A method and system for intelligent parameter optimization of a wiring harness production line

Abstract

The application discloses a kind of for harness production line intelligent parameter optimization method and system, belong to production monitoring technical field.The harness cross section after cutting is photographed, obtains harness cross section image, more accurate harness outer layer structure thickness is obtained based on harness cross section image by image processing means, while reducing labor cost to some extent;By scanning before carrying out harness outer layer structure cutting work, obtain the multiple scanning radial distance values of the current cutting harness, and then based on the scanning radial distance values when carrying out harness outer layer structure cutting work, the position of cutting disc in cutting unit is adjusted at each detection position, and then the cutting distance is adjusted, solve the problem that the cutting mode of fixed cutting distance is used in prior art to cut, and the core is easily damaged.

Description

A method and system for intelligent parameter optimization in wire harness production lines Technical Field

[0001] This invention relates to the field of production monitoring technology, specifically to a method and system for intelligent parameter optimization in wire harness production lines. Background Technology

[0002] A wire harness typically consists of a wire core, an insulation layer, and a protective layer, arranged sequentially from the inside out. A wire harness production line usually comprises multiple workstations, each responsible for completing one stage of the wire harness production process. These stages may include material preparation, cutting, stripping, assembly, welding / riveting, testing, and packaging. The specific processing steps for each stage are as follows: Material preparation: Raw materials for wire harnesses provided by suppliers need to be inspected and stored according to specified requirements to ensure that the quality of the raw materials meets production standards; Cutting and stripping: Raw materials are cut and stripped to facilitate subsequent processing. This step is usually completed by automated equipment to improve efficiency and accuracy; Assembly: Processed wire harnesses and connectors are assembled according to requirements using automated equipment or manually. The assembly process may involve auxiliary equipment such as vibratory feeders, elevators, and conveyor belts; Welding / riveting: Welding or riveting is required to ensure that the wire harnesses and connectors are firmly and tightly connected. This step also relies on advanced welding / riveting technology and equipment; Inspection: Finished products are inspected to ensure that their quality meets standards. Inspection may include multiple aspects such as visual inspection and performance testing; Packaging: Qualified finished products are packaged and labeled for transportation and use. The packaging process may also use automated equipment to improve efficiency.

[0003] In existing wire harness production lines, the stripping process typically involves using a ring-shaped cutting device to cut the insulation and protective layers of the wire harness before stripping them from the wire core. However, when using a ring-shaped cutting device to cut the insulation and protective layers, it is difficult to ensure that the wire harness is centered on the device. This leads to potential damage to the wire core when using a fixed cutting distance in a single cut, reducing the yield rate of finished wire harnesses and increasing production costs. These problems urgently need to be addressed. Therefore, this paper proposes an intelligent parameter optimization method and system for wire harness production lines. Summary of the Invention

[0004] The technical problem to be solved by this invention is: how to solve the problem that the wire core is easily damaged when cutting with a fixed cutting distance in the prior art, and to provide an intelligent parameter optimization system for wire harness production lines.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions: the present invention includes an image acquisition module, a thickness detection module, a distance detection module, and a cutting distance adjustment module;

[0006] The image acquisition module is used to take a picture of the cut wire harness cross-section, acquire the wire harness cross-section image, and preprocess the wire harness cross-section image to obtain a preprocessed wire harness cross-section image.

[0007] The thickness detection module is used to detect the thickness of the outer layer structure of the wire harness in the preprocessed wire harness cross-sectional image and obtain the outer layer structure thickness L1 of the wire harness.

[0008] The distance detection module is used to detect the distance between the wire harness to be cut and the distance sensor at multiple detection positions along the circumference of the annular cutting device before cutting the outer layer structure of the wire harness, and to obtain the scanning radial distance value J. k And record each detection location, where K represents the sequence number of the detection location;

[0009] The cutting distance adjustment module is used to adjust the cutting distance according to the outer layer structure thickness L1 of the wire harness and the scanning radial distance value J. k When cutting the outer layer structure of the wire harness, the position of the cutting disc in the cutting unit is adjusted, thereby adjusting the cutting distance.

[0010] Furthermore, the image acquisition module includes an image capturing unit and a preprocessing unit; the image capturing unit is used to capture the cross-section of the cut wire harness using an industrial camera to obtain a cross-section image of the wire harness; the preprocessing unit is used to perform noise reduction and enhancement processing on the cross-section image of the wire harness to obtain a preprocessed cross-section image of the wire harness.

