Automobile production line detection system and method based on digital twinning

Abstract

The invention discloses an automobile production line detection system based on digital twinning, and the system comprises a program connection module which is used for recognizing a program operator through a container form or network connection, and receiving and distributing a program sequence used by a production line; the vehicle registration module is used for connecting a to-be-tested vehicle through a network protocol, performing vehicle registration and generating digital twin of the vehicle; the production line station module is used for calculating and mapping the number of stations, station identifiers and station lengths of a production line according to the input data of the line body, creating to form digital stations, acquiring assembly line numbers or vehicle identification codes of vehicles on the stations of the line body by docking production line control information, and sending the assembly line numbers or the vehicle identification codes to the production line station module; mapping the virtual production line and the production line control information to generate digital station twinning of a production line physical entity; and finally, visually displaying the operation state of the digital production line. The invention also discloses an automobile production line detection method based on digital twinning. According to the invention, accurate mapping of all production links is realized.

Description

Technical Field

[0001] The present invention relates to a vehicle production line detection system and method based on digital twin. Background Art

[0002] Digital twin is a technology that connects the physical world and the virtual world, and realizes the virtual reproduction of physical objects through real-time bidirectional data communication between virtual models and actual physical entities.

[0003] In traditional automotive production lines, the electrical diagnosis process is an essential part. It usually relies on pre-set fixed processes and static condition designs, lacking the ability of real-time adjustment and optimization. If changes are needed to the process, it is often necessary to adjust the production line's process programs, line speeds, vehicles, etc. to conduct tests. This not only increases the time cost and labor cost, but may also lead to the inability to detect problems in advance, causing delays in the production schedule.

[0004] In the field of modern automotive manufacturing, the application of communication protocols such as MQTT (Message Queuing Telemetry Transport), HTTPS (Hypertext Transfer Protocol Secure), REST (Representational State Transfer), etc. provides a technical basis for realizing the digital twin of automotive production lines and process flows. At the same time, vehicle diagnostic protocols such as Do IP and SOVD make it possible to digitalize the diagnosis of vehicle electronic systems. In this context, how to use the digital twin system to achieve real-time response to dynamic changes in the production environment and pre-verify various operations and adjustments has important practical significance.

[0005] Therefore, a vehicle production line detection system and method based on digital twin are provided. Summary of the Invention

[0006] The purpose of the present invention is to overcome the existing defects and provide a vehicle production line detection system and method based on digital twin, which realizes the accurate mapping of all production links.

[0007] The technical solution to achieve the above purpose is as follows:

[0008] A vehicle production line detection system based on digital twin according to one aspect of the present invention includes:

[0009] A program connection module, which is used to identify a program runner in the form of a container or through a network connection, and accept and distribute the program sequences used in the production line;

[0010] A maintenance and display module, which is used to maintain and view the upload time, personnel, version information and description of the program, and maintain and view the method of the program runner;

[0011] A vehicle registration module, which is used to connect the vehicle to be tested through a network protocol, register the vehicle, and generate a digital twin of the vehicle;

[0012] A production line station module, which is used to calculate and map the data of the input line body to obtain the number of stations, station identifiers, and station lengths of the production line, create digital stations, and at the same time, by docking with the production line control information, obtain the assembly line number or vehicle identification code of the vehicle on the line body station, and then map the virtual production line and the production line control information to generate a digital twin of the physical entity of the production line station, and finally visually display the operating status of the digital production line;

[0013] A program detection module, which is used to set a corresponding program runner group for the station section, synchronize the status to the digital twin platform, perform logical configuration in combination with the digital twin of the vehicle and the digital twin of the production line, and when the digital twin of the vehicle runs to the digital twin of the corresponding production line station section, the digital twin platform initiates a detection program for running the program runner, where the status of the digital twin platform is synchronized with the physical hardware;

[0014] A digital verification module, which is used to set on the visual interface of the operating status of the digital production line of the production line station module, enable the configuration of digital shadows, perform preliminary detection on the operation of the production line, and the relevant information, execution status, and feedback results involved in the detection are used to discover problems or optimize the production line, program, and execution plan.

