Design change based method for developing functional schematic of automotive circuit system

Abstract

The application discloses a design change-based automobile circuit system function schematic diagram development method, which comprises the following steps: obtaining original design change data, pre-classifying the original design change data, standardizing the original design change data, and inputting the original design change data into a design change information preprocessing module; outputting a design change part difference list and a component-terminal definition information change difference list according to BOM table information before and after the design change; outputting a configuration code difference list, a whole vehicle wire harness information difference list and a fuse box difference list required after the design change, establishing a component distribution list before and after the design change and marking the differences, and outputting the whole vehicle wire information after the design change and the component distribution list into a drawing module, and modifying and marking the differences of the system schematic diagram and displaying the system schematic diagram. The application aims at reducing the workload of developers in identifying design change content and the technical difficulty in the identification process, so as to shorten the development cycle, accurately develop the design change point content, guarantee the consistency of the process operation and reduce the development cost.

Description

Technical Field

[0001] This invention relates to the field of automotive aftermarket system functional schematic development, and more specifically, to a method for developing automotive circuit system functional schematics based on design changes. Background Technology

[0002] In the field of automotive product research and development and manufacturing, OEMs continuously optimize and iterate designs throughout the vehicle development cycle. Once the product design enters the engineering verification stage, multiple rounds of design changes are often initiated based on factors such as performance test data, production process requirements, or regulatory compliance.

[0003] After receiving design change information from the OEM, the traditional approach to developing automotive circuit system functional schematics based on design changes primarily involves manually identifying, analyzing, and comparing the design change information input data provided by the customer, identifying change points, and then manually creating corresponding system functional schematic design change development tasks based on these change points. System schematic development is then carried out according to these tasks, and change points are marked to facilitate customer review of the design changes. However, this model has the following shortcomings:

[0004] 1) Change data requires manual interpretation and identification of change points, which involves a large workload, high technical difficulty, and is prone to omissions / comparison errors;

[0005] 2) Manually generating design change content development tasks based on design change points is difficult and requires a high level of skill from personnel;

[0006] 3) Manually marking change points is labor-intensive and prone to omissions, making it difficult for customers to accurately review the change point content.

[0007] 4) The maintenance cycle of the design transformer is too long, making it difficult to meet the current design transformer revision cycle;

[0008] 5) Frequent design changes result in significant cost pressures;

[0009] 6) When manually modifying change points, due to the varying skill levels of personnel and the different modification methods used by individuals, it is extremely easy to miss revisions, make revision errors, or add quality problems unrelated to the design change points.

[0010] Therefore, a method for developing functional schematic diagrams of automotive circuit systems based on design changes is proposed. Summary of the Invention

[0011] This invention provides a method for developing functional schematic diagrams of automotive circuit systems based on design changes, in order to solve the problems of large workload, high technical skill requirements, and long maintenance cycles in the development of functional schematic diagrams of automotive circuit systems based on design changes.

[0012] According to one aspect of the present invention, a method for developing functional schematic diagrams of automotive circuit systems based on design changes is provided, comprising the following steps:

[0013] Step 1) Obtain the original design and transformation data, pre-classify it, standardize the data, and input it into the design and transformation information preprocessing module;

[0014] Step 2) Based on the BOM information before and after the design change, output the design change part difference list and the component-terminal definition information change difference list.

[0015] Step 3) Based on the entered sales configuration table change information and the configuration main function names corresponding to the differences, output the configuration table change difference list and the electrical appliance main function configuration difference list; based on the wiring harness configuration code table change information, perform difference comparison to obtain the wiring harness configuration code table difference list; search in the wiring harness configuration code name-main function configuration name preset relationship database, and output the correspondence between the main function configuration name corresponding to the changed wiring harness configuration code name and the configuration level name and configuration point information; perform consistency verification on the changed configuration level names and configuration point information in the sales configuration table and wiring harness configuration code table, and output the configuration code difference list that needs to be developed after the change;

[0016] Step 4) Obtain a list of line differences before and after the installation based on the wiring harness drawing change information or wiring harness information change list;

[0017] Step 5) Analyze the changed fuse box information, enter it into the fuse box information table before the change, automatically record the modified information, generate the changed fuse box information table, and mark the differences in the changed information to form a fuse box difference list.

