CN113960988A - Vehicle-mounted multimedia equipment with diagnosis function and diagnosis method - Google Patents
Vehicle-mounted multimedia equipment with diagnosis function and diagnosis method Download PDFInfo
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- CN113960988A CN113960988A CN202111349562.3A CN202111349562A CN113960988A CN 113960988 A CN113960988 A CN 113960988A CN 202111349562 A CN202111349562 A CN 202111349562A CN 113960988 A CN113960988 A CN 113960988A
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000008439 repair process Effects 0.000 claims abstract description 26
- 230000003993 interaction Effects 0.000 claims abstract description 17
- 238000013500 data storage Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims description 21
- 238000012795 verification Methods 0.000 claims description 8
- 238000002405 diagnostic procedure Methods 0.000 claims 1
- 230000008569 process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 206010063385 Intellectualisation Diseases 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004171 remote diagnosis Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0262—Confirmation of fault detection, e.g. extra checks to confirm that a failure has indeed occurred
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
A vehicle-mounted multimedia device with a diagnosis function comprises a data storage and processor and a man-machine interaction device, is in data connection with a vehicle bus, is provided with fault diagnosis software, and allows a user to carry out off-line fault diagnosis and repair under the control of the man-machine interaction device. The invention does not rely on external fault diagnosis equipment and remote data communication, has low use cost and wide application range, and improves the use experience of vehicles. The invention also provides an automobile fault diagnosis method.
Description
Technical Field
The invention belongs to the field of automobiles, and particularly relates to vehicle-mounted multimedia equipment with a diagnosis function and a diagnosis method.
Background
With the development of electromotion, intellectualization and networking of current passenger automobiles, electronic system subsystems of automobiles are continuously increased, electrical appliance network architectures are increasingly complex, the data signal transmission requirements are continuously improved, and therefore automobile fault diagnosis and elimination are increasingly complex. About 70% of time is used for troubleshooting in the traditional automobile maintenance process, the maintenance process only accounts for 30% more, and the time consumed for troubleshooting in the field of new energy automobiles is further increased. Meanwhile, with the development of automobile electromotion, the mechanical structure of a new energy automobile is simpler than that of a traditional internal combustion engine automobile, the fault occurrence rate of a mechanical layer is reduced, the faults of a software layer are increased continuously, and a considerable part of software faults can be eliminated through measures of the software layer.
According to the conventional maintenance technology, when a fault occurs, a user needs to send a vehicle to a maintenance site, and a professional maintenance technician connects the vehicle to a vehicle bus through a data interface through a special diagnosis device to perform fault diagnosis. The diagnostic equipment is in large demand and needs to be updated and maintained frequently, and higher equipment cost including annual software maintenance cost also restricts the expansion of the diagnostic service capability of a service network. While a large number of simpler faults may also occupy limited diagnostic capabilities. Meanwhile, the process of returning to and maintaining the network points and waiting for fault diagnosis and removal also consumes the time of a user, and the use experience of the vehicle is influenced.
Disclosure of Invention
The invention provides vehicle-mounted multimedia equipment with a diagnosis function and a diagnosis method, and aims to simplify the diagnosis and elimination process of vehicle faults, reduce the equipment cost of a maintenance network point and improve the diagnosis and repair efficiency of the vehicle faults.
According to an aspect of the embodiment of the invention, an in-vehicle multimedia device with a diagnosis function is provided, and the in-vehicle multimedia device comprises a data storage and processor and a man-machine interaction device. The data storage and processor is provided with vehicle fault diagnosis software and is connected with a vehicle bus signal; the fault diagnosis software includes an updatable fault code information base and corresponding repair code. And a user can operate the fault diagnosis software through the man-machine interaction device to diagnose and repair the vehicle fault.
The vehicle-mounted multimedia equipment integrates diagnosis software, can finish diagnosis and repair of faults without additional hardware, saves equipment cost and improves diagnosis efficiency.
Further, the fault diagnosis software reads signals through a vehicle bus according to a vehicle fault diagnosis protocol for fault diagnosis and repair, wherein the vehicle bus comprises a LIN bus, a CAN bus, an Ethernet bus or a FlexRay bus, and the fault diagnosis protocol comprises ISO15765, ISO14229, ISO13400, KWP2000 or SAE J1939. This makes the multimedia device suitable for fault diagnosis and removal in a variety of application scenarios.
