Automobile mixed line production management system

Abstract

The invention discloses an automobile mixed line production management system, and belongs to the field of production management. The system comprises a data modeling module which is used for establishing a relation mapping model of a whole vehicle material number, an accurate tracing part, an error-proof part and a replaceable part, establishing a relation mapping model of each station and a part needing to be assembled, and configuring rule parameters of each part, including a replaceable mark, a check bit mark and a necessary filling item mark; the assembly scanning list generation module is used for generating an assembly scanning list according to the whole vehicle material number and the station information; the field execution module is used for scanning and checking the part bar code of each corresponding part of the vehicle according to the assembly scanning list; and the off-line verification module is used for carrying out final leakage-proof verification before the vehicle is off-line. According to the invention, online mistake-proofing configuration is realized to generate the assembly scanning list, and intelligent guidance for the assembly process is realized.

Description

Technical Field

[0001] This invention belongs to the field of production management; specifically, this invention relates to a mixed-line production management system for automobiles. Background Technology

[0002] In precision manufacturing industries such as automobiles, the traceability of product components and error-proofing in the assembly process are crucial for ensuring product quality. Currently, the industry commonly faces the following technical challenges:

[0003] Firstly, the generation of traceability codes lacks unified and efficient parsing rules. Traditional verification algorithms are prone to duplicate codes or verification errors, making it difficult to meet the needs of high-frequency, real-time production operations. The error recognition rate is low when manually entering traceability codes, causing great trouble for subsequent traceability work.

[0004] Secondly, in multi-line mixed production scenarios, the component configurations of different car models or products vary greatly. Existing systems struggle to quickly push accurate assembly configuration lists to field equipment, leading to issues such as incorrect or missing components during assembly. Furthermore, there is insufficient handling of the compatibility of replaceable parts, resulting in low production scheduling accuracy and efficiency.

[0005] Publication No. CN118605398A, published on September 6, 2024, discloses a method for preventing incorrect assembly in vehicle production. This method is applied to the MES system and electrical inspection equipment in automobile manufacturing. The method includes: inputting component information data into the MES system, where the component information data includes the component's part number, supplier code, hardware version number, and software version number; scanning the vehicle's VIN code using electrical inspection equipment to read the part number, supplier code, hardware version number, and software version number of the components assembled on the vehicle when it leaves the production line, and verifying and comparing these data with the corresponding part number, supplier code, hardware version number, and software version number in the MES system; if all match, the component assembly is considered correct; if some or all are inconsistent, the component is considered incorrectly assembled and removed from the production line for replacement until consistency is achieved. However, this publication only addresses post-production error prevention and does not provide online error prevention.

[0006] Therefore, this invention proposes a mixed-line production management system for automobiles. Summary of the Invention

[0007] This invention aims to overcome the shortcomings of existing technologies and proposes an automotive mixed-line production management system to achieve the following objectives: realize online error prevention configuration to generate an assembly scan list, and realize intelligent guidance for the assembly process.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is: an automotive mixed-line production management system, the system comprising:

[0009] The data modeling module is used to establish a mapping model between the vehicle part number and the precise traceable parts, error-proof parts, and replaceable parts; to establish a mapping model between each workstation and the required assembly parts; and to configure the rule parameters of each part, including replaceable markers, checkpoint markers, and required field markers.

[0010] The assembly scan list generation module is used to generate an assembly scan list based on the vehicle part number and workstation information.

[0011] The on-site execution module is used to scan and verify the barcodes of corresponding parts of the vehicle according to the assembly scanning list;

[0012] The offline verification module is used to perform a final leak prevention verification before the vehicle leaves the production line.

[0013] Preferably, the replaceable mark indicates whether there is a replaceable part for the corresponding part; the check mark indicates whether the part barcode of the corresponding part is allowed to be scanned repeatedly in different VINs; the required field mark indicates whether the corresponding part has been scanned and verified.

[0014] Preferably, the generation of the assembly scan list includes: when the vehicle enters the workstation, parsing the corresponding vehicle part number according to the vehicle VIN code, and obtaining the list of precise traceable parts, error-proofing parts, and replaceable parts to which the current vehicle part number belongs based on the relationship mapping model between the vehicle part number and precise traceable parts, error-proofing parts, and replaceable parts; at the same time, obtaining the list of assembly parts required for the current workstation based on the relationship mapping model between each workstation and the required assembly parts; finally, taking the intersection of the two lists as the assembly scan list.

[0015] Preferably, the scanning verification of the field execution module includes: checking whether the part number identified by the scanned part barcode is consistent with the part number required in the assembly scanning list or its substitute in the replaceable relationship.