[0018] Step 6) Based on the difference list output in Steps 2 to 4, update the whole vehicle wiring information before the change, output the whole vehicle wiring information after the change, and establish a component allocation list before and after the change to mark the differences according to the functional principle content and wiring connection relationship required to be explained in the schematic diagram of each system.

[0019] Step 7) Based on the fuse box information and difference list after the changes in Step 5, the vehicle wiring information after the changes output in Step 6, and the component allocation list, import them into the drawing module to modify the system schematic diagram and display the differences.

[0020] Based on the above scheme, the preferred option is to pre-classify the original design data in step 1). The classification includes changes to BOM information, configuration information, wiring harness drawing information, fuse box information, and component information.

[0021] Based on the above scheme, in step 3), the configuration table information before the change is compared with the information before the change, and a configuration table change difference list is output. Based on the configuration main function name corresponding to the difference point, the main function is searched in the electrical appliance main function configuration electrical appliance attribute library to confirm whether the main function is an electrical appliance function, and an electrical appliance main function configuration difference list is output.

[0022] Based on the above scheme, the preferred method is to obtain a list of line differences before and after the transformer design based on the wiring harness drawing change information. The specific steps include:

[0023] Based on the wiring harness name, extract the basic information of the wiring harness drawing from the corresponding modified wiring harness drawing, and maintain the corresponding pin function definition information along with the connector code and pin number into the modified vehicle wiring harness information table.

[0024] Define whether to develop the corresponding pins in the connector according to the configuration code difference list to be developed, and obtain the line difference list before and after the change.

[0025] Based on the above scheme, in step 4), the basic information of the wiring harness drawing is extracted from the corresponding modified wiring harness drawing according to the wiring harness name, and the basic information is maintained in the modified vehicle wiring harness information table. According to the extracted connector name information, the corresponding component name information is created. The pin function definition information is extracted from the vehicle schematic reference material, and the corresponding pin function definition information is maintained in the modified vehicle wiring harness information table according to the connector code and pin number.

[0026] Based on the above scheme, preferably, in step 4, obtaining the list of line differences before and after the transformation is done by setting a preset wiring harness information comparison rule, and the comparison rule is as follows:

[0027] Step 41: Match the wiring harness names in the vehicle wiring harness information table after the design change with the vehicle wiring harness information table before the design change, and mark the ones that cannot be matched as "new wiring harness"; match the matching ones to find the correspondence between the wiring harness diagram numbers before and after the design change.

[0028] Step 42: Match the harness names and match the connector codes before and after the change for harnesses with the same name; if no match can be found, match the connector names or check whether there is a connector code or name in the harness information table before the change or in the harness information table after the change, and mark the connector accordingly.

[0029] Step 43: Match the connector code or name. If no match can be found, check whether the pin number exists in the pre-modification wiring harness information table and whether it exists in the post-modification wiring harness information table. Mark the pin number accordingly.

[0030] Step 44: For the pin number that is matched, compare whether the configuration code, wire number, wire color, wire diameter, and pin function definition information corresponding to the pin number are consistent.

[0031] Based on the above scheme, the preferred method is to obtain a list of line differences before and after the transformer installation based on changes in wiring harness information. The specific steps include:

[0032] Obtain terminal change information and enter it into the vehicle wiring harness information table before the change, generate the vehicle wiring harness information table after the change, and form a list of differences in vehicle wiring harness information.

[0033] Based on the above scheme, step 7 preferably includes the following:

[0034] Retrieve the coordinates of the layout of the graphic before the design change. For the development mode, the system schematic diagram should reflect information before and after the design change. If the internal structure of the components changes, add the internal structure to the system schematic diagram before the design change.

[0035] For cases involving the deletion of connection relationships, the variable elements to be deleted in the system schematic diagram will be marked and not deleted.

[0036] When modifications are involved in the connection relationships, the drawing module adds new connection relationships to the right of the existing connection relationships and highlights them. The positions of other original components or wires are shifted to the right as a whole. The layout after the changes is manually checked and adjusted for compliance.

