CN116661285A

CN116661285A - Automobile fault diagnosis method and application thereof

Info

Publication number: CN116661285A
Application number: CN202310613217.9A
Authority: CN
Inventors: 吴光勋; 杨波; 张元意; 谭杰
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2023-05-26
Filing date: 2023-05-26
Publication date: 2023-08-29

Abstract

The invention discloses a diagnosis method of automobile faults and application thereof, relating to the technical field of automobile electronics; the diagnosis method comprises the steps of obtaining automobile state information, including automobile hardware self-checking fault information; storing the automobile state information into a storage device of the automobile; when the preset uploading condition is met, the storage device uploads the stored automobile state information to a background server; and the background server performs fault diagnosis based on the stored automobile state information to obtain a final fault result. In addition, the diagnosis method is applied to the automobile central computing platform, so that the hardware fault of the automobile central computing platform is effectively monitored, and service providers can respond to maintenance and over-the-air technology upgrading in time.

Description

Automobile fault diagnosis method and application thereof

Technical Field

The invention relates to the technical field of automobile electronics, in particular to a diagnosis method for automobile faults and application thereof.

Background

The electronic and electric architecture in the form of a 'center plus region' is the development direction of the electronic and electric architecture of the future automobiles. The automobile central computing platform combines functions of two cabin domain controllers and auxiliary driving domain controllers with quite high complexity, a hardware circuit is more complex than the independent cabin domain controllers and driving domain controllers, when the hardware circuit fails, the reasons for analyzing the failure become extremely complex, and the failure can not be rapidly located by the method for troubleshooting by using an electronic test instrument.

The prior art discloses a car networking safety control backup system, includes: the system comprises a remote server, a wireless terminal and a central control safety control system; the remote server, the wireless terminal and the central control safety control system are all in communication connection through a communication network; the central control safety control system is used for acquiring real-time running data of the vehicle when the vehicle runs, analyzing the acquired real-time running data of the vehicle and generating a corresponding abnormal data report; the central control safety control system comprises a central control processing module, a switching module, an auxiliary processing module, a main storage module, a backup storage module, a wireless communication module, a main power supply module and a standby power supply module; the central control safety control system is also used for transmitting the real-time running data of the vehicle and the corresponding abnormal data report to the wireless terminal and the remote server through the communication network at the first time. However, the method lacks self-checking and uploading processing of self-checking states for the central computing platform of the vehicle and peripheral hardware states formed by the central computing platform, and can not realize diagnosis and detection for hardware faults of the central computing platform.

Disclosure of Invention

One of the purposes of the present invention is to provide a method for diagnosing an automobile fault, so as to overcome the defect that the prior art cannot effectively detect an automobile hardware fault; the second purpose is to provide an application of the diagnosis method of the automobile fault, so as to overcome the defect that the prior art cannot effectively detect the hardware fault of the peripheral equipment of the automobile central computing platform, and facilitate the service provider to respond to maintenance and air downloading technology upgrade in time; a third object is to provide a computer device.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the invention provides a diagnosis method of automobile faults, which comprises the following steps:

s1: acquiring automobile state information, including automobile hardware self-checking fault information;

s2: storing the automobile state information into a storage device of the automobile;

s3: when the preset uploading condition is met, the storage device uploads the stored automobile state information to a background server;

s4: and the background server performs fault diagnosis based on the automobile state information to obtain a final fault result.

Preferably, the method for acquiring the self-checking fault information of the automobile hardware comprises the following steps:

in the running process of the automobile, based on a preset monitoring program, the hardware is monitored in real time, and state judgment is carried out according to real-time monitoring data, so that the self-checking fault information of the automobile hardware is obtained;

And in the process of stopping the automobile, based on a pre-authorization instruction or an instant authorization instruction of a user, judging the state of the hardware according to the historical monitoring data, and obtaining the self-checking fault information of the automobile hardware.

Preferably, the pre-authorization instruction of the user is specifically:

before the automobile stops, a user sets a self-checking instruction through a central control screen of the automobile, and when the automobile stops, the state of the hardware is judged according to the historical monitoring data.

Preferably, the instant authorization instruction of the user specifically includes:

when the automobile stops running, the user issues a self-checking instruction through the owner application of the mobile terminal, and the state of the hardware is judged according to the historical monitoring data.

Preferably, the self-checking fault information of the automobile hardware comprises any one or more of network faults, ultrasonic radar faults, memory faults, ring-looking camera faults, display screen display faults and automobile machine faults.

Preferably, in the step S2, the vehicle state information is stored in a storage device of the vehicle in a preset form, where the preset form is a log form. And recording and storing the automobile state information in a log form for automobile enterprise service engineers to check, judge and repair faults.

Preferably, the preset uploading condition comprises a first preset condition or a second preset condition;

the first preset condition is as follows: the automobile state information stored in the storage device reaches a preset data length;

the second preset condition is: the time difference between the current time and the last round of data uploading time is equal to the preset data uploading time interval.

Preferably, in step S3, the storage device uploads the vehicle status information to the background server through the 4G network.