Further, the upgrading and updating mode of the fault diagnosis software comprises USB, OBD or remote online upgrading. The user can download the installation update by himself through the USB interface, or install the update through the OBD when the maintenance network carries out routine maintenance upgrade, and can also update the fault diagnosis software and the database thereof through OTA and other remote online modes.
Further, the vehicle-mounted multimedia device is pre-stored with identity authentication information for use authority authentication of the fault diagnosis software. The verification information is used for protecting the information safety of the vehicle and avoiding malicious intrusion.
Optionally, the vehicle-mounted multimedia device includes a vehicle-mounted multimedia center control, a touch instrument, a touch head-up display device (HUD) touch multimedia rearview mirror, or a touch multimedia entertainment terminal. With the abundance of the types of vehicle-mounted electronic equipment, a central control system, a multimedia instrument, a HUD, a multimedia or streaming media rearview mirror and a touch multimedia entertainment terminal arranged in a passenger car or a rear row range can be configured as vehicle-mounted multimedia equipment with a diagnosis function.
According to another aspect of the embodiments of the present invention, there is provided an automobile fault diagnosis method, where the method provides an on-board multimedia device with vehicle fault diagnosis software installed, and the on-board multimedia device is any one of the on-board multimedia devices, and the method includes the following steps:
a) a user starts the fault diagnosis software through a man-machine interaction device and reads vehicle data through a vehicle bus;
b) the fault diagnosis software matches the read vehicle data with locally stored diagnosis data to generate an off-line diagnosis report and outputs the off-line diagnosis report to a user through the human-computer interaction device;
c) and the user instructs the fault diagnosis software to carry out off-line repair on the found fault through the man-machine interaction device according to the output of the fault diagnosis software.
The diagnosis method utilizes the multimedia equipment carried by the vehicle to carry out off-line diagnosis and repair on the fault, does not need to use external special equipment, does not need to carry out remote data exchange with the outside, simplifies the diagnosis and repair process, reduces the diagnosis and maintenance cost, has wide application range, and can finish the diagnosis and repair of the fault in places with poor network signals, such as underground garages or tunnels.
Further, the step a) further comprises an identity authentication step, wherein the identity authentication step matches authentication information input by a user with information stored in the vehicle-mounted multimedia device, and the authentication information comprises a pre-written fixed or dynamic secret key.
The identity authentication step enhances the safety of vehicle information, and a user or a special maintenance person can obtain the corresponding authority for operating the fault diagnosis software only through a fixed secret key recorded during vehicle delivery, such as a registered account password, face recognition or fingerprint information or a dynamic secret key, such as a verification code sent to a specified mobile phone.
Further, in the step c), when the fault diagnosis software cannot complete off-line repair of the fault, the man-machine interaction device gives an alarm, and the diagnosis and maintenance data are stored in the vehicle-mounted multimedia device as a data packet which can be read and output.
When a vehicle has serious faults and hardware damage which cannot be automatically repaired by fault diagnosis software, warning information is sent to a user to indicate the user to transfer the vehicle to a professional maintenance network for further maintenance on the premise of ensuring safety, and meanwhile, a data packet which is read by a maintenance worker is generated so that the professional maintenance worker can quickly complete the repair work.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle-mounted multimedia device in an automobile electrical network.
Reference signs mean:
1-vehicle multimedia equipment; 2-a radar controller; 3-a tire pressure sensor; 4-a vehicle body control module; 5-bus.
The drawings are intended to illustrate the present invention in detail so that those skilled in the art can understand the technical idea of the inventor, and not to specifically limit the embodiments of the present invention.
Detailed Description
The following further describes embodiments of the present invention by way of specific examples in conjunction with the accompanying drawings.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprises" and "comprising," and equivalents thereof, in the description and claims of this application and in the description of the above-described figures, are intended to cover non-exclusive inclusions.
In the description of the embodiments of the present application, unless explicitly stated or limited otherwise, the technical terms "mounted," "connected," and the like are to be understood in a broad sense, and may be, for example, mechanically connected or in signal connection; the method can be fixed and assembled on a physical structure, and can also be used for installing program software and writing data. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.
