An intelligent monitoring and management system for wiring harness production lines

Abstract

The present invention relates to the technical field of wire harness production, and specifically discloses an intelligent monitoring and management system for a wire harness production line, including a wire harness terminal crimping process database module, a wire harness terminal crimping text data acquisition module, a wire harness terminal shape text data processing module, a wire harness terminal pressure text data processing module, a wire harness terminal crimping process analysis module, an error correction analysis and adjustment module, a wire harness terminal crimping management judgment module, and a wire harness terminal crimping human-computer interaction module; the present invention collects and pre-processes text data of the wire harness terminal crimping process link, obtains a first monitoring indicator and a second monitoring indicator by analyzing the wire harness terminal shape and the wire harness terminal crimping pressure, and can timely detect defective products and trigger an alarm shutdown by real-time monitoring of terminal shape changes and pressure changes during the terminal crimping process, thereby reducing the time and labor cost of manual inspection and significantly improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wire harness production, and in particular to an intelligent monitoring and management system for a wire harness production line. Background Art

[0002] In the rapid development of modern manufacturing industry, the quality of wire harness, as an indispensable bridge inside electronic equipment, has attracted much attention. With the rapid progress in the fields of automobiles, communications and consumer electronics, higher requirements are placed on the electrical connection performance and mechanical strength of wire harness. Wire harness terminal crimping, as a key link in the production process, directly determines the overall performance and reliability of the wire harness. Especially in the automotive industry, facing the increasingly complex electrical systems, the quality of the terminal crimping process is even more important. It not only affects the connection stability of the wire harness, but also profoundly affects the performance and service life of the final product.

[0003] In traditional wire harness production lines, the monitoring and management system of the terminal crimping process mainly relies on manual operation and simple mechanical detection equipment. Workers evaluate the crimping quality through visual inspection and manual measurement. At the same time, some production lines are equipped with some basic sensors to monitor parameters such as pressure and temperature during the crimping process; although the wire harness terminal crimping process can be monitored to a certain extent.

[0004] However, there are still some shortcomings in its actual use, such as: first, the traditional monitoring and management method of the terminal crimping process relies on manual visual inspection and manual testing, which is not only time-consuming and labor-intensive, but also prone to missed detection or misjudgment due to human factors; secondly, manual inspection has a lag, and it is difficult to promptly discover and correct problems in the crimping process, thus affecting production efficiency and product quality; with the increase in labor costs, the cost of manual inspection is also increasing, bringing a greater economic burden to enterprises; in addition, the traditional monitoring and management method of the terminal crimping process cannot analyze and warn the data in real time, and cannot promptly discover problems in the terminal crimping process of wire harness production and adjust its production process parameters. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an intelligent monitoring and management system for a wire harness production line to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an intelligent monitoring and management system for a wire harness production line, comprising a wire harness terminal crimping process database module, a wire harness terminal crimping text data acquisition module, a wire harness terminal shape text data processing module, a wire harness terminal pressure text data processing module, a wire harness terminal crimping process analysis module, an error correction analysis and adjustment module, a wire harness terminal crimping management judgment module and a wire harness terminal crimping human-computer interaction module.

[0007] Wire harness terminal crimping process database module: used to obtain text data of the target wire harness terminal crimping process link and obtain the wire harness terminal crimping process database;

[0008] A wiring harness terminal crimping text data acquisition module: used to obtain the first wiring harness terminal shape monitoring text data and the second wiring harness terminal pressure monitoring text data from the wiring harness terminal crimping process database;

[0009] A wiring harness terminal shape text data processing module: used to process the first wiring harness terminal shape monitoring text data and then import it into the wiring harness terminal deformation model to obtain a first monitoring index for managing the wiring harness terminal crimping process;

[0010] A wiring harness terminal pressure text data processing module: used to process the second wiring harness terminal pressure monitoring text data and then import it into the wiring harness terminal crimping pressure model to obtain a second monitoring index for managing the wiring harness terminal crimping process;

[0011] Wire harness terminal crimping process analysis module: by comparing the first monitoring index and the second monitoring index with the preset threshold value, the third monitoring index of the wire harness terminal crimping process is analyzed and obtained;

[0012] Error correction analysis and adjustment module: used to import the third monitoring index into the error analysis mathematical model, and analyze and correct the error of the calculation results;

[0013] Wire harness terminal crimping management and judgment module: used to compare and judge the third monitoring index after error correction by the error correction analysis and adjustment module with the preset threshold value, automatically trigger an alarm for abnormal information, and transmit the abnormal information to the operation terminal or remote monitoring center;

[0014] Wire harness terminal crimping human-computer interaction module: a graphical user interface for providing monitoring and analysis results and receiving alarm information, and providing management personnel with management strategies for the wire harness production terminal crimping process.