Preferably, the step S3 further includes:

and after the storage device uploads all the automobile state information stored in the preset form to the background server, the storage device erases the uploaded automobile state information stored in the preset form for subsequent storage.

Preferably, the step S4 further includes:

repairing the final fault result; comprising the following steps:

if the final fault result is not a destructive fault, repairing by an over-the-air technology;

if the final fault result is the destructive fault, notifying the vehicle owner of the final fault result and the replacement suggestion through a preset prompting method, and replacing hardware corresponding to the destructive fault.

Further, the vehicle enterprise service engineer checks the self-checking fault information of the vehicle hardware on the background server, the user operation record of the vehicle software and the calling information of the vehicle bottom software interface to perform remote fault diagnosis and repair.

Preferably, the preset prompting method includes:

the final fault result and the replacement suggestion are directly displayed on a starting interface of a vehicle central control screen, and are sent to a vehicle owner application of a mobile terminal of a user through a 4G/5G network or are contacted with any one or more of the vehicle owners through a telephone/short message.

Preferably, the automobile state information further comprises a user operation record of automobile software and call information of an automobile bottom software interface.

Preferably, the step S4 further includes:

and the background server judges whether a final fault result is caused by user operation according to the user operation record of the automobile software, the relevance between the calling information of the automobile bottom software interface and the automobile hardware self-checking fault information.

The invention also provides application of the diagnosis method of the automobile fault, the diagnosis method is applied to the automobile central computing platform, the obtained automobile hardware self-checking fault information is the hardware self-checking fault information of the automobile central computing platform, and the follow-up steps are the same;

the automobile central computing platform comprises a driving domain controller, a cabin domain controller, a communication unit and a power supply unit;

The driving domain controller is connected with the cabin domain controller, and the driving domain controller and the cabin domain controller are also connected with the background server through communication units respectively; the power supply unit supplies power to the driving domain controller, the cabin domain controller and the communication unit.

Preferably, the driving domain controller comprises a driving domain system-on-chip module, an automatic driving system-on-chip module, a microcontroller module and a camera assembly;

the automatic driving system level chip module is respectively connected with the camera component, the microcontroller module and the driving domain system level chip module; the driving domain system-level chip module, the microcontroller module and the automatic driving system-level chip module are all connected with the communication unit, and the driving domain system-level chip module is also connected with the cabin domain controller;

the camera component is used for acquiring image data of the vehicle during automatic driving;

the automatic driving system level chip module is used for analyzing and processing the image data of the vehicle during automatic driving; when the analysis is wrong, the automatic driving system level chip module judges the corresponding camera fault and sends the camera fault to the microcontroller module; when the analysis is successful, the automatic driving system chip module transmits the image data to the cabin controller through the driving system chip module;

A heartbeat detection mechanism is arranged between the automatic driving system level chip module and the microcontroller module and is used for detecting whether the automatic driving system level chip module or the microcontroller module has faults or not; when the failure of the automatic driving system level chip module or the microcontroller module is judged, the failure of the automatic driving system level chip module or the failure of the microcontroller module is used as the hardware self-checking failure information of the automobile central computing platform, and the hardware self-checking failure information is sent to a background server through a communication unit.

Preferably, the camera assembly comprises a peripheral camera, a first front view camera, a rear view camera, a round view camera and a second front view camera;

the peripheral vision camera, the first front vision camera, the rear vision camera, the round-the-clock camera and the second front vision camera are respectively used for acquiring peripheral vision image data, first front vision image data, rear vision image data, round-the-clock image data and second camera image data of the vehicle during automatic driving.

Preferably, the autopilot system-on-chip module comprises a first autopilot system-on-chip module and a second autopilot system-on-chip module;

the first automatic driving system chip module is connected with the peripheral vision camera and the first front vision camera, and the second automatic driving system chip module is connected with the rear vision camera, the peripheral vision camera and the second front vision camera;

The first automatic driving system chip module is used for analyzing and processing the peripheral image data and the first front image data of the vehicle during automatic driving, and the second automatic driving system chip module is used for analyzing and processing the rear image data, the looking-around image data and the second front image data of the vehicle during automatic driving; when the analysis is wrong, the first automatic driving system level chip module or the second automatic driving system judges the corresponding camera fault and sends the camera fault to the microcontroller module; and when the analysis is successful, the first automatic driving system level chip module or the second automatic driving system transmits all the image data to the cabin area controller through the driving system level chip module.

Preferably, the microcontroller module comprises a first microcontroller module and a second microcontroller module;

the first microcontroller module is connected with the first automatic driving system chip module and the second automatic driving system chip module, and the second microcontroller module is connected with the first automatic driving system chip module and the second automatic driving system chip module;

and when the first automatic driving system level chip or the second automatic driving system judges the corresponding camera fault, the camera fault is sent to the first microcontroller module or the second microcontroller module.