[0015] Preferably, in the maintenance display module, the method for maintaining and viewing program runners includes naming a single program runner, grouping program runners, viewing the grouped information, and allocating the programs specified by different runners in combination with the received program sequence to complete the combination of the program and the program operating environment.

[0016] Preferably, the vehicle registration module includes:

[0017] An external unit, which is used to register the vehicle by connecting to the vehicle through a network protocol or by connecting to an external relay device at the vehicle diagnostic port through a network protocol;

[0018] An information input unit, which is used to input the information of the registered vehicle, where the information can be remotely input.

[0019] Preferably, the production line station module includes:

[0020] A digital station unit, which is used to calculate and map the data of the input line body to obtain the number of stations, station identifiers, and station lengths of the production line, create digital stations, and at the same time, by docking with the production line control information, obtain the assembly line number or vehicle identification code of the vehicle on the line body station;

[0021] A virtual production line creation unit for creating virtual workstations by inputting the number of workstations, the length of workstations, the starting position of testing, and the ending position of testing, and mapping the virtual production line and the docking production line control information to generate a graphical workstation segment interface;

[0022] A production line mapping unit for matching the changes in the assembly line number or vehicle identification code of vehicles on the line body workstations with the divided workstation segment information, and mapping and generating a digital twin of the physical entity of the production line;

[0023] A visualization unit for visually displaying the operating status of the digital production line.

[0024] Preferably, the program detection module includes:

[0025] A program group setting unit for setting the corresponding program runner group and running program rules in the formed workstation segment interface;

[0026] A vehicle detection unit for, according to the mapped virtual graphical workstation segment, combining the set running program rules, when a certain vehicle or several vehicles reach the specified position, the digital twin platform notifies the program runner to execute the corresponding program according to the vehicle information in the workstation, and connects the vehicles to be detected according to the vehicle identification on the virtual workstation segment where it is located to detect the vehicles;

[0027] An upload unit for, after the program runner finishes execution, receiving the vehicles that have completed detection notified by the program runner and the uploaded detection results;

[0028] A recording and alarming unit for recording and alarming whether the vehicle fails to complete the test within the specified time and position and whether the detection result is qualified.

[0029] Preferably, the digital verification module includes:

[0030] A digital shadow setting unit for setting the production line beat when the number of workstations and the workstation identification received by the production line workstation module remain unchanged, thereby calculating the moving speed of the vehicle, updating the frequency based on a preset value, and sending vehicle position update information to complete the digital shadow setting for the change in the production line beat;

[0031] A configuration unit for configuring the digital shadow and running the production line, including but not limited to remotely registering the simulation of vehicle deployment, diagnostic programs, and the configured combinational logic;

[0032] An advance detection unit for performing advance detection on the operation of the production line and performing simulation verification and analysis without changing the physical entity.

[0033] A method for detecting an automotive production line based on digital twin according to the second aspect of the present invention includes:

[0034] Step S1, identify the program runner in the form of a container or through a network connection, and accept and allocate the program sequence used in the production line.

[0035] Step S2, connect the vehicle to be tested through a network protocol, perform vehicle registration, and generate a digital twin of the vehicle.

[0036] Step S3, calculate and map the data of the input line body to obtain the number of workstations, workstation identifiers, and workstation lengths of the production line, create digital workstations, and at the same time, obtain the assembly line number or vehicle identification code of the vehicle on the line body workstation by docking with the production line control information.

[0037] Step S4, create virtual workstations by inputting the number of workstations, workstation lengths, test start positions, and test end positions, and map the virtual production line and the docking production line control information to generate a graphical workstation section interface.

[0038] Step S5, combine the changes in the assembly line number or vehicle identification code of the vehicle on the line body workstation, match them with the divided workstation section information, map and generate the digital workstation twin of the physical entity of the production line, and visually display the operating status of the digital production line.

[0039] Step S6, set the corresponding program runner group and running program rules in the formed workstation section interface.

[0040] Step S7, according to the mapped virtual graphical workstation section, combined with the set running program rules, when a certain vehicle or several vehicles reach the specified position, the digital twin platform notifies the program runner to execute the corresponding program according to the vehicle information in the workstation, and connects the vehicle to be detected according to the vehicle identifier on the obtained virtual workstation section, and detects the vehicle.

