CN118012008A

CN118012008A - Whole vehicle fault diagnosis method, controller and storage medium

Info

Publication number: CN118012008A
Application number: CN202410151727.3A
Authority: CN
Inventors: 李强; 郭亚玲; 霍欣禹
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Remote Commercial Vehicle R&D Co Ltd; Zhejiang Geely Remote New Energy Commercial Vehicle Group Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Remote Commercial Vehicle R&D Co Ltd; Zhejiang Geely Remote New Energy Commercial Vehicle Group Co Ltd
Priority date: 2024-02-02
Filing date: 2024-02-02
Publication date: 2024-05-10

Abstract

The whole vehicle fault diagnosis method is applied to a cabin domain controller of a vehicle, the cabin domain controller is respectively connected with a display screen and at least one electronic control unit through a bus, if a fault diagnosis instruction made by a user aiming at fault diagnosis options on the display screen is received, an electronic control system is controlled to acquire data of the whole vehicle state, centralized management and control of the vehicle bus and electric appliance components are achieved, and the vehicle fault can be accurately and rapidly diagnosed through real-time acquisition and analysis of data of each electronic control system. The cabin domain controller acquires the fault code transmitted by the electronic control unit, analyzes the fault code, determines the whole vehicle fault diagnosis result, controls the display screen to display the whole vehicle fault diagnosis result, visually displays the fault diagnosis result through the display screen, helps a user to quickly locate and solve the fault problem, and improves the fault diagnosis and troubleshooting efficiency.

Description

Whole vehicle fault diagnosis method, controller and storage medium

Technical Field

The application relates to the technical field of vehicle diagnosis, in particular to a complete vehicle fault diagnosis method, a controller and a storage medium.

Background

With the continuous development of commercial vehicle technologies, conventional fault diagnosis methods, such as handheld diagnostic apparatuses, cannot meet the intelligent requirements of modern vehicles, for example, a fault diagnosis and investigation process is performed by using a handheld diagnostic apparatus, each commercial vehicle service site needs to have at least one handheld diagnostic apparatus, and the latest version of diagnostic software in the diagnostic apparatus needs to be ensured to adapt to a new vehicle model. The method not only requires expensive expense and labor input, but also in practice, the handheld diagnostic instrument is not available at every service site, so that the problem of relatively complex faults of the vehicle cannot be solved at the first time, the fault diagnosis and investigation efficiency is reduced, and meanwhile, the problem of corresponding safety is also generated because the fault of the vehicle is not examined and solved at the first time.

Disclosure of Invention

In order to overcome the problems in the related art, the specification provides a method, a device, equipment and a storage medium for diagnosing the faults of the whole vehicle.

According to a first aspect of embodiments of the present disclosure, there is provided a method, the whole vehicle including a cabin domain, at least one electronic control system for controlling a vehicle state, and a display screen, the electronic control system including an electronic control unit, the cabin domain including a cabin domain controller, the cabin domain controller being connected to the display screen and the at least one electronic control unit respectively through a bus, the method being applied to the cabin domain controller, including:

If a fault diagnosis instruction which is made by a user aiming at fault diagnosis options on the display screen is received, controlling the electronic control system to acquire data of the whole vehicle state;

Acquiring a fault code transmitted by the electronic control unit, wherein when the data acquired by the electronic control system represent that the current electronic control system has a fault, the electronic control unit transmits the corresponding fault code to the cabin domain controller;

Analyzing the fault code and determining a diagnosis result of the whole vehicle fault;

And controlling the display screen to display the whole vehicle fault diagnosis result.

According to the vehicle fault diagnosis method provided by the application, the electronic control system further comprises sensors, all the sensors in the vehicle are used for monitoring information of all parts of the vehicle, and the electronic control unit is in communication connection with the sensors;

The control of the electronic control system for data acquisition of the whole vehicle state comprises the following steps:

And controlling the sensor to collect state data of a designated part of the vehicle, and feeding back the state data to the electronic control unit so that the electronic control unit can judge whether the designated part has a fault or not based on the state data, if so, generating a corresponding fault code, and sending the fault code to the cabin domain controller.

