CN113156921A - Vehicle fault diagnosis system, method and storage medium - Google Patents
Vehicle fault diagnosis system, method and storage medium Download PDFInfo
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Abstract
The invention discloses a vehicle fault diagnosis system, a method and a storage medium, comprising the following steps: the data receiving and sending module is used for acquiring data information of the vehicle; the data caching module is in communication connection with the data receiving and sending module and is used for receiving the data information and caching to obtain cached data; and the data storage processing module is in communication connection with the data cache module and is used for receiving a storage triggering instruction, selecting target data from the cache data according to the storage triggering instruction, performing fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data. When the fault is judged to occur, the fault code is only output, the related cache data is stored, so that the analysis is called when the fault is analyzed, and the analysis is carried out by combining the stored fixed storage data, so that the fault reason can be more quickly determined.
Description
Technical Field
The invention relates to the field of automobile fault diagnosis, in particular to a vehicle fault diagnosis system, a vehicle fault diagnosis method and a storage medium.
Background
Along with the continuous development of automobile electronic technology, the number of integrated ECUs on an automobile is increasing, which creates a challenge for the rapid location of the failure of the ECU, and therefore, intelligent automobile failure diagnosis systems and methods are being derived. In the conventional automobile fault diagnosis system, a fault code is acquired through equipment such as a diagnostic instrument, an operator judges fault data corresponding to the fault code, and compares the data with a set threshold value to judge the cause of the fault code, so that the problem is quickly positioned. However, only fault judgment is performed according to fault codes, on one hand, the professional requirements on operators are high, on the other hand, output information is limited, and the difficulty of fault analysis is increased.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings in the background art, and provides a vehicle fault diagnosis system, method and storage medium, wherein when a fault is determined, not only a fault code is output, but also relevant cache data is stored, so that analysis is invoked when the fault is analyzed, and analysis is performed in combination with stored fixed storage data, which helps to determine the cause of the fault more quickly.
In a first aspect, a vehicle fault diagnosis system is provided, including:
the data receiving and sending module is used for acquiring data information of the vehicle;
the data caching module is in communication connection with the data receiving and sending module and is used for receiving the data information and caching to obtain cached data;
and the data storage processing module is in communication connection with the data cache module and is used for receiving a storage triggering instruction, selecting target data from the cache data according to the storage triggering instruction, performing fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data.
According to the first aspect, in a first possible implementation manner of the first aspect, the method further includes:
and the fault instruction judging module is in communication connection with the data receiving and sending module and the data storage and processing module and is used for receiving the data information, acquiring and sending a fault instruction when a fault is judged according to the data information, and the storage triggering instruction comprises the fault instruction.
According to the first aspect, in a second possible implementation manner of the first aspect, the data storage processing module includes:
the data storage triggering unit is used for receiving the storage triggering instruction and generating a storage instruction according to the storage triggering instruction;
the data storage management unit is in communication connection with the data storage triggering unit and is used for acquiring a command level according to the storage command and acquiring a currently executed storage command level if the data storage management unit is in a data storage state at present, selecting target data from the cache data according to the storage command if the command level is higher than the storage command level, and performing fault analysis according to the target data to obtain fault analysis data;
and the data fixed storage unit is in communication connection with the data storage management unit and is used for storing the target data and the fault analysis data to obtain fixed storage data.
According to a second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the data storage management unit is further configured to, if the instruction level is higher than the storage instruction level, obtain a target data type and a fault occurrence time according to the storage instruction, select target data from the cached data according to the target data type and the fault occurrence time, and perform fault analysis according to the target data to obtain fault analysis data.
According to a third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the data fixed storage unit is in communication connection with the data caching module, and is further configured to obtain and store new cache data corresponding to the target data type in the cache data after the data fixed storage unit stores the fixed storage data.