Preferably, network heartbeat detection mechanisms are arranged between the first automatic driving system level chip module and the first microcontroller module, between the second automatic driving system level chip module and the second microcontroller module, and between the first microcontroller module and the second microcontroller module, and are used for detecting whether one or more of the first automatic driving system level chip module, the second automatic driving system level chip module, the first microcontroller module and the second microcontroller module is in failure; specific:

the first automatic driving system chip module and the second automatic driving system chip respectively send first network messages with preset communication formats to the first microcontroller module and the second microcontroller module at first preset message sending interval time;

if the first microcontroller module and the second microcontroller module do not receive the first network message with the preset communication format within the first preset message receiving interval time, judging that the corresponding automatic driving system level chip module fails;

if the first microcontroller module and the second microcontroller module receive the first network message with the preset communication format within the first preset message receiving interval time, the first microcontroller module and the second microcontroller module send first reply messages with the preset communication format to the first automatic driving system-level chip module and the second automatic driving system-level chip;

If the first automatic driving system level chip module and the second automatic driving system level chip do not receive the first reply message with the preset communication format, the first network message with the preset communication format is sent to the first microcontroller module and the second microcontroller module again, and if the first reply message with the preset communication format is not received for a plurality of times, the corresponding microcontroller module is judged to be faulty;

the first automatic driving system level chip module and the second automatic driving system level chip module take the failure of the microcontroller module as the hardware self-checking failure information of the automobile central computing platform, and send the hardware self-checking failure information to the background server through the communication unit;

the first microcontroller module and the second microcontroller module take the failure of the automatic driving system-level chip module and/or the failure of the camera as the hardware self-checking failure information of the automobile central computing platform, and send the hardware self-checking failure information to the background server through the communication unit.

The first automatic driving system chip module and the second automatic driving system chip module are responsible for analyzing and processing the automatic driving image data and identifying road conditions around the vehicle; network heartbeat detection mechanisms are arranged among the automatic driving system level chip module, the microcontroller module, the first microcontroller module and the second microcontroller module to monitor real-time states; in the automatic driving state of the vehicle, when any of the four modules, namely the first automatic driving system chip module, the second automatic driving system chip module, the first microcontroller module and the second microcontroller module, fails, a network heartbeat detection mechanism among the modules detects the failure, a failure alarm prompt is sent out on a middle screen of the cabin domain controller, the failure alarm prompt is uploaded to a background server through a communication unit, a service engineer performs failure check by downloading data from the background server, the remaining automatic driving capacity is utilized to control the vehicle, and a user waits for taking over the control of the vehicle and safely exits from the automatic driving state.

Preferably, the cabin domain controller comprises a cabin domain system-level chip module, an instrument screen, an augmented reality head-up display, a central control screen, a secondary driving screen and an audio module;

the cabin domain system-level chip module is respectively connected with the instrument screen, the augmented reality head-up display, the central control screen, the secondary driving screen and the audio module; the cabin domain system-level chip module is also respectively connected with the driving domain system-level chip module and the communication unit;

the cabin domain system level chip module is used for receiving all image data transmitted by the driving system level chip module and transmitting the image data to the instrument screen for real-time display; the instrument screen, the augmented reality head-up display, the video screen display of the secondary driving screen and the audio output of the audio module are controlled;

and the cabin domain system level chip module monitors the working states of the instrument screen, the augmented reality head-up display, the central control screen, the secondary driving screen and the audio module in real time, judges corresponding screen faults and/or audio faults when abnormal display and/or abnormal audio play are carried out, and sends the screen faults and/or audio faults to the background server through the communication unit as hardware self-checking fault information of the automobile central computing platform.

Preferably, the communication unit includes a first ethernet switch module, a second ethernet switch module, and a 4G module;

the first Ethernet switch module is respectively connected with the second Ethernet switch module, the 4G module, the driving domain system-level chip module, the first automatic driving system-level chip module, the first microcontroller module and the cabin domain system-level chip module; the second Ethernet switch module is also respectively connected with the driving domain system-level chip module, the second automatic driving system-level chip module, the second microcontroller module and the cabin domain system-level chip module;

the first Ethernet switch module and the second Ethernet switch module are used for providing a vehicle-mounted Ethernet, and the vehicle-mounted Ethernet provides a data transmission channel for each module in the vehicle; the 4G module is configured to provide an external network that is a 4G network and an over-the-air technology.

Preferably, a network heartbeat detection mechanism is arranged between the first Ethernet switch module and the first microcontroller module, and between the second Ethernet switch module and the second microcontroller module; specific:

the first microcontroller module sends a second network message with a preset communication format to the first Ethernet switch module at a second preset message sending interval time, and the first Ethernet switch module sends a second reply message with the preset communication format to the first microcontroller module after receiving the network message with the preset communication format; the second microcontroller module sends a second network message with a preset communication format to the second Ethernet switch module at a second preset message sending interval time, and the second Ethernet switch module sends a second reply message with the preset communication format to the second microcontroller module after receiving the network message with the preset communication format;

If the first microcontroller module and the second microcontroller module do not receive the second reply message with the preset communication format within the second preset message receiving interval time, judging that the corresponding Ethernet switch module fails;

the first automatic driving system level chip module and the second automatic driving system level chip module take the failure of the microcontroller module as the hardware self-checking failure information of the automobile central computing platform, and send the failure information to the background server through the first Ethernet switch module or the second Ethernet switch;

the first microcontroller module and the second microcontroller module take the failure of the automatic driving system-level chip module and/or the failure of the camera as the hardware self-checking failure information of the automobile central computing platform, and send the hardware self-checking failure information to the background server through the first Ethernet switch module and the second Ethernet switch module;

the first microcontroller module and the second microcontroller module take the faults of the Ethernet switch module as hardware self-checking fault information of the automobile central computing platform, and send the fault information to a background server through the 4G module;

the cabin domain system level chip module takes the screen fault and/or the audio fault as the hardware self-checking fault information of the automobile central computing platform, and sends the information to the background server through the first Ethernet switch module or the second Ethernet switch module.