[0016] Preferably, the scanning verification of the field execution module includes: determining whether the scanned part number meets the verification requirements based on the verification bit marks of each part in the assembly scanning list.

[0017] Preferably, the scanning verification of the on-site execution module includes: for precisely traceable parts, obtaining the traceability code generated based on preset enterprise standard rules as the part barcode, and verifying it based on preset traceability code verification rules.

[0018] Preferably, the traceability code generated based on the preset enterprise standard rules consists of six parts, totaling 17 digits: precise traceability part code, precise traceability part group number, supplier code, batch number, verification code, and rework code.

[0019] Preferably, the check digit is represented by a single number or letter, and its value depends on the first 15 digits of the traceability code. The check digit is calculated as follows:

[0020] Retrieve the values ​​corresponding to the first 15 symbols in the traceability code in the preset table;

[0021] The total is obtained by adding the values ​​corresponding to the first 15 symbols in the traceability code in the preset table.

[0022] The remainder obtained by dividing the total by 36 corresponds to the character in the preset table, which is the check code.

[0023] Preferably, the preset traceability code verification rules are as follows:

[0024] After obtaining the traceability code, a verification code is calculated according to the verification code calculation method. The verification code is compared with the verification code in the current traceability code. If they match, the verification passes; otherwise, the verification fails.

[0025] Preferably, the leak prevention verification includes: marking each part in the assembly scan list in the required fields after the scan verification is completed; and allowing the vehicle to be released only after all the required fields of all parts in all assembly scan lists have been marked before the vehicle rolls off the production line.

[0026] The technical effects of this invention are as follows:

[0027] This invention achieves precise transformation of business data into business models and model mapping between multiple elements through the construction of a data modeling module. The assembly scan list generation module, combined with the matching of VIN codes and vehicle part numbers, can push accurate parts assembly lists to field equipment in real time, reducing manual maintenance costs. The field execution module and the offline verification module effectively avoid incorrect or missing assembly issues through multiple verification mechanisms and mandatory pre-offline field verification, improving assembly quality. Simultaneously, the verification of accurate traceability codes ensures their validity, enabling full-process traceability of parts and enhancing the controllability of the production process. The entire process is completed online, achieving online error prevention configuration. Attached Figure Description

[0028] Figure 1 This is a structural block diagram of an automotive mixed-line production management system provided in an embodiment of the present invention. Detailed Implementation

[0029] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. This is to help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solutions of the present invention, and to facilitate its implementation. It should be noted that the terms "first," "second," etc., used in this application are only for the convenience of describing the technical solutions and to distinguish components; the corresponding component configurations may be the same or different, and are not intended to limit the scope of this application. To make the technical solutions of the present invention clearer, the present invention will be explained and illustrated through the following embodiments.

[0030] This embodiment provides an automotive mixed-line production management system, aiming to achieve online error-proofing configuration to generate an assembly scan list, thereby realizing intelligent guidance for the assembly process. For example... Figure 1 As shown, the system includes:

[0031] The data modeling module is used to establish a mapping model between the vehicle part number and the precise traceable parts, error-proof parts, and replaceable parts; to establish a mapping model between each workstation and the required assembly parts; and to configure the rule parameters of each part, including replaceable markers, checkpoint markers, and required field markers.

[0032] The assembly scan list generation module is used to generate an assembly scan list based on the vehicle part number and workstation information.

[0033] The on-site execution module is used to scan and verify the barcodes of corresponding parts of the vehicle according to the assembly scanning list;

[0034] The offline verification module is used to perform a final leak prevention verification before the vehicle leaves the production line.

[0035] Specifically, in automobile manufacturing companies, vehicles with the same configuration share a common feature: the vehicle part number (MIN). Therefore, the data modeling module in this embodiment establishes a mapping model between the MIN and precisely traceable parts, error-proofing parts, and replaceable parts. Simultaneously, it establishes a mapping model between each workstation and the required assembly parts, thereby ensuring the effective transfer and application of business data. Through these models, the system can determine the parts required to be installed at each workstation for a vehicle uniquely identified by its MIN.

[0036] Furthermore, this embodiment also configures the rule parameters for each part, including a replaceable marker, a check digit marker, and a required field marker. The replaceable marker indicates whether a replaceable part exists for the corresponding part; the check digit marker indicates whether the part barcode of the corresponding part is allowed to be scanned repeatedly in different VINs; the required field marker indicates whether the corresponding part has been scanned and verified. Some of these parameters need to be configured before field execution, such as the replaceable marker and the check digit marker; others need to be updated after field execution, such as the required field marker; thus realizing the identification and status marking of part parameters.

[0037] The data modeling module in this embodiment realizes the accurate transformation of business data into business models and the model mapping between multiple elements. It replaces the operation process that relies on human memory and experience with a highly structured data model, avoiding the problem of mistaking or missing parts that may be caused by manually checking the list, realizing intelligent error prevention and facilitating the handling of complex business scenarios.