According to the method for diagnosing the faults of the whole vehicle, which is provided by the application, the fault codes are analyzed to determine the diagnosis result of the faults of the whole vehicle, and the method comprises the following steps:

acquiring a preset whole vehicle fault code table, wherein the whole vehicle fault code table is used for distributing fault codes and fault definitions of the fault codes;

analyzing fault information according to the fault code and the whole vehicle fault code table sent by the electronic control unit;

And determining a whole vehicle fault diagnosis result based on the fault information corresponding to at least one electronic control system.

The application provides a method for diagnosing faults of a whole vehicle, which further comprises the following steps:

Determining the corresponding fault severity level of the electronic control system according to the fault information, and displaying the electronic control system on the display screen in sequence from high to low;

acquiring a whole vehicle structure model of the vehicle, and distinguishing and displaying the corresponding part of the electronic control system with the fault based on a preset display mode in the whole vehicle structure model to obtain a new whole vehicle structure model;

And controlling the display screen to display the fault information and the new whole vehicle structural model.

Receiving a viewing instruction made by a user aiming at a diagnosis viewing option displayed on the display screen, and entering a display interface of the electronic control system corresponding to the viewing instruction;

Wherein, the checking options are associated with any display content in the electronic control system, the fault information and the new whole vehicle structure model; the display interface comprises the fault information of the component causing the fault of the electronic control system and the position and structure display of the component.

According to the method for diagnosing the vehicle fault provided by the application, after the fault code is analyzed and the vehicle fault diagnosis result is determined, the method further comprises the following steps:

Uploading the fault diagnosis result to a cradle head server connected with the cabin domain controller, and acquiring a fault resolution strategy fed back by the cradle head server aiming at the fault diagnosis result;

And controlling the display screen to display the fault diagnosis result and a fault solving strategy so as to identify a target component which causes the fault of the electronic control system in the vehicle, wherein the fault solving strategy comprises a fault checking strategy and a technical assistance mode.

According to the method for diagnosing the vehicle fault provided by the application, after the fault code transmitted by the electronic control unit is obtained, the method further comprises the following steps:

When the fault code is monitored, an alarm system connected with the cabin domain controller is triggered to make alarm operation, and the display screen is controlled to give fault diagnosis prompt.

According to the method for diagnosing the faults of the whole vehicle, which is provided by the application, before the electronic control system is controlled to collect data of the whole vehicle state, the method further comprises the following steps:

receiving an instruction for clearing fault code information, which is made by a user aiming at a fault code clearing option on the display screen, and entering a fault code display interface;

and clearing the historical fault codes in the fault code display interface.

The application also provides a cabin area controller of a vehicle, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor realizes the whole vehicle fault diagnosis method when executing the program.

The present application also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for diagnosing a vehicle fault as described in any one of the above.

The whole vehicle fault diagnosis method, the controller and the storage medium are applied to the cabin domain controller of the vehicle, the cabin domain controller is respectively connected with the display screen and the at least one electronic control unit through the bus, if a fault diagnosis instruction made by a user aiming at fault diagnosis options on the display screen is received, the electronic control system is controlled to conduct data acquisition on the whole vehicle state, centralized management and control on the vehicle bus and the electric parts are achieved, and the vehicle fault can be accurately and rapidly diagnosed through collecting and analyzing data of each electronic control system in real time. The cabin domain controller acquires the fault code transmitted by the electronic control unit, analyzes the fault code, determines the whole vehicle fault diagnosis result, controls the display screen to display the whole vehicle fault diagnosis result, visually displays the fault diagnosis result through the display screen, helps a user to quickly locate and solve the fault problem, and improves the fault diagnosis and troubleshooting efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.