[0011] Furthermore, the outer layer structure of the wire harness includes an insulation layer and a protective layer, and the thickness of the outer layer structure is the total thickness of the insulation layer and the protective layer.

[0012] Furthermore, the thickness detection module includes a core detection unit, a protective layer outer contour detection unit, and a thickness acquisition unit. The core detection unit uses a trained core target detection model to detect the cores in the preprocessed wire harness cross-sectional image, obtains the core detection frame and its position information, and then detects and identifies the outer contour of the core in the core detection frame to obtain the coordinates of each point on the outer contour line. The protective layer outer contour detection unit is used to detect and identify the outer contour of the protective layer in the preprocessed wire harness cross-sectional image to obtain the coordinates of each point on the outer contour line. The thickness acquisition unit is used to calculate the thickness L1 of the outer layer structure of the wire harness based on the coordinates of each point on the outer contour line of the core and the outer contour line of the protective layer.

[0013] Furthermore, the specific processing procedure in the core detection unit is as follows:

[0014] S11: Detect the wire cores in the preprocessed wire harness cross-sectional image using the trained wire core target detection model, and obtain the wire core detection box and the coordinates of its upper left and lower right corners;

[0015] S12: Determine the position of each edge of the core detection frame in the image based on the coordinates of the upper left and lower right corners of the core detection frame, and determine the area enclosed by the core detection frame as the core outer contour detection area;

[0016] S13: Use the contour detection function in OpenCV to detect and identify the outer contour of the wire core inside the outer contour detection area, and obtain the coordinates of each point on the outer contour line of the wire core.

[0017] Furthermore, the specific processing procedure in the thickness acquisition unit is as follows:

[0018] S21: Determine the coordinates of the center point of the core detection frame based on the coordinates of its upper left and lower right corners. The center point is denoted as Z.

[0019] S22: Draw two perpendicular lines through the center point Z. One line is parallel to the x-axis of the image and intersects the outer contour of the core at points M1 and M2, and the outer contour of the protective layer at points N1 and N2. The other line is parallel to the y-axis of the image and intersects the outer contour of the core at points M3 and M4, and the outer contour of the protective layer at points N3 and N4. See Figure 2.

[0020] S23: Calculate the lengths of line segments M1N1, M2N2, M3N3, and M4N4 in the image, and then calculate their arithmetic mean to obtain the average value L. avg , average value L avg The thickness L1 of the outer layer structure of the wire harness in the world coordinate system is obtained by transforming the image coordinate system and the world coordinate system according to the pre-defined transformation relationship.

[0021] Furthermore, in the distance detection module, the ranging scanning unit includes a first moving block, a first drive motor, and a ranging sensor. The first moving block is sleeved on the annular gear ring in the annular cutting device and is slidably connected to the annular gear ring. The first drive motor is located outside the first moving block, and its output end is provided with a first gear. The first gear meshes with the annular gear ring to drive the first moving block to make circumferential motion along the annular gear ring. The ranging sensor is installed inside the first moving block, and the laser emitted by it is along the radial direction of the annular gear ring and is coplanar with the cutting disk in the cutting unit. The cutting disk is regarded as a circular plane.

[0022] Furthermore, the specific processing procedure in the cutting distance adjustment module is as follows:

[0023] S31: Based on the outer layer structure thickness L1 of the wire harness and the scanning radial distance J k Calculate the radial distance C between the ranging sensor and the surface of the wire core at the corresponding position. k :

[0024] C k =L1+J k ;

[0025] S32: The radial distance R between the center point P of the cutting disc and the inner wall of the annular gear ring, based on the preset reference cutting distance. P And the radial distance R0 between the ranging sensor and the inner wall of the ring gear, calculate the radial distance adjustment T of the cutting disc at each detection position. k :

[0026] T k =C k -(R) P -R0)

[0027] Among them, R0, R P All are fixed values;

[0028] S33: Adjustment amount T based on the radial distance of the cutting disc at each detection position. k The sign and magnitude of the value are used to adjust the position of the cutting disc center P at each detection position during the cutting of the outer layer structure of the wire harness. This allows for adjustment of the cutting distance during a single cutting operation.

