Mode recognition method and device, VCI diagnosis equipment and storage medium

Abstract

The invention provides a mode recognition method and device, VCI diagnosis equipment and a storage medium. The method comprises the steps of obtaining a currently logged-in target account; inquiring account information matched with the target account from a pre-configured user management table, and extracting the account information; extracting the account type of the target account from the account information; if the account type represents that the target account belongs to an after-sales account, entering an after-sales mode and downloading a DEMO program from a background server for self-inspection; and if the account type represents that the target account belongs to the diagnosis account, entering a diagnosis mode and downloading a diagnosis program from the background server to diagnose the vehicle. According to the scheme, the user management table is pre-configured in the VCI diagnostic equipment, the target account is obtained when the user logs in, the account type of the target account is inquired in the user management table, and the working mode of the VCI diagnostic equipment is determined based on the account type, so that the purposes of automatically and accurately identifying the working mode, simplifying operation and improving humanization are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle diagnosis, and in particular to a pattern recognition method, a device, a VCI diagnostic device and a storage medium. Background Art

[0002] At present, cars have been electronicized. The application of automotive electronic technology will make cars more intelligent, and the corresponding complexity of vehicle maintenance will also be greatly improved. The automobile fault diagnosis instrument (i.e. VCI diagnostic equipment) is a vehicle fault self-checking terminal. The automobile fault diagnosis instrument is a portable intelligent automobile fault self-checking instrument used to detect automobile faults. Users can use it to quickly read the faults in the automobile electronic control system, and display the fault information through the LCD screen to quickly find out the location and cause of the fault.

[0003] Existing VCI diagnostic equipment requires special methods such as pressing a combination of keys (such as the power key + "+ / -") to enter the after-sales mode. Maintenance personnel perform self-tests of the VCI diagnostic equipment according to maintenance instructions. The existing method requires a certain understanding of the VCI diagnostic equipment, is complex to operate, and is not user-friendly. Summary of the invention

[0004] In view of this, the embodiments of the present invention provide a pattern recognition method, apparatus, VCI diagnostic equipment and storage medium to achieve the purpose of automatically and accurately identifying the working mode, simplifying the operation and improving the humanization.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0006] A first aspect of an embodiment of the present invention discloses a pattern recognition method, which is applied to a VCI diagnostic device, wherein the VCI diagnostic device is connected to a background server, and the method includes:

[0007] When the user logs in successfully, get the currently logged in target account;

[0008] Querying account information matching the target account from a pre-configured user management table, and extracting the account information; the user management table includes: multiple accounts and account information corresponding to each of the accounts;

[0009] Extracting the account type of the target account from the account information;

[0010] If the account type indicates that the target account is an after-sales account, entering the after-sales mode and downloading a DEMO program from the backend server, and performing a self-check using the DEMO program;

[0011] If the account type indicates that the target account belongs to a diagnostic account, a diagnostic mode is entered and a diagnostic program is downloaded from the background server, and the vehicle is diagnosed using the diagnostic program.

[0012] In one embodiment, the account information corresponding to each of the accounts is stored in the user management table in JSON format; accordingly, querying the account information matching the target account from the pre-configured user management table and extracting the account information includes:

[0013] The step of querying the account information matching the target account from the pre-configured user management table and extracting the account information to obtain a JSON data packet containing the account information;

[0014] Parse the JSON data packet to obtain the account information.

[0015] In one embodiment, the method further comprises:

[0016] If the account information corresponding to the target account is not found in the pre-configured user management table, prompt information for prompting the user to register is generated and displayed.

[0017] In one embodiment, the method further comprises:

[0018] In response to the user's login operation, display the login interface and receive the login account and login password entered by the user;

[0019] If the login account and the login password match, it is determined that the user has successfully logged in and the login account is used as the target account.

[0020] In one embodiment, the method further comprises:

[0021] When it is determined that the self-check is completed using the DEMO program, the DEMO program is deleted.