At present, along with the development of automobile electromotion, intellectualization and networking, the complexity of an automobile electronic system is continuously improved, and the difficulty of diagnosing automobile faults is higher and higher. In addition to mechanical faults, the number and types of faults in the software layer are increasing, which makes it increasingly difficult for the conventional external fault diagnosis device to meet the diversified and fast-paced diagnosis and maintenance requirements of users. Meanwhile, the vehicle service environment is complex, and the vehicle is often in a scene with poor network signals such as an underground garage or a tunnel, and under the conditions, the on-line remote diagnosis service is difficult to meet the diagnosis and repair requirements of users in time. The inventor realizes that the vehicle-mounted multimedia equipment with the diagnosis function and the diagnosis method can reduce the diagnosis and repair cost of vehicle faults, improve the practical efficiency and improve the use experience.
According to an aspect of an embodiment of the present invention, there is provided an in-vehicle multimedia apparatus having a diagnosis function.
As shown in fig. 1, the vehicle-mounted multimedia device 1 with the diagnosis function is in signal connection with various electrical devices in the vehicle through a bus 5, and comprises a radar controller 2, a tire pressure sensor 3 level vehicle body control module 4 and the like. Specifically, in this embodiment, the vehicle-mounted multimedia device 1 is a vehicle-mounted multimedia central control, and the bus 5 is a CAN bus. The vehicle-mounted multimedia center control 1 comprises a data storage and processor and a touch screen serving as a man-machine interaction device, and fault diagnosis software is installed in the data storage and processor and comprises an updatable fault code information base and a repair code corresponding to the updatable fault code information base. Based on an ISO15765 diagnostic protocol, fault diagnosis software CAN read vehicle information through a CAN bus under the instruction of a user to carry out fault diagnosis and repair on the vehicle. Meanwhile, the fault diagnosis software can be downloaded, installed and updated through an external storage device of the USB structure. The account number and password information registered during vehicle delivery can be pre-stored in the data storage and processor of the vehicle-mounted multimedia central controller 1 and used for authority verification when the fault diagnosis software is started.
In other embodiments, the vehicle-mounted multimedia device 1 may also be a touch instrument, a touch head-up display device, a touch multimedia or streaming media rearview mirror, or other touch multimedia entertainment terminal disposed at a passenger car or a rear row position. Any multimedia device having an operation interface with a human-computer interaction function and a data storage and processor capable of data storage and processing can be used as a specific embodiment of the present invention.
The bus 5 may further include a LIN bus, an Ethernet bus, or a FlexRay bus, and the fault diagnosis protocol may further include ISO14229, ISO13400, KWP2000, and SAE J1939, depending on the vehicle specific appliance network architecture.
According to different hardware configurations and use scenes, the diagnostic software can be updated and upgraded through OBD and remote on-line (OTA) independently or simultaneously besides USB upgrading.
According to another aspect of the embodiments of the present invention, there is provided a vehicle fault diagnosis method.
The vehicle of the user is equipped with a vehicle-mounted multimedia device, specifically a vehicle-mounted multimedia central control device in the present embodiment, which is installed with vehicle fault diagnosis software, and can operate the software through a touch screen as a human-computer interaction device. The user finds that the vehicle instrument display alarm lamp is on, and the vehicle-mounted radar signal at the front part is prompted to be lost, so that fault diagnosis and repair are needed. The process method comprises the following steps:
a) the user starts fault diagnosis software through a central control touch screen, enters an identity authentication step, inputs an account number and a password registered during vehicle delivery to finish verification, and the fault diagnosis software confirms the user right and reads bus data according to an instruction;
b) the fault diagnosis software reads the fault code, matches the fault code with the locally stored diagnosis data, and generates a diagnosis report to be displayed on a screen for a user to read;
c) the user repairs through the central control touch screen instruction according to the prompt of the diagnosis software, and the vehicle-mounted central control sends out an instruction through the CAN bus 5, so that the radar controller 2 is restarted and the fault is eliminated.
The identity authentication step can be completed through the registered account password, and also can be verified through prestored biological information such as face recognition or fingerprint information, or authentication is performed by sending a dynamic secret key verification code to a specified mobile phone.
In another embodiment, the user finds that the gauge indicates that the tire pressure warning lamp is on and needs to be diagnosed and repaired. After the same verification step, the fault diagnosis software reads the signals of the tire pressure sensors, and generates a report to display that the tire pressure of one of the tires is too low, so that the possibility of tire burst exists. The user operates the vehicle-mounted maintenance tool box to complete the replacement of the spare tire according to the instruction of the diagnostic software, and the spare tire is replaced and maintained by the network point when the vehicle is opened under the safety speed limit of the use of the spare tire. And the maintenance network worker reads the diagnosis report and repairs or replaces the tire.
