CN115877738A - Machine vision-based spiral line management system and control method - Google Patents

Abstract

The invention discloses a machine vision-based spiral line management system, which comprises: the visual acquisition module is provided with a plurality of visual collectors facing the wire outlet ends of the winding machines respectively; the visual identification module comprises a management server and an integrated display, the integrated display can simultaneously display first image information transmitted by a plurality of visual collectors, the management server is prestored with a monitoring algorithm containing an abnormal identification program, the abnormal identification program is used for identifying abnormal spiral lines, and the abnormal identification program can identify the abnormal spiral lines from the first image information transmitted by the plurality of visual collectors; the alarm module is provided with a plurality of alarm devices which are respectively arranged on the plurality of ring winding machines; and the information transmission module is used for realizing signal connection between the visual acquisition module and the visual identification module and realizing signal connection between the visual identification module and the alarm module.

Description

Machine vision-based spiral line management system and control method

Technical Field

The invention relates to the technical field of spiral net production and manufacturing, in particular to a spiral line management system and a control method based on machine vision.

Background

The spiral net is widely used in the fields of papermaking, coal washing, chemical industry, sewage desliming and the like and is formed by passing a high-molecular spiral raw material through a net. In the process of producing and manufacturing the spiral net, the forming parameters of the spiral line (used for manufacturing the spiral net), such as the ring diameter, the shape, the thread pitch and the like, have great influence on the quality of the spiral net. In the prior art, a specially-assigned person is adopted to check the discharge state of the spiral line and the residual capacity of the take-up barrel on site to identify the abnormal spiral line and replace the take-up barrel. The mode is difficult to realize carrying out scientific and comprehensive quality record and aassessment to the production process of spiral line, and meanwhile, the production condition that the field inspection of a specially-assigned person is carried out on a plurality of winding machines is bound to have monitoring blind areas and monitoring careless omission, so that the condition that abnormal winding machines are not found in time and a large amount of raw materials are wasted sometimes happens.

Disclosure of Invention

In order to solve the technical problems related to the prior art that scientific and comprehensive quality recording and evaluation of the spiral line production process are difficult to realize, the invention aims to provide a spiral line management system and a control method based on machine vision, which can monitor and manage the spiral lines produced by a plurality of winding machines simultaneously and identify abnormal spiral lines.

In order to achieve the above object, an aspect of the present invention provides a machine vision-based spiral line management system, which is capable of monitoring spiral lines produced by a plurality of winding machines and identifying abnormal spiral lines therefrom, wherein each winding machine has a wire outlet for outputting a spiral line, and the spiral line management system includes: the visual acquisition module is provided with a plurality of visual collectors facing the wire outlet ends of the plurality of winding machines respectively, and each visual collector is configured to be capable of acquiring and transmitting first image information corresponding to the wire outlet end; the visual recognition module comprises a management server and an integrated display, the integrated display can simultaneously display first image information transmitted by the plurality of visual collectors, and the management server can recognize abnormal spiral lines from the image information transmitted by the plurality of visual collectors and send abnormal signals to the outside; the alarm module is in signal connection with the visual identification module and comprises a plurality of alarm devices which are respectively arranged on a plurality of winding machines, and the alarm devices are configured to alarm when receiving the abnormal signals; and the information transmission module is used for realizing the signal connection between the visual acquisition module and the visual identification module and the signal connection between the visual identification module and the alarm module.

In the above-mentioned technical solution, preferably, the management server is further pre-stored with a first standard image, and the management server is configured to generate a corresponding first captured image based on each of the first video information, and identify an abnormal spiral line by sequentially comparing the first standard image and each of the first captured images.

In the above technical solution, preferably, the visual recognition module further includes a first contrast plate disposed at the outlet end, and the visual collector is configured to collect image information on the first contrast plate as the first image information. It is further preferred that the first control panel is configured as a replaceable component that can be replaced with a different color.

