Diagnosis method and diagnosis system of handheld automobile diagnosis instrument

Abstract

The invention relates to the technical field of automobile fault diagnosis, in particular to a diagnosis method and a diagnosis system of a handheld automobile diagnosis instrument. The method comprises the following steps: acquiring vehicle type information of a target vehicle; obtaining a vehicle ID based on the vehicle type information, wherein the vehicle ID is coding information stored in a diagnostic apparatus corresponding to the vehicle type information; acquiring a control unit corresponding to the target vehicle based on the vehicle ID; scanning a target unit in the control unit to obtain scanning data; and displaying the scanning data on a display screen in the form of a function list, wherein the display screen correspondingly displays function options of equipment version information, fault information, fault clearing information and real-time data flow. The method is high in universality and easy and convenient to operate, and fault diagnosis service can be provided for users of more vehicle types.

Description

Technical Field

[0001] The present application relates to the technical field of automobile fault diagnosis, and in particular to a diagnostic method and a diagnostic system of a handheld automobile diagnostic instrument. Background Art

[0002] With the development of the automotive industry and the advancement of technology, modern vehicles are integrating more and more electronic control systems. These systems are highly complex and require higher and higher professional knowledge from maintenance personnel.

[0003] At present, most automotive diagnostic tools are dedicated equipment that can only adapt to specific brands or models and cannot meet the needs of cross-brands and cross-models. In other words, they have poor versatility and are complex to operate, requiring highly professional technicians to operate.

[0004] Therefore, how to design a method and system for an automobile diagnostic instrument with high versatility and easy operation is a technical problem that urgently needs to be overcome. Summary of the invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide a diagnostic method and a diagnostic system for a handheld automobile diagnostic instrument, which is highly versatile and easy to operate, and can provide fault diagnosis services to users of more vehicle models.

[0006] In a first aspect, an embodiment of the present application discloses a diagnostic method of a handheld automobile diagnostic instrument, which adopts the following scheme: A diagnostic method for a handheld automobile diagnostic instrument comprises: obtaining vehicle model information of a target vehicle; obtaining a vehicle ID based on the vehicle model information, wherein the vehicle ID is coded information stored in the diagnostic instrument corresponding to the vehicle model information; obtaining a control unit corresponding to the target vehicle based on the vehicle ID; scanning a target unit in the control unit to obtain scan data; and displaying the scan data on a display screen in the form of a function list, wherein the display screen displays corresponding function options of device version information, fault information, clearing fault information, and real-time data stream.

[0007] By adopting the above technical solution, the handheld automobile diagnostic instrument can match the corresponding vehicle ID after obtaining the model information of the target vehicle to obtain the control unit of the target vehicle, and then scan the target unit in the control unit to fully obtain the scan data, and display it on the display screen in the form of an intuitive function list, so that users can view device version information, fault information, clear fault information, and real-time data stream and other functional items. This method is suitable for diagnosing vehicles of different models, which can improve the versatility of automobile diagnostic instruments and the overall ease of operation, so as to provide fault diagnosis services for users of more models.

[0008] Optionally, obtaining the vehicle model information of the target vehicle includes: identifying VIN information of the target vehicle; obtaining the vehicle model information based on the VIN information matching and displaying it; and receiving a confirmation instruction for the vehicle model information.

[0009] By adopting the above technical solution, it is possible to quickly and accurately obtain the model information of the target vehicle. Specifically, by identifying the VIN information of the target vehicle, the corresponding model information can be automatically matched and displayed, avoiding errors that may be caused by manual input and improving work efficiency. At the same time, by receiving the user's confirmation instruction, the accuracy of the model information is ensured, further improving the user experience.

[0010] Optionally, obtaining the vehicle model information of the target vehicle includes: receiving a manual vehicle selection instruction and displaying vehicle menu data; and obtaining the vehicle model information based on the received selection information of the target vehicle.