[0015] Preferably, the first wiring harness terminal shape monitoring text data includes image data of the wiring harness terminal before and after crimping, image data of the wiring harness terminal before crimping at coordinates (x, y) The grayscale value at the coordinates of the image after the harness terminal is crimped (x, y) The grayscale value at the point, the width of the wiring harness terminal image, and the height of the wiring harness terminal image; the second wiring harness terminal pressure monitoring text data includes the wiring harness terminal crimping force, the wiring harness terminal width, the wiring harness terminal thickness, the elastic modulus of the terminal material, the wiring harness terminal crimping pressure value, the crimping height, the standard crimping pressure value, and the standard crimping height.

[0016] Preferably, the first wiring harness terminal shape monitoring text data collection method is: using a 5-megapixel industrial camera to capture terminal images from two angles, front and side, and setting exposure time and gain for the camera.

[0017] Preferably, the specific steps of obtaining the first monitoring index by the wiring harness terminal deformation model are as follows:

[0018] A1: Use OpenCV The library performs image preprocessing, improves the visual effect of the image by contrast adjustment or histogram equalization, and performs image enhancement; uses median filtering or Gaussian filtering to remove noise from the image;

[0019] A2: Align the images before and after crimping in the same coordinate system;

[0020] A3: Calculate the first monitoring indicator, the deformation coefficient of the wiring harness terminal. The calculation model is as follows:

[0021] ,

[0022] in, FMI It is the first monitoring indicator for managing the crimping process of wire harness terminals. I 0 (x, y) Represented as the image of the wire harness terminal before crimping at coordinates (x, y) The gray value at I(x, y) Represents the image of the wire harness terminal after crimping at coordinates (x, y) The gray value at W Expressed as the width of the harness terminal image, H Expressed as the height of the harness terminal image.

[0023] Preferably, the specific steps of obtaining the second monitoring index by the wiring harness terminal crimping pressure model are as follows:

[0024] B1: Calculate the crimping stress of the wiring harness terminal. The calculation model is as follows:

[0025] ,

[0026] in, Cs Expressed as the crimping stress of the harness terminal, F Expressed as the crimping force of the harness terminal, where A = Tw × Tt It is expressed as the contact area between the terminal and the wire. Tw Expressed as the width of the harness terminal, Tt Expressed as the thickness of the harness terminal;

[0027] B2: According to Hooke's law, the crimping strain is calculated by the crimping stress and elastic modulus. The calculation model is as follows:

[0028] ,

[0029] in, Cc Expressed as crimp strain, E Expressed as the elastic modulus of the terminal material;

[0030] B3: Calculate the second monitoring indicator, the crimping pressure coefficient of the wiring harness terminal. The calculation model is as follows:

[0031] ,

[0032] in, SMI It is the second monitoring indicator for managing the crimping process of wire harness terminals. Cc Expressed as crimp strain, P Expressed as the crimping pressure value of the harness terminal, Ch Expressed as crimp height, P 0 , Ch 0 They are respectively represented by the standard crimping pressure value and standard crimping height extracted from the crimping process database of the wire harness terminal. e is expressed as a natural constant, η Expressed as the correction factor of the second monitoring indicator.

[0033] Preferably, the wiring harness terminal crimping process analysis module compares and determines the first monitoring index and the second monitoring index with the preset threshold value in a specific manner as follows:

[0034] Extracting a first monitoring index, if the first monitoring index is greater than a preset first threshold value, it is determined that there is an abnormality in the shape of the terminal in the wiring harness terminal crimping process, the abnormal result is sent to the operator and the management personnel, and the automatic adjustment of the process parameters is started; otherwise, it indicates that there is no abnormality in the shape of the terminal in the wiring harness terminal crimping process;

[0035] Extract the second monitoring indicator. If the second monitoring indicator is greater than the preset second threshold value, it is judged that there is an abnormality in the terminal crimping pressure in the wire harness terminal crimping link. The abnormal result is sent to the operator and management personnel, and the automatic adjustment of the process parameters is started. Otherwise, it indicates that there is no abnormality in the terminal crimping pressure in the wire harness terminal crimping link.