The driving domain system level chip module collects the image data of the first automatic driving system level chip module and the second automatic driving system level chip module, and transmits all the image data to the cabin domain system level chip module, and the image data is displayed through a central control screen connected with the cabin domain system level chip module for a user to check; in the automatic driving mode, the driving domain system-level chip module analyzes and identifies the image data according to a preset analysis algorithm, and controls other controllers on the automobile by using a preset control algorithm according to an identification result to realize automatic driving.

Preferably, the power supply unit includes a first power supply module and a second power supply module;

the first power supply module is used for supplying power to the driving domain system-level chip module, the first automatic driving system-level chip module, the first microcontroller module, the cabin domain system-level chip module, the first Ethernet switch module, the peripheral camera, the first front-view camera, the instrument screen, the augmented reality head-up display, the central control screen, the secondary driving screen and the audio module; the second power supply module is used for supplying power to the second automatic driving system-level chip module, the second microcontroller module, the second Ethernet switch module, the rear-view camera, the looking-around camera and the second front-view camera.

Preferably, the first microcontroller is used for judging whether the first power supply module fails, and the second microcontroller is used for judging whether the second power supply module fails; specific:

the first microcontroller module acquires the real-time power supply voltage of the first power supply module at preset monitoring time intervals by adopting a timer interrupt method, and compares the real-time power supply voltage with the preset rated voltage of the first power supply module; when the real-time power supply voltage of the first power supply module is lower than the preset rated voltage of the first power supply module, judging that the power supply is in fault, and sending the power supply fault to a background server through a 4G module by taking the power supply fault as hardware self-checking fault information of an automobile central computing platform;

the second microcontroller module acquires the real-time power supply voltage of the second power supply module at preset monitoring time intervals by adopting a timer interrupt method, and compares the real-time power supply voltage with the preset rated voltage of the second power supply module; when the real-time power supply voltage of the second power supply module is lower than the preset rated voltage of the second power supply module, judging that the redundant power supply fails, and sending the redundant power supply fails to a background server through a 4G module as hardware self-checking failure information of an automobile central computing platform.

The service engineer performs fault investigation by downloading data from a background server, when judging that the power supply fails, the service engineer limits the power supply function of the first power supply module, and the second power supply module ensures the basic control and the normal operation of the safety function of the vehicle until the vehicle stops normally; and when the redundant power supply is judged to be in fault, limiting the automatic driving function of the user.

Preferably, the automobile central computing platform adopts an android system or a linux system.

Preferably, the driver software of the central computing platform of the automobile is provided with software interface call printing information, the bottom driver software is called when a user operates application layer software, the driver software stores the software interface call information in a special memory in a file form, the software operation record of the user and the call condition of the driver software interface are recorded, and the information is synchronized to a background server. When the central computing platform fails, a background service engineer can diagnose and analyze the reasons of the failure through the information.

Preferably, the automobile central computing platform is further provided with a temperature sensor, and the temperature sensor is used for detecting the temperature of the main board and the external environment in real time, storing information into a special memory, and diagnosing the black screen and the dead halt faults of the automobile central computing platform by a background server, wherein the fault causes are caused by unreasonable operation of a user, insufficient heat dissipation of the main board or overhigh external temperature.

The invention also provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor realizes the steps of the automobile fault diagnosis method when executing the computer program.

The invention also provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the steps of the application of the automobile fault diagnosis method.

Compared with the prior art, the technical scheme of the invention has the beneficial effects that:

the invention provides a diagnosis method of automobile faults, which comprises the steps of obtaining automobile state information comprising automobile hardware self-checking fault information, and storing the automobile state information into storage equipment of an automobile; when the preset uploading condition is met, uploading the automobile state information to a background server, and performing fault diagnosis to obtain a final fault result; the method can effectively detect the hardware faults of the automobile, and is convenient for service providers to respond to maintenance and over-the-air technology upgrading in time; the invention also provides application of the automobile fault diagnosis method, and the method is applied to the automobile central computing platform, so that the hardware fault of the automobile central computing platform and faults caused by user operation are effectively monitored, and service providers can respond to maintenance and over-the-air technology upgrading in time.

