roller meets the preset size. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided. And further, the problems that the pole piece is not abnormal but the detection result of the pole piece is abnormal in the related technology are solved.
According to still another aspect of an embodiment of the present application, there is provided an electronic apparatus including:
a memory for storing executable instructions; and
and the processor is used for executing the executable instructions with the memory so as to finish the operation of the detection method of any pole piece.
According to a further aspect of an embodiment of the present application, there is provided a computer-readable storage medium storing computer-readable instructions that, when executed, perform the operations of the method for detecting a pole piece of any one of the above.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other advantages, features and advantages of the present application more readily apparent.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application.
The application may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic diagram of a method for detecting a pole piece according to an embodiment of the present application;
FIG. 2 is a schematic view of a photographing roller according to an embodiment of the present application;
FIG. 3 is a schematic view of a photographing roller including a specimen region according to an embodiment of the present application;
FIG. 4 is a schematic view of a specimen region provided by an embodiment of the present application;
fig. 5 is a schematic flow chart of a method for detecting a pole piece according to an embodiment of the present application;
FIG. 6 is a schematic diagram of an electronic device according to an embodiment of the application;
FIG. 7 is a schematic diagram of an electronic device according to an embodiment of the present application;
fig. 8 is a schematic diagram of a storage medium according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise.
Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In addition, the technical solutions of the embodiments of the present application may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present application.
It should be noted that, in the embodiment of the present application, all directional indicators (such as up, down, left, right, front, and rear … …) are merely used to explain the relative occlusion positional relationship between the components, the movement situation, and the like under a specific gesture (as shown in the drawings), and if the specific gesture is changed, the directional indicators are correspondingly changed.
A detection method for performing pole pieces according to an exemplary embodiment of the present application is described below with reference to fig. 1 to 5. It should be noted that the following application scenarios are only shown for facilitating understanding of the spirit and principles of the present application, and embodiments of the present application are not limited in this respect. Rather, embodiments of the application may be applied to any scenario where applicable.
In the related art, along with the high-speed development of lithium battery technology, the application of lithium batteries in new energy automobiles is also gradually widespread.
The lithium battery brings convenience and clean energy to people, and brings huge potential safety hazard, and the explosion result of the lithium battery is serious. Therefore, the quality of lithium batteries is also important, and it is also necessary to perform on-line detection for each process in the production process of lithium batteries. Wherein the pole piece is a component in the structure of the lithium battery.
In the related art, in the process of qualified detection of the pole piece, a service person usually manually measures or performs image acquisition on the pole piece to judge whether the pole piece accords with the preparation flow.
In one way, for example for manual measurement, it is often necessary for the service personnel to measure the dimensions of the product using a flexible rule with an accuracy of 0.5 mm. It can be understood that the operation method cannot meet higher requirements, is limited by uncontrollable factors in various aspects such as production operation level, work literacy and the like of staff, and is easy to cause problems such as batch quality risk and unnecessary shutdown interception of the battery cells in the process, and resource and labor cost are wasted.
In another way, for example, regarding the image detection way, whether the pole piece has abnormal situations such as deformation, folding, etc. can be detected by the image feature recognition way. However, in the actual detection scene of the mode, the situation that the pole piece itself is not abnormal but the detection result of the pole piece is abnormal often occurs. The problem of unnecessary stopping and interception is easy to occur in the pole piece manufacturing process, and equipment manufacturing resources and labor cost are wasted.
Therefore, in order to solve the above-mentioned problem, the pole piece itself is not abnormal but the detection result for the pole piece is abnormal.
The embodiment of the application provides a detection method of a pole piece. The method is characterized in that before the polar plate is subjected to image detection, whether the detection condition is met or not is tested on the image pickup device by means of detecting whether the size detection of the specimen area on the photographing roller meets the preset size or not. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided.
In one mode, the application further provides a method, a device, equipment and a medium for detecting the pole piece.