[0022] In one embodiment, the method further comprises:

[0023] When it is determined that the diagnosis of the vehicle using the diagnostic program is completed, the diagnostic program is deleted.

[0024] In one embodiment, the method further comprises:

[0025] In response to the user's registration operation, display the registration interface and receive the registration account number entered by the user;

[0026] The registered account is saved in the user management table, and the account type of the registered account is configured so that the account type of the registered account indicates that the registered account belongs to the diagnostic account.

[0027] A second aspect of an embodiment of the present invention discloses a pattern recognition device, which is applied to a VCI diagnostic device, wherein the VCI diagnostic device is connected to a background server, and the method includes:

[0028] The acquisition unit is used to obtain the target account currently logged in when the user logs in successfully;

[0029] A query unit, used to query the account information corresponding to the target account from a pre-configured user management table and extract the account information; the user management table includes: multiple accounts and account information corresponding to each of the accounts;

[0030] an extraction unit, configured to extract the account type of the target account from the account information;

[0031] A self-checking unit, configured to enter an after-sales mode and download a DEMO program from the backend server if the account type indicates that the target account belongs to an after-sales account, and perform a self-check using the DEMO program;

[0032] The diagnosis unit is used to enter a diagnosis mode and download a diagnosis program from the background server if the account type indicates that the target account belongs to a diagnosis account, and use the diagnosis program to diagnose the vehicle.

[0033] A third aspect of an embodiment of the present invention discloses a VCI diagnostic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the pattern recognition method as disclosed in any one of the first aspect of the embodiment of the present invention is implemented.

[0034] The fourth aspect of an embodiment of the present invention discloses a storage medium, which is a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the pattern recognition method as described in any one of the first aspect of the embodiment of the present invention.

[0035] Based on the above-mentioned embodiment of the present invention, a pattern recognition method, device, VCI diagnostic equipment and storage medium are provided, which are applied to VCI diagnostic equipment, and the VCI diagnostic equipment is connected to a background server. The method includes: when the user logs in successfully, obtaining the target account currently logged in; querying the account information matching the target account from the pre-configured user management table, and extracting the account information; the user management table includes: multiple accounts and account information corresponding to each of the accounts; extracting the account type of the target account from the account information; if the account type indicates that the target account belongs to an after-sales account, entering the after-sales mode and downloading the DEMO program from the background server, and using the DEMO program to perform self-test; if the account type indicates that the target account belongs to a diagnostic account, entering the diagnostic mode and downloading the diagnostic program from the background server, and using the diagnostic program to diagnose the vehicle. In this solution, by pre-configuring the user management table in the VCI diagnostic equipment, the target account is obtained when the user logs in, the account type of the target account is queried in the user management table, and the working mode of the VCI diagnostic equipment is determined based on the account type, so as to achieve the purpose of automatically and accurately identifying the working mode, simplifying the operation, and improving the humanization. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 An architecture diagram of a pattern recognition system disclosed in an embodiment of the present invention;

[0038] Figure 2 A flow chart of a pattern recognition method disclosed in an embodiment of the present invention;

[0039] Figure 3 A flowchart of another pattern recognition method disclosed in an embodiment of the present invention;

[0040] Figure 4 A structural diagram of a pattern recognition device disclosed in an embodiment of the present invention;

[0041] Figure 5 The present invention is a structural diagram of a VCI diagnostic device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In this application, the terms "comprises", "comprising" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0044] As can be seen from the background technology, the existing VCI diagnostic equipment can only enter the after-sales mode by pressing a combination of keys (such as the power button + "+ / -") and other special methods. The maintenance personnel perform the self-test of the VCI diagnostic equipment according to the maintenance instructions. The existing method requires a certain understanding of the VCI diagnostic equipment, the operation is complicated, and it is not user-friendly.