In yet another embodiment, the user finds that the vehicle is out of power, a plurality of warning lights of the meter are on, and a fault diagnosis and repair is required. After the same verification step, the fault diagnosis software reads data of a plurality of sensor controllers through the bus, and generates a report to display that the BCM (body control Module) 4 is damaged, the current state of the vehicle cannot be safely driven, and the fault cannot be eliminated off line. And the user contacts road rescue according to the diagnostic software instruction and conveys the vehicle to a maintenance site for repair. And (4) reading the diagnosis report by the staff of the maintenance network, further judging that corrosion short circuit occurs to BCM waterproof damage, and removing the fault after replacing the BCM module.
It should be understood that the above-mentioned embodiments are intended to describe the present invention in further detail so that those skilled in the art can understand the technical idea of the inventor, and do not constitute a specific limitation to the embodiments of the present invention. Equivalent substitutions or modifications of parts, structures or method steps involved, as well as combinations of embodiments of the various embodiments without conflict, are intended to be included within the scope of the present claims.
Claims (8)
1. The vehicle-mounted multimedia equipment with the diagnosis function comprises a data storage and processor and a human-computer interaction device, and is characterized in that vehicle fault diagnosis software is installed on the data storage and processor and is connected with a vehicle bus signal, and the fault diagnosis software comprises an updatable fault code information base and a corresponding repair code, so that a user can operate the fault diagnosis software through the human-computer interaction device to diagnose and repair vehicle faults.
2. The vehicle-mounted multimedia device according to claim 1, wherein the fault diagnosis software reads signals for fault diagnosis and repair through a vehicle bus according to a vehicle fault diagnosis protocol, wherein the vehicle bus comprises a LIN bus, a CAN bus, an Ethernet bus or a FlexRay bus, and the fault diagnosis protocol comprises ISO15765, ISO14229, ISO13400, KWP2000 or SAEJ 1939.
3. The vehicle-mounted multimedia device of claim 1 or 2, wherein the upgrading updating mode of the fault diagnosis software comprises USB, OBD or remote online upgrading.
4. The vehicle-mounted multimedia device according to claim 1 or 2, wherein the vehicle-mounted multimedia device has authentication information pre-stored therein for use authority verification of the fault diagnosis software.
5. The vehicle-mounted multimedia device according to claim 1 or 2, wherein the vehicle-mounted multimedia device comprises a vehicle-mounted multimedia center control, a touch instrument, a touch head-up display device, a touch multimedia rearview mirror or a touch multimedia entertainment terminal.
6. A vehicle failure diagnosis method, characterized in that, a vehicle-mounted multimedia device with vehicle failure diagnosis software installed is provided, the vehicle-mounted multimedia device is the vehicle-mounted multimedia device of any one of claims 1 to 5, comprising the following steps:
a) a user starts the fault diagnosis software through a man-machine interaction device and reads vehicle data through a vehicle bus;
b) the fault diagnosis software matches the read vehicle data with locally stored diagnosis data to generate an off-line diagnosis report and outputs the off-line diagnosis report to a user through the human-computer interaction device;
c) and the user instructs the fault diagnosis software to carry out off-line repair on the found fault through the man-machine interaction device according to the output of the fault diagnosis software.
7. The diagnostic method according to claim 6, wherein the step a) further comprises an authentication step of matching authentication information input by a user with information stored in the in-vehicle multimedia device, wherein the authentication information comprises a pre-written fixed or dynamic key.
8. The diagnosis method according to claim 6 or 7, wherein in step c), when the fault diagnosis software cannot complete off-line repair of the fault, the warning is given through the human-computer interaction device, and the diagnosis and maintenance data is stored in the vehicle-mounted multimedia device as a data packet which can be read and output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111349562.3A CN113960988A (en) | 2021-11-15 | 2021-11-15 | Vehicle-mounted multimedia equipment with diagnosis function and diagnosis method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111349562.3A CN113960988A (en) | 2021-11-15 | 2021-11-15 | Vehicle-mounted multimedia equipment with diagnosis function and diagnosis method |
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| CN113960988A true CN113960988A (en) | 2022-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115102826A (en) * | 2022-06-17 | 2022-09-23 | 华侨大学 | Communication system and method for electric engineering machinery, upper computer and vehicle control unit |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
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