Drawings

FIG. 1 is a flowchart of a method for diagnosing an automobile fault according to embodiment 1;

FIG. 2 is a schematic diagram of the central computing platform of the automobile according to embodiment 3;

fig. 3 is a flowchart of the self-checking for camera failure according to embodiment 3;

FIG. 4 is a flow chart of the failure detection of the microcontroller module and the failure detection of the automatic driving system on chip module according to embodiment 3;

fig. 5 is a flowchart of the self-checking for ethernet switch module failure according to embodiment 3;

fig. 6 is a schematic view of a power supply area of a power supply unit according to embodiment 3;

FIG. 7 is a flow chart of the power failure detection according to embodiment 3;

FIG. 8 is a flow chart of redundant power failure detection described in example 3;

fig. 9 is a schematic structural diagram of a computer device in embodiment 3.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;

for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;

it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.

Example 1

The embodiment provides a method for diagnosing an automobile fault, as shown in fig. 1, including:

In a specific implementation process, the embodiment obtains the automobile state information including the automobile hardware self-checking fault information, and stores the automobile state information into the storage device of the automobile in a preset form; when the preset uploading condition is met, uploading the automobile state information stored in a preset form to a background server, and performing fault diagnosis to obtain a final fault result. The embodiment can effectively detect the hardware faults of the automobile, and is convenient for service providers to respond to maintenance and air downloading technology upgrading in time.

Example 2

The embodiment provides a diagnosis method for automobile faults, which comprises the following steps:

s1: acquiring automobile state information, including automobile hardware self-checking fault information, user operation records of automobile software and calling information of an automobile bottom software interface;

The method for acquiring the self-checking fault information of the automobile hardware comprises the following steps:

The pre-authorization instruction of the user specifically comprises the following steps:

before the automobile stops, a user sets a self-checking instruction through a central control screen of an automobile, and when the automobile stops, the state of hardware is judged according to historical monitoring data;

the instant authorization instruction of the user specifically comprises the following steps:

when the automobile stops running, a user issues a self-checking instruction through an owner application of the mobile terminal, and state judgment is carried out on hardware according to historical monitoring data;

the automobile hardware self-checking fault information comprises network faults, ultrasonic radar faults, memory faults, camera-around faults, display screen display faults and automobile machine faults.

S2: storing the automobile state information into a special random access memory of the automobile in a preset log form;

S3: when the preset uploading condition is met, the special random access memory uploads the automobile state information stored in the form of a log to a background server through a 4G network; after the special random access memory uploads all the automobile state information stored in the log form to the background server, the special random access memory erases the uploaded automobile state information stored in the preset form for subsequent storage;

the preset uploading conditions comprise a first preset condition or a second preset condition;

the second preset condition is: the time difference between the current time and the last round of data uploading time is equal to a preset data uploading time interval;

s4: the background server performs fault diagnosis based on the automobile state information stored in the log form to obtain a final fault result; repairing the final fault result; comprising the following steps:

the background server judges whether a final fault result is caused by user operation according to the user operation record of the automobile software, the relevance between calling information of an automobile bottom software interface and automobile hardware self-checking fault information;

The preset prompting method comprises the following steps:

The embodiment also provides a computer device, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the steps of the automobile fault diagnosis method.

Example 3

The application of the diagnosis method of the automobile fault in this embodiment applies the diagnosis method of embodiment 1 or 2 to an automobile central computing platform, wherein the automobile hardware self-checking fault information obtained in step S1 is the hardware self-checking fault information of the automobile central computing platform, and the rest steps are the same;

The automobile central computing platform comprises a driving domain controller, a cabin domain controller, a communication unit and a power supply unit; the driving domain controller is connected with the cabin domain controller, and the driving domain controller and the cabin domain controller are also connected with the background server through communication units respectively; the power supply unit supplies power to the driving domain controller, the cabin domain controller and the communication unit;

FIG. 2 is a schematic diagram of a central computing platform of an automobile; the driving domain controller comprises a driving domain system-level chip module, a first automatic driving system-level chip module, a second automatic driving system-level chip module, a first microcontroller module, a second microcontroller module, a peripheral camera, a first front view camera, a rear view camera, a surrounding camera and a second front view camera;

the first automatic driving system chip module is connected with the peripheral camera and the first front-view camera, the second automatic driving system chip module is connected with the rear-view camera, the peripheral camera and the second front-view camera, the first automatic driving system chip module is respectively connected with the first microcontroller module, the second microcontroller module and the driving domain system chip module, and the second automatic driving system chip module is respectively connected with the first microcontroller module, the second microcontroller module and the driving domain system chip module; the driving domain system chip module, the first automatic driving system chip module and the second automatic driving system chip module are respectively connected with the communication unit, and the driving domain system chip module is also connected with the cabin domain controller; the first microcontroller module is connected with the second microcontroller module;

The cabin domain controller comprises a cabin domain system-level chip module, an instrument screen, an augmented reality head-up display, a central control screen, a secondary driving screen and an audio module;

the communication unit comprises a first Ethernet switch module, a second Ethernet switch module and a 4G module;

the method for acquiring the hardware self-checking fault information of the automobile central computing platform specifically comprises the following steps:

the peripheral vision camera, the first front vision camera, the rear vision camera, the round-the-clock camera and the second front vision camera are respectively used for acquiring peripheral vision image data, first front vision image data, rear vision image data, round-the-clock image data and second camera image data of the vehicle during automatic driving;