[0037] Based on the above scheme, step 7 further includes:

[0038] For system schematics whose development mode requires only displaying information after design changes, if changes to the internal structure of components are involved, the new internal structure should be manually replaced.

[0039] When deleting connections, the elements to be deleted will be blurred or hidden.

[0040] For new connections, the new connection will be added to the right of the existing component location, and other non-component wires will be shifted to the right to display the new wire.

[0041] When adding components, the new component will be added to the right of the existing component position, and the positions of other components / wires will be shifted to the right to display the new component.

[0042] Manually verify, adjust, and annotate the configuration boxes for the changed layout.

[0043] The present invention provides a method for developing functional schematic diagrams of automotive circuit systems based on design changes. This method aims to reduce the workload and technical difficulty for developers in identifying design changes, thereby shortening the development cycle, accurately developing design change points, ensuring consistency in process operations, and reducing development costs. Attached Figure Description

[0044] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0045] Figure 1 This is a flowchart of the automotive circuit system functional schematic development method based on design changes according to the present invention. Detailed Implementation

[0046] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0047] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.

[0048] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of components with the same structure or function is shown schematically, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one".

[0049] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0050] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of the invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0051] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0053] Please see Figure 1 As shown, the method for developing functional schematic diagrams of automotive circuit systems based on design changes according to the present invention includes the following steps:

[0054] Step 1) Obtain the original design and transformation data, pre-classify it, standardize the data, and input it into the design and transformation information preprocessing module;

[0055] Specifically, a design change information preprocessing module is created to store the original design change data received by developers, as well as the preprocessed design change information. This module includes two access control endpoints: an upload endpoint and a processing endpoint.

[0056] By using the upload terminal permissions, the received original design and transformation data is uploaded to the design and transformation data preprocessing module. The processing terminal pre-classifies the design and transformation input data according to the type of design and transformation data, such as: BOM information change, configuration information change, wiring harness drawing information change, fuse box information change, component information change, and then standardizes and processes the design and transformation data and enters it into the design and transformation information preprocessing module.

[0057] Step 2) Based on the BOM information before and after the design change, output the design change part difference list and the component-terminal definition information change difference list.

[0058] Step 2 includes maintaining information on the design component and its subordinate components, as well as maintaining the functional definition information of the terminal pins of the design component.

[0059] When maintaining information on modified parts and their subordinate components, the BOM information before and after the modification is compared by part number + version number, and a list of differences in the modified parts is output. For specific methods of maintaining information on modified parts and their subordinate components, refer to the part development attribute definition method in the applicant's patent application: A Method and System for Creating Circuit Information in Automotive Circuit System Schematic Diagrams (Patent No.: ZL202311494387.6). This method defines the development attributes of the modified parts and creates or maintains their part information and the information of their subordinate components (i.e., parts belonging to the next assembly level in the assembly relationship).

[0060] When maintaining the functional definition information of terminal pins of electrical components, the first step is to search for the corresponding two-dimensional diagram and pin definition information of the electrical components in the two-dimensional diagram database using the part number and version number of the electrical components.

[0061] Then, by searching for connector codes and names in the vehicle wiring information table before the change based on the vehicle model and the standard names of the change components, the correspondence between change components and connectors is established.

[0062] Finally, select the modified components and connectors, and store the extracted pin definition information in the corresponding pins in the corresponding vehicle wiring information table. Compare the newly extracted pin definition information with the pin definition information in the vehicle wiring information table before the modification to determine if they are consistent, and output a list of changes in component-terminal definition information (including part number, version number, component name, connector code, pin number, pin function definition information, and pin function definition standard name).

[0063] Step 3) Processing change information in the sales configuration table and the wiring harness configuration code table;

[0064] When processing sales configuration table change information, the configuration table information before and after the change (version number, main function configuration name, configuration mark information) is compared and a list of configuration table change differences is output (including: configuration addition, deletion, replacement status markers and corresponding configuration information).

[0065] Based on the configuration main function name corresponding to the difference point, search and confirm whether the main function is an electrical function in the electrical main function configuration electrical attribute library (used to store the main function configuration item information that needs to be reflected in the system schematic diagram), and output the electrical main function configuration difference list.