[0041] Step S8, after the program runner finishes execution, receive the vehicle that has completed the detection notified by the program runner and the uploaded detection results.

[0042] Step S9, determine whether the vehicle fails to complete the test within the specified time and position, and record and alarm whether the detection result is qualified.

[0043] Preferably, in step S2, the vehicle is registered by connecting to the vehicle through a network protocol or connecting to an external relay device at the vehicle diagnostic port through a network protocol, wherein the vehicle information can be remotely input.

[0044] Preferably, in steps S3 to S5, the production line beat can be set based on the received number of workstations while the workstation identifier remains unchanged, thereby calculating the moving speed of the vehicle, updating the frequency based on a preset value, sending vehicle position update information, completing the digital shadow setting for changes in the production line beat, and configuring the digital shadow to detect the operation of the production line in advance. Without changing the physical entity, simulation verification and analysis are carried out, and the relevant information, execution status, and feedback results involved in the detection are used to discover problems or optimize the production line, program, and execution plan.

[0045] The beneficial effects of the present invention are as follows: By creating a comprehensive digital twin system including digital workstation twins, digital production line status, digital program twins, digital process twins, and digital vehicle twins, the present invention realizes accurate mapping of all production links. When the status in the physical entity or digital twin changes, the system can synchronously update in real time. Combined with the information visualization function, operators can intuitively monitor the operation status of the production line. In addition, the system has a simulation operation function and can generate digital shadows. Through the digital shadows, simulation modifications of the workstation, production line status, detection program, process, and vehicle status can be realized. Without actually intervening in the production line speed, vehicle status, and detection program, operators can use the digital twin model to test potential changes and parts that need to be changed or optimized in advance, thereby discovering potential problems and optimizing the production process, effectively improving production efficiency and the accuracy of process verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 is a module diagram of an automotive production line detection system based on digital twin of the present invention;

[0047] Figure 2 is a specific module diagram of the vehicle registration module of the present invention;

[0048] Figure 3 is a specific module diagram of the production line workstation module of the present invention;

[0049] Figure 4 is a specific module diagram of the program detection module of the present invention;

[0050] Figure 5 is a specific module diagram of the digital verification module of the present invention;

[0051] Figure 6 is a flowchart of a method for detecting an automotive production line based on digital twin of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0052] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0053] The present invention will be further described below in conjunction with the accompanying drawings.

[0054] As Figure 1 shown, a vehicle production line detection system based on digital twin includes: a program connection module 1, a maintenance display module 2, a vehicle registration module 3, a production line station module 4, a program detection module 5, and a digital verification module 6.

[0055] The program connection module 1 is used to identify the program runner in the form of a container or through a network connection, and accept and distribute the program sequence used in the production line.

[0056] The maintenance display module 2 is used to maintain and view the upload time, personnel, version information and description of the program, and maintain and view the method of the program runner.

[0057] In the embodiment, the method of maintaining and viewing the program runner includes naming a single program runner, grouping the program runners, viewing the grouped information, combining the received program sequence, and assigning the programs specified by different runners to complete the combination of the program and the program running environment.

[0058] The vehicle registration module 3 is used to connect the vehicle to be tested through a network protocol, perform vehicle registration, and generate a digital twin of the vehicle.

[0059] As Figure 2 shown, the vehicle registration module 3 includes: an external unit 31 and an information input unit 32.

[0060] The external unit 31 is used to perform vehicle registration by connecting to the vehicle through a network protocol or connecting to an external relay device of the vehicle diagnostic port through a network protocol;

[0061] The information input unit 32 is used to input the information of the registered vehicle, and the information can be remotely input.

[0062] The production line station module 4 is used to calculate and map the data of the input line to obtain the number of stations, station identifiers, and station lengths of the production line, create digital stations, and at the same time, by docking with the production line control information, obtain the production line number or vehicle identification code of the vehicle on the line station. Then, map the virtual production line and production line control information to generate a digital twin of the physical entity of the production line. Finally, visually display the operating status of the digital production line.

[0063] As Figure 3 shown, the production line station module 4 includes: a digital station unit 41, a virtual production line creation unit 42, a production line mapping unit 43, and a visualization unit 44.