FIG. 1 is a schematic flow chart of a method for diagnosing a vehicle fault according to an embodiment of the present disclosure;

FIG. 2 is a schematic illustration of information interaction of a cabin domain controller according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a vehicle fault diagnosis method according to an embodiment of the present disclosure;

FIG. 4 is another flow chart of a method for diagnosing a vehicle fault according to one embodiment of the present disclosure;

Fig. 5 is a schematic block diagram of a computer device shown in accordance with an embodiment of the present description.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

The application provides a complete vehicle fault diagnosis method, a controller and a storage medium. The present application will be described in detail with reference to the accompanying drawings. The features of the examples and embodiments described below may be combined with each other without conflict.

The vehicle described herein refers to a commercially available conventional vehicle having a commercially available conventional structure and function, for example, an electronic control system in the vehicle, which controls running, safety, comfort, etc. of the automobile by electronic technology. The electronic control system of the vehicle is divided into a plurality of subsystems, including an engine control system, a transmission control system, an electronic brake system, a vehicle body control system, a chassis integrated control and safety system and the like. And various sensors and control units in the electronic control system are used for providing various working condition information of the running of the vehicle, so that various functions in the vehicle are controlled.

Fig. 1 is a schematic flow chart of a method for diagnosing a vehicle fault provided in the present disclosure, including:

Step 101, if a fault diagnosis instruction made by a user aiming at fault diagnosis options on the display screen is received, controlling the electronic control system to acquire data of the whole vehicle state;

102, acquiring a fault code transmitted by the electronic control unit, wherein when the data collected by the electronic control system represent that the current electronic control system has a fault, the electronic control unit sends the corresponding fault code to the cabin controller;

step 103, analyzing the fault code and determining a diagnosis result of the whole vehicle fault;

and 104, controlling the display screen to display the whole vehicle fault diagnosis result.

In the method flow shown in fig. 1, the whole vehicle includes a domain controller integrating QNX and android systems, and the domain controller is a centralized platform, and CAN uniformly manage and control various electric components of a vehicle bus and monitor and call bus data of the vehicle in real time, such as through CAN, ethernet, and the like. Meanwhile, related state information can be displayed and controlled in time, the functions of multi-screen linkage, rich information display control and the like are realized, and the intelligent level and more intelligent driving experience of the cabin are greatly improved.

In some embodiments, the domain controller may be a cabin domain controller in a cabin domain for implementing a vehicle fault diagnosis procedure. Referring to fig. 2, the cabin domain controller communicates with a plurality of electronic control systems for controlling the state of the vehicle in the whole vehicle through a CAN line, an ethernet, CANFD (Controller Area Network Flexible Data Rate) and other buses, and the electronic control systems comprise electronic control units, sensors and execution mechanisms, and the cabin domain controller is in communication connection with the electronic control units to realize information interaction, data transmission and information acquisition, wherein the diagnosis of fault multiframe data transmission, data packaging and unpacking are realized in the interaction of a data link layer, a network layer and an application layer, and the implementation of fault information of upper and lower layers is coordinated for real-time monitoring and fault diagnosis of the vehicle state.

Fig. 3 is a schematic structural diagram of a method for diagnosing a vehicle fault provided by the present disclosure.

And entering a complete vehicle fault diagnosis program in the cabin domain controller, receiving a service request of a user, responding to the service request, sending a fault diagnosis request to an electronic control unit of each electronic control system through an application layer, a network, a transmission layer, a data link layer and a physical layer, responding to the fault diagnosis request by the electronic control unit, collecting vehicle bus data, making fault judgment, and transmitting a fault judgment result to the cabin domain controller through the application layer, the network, the transmission layer, the data link layer and the physical layer for fault diagnosis by the complete vehicle fault diagnosis program.

In the embodiment, through the highly intelligent integrated cabin controller and an intelligent whole vehicle fault diagnosis algorithm, the centralized management and control of the vehicle bus and the electric appliance parts are realized, the diagnosis efficiency and accuracy are improved, the possibility of misjudgment and missed judgment is reduced, the problem that the traditional fault diagnosis method is applied to a handheld diagnostic instrument is solved, and therefore the equipment and labor cost is reduced. In addition, the accuracy and efficiency of fault diagnosis are improved, namely, the maintenance time and the time cost of users are reduced.