[0011] By adopting the above technical solution, the method can provide a flexible manual vehicle selection method, and the user can specify the model information of the target vehicle by manually selecting instructions, thereby improving the applicability of the system and user experience. Specifically, by displaying vehicle menu data for users to choose, users can intuitively select the required model, simplifying the operation process and enhancing the convenience of the system. At the same time, based on the received selection information, the model information is accurately obtained, ensuring the correctness and effectiveness of the subsequent diagnosis process.

[0012] Optionally, before scanning the target unit in the control unit to obtain the scan data, it includes: establishing a communication connection with the ECU of the target vehicle.

[0013] By adopting the above technical solution, it can be ensured that the handheld automobile diagnostic instrument can accurately establish a communication connection with the target vehicle ECU before diagnosing the target vehicle, thereby improving the stability and reliability of the diagnostic process and avoiding misdiagnosis or missed diagnosis due to communication problems.

[0014] Optionally, the fault information includes a fault code and a text explanation corresponding to the fault code.

[0015] By adopting the above technical solution, users can understand fault information more intuitively and accurately. Not only fault codes but also text explanations are provided, which reduces the time users spend consulting manuals and improves fault diagnosis efficiency.

[0016] Optionally, the method further includes: establishing a communication connection with an external device; receiving an upgrade data packet of a target vehicle model transmitted by the external device; detecting whether the target vehicle model has been successfully upgraded; and if so, restarting.

[0017] By adopting the above technical solution, by establishing a communication connection with an external device, receiving and processing the target vehicle model upgrade data packet from the external device, it can ensure that the diagnostic instrument always has the latest vehicle model support capabilities. At the same time, by detecting the upgrade results and automatically restarting after the upgrade is successful, the stability of the system is further improved.

[0018] In a second aspect, an embodiment of the present application discloses a diagnostic system of a handheld automobile diagnostic instrument, which adopts the following scheme: A diagnostic system for a handheld automobile diagnostic instrument comprises: a main control module and a system storage module, a power module, an information storage module, a CAN communication module, an interactive operation module, and a USB interface communication module which are electrically connected to the main control module in sequence; wherein the system storage module is used to store diagnostic software and an automobile fault database; the information storage module is used to store automobile fault information and diagnostic parameters; the CAN communication module is used to communicate with an ECU of a target vehicle to read fault codes and real-time data; the interactive operation module is used to provide a user interaction interface; and the USB interface communication module is used to exchange data with external devices and upgrade vehicle model information.

[0019] By adopting the above technical solutions, the main control module works in coordination with multiple functional modules, especially the efficient communication between the CAN communication module and the target vehicle ECU, which can make the diagnosis process fast and accurate and shorten the diagnosis time; the user interaction interface provided by the interactive operation module allows users to easily view and operate the diagnosis results, improving the usability of the system; the system storage module and the information storage module respectively store the diagnostic software, the vehicle fault database and the specific fault information and diagnostic parameters, ensuring the integrity and reliability of the data. The USB interface communication module not only supports data exchange with external devices, but also supports the upgrade of vehicle model information, ensuring the continuous update and improvement capabilities of the system.

[0020] Optionally, the main control module adopts a domestically produced GD32F103VE chip.

[0021] By adopting the above technical solution and using the domestic GD32F103VE chip as the main control module, the system's autonomy, controllability and cost-effectiveness are improved.

[0022] Optionally, the system storage module adopts an F50L2G41XA chip.

[0023] By adopting the above technical solution and using the F50L2G41XA chip as the system storage module, the stability and capacity of data storage are enhanced, and the overall performance and reliability of the diagnostic instrument are improved.

[0024] Optionally, the interactive operation module includes: a button and a display screen.