[0036] Preferably, the mathematical model of the third monitoring indicator is as follows:

[0037] ,

[0038] in, TMI Represented as the third monitoring indicator, FMI It is the first monitoring indicator for managing the crimping process of wire harness terminals. SMI It is represented as the second monitoring index for managing the wire harness terminal crimping process, and φ is represented as other influencing factors of the wire harness terminal crimping process.

[0039] Preferably, the wiring harness terminal crimping management and judgment module compares and analyzes the third monitoring index after error correction by the error correction analysis and adjustment module with a preset threshold value in a specific manner:

[0040] The third monitoring indicator is extracted. If the third monitoring indicator is greater than the preset third threshold value, it is judged that an abnormality occurs in the crimping process of the wire harness terminal. The abnormal result is sent to the operator and the manager, and the wire harness corresponding to the abnormal data is marked as an unqualified crimping product. The unqualified crimping products are reworked and readjusted for production. Otherwise, it indicates that there is no abnormality in the crimping process of the wire harness terminal. The wire harness corresponding to the normal data is marked as a qualified crimping product, and the qualified crimping products are put into the next process production link.

[0041] Technical effects and advantages of the present invention:

[0042] 1. The present invention can timely detect defective products and trigger alarm shutdown by real-time monitoring of pressure changes during the terminal crimping process, thereby reducing the time and labor cost of manual inspection and significantly improving production efficiency. At the same time, the system can automatically optimize and process data, making the production process smoother and avoiding production delays caused by the accumulation of defective products.

[0043] 2. The present invention ensures that the crimping quality of each terminal meets the standard requirements through precise data collection and intelligent analysis, effectively avoiding the flow of unqualified products into the next process, thereby improving the qualified rate of the final product;

[0044] 3. The present invention reduces the reliance on manual inspection and saves human resource costs through automatic monitoring and abnormal warning functions; at the same time, by optimizing the crimping process parameters, it reduces the waste of raw materials and further reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0046] Figure 1 It is a schematic diagram of the overall structure of the system of the present invention.

[0047] Figure 2 It is a schematic diagram of the method flow of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] See also Figure 1 As shown, the present invention provides an intelligent monitoring and management system for a wire harness production line, including a wire harness terminal crimping process database module, a wire harness terminal crimping text data acquisition module, a wire harness terminal shape text data processing module, a wire harness terminal pressure text data processing module, a wire harness terminal crimping process analysis module, an error correction analysis and adjustment module, a wire harness terminal crimping management judgment module and a wire harness terminal crimping human-computer interaction module.

[0050] The wire harness terminal crimping process database module is respectively connected to the wire harness terminal crimping process database module, the wire harness terminal crimping process analysis module and the wire harness terminal crimping management judgment module; the output end of the wire harness terminal crimping text data acquisition module is respectively connected to the input end of the wire harness terminal shape text data processing module and the input end of the wire harness terminal pressure text data processing module; the output end of the wire harness terminal shape text data processing module is connected to the input end of the wire harness terminal crimping process analysis module; the output end of the wire harness terminal pressure text data processing module is connected to the input end of the wire harness terminal crimping process analysis module; the output end of the wire harness terminal crimping process analysis module is connected to the input end of the error correction analysis and adjustment module; the output end of the error correction analysis and adjustment module is connected to the input end of the wire harness terminal crimping management judgment module; the output end of the wire harness terminal crimping management judgment module is connected to the input end of the wire harness terminal crimping human-computer interaction module.

[0051] The wiring harness terminal crimping process database module is used to obtain text data for the target wiring harness terminal crimping process link to obtain a wiring harness terminal crimping process database;

[0052] In this embodiment, it should be specifically explained that the wire harness terminal crimping process database module also stores the wire harness production requirements, production standards, operating specifications of the wire harness terminal crimping process, preset wire harness terminal threshold settings, and preset wire harness terminal crimping pressure threshold settings for each production batch, and each wire harness database unit has version control and history recording functions.