In other embodiments, the vehicle further comprises a display screen, the cabin domain controller is connected with the display screen, the whole vehicle fault diagnosis application performs data interaction with the cabin domain controller, and a friendly man-machine interface and fault information display are provided for a user through the display screen, so that the user can quickly know and position the vehicle problem. It should be noted that the display screen may be a display independently assembled in the cabin for displaying information, or may be a central control display screen in a conventional structure of the vehicle.

Specifically, in step 101, a terminal where the display screen is located is provided with a whole vehicle fault diagnosis application, and a user opens an HMI (Human Machine Interaction, man-machine interaction) interface for whole vehicle diagnosis through the whole vehicle fault diagnosis application, and displays fault diagnosis options on the HMI interface, including starting fault diagnosis, clearing fault codes, displaying faults, and the like. After the user selects the fault diagnosis options through the touch operation, the cabin domain controller receives the fault diagnosis instruction which is made by the user aiming at the fault diagnosis options, and starts the whole vehicle fault diagnosis program, namely, the electronic control systems in the vehicle are controlled to acquire data of the whole vehicle state.

In some embodiments, the whole vehicle fault diagnosis in the cabin domain controller has initiative, and the whole fault diagnosis is actively performed when the vehicle is powered on, so that a user does not need to activate additional operations such as whole vehicle fault diagnosis application by clicking a display screen.

It should be noted that, during the fault diagnosis of the whole vehicle, the software needs to perform some safety protection measures, for example, to prohibit certain operations to be performed when the ignition switch is turned off, so as to prevent further damage to the vehicle.

In some embodiments, in order to avoid the problem of deviation of accuracy of fault diagnosis caused by new and old faults, after entering the HMI interface for whole vehicle diagnosis, a user may select an option of clearing fault codes on a display screen, so as to clear the fault problem that has been resolved or disappeared and appears in the early stage of the vehicle, so as to ensure that the latest and existing fault information is displayed currently. Specifically, before the cabin domain controller responds to the fault diagnosis instruction and controls the electronic control system to collect data, the cabin domain controller receives an instruction for clearing fault code information, which is made by a user aiming at a fault code clearing option on a display screen, enters a fault code display interface, and clears a historical fault code in the fault code display interface.

In the process of controlling the electronic control system to collect data of the whole vehicle state, the method comprises the following steps:

In step 1011, the sensor is controlled to collect status data of a specified component of the vehicle, and the status data is fed back to the electronic control unit, so that the electronic control unit determines whether the specified component has a fault based on the status data, if yes, a corresponding fault code is generated, and the fault code is sent to the cabin domain controller.

The electronic control system described herein includes a sensor, an electronic control unit, and an actuator, the electronic control unit being communicatively coupled to the sensor, all sensors in the vehicle being configured to monitor information about components in the vehicle and to transmit the monitored information to the electronic control unit for fault monitoring by the electronic control unit.

In some embodiments, the design definition whole vehicle fault code table, as shown in Table 1 below, includes various possible fault codes and fault definitions for resolving and presenting the relevant faults. The whole vehicle fault code table is stored in the electronic control unit, and if the state data of the appointed component transmitted by the sensor meets the condition corresponding to the fault definition or one or more signals exceeding the set condition are detected, the corresponding fault code is determined, and the fault code is sent to the cabin controller.

Table 1:

For another example, the fault code and fault code definition are as follows: specific definitions such as U002 (bus failure), U012 (loss of a communication node), U014 (loss of B communication node), U015 (loss of C communication node), U300 (abnormal input voltage) and the like. Each electronic control unit monitors the whole vehicle state and sends corresponding fault codes to the cabin domain controller according to the defined whole vehicle fault code table. And after receiving the fault code, the cabin domain controller analyzes and presents corresponding faults according to the whole vehicle fault code table and is used for supporting problem confirmation and troubleshooting.