[0064] The digital station unit 41 is used to calculate and map the data of the input line to obtain the number of stations, station identifiers, and station lengths of the production line, create digital stations, and at the same time, by docking with the production line control information, obtain the production line number or vehicle identification code of the vehicle on the line station;

[0065] The virtual production line creation unit 42 is used to create virtual stations by inputting the number of stations, station lengths, test start positions, and test end positions, and map the virtual production line and the docked production line control information to generate a graphical station segment interface;

[0066] The production line mapping unit 43 is used to match the changes in the production line number or vehicle identification code of the vehicle on the line station with the divided station segment information, and map and generate a digital twin of the physical entity of the production line;

[0067] The visualization unit 44 is used to visually display the operating status of the digital production line.

[0068] The program detection module 5 is used to set a corresponding program runner group for the station segment, synchronize the status to the digital twin platform, perform logical configuration in combination with the digital twin of the vehicle and the digital twin of the production line. When the digital twin of the vehicle runs to the digital twin of the corresponding production line station segment, the digital twin platform initiates a detection program for running the program runner, where the status of the digital twin platform is synchronized with the physical hardware.

[0069] As Figure 4 shown, the program detection module 5 includes: a program group setting unit 51, a vehicle detection unit 52, an upload unit 53, and a recording and alarm unit 54.

[0070] The program group setting unit 51 is used to set the corresponding program runner group and program running rules on the formed station segment interface;

[0071] The vehicle detection unit 52 is used to, according to the mapped virtual graphic work position segments and in combination with the set operating program rules, when a certain vehicle or several vehicles reach the specified position, the digital twin platform notifies the program runner to execute the corresponding program based on the vehicle information in the work position, and connect the vehicle to be detected according to the vehicle identifier on the obtained virtual work position segment to detect the vehicle;

[0072] The uploading unit 53 is used to, after the program runner finishes execution, receive the vehicles that have completed detection notified by the program runner and the uploaded detection results;

[0073] The recording and alarming unit 54 is used to record and alarm whether the vehicle fails to complete the test within the specified time and position and whether the detection result is qualified.

[0074] The digital verification module 6 is used to be set on the digital production line operation status visualization interface of the production line work position module, enable the configuration of digital shadow, conduct pre-detection on the operation of the production line, and the relevant information, execution situation and feedback results involved in the detection are used to discover problems or optimize the production line, program and execution plan.

[0075] As Figure 5 shown, the digital verification module 6 includes: a digital shadow setting unit 61, a configuration unit 62 and a configuration unit 62.

[0076] The digital shadow setting unit 61 is used to set the production line beat when the number of work positions received by the production line work position module 3 remains unchanged, thereby calculating the moving speed of the vehicle, updating the frequency based on the preset value, sending vehicle position update information, and completing the digital shadow setting for the change of the production line beat. Among them, modifications related to the length of the production line work position number may be involved;

[0077] The configuration unit 62 is used for the configuration of the digital shadow and running the production line, including but not limited to simulating the remote registration of vehicle deployment, diagnostic programs and the configured combinational logic. At the same time, the digital shadow supports changing and adjusting the configuration to match the production line digital shadow setting.;

[0078] The pre-detection unit 63 is used to conduct pre-detection on the operation of the production line and conduct pre-verification and analysis on situations such as production changes, production optimization, and problem solving without changing the physical entity.

[0079] As Figure 6 shown, a vehicle production line detection method based on digital twin includes:

[0080] Step S1, identify the program runner in the form of a container or through a network connection, and accept and allocate the program sequence used by the production line.

[0081] Step S2: Connect the vehicle to be tested through the network protocol, perform vehicle registration, and generate a digital twin of the vehicle.

[0082] In the embodiment, the vehicle is registered by connecting to the vehicle through the network protocol or connecting to an external relay device at the vehicle diagnostic port through the network protocol. Among them, vehicle information can be remotely input.

[0083] Step S3: Calculate and map the data of the input line body to obtain the number of workstations, workstation identifiers, and workstation lengths of the production line, create digital workstations, and at the same time, obtain the assembly line number or vehicle identification code of the vehicle on the line body workstation by docking with the production line control information.

[0084] Step S4: Create virtual workstations by inputting the number of workstations, workstation lengths, test start positions, and test end positions, map the virtual production line and the docking production line control information, and generate a graphical workstation segment interface.