Fig. 1 schematically shows a flow diagram of a method for detecting a pole piece according to an embodiment of the application. As shown in fig. 1, the method includes:
s101, acquiring a photographing roller image comprising a specimen region by using a camera device, wherein the photographing roller is carried with a first pole piece to be detected.
The battery pole piece is the core of the battery, wherein the pole piece is divided into a positive pole piece and a negative pole piece, and the electrification of the battery can be realized through the collocation of the positive pole piece and the negative pole piece. However, in the process of detecting the positive electrode sheet and the negative electrode sheet, the existing technology has lower detection qualification rate, and thus, corresponding influence and loss may be caused to the later processing.
As shown in fig. 2, a photographing roller in an embodiment of the present application is a member having a roller shape or a blade shape, which is generally suitable for use in an image pickup apparatus, a charging apparatus, a transfer apparatus, and the like.
The photographing roller of the embodiment of the application needs to carry one or more first pole pieces to be detected. It can be appreciated that the pole piece to be detected is used for subsequent qualification detection. However, in order to avoid the problem that the image capturing device itself does not meet the detection condition, the image capturing device needs to capture an image of a preset area of the photographing roller, and it is understood that the preset area needs to include at least a specimen area.
In one mode, the specimen area of the photographing roller in the embodiment of the application can be any area with any size, any shape and any color. It can be understood that as long as the size value of the specimen region is known in advance, the size value of the specimen region acquired later and the standard size value known in advance can be subjected to consistency comparison, so that whether the image pickup device currently meets the detection condition or not is determined.
In one mode, as shown in fig. 3, the specimen region according to the embodiment of the present application may be a rectangular parallelepiped. As an example, there may be a certain color difference between the color of the rectangular parallelepiped region and the color of the adjacent region (i.e., the color of the region adjacent to the rectangular parallelepiped on the photographing roller). The boundary outline between the two is more obvious, and the image recognition result is clearer and more accurate.
Optionally, the embodiment of the present application may enable the color difference between the color of the target area and the color of the adjacent area to exceed a preset threshold (for example, black-white). Thus, the purpose that the colors of the two are most obvious can be achieved. The image detection network can clearly detect the outline part of the specimen region, and further accurately identify the length and width values of the specimen region.
In one mode, the embodiment of the application can also acquire the most standard image of the photographing roller when detecting that the photographing roller is in an operating state (namely, when rolling). The plurality of candidate photographing roller images can be collected in a preset time period, and photographing roller images capable of clearly reflecting the specimen region and the adjacent region can be selected.
For example, the preset angle may be the right front of the specimen region, that is, the image acquisition is performed on the right front of the specimen region, so that the image of the photographing roller including the specimen region and the adjacent region can be clearly obtained.
S102, determining a detection result of the first pole piece to be detected by utilizing the image pickup device aiming at the first image to be detected, wherein the size of the detected specimen area accords with the preset size.
In one mode, after the photographing roller image is acquired, the image detection model can be utilized to identify the specimen region in the photographing roller image. For example, as shown in fig. 4, the specimen region obtained by recognition is a rectangular parallelepiped having a length value L and a width value H. Further, the consistency comparison can be performed between the standard size value of the specimen region and the L and H through the pre-stored standard size value.
It will be appreciated that since the photographing roller is fixed, the specimen area present on the photographing roller is also fixed. And therefore should be consistent with standard dimensions whenever it is image-captured and its dimensions are identified. In other words, once the size of the specimen region is detected to be inconsistent with the standard size, it can be determined that the acquired image is not standard enough due to problems such as focusing of the camera, and thus it is determined that the detection condition is not satisfied. The step of detecting the pole piece to be detected is not started by the camera.
In the embodiment of the present application, the apparatus for identifying the size of the specimen region is not specifically limited, and may be, for example, an intelligent apparatus or a server. The intelligent device may be a PC (Personal Computer ), a mobile terminal device with a function of storing an image detection model, such as a smart phone, a tablet computer, a portable computer, and the like.