[0038] When a vehicle enters a workstation, the assembly scan list generation module begins operation. Upon entry, the operator or equipment scans the vehicle's VIN code, and the module then parses the corresponding vehicle part number (MIN). Based on this MIN, the module uses a mapping model between the MIN and traceable, error-proofing, and replaceable parts to obtain a list of these parts. Simultaneously, it uses a mapping model between each workstation and the required assembly parts to obtain a list of the necessary assembly parts for that workstation. Finally, the intersection of these two lists is taken as the assembly scan list, which is then sent to the on-site PDA for real-time display. This assembly scan list generation module matches the required parts list for each workstation and pushes it to the on-site equipment in real-time, reducing manual maintenance costs.

[0039] The on-site execution module scans and verifies the barcodes of corresponding parts on the vehicle according to the assembly scanning list. This verification includes checking whether the part number identified by the scanned barcode matches the part number required in the assembly scanning list or its substitute in the replaceable relationship. This is essentially a mistake-proofing check; by verifying the part number identified by the scanned barcode in real time, it ensures that the correct part is installed on the correct vehicle, thereby preventing the incorrect or missing installation of parts, especially mistake-proofing parts.

[0040] In addition, the scanning verification of the on-site execution module in this embodiment includes: determining whether the scanned part number meets the verification requirements based on the verification bit markers of each part in the assembly scanning list. For example, if the verification bit marker of a part is "on", it means that the part barcode of that part is not allowed to be scanned repeatedly in different VINs (e.g., precise traceability codes). If, during the actual scanning process, it is found that the part barcode of that part is scanned repeatedly in other VINs (at this time, one part corresponds to multiple vehicles, and normal traceability is not possible), it is considered a verification failure. This ensures that each key part of the same vehicle can be identified individually, and thus, during subsequent traceability, it can be determined which specific barcode part is installed in a certain location of a certain vehicle, preventing traceability failure.

[0041] Furthermore, the scanning verification of the on-site execution module in this embodiment also includes: for precisely traceable parts, obtaining the traceability code generated based on preset enterprise standard rules as the part barcode, and verifying it based on preset traceability code verification rules.

[0042] In this embodiment, the traceability code generated based on the preset enterprise standard rules consists of six parts, totaling 17 digits: precise traceability part code, precise traceability part group number, supplier code, batch number, verification code, and rework code.

[0043] The check digit is represented by a single number or letter. It is used to verify the accuracy of manually entered data in special circumstances. Its value depends on the first 15 digits of the traceability code. The check digit is calculated as follows:

[0044] Retrieve the values ​​corresponding to the first 15 symbols in the traceability code in the preset table;

[0045] The total is obtained by adding the values ​​corresponding to the first 15 symbols in the traceability code in the preset table.

[0046] The remainder obtained by dividing the total by 36 corresponds to the character in a preset table, which is the check code. The preset table is shown in Table 1.

[0047] Table 1

[0048] For example, the first 15 digits of the barcode are: 040220AA1A11111

[0049] Total value: 4 + 2 + 2 + 10 + 10 + 1 + 10 + 1 + 1 + 1 + 1 + 1 + 1 = 44

[0050] Divisor: 44 ÷ 36 = 1 remainder 8

[0051] Verification code: 8

[0052] Correspondingly, the preset traceability code verification rules are as follows:

[0053] After obtaining the traceability code, a verification code is calculated according to the verification code calculation method. The verification code is compared with the verification code in the current traceability code. If they match, the verification passes; otherwise, the verification fails.

[0054] The advantages of the checksum design in this embodiment are as follows:

[0055] (1) Accurately meet the design objectives

[0056] Its most significant advantage is its targeted approach, effectively preventing common manual errors. The most common errors in manual data entry include: single-character substitution (e.g., entering 9 instead of 0), transposing adjacent characters (e.g., entering 21 instead of 12), and omissions or additions. This algorithm sums the values ​​of 15 characters; any change in any character will alter the sum, resulting in a very high probability (1 - 1 / 36 ≈ 97.2%) of causing the final checksum to fail. It almost perfectly captures single-character substitution errors. The implementation is extremely simple, with very low computational cost. The entire algorithm involves only three steps: table lookup → summation → modulo. Whether implemented in software (in POS machines and computer software) or hardware (in the firmware of barcode scanners), it requires minimal computational resources and code, making development, testing, and maintenance very easy.

[0057] (2) Practicality and efficiency

[0058] The check digit is compact and offers high storage and transmission efficiency. Using only one digit or letter as the check digit adds almost no increase to the overall data length. This is a very economical design for scenarios where barcode space is limited or data transmission volume is sensitive.