In the above technical solution, preferably, the winding machine further includes a take-up barrel (41) located below the outlet end and a wagon balance supporting the take-up barrel, the wagon balance is configured to be in signal connection with the management server and can send a weight signal to the management server, and the weight signal is used for indicating the weight of the take-up barrel. Still further preferably, the vision acquisition module further comprises a second contrast plate arranged on the upper portion of the inner side wall surface of the take-up barrel, and the vision acquisition device can acquire and transmit second image information of the second contrast plate. It is further preferable that the management server is further pre-stored with second standard images, and the management server is configured to generate corresponding second collected images based on the second image information, and identify the take-up barrel in a full barrel state by sequentially comparing the second standard images with the second collected images.

In another aspect, the present invention provides a control method for a spiral management system, where the control method includes the following steps: s11, acquiring first image information of outlet ends of a plurality of ring winding machines, and generating a plurality of corresponding first collected images based on the first image information; s12, providing a first standard image and raw material information, and adjusting the plurality of first collected images in sequence based on the first standard image; s13, sequentially comparing the first standard image with the plurality of adjusted first collected images and judging whether the spiral line in the first collected images is an abnormal spiral line or not; and S14, if the abnormal spiral line is judged, recording the raw material information, the generated time and the corresponding winding machine of the abnormal spiral line, and sending an abnormal signal to the corresponding alarm device.

In the above technical solution, preferably, the control method further includes a full bucket identification step: s21, collecting weight information of a plurality of take-up barrels, providing a weight threshold value and identifying the take-up barrel with the weight larger than the weight threshold value; s22, collecting second image information of the identified take-up barrels, and generating a plurality of corresponding second collected images based on the second image information; s22, providing a second standard image, sequentially comparing the second standard image with the plurality of second collected images and judging whether the corresponding take-up barrel is full or not; and S23, if the full barrel state is judged, recording the winding machine corresponding to the winding barrel and sending a full barrel signal to the corresponding alarm device.

The invention provides a control method of a second spiral management system, which comprises the following steps: s11', first image information of wire outlet ends of a plurality of ring winding machines is obtained, and a plurality of corresponding first collected images are generated based on the first image information; s12', sequentially identifying the central line, the minimum ring diameter and the maximum ring diameter of the spiral line in a plurality of first collected images, wherein the maximum ring diameter is the maximum value of the distance from each wave peak or wave trough on the spiral line to the central line in the first collected images, and the minimum ring diameter is the minimum value of the distance from each wave peak or wave trough on the spiral line to the central line in the first collected images; s13', providing a ring diameter interval of a standard spiral line, sequentially comparing the minimum ring diameter and the ring diameter interval of the spiral line in a plurality of first collected images and comparing the maximum ring diameter and the ring diameter interval of the spiral line in a plurality of first collected images, and if the minimum ring diameter or the maximum ring diameter of the spiral line is positioned outside the ring diameter interval, judging that the spiral line is an abnormal spiral line; and S14', if the abnormal spiral line is judged, recording the raw material information, the generated time and the corresponding winding machine of the abnormal spiral line, and sending an abnormal signal to the corresponding alarm device.

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: 1. the spiral line forming state is monitored in real time through the visual collectors arranged on the winding machines, and scientific and comprehensive control of the spiral line production process is achieved; 2. abnormal spiral lines are found in time, and then a large amount of raw materials are wasted on the wall surface; 3. the production cost of the spiral line is reduced; 4. improve the working environment of the staff.

Drawings

FIG. 1 is a schematic diagram of the modules of a machine vision-based thread management system provided by the present invention;

FIG. 2 is a schematic perspective view of a vision module and an alarm module of the looping machine according to the present invention;

FIG. 3 is a top view of FIG. 2 at A;

FIG. 4 is a cross-sectional view at B shown in FIG. 2;

FIG. 5 is a flow chart illustrating an exception handling process according to the present invention;

FIG. 6 is a diagram illustrating the effect of the anomaly recognition program shown in FIG. 4 in practical application;

FIG. 7 is a flowchart of another exception identification process provided by the present invention;

FIG. 8 is a flowchart illustrating a full bucket identification procedure according to the present invention;

fig. 9 is a schematic diagram illustrating the effect of the full-bucket identification procedure shown in fig. 7.