In addition, the embodiment of the application does not specifically limit the image detection model. For example, convolutional neural networks (Convolutional Neural Networks, CNN) are possible. By way of example, convolutional neural networks are a class of feedforward neural networks (Feedforward Neural Networks) that contain convolutional computations and have a deep structure, which are one of the representative algorithms for deep learning. Convolutional neural networks have the ability to characterize learning (representation learning) and can classify input information in a hierarchical structure with no change. Thanks to the strong characteristic characterization capability of CNN (convolutional neural network) on images, the CNN has remarkable effects in the fields of image classification, target detection, semantic segmentation and the like.
Furthermore, the application can use the image detection model to detect the size information of the standard area in the image of the photographing roller, so as to judge whether the size accords with the preset size. It will be appreciated that if the size corresponds to the preset size, this means that the image capturing apparatus itself has no problems such as offset or focusing. Otherwise, the image acquired by the image pickup device is considered to be out of the standard, so that the problem of false detection caused by subsequent image detection of the out-of-standard image is avoided.
For example, the embodiment of the present application may identify the length value L and the width value H of the specimen region by using an image detection model.
Furthermore, the embodiment of the application can obtain the pre-stored standard size values of the specimen region, namely the standard length value L 'and the standard width value H'. And enter the consistency comparison step:
first case:
and comparing the length value L and the width value H with the standard length value L 'and the standard width value H' in a consistent manner, and if the length value L and the width value H are detected to be consistent with the standard length value L 'and the standard width value H', determining that the size of the specimen region accords with the preset size. And further, the camera device is determined to have no problems such as offset or focusing.
In other words, the embodiment of the application judges that the image pickup device meets the detection condition, further uses the image pickup device to collect the image of the first pole piece to be detected, and determines the detection result of the first pole piece to be detected according to the first image to be detected.
Second case:
and comparing the length value L and the width value H with the standard length value L 'and the standard width value H' in a consistent manner, and if the two are detected to be inconsistent, determining that the size of the specimen region does not accord with the preset size. And further, the problems such as offset or focusing of the image pickup device are determined.
In other words, the embodiment of the application judges that the imaging device does not meet the detection condition, and can not detect the standard image of the pole piece. The false detection problem caused by the abnormality of the acquired image because of the fact that the pole piece is not abnormal is avoided. The embodiment of the application can generate the alarm event for reflecting that the camera device does not meet the detection condition so as to achieve the purpose of notifying service personnel.
As an example, the alert event includes at least one of camera offset, camera focus misalignment.
In summary, the technical scheme of the embodiment of the application is that a photographing roller image comprising a specimen region is acquired by using a camera device, wherein the photographing roller carries a first pole piece to be detected; and determining a detection result of the first pole piece to be detected by utilizing the image pickup device aiming at the first image to be detected acquired by the first pole piece to be detected when the size of the specimen region is detected to be in accordance with a preset size.
The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.
By applying the technical scheme of the embodiment of the application, before the polar plate is subjected to image detection, the camera device can be tested whether the detection condition is met by using a mode of detecting whether the size of the specimen area on the photographing roller meets the preset size. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided. And further, the problems that the pole piece is not abnormal but the detection result of the pole piece is abnormal in the related technology are solved.
Optionally, in another embodiment of the above method according to the present application, detecting that the size of the specimen region corresponds to the preset size includes: identifying a length value and a width value of the specimen region by using an image detection model; consistency comparison is carried out on the length value and the width value and a pre-stored standard size value, wherein the standard size value comprises a standard length value and a standard width value of a sample area; and detecting that the length value and the width value are consistent with the standard size value, and determining that the size of the specimen region accords with the preset size.