Generally, there are several methods for fault confirmation:

value range determination method: when the input signal received by the electronic control unit exceeds a specified numerical range, the input signal is judged to have faults. For example, the coolant temperature sensor of some vehicle types is designed to be in a normal use temperature range of-30-120 ℃, and the input voltage of the sensor is 0.3-4.7V, so when the electronic control unit detects that the voltage of the input signal of the coolant temperature sensor is less than 0.15V or more than 4.85V, the short circuit or open circuit fault of the circuit of the signal system of the coolant temperature sensor can be judged, and the responsive fault code is determined.

Method for determining change in sensing signal: if the electronic control unit detects that a certain input signal does not change or the change does not reach a specified value within a certain time range, the signal is determined to have faults. For example, after the engine reaches a normal temperature and the electronic control system enters a closed-loop running state, the electronic control unit cannot detect that the output signal of the oxygen sensor exceeds a period of time, or the condition that the oxygen sensor signal is unchanged at 0.45V or above exceeds a certain period of time, the oxygen sensor signal is judged to have faults, and a responsive fault code is determined.

The principle of rapid diagnosis of the value range judging method in automobile maintenance is mainly based on monitoring the numerical ranges of various sensors, actuators and related circuits in an automobile electronic control system, judging whether the value range is within a specified range or not, and being capable of rapidly positioning fault parts and improving maintenance efficiency.

The whole vehicle fault code table is implanted in the cabin domain controller, and can correspond to the vehicle type of the vehicle, so that more vehicle information can be acquired by fusing the cabin domain controller and the vehicle, and the accuracy of the whole vehicle fault diagnosis is improved, wherein the information comprises information such as a business secret which is not disclosed by a vehicle enterprise. Of course, in other embodiments, the whole vehicle fault code table may be designed by a vehicle enterprise developer. In this embodiment, security and privacy protection are important considerations, and the cockpit controller may use encryption technology, access control, and other means to ensure the security of the user data, while respecting the privacy rights of the user.

In step 103, the cabin domain controller receives the fault codes transmitted by the electronic control units, analyzes the fault codes through the whole vehicle fault code table, and presents relevant fault information to determine the diagnosis result of the whole vehicle fault.

In some embodiments, the fault code resolution process includes the following steps 1031-1033:

Step 1031, obtaining a preset whole vehicle fault code table, wherein the whole vehicle fault code table is used for distributing fault codes and fault definitions of the fault codes.

And step 1032, analyzing fault information according to the fault code and the whole vehicle fault code table sent by the electronic control unit.

And 1033, determining a whole vehicle fault diagnosis result based on the fault information corresponding to at least one electronic control system.

And matching the received fault code with the fault code in the whole vehicle fault code table to obtain a target fault code, acquiring fault definition corresponding to the target fault code, further determining fault information, synthesizing a plurality of fault information and giving a diagnosis result of the whole vehicle fault. Such as number of faults, fault level, vehicle health index, etc.

In other embodiments, the cabin domain controller can also introduce an early warning function while realizing fault diagnosis, so that the safety and reliability of the cabin are improved.

Specifically, after the fault code transmitted by the electronic control unit is obtained, the method further includes:

When the electronic control system is controlled to collect data of the whole vehicle state, the data can be monitored in real time, and once an abnormality or fault code is found, an alarm system can be immediately triggered to make alarm operation, such as notifying a vehicle owner or a maintenance technician to carry out corresponding inspection and maintenance.

In order to adapt to different vehicle types and fault types, the OTA upgrading function of the whole vehicle fault code table is introduced, remote updating of the fault definition library is achieved, and the system can be continuously optimized and expanded to adapt to market changes and user requirements.

In step 104, the fault code, the fault information and the fault diagnosis result in the diagnosis process can be displayed through a display screen, the information is intuitively displayed to a user or a service person through a friendly man-machine interface, the user can know the number of the current vehicle faults and the fault list by clicking and reading the fault code information, and the vehicle fault cause is confirmed according to the fault information.