As shown in fig. 3, a flow chart for self-checking camera faults is shown; specifically, the first autopilot system-level chip module is used for analyzing and processing the peripheral image data and the first front image data of the vehicle during autopilot, and the second autopilot system-level chip module is used for analyzing and processing the rear image data, the looking-around image data and the second front image data of the autopilot; when the analysis is successful, the first automatic driving system chip module or the second automatic driving system transmits all image data to the cabin controller through the driving system chip module; when the analysis is wrong, the first automatic driving system level chip module or the second automatic driving system judges the corresponding camera fault and sends the camera fault to the first microcontroller module or the second microcontroller module; the first microcontroller module and the second microcontroller module take the camera fault as the hardware self-checking fault information of the automobile central computing platform, and send the hardware self-checking fault information to the background server through the first Ethernet switch module and the second Ethernet switch module.

Network heartbeat detection mechanisms are arranged between the first automatic driving system level chip module and the first microcontroller module and between the second automatic driving system level chip module and the second microcontroller module, and between the first microcontroller module and the second microcontroller module; specific:

As shown in fig. 4, a flow chart of the detection of microcontroller module faults and autopilot system on chip module faults; specifically, the first autopilot system-level chip module and the second autopilot system-level chip send first network messages with preset communication formats to the first microcontroller module and the second microcontroller module respectively at first preset message sending interval time; in this embodiment, the first preset message sending interval time is 2 seconds;

if the first microcontroller module and the second microcontroller module do not receive the first network message with the preset communication format within the first preset message receiving interval time, judging that the corresponding automatic driving system level chip module fails; in this embodiment, the first preset message receiving interval time is 10 seconds;

if the first automatic driving system level chip module and the second automatic driving system level chip do not receive the first reply message with the preset communication format, the first network message with the preset communication format is sent to the first microcontroller module and the second microcontroller module again, and if the first reply message with the preset communication format is not received for a plurality of times, the corresponding microcontroller module is judged to be faulty; in this embodiment, when the number of times of continuously receiving the first reply message in the preset communication format reaches 5, the corresponding microcontroller module is determined to be faulty.

If the first automatic driving system level chip module and the second automatic driving system level chip receive a first reply message with a preset communication format, the first microcontroller module and the second microcontroller module do not have faults and continuously monitor;

the first automatic driving system level chip module and the second automatic driving system level chip module take the faults of the microcontroller module as the hardware self-checking fault information of the automobile central computing platform, and send the hardware self-checking fault information to the background server through the first Ethernet switch module and the second Ethernet switch module;

the first microcontroller module and the second microcontroller module take the failure of the automatic driving system level chip module as the hardware self-checking failure information of the automobile central computing platform, and send the hardware self-checking failure information to the background server through the first Ethernet switch module and the second Ethernet switch module;

The first Ethernet switch module and the second Ethernet switch module are used for providing a vehicle-mounted Ethernet, and the vehicle-mounted Ethernet provides a data transmission channel for each module in the vehicle; the 4G module is used for providing an external network for a 4G network and an over-the-air technology;

network heartbeat detection mechanisms are arranged among the first Ethernet switch module, the first microcontroller module, the second Ethernet switch module and the second microcontroller module;

as shown in fig. 5, a flow chart of the fault detection of the ethernet switch module is shown; specifically, the first microcontroller module sends a second network message with a preset communication format to the first ethernet switch module at a second preset message sending interval time, and the first ethernet switch module sends a second reply message with the preset communication format to the first microcontroller module after receiving the second network message with the preset communication format; the second microcontroller module sends a second network message with a preset communication format to the second Ethernet switch module at a second preset message sending interval time, and the second Ethernet switch module sends a second reply message with the preset communication format to the second microcontroller module after receiving the second network message with the preset communication format;

If the first microcontroller module and the second microcontroller module receive a second reply message with a preset communication format within a second preset message receiving interval time, the corresponding Ethernet switch module does not fail, and continuous monitoring is carried out;

The driving domain system level chip module collects the image data of the first automatic driving system level chip module and the second automatic driving system level chip module, and transmits all the image data to the cabin domain system level chip module, and the image data is displayed through a central control screen connected with the cabin domain system level chip module for a user to check; in the automatic driving mode, the driving domain system-level chip module analyzes and identifies the image data according to a preset analysis algorithm, and controls other controllers on the automobile by using a preset control algorithm according to an identification result to realize automatic driving. The first automatic driving system chip module and the second automatic driving system chip module are responsible for analyzing and processing the automatic driving image data and identifying road conditions around the vehicle; network heartbeat detection mechanisms are arranged among the automatic driving system level chip module, the microcontroller module, the first microcontroller module and the second microcontroller module to monitor real-time states; in the automatic driving state of the vehicle, when any of the four modules, namely the first automatic driving system chip module, the second automatic driving system chip module, the first microcontroller module and the second microcontroller module, fails, a network heartbeat detection mechanism among the modules detects the failure, a failure alarm prompt is sent out on a middle screen of the cabin domain controller, the failure alarm prompt is uploaded to a background server through a communication unit, a service engineer performs failure check by downloading data from the background server, the remaining automatic driving capacity is utilized to control the vehicle, and a user waits for taking over the control of the vehicle and safely exits from the automatic driving state.