By applying the technical scheme of the embodiment of the application, the size value corresponding to the sample area image acquired by the image pickup device can be identified by utilizing the image detection model, and as the size of the sample area is fixed, once the fact that the size value of the acquired sample area image is inconsistent with the pre-associated standard size value is detected, the problem that the detection condition is not met by the image pickup device can be judged. And further, the purpose that the acquired image of the imaging device cannot be used as a detection result due to the problems of offset, focusing and the like of the imaging device is avoided.
Optionally, in another embodiment of the above method according to the present application, detecting that the size of the specimen region corresponds to the preset size includes: detecting that the length value and the width value are inconsistent with the standard value, and generating an alarm event for reflecting that the camera device does not meet the detection condition, wherein the alarm event comprises at least one of offset of the camera device and inaccurate focal length of the camera device; and determining that the size of the detected specimen region accords with the preset size.
By applying the technical scheme of the embodiment of the application, the size value corresponding to the sample area image acquired by the image pickup device can be identified by utilizing the image detection model, and as the size of the sample area is fixed, once the fact that the size value of the acquired sample area image is inconsistent with the pre-associated standard size value is detected, the problem that the detection condition is not met by the image pickup device can be judged. And further, the purpose that the acquired image of the imaging device cannot be used as a detection result due to the problems of offset, focusing and the like of the imaging device is avoided.
Alternatively, in another embodiment of the above method according to the present application, capturing a photographing roller image including a specimen region with an image capturing device includes: determining that the photographing roller is in an operating state, and collecting a plurality of candidate photographing roller images in a preset time period; selecting a photographing roller image acquired at a preset angle from a plurality of candidate photographing roller images, wherein the preset angle is an angle at which a specimen region and an adjacent region can be acquired, and the adjacent region is a region surrounding the specimen region on the photographing roller.
By applying the technical scheme of the embodiment of the application, in order to obtain an accurate identification result, the image pickup device can be controlled to collect a plurality of candidate photographing roller images, and the photographing roller images of adjacent areas with the color difference with the specimen area exceeding a certain threshold value are selected from the plurality of candidate images. It can be appreciated that the two regions have larger chromatic aberration, so that the boundary edge region is more obvious, the model identification efficiency is higher, and the size of the specimen region can be more accurately identified.
Optionally, in another embodiment of the method according to the present application, the second to-be-detected image of the second to-be-detected pole piece is acquired by using the camera device based on the history period; determining that the detection result of the second pole piece to be detected is unqualified based on the second image to be detected; a photographing roller image including a specimen region is acquired by an image pickup device.
By applying the technical scheme of the embodiment of the application, before the camera device is tested whether the detection conditions are met by utilizing the mode of judging whether the size detection of the specimen area on the photographing roller meets the preset size, firstly, whether the event of unqualified pole piece detection exists currently or not is monitored, and if so, the detection flow of the camera device is started. Thereby avoiding the problem of influencing the business process caused by unnecessary manual shutdown inspection.
Optionally, in another embodiment of the above method according to the present application, after determining the detection result of the first pole piece to be detected, the method further includes: establishing a mapping relation among a first pole piece to be detected, a corresponding detection result and a corresponding camera device; storing the mapping relation into a preset storage area; and receiving an acquisition instruction sent by the equipment detection system, extracting a mapping relation from a preset storage area, and sending the mapping relation to the equipment detection system.
By applying the technical scheme of the embodiment of the application, the detection result of each first pole piece to be detected and the relation of the corresponding camera device can be automatically stored, so that service personnel can conveniently call at any time when the subsequent inquiry is needed.
As an example, a specific description is given to a method for detecting a pole piece according to an embodiment of the present application with reference to fig. 5:
and step 1, acquiring a second image to be detected of a second pole piece to be detected by using a camera device in a historical time period.
And step 2, determining that the detection result of the second pole piece to be detected is unqualified based on the second image to be detected.
And 3, determining the photographing roller to be in an operating state, and collecting a plurality of candidate photographing roller images in a preset time period.