The fault codes of the fault information related to all vehicle electric appliances are collected in the initial development stage, and the similar information of the arrangement positions of the real vehicle parts is displayed and displayed in a targeted manner by designing and defining different HMI interfaces, so that the advantages of high efficiency, strong pertinence, quick positioning, improvement of the investigation efficiency and the like are reflected.

As one example, the diagnostic results are displayed to the user via an automotive display screen in a manner that includes a textual description, a chart, an audible prompt, voice, a graphical interface, and so forth. For ease of understanding by the user, the results should be as concise and clear as possible to provide prompts and advice to the user to enable the user to quickly understand the vehicle condition and potential risk.

In the embodiment, under the background of a highly intelligent integrated cabin domain controller, a scheme based on a central control display screen and a domain controller is excavated, a method for displaying the root cause of the actual vehicle problem and solving the processing mode according to the command issued by the touch control display screen and the fault definition defined by the design is adopted, the original vehicle cabin domain controller directly invokes and receives the relevant bus communication mode of the whole vehicle electric appliance, bus data is collected and analyzed in real time, and the vehicle fault can be diagnosed rapidly and accurately.

In some embodiments, a diagnostic viewing option is displayed on a display screen, a user selects a corresponding diagnostic viewing option through a touch operation on the display screen, and the cockpit controller receives a viewing instruction made by the user for the diagnostic viewing option displayed on the display screen and enters a display interface of the electronic control system corresponding to the viewing instruction.

In other embodiments, the display process of the whole vehicle fault diagnosis result is as follows:

in step 1041, determining a corresponding fault severity level of the electronic control system according to the fault information, sequentially displaying the electronic control system on the display screen according to a sequence from high to low, so as to help a user to understand and solve the vehicle fault with high severity level preferentially, for example, influencing the running of the vehicle, feeding back and processing preferentially, and guaranteeing the safety of the vehicle and the user.

In step 1042, a whole vehicle structure model of the vehicle is obtained, and in the whole vehicle structure model, the corresponding parts of the electronic control system with faults are distinguished and displayed based on a preset display mode, so that a new whole vehicle structure model is obtained.

The display modes described herein include display colors (highlighting), display modes (such as blinking and gradual change), and the like, and visually display the areas with faults so that a user can grasp fault information timely.

The whole vehicle structure model can display the whole fault area of the vehicle, when a certain fault area needs to be displayed in detail, the local model in the whole vehicle structure model is obtained, and the display of the local fault information can be distinguished and displayed according to a preset display mode.

In step 1043, the display screen is controlled to display the fault information and the new whole vehicle structural model.

In some embodiments, fault information is displayed in association with faults in the new vehicle structural model. For example, if the engine of the vehicle fails, the engine or the area where the engine is located is highlighted in the new vehicle structural model, the engine failure information is displayed in a blank area on one side of the engine in the display interface, and a lead may be provided at the engine failure information, with the other end of the lead pointing to the engine.

In other embodiments, if the factors causing the engine failure are more, the factors causing the engine failure are displayed by clicking on the engine failure to enter a new display interface.

In the embodiment, the fault diagnosis results are displayed in a targeted manner by designing and defining different display interfaces, so that the efficiency of fault diagnosis and investigation is improved.

After the control display screen displays the fault diagnosis result of the whole vehicle, a user can click on a prompt icon which corresponds to the fault information on the display screen and is used for solving the problem of the vehicle, for example, click on a small helper, enter a small helper interface, check how to process and solve the problem of the fault, and improve the convenience and practicality of the fault diagnosis of the whole vehicle.

The fault resolution policy corresponding to the prompt icon described herein may be preset according to possible fault information and historical data for resolving the fault information, or may be a cloud platform communicatively connected to the vehicle cabin controller. For example, the cabin domain controller uploads vehicle state information, controller version information, fault problems and the like to a background entry database for statistics, so that subsequent optimization is facilitated.