As shown in fig. 6, a schematic diagram of a power supply area of the power supply unit is shown; the power supply unit comprises a first power supply module and a second power supply module;

the first power supply module is used for supplying power to the driving domain system-level chip module, the first automatic driving system-level chip module, the first microcontroller module, the cabin domain system-level chip module, the first Ethernet switch module, the peripheral camera, the first front-view camera, the instrument screen, the augmented reality head-up display, the central control screen, the secondary driving screen and the audio module; the second power supply module is used for supplying power to the second automatic driving system-level chip module, the second microcontroller module, the second Ethernet switch module, the rear-view camera, the looking-around camera and the second front-view camera;

as shown in fig. 7, a flow chart of power failure detection is shown; specifically, the first microcontroller module acquires the real-time power supply voltage of the first power supply module at preset monitoring time intervals by adopting a timer interrupt method, and compares the real-time power supply voltage with the preset rated voltage of the first power supply module; when the real-time power supply voltage of the first power supply module is not lower than the preset rated voltage of the first power supply module, the first power supply module is not failed, and continuous monitoring is carried out; when the real-time power supply voltage of the first power supply module is lower than the preset rated voltage of the first power supply module, judging that the power supply is in fault, and sending the power supply fault to a background server through a 4G module by taking the power supply fault as hardware self-checking fault information of an automobile central computing platform;

As shown in fig. 8, a flow chart for redundant power failure detection; specifically, the second microcontroller module acquires the real-time power supply voltage of the second power supply module at preset monitoring time intervals by adopting a timer interrupt method, and compares the real-time power supply voltage with the preset rated voltage of the second power supply module; when the real-time power supply voltage of the second power supply module is not lower than the preset rated voltage of the second power supply module, the second power supply module is not in fault, and continuous monitoring is carried out; when the real-time power supply voltage of the second power supply module is lower than the preset rated voltage of the second power supply module, judging that the redundant power supply fails, and sending the redundant power supply fails to a background server through a 4G module as hardware self-checking failure information of an automobile central computing platform.

In this embodiment, the preset monitoring time interval is 10 seconds. The service engineer performs fault investigation by downloading data from a background server, when judging that the power supply fails, the service engineer limits the power supply function of the first power supply module, and the second power supply module ensures the basic control and the normal operation of the safety function of the vehicle until the vehicle stops normally; and when the redundant power supply is judged to be in fault, limiting the automatic driving function of the user.

In this embodiment, the central computing platform of the automobile adopts an android system or a linux system. The method comprises the steps that software interface call printing information is reserved in driving software of an automobile central computing platform, a user calls bottom driving software when operating application layer software, the driving software stores the software interface call information in a special memory in a file mode, software operation records of the user and calling conditions of the driving software interface are recorded, and the information is synchronized to a background server. When the central computing platform fails, a background service engineer can diagnose and analyze the reasons of the failure through the information. The automobile central computing platform is further provided with a temperature sensor, and is used for detecting the temperature of the main board and the temperature of the external environment in real time, storing information into a special memory, and diagnosing the black screen and the dead halt faults of the automobile central computing platform by a background server, wherein the fault causes are caused by unreasonable operation of a user, and are caused by insufficient heat dissipation of the main board or overhigh external temperature.

When a user performs software operation through a central control screen or a central control button, the system stores operation records of the user into a special memory in a log form, and in addition, the system also stores system software interface information called by the current operation of the user into the special memory; the system can upload user operation and system software interface calling information stored in the special memory to the background server through the 4G module at intervals or when the automobile central computing platform fails, and service engineers can perform fault diagnosis and maintenance through the information.

The central computing platform can upload the hardware self-checking fault information, the system error-reporting log or the software operation log of the user of the automobile central computing platform to the background server through the 4G module based on a communication protocol between the central computing platform and the background server, so that the hardware self-checking fault information of the automobile central computing platform and the software operation log of the user can be rapidly uploaded to the background server.

The background server analyzes the received data according to a communication protocol regulated by the automobile central computing platform, the analyzed hardware state of the automobile central computing platform and the operation log of user software are stored, and a service engineer performs fault diagnosis by downloading and checking the information.

The embodiment realizes that the power supply units, the automatic driving system level chip modules, the micro controller modules and the Ethernet switch modules are redundant backups through the redundancy design, and completes the hardware state mutual monitoring and detection state reporting between the modules on the premise of not influencing the system performance; the automobile central computing platform records software operation of a user and calling information of a bottom software interface into a log, and uploads data through a 4G network channel, so that effective data support is provided for solving the problem of faults caused by the software operation of the user without logic.

As shown in fig. 9, the present embodiment also provides a computer device, at least one processor 01, at least one communication interface 02, at least one memory 03 and at least one communication bus 04.