[0085] Step S5: Combine the changes in the assembly line number or vehicle identification code of the vehicle on the line body workstation, match them with the divided workstation segment information, map and generate a digital twin of the physical entity of the production line, and visually display the operating state of the digital production line.

[0086] In the embodiment, in steps S3 to S5, the production line beat can be set by the received number of workstations with the workstation identifier unchanged, so as to calculate the moving speed of the vehicle, update the frequency based on the preset value, send vehicle position update information, complete the digital shadow setting for the change of the production line beat, and configure the digital shadow to detect the operation of the production line in advance. Without changing the physical entity, perform simulation verification and analysis. The relevant information, execution situation, and feedback results involved in the detection are used to discover problems or optimize the production line, program, and execution plan; it realizes the pre-test of potential changes through the digital twin model without actually intervening in the production line speed, vehicle state, and detection program, thereby discovering potential problems and optimizing the production process, effectively improving production efficiency and the accuracy of process verification.

[0087] Step S6: Set the corresponding program runner group and running program rules in the formed workstation segment interface.

[0088] Step S7: According to the mapped virtual graphical workstation segment, combined with the set running program rules, when a certain vehicle or several vehicles reach the specified position, the digital twin platform notifies the program runner to execute the corresponding program according to the vehicle information in the workstation, and connects the vehicle to be detected according to the vehicle identifier on the virtual workstation segment where it is located, and detects the vehicle.

[0089] Step S8: After the program runner finishes execution, receive the vehicles that have completed the detection and the uploaded detection results notified by the program runner.

[0090] Step S9: Determine whether the vehicle fails to complete the test within the specified time and location, and record and alarm whether the test result is qualified.

[0091] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automotive production line detection system based on digital twin, characterized in that, Including: A program connection module, which is used to identify a program runner in the form of a container or through a network connection, and accept and allocate the program sequence used in the production line; A maintenance and display module, which is used to maintain and view the upload time, personnel, version information and description of the program, and maintain and view the methods of the program runner; A vehicle registration module, which is used to connect the vehicle to be tested through a network protocol, perform vehicle registration, and generate a digital twin of the vehicle; A production line station module, which is used to calculate and map the data of the input line body to obtain the number of stations, station identifiers and station lengths of the production line, create digital stations, and at the same time, by docking the production line control information, obtain the assembly line number or vehicle identification code of the vehicle on the line body station, and then map the virtual production line and the production line control information to generate a digital twin of the physical entity of the production line station, and finally visually display the running state of the digital production line; A program detection module, which is used to set a corresponding program runner group for the station section, synchronize the status to the digital twin platform, perform logical configuration in combination with the digital twin of the vehicle and the digital twin of the production line, and when the digital twin of the vehicle runs to the digital twin of the corresponding production line station section, the digital twin platform initiates a detection program for running the program runner, where the status of the digital twin platform is synchronized with the physical hardware; A digital verification module, which is used to set in the visual interface of the running state of the digital production line of the production line station module, enable the configuration of the digital shadow, and perform pre-detection of the operation of the production line.

2. The automotive production line detection system based on digital twin according to claim 1, characterized in that, In the maintenance and display module, the methods for maintaining and viewing the program runner include naming a single program runner, grouping the program runners, viewing the grouped information, and allocating the programs specified by different runners in combination with the received program sequence to complete the combination of the program and the program running environment.

3. The automotive production line detection system based on digital twin according to claim 1, characterized in that, The vehicle registration module includes: An external connection unit, which is used to connect the vehicle through a network protocol or connect an external relay device of the vehicle diagnostic port through a network protocol for vehicle registration; An information input unit, which is used to input the information of the registered vehicle, where the information can be remotely input.

4. The automotive production line detection system based on digital twin according to claim 3, wherein, The production line station module includes: A digital station unit, which is used to calculate and map the data of the input line body to obtain the number of stations, station identifiers and station lengths of the production line, create digital stations, and at the same time, by docking the production line control information, obtain the assembly line number or vehicle identification code of the vehicle on the line body station; A virtual production line creation unit, which is used to create virtual stations by inputting the number of stations, station lengths, test start positions and test end positions, and map the virtual production line and the docking production line control information to generate a graphical station section interface; A production line mapping unit, which is used to match the change of the assembly line number or vehicle identification code of the vehicle on the line body station with the divided station section information, and map and generate a digital twin of the physical entity of the production line station; A visualization unit, which is used to visually display the running state of the digital production line.