[0059] The verification feedback is immediate, providing a good user experience. After manual data entry, the system can immediately perform verification calculations. If the verification code does not match, it will immediately prompt "Entry error," allowing users to quickly correct errors without having to submit the entire form or discover the problem in subsequent processes.

[0060] It features a wide character set coverage and strong compatibility. Using modulo 36 (remainders 0-35 correspond to characters 0-9 and AZ), the check digit can accommodate both numbers and letters, perfectly matching any possible combinations of numbers and letters within the barcode itself, resulting in excellent versatility.

[0061] Finally, after the on-site execution module completes the scanning verification, this embodiment introduces an offline verification module to prevent omissions. This includes: each part in the assembly scanning list will be marked in the mandatory fields of the assembly scanning list after the scanning verification is completed; before the vehicle leaves the production line, the vehicle is only allowed to leave after all the mandatory fields of all parts in the assembly scanning list have been marked, so as to achieve the purpose of preventing omissions and realizing the online error prevention configuration of the whole vehicle.

[0062] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A mixed-line production management system for automobiles, characterized in that: The system includes: The data modeling module is used to establish a mapping model between the vehicle part number and the precise traceable parts, error-proof parts, and replaceable parts; to establish a mapping model between each workstation and the required assembly parts; and to configure the rule parameters of each part, including replaceable markers, checkpoint markers, and required field markers. The assembly scan list generation module is used to generate an assembly scan list based on the vehicle part number and workstation information. The on-site execution module is used to scan and verify the barcodes of corresponding parts of the vehicle according to the assembly scanning list; The offline verification module is used to perform a final leak prevention verification before the vehicle leaves the production line.

2. The automotive mixed-line production management system according to claim 1, characterized in that: The replaceable marker indicates whether there is a replaceable part for the corresponding part; the check digit marker indicates whether the part barcode of the corresponding part is allowed to be scanned repeatedly in different VINs; the required field marker indicates whether the corresponding part has been scanned and verified.

3. The automotive mixed-line production management system according to claim 1, characterized in that: The process of generating the assembly scan list includes: when a vehicle enters the workstation, parsing the corresponding vehicle part number based on the vehicle VIN code, and obtaining a list of precise traceable parts, error-proofing parts, and replaceable parts to which the current vehicle part number belongs based on the relationship mapping model between the vehicle part number and precise traceable parts, error-proofing parts, and replaceable parts. At the same time, obtaining a list of assembly parts required for the current workstation based on the relationship mapping model between each workstation and the required assembly parts. Finally, the intersection of the two lists is taken as the assembly scan list.

4. The automotive mixed-line production management system according to claim 1, characterized in that: The scanning verification of the field execution module includes: checking whether the part number identified by the scanned part barcode is consistent with the part number required in the assembly scanning list or its substitute in the replaceable relationship.

5. The automotive mixed-line production management system according to claim 1, characterized in that: The scanning verification of the field execution module includes: determining whether the scanned part number meets the verification requirements based on the verification bit mark of each part in the assembly scanning list.

6. The automotive mixed-line production management system according to claim 1, characterized in that: The scanning verification of the on-site execution module includes: for precisely traceable parts, obtaining the traceability code generated based on preset enterprise standard rules as the part barcode, and verifying it based on preset traceability code verification rules.

7. The automotive mixed-line production management system according to claim 6, characterized in that: The traceability code generated based on the preset enterprise standard rules consists of 17 digits in total, comprising six parts: precise traceability part code, precise traceability part group number, supplier code, batch number, verification code, and rework code.

8. The automotive mixed-line production management system according to claim 7, characterized in that: The check digit is represented by a single number or letter, and its value depends on the first 15 digits of the traceability code. The check digit is calculated as follows: Retrieve the values ​​corresponding to the first 15 symbols in the traceability code in the preset table; The total is obtained by adding the values ​​corresponding to the first 15 symbols in the traceability code in the preset table. The remainder obtained by dividing the total by 36 corresponds to the character in the preset table, which is the check code.

9. The automotive mixed-line production management system according to claim 8, characterized in that: The preset traceability code verification rules are as follows: After obtaining the traceability code, a verification code is calculated according to the verification code calculation method. The verification code is compared with the verification code in the current traceability code. If they match, the verification passes. Otherwise, the verification will fail.

10. The automotive mixed-line production management system according to claim 1, characterized in that: The leak prevention verification includes: each part in the assembly scan list will be marked in the mandatory field of the assembly scan list after the scan verification is completed; before the vehicle rolls off the production line, the vehicle is allowed to be released only after all the mandatory fields of all parts in the assembly scan list have been marked.

Images