The photographing roller carries a first pole piece to be detected.
And 4, selecting a photographing roller image acquired at a preset angle from a plurality of candidate photographing roller images.
The preset angle is an angle capable of collecting a specimen region and an adjacent region, wherein the adjacent region surrounds the adjacent region with the specimen region on the photographing roller.
In one manner, the embodiment of the present application does not specifically limit the area of the adjacent region, i.e., as long as it is at least circumferentially adjacent to the specimen region.
And 5, identifying the length value and the width value of the specimen region by using an image detection model, and comparing the length value and the width value with a pre-stored standard size value in a consistent manner.
After this step, step 6a or step 6b may be performed.
And 6a, detecting that the length value and the width value are consistent with the standard size value, and determining that the size of the specimen region accords with the preset size.
And 7a, determining a detection result of the first pole piece to be detected by using the image pickup device for the first image to be detected acquired by the first pole piece to be detected.
And 6b, detecting that the length value and the width value are inconsistent with the standard value, and generating an alarm event for reflecting that the imaging device does not meet the detection condition.
The alarm event comprises at least one of camera offset and camera focal length misalignment.
By applying the technical scheme of the embodiment of the application, before the polar plate is subjected to image detection, the camera device can be tested whether the detection condition is met by using a mode of detecting whether the size of the specimen area on the photographing roller meets the preset size. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided. And further, the problems that the pole piece is not abnormal but the detection result of the pole piece is abnormal in the related technology are solved.
The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.
Optionally, in another embodiment of the present application, as shown in fig. 6, the present application further provides a device for detecting a pole piece. The method comprises the following steps:
an acquisition module 201 configured to acquire a photographing roller image including a specimen region by using an imaging device, wherein the photographing roller carries a first pole piece to be detected;
the detection module 202 is configured to detect that the size of the specimen region meets a preset size, and determine a detection result of the first to-be-detected pole piece by using the image pickup device for a first to-be-detected image acquired by the first to-be-detected pole piece.
By applying the technical scheme of the embodiment of the application, before the polar plate is subjected to image detection, the camera device can be tested whether the detection condition is met by using a mode of detecting whether the size of the specimen area on the photographing roller meets the preset size. Therefore, the false detection problem caused by the fact that the acquired image of the camera device does not accord with the standard due to the fact that the camera device shifts or focuses and the like is avoided. And further, the problems that the pole piece is not abnormal but the detection result of the pole piece is abnormal in the related technology are solved.
In another embodiment of the present application, the detection module 202 is configured to:
identifying a length value and a width value of the specimen region by using an image detection model;
consistency comparison is carried out on the length value and the width value and a pre-stored standard size value, wherein the standard size value comprises a standard length value and a standard width value of the specimen region;
and detecting that the length value and the width value are consistent with the standard size value, and determining that the size of the specimen region accords with a preset size.
In another embodiment of the present application, the detection module 202 is configured to:
detecting that the length value and the width value are inconsistent with the standard value, and generating an alarm event for reflecting that the camera device does not meet detection conditions, wherein the alarm event comprises at least one of camera device offset and camera device focal length inaccuracy;
and determining that the size of the detected specimen region accords with a preset size.
In another embodiment of the present application, the detection module 202 is configured to:
determining the photographing roller to be in an operating state, and collecting a plurality of candidate photographing roller images in a preset time period;
selecting a photographing roller image acquired at a preset angle from the plurality of candidate photographing roller images, wherein the preset angle is an angle at which the specimen region and an adjacent region can be acquired, and the adjacent region is a region surrounding the adjacent region with the specimen region on the photographing roller.
In another embodiment of the present application, the detection module 202 is configured to:
the color difference between the color of the specimen region and the color of the adjacent region exceeds a preset threshold.