[0029] Furthermore, in S33, the radial distance adjustment amount T k The sign indicates the adjustment direction. A positive sign means the center point P of the cutting disc should be moved radially inward, and a negative sign means the center point P of the cutting disc should be moved radially outward. The moving distance is the radial distance adjustment amount T. k The numerical value.

[0030] Furthermore, in S33, the position adjustment unit includes an adjustment cylinder, which is radially arranged along the annular gear ring, and the axis of its cylinder column is on the same straight line as the center point P of the cutting disc in the cutting unit. The cylinder column of the adjustment cylinder is connected to the cutting motor in the cutting unit, thereby adjusting the radial distance of the center point P of the cutting disc to achieve the adjustment of the cutting distance.

[0031] This invention also provides an intelligent parameter optimization method for wire harness production lines, which optimizes the cutting distance using the aforementioned optimization system, comprising the following steps:

[0032] S1: Take a picture of the cross-section of the cut wire harness to obtain the cross-section image of the wire harness, and preprocess the cross-section image of the wire harness to obtain the preprocessed cross-section image of the wire harness;

[0033] S2: Detect the thickness of the outer layer structure of the wire harness in the preprocessed wire harness cross-sectional image and obtain the outer layer structure thickness L1 of the wire harness;

[0034] S3: Before cutting the outer layer structure of the wire harness, the distance between the wire harness to be cut and the distance measuring sensor in the circular cutting equipment is detected at multiple detection positions along the circumference of the circular cutting equipment to obtain the scanning radial distance value J. k And record each detection location;

[0035] S4: Based on the outer layer thickness L1 of the wire harness and the scanning radial distance J k When cutting the outer layer structure of the wire harness, the position of the cutting disc in the cutting unit is adjusted at each detection position, thereby adjusting the cutting distance.

[0036] Compared with the prior art, the present invention has the following advantages: The intelligent parameter optimization method and system for wire harness production lines takes pictures of the cross-section of the cut wire harness to obtain the cross-sectional image of the wire harness. Based on the cross-sectional image of the wire harness, a more accurate thickness of the outer layer structure of the wire harness is obtained through image processing, while reducing labor costs to a certain extent. By scanning to obtain multiple scanning radial distance values ​​of the wire harness to be cut before cutting the outer layer structure of the wire harness, and then adjusting the position of the cutting disk in the cutting unit at each detection position based on the scanning radial distance value during the cutting of the outer layer structure of the wire harness, the cutting distance can be adjusted, thereby solving the problem that the wire core is easily damaged when cutting with a fixed cutting distance in the prior art. Attached Figure Description

[0037] Figure 1 is a schematic diagram of the intelligent parameter optimization system for wire harness production line in an embodiment of the present invention;

[0038] Figure 2 is an example of a cross-sectional image of a wire harness in an embodiment of the present invention;

[0039] Figure 3 is a partial structural schematic diagram (front view) of the annular cutting device in an embodiment of the present invention. Detailed Implementation

[0040] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments.

[0041] As shown in Figure 1, this embodiment provides a technical solution: an intelligent parameter optimization system for wire harness production lines, including: an image acquisition module, a thickness detection module, a distance detection module, and a cutting distance adjustment module;

[0042] In this embodiment, the image acquisition module is used to take a picture of the cut wire harness cross-section, acquire the wire harness cross-section image, and preprocess the wire harness cross-section image to obtain a preprocessed wire harness cross-section image.

[0043] More specifically, the image acquisition module includes an image capturing unit and a preprocessing unit. The image capturing unit is used to capture images of the cut wire harness cross-section using an industrial camera, acquire wire harness cross-section images, and send the wire harness cross-section images to the preprocessing unit for preprocessing. The preprocessing unit is used to perform noise reduction and enhancement processing on the wire harness cross-section images to obtain preprocessed wire harness cross-section images, and send the preprocessed wire harness cross-section images to the thickness detection module for subsequent wire harness outer layer structure thickness detection.

[0044] More specifically, the optical axis of the industrial camera is set perpendicular to the plane containing the cross-section of the wire harness, and the projection point of the optical axis onto the plane containing the cross-section of the wire harness coincides with the center point of the wire core. This ensures the accuracy of the thickness of the outer layer structure of the wire harness obtained through subsequent detection.