[0045] Therefore, an embodiment of the present invention discloses a pattern recognition method, apparatus, VCI diagnostic equipment and storage medium. In this solution, by pre-configuring a user management table in the VCI diagnostic equipment, the target account is obtained when the user logs in, and the account type of the target account is queried in the user management table. The working mode of the VCI diagnostic equipment is determined based on the account type, so as to achieve the purpose of automatically and accurately identifying the working mode, simplifying the operation, and improving the humanization.

[0046] like Figure 1 , which is an architecture diagram of a pattern recognition system disclosed in an embodiment of the present invention, wherein the pattern recognition system includes a VCI diagnostic device and a background server.

[0047] Specifically, the VCI diagnostic device and the background server are connected via remote communication.

[0048] The background server is used to provide a download interface for the diagnostic program and the DEMO program.

[0049] It should be noted that Demo stands for Demonstration. In the field of IT technology, Demo programs are often used to refer to demonstration and trial versions of software. Demo programs usually do not contain all functions, but can show the main features and operation methods of the software. Demo programs are usually smaller than complete applications and omit unnecessary complex functions, allowing users to quickly understand the key points.

[0050] When the VCI diagnostic device is in after-sales mode, it downloads the DEMO program from the background server and uses the DEMO program to perform self-test; when it is in diagnostic mode, it downloads the diagnostic program from the background server and uses the diagnostic program to diagnose the vehicle.

[0051] It should be noted that in after-sales mode, the self-test of the VCI diagnostic equipment mainly uses the DEMO program to perform after-sales testing and self-test of various functions; in diagnostic mode, it is convenient for users to use the diagnostic program to diagnose the vehicle and conduct in-depth technical analysis and fault diagnosis and troubleshooting of the vehicle.

[0052] Based on the pattern recognition system disclosed in the above embodiment of the present invention, Figure 2 As shown, it is a flow chart of a pattern recognition method disclosed in an embodiment of the present invention, which is applied to the VCI diagnostic device in the above-mentioned pattern recognition system, and mainly includes the following steps:

[0053] Step S101: When the user logs in successfully, the currently logged in target account is obtained.

[0054] It should be noted that the VCI diagnostic device may be a VCI diagnostic device with a display screen, and the VCI diagnostic device is pre-configured with a VCI APP.

[0055] In response to the user's login operation through the VCI APP, the login interface is displayed and the login account and login password entered by the user are received. If the login account and login password match, it is determined that the user has successfully logged in and the login account is used as the target account.

[0056] It is understandable that the VCI diagnostic device also has a preset user login management table, which contains the registered accounts and their corresponding passwords. The login account and login password entered by the user are used to query and match the user login management table. If the login account and login password match, it is determined that the user login is successful and the login account is used as the target account.

[0057] Step S102: query the account information corresponding to the target account from the pre-configured user management table, and extract the account information.

[0058] In step S102, the user management table includes: multiple accounts and account information corresponding to each account.

[0059] It is understandable that when the target account matches any account in the user management table, the account information of the account is the account information corresponding to the target account.

[0060] Among them, the account information includes at least account type and account permissions. The account type is used to indicate whether the corresponding account belongs to an after-sales account or a diagnostic account. The account permissions corresponding to the after-sales account are used to allow the user to download the DEMO program from the background server when the after-sales account logs in. The account permissions corresponding to the diagnostic account are used to allow the user to download the diagnostic program from the background server when the diagnostic account logs in.

[0061] It should be noted that the after-sales account has been configured when the VCI diagnostic equipment leaves the factory, and ordinary users cannot register an after-sales account subsequently.

[0062] For the account belonging to the diagnostic account, the user can add it in the user management representation through the registration process. The registration process is as follows:

[0063] In response to the user's registration operation through the VCI APP, a registration interface is displayed and a registration account input by the user is received, the registration account is saved in the user management table, and the account type of the registration account is configured so that the account type of the registration account indicates that the registration account belongs to a diagnostic account.