[0053] The wire harness terminal crimping text data acquisition module is used to obtain the first wire harness terminal shape monitoring text data and the second wire harness terminal pressure monitoring text data from the wire harness terminal crimping process database;

[0054] In this embodiment, it should be specifically explained that the first wiring harness terminal shape monitoring text data includes image data of the wiring harness terminal before and after crimping, image data of the wiring harness terminal before crimping at coordinates (x, y) The grayscale value at the coordinates of the image after the harness terminal is crimped (x, y) The grayscale value at , the width of the harness terminal image, and the height of the harness terminal image;

[0055] The second wiring harness terminal pressure monitoring text data includes wiring harness terminal crimping force, wiring harness terminal width, wiring harness terminal thickness, elastic modulus of terminal material, wiring harness terminal crimping pressure value, crimping height, standard crimping pressure value and standard crimping height;

[0056] In this embodiment, it should be specifically explained that the first wiring harness terminal shape monitoring text data collection method is: using a 5-megapixel industrial camera to capture terminal images from the front and side angles, and setting appropriate exposure time and gain for the camera to ensure clear images.

[0057] The wiring harness terminal shape text data processing module is used to process the first wiring harness terminal shape monitoring text data and then import it into the wiring harness terminal deformation model to obtain a first monitoring index for managing the wiring harness terminal crimping process;

[0058] In this embodiment, it should be specifically explained that the specific steps of obtaining the first monitoring index by the wiring harness terminal deformation model are as follows:

[0059] A1: Use the OpenCV library to preprocess the image, improve the visual effect of the image by contrast adjustment or histogram equalization, and perform image enhancement; use median filtering or Gaussian filtering to remove noise from the image;

[0060] A2: Align the images before and after crimping in the same coordinate system;

[0061] A3: Calculate the first monitoring indicator, the deformation coefficient of the wiring harness terminal. The calculation model is as follows:

[0062] ,

[0063] in, FMI It is the first monitoring indicator for managing the crimping process of wire harness terminals. I 0 (x, y) Represented as the image of the wire harness terminal before crimping at coordinates (x, y) The gray value at I(x, y) Represents the image of the wire harness terminal after crimping at coordinates (x, y) The gray value at W Expressed as the width of the harness terminal image, HExpressed as the height of the harness terminal image.

[0064] The wiring harness terminal pressure text data processing module is used to process the second wiring harness terminal pressure monitoring text data and then import it into the wiring harness terminal crimping pressure model to obtain a second monitoring indicator for managing the wiring harness terminal crimping process;

[0065] In this embodiment, it should be specifically explained that the specific steps of obtaining the second monitoring index by the wiring harness terminal crimping pressure model are as follows:

[0066] B1: Calculate the crimping stress of the wiring harness terminal. The calculation model is as follows:

[0067] ,

[0068] in, Cs Expressed as the crimping stress of the harness terminal, F Expressed as the crimping force of the harness terminal, where A = Tw × Tt It is expressed as the contact area between the terminal and the wire. Tw Expressed as the width of the harness terminal, Tt Expressed as the thickness of the harness terminal;

[0069] B2: According to Hooke's law, the crimping strain is calculated by the crimping stress and elastic modulus. The calculation model is as follows:

[0070] ,

[0071] in, Cc Expressed as crimp strain, E Expressed as the elastic modulus of the terminal material;

[0072] B3: Calculate the second monitoring indicator, the crimping pressure coefficient of the wiring harness terminal. The calculation model is as follows:

[0073] ,

[0074] in, SMI It is the second monitoring indicator for managing the crimping process of wire harness terminals. Cc Expressed as crimp strain, P Expressed as the crimping pressure value of the harness terminal, Ch Expressed as crimp height, P 0 , Ch 0 They are respectively represented by the standard crimping pressure value and standard crimping height extracted from the crimping process database of the wire harness terminal. e is expressed as a natural constant, η Expressed as the correction factor of the second monitoring indicator.