[0025] By adopting the above technical solution, the human-computer interaction function of the handheld automobile diagnostic instrument can be realized. Specifically, the settings of buttons and display screens enable users to easily operate and view diagnostic results. Buttons can be used to select different function options or confirm operations, which improves the convenience and accuracy of user operations. The display screen can clearly display various information of the vehicle, such as device version information, fault information, clear fault information, and real-time data streams, so that users can intuitively understand the vehicle status and promptly discover and handle problems.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By obtaining the model information of the target vehicle and obtaining the corresponding vehicle ID based on this information, the diagnostic instrument can accurately match vehicles of various brands and models, significantly improving the versatility and applicability of the diagnostic instrument; 2. Scan the control unit of the target vehicle and display the scanned data on the display screen in the form of a function list, which greatly simplifies the user's operation steps, making it easy for non-professionals to use and enhancing the user experience; 3. The display screen displays device version information, fault information, fault clearing information, and real-time data streams, helping users to fully understand the vehicle status, quickly locate and handle faults, and improve diagnostic efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A flowchart of a diagnostic method of a handheld vehicle diagnostic instrument disclosed in an embodiment of the present application; Figure 2 A schematic diagram of an interface for selecting vehicle menu data displayed on a display screen of a handheld vehicle diagnostic instrument; Figure 3 A schematic diagram of the interface of the control unit displayed on the display screen of the handheld automobile diagnostic instrument; Figure 4 The interface diagram of the vehicle body control unit displayed on the display screen of the handheld vehicle diagnostic instrument; Figure 5 It is a schematic diagram of the interface of the function items corresponding to the scan data displayed on the display screen of the handheld automobile diagnostic instrument; Figure 6 This is a schematic diagram of the interface of device version information displayed on the display screen of a handheld automobile diagnostic instrument; Figure 7 The diagram is a schematic diagram of the interface of the fault information displayed on the display screen of the handheld automobile diagnostic instrument; Figure 8 A schematic diagram of an interface for clearing fault information displayed on a display screen of a handheld automobile diagnostic instrument; Fig. 9A schematic diagram of an interface showing relevant data stream information displayed on a display screen of a handheld automobile diagnostic instrument; Fig.10 This is a schematic diagram of an example flow chart of a diagnostic method of a handheld automobile diagnostic instrument disclosed in an embodiment of the present application; Fig.11 It is a schematic diagram of the structure of a diagnostic system of a handheld automobile diagnostic instrument disclosed in another embodiment of the present application. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings.

[0029] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0030] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The singular forms of "a", "a", "an" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used in this article refers to and includes any or all possible combinations of one or more associated listed items.

[0031] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0033] [First embodiment] See also Figure 1 In the embodiment of the present application, a diagnostic method of a handheld automobile diagnostic instrument is disclosed, which is applied to the handheld automobile diagnostic instrument. During diagnosis, the handheld automobile diagnostic instrument is connected to the OBD interface on the automobile. Specifically, a diagnostic method of a handheld automobile diagnostic instrument includes the following steps: S10, obtaining the model information of the target vehicle; Among them, the vehicle model information is the basic information of the target vehicle, such as vehicle name, brand model, vehicle size, configuration level, vehicle identification code (VIN), etc.

[0034] Specifically, the vehicle model information can be obtained in the following manner, that is, step S10 specifically includes: S11, identifying the VIN information of the target vehicle; Regarding the identification method, in this embodiment, the identification can be performed through image scanning, thereby avoiding the tediousness and errors of manual input.

[0035] S12, displaying the vehicle model information obtained based on the VIN information matching; Among them, the contents displayed on the display screen of the handheld automobile diagnostic instrument are as follows: VIN:EFMAP86C3G0238254; Model: COROLLA; Region: Europe / Other Asia; Model code: ZRE; Options:Product of Tianjin FAW Toyota Motor Co., Ltd.

[0036] S13, receiving a confirmation instruction of vehicle model information; The displayed content can facilitate maintenance personnel and vehicle owners to confirm information, thereby ensuring the accuracy of vehicle model information and further ensuring the correctness of subsequent related diagnostic items.