[0066] When processing the change information of the harness configuration code table, the change information is compared with the harness configuration code table information before the change (configuration code, configuration code name, configuration level name, configuration point information), and a list of differences in the harness configuration code table is output.

[0067] Search the pre-set relationship database of wire harness configuration code name and main function configuration name (used to store the correspondence between wire harness configuration code name and main function configuration name) and output the correspondence between the main function configuration name, configuration level name and configuration point information corresponding to the changed wire harness configuration code name.

[0068] The system automatically performs consistency checks on the configuration level names and configuration point information of the sales configuration table and wiring harness configuration code table, and outputs a list of configuration code differences that need to be developed after the change.

[0069] Step 4) Handling changes to wiring harness drawings and changes to wiring harness information lists.

[0070] The specific steps for handling changes to wire harness drawings are as follows:

[0071] Based on the wiring harness name, basic information such as the wiring harness drawing number, version number, part number, and version number are extracted from the corresponding modified wiring harness drawings. This information, along with node information, connector names, connector codes, pin numbers, wire numbers, wire colors, wire diameters, and configuration codes, is also extracted and maintained in the modified vehicle wiring harness information table. Corresponding component name information is created based on the extracted connector name information. Pin function definition information is extracted from the vehicle schematic reference materials. The corresponding pin function definition information is maintained in the modified vehicle wiring harness information table according to the connector code and pin number. Based on the required configuration code difference list output in step 3, it is determined whether the corresponding pins in the connector have been developed.

[0072] The system has preset wiring harness information comparison rules and outputs a list of differences in wiring harnesses before and after the modification. The specific comparison rules are as follows:

[0073] A. Match the wiring harness names in the vehicle wiring harness information table after the change with the vehicle wiring harness information table before the change. If no match can be found, mark the unmatched wiring harness name as "new wiring harness". If multiple identical wiring harness names are matched, further match the corresponding wiring harness diagram number. If no identical wiring harness diagram number can be matched, manually select the correspondence between the wiring harness diagram numbers before and after the change.

[0074] B. For harness names that match, the system further matches the connector codes before and after the change for the same harness name. If no match is found, the system further matches by connector name. If no match is found, and the connector code or name exists in the harness information table before the change but not in the harness information table after the change, the connector is marked as "added"; if the connector code or name does not exist in the harness information table before the change but exists in the harness information table after the change, the connector is marked as "deleted".

[0075] C. For connector codes or names that match, the system further matches the pin numbers within the same connector code or name. If a pin number cannot be matched, and the pin number exists in the pre-modification wiring harness information table but not in the post-modification wiring harness information table, then the pin number is marked as "added"; if the pin number does not exist in the pre-modification wiring harness information table but exists in the post-modification wiring harness information table, then the pin number is marked as "deleted".

[0076] D. For pin numbers that are matched, the system will continue to compare whether the configuration code, wire number, wire color, wire diameter, and pin function definition information corresponding to the pin number are consistent.

[0077] Based on the comparison results and new wiring harness pairing relationships output by the comparison rules, the system outputs a list of line differences before and after the change.

[0078] The specific procedures for handling changes to the wiring harness information list are as follows:

[0079] The terminal change information can be found by analyzing and searching the wiring harness information change list, or by using the change component, connector code and name information.

[0080] The found terminal change information is entered into the vehicle wiring harness information table before the change, the modification information is automatically recorded, the vehicle wiring harness information table after the change is generated, and the difference of the changed terminal information is marked to generate a list of differences in vehicle wiring harness information.

[0081] Step 5) Analyze the changed fuse box information, enter it into the fuse box information table before the change, automatically record the modified information, generate the changed fuse box information table, and mark the differences in the changed information to form a fuse box difference list.

[0082] Step 6) Based on the difference list output in Steps 2 to 4, update the whole vehicle wiring information before the change and output the whole vehicle wiring information after the change. According to the functional principle content and wiring connection relationship required to be explained in each system schematic diagram, establish a component allocation list before and after the change for difference marking. The component allocation list before and after the change includes the correspondence between the system schematic diagram and the components contained therein, and the component pins.

[0083] Step 7) Based on the fuse box information and difference list after the changes in Step 5, the vehicle wiring information after the changes output in Step 6, and the component allocation list, import them into the drawing module to modify the system schematic diagram and display the differences.