[0064] In one embodiment, in response to a user registration operation through the VCI APP, a registration interface is displayed and a registration account and a registration password entered by the user are received, and the registration account and the registration password are associated and stored in a user login management table for verification when the user logs in.

[0065] Step S103: extracting the account type of the target account from the account information.

[0066] Step S104: If the account type indicates that the target account is an after-sales account, the after-sales mode is entered and a DEMO program is downloaded from the backend server, and a self-check is performed using the DEMO program.

[0067] In step S104, if the account type indicates that the target account is an after-sales account, it is determined that the target account has the account authority to download the DEMO program from the background server, enters the after-sales mode and uses the account authority to download the DEMO program from the background server, and uses the DEMO program to perform self-check.

[0068] Among them, after entering the after-sales mode, the VCI diagnostic equipment will display the after-sales interface, which is convenient for users to perform after-sales testing and functional self-test through the after-sales interface and DEMO program.

[0069] In one embodiment, when it is determined that the self-check is completed using the DEMO program, the DEMO program is deleted.

[0070] It should be noted that due to the iterative update of the device software, the DEMO program will also be updated synchronously, so delete this DEMO program after completing the test and self-check.

[0071] Step S105: If the account type indicates that the target account belongs to a diagnostic account, the diagnostic mode is entered and a diagnostic program is downloaded from the background server, and the vehicle is diagnosed using the diagnostic program.

[0072] In step S105, if the account type indicates that the target account is a diagnostic account, it is determined that the target account has the account authority to download the diagnostic program from the background server, enters the diagnostic mode and uses the account authority to download the diagnostic program from the background server, and uses the diagnostic program to diagnose the vehicle.

[0073] Among them, after entering the diagnostic mode, the VCI diagnostic device will display the diagnostic interface, which is convenient for users to diagnose vehicle faults through the diagnostic interface and diagnostic program.

[0074] In one embodiment, when it is determined that diagnosis of the vehicle using the diagnostic program is completed, the diagnostic program is deleted.

[0075] It should be noted that due to the iterative updates of the device software, the diagnostic program will also be updated synchronously. Therefore, this diagnostic program will be deleted after completing the test and self-check.

[0076] Based on a pattern recognition method disclosed in the above-mentioned embodiment of the present invention, in this solution, by pre-configuring a user management table in the VCI diagnostic device, the target account is obtained when the user logs in, the account type of the target account is queried in the user management table, and the working mode of the VCI diagnostic device is determined based on the account type, so as to achieve the purpose of automatically and accurately identifying the working mode, simplifying the operation, and improving the humanization.

[0077] Based on a pattern recognition method disclosed in the above embodiment of the present invention, Figure 3 FIG. 1 is a flow chart of another pattern recognition method disclosed in an embodiment of the present invention, which is applied to the VCI diagnostic device in the above-mentioned pattern recognition system and mainly includes the following steps:

[0078] Step S201: When the user logs in successfully, the currently logged in target account is obtained.

[0079] Step S202: Query the account information matching the target account from the pre-configured user management table, extract the account information, and obtain a JSON data packet containing the account information.

[0080] The user management table includes: multiple accounts and account information corresponding to each account; the account information corresponding to each account is stored in the user management table in JSON format.

[0081] It should be noted that a JSON data packet usually refers to an object or structure containing JSON format data, which is often used for data exchange and storage. It can be transmitted between the client and the server.

[0082] Exemplarily, the JSON data packet is such as: {…, “AccountType”: 1,…}, where AccountType represents the account type. If AccountType=1, it represents an after-sales account; if AccountType=0, it represents a diagnostic account.

[0083] In one embodiment, if the account information corresponding to the target account is not found in the user management table, a JSON data packet is returned to the user, prompting the user that it is not found and to register before logging in. For example: {…, “ErrorMeg”: “The user name does not exist, please register”,…}.

[0084] Step S203: Parse the JSON data packet to obtain account information.

[0085] Step S204: extracting the account type of the target account from the account information.