In another embodiment of the present application, the detection module 202 is configured to:
in the historical time period, acquiring a second image to be detected of a second pole piece to be detected by using the camera device;
based on the second image to be detected, determining that the detection result of the second pole piece to be detected is unqualified;
and acquiring a photographing roller image comprising the specimen region by using an image pickup device.
In another embodiment of the present application, the detection module 202 is configured to:
establishing a mapping relation among the first pole piece to be detected, the corresponding detection result and the corresponding camera device; storing the mapping relation into a preset storage area;
and receiving an acquisition instruction sent by a device detection system, extracting the mapping relation from the preset storage area and sending the mapping relation to the device detection system.
The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.
The embodiment of the application also provides electronic equipment for executing the detection method of the pole piece. Referring to fig. 7, a schematic diagram of an electronic device according to some embodiments of the present application is shown. As shown in fig. 7, the electronic apparatus 3 includes: a processor 300, a memory 301, a bus 302 and a communication interface 303, the processor 300, the communication interface 303 and the memory 301 being connected by the bus 302; the memory 301 stores a computer program that can be executed on the processor 300, and the processor 300 executes the method for detecting a pole piece according to any one of the foregoing embodiments of the present application when executing the computer program.
The memory 301 may include a high-speed random access memory (RAM: random Access Memory), and may further include a non-volatile memory (non-volatile memory), such as at least one magnetic disk memory. The communication connection between the device network element and at least one other network element is achieved through at least one communication interface 303 (which may be wired or wireless), the internet, a wide area network, a local network, a metropolitan area network, etc. may be used.
Bus 302 may be an ISA bus, a PCI bus, an EISA bus, or the like. The buses may be classified as address buses, data buses, control buses, etc. The memory 301 is configured to store a program, and the processor 300 executes the program after receiving an execution instruction, and the method for identifying data disclosed in any of the foregoing embodiments of the present application may be applied to the processor 300 or implemented by the processor 300.
The processor 300 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 300 or by instructions in the form of software. The processor 300 may be a general-purpose processor, including a processor (Central Processing Unit, CPU for short), a network processor (Network Processor, NP for short), etc.; but may also be a Digital Signal Processor (DSP), application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed.
A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 301, and the processor 300 reads the information in the memory 301, and in combination with its hardware, performs the steps of the above method.
The electronic equipment provided by the embodiment of the application and the detection method of the pole piece provided by the embodiment of the application have the same beneficial effects as the method adopted, operated or realized by the same application conception.
The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.
The embodiment of the present application further provides a computer readable storage medium corresponding to the method for detecting a pole piece provided in the foregoing embodiment, referring to fig. 8, the computer readable storage medium is shown as an optical disc 40, on which a computer program (i.e. a program product) is stored, where the computer program, when executed by a processor, performs the method for detecting a pole piece provided in any of the foregoing embodiments.
It should be noted that examples of the computer readable storage medium may also include, but are not limited to, a phase change memory (PRAM), a Static Random Access Memory (SRAM), a Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), a Read Only Memory (ROM), an Electrically Erasable Programmable Read Only Memory (EEPROM), a flash memory, or other optical or magnetic storage medium, which will not be described in detail herein.
The computer readable storage medium provided by the above embodiment of the present application has the same advantageous effects as the method adopted, operated or implemented by the application program stored therein, for the same inventive concept as the method of data identification provided by the embodiment of the present application.
It should be noted that:
in the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the application may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the above description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the following schematic diagram: i.e., the claimed application requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this application.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (8)

1. The detection method of the pole piece is characterized by comprising the following steps:
collecting a photographing roller image comprising a specimen region by using a camera device, wherein the photographing roller carries a first pole piece to be detected;
detecting that the size of the specimen region accords with a preset size, determining that the imaging device meets detection conditions, and determining a detection result of the first pole piece to be detected by utilizing the imaging device aiming at a first image to be detected acquired by the first pole piece to be detected;
Wherein the detecting that the size of the specimen region meets a preset size includes:
identifying a length value and a width value of the specimen region by using an image detection model;
consistency comparison is carried out on the length value and the width value and a pre-stored standard size value, wherein the standard size value comprises a standard length value and a standard width value of the specimen region;
detecting that the length value and the width value are consistent with the standard size value, and determining that the size of the specimen region accords with a preset size;
and detecting that the length value and the width value are inconsistent with the standard value, and generating an alarm event for reflecting that the imaging device does not meet the detection condition, wherein the alarm event comprises at least one of offset of the imaging device and inaccurate focal length of the imaging device.