[0075] The wiring harness terminal crimping process analysis module compares the first monitoring index and the second monitoring index with a preset threshold value, and then analyzes and obtains a third monitoring index of the wiring harness terminal crimping process;

[0076] In this embodiment, it should be specifically explained that the specific manner in which the wiring harness terminal crimping process analysis module compares and determines the first monitoring indicator and the second monitoring indicator with the preset threshold value is:

[0077] Extracting a first monitoring index, if the first monitoring index is greater than a preset first threshold value, it is determined that there is an abnormality in the shape of the terminal in the wiring harness terminal crimping process, the abnormal result is sent to the operator and the management personnel, and the automatic adjustment of the process parameters is started; otherwise, it indicates that there is no abnormality in the shape of the terminal in the wiring harness terminal crimping process;

[0078] Extract the second monitoring index. If the second monitoring index is greater than a preset second threshold, it is determined that the terminal crimping pressure in the wiring harness terminal crimping process is abnormal. The abnormal result is sent to the operator and the management personnel, and the automatic adjustment process parameter link is started. Otherwise, it indicates that there is no abnormality in the terminal crimping pressure in the wiring harness terminal crimping process.

[0079] In this embodiment, it should be specifically explained that the mathematical model of the third monitoring indicator is as follows:

[0080] ,

[0081] in, TMI Represented as the third monitoring indicator, FMI It is the first monitoring indicator for managing the crimping process of wire harness terminals. SMI It is represented as the second monitoring index for managing the wire harness terminal crimping process, and φ is represented as other influencing factors of the wire harness terminal crimping process.

[0082] The error correction analysis and adjustment module is used to introduce the third monitoring index into the error correction analysis mathematical model, and analyze and correct the error of the calculation results;

[0083] In this embodiment, it should be specifically explained that the error analysis mathematical model is as follows:

[0084] ,

[0085] in, It is expressed as the change in variable y between period t and period t-1, that is, y t -y t-1 , reflects the short-term fluctuation of y, α is represented as the intercept term, when all explanatory variables are 0, The expected value of It represents the impact of short-term changes in variable x on short-term changes in y. β is the slope coefficient of short-term changes in x on short-term changes in y. is expressed as an error correction term to capture the impact of long-term equilibrium relationships on short-term dynamics, It is expressed as the coefficient of x in the long-term equilibrium relationship, indicating that in the long run, for every unit change in x, y will change by an average of δ units. It is represented as a random error term, which indicates the effect of other factors not included in the model on , which is usually assumed to have zero mean, homoskedasticity, and serial uncorrelation.

[0086] The wiring harness terminal crimping management and judgment module is used to compare and judge the third monitoring index after the error correction of the error correction analysis and adjustment module with a preset threshold value, automatically trigger an alarm for abnormal information, and transmit the abnormal information to the operation terminal or the remote monitoring center;

[0087] In this embodiment, it should be specifically explained that the specific manner in which the wiring harness terminal crimping management and judgment module compares and analyzes the third monitoring index after error correction by the error correction analysis and adjustment module with a preset threshold is:

[0088] The third monitoring indicator is extracted. If the third monitoring indicator is greater than the preset third threshold value, it is judged that an abnormality occurs in the crimping process of the wire harness terminal. The abnormal result is sent to the operator and the manager, and the wire harness corresponding to the abnormal data is marked as an unqualified crimping product. The unqualified crimping products are reworked and readjusted for production. Otherwise, it indicates that there is no abnormality in the crimping process of the wire harness terminal. The wire harness corresponding to the normal data is marked as a qualified crimping product, and the qualified crimping products are put into the next process production link.

[0089] The wire harness terminal crimping human-computer interaction module is used to provide monitoring and analysis results and a graphical user interface for receiving alarm information, and to provide management personnel with management strategies for the wire harness production terminal crimping process.

[0090] See also Figure 2 As shown, the present invention provides an intelligent monitoring and management method for a wire harness production line, comprising the following steps: S1: establishing a wire harness terminal crimping process database, S2: collecting wire harness terminal crimping text data, S3: processing wire harness terminal shape text data, S4: processing wire harness terminal pressure text data, S5: analyzing the wire harness terminal crimping process, S6: performing error correction analysis and adjustment, S7: performing wire harness terminal crimping management judgment, and S8: performing a wire harness terminal crimping human-computer interaction module.