In the embodiment of the present application, the number of the processor 01, the communication interface 02, the memory 03 and the communication bus 04 is at least one, and the processor 01, the communication interface 02 and the memory 03 complete communication with each other through the communication bus 04.

The processor 01 may be a central processing unit CPU, or a specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement embodiments of the present application, or the like.

The memory 03 may include a high-speed RAM memory, and may further include a nonvolatile memory (non-volatile memory) or the like, such as at least one magnetic disk memory.

The memory stores a program, and the processor can call the program stored in the memory, wherein the program is used for executing the steps of the application of the automobile fault diagnosis method.

The storage device may be a dedicated random access memory or may be a memory in a computer device.

The same or similar reference numerals correspond to the same or similar components;

The terms describing the positional relationship in the drawings are merely illustrative, and are not to be construed as limiting the present patent;

it is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. A method for diagnosing a failure in an automobile, comprising:

2. The method for diagnosing an automobile fault according to claim 1, wherein the method for acquiring the automobile hardware self-checking fault information comprises:

3. The method for diagnosing an automobile fault according to claim 2, wherein the pre-authorization instruction of the user is specifically:

4. The method for diagnosing an automobile fault according to claim 2, wherein the user's immediate authorization instruction is specifically:

5. The method of diagnosing a vehicle failure according to claim 2, wherein the vehicle hardware self-test failure information includes any one or more of a network failure, an ultrasonic radar failure, a memory failure, a through-the-eye camera failure, a display screen display failure, and a vehicle-to-machine failure.

6. The method according to claim 1, characterized in that in the step S2, the vehicle status information is stored in a storage device of the vehicle in a preset form, the preset form being a log form.

7. The method for diagnosing an automobile fault according to claim 1, wherein the preset uploading condition includes a first preset condition and a second preset condition;

8. The method according to claim 1, wherein in step S3, the storage device uploads the vehicle status information to the background server via the 4G network.

9. The method for diagnosing an automobile fault according to any one of claims 1-8, wherein step S3 further comprises:

and after the storage device completely uploads the automobile state information to the background server, the storage device erases the uploaded automobile state information.

10. The method for diagnosing an automobile fault according to claim 9, wherein the step S4 further comprises:

repairing the final fault result; comprising the following steps:

11. The method for diagnosing an automobile fault according to claim 10, wherein the preset prompting method comprises:

12. The method for diagnosing a vehicle fault as recited in claim 11, wherein the vehicle status information further includes a user operation record of the vehicle software and call information of an underlying software interface of the vehicle.

13. The method for diagnosing an automobile fault according to claim 12, wherein the step S4 further comprises:

14. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any of claims 1-13 when the computer program is executed.

15. The application of the diagnosis method of the automobile fault is characterized in that the diagnosis method of any one of claims 1-13 is applied to an automobile central computing platform, and the obtained automobile hardware self-checking fault information is the hardware self-checking fault information of the automobile central computing platform;

16. The use of the diagnostic method for an automotive fault of claim 15 wherein the driver-domain controller comprises a driver-domain system-on-chip module, an autopilot system-on-chip module, a microcontroller module and a camera assembly;

17. The use of the method for diagnosing an automotive malfunction according to claim 16, wherein the camera assembly includes a peripheral camera, a first front view camera, a rear view camera, a peripheral camera, and a second front view camera;

18. The use of the method for diagnosing an automotive malfunction according to claim 17, wherein the autopilot system on-chip module includes a first autopilot system on-chip module and a second autopilot system on-chip module;

19. The use of the method for diagnosing an automotive fault according to claim 18, wherein the microcontroller module comprises a first microcontroller module and a second microcontroller module;

20. The use of the method for diagnosing an automotive failure according to claim 19, wherein a network heartbeat detection mechanism is provided between the first autopilot system-on-chip module and the first microcontroller module, between the second autopilot system-on-chip module and the first microcontroller module, between the second microcontroller module, between the first microcontroller module and the second microcontroller module, for detecting whether one or more of the first autopilot system-on-chip module, the second autopilot system-on-chip module, the first microcontroller module, the second microcontroller module is failed; specific:

21. The use of the method for diagnosing an automotive malfunction according to claim 15, wherein the cabin domain controller comprises a cabin domain system on chip module, an instrument panel, an augmented reality head up display, a center control panel, a secondary drive panel, and an audio module;

22. The use of the diagnostic method for an automotive fault according to claim 19 or 21, characterized in that the communication unit comprises a first ethernet switch module, a second ethernet switch module and a 4G module;

23. The application of the method for diagnosing an automobile fault according to claim 22, wherein a network heartbeat detection mechanism is arranged between the first ethernet switch module and the first microcontroller module, and between the second ethernet switch module and the second microcontroller module; specific:

24. The use of the diagnostic method for an automotive vehicle according to claim 23, characterized in that the power supply unit comprises a first power supply module and a second power supply module;

25. The use of the method according to claim 24, wherein the first microcontroller is used to determine whether a first power module is malfunctioning and the second microcontroller is used to determine whether a second power module is malfunctioning; specific:

26. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the application of the method of any one of claims 15-25.