[0045] More specifically, in the preprocessing unit, the noise reduction method uses a median filter to reduce noise in the image, and the image enhancement method uses a histogram equalization method to improve the contrast and brightness of the image, thereby improving the image quality.

[0046] In this embodiment, the thickness detection module is used to detect the thickness of the outer layer structure of the wire harness in the preprocessed wire harness cross-sectional image and obtain the outer layer structure thickness L1 of the wire harness.

[0047] It should be noted that, as shown in Figure 2, the outer layer structure of the wire harness includes an insulation layer 2 and a protective layer 3. Therefore, the thickness of the outer layer structure of the wire harness is the total thickness of the insulation layer 2 and the protective layer 3, excluding the wire core 1.

[0048] More specifically, the thickness detection module includes a core detection unit, a protective layer outer contour detection unit, and a thickness acquisition unit. The core detection unit uses a trained core target detection model to detect the cores in the preprocessed wire harness cross-sectional image, obtains the core detection frame and its position information, and then detects and identifies the outer contour of the core in the core detection frame to obtain the coordinates of each point on the outer contour line. The protective layer outer contour detection unit is used to detect and identify the outer contour of the protective layer in the preprocessed wire harness cross-sectional image to obtain the coordinates of each point on the outer contour line. The thickness acquisition unit is used to calculate the thickness L1 of the outer layer structure of the wire harness based on the coordinates of each point on the outer contour line of the core and the outer contour line of the protective layer.

[0049] More specifically, the core detection unit performs the following process:

[0050] S11: Detect the wire cores in the preprocessed wire harness cross-sectional image using the trained wire core target detection model, and obtain the wire core detection box and the coordinates of its upper left and lower right corners;

[0051] S12: Determine the position of each edge of the core detection frame in the image based on the coordinates of the upper left and lower right corners of the core detection frame, and determine the area enclosed by the core detection frame as the core outer contour detection area;

[0052] S13: Use the contour detection function in OpenCV to detect and identify the outer contour of the wire core inside the outer contour detection area, and obtain the coordinates of each point on the outer contour line of the wire core.

[0053] It should be noted that in S11, the core target detection model in this embodiment is trained based on the Faster RCNN target detection network, and the coordinates are coordinates in the image coordinate system.

[0054] More specifically, the processing procedure in the thickness acquisition unit is as follows:

[0055] S21: Determine the coordinates of the center point of the core detection frame based on the coordinates of its upper left and lower right corners. The center point is denoted as Z.

[0056] S22: Draw two perpendicular lines through the center point Z. One line is parallel to the x-axis of the image and intersects the outer contour of the core at points M1 and M2, and the outer contour of the protective layer at points N1 and N2. The other line is parallel to the y-axis of the image and intersects the outer contour of the core at points M3 and M4, and the outer contour of the protective layer at points N3 and N4. See Figure 2.

[0057] S23: Calculate the lengths of line segments M1N1, M2N2, M3N3, and M4N4 in the image, and then calculate their arithmetic mean to obtain the average value L. avg , average value L avg The thickness L1 of the outer layer structure of the wire harness in the world coordinate system is obtained by transforming the image coordinate system and the world coordinate system according to the pre-defined transformation relationship.

[0058] In this embodiment, the distance detection module is used to detect the distance between the wire harness to be cut and the distance measuring sensor at multiple detection positions along the circumference of the annular cutting device before cutting the outer layer structure of the wire harness, and to obtain the scanning radial distance value J. k Record each detection location, where K represents the sequence number of the detection location.

[0059] More specifically, in the distance detection module, the scanning radial distance value J is detected and obtained using a ranging scanning unit. k The detection starting point is the same as the cutting starting point of the cutting unit in the ring cutting equipment. The maximum value of K is set according to the actual detection requirements. The starting point and ending point of the cutting position are the same point.

[0060] More specifically, as shown in Figure 3, the ranging scanning unit includes a first moving block 4, a first drive motor 41, and a ranging sensor 5. The first moving block 4 is sleeved on the annular gear ring 6 in the annular cutting device and is slidably connected to the annular gear ring 6. The first drive motor 41 is located outside the first moving block 4, and its output end is provided with a gear. The gear meshes with the annular gear ring 6 to drive the first moving block 4 to make a circular motion along the annular gear ring 6. The ranging sensor 5 is installed inside the first moving block 4, and the laser emitted by it is along the radial direction of the annular gear ring 6 and is coplanar with the cutting disk 72 in the cutting unit. The cutting disk 72 is regarded as a circular plane.