In some embodiments, the cabin domain controller automatically presents the fault problem and uploads to the cloud platform according to the user's selection or the fault severity level. The background collects and analyzes the running data, fault information and the using habit and feedback of the user, searches solutions according to the fault reasons, provides customized upgrade and maintenance suggestions for the user and maintenance technicians, and feeds back to the user or prompts the primary solutions through a display screen popup.

As one example, the process of giving a fault resolution strategy through a cloud platform communicatively connected to a vehicle cabin controller is as follows:

And (3) data acquisition: the vehicle operation data including the working states of the engine, chassis, vehicle body, power system and other modules, fault code information, and the use habit and feedback of the user are collected through the vehicle bus system and the sensors.

And (3) data transmission: and uploading the acquired data to a cloud server in real time through the Internet of vehicles technology, so that safe storage and backup of the data are ensured.

Data analysis: and analyzing and processing the uploaded data by utilizing a cloud computing technology, and mining information such as the running state, the fault mode, the maintenance requirement and the like of the vehicle.

The proposal is as follows: and according to the data analysis result, combining the actual condition of the vehicle and the habit of the user, and generating personalized upgrading and maintaining schemes. The solution may include software upgrades, hardware changes, maintenance recommendations, etc.

Feedback optimization: and collecting feedback comments and using effects of the user on the recommended scheme, continuously optimizing and improving the scheme, and improving the accuracy and the practicability of the recommendation.

By combining the driving habit of the user, the intelligent recommendation updating maintenance software scheme is realized, so that the vehicle owner and the maintenance technician are helped to better know the vehicle condition, potential faults are prevented, and the maintenance efficiency and quality are improved. At the same time, the system can also provide valuable data feedback to the automobile manufacturer for product improvement and upgrades.

By uploading the whole vehicle faults to the vehicle platform, the embodiment can quickly collect data for statistics and analysis, so that the product performance and fault diagnosis algorithm are optimized, and the diagnosis accuracy is ensured. Meanwhile, the rapid data processing capability and the efficient algorithm enable the response speed to be extremely high, the diagnosis efficiency is improved, the vehicle faults are reduced gradually, the reliability of the vehicle is improved, the product quality is improved, and the practicability is further improved.

In other embodiments, the vehicle is integrated, and when an electronic control unit of the vehicle detects a fault, the cabin controller automatically presents a fault problem according to the received fault severity level and uploads the fault problem to the cloud platform. Two strategies are implemented according to the selection mode or the level system of the user:

Strategy one: after the fault is uploaded to the platform, the background manually searches a corresponding solution and a method according to the fault cause, and then calls out to a driver to feed back whether a certain fault exists in the vehicle or not and the like,

Strategy II: the popup window of the central control screen prompts a certain fault and can click on a small helper interface to preliminarily solve the fault.

After the positioning problem is solved, reading whether a fault code exists or not, and if the positioning problem is solved, exiting the operation; and if the problem exists, executing the whole vehicle fault diagnosis process.

As an example, referring to fig. 4, the process of the whole vehicle fault diagnosis is as follows:

① The failure of the vehicle needs to be checked.

② The vehicle cabin controller has been developed and implanted with a complete vehicle fault code table.

③ And selecting the whole vehicle fault diagnosis application by the operation display screen, and opening the interface of the whole vehicle diagnosis HMI.

④ First selecting the option of clearing trouble code information (in order to clear trouble problems that have been resolved or disappeared in the earlier stage of the vehicle) ensures that the latest and existing trouble information is displayed.

⑤ The electronic control system collects data of the whole vehicle state, the current vehicle fault number and a fault ECU (Electronic Control Unit ) list are known through clicking and reading fault code information, and the vehicle fault reason is confirmed according to the fault information.

⑥ The vehicle problem after clicking the fault information solves the small helper prompt to see how to deal with solving the problem.

⑦ And collecting fault information and fault codes related to all vehicle electric appliances at the initial stage of development, and displaying the arrangement position similar information of the real vehicle parts in a targeted manner by designing and defining different HMI interfaces.

⑧ The cabin domain controller uploads the current vehicle state information, controller version information, fault problems and the like to the background database for statistics and facilitates subsequent optimization.