According to a fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the data storage processing module further includes:
the data storage label unit is in communication connection with the data storage management unit and is used for generating a storage label according to the storage instruction, and the storage label comprises the storage triggering instruction, the instruction level, the target data type and the fault occurrence time;
the data fixed storage unit is in communication connection with the data storage label unit and is used for receiving and storing the storage label and establishing association between the storage label and the stored fixed storage data.
According to a second possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the data storage management unit is further configured to continue executing the current storage instruction if the instruction level is not higher than the storage instruction level.
According to the first aspect, in a fourth possible implementation manner of the first aspect, the method further includes:
and the data transmission export management module is in communication connection with the data storage processing module and is used for acquiring a diagnosis instruction and acquiring diagnosis data from the fixed storage data according to the diagnosis instruction.
In a second aspect, there is provided a vehicle fault diagnosis method including the steps of:
acquiring data information of a vehicle, and caching to obtain cached data;
receiving a storage trigger instruction, and selecting target data from the cache data according to the storage trigger instruction;
and carrying out fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data.
In a third aspect, there is provided a storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the vehicle fault diagnosis method described above.
Compared with the prior art, when the fault is judged, the fault code is only output, the related cache data is stored, so that the analysis is called when the fault is analyzed, and the analysis is carried out by combining the stored fixed storage data, so that the fault reason can be determined more quickly.
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Fig. 1 is a schematic structural diagram of a vehicle fault diagnosis system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a vehicle fault diagnosis system provided by another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vehicle fault diagnosis system provided by another embodiment of the present invention;
fig. 4 is a schematic flow chart of a vehicle fault diagnosis method according to an embodiment of the present invention.
Reference numerals:
100. a vehicle fault diagnostic system; 110. a data receiving and sending module; 1120. a data caching module; 130. a data storage processing module; 131. a data storage triggering unit; 132. a data storage management unit; 133. a data fixed storage unit; 134. a data storage tag unit; 140. a fault instruction judgment module; 150. and a data transmission export management module.
Detailed Description
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. While the invention will be described in conjunction with the specific embodiments, it will be understood that they are not intended to limit the invention to the embodiments described. On the contrary, it is intended to cover alternatives, modifications, and equivalents as may be included within the spirit and scope of the invention as defined by the appended claims. It should be noted that the method steps described herein may be implemented by any functional block or functional arrangement, and that any functional block or functional arrangement may be implemented as a physical entity or a logical entity, or a combination of both.
In order that those skilled in the art will better understand the present invention, the following detailed description of the invention is provided in conjunction with the accompanying drawings and the detailed description of the invention.
Note that: the example to be described next is only a specific example, and does not limit the embodiments of the present invention necessarily to the following specific steps, values, conditions, data, orders, and the like. Those skilled in the art can, upon reading this specification, utilize the concepts of the present invention to construct more embodiments than those specifically described herein.
Referring to fig. 1, an embodiment of the present invention provides a vehicle fault diagnosis system 100, including:
the data receiving and sending module 110 is used for acquiring data information of the vehicle;
the data caching module 120 is in communication connection with the data receiving and sending module 110, and is configured to receive the data information and cache the data information to obtain cached data;
and the data storage processing module 130 is in communication connection with the data caching module 120, and is configured to receive a storage trigger instruction, select target data from the cached data according to the storage trigger instruction, perform fault analysis according to the target data to obtain fault analysis data, and store the target data and the fault analysis data to obtain fixed storage data.
Specifically, in the embodiment, the central gateway controller is used for connecting the position advantage of the whole vehicle network, the gateway is connected with various ECUs on the vehicle, and the central network is selected to be responsible for collecting and storing CAN network data of the whole vehicle and respond to data extraction instructions sent by devices such as a diagnostic instrument/MP 5/T-BOX and the like to complete data transmission and export.
The data receiving and sending module 110 obtains data information of the vehicle, and caches the data information in the data caching module 120 to obtain cached data, so that when data needs to be extracted, the data of the required data type and corresponding time can be extracted from the data caching module 120. The data information is operation data and status data of each current device module of the vehicle, which are sent to the central gateway by each Electronic Control Unit (ECU) on the vehicle.