[0061] It should be noted that, as shown in Figure 3, the ranging sensor 5 is a laser ranging sensor, and multiple detection positions are evenly distributed on the annular toothed ring 6. The starting point of the detection position in Figure 3 is marked as the 0° detection position, the detection direction is clockwise, the central angle between adjacent detection positions is 3°, the second detection position is the 3° detection position, the third detection position is the 6° detection position, and so on.

[0062] In this embodiment, the cutting distance adjustment module is used to adjust the cutting distance according to the outer layer structure thickness L1 of the wire harness and the scanning radial distance value J. k When cutting the outer layer structure of the wire harness, the position of the cutting disc in the cutting unit is adjusted, thereby adjusting the cutting distance.

[0063] More specifically, the specific processing procedure in the cutting distance adjustment module is as follows:

[0064] S31: Based on the outer layer structure thickness L1 of the wire harness and the scanning radial distance J k Calculate the radial distance C between the ranging sensor and the surface of the wire core at the corresponding position. k :

[0065] C k =L1+J k ;

[0066] S32: The radial distance R between the center point P of the cutting disc and the inner wall of the annular gear ring, based on the preset reference cutting distance. P And the radial distance R0 between the ranging sensor and the inner wall of the ring gear, calculate the radial distance adjustment T of the cutting disc at each detection position. k :

[0067] T k =C k -(R) P -R0);

[0068] S33: Adjustment amount T based on the radial distance of the cutting disc at each detection position. k The sign and magnitude of the value are used to adjust the position of the cutting disc center P at each detection position during the cutting of the outer layer structure of the wire harness. This allows for adjustment of the cutting distance during a single cutting operation.

[0069] More specifically, in S32, under the preset reference cutting distance, the radial distance R between the center point P of the cutting disk and the inner wall of the annular toothed ring at each cutting position during a single wire harness outer layer structure cutting operation. P All values ​​are fixed, and the radial distance R0 between the ranging sensor and the inner wall of the ring gear is also a fixed value.

[0070] More specifically, in S33, the radial distance adjustment amount T k The sign indicates the adjustment direction. A positive sign means the center point P of the cutting disc should be moved radially inward, and a negative sign means the center point P of the cutting disc should be moved radially outward. The moving distance is the radial distance adjustment amount T. k The numerical value.

[0071] More specifically, in S33, as shown in Figure 3, the position adjustment unit includes an adjustment cylinder 8, which is radially arranged along the annular gear ring 6, and the cylinder column is on the same straight line as the center point P of the cutting disk 72 in the cutting unit. The cylinder column of the adjustment cylinder 8 is connected to the cutting motor 71 in the cutting unit, and the cutting disk 72 is connected to the output end of the cutting motor 71. By adjusting the cylinder 8, the position of the cutting disk 72 can be adjusted, thereby adjusting the radial distance of the center point P of the cutting disk 72, and realizing the adjustment of the cutting distance (i.e., the cutting depth).

[0072] It should be noted that, in this embodiment, as shown in Figure 3, both the cutting motor 71 and the adjusting cylinder 8 are mounted on the second moving block 9. The second moving block 9 is sleeved on the annular gear ring 6 in the annular cutting device and is slidably connected to the annular gear ring 6. A second drive motor 91 is mounted on the second moving block 9, and a gear is provided at its output end. The gear meshes with the annular gear ring 6 for transmission. When the ranging scanning unit performs detection, the second moving block 9 is controlled to move to avoid interference with the detection process of the ranging scanning unit. When the distance detection module and the cutting distance adjustment module are working, both ends of the wire harness to be cut are clamped and positioned by fixtures.

[0073] In this embodiment, an intelligent parameter optimization method for a wire harness production line is also provided, which optimizes the cutting distance using the aforementioned optimization system, and includes the following steps:

[0074] S1: Take a picture of the cross-section of the cut wire harness to obtain the cross-section image of the wire harness, and preprocess the cross-section image of the wire harness to obtain the preprocessed cross-section image of the wire harness;

[0075] S2: Detect the thickness of the outer layer structure of the wire harness in the preprocessed wire harness cross-sectional image and obtain the outer layer structure thickness L1 of the wire harness;

[0076] S3: Before cutting the outer layer structure of the wire harness, the distance between the wire harness to be cut and the distance measuring sensor in the circular cutting equipment is detected at multiple detection positions along the circumference of the circular cutting equipment to obtain the scanning radial distance value J. k And record each detection location;

[0077] S4: Based on the outer layer thickness L1 of the wire harness and the scanning radial distance J k When cutting the outer layer structure of the wire harness, the position of the cutting disc in the cutting unit is adjusted at each detection position, thereby adjusting the cutting distance.