5. The automotive production line detection system based on digital twin according to claim 4, characterized in that, The program detection module includes: A program group setting unit, which is used to set the corresponding program runner group and running program rules in the formed station section interface; A vehicle detection unit, which is used to, according to the mapped virtual graphical workstation segments, in combination with the set operation program rules, when a certain vehicle or several vehicles reach the specified position, the digital twin platform notifies the program runner to execute the corresponding program according to the vehicle information in the workstation, and connects the vehicle to be detected according to the vehicle identification on the virtual workstation segment where it is located, and detects the vehicle; An upload unit, which is used to, after the program runner finishes execution, receive the vehicles that have completed detection notified by the program runner and the uploaded detection results; A recording and alarming unit, which is used to record and alarm whether the vehicle fails to complete the test within the specified time and position and whether the detection result is qualified.

6. The automotive production line detection system based on digital twin according to claim 4, characterized in that, The digital verification module includes: A digital shadow setting unit, which is used to set the production line beat under the condition that the number of workstations and workstation identifiers received by the production line workstation module remain unchanged, so as to calculate the moving speed of the vehicle, update the frequency based on the preset value, send vehicle position update information, and complete the digital shadow setting for the change of the production line beat; A configuration unit, which is used for the configuration of the digital shadow and the operation of the production line, including but not limited to the simulation, diagnosis program and the configured combinational logic of the remote registration vehicle deployment; An advance detection unit, which is used to advance detect the operation of the production line and perform simulation verification and analysis without changing the physical entity.

7. A vehicle production line detection method based on digital twin, characterized in that, It includes: Step S1, identify the program runner in the form of a container or through a network connection, and accept and allocate the program sequence used by the production line; Step S2, connect the vehicle to be tested through a network protocol, perform vehicle registration, and generate a digital twin of the vehicle; Step S3, calculate and map the number of workstations, workstation identifiers and workstation lengths of the production line from the input line body data, create a digital workstation, and at the same time obtain the assembly line number or vehicle identification code of the vehicle on the line body workstation by docking the production line control information; Step S4, create a virtual workstation by inputting the number of workstations, workstation length, test start position and test end position, map the virtual production line and the docking production line control information, and generate a graphical workstation segment interface; Step S5, combine the change of the assembly line number or vehicle identification code of the vehicle on the line body workstation, match it with the divided workstation segment information, map and generate the digital workstation twin of the physical entity of the production line, and visually display the operation state of the digital production line; Step S6, set the corresponding program runner group and operation program rules on the formed workstation segment interface; Step S7, according to the mapped virtual graphical workstation segments, in combination with the set operation program rules, when a certain vehicle or several vehicles reach the specified position, the digital twin platform notifies the program runner to execute the corresponding program according to the vehicle information in the workstation, and connects the vehicle to be detected according to the vehicle identification on the virtual workstation segment where it is located, and detects the vehicle; Step S8, after the program runner finishes execution, receive the vehicles that have completed detection notified by the program runner and the uploaded detection results; Step S9, record and alarm whether the vehicle fails to complete the test within the specified time and position and whether the detection result is qualified.

8. A method for detecting an automotive production line based on digital twin according to claim 7, characterized in that, In the step S2, vehicle registration is performed by connecting to the vehicle through a network protocol or an external relay device connected to the vehicle diagnostic port through a network protocol. Among them, vehicle information can be remotely input.

9. A method for detecting an automobile production line based on digital twin according to claim 7, wherein In the steps S3 to S5, the production line beat can be set based on the received number of workstations with the workstation identifier unchanged, so as to calculate the moving speed of the vehicle, update the frequency based on a preset value, send vehicle position update information, complete the digital shadow setting for changes in the production line beat, and perform the configuration of the digital shadow, detect the operation of the production line in advance, and perform simulation verification and analysis without changing the physical entity. The relevant information, execution status, and feedback results involved in the detection are used to discover problems or optimize the production line, program, and execution plan.

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