[0084] The drawing module retrieves the coordinates of the original layout of the graphics before the design change. For system schematics in development modes that require both pre- and post-design changes (showing information before and after the design change), if changes to the internal structure of components are involved (i.e., internal schematics of components), the internal structure is manually added to the original system schematic. If the deletion of connections is involved, the drawing module automatically marks the design elements to be deleted in the system schematic without performing the deletion operation. If the modification of connections is involved, the drawing module automatically adds new connections to the right of the existing connections and highlights them. Other original component or wire positions are shifted to the right. The user then manually confirms and adjusts the layout after the design change for compliance.

[0085] For system schematics with a development mode requirement of single-document development (i.e., only displaying the changed information), if changes involve internal structure alterations to components, the new internal structure must be manually replaced. If connections are deleted, the drawing module automatically blurs or hides the deleted elements; if connections are added, the drawing module automatically adds the new connection to the right of the existing component location, shifts other non-component wires to the right, and highlights the new wire. If new components are added, the drawing module automatically adds the component to the right of the existing component location, shifts other components / wires to the right, and highlights the new component. The layout after the changes must be manually checked for compliance, adjusted, and configuration boxes annotated.

[0086] The purpose of this invention is to improve the development efficiency of functional schematic diagrams for automotive circuit systems based on design changes, reduce the workload of manual analysis and data extraction, and ensure the quality and consistency of the functional schematic diagrams of automotive circuit systems produced after the changes. This can make the subsequent system schematic diagram drawing more accurate and reliable.

[0087] The present invention, through the above-mentioned development method, can not only reduce the workload of developers in identifying design changes and the technical difficulty in the identification process, but also shorten the development cycle, accurately develop design change points, ensure consistency of process operations, and reduce development costs.

[0088] This invention improves drafting efficiency: Traditional automotive circuit system functional schematic development based on design changes typically requires extensive manual analysis and information extraction. This invention introduces automated and intelligent methods, significantly improving drafting efficiency. By automatically extracting design harness information, design component information, design pin information, and design configuration code information, it saves substantial manpower and time resources.

[0089] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for developing functional schematic diagrams of automotive circuit systems based on design changes, characterized in that: Includes the following steps: Step 1) Obtain the original design and transformation data, pre-classify it, standardize the design and transformation data, and enter it into the design and transformation information preprocessing module; Step 2) Based on the BOM information before and after the design change, output the design change part difference list and the component-terminal definition information change difference list. Step 3) Based on the entered sales configuration table change information and the configuration main function name corresponding to the difference points, output the configuration table change difference list and the electrical appliance main function configuration difference list; based on the wiring harness configuration code table change information, perform difference comparison to obtain the wiring harness configuration code table difference list. Search the preset relationship database of wire harness configuration code name - main function configuration name, and output the correspondence between the main function configuration name, configuration level name, and configuration point information corresponding to the configuration code name of the modified wire harness; Perform consistency checks on the configuration level names and configuration point information of the sales configuration table and wiring harness configuration code table, and output a list of configuration code differences that need to be developed after the change. Step 4) Obtain a list of line differences before and after the installation based on the wiring harness drawing change information or wiring harness information change list; Step 5) Analyze the changed fuse box information, enter it into the fuse box information table before the change, automatically record the modified information, generate the changed fuse box information table, and mark the differences in the changed information to form a fuse box difference list. Step 6) Based on the difference list output in Steps 2 to 4, update the whole vehicle wiring information before the change, output the whole vehicle wiring information after the change, and establish a component allocation list before and after the change to mark the differences according to the functional principle content and wiring connection relationship required to be explained in the schematic diagram of each system. Step 7) Based on the fuse box information and difference list after the changes in Step 5, the vehicle wiring information after the changes output in Step 6, and the component allocation list, import them into the drawing module to modify the system schematic diagram and display the differences.

2. The method for developing functional schematic diagrams of automotive circuit systems based on design changes as described in claim 1, characterized in that, Step 1) involves pre-classifying the original design data, including changes to BOM information, configuration information, wiring harness drawing information, fuse box information, and component information.