[0078] The specific details of the above steps can be found in the corresponding descriptions of each module in the intelligent parameter optimization system for wire harness production lines, and will not be repeated here.

[0079] In summary, the intelligent parameter optimization method and system for wire harness production lines described above captures images of the cut wire harness cross-section to obtain an image of the wire harness cross-section. Based on this image, image processing techniques are used to obtain a more accurate thickness of the outer layer structure of the wire harness, while also reducing labor costs to some extent. By scanning to obtain multiple radial distance values ​​of the wire harness to be cut before cutting the outer layer structure, and then adjusting the position of the cutting disc in the cutting unit at each detection position based on these radial distance values ​​during the cutting process, the cutting distance can be adjusted. This solves the problem of easily damaging the wire core when using a fixed cutting distance in the prior art.

[0080] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0081] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0082] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intelligent parameter optimization system for wire harness production lines, characterized in that, include: The system includes an image acquisition module, a thickness detection module, a distance detection module, and a cutting distance adjustment module. The image acquisition module captures images of the cut wire harness cross-section, obtains the cross-sectional image, and preprocesses the image to obtain a preprocessed cross-sectional image. The thickness detection module detects the thickness of the outer layer structure of the wire harness in the preprocessed cross-sectional image, obtaining the outer layer structure thickness L1. The distance detection module detects the distance between the wire harness to be cut and the distance sensor at multiple detection positions along the circumference of the annular cutting device before cutting the outer layer structure, obtaining the scanning radial distance value J. k The detection positions are recorded, where K represents the sequence number of the detection position; the cutting distance adjustment module is used to adjust the cutting distance according to the outer layer structure thickness L1 of the wire harness and the scanning radial distance value J. k During the cutting of the outer layer structure of the wire harness, the position of the cutting disk in the cutting unit is adjusted to adjust the cutting distance. The thickness detection module includes a core detection unit, a protective layer outer contour detection unit, and a thickness acquisition unit. The core detection unit detects the cores in the preprocessed wire harness cross-sectional image using a trained core target detection model, obtains the core detection frame and its position information, and then detects and identifies the outer contour of the core in the core detection frame to obtain the coordinates of each point on the outer contour line. The protective layer outer contour detection unit detects and identifies the outer contour of the protective layer in the preprocessed wire harness cross-sectional image to obtain the coordinates of each point on the outer contour line. The thickness acquisition unit calculates the thickness L1 of the outer layer structure of the wire harness based on the coordinates of each point on the outer contour line of the core and the outer contour line of the protective layer.

2. The intelligent parameter optimization system for wire harness production lines according to claim 1, characterized in that, The image acquisition module includes an image capturing unit and a preprocessing unit. The image capturing unit is used to capture the cross-section of the cut wire harness using an industrial camera to obtain a cross-section image of the wire harness. The preprocessing unit is used to perform noise reduction and enhancement processing on the cross-section image of the wire harness to obtain a preprocessed cross-section image of the wire harness.

3. The intelligent parameter optimization system for wire harness production line according to claim 1, characterized in that, The outer layer structure of the wire harness includes an insulation layer and a protective layer, and the thickness of the outer layer structure is the total thickness of the insulation layer and the protective layer.

4. The intelligent parameter optimization system for wire harness production line according to claim 1, characterized in that, In the core detection unit, the specific processing steps are as follows: S11: The core in the preprocessed wire bundle cross-section image is detected by the trained core target detection model to obtain the core detection box and the coordinates of its upper left and lower right corners; S12: The positions of each edge of the core detection box in the image are determined according to the coordinates of the upper left and lower right corners of the core detection box, and the area enclosed by the core detection box is determined as the core outer contour detection area; S13: The core outer contour inside the core outer contour detection area is detected and identified using the contour detection function in OpenCV, and the coordinates of each point on the core outer contour line are obtained.