Detailed Description

To explain technical contents, structural features, achieved objects and effects of the invention in detail, the technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough description of various exemplary embodiments or implementations of the invention. However, various exemplary embodiments may be practiced without these specific details or with one or more equivalent arrangements. Moreover, the various exemplary embodiments may be different, but are not necessarily exclusive. For example, the particular shapes, configurations and characteristics of the exemplary embodiments may be used or implemented in another exemplary embodiment without departing from the inventive concept.

In the following, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

Further, spatially relative terms such as "under 8230; \8230;," 'under 8230; \8230;, \8230, under', "\8230, below", "under \8230; \8230, above", "on", "at 8230; \8230, above", "higher", "side" (e.g., as in "side wall"), etc., are used herein to describe the relationship of one element to another (other) element as illustrated in the figures. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and/or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "at 8230 \8230; below" may include both an orientation of above and below. Moreover, the devices may be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the application, "raw material information" means physical parameters of the spiral line, such as the material, the ring diameter, the thread pitch and the like, which have a distinguishing effect on the type of the produced spiral line; "receive weight of line bucket" in this application means the total weight of receiving the line bucket, and it comprises the weight of receiving line bucket self and the weight that is located the helix of receiving the line bucket.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate.

The commercially available spiral line is generally machined into a spring-like spiral structure by using a spiral winding machine, and the projection of the spiral line forms a sine wave curve with a fixed period in a projection direction perpendicular to the center line of the spiral line, and the sine wave curve has wave crests and wave troughs. In order to improve the production efficiency, the online management mode of a plurality of devices is adopted for production, and real-time monitoring and automatic early warning are realized through a set of spiral line management system.

Fig. 1 to 4 show a machine vision-based helix management system according to the present invention, which is capable of simultaneously monitoring the helices produced by several winding machines 1 and identifying abnormal helices therein. Wherein, the circulator 1 is used for making the raw material line 8 into helical helix, and the circulator 1 has the outlet end 2 that supplies the helix ejection of compact and is used for collecting and storing the receipts line bucket 41 of helix, receives the line bucket 41 and is located the downside of outlet end 2 and supports on a weighbridge 42, and weighbridge 42 is configured to be connected with management server (see below) signal and can send the weight signal of receiving the line bucket 41 to management server, and the weight signal is used for showing the weight of receiving the line bucket 41.

The spiral line management system comprises a visual acquisition module, a visual identification module, an alarm module and an information transmission module. The information transmission module is used for realizing signal connection between the visual acquisition module and the visual identification module and signal connection between the visual identification module and the alarm module. In this example, the information transmission module adopts a wireless transmission mode, and in other embodiments, the information transmission module can also adopt a wired transmission mode.

Referring to fig. 3, the vision collecting module includes a plurality of vision collecting components corresponding to the plurality of winding machines 10, and each vision collecting component includes a first contrast plate 3 disposed at the wire outlet end 2 of the corresponding winding machine 1, a second contrast plate 43 disposed at the upper portion of the inner sidewall surface of the corresponding wire receiving barrel 41, and a vision collector 5 in signal connection with the vision identifying module. Wherein, the second contrast plate 43 is arranged within a range of 5-10cm from the top of the take-up barrel 41, and the vision collector 5 is controlled by the management server.

The first control plate 3 is configured to be replaceable with a solid member of a different color to improve the color contrast between the first control plate 3 and the spiral line. For example, when the helix is blue, the first lighting panel 3 may be replaced with orange. In this embodiment, the second control board 43 is configured as an alternative solid-colored component similar to the first control board 3, and in other embodiments, the second control board can be configured as a control board with a specific image (such as a weight mark line, a height mark line, etc.) attached thereto without affecting the recognition of the spiral line from the second control board by the management server.

The vision collector 5 is located on the upper side of the outlet end 2 of the ring winding machine 1 and faces the outlet end 2, and the vision collector 5 is configured to collect the first image information on the first comparison board 3 and the second image information on the second comparison board 43 in real time and transmit the first image information and the second image information to the vision recognition module. When the weighbridge 42 detects that the weight of the corresponding take-up barrel 41 is greater than a weight threshold, the management server controls the vision collector 5 to collect the second image information, the weight threshold is a preset threshold, and in actual application, the weight value of the take-up barrel 41 in a state close to a full barrel state can be used as the weight threshold. The rear part of the vision collector 5 is provided with an adjusting light source 6, and the adjusting light source 6 is used for providing backlight so as to ensure that the image information picture is clear. In this embodiment, the vision collector 5 is a wide area camera to collect the first image information and the second image information at the same time. In other embodiments, the vision acquisition module may be configured with a rotatable vision collector or a pair of vision collectors facing the first and second contrast plates, respectively, to acquire the first image information and the second image information.