2. The method of claim 1, wherein capturing a photographic roller image including the specimen region with the imaging device comprises:
determining the photographing roller to be in an operating state, and collecting a plurality of candidate photographing roller images in a preset time period;
selecting a photographing roller image acquired at a preset angle from the plurality of candidate photographing roller images, wherein the preset angle is an angle at which the specimen region and an adjacent region can be acquired, and the adjacent region is a region surrounding the adjacent region with the specimen region on the photographing roller.
3. The method of claim 2, wherein a color difference between the color of the specimen region and the color of the adjacent region exceeds a preset threshold.
4. The method as claimed in claim 1, comprising:
in the historical time period, acquiring a second image to be detected of a second pole piece to be detected by using the camera device;
based on the second image to be detected, determining that the detection result of the second pole piece to be detected is unqualified;
and acquiring a photographing roller image comprising the specimen region by using an image pickup device.
5. The method of claim 1, further comprising, after said determining the detection result of the first pole piece to be detected:
establishing a mapping relation among the first pole piece to be detected, the corresponding detection result and the corresponding camera device; storing the mapping relation into a preset storage area;
and receiving an acquisition instruction sent by a device detection system, extracting the mapping relation from the preset storage area and sending the mapping relation to the device detection system.
6. The utility model provides a detection device of pole piece which characterized in that includes:
the collecting module is configured to collect a photographing roller image comprising a specimen region by using a camera device, wherein the photographing roller carries a first pole piece to be detected;
The detection module is configured to detect that the size of the specimen region accords with a preset size, determine that the imaging device meets detection conditions, and determine a detection result of the first pole piece to be detected by utilizing the imaging device for a first image to be detected acquired by the first pole piece to be detected;
wherein the detecting that the size of the specimen region meets a preset size includes:
identifying a length value and a width value of the specimen region by using an image detection model;
consistency comparison is carried out on the length value and the width value and a pre-stored standard size value, wherein the standard size value comprises a standard length value and a standard width value of the specimen region;
detecting that the length value and the width value are consistent with the standard size value, and determining that the size of the specimen region accords with a preset size;
and detecting that the length value and the width value are inconsistent with the standard value, and generating an alarm event for reflecting that the imaging device does not meet the detection condition, wherein the alarm event comprises at least one of offset of the imaging device and inaccurate focal length of the imaging device.
7. An electronic device, comprising:
a memory for storing executable instructions; the method comprises the steps of,
A processor for executing the executable instructions with the memory to perform the operations of the method of detecting a pole piece of any one of claims 1-5.
8. A computer readable storage medium storing computer readable instructions, wherein the instructions when executed perform the operations of the method of detecting a pole piece of any one of claims 1-5.
CN202310600120.4A 2023-05-25 2023-05-25 Pole piece detection method, device, equipment and medium Active CN116342593B (en)

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CN115841445A (en) * 2022-04-18 2023-03-24 宁德时代新能源科技股份有限公司 Method, device and system for detecting cathode pole piece of composite material belt

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CN115841445A (en) * 2022-04-18 2023-03-24 宁德时代新能源科技股份有限公司 Method, device and system for detecting cathode pole piece of composite material belt
CN115272280A (en) * 2022-08-16 2022-11-01 杭州安脉盛智能技术有限公司 Defect detection method, device, equipment and storage medium

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