5. The intelligent parameter optimization system for wire harness production line according to claim 4, characterized in that, In the thickness acquisition unit, the specific processing steps are as follows: S21: Determine the coordinates of the center point of the wire core detection frame based on the coordinates of its upper left and lower right corners. The center point is denoted as Z. S22: Draw two mutually perpendicular straight lines through the center point Z. One line is parallel to the x-axis of the image and intersects the outer contour of the wire core at points M1 and M2, and the outer contour of the protective layer at points N1 and N2, respectively. The other line is parallel to the y-axis of the image and intersects the outer contour of the wire core at points M3 and M4, and the outer contour of the protective layer at points N3 and N4, respectively. S23: Calculate the lengths of line segments M1N1, M2N2, M3N3, and M4N4 in the image and then calculate their arithmetic average to obtain the average value L. avg , average value L avg The thickness L1 of the outer layer structure of the wire harness in the world coordinate system is obtained by transforming the image coordinate system and the world coordinate system according to the pre-defined transformation relationship.

6. The intelligent parameter optimization system for wire harness production line according to claim 5, characterized in that, In the distance detection module, the ranging scanning unit includes a first moving block, a first drive motor, and a ranging sensor. The first moving block is sleeved on the annular gear ring in the annular cutting device and is slidably connected to the annular gear ring. The first drive motor is located outside the first moving block, and its output end is provided with a first gear. The first gear meshes with the annular gear ring to drive the first moving block to make circumferential motion along the annular gear ring. The ranging sensor is installed inside the first moving block, and the laser emitted by it is along the radial direction of the annular gear ring and is coplanar with the cutting disk in the cutting unit. The cutting disk is regarded as a circular plane.

7. The intelligent parameter optimization system for wire harness production line according to claim 6, characterized in that, The specific processing procedure in the cutting distance adjustment module is as follows: S31: Based on the outer layer structure thickness L1 of the wire harness and the scanning radial distance value J k Calculate the radial distance C between the ranging sensor and the surface of the wire core at the corresponding position. k :C k =L1+J k S32: The radial distance R between the center point P of the cutting disc and the inner wall of the annular gear ring, based on the preset reference cutting distance. P And the radial distance R0 between the ranging sensor and the inner wall of the ring gear, calculate the radial distance adjustment T of the cutting disc at each detection position. k :T k =C k -(R) P -R0) where, R0, R P All are fixed values; S33: Adjustment amount T based on the radial distance of the cutting disc at each detection position. k The sign and magnitude of the value are used to adjust the position of the cutting disk center point P at each detection position during the cutting of the outer layer structure of the wire harness. This allows for adjustment of the cutting distance during a single cutting operation. In S33, the radial distance adjustment amount T... k The sign indicates the adjustment direction. A positive sign means the center point P of the cutting disc should be moved radially inward, and a negative sign means the center point P of the cutting disc should be moved radially outward. The moving distance is the radial distance adjustment amount T. k The numerical value.

8. The intelligent parameter optimization system for wire harness production line according to claim 7, characterized in that, In S33, the position adjustment unit includes an adjustment cylinder, which is arranged radially along the annular gear ring, and the axis of its cylinder column is on the same straight line as the center point P of the cutting disc in the cutting unit. The position of the cutting disc can be adjusted by adjusting the adjustment cylinder, thereby adjusting the radial distance of the center point P of the cutting disc and realizing the adjustment of the cutting distance.

9. A method for intelligent parameter optimization in wire harness production lines, characterized in that, Used to optimize the cutting distance using the optimization system as described in any one of claims 1-8 Includes the following steps: S1: Take a picture of the cross-section of the cut wire harness to obtain an image of the wire harness cross-section, and preprocess the image to obtain a preprocessed image of the wire harness cross-section; S2: Detect the thickness of the outer layer structure of the wire harness in the preprocessed image of the wire harness cross-section to obtain the thickness L1 of the outer layer structure; S3: Before cutting the outer layer structure of the wire harness, detect the distance between the wire harness to be cut and the distance measuring sensor at multiple detection positions along the circumference of the ring cutting equipment to obtain the scanning radial distance value J. k Record each detection location; S4: Based on the outer layer structure thickness L1 of the wire harness and the scanning radial distance J... k When cutting the outer layer structure of the wire harness, the position of the cutting disc in the cutting unit is adjusted at each detection position, thereby adjusting the cutting distance.

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