[0037] Furthermore, the vehicle model information of step S10 may also be obtained in the following manner, that is, step S10 may also include: S14, receiving a manual vehicle selection instruction and displaying vehicle menu data; Among them, this step is for the maintenance personnel to manually select the car, and the corresponding vehicle menu data for selection is displayed on the display screen of the handheld automobile diagnostic instrument, such as Figure 2 As shown, such as TOYOTA, LEXUS, Scion, etc.

[0038] S15, acquiring vehicle model information based on the received selection information of the target vehicle; Among them, when the maintenance personnel selects TOYOTA, the corresponding Toyota model information is obtained.

[0039] As described above, based on the above steps S11 to S13 and S14 to S15, it can be seen that the handheld automobile diagnostic instrument used in the method of the present application has two ways to obtain vehicle model information, thereby increasing the flexibility of use of the diagnostic instrument.

[0040] S20, obtaining a vehicle ID based on the vehicle model information; The vehicle ID is the coding information or number stored in the diagnostic instrument corresponding to the vehicle model information. In this step, based on the known vehicle model name and brand model, the corresponding vehicle ID in the car diagnostic instrument can be obtained, so that the diagnostic instrument can accurately match vehicles of various brands and models, significantly improving the versatility and applicability of the diagnostic instrument.

[0041] S30, acquiring a control unit corresponding to the target vehicle based on the vehicle ID; Among them, the control unit is the driving mechanism, chassis, body, information and communication, seats and doors, air conditioning and other related control units in the vehicle control system, such as Figure 3 shown.

[0042] S40, scanning the target unit in the control unit to obtain scanning data; The target unit is, for example, a vehicle body control unit, and the scan data obtained is, for example, Figure 4 As shown, the data included in the body control unit include AB-airbag, CGW central gateway, EZS-electronic ignition switch, OCP-overhead control panel, ATA-anti-theft alarm system, SAM-signal acquisition and execution module, AHE (trailer identification device), MSS-special vehicle multi-function control module, HRA-FR-front right headlight range controller, HRA-FL-front left headlight range controller, etc.

[0043] It is to be noted that before step S40 , the process includes: establishing a communication connection with an ECU (Electronic Control Unit) of the target vehicle.

[0044] Among them, after the handheld automobile diagnostic instrument is connected to the OBD interface on the car, a communication connection with the vehicle's ECU is realized, so as to ensure that the handheld automobile diagnostic instrument can accurately establish a communication connection with the target vehicle ECU before diagnosing the target vehicle, thereby improving the stability and reliability of the diagnostic process and avoiding misdiagnosis or missed diagnosis due to communication problems.

[0045] Step S50, displaying the scanned data on the display screen in the form of a function list; Among them, Figure 5 As shown, the display screen of the handheld automobile diagnostic instrument displays the function options of device version information, fault information, clear fault information and real-time data stream.

[0046] Displaying device version information can help maintenance personnel obtain version information, and when necessary, they can find the corresponding device according to the current version information for replacement and repair, such as Figure 6 Shown is the displayed device version information.

[0047] Regarding the function options of fault information, the fault code and the text explanation of the corresponding fault code can be displayed after selection, such as Figure 7 As shown, it enables users to understand fault information more intuitively and accurately. It not only provides fault codes but also comes with text explanations, which reduces the time users spend consulting manuals and improves fault diagnosis efficiency.

[0048] Regarding the function option of clearing fault information, the maintenance personnel can selectively clear the previously detected fault information after selecting it, such as Figure 8 This operation is performed after the repair is completed and no problems are detected to avoid erroneous prompts during vehicle use.

[0049] Regarding real-time data flow, it is used to obtain the corresponding data in the control unit so that maintenance personnel can know in real time, such as Fig. 9 As shown, the current data status of 001 left turn signal light, 005 right turn signal light, 002 left tail light, 006 right headlight, 003 brake, etc. can be obtained.