[0086] In step S204, the account type of the target account is extracted, that is, the value of AccountType in the account information is obtained. If AccountType=1, it represents an after-sales account; if AccountType=0, it represents a diagnosis account.

[0087] Step S205: If the account type indicates that the target account is an after-sales account, the after-sales mode is entered and a DEMO program is downloaded from the backend server, and a self-check is performed using the DEMO program.

[0088] Step S206: If the account type indicates that the target account belongs to a diagnostic account, the diagnostic mode is entered and a diagnostic program is downloaded from the background server, and the vehicle is diagnosed using the diagnostic program.

[0089] Based on a pattern recognition method disclosed in the above-mentioned embodiment of the present invention, in this solution, by pre-configuring a user management table in the VCI diagnostic device, the account and its account information are stored in JSON format, so that the account and its account information are easy to be parsed and generated by the machine, thereby improving the efficiency of obtaining the target account when the user logs in and querying the account type of the target account in the user management table, thereby achieving the purpose of automatically and accurately identifying the working mode according to the account type, simplifying the operation, and improving the humanization.

[0090] Based on a pattern recognition method disclosed in the above embodiment of the present invention, Figure 4 As shown, it is a structural diagram of a pattern recognition device disclosed in an embodiment of the present invention, which is applied to the VCI diagnostic equipment in the above-mentioned pattern recognition system. The device includes: an acquisition unit 1, a query unit 2, an extraction unit 3, a self-test unit 4 and a diagnosis unit 5.

[0091] Wherein, the acquisition unit 1 is used to acquire the currently logged-in target account when the user logs in successfully.

[0092] The query unit 2 is used to query the account information corresponding to the target account from the pre-configured user management table and extract the account information; the user management table includes: multiple accounts and the account information corresponding to each account.

[0093] In one embodiment, the account information corresponding to each account is stored in the user management table in JSON format, and the query unit 2 is specifically used to:

[0094] The account information matching the target account is queried from the pre-configured user management table, and the account information is extracted to obtain a JSON data packet containing the account information; the JSON data packet is parsed to obtain the account information.

[0095] The extraction unit 3 is used to extract the account type of the target account from the account information.

[0096] The self-checking unit 4 is used for entering the after-sales mode and downloading the DEMO program from the background server if the account type indicates that the target account belongs to an after-sales account, and performing self-checking using the DEMO program.

[0097] The diagnosis unit 5 is used to enter the diagnosis mode and download the diagnosis program from the background server if the account type indicates that the target account belongs to the diagnosis account, and use the diagnosis program to diagnose the vehicle.

[0098] In one embodiment, the pattern recognition device further comprises:

[0099] The prompt unit is used to generate and display prompt information for prompting the user to register if the account information corresponding to the target account is not found in the pre-configured user management table.

[0100] In one embodiment, the pattern recognition device further comprises:

[0101] A login unit, used to respond to a user's login operation, display a login interface and receive a login account and login password input by the user;

[0102] If the login account and the login password match, it is determined that the user has successfully logged in and the login account is used as the target account.

[0103] In one embodiment, the pattern recognition device further comprises:

[0104] The first deleting unit is used to delete the DEMO program when it is determined that the self-check is completed using the DEMO program.

[0105] In one embodiment, the pattern recognition device further comprises:

[0106] The second deleting unit is configured to delete the diagnostic program when it is determined that the diagnosis of the vehicle using the diagnostic program is completed.

[0107] In one embodiment, the pattern recognition device further comprises:

[0108] A registration unit, used to respond to a user's registration operation, display a registration interface and receive a registration account number input by the user;

[0109] The registered account is saved in the user management table, and the account type of the registered account is configured so that the account type of the registered account indicates that the registered account belongs to a diagnostic account.