⑨ If the positioning problem is solved, whether the reading fault exists or not, if the positioning problem is solved, the operation can be stopped, and if the positioning problem is solved, the reading fault is reused.

The application provides a complete vehicle fault diagnosis method, a controller and a storage medium, which are applied to a cabin domain controller of a vehicle, wherein the cabin domain controller is respectively connected with a display screen and at least one electronic control unit through a bus, and if a fault diagnosis instruction made by a user aiming at fault diagnosis options on the display screen is received, the electronic control system is controlled to perform data acquisition on the complete vehicle state, so that the centralized management and control on the vehicle bus and electric parts are realized, and the vehicle fault can be accurately and rapidly diagnosed through collecting and analyzing the data of each electronic control system in real time. The cabin domain controller acquires the fault code transmitted by the electronic control unit, analyzes the fault code, determines the whole vehicle fault diagnosis result, controls the display screen to display the whole vehicle fault diagnosis result, visually displays the fault diagnosis result through the display screen, helps a user to quickly locate and solve the fault problem, and improves the fault diagnosis and troubleshooting efficiency.

Based on the same application concept as the above method, corresponding to the embodiments of the above method, the present specification also provides an embodiment of a computer device.

Fig. 5 is a schematic block diagram of a computer device in the present specification, which is configured to implement the above-mentioned method for diagnosing a vehicle fault. In some embodiments, the computer device may include a processor 510, a network interface 520, a memory 530, and a nonvolatile memory 540, where the nonvolatile memory 540 stores a vehicle fault diagnosis program that may be executed by the processor 510, and the vehicle fault diagnosis program may be used to implement the vehicle fault diagnosis method of the foregoing embodiments. In some embodiments, the computer device may further include other hardware according to the actual function of the computer device, which will not be described herein.

The foregoing describes specific embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.

It is to be understood that the present description is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

The foregoing description of the preferred embodiments is provided for the purpose of illustration only, and is not intended to limit the scope of the disclosure, since any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the disclosure are intended to be included within the scope of the disclosure.

Claims

1. The whole vehicle fault diagnosis method is characterized by comprising a cabin area, at least one electronic control system for controlling the state of the vehicle and a display screen, wherein the electronic control system comprises an electronic control unit, the cabin area comprises a cabin area controller, the cabin area controller is respectively connected with the display screen and the at least one electronic control unit through buses, and the method is applied to the cabin area controller and comprises the following steps:

2. The vehicle fault diagnosis method according to claim 1, wherein the electronic control system further comprises sensors, all of the sensors in the vehicle are used for monitoring information of all components of the vehicle, and the electronic control unit is in communication connection with the sensors;

3. The vehicle fault diagnosis method according to claim 1, wherein the analyzing the fault code to determine the vehicle fault diagnosis result includes:

4. The vehicle fault diagnosis method according to claim 3, characterized in that the method further comprises:

5. The vehicle fault diagnosis method according to claim 4, characterized in that the method further comprises:

6. The vehicle fault diagnosis method according to claim 1, wherein after the analyzing the fault code and determining the vehicle fault diagnosis result, the method further comprises:

7. The method for diagnosing a vehicle fault as claimed in claim 1, wherein after said acquiring the fault code transmitted by the electronic control unit, the method further comprises:

8. The vehicle fault diagnosis method according to claim 1, wherein before the electronic control system is controlled to perform data collection on the vehicle state, the method further comprises:

and clearing the historical fault codes in the fault code display interface.

9. A cabin area controller of a vehicle, characterized in that the cabin area controller comprises a memory, a processor and a vehicle fault diagnosis program stored on the memory and operable on the processor, the processor implementing the steps of the vehicle fault diagnosis method according to any one of claims 1-8 when executing the vehicle fault diagnosis program.

10. A computer readable storage medium, wherein a vehicle fault diagnosis program is stored on the computer readable storage medium, and the vehicle fault diagnosis program when executed implements the steps of the vehicle fault diagnosis method according to any one of claims 1 to 8.