[0050] Furthermore, in this embodiment, it also includes: S60, establishing a communication connection with an external device; The external device is an electronic device such as a computer, and the handheld vehicle diagnostic instrument is separately connected to the external device for communication via a USB cable.

[0051] S70, receiving an upgrade data packet of a target vehicle model transmitted by an external device; Among them, the inspection personnel can download the corresponding upgrade data package on the computer based on the currently updated vehicle model information and input it into the handheld vehicle diagnostic instrument. The handheld vehicle diagnostic instrument receives the upgrade data package. This operation can ensure that the diagnostic instrument always has the latest vehicle model support capabilities.

[0052] S80, detecting whether the target vehicle model has been successfully upgraded; Among them, the method used in the handheld automobile diagnostic instrument can autonomously detect whether the upgrade is successful.

[0053] S90: If yes, restart; Among them, automatic restart after a successful upgrade can further improve the stability of the system.

[0054] In order to more clearly explain the diagnostic method of a handheld vehicle diagnostic instrument disclosed in the embodiment of the present application, please refer to Fig.10 The specific execution process is as follows: S101, displaying the home page and waiting for user operation; S102, determine whether vehicle type diagnosis is selected, if yes, execute step S103, if no, execute step S101; S103, automatic identification, and proceed to step S104; Here, step S103 corresponds to step S11, which will not be described in detail here.

[0055] S104, read VIN, and proceed to step S105; S105, matching vehicle models, and continuing to step S108; Among them, step S104 and step S105 correspond to the above-mentioned step S12, and will not be described in detail here.

[0056] S106, manually select the model, and continue to step S107; S107, loading menu data, and continuing to step S108; Among them, step S106 and step S107 correspond to step S14, and will not be described in detail here.

[0057] S108, obtain vehicle ID, and proceed to step S109; Here, step S108 corresponds to the above step S20 and will not be described in detail here.

[0058] S109, obtaining diagnostic data of the vehicle, and continuing to step S110; The step S108 corresponds to the above-mentioned step S30 and step S40. The diagnostic data in this step is the corresponding scanning data obtained after the target control unit is scanned.

[0059] S110, displaying a function list; Herein, step S110 corresponds to the above step S50 and will not be described in detail here.

[0060] In summary, the first embodiment of the present invention discloses a diagnostic method for a handheld automobile diagnostic instrument, which obtains the vehicle model information of the target vehicle and obtains the corresponding vehicle ID based on this information, thereby ensuring that the diagnostic instrument can accurately match vehicles of various brands and models, significantly improving the versatility and applicability of the diagnostic instrument; scanning the control unit of the target vehicle, and displaying the scanned data on the display screen in the form of a function list, greatly simplifying the user's operating steps, allowing non-professionals to easily use it and enhancing the user experience; displaying functional items such as device version information, fault information, clearing fault information and real-time data stream on the display screen, helping users to fully understand the vehicle status, quickly locate and handle faults, and improve diagnostic efficiency and accuracy.

[0061] [Second embodiment] See also Fig.11 In the second embodiment of the present application, a diagnostic system of a handheld automobile diagnostic instrument is disclosed, which includes: a main control module 210, a system storage module 220, a power module 230, an information storage module 240, a CAN communication module 250, an interactive operation module 260 and a USB interface communication module 270.

[0062] Among them, the main control module 210 is electrically connected to the system storage module 220, the power module 230, the information storage module 240, the CAN communication module 250, the interactive operation module 260, and the USB interface communication module 270 in sequence; the main control module 210 adopts the domestic GD32F103VE chip for data processing; the system storage module 220 adopts the F50L2G41XA chip for storing diagnostic software and automobile fault database; the power module 230 is used to provide a stable power supply for the handheld automobile diagnostic instrument; the information storage module 240 is used to store the automobile's fault information and diagnostic parameters; the CAN (Controller Area Network) communication module 250 is used to communicate with the ECU of the target vehicle and read fault codes and real-time data; the interactive operation module 260 includes buttons and a display screen, the buttons are used for users to perform manual operations, and the display screen is used to display the interactive interface; the USB interface communication module 270 is used to exchange data with external devices and upgrade vehicle model information.