[0110] Based on a pattern recognition device disclosed in the above-mentioned embodiment of the present invention, in this solution, by pre-configuring a user management table in the VCI diagnostic device, the target account is obtained when the user logs in, the account type of the target account is queried in the user management table, and the working mode of the VCI diagnostic device is determined based on the account type, so as to achieve the purpose of automatically and accurately identifying the working mode, simplifying the operation, and improving the humanization.

[0111] like Figure 5 , which is a structural diagram of a VCI diagnostic device disclosed in an embodiment of the present invention, including a memory 501 and a processor 502 .

[0112] Wherein, the memory 501 is used to store computer programs;

[0113] The processor 502 is used to execute a computer program, specifically to implement the pattern recognition method provided in any embodiment of the present application.

[0114] An embodiment of the present invention further provides a computer storage medium for storing a computer program. When the computer program is executed, it is specifically used to implement the pattern recognition method provided by any embodiment of the present application.

[0115] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0116] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0117] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pattern recognition method, characterized in that: Applied to a VCI diagnostic device, the VCI diagnostic device is connected to a background server, and the method includes: When the user logs in successfully, get the currently logged in target account; Querying account information matching the target account from a pre-configured user management table, and extracting the account information; the user management table includes: multiple accounts and account information corresponding to each of the accounts; Extracting the account type of the target account from the account information; If the account type indicates that the target account is an after-sales account, entering the after-sales mode and downloading a DEMO program from the backend server, and performing a self-check using the DEMO program; If the account type indicates that the target account belongs to a diagnostic account, a diagnostic mode is entered and a diagnostic program is downloaded from the background server, and the vehicle is diagnosed using the diagnostic program.

2. The method according to claim 1, characterized in that The account information corresponding to each of the accounts is stored in the user management table in JSON format; accordingly, querying the account information matching the target account from the pre-configured user management table and extracting the account information includes: The step of querying the account information matching the target account from the pre-configured user management table and extracting the account information to obtain a JSON data packet containing the account information; Parse the JSON data packet to obtain the account information.

3. The method according to claim 1, characterized in that The method further comprises: If the account information corresponding to the target account is not found from the pre-configured user management table, prompt information for prompting the user to register is generated and displayed.

4. The method according to claim 1, characterized in that: The method further comprises: In response to the user's login operation, display the login interface and receive the login account and login password entered by the user; If the login account and the login password match, it is determined that the user has successfully logged in and the login account is used as the target account.

5. The method according to claim 1, characterized in that: The method further comprises: When it is determined that the self-check is completed using the DEMO program, the DEMO program is deleted.

6. The method according to claim 1, characterized in that The method further comprises: When it is determined that the diagnosis of the vehicle using the diagnostic program is completed, the diagnostic program is deleted.

7. The method according to any one of claims 1 to 6, characterized in that: The method further comprises: In response to the user's registration operation, display the registration interface and receive the registration account number entered by the user; The registered account is saved in the user management table, and the account type of the registered account is configured so that the account type of the registered account indicates that the registered account belongs to the diagnostic account.

8. A pattern recognition device, characterized in that: Applied to a VCI diagnostic device, the VCI diagnostic device is connected to a background server, and the method includes: The acquisition unit is used to obtain the target account currently logged in when the user logs in successfully; A query unit, used to query the account information corresponding to the target account from a pre-configured user management table and extract the account information; the user management table includes: multiple accounts and account information corresponding to each of the accounts; an extraction unit, configured to extract the account type of the target account from the account information; A self-checking unit, configured to enter an after-sales mode and download a DEMO program from the backend server if the account type indicates that the target account belongs to an after-sales account, and perform a self-check using the DEMO program; The diagnosis unit is used to enter a diagnosis mode and download a diagnosis program from the background server if the account type indicates that the target account belongs to a diagnosis account, and use the diagnosis program to diagnose the vehicle.

9. A VCI diagnostic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the pattern recognition method according to any one of claims 1 to 7 when executing the computer program.

10. A storage medium, characterized in that: The storage medium is a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the pattern recognition method according to any one of claims 1 to 7 is implemented.

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