The alarm module is provided with alarm devices 7 respectively arranged on the plurality of winding machines 1, the alarm devices 7 in the embodiment are light alarm devices, and the alarm devices 7 are configured to give out flashing light alarms when receiving abnormal signals (see below) and give out normally bright light alarms when receiving full barrel signals (see below) so as to distinguish two different alarm states.

With continued reference to fig. 1, the visual recognition module includes a management server and an integrated display respectively in signal connection with the visual acquisition module. The integrated display is configured to display the first image information and the second image information transmitted by all the vision collectors 5 at the same time, so that the staff can observe the production conditions of several winding machines 10 at the same time. It should be noted that, if the service manager stops working (e.g., fails or is down for maintenance), the integrated display may still work normally, so that the worker can still recognize the abnormal spiral line by observing the integrated display.

The management server prestores a plurality of first standard images corresponding to the first image information and second standard images corresponding to the second image information, wherein the first standard images are used for displaying the standard style of the currently produced spiral line, namely, the spiral lines of different models (such as different ring diameters or different thread pitches) correspond to different first standard images; the second standard image is used to represent the rewinding barrel 41 in the incomplete state, and since the spiral line in the rewinding barrel 41 reaches the position of the second control plate 43 when the rewinding barrel is full, the second standard image in this example is a solid image with the same color as the second control plate 43. It should be noted that, the plurality of winding machines 1 may respectively generate helices of different standards, so that the first image information acquired by the different vision collectors 5 may correspond to different first standard images.

The management server is configured to be able to identify an abnormal spiral by comparing the first standard image with the first video information and send an abnormal signal to the corresponding alarm device 7, and to identify a full-barrel take-up barrel 4 by comparing the second standard image with the second video information and send a full-barrel signal to the corresponding alarm device 7. The management server can also record production parameters such as unit production quantity, fault rate and defective rate of each winding machine 1 and generate corresponding analysis reports so as to manage each winding machine 1 and guide the production operation of the spiral line.

Fig. 5 to 9 show a control method of the spiral management system provided by the present invention, which includes an abnormality identification program for identifying an abnormal spiral and a full-barrel identification program for identifying the take-up barrel 4 in a full-barrel state. In practical implementation, the control method may be pre-stored in the management server in the form of an algorithm. As shown in fig. 5, the abnormality recognition program includes the steps of:

s11, acquiring first image information of outlet ends of a plurality of ring winding machines, and generating a plurality of corresponding first collected images based on the first image information;

the management server captures a picture of the first video image generated by the vision collector 5 every time a time interval T elapses, and generates a corresponding first captured image from the captured picture. The method of generating the corresponding first captured image may be to separate the spiral image from the first control panel 3 image by color, a technique well known to those skilled in the art. It should be noted that, in order to ensure the recognition rate, the time interval T should be set according to the speed of the spiral line movement, so that at least a part of the two collected images overlaps with each other.

S12, providing a first standard image and raw material information, and adjusting the plurality of first collected images in sequence based on the first standard image;

in practical application, because the relation such as ejection of compact angle, position of helix, the helix on the collection image has the deviation on angle and the position compared with the helix on the standard image, therefore need carry out holistic adjustment to the helix on the collection image to align the helix on the standard image. In practice, the highest degree of fit may be used for the adjustment, which is well known to those skilled in the art.

S13, sequentially comparing the first standard image with the plurality of adjusted first collected images and judging whether the spiral line in the first collected images is an abnormal spiral line or not;

in practical implementation, the deviation values of all points on the spiral line in the first collected image relative to the standard image can be compared, and if one deviation value is greater than a preset deviation threshold value, the abnormal spiral line is judged.

And S14, if the abnormal spiral line is judged, recording the raw material information, the generated time and the corresponding winding machine of the abnormal spiral line, and sending an abnormal signal to the corresponding alarm device.