[0063] It should be noted that the diagnostic method of a handheld vehicle diagnostic instrument implemented by the diagnostic system of a handheld vehicle diagnostic instrument disclosed in the second embodiment of the present application is the same as that of the first embodiment, so it will not be described in detail here. Optionally, each module in this embodiment and the above-mentioned other operations or functions are respectively for implementing the methods in the above-mentioned embodiments.

[0064] In addition, it can be understood that the aforementioned embodiments are only exemplary descriptions of the present invention. Under the premise that the technical features do not conflict, the structures do not contradict, and the purpose of the present invention is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used in combination.

[0065] In the several embodiments provided by the present invention, it should be understood that the disclosed methods and systems can be implemented in other ways. For example, the modules included in the system described above are only schematic, and the division of modules is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0066] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0067] In addition, each functional unit / module in each embodiment of the present invention may be integrated into one processing unit / module, or each unit / module may exist physically separately, or two or more units / modules may be integrated into one unit / module. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of hardware plus software functional units / modules.

[0068] The above-mentioned integrated unit / module implemented in the form of a software functional unit / module can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for enabling one or more processors of a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store program codes.

[0069] Finally, it should be noted that 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A diagnostic method for a handheld automobile diagnostic instrument, characterized in that: include: Get the model information of the target vehicle; Acquire a vehicle ID based on the vehicle model information, wherein the vehicle ID is coded information stored in the diagnostic instrument corresponding to the vehicle model information; Acquire a control unit corresponding to the target vehicle based on the vehicle ID; Scanning a target unit in the control unit to obtain scan data; The scanned data is displayed on a display screen in the form of a function list, wherein the display screen correspondingly displays function options of device version information, fault information, clear fault information and real-time data stream.

2. The method according to claim 1, characterized in that Get the target vehicle's model information, including: Identify the VIN information of the target vehicle; The vehicle model information is obtained based on the VIN information matching and displayed; A confirmation instruction of the vehicle model information is received.

3. The method according to claim 1, characterized in that The step of obtaining the model information of the target vehicle includes: Receive manual vehicle selection instructions and display vehicle menu data; Based on the received selection information of the target vehicle, the vehicle model information is acquired.

4. The method according to claim 1, characterized in that Before scanning the target unit in the control unit to obtain the scan data, the method includes: A communication connection is established with the ECU of the target vehicle.

5. The method according to claim 1, characterized in that The fault information includes a fault code and a textual explanation corresponding to the fault code.

6. The method according to claim 1, characterized in that Also includes: Establishing communication connection with external devices; Receiving an upgrade data packet of a target vehicle model transmitted by the external device; Detecting whether the target vehicle model is upgraded successfully; If yes, restart.

7. A diagnostic system for a handheld automobile diagnostic instrument, characterized in that: include: A main control module and a system storage module, a power module, an information storage module, a CAN communication module, an interactive operation module, and a USB interface communication module electrically connected to the main control module in sequence; Wherein, the system storage module is used to store diagnostic software and automobile fault database; The information storage module is used to store the fault information and diagnostic parameters of the vehicle; The CAN communication module is used to communicate with the ECU of the target vehicle to read fault codes and real-time data; The interactive operation module is used to provide a user interaction interface; The USB interface communication module is used to exchange data with external devices and update vehicle model information.

8. The system according to claim 1, characterized in that The main control module adopts the domestically produced GD32F103VE chip.

9. The system according to claim 1, characterized in that The system storage module adopts F50L2G41XA chip.

10. The system according to claim 1, characterized in that The interactive operation module includes: a button and a display screen.

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