[0091] S1: Establishing a wire harness terminal crimping process database: acquiring text data for at least one target wire harness terminal crimping process link to obtain a wire harness terminal crimping process database;

[0092] S2: collecting wire harness terminal crimping text data: acquiring first wire harness terminal shape monitoring text data and second wire harness terminal pressure monitoring text data from a wire harness terminal crimping process database;

[0093] S3: Processing the wire harness terminal shape text data: processing the first wire harness terminal shape monitoring text data and then importing it into the wire harness terminal deformation model to obtain a first monitoring index for managing the wire harness terminal crimping process;

[0094] S4: Processing the wire harness terminal pressure text data: processing the second wire harness terminal pressure monitoring text data and importing it into the wire harness terminal crimping pressure model to obtain a second monitoring index for managing the wire harness terminal crimping process;

[0095] S5: Analyzing the crimping process of the wiring harness terminal: After comparing and judging the first monitoring index and the second monitoring index with the preset threshold value, a third monitoring index of the crimping process of the wiring harness terminal is obtained through analysis;

[0096] S6: Perform error correction analysis and adjustment: import the third monitoring indicator into the error analysis mathematical model, and analyze and correct the calculation results;

[0097] S7: Conducting management and judgment of the crimping of the wiring harness terminals: comparing and analyzing the third monitoring index after the error correction of the error correction analysis and adjustment module with the preset threshold, automatically triggering an alarm for abnormal information, and transmitting the abnormal information to the operation terminal or remote monitoring center;

[0098] S8: Human-computer interaction module for crimping of wire harness terminals: provides a graphical user interface for monitoring and analyzing results and receiving alarm information, and provides management personnel with management strategies for the crimping process of wire harness production terminals.

[0099] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0100] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An intelligent monitoring and management system for a wiring harness production line, characterized in that: include: Wire harness terminal crimping process database module: used to obtain text data of the target wire harness terminal crimping process link and obtain the wire harness terminal crimping process database; A wiring harness terminal crimping text data acquisition module: used to obtain the first wiring harness terminal shape monitoring text data and the second wiring harness terminal pressure monitoring text data from the wiring harness terminal crimping process database; A wiring harness terminal shape text data processing module: used to process the first wiring harness terminal shape monitoring text data and then import it into the wiring harness terminal deformation model to obtain a first monitoring index for managing the wiring harness terminal crimping process; The specific steps of obtaining the first monitoring index by the wiring harness terminal deformation model are as follows: A1: Use OpenCV The library performs image preprocessing, improves the visual effect of the image by contrast adjustment or histogram equalization, and performs image enhancement; uses median filtering or Gaussian filtering to remove noise from the image; A2: Align the images before and after crimping in the same coordinate system; A3: Calculate the first monitoring indicator, the deformation coefficient of the wiring harness terminal. The calculation model is as follows: ， in, FMI It is the first monitoring indicator for managing the crimping process of wire harness terminals. I 0 (x, y) Represented as the image of the wire harness terminal before crimping at coordinates (x, y) The gray value at I(x,y) Represents the image of the wire harness terminal after crimping at coordinates (x, y) The gray value at W Expressed as the width of the harness terminal image, H It is expressed as the height of the harness terminal image; A wiring harness terminal pressure text data processing module: used to process the second wiring harness terminal pressure monitoring text data and then import it into the wiring harness terminal crimping pressure model to obtain a second monitoring index for managing the wiring harness terminal crimping process; The specific steps of obtaining the second monitoring index by the wiring harness terminal crimping pressure model are as follows: B1: Calculate the crimping stress of the wiring harness terminal. The calculation model is as follows: ,in, Cs Expressed as the crimping stress of the harness terminal, F Expressed as the crimping force of the harness terminal, where A=Tw×Tt It is expressed as the contact area between the terminal and the wire. T Expressed as the width of the harness terminal, Tt Expressed as the thickness of the harness terminal; B2: According to Hooke's law, the crimping strain is calculated by the crimping stress and elastic modulus. The calculation model is as follows: ,in, Cc Expressed as crimp strain, E Expressed as the elastic modulus of the terminal material; B3: Calculate the second monitoring indicator, the crimping pressure coefficient of the wiring harness terminal. The calculation model is as follows: ， in, SMI It is the second monitoring indicator for managing the crimping process of wire harness terminals. Cc Expressed as crimp strain, P Expressed as the crimping pressure value of the harness terminal, Ch Expressed as crimp height, P 0 , Ch 0 They are respectively represented by the standard crimping pressure value and standard crimping height extracted from the crimping process database of the wire harness terminal. e is expressed as a natural constant, η It is expressed as the correction factor of the second monitoring indicator; Wire harness terminal crimping process analysis module: by comparing the first monitoring index and the second monitoring index with the preset threshold value, the third monitoring index of the wire harness terminal crimping process is analyzed and obtained; Error correction analysis and adjustment module: used to import the third monitoring index into the error analysis mathematical model, and analyze and correct the error of the calculation results; Wire harness terminal crimping management and judgment module: used to compare and judge the third monitoring index after error correction by the error correction analysis and adjustment module with the preset threshold value, automatically trigger an alarm for abnormal information, and transmit the abnormal information to the operation terminal or remote monitoring center; Wire harness terminal crimping human-computer interaction module: a graphical user interface for providing monitoring and analysis results and receiving alarm information, and providing management personnel with management strategies for the wire harness production terminal crimping process.