3. The method for developing automotive circuit system functional schematics based on design changes as described in claim 1, characterized in that, In step 3), the changes in the sales configuration table are compared with the changes in the configuration table before the changes, and a list of changes in the configuration table is output. Based on the main function name corresponding to the difference point, the main function is searched in the electrical appliance main function configuration electrical appliance attribute library to confirm whether the main function is an electrical appliance function, and a list of electrical appliance main function configuration differences is output.

4. The method for developing automotive circuit system functional schematics based on design changes as described in claim 1, characterized in that: The specific steps to obtain a list of line differences before and after the change based on wiring harness drawing modification information include: Based on the wiring harness name, extract the basic information of the wiring harness drawing from the corresponding modified wiring harness drawing, and maintain the corresponding pin function definition information along with the connector code and pin number into the modified vehicle wiring harness information table. Define whether to develop the corresponding pins in the connector according to the configuration code difference list to be developed, and obtain the line difference list before and after the change.

5. The method for developing functional schematic diagrams of automotive circuit systems based on design changes as described in claim 4, characterized in that, In step 4), based on the wiring harness name, the basic information of the wiring harness drawing is extracted from the corresponding modified wiring harness drawing, and this basic information is maintained in the modified vehicle wiring harness information table. Based on the extracted connector name information, the corresponding component name information is created. The pin function definition information is extracted from the vehicle schematic reference material, and the corresponding pin function definition information is maintained in the modified vehicle wiring harness information table according to the connector code and pin number.

6. The method for developing functional schematic diagrams of automotive circuit systems based on design changes as described in claim 5, characterized in that, In step 4, obtaining the list of line differences before and after the transformation is done by using a preset wiring harness information comparison rule, and the comparison rule is as follows: Step 41: Match the wiring harness names in the vehicle wiring harness information table after the design change with the vehicle wiring harness information table before the design change, and mark the ones that cannot be matched as "new wiring harness"; match the matching ones to find the correspondence between the wiring harness diagram numbers before and after the design change. Step 42: Match the harness names and match the connector codes before and after the change for harnesses with the same name; if no match can be found, match the connector names or check whether there is a connector code or name in the harness information table before the change or in the harness information table after the change, and mark the connector accordingly. Step 43: Match the connector code or name. If no match can be found, check whether the pin number exists in the pre-modification wiring harness information table and whether it exists in the post-modification wiring harness information table. Mark the pin number accordingly. Step 44: For the pin number that is matched, compare whether the configuration code, wire number, wire color, wire diameter, and pin function definition information corresponding to the pin number are consistent.

7. The method for developing functional schematic diagrams of automotive circuit systems based on design changes as described in claim 1, characterized in that: The specific steps for obtaining a list of line differences before and after the change based on changes in wiring harness information include: Obtain terminal change information and enter it into the vehicle wiring harness information table before the change, generate the vehicle wiring harness information table after the change, and form a list of differences in vehicle wiring harness information.

8. The method for developing functional schematic diagrams of automotive circuit systems based on design changes as described in claim 1, characterized in that: Step 7 includes the following in detail: Retrieve the coordinates of the layout of the graphic before the design change. For the development mode, the system schematic diagram should reflect information before and after the design change. If the internal structure of the components changes, add the internal structure to the system schematic diagram before the design change. For cases involving the deletion of connection relationships, the variable elements to be deleted in the system schematic diagram will be marked and not deleted. When modifications are involved in the connection relationships, the drawing module adds new connection relationships to the right of the existing connection relationships and highlights them. The positions of other original components or wires are shifted to the right as a whole. The layout after the changes is manually checked and adjusted for compliance.

9. The method for developing functional schematic diagrams of automotive circuit systems based on design changes as described in claim 8, characterized in that: Step 7 also includes: For system schematics whose development mode requires only displaying information after design changes, if changes to the internal structure of components are involved, the new internal structure should be manually replaced. When deleting connections, the elements to be deleted will be blurred or hidden. For new connections, the new connection will be added to the right of the existing component location, and other non-component wires will be shifted to the right to display the new wire. When adding components, the new component will be added to the right of the existing component position, and the positions of other components / wires will be shifted to the right to display the new component. Manually verify, adjust, and annotate the configuration boxes for the changed layout.

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