Fig. 6 shows an example of a practical application of the anomaly identification program, where T1 is a first standard image, and T1 'is a first captured image T1' of an abnormal spiral identified by the anomaly identification program. Comparing T1 with T1', it can be seen that the spiral line indicated by T1' has a portion having a larger offset from the spiral line indicated by T1, and thus the spiral line indicated by T1' can be determined to be an abnormal spiral line.

As shown in fig. 7, in other embodiments, the following method may be used by the recognition program: setting a ring diameter threshold value in an abnormality identification program and executing the following steps:

s11', first image information of wire outlet ends of a plurality of ring winding machines is obtained, and a plurality of corresponding first collected images are generated based on the first image information;

s12', sequentially identifying the central line, the minimum ring diameter and the maximum ring diameter of the spiral line in a plurality of first collected images;

the maximum ring diameter is the maximum value of the distance from each peak or trough on the spiral line to the central line in the first collected image, and the minimum ring diameter is the minimum value of the distance from each peak or trough on the spiral line to the central line in the first collected image.

S13', providing a ring diameter interval of a standard spiral line, sequentially comparing the minimum ring diameter and the ring diameter interval of the spiral line in a plurality of first collected images and comparing the maximum ring diameter and the ring diameter interval of the spiral line in a plurality of first collected images, and if the minimum ring diameter or the maximum ring diameter of the thread line is positioned outside the ring diameter interval, judging that the thread line is an abnormal spiral line;

the ring diameter interval is the generated spiral ring diameter allowable range in the standard mode, and the spiral lines with different standards are corresponding to different ring diameter intervals.

And S14', if the abnormal spiral line is judged, recording the raw material information, the generation time and the corresponding winding machine of the abnormal spiral line, and sending an abnormal signal to the corresponding alarm device.

As shown in fig. 8, the identification procedure is used to determine whether the rewinding barrel is in a full barrel state, and the full barrel identification procedure includes the following steps:

s21, collecting weight information of a plurality of take-up barrels 41, providing a weight threshold value and identifying the take-up barrels 41 with the weight larger than the weight threshold value;

s22, collecting second image information of the plurality of identified take-up barrels 41, and producing a plurality of corresponding second collected images based on the plurality of second image information;

s23, providing a second standard image, sequentially comparing the second standard image with a plurality of second collected images and judging whether the corresponding take-up barrel is full or not;

in this example, the second standard image is a pure color image with a color consistent with that of the second contrast plate 43, and therefore, it is only necessary to display a spiral line on the second collected image (that is, the spiral line collected by the second visual collector in the take-up barrel 4 reaches the position of the extension ring), and it can be determined that the corresponding take-up barrel 4 is in a full barrel state.

And S24, if the full barrel state is judged, recording the winding machine corresponding to the take-up barrel and sending a full barrel signal to the corresponding alarm device.

Fig. 9 shows an example of a practical application of the full-bucket identification procedure, where T2 is the second standard image, and T2 'is the second captured image T2' of the full-bucket state rewinding bucket 4 identified by the full-bucket identification procedure. Comparing T21 with T21' can find that T2' has a helix that T2 does not have, so that it can be determined that the take-up barrel corresponding to T2' is in a full barrel state.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the foregoing description only for the purpose of illustrating the principles of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims, specification, and equivalents thereof.

Claims (10)

1. The utility model provides a helix management system based on machine vision, helix management system can monitor the helix of a plurality of winding machines (1) production simultaneously and discern unusual helix from it, each winding machine (1) all have leading-out terminal (2) that are used for exporting the helix, its characterized in that: the helix management system comprises:

the visual acquisition module is provided with a plurality of visual collectors (5) which respectively face the wire outlet ends (2) of the plurality of winding machines (1), and each visual collector (5) is configured to be capable of acquiring and transmitting first image information corresponding to the wire outlet ends (2);

the visual recognition module comprises a management server and an integrated display, the integrated display can simultaneously display first image information transmitted by the plurality of visual collectors (5), and the management server can recognize abnormal spiral lines from the image information transmitted by the plurality of visual collectors (5) and send abnormal signals to the outside;

the alarm module is in signal connection with the visual identification module and comprises a plurality of alarm devices (7) which are respectively arranged on a plurality of winding machines (1), and the alarm devices (7) are configured to alarm when receiving the abnormal signals; and

and the information transmission module is used for realizing the signal connection between the vision acquisition module and the vision identification module and the signal connection between the vision identification module and the alarm module.