2. The intelligent monitoring and management system for a wiring harness production line according to claim 1 is characterized by: The first wiring harness terminal shape monitoring text data includes image data of the wiring harness terminal before and after crimping, image data of the wiring harness terminal before crimping at coordinates (x, y) The grayscale value at the coordinates of the image after the harness terminal is crimped (x, y) The grayscale value at the point, the width of the wiring harness terminal image, and the height of the wiring harness terminal image; the second wiring harness terminal pressure monitoring text data includes the wiring harness terminal crimping force, the wiring harness terminal width, the wiring harness terminal thickness, the elastic modulus of the terminal material, the wiring harness terminal crimping pressure value, the crimping height, the standard crimping pressure value, and the standard crimping height.

3. The intelligent monitoring and management system for a wiring harness production line according to claim 1 is characterized by: The first wiring harness terminal shape monitoring text data is collected by using a 5-megapixel industrial camera to capture terminal images from the front and side angles, and setting exposure time and gain for the camera.

4. The intelligent monitoring and management system for a wiring harness production line according to claim 1 is characterized by: The specific manner in which the wiring harness terminal crimping process analysis module compares and judges the first monitoring index and the second monitoring index with the preset threshold value is: Extracting a first monitoring index, if the first monitoring index is greater than a preset first threshold value, it is determined that there is an abnormality in the shape of the terminal in the wiring harness terminal crimping process, the abnormal result is sent to the operator and the management personnel, and the automatic adjustment of the process parameters is started; otherwise, it indicates that there is no abnormality in the shape of the terminal in the wiring harness terminal crimping process; Extract the second monitoring indicator. If the second monitoring indicator is greater than the preset second threshold value, it is judged that there is an abnormality in the terminal crimping pressure in the wire harness terminal crimping link. The abnormal result is sent to the operator and management personnel, and the automatic adjustment of the process parameters is started. Otherwise, it indicates that there is no abnormality in the terminal crimping pressure in the wire harness terminal crimping link.

5. The intelligent monitoring and management system for a wiring harness production line according to claim 1 is characterized by: The mathematical model of the third monitoring indicator is as follows: ， in, TMI Represented as the third monitoring indicator, FMI It is the first monitoring indicator for managing the crimping process of wire harness terminals. SMI It is represented as the second monitoring index for managing the wire harness terminal crimping process, and φ is represented as other influencing factors of the wire harness terminal crimping process.

6. The intelligent monitoring and management system for a wiring harness production line according to claim 1 is characterized by: The specific method in which the wiring harness terminal crimping management and judgment module compares and analyzes the third monitoring index after the error correction by the error correction analysis and adjustment module with the preset threshold is: The third monitoring indicator is extracted. If the third monitoring indicator is greater than the preset third threshold value, it is judged that an abnormality occurs in the crimping process of the wire harness terminal. The abnormal result is sent to the operator and the manager, and the wire harness corresponding to the abnormal data is marked as an unqualified crimping product. The unqualified crimping products are reworked and readjusted for production. Otherwise, it indicates that there is no abnormality in the crimping process of the wire harness terminal. The wire harness corresponding to the normal data is marked as a qualified crimping product, and the qualified crimping products are put into the next process production link.

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