2. The spiral management system of claim 1, wherein: the management server is also pre-stored with a first standard image, and is configured to generate a corresponding first collected image based on each first image information and identify an abnormal spiral line by sequentially comparing the first standard image with each first collected image.

3. The spiral management system according to claim 1, wherein the visual identification module further comprises a first contrast plate (3) disposed on the outlet end (2), and the visual collector (5) is configured to collect image information on the first contrast plate (3) as the first image information.

4. A spiral management system according to claim 3, wherein the first contrast plate (3) is configured as a replaceable part that can be replaced with a different color.

5. The spiral management system according to claim 1, wherein the winding machine (1) further comprises a take-up drum (41) located on the lower side of the outlet end (2) and a wagon balance (42) supporting the take-up drum (41), the wagon balance (42) being configured to signal the management server and being capable of sending a weight signal to the management server, the weight signal being indicative of the weight of the take-up drum (41).

6. The spiral management system according to claim 5, wherein the visual acquisition module further comprises a second control board (43) disposed on an upper portion of an inner sidewall of the take-up barrel (41), and the visual acquisition module (5) is capable of acquiring and transmitting second image information of the second control board (43).

7. The spiral management system according to claim 6, wherein the management server is further pre-stored with second standard images, and the management server is configured to generate corresponding second collected images based on each second image information and identify a winding barrel (41) in a full barrel state by sequentially comparing the second standard images with each second collected image.

8. A method of controlling a helix management system, comprising the steps of:

s11, first image information of a plurality of wire outlet ends of the ring winding machine is obtained, and a plurality of corresponding first collected images are generated based on the first image information;

s12, providing a first standard image and raw material information, and adjusting the plurality of first collected images in sequence based on the first standard image;

s13, sequentially comparing the first standard image with the plurality of adjusted first collected images and judging whether the spiral line in the first collected images is an abnormal spiral line or not;

and S14, if the abnormal spiral line is judged, recording the raw material information, the generated time and the corresponding winding machine of the abnormal spiral line, and sending an abnormal signal to the corresponding alarm device.

9. The control method according to claim 8, further comprising a full bucket identification step of:

s21, collecting weight information of a plurality of take-up barrels (41), providing a weight threshold value and identifying the take-up barrels (41) with the weight larger than the weight threshold value;

s22, collecting second image information of the identified take-up barrels (41), and generating a plurality of corresponding second collected images based on the second image information;

s23, providing a second standard image, sequentially comparing the second standard image with the plurality of second collected images and judging whether the corresponding take-up barrel is full or not;

s24, if the full barrel state is judged, recording the winding machine corresponding to the winding barrel and sending a full barrel signal to the corresponding alarm device.

10. A method of controlling a helix management system, comprising the steps of:

s11', first image information of wire outlet ends of a plurality of ring winding machines is obtained, and a plurality of corresponding first collected images are generated based on the first image information;

s12', sequentially identifying the central line, the minimum ring diameter and the maximum ring diameter of the spiral line in a plurality of first collected images, wherein the maximum ring diameter is the maximum value of the distance from each wave peak or wave trough on the spiral line to the central line in the first collected images, and the minimum ring diameter is the minimum value of the distance from each wave peak or wave trough on the spiral line to the central line in the first collected images;

s13', providing a ring diameter interval of a standard spiral line, sequentially comparing the minimum ring diameter and the ring diameter interval of the spiral line in a plurality of first collected images and comparing the maximum ring diameter and the ring diameter interval of the spiral line in a plurality of first collected images, and if the minimum ring diameter or the maximum ring diameter of the thread line is positioned outside the ring diameter interval, judging that the thread line is an abnormal spiral line;

and S14', if the abnormal spiral line is judged, recording the raw material information, the generation time and the corresponding winding machine of the abnormal spiral line, and sending an abnormal signal to the corresponding alarm device.

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