When the data storage processing module 130 receives the storage triggering instruction, the data storage processing module 130 starts the management work of data storage, including: whether data storage can be carried out in response to a storage triggering instruction; determining in which block data is stored; the judgment determines that a block of the storage unit is sent out a formatted instruction. In addition, preliminary fault analysis can be performed on the stored data. The storage triggering instruction comprises a fault instruction, a remote instruction and the like, all the instructions are processed in a grading mode, and the processing priorities of the instructions in different grades are different. The fault instruction is triggered by a fault set in the intelligent diagnosis system; the remote instruction is an instruction sent when equipment such as a diagnostic instrument/MP 5/T-BOX and the like needs to perform data acquisition. When the received storage trigger instruction is a fault instruction, in order to guarantee the validity of the fault instruction, the trigger condition is set after the vehicle is electrified for a set time.
The data storage processing module 130 selects target data from the cache data cached by the data cache module 120 according to the storage trigger instruction, the data storage processing module 130 performs fault analysis according to the target data, compares and analyzes data information with threshold data of a set fault condition, judges a fault reason, obtains fault analysis data according to information such as whether the data analysis result is analyzed, whether the analysis is successful, the fault reason and the like, and finally stores the target data and the fault analysis data to obtain fixed storage data so as to be called when the fault reason is determined subsequently.
When the fault is judged to occur, the fault code is only output, the related cache data is stored, so that the analysis is called when the fault is analyzed, and the analysis is carried out by combining the stored fixed storage data, so that the fault reason can be more quickly determined.
Optionally, as shown in fig. 2, in another embodiment of the present invention, a failure instruction determining module 140 is further included, and the failure instruction determining module 140 is communicatively connected to the data receiving and sending module 110 and the data storage processing module 130. The fault instruction judging module 140 receives the received data information sent by the data receiving and sending module 110, when the fault instruction judging module 140 judges that a fault occurs according to the data information, for example, some state parameters are abnormal or exceed a threshold value, the fault instruction judging module 140 obtains a fault code from an analysis module of a corresponding ECU, in order to reduce data processing amount, the fault instruction judging module 140 does not analyze the fault instruction by the abnormal data information, and the storage triggering instruction comprises a fault instruction, wherein the fault instruction comprises the fault code, the time when the fault occurs and a data type related to the fault.
Optionally, as shown in fig. 3, in another embodiment of the present invention, the data storage processing module 130 includes:
the data storage triggering unit 131 is configured to receive the storage triggering instruction and generate a storage instruction according to the storage triggering instruction;
a data storage management unit 132, communicatively connected to the data storage triggering unit 131, configured to, if the data storage triggering unit is currently in a data storage state, obtain a level of an instruction according to the storage instruction, and obtain a level of a currently executed storage instruction, and if the level of the instruction is higher than the level of the storage instruction, select target data from the cache data according to the storage instruction, and perform fault analysis according to the target data to obtain fault analysis data; if the instruction level is not higher than the storage instruction level, continuing to execute the current storage instruction;
and a data fixed storage unit 133, communicatively connected to the data storage management unit 132, and configured to store the target data and the fault analysis data to obtain fixed storage data.
Specifically, in this embodiment, the data storage processing module 130 includes: a data storage triggering unit 131, a data storage managing unit 132, and a data fixing storage unit 133. The data storage triggering unit 131 is configured to receive a storage triggering instruction, which indicates that the cached data needs to be fixedly stored currently, and therefore, a storage instruction is generated according to the storage triggering instruction.
The data storage management unit 132 is in communication connection with the data storage triggering unit 131, and the data storage management unit 132 receives a storage instruction sent by the data storage triggering unit 131 and starts data storage work. The data storage management unit 132 determines whether data storage can be performed in response to the storage instruction, and the specific process is as follows: if the data storage management unit 132 does not currently perform any task of storing data, data storage may be performed directly corresponding to the storage instruction.
If the data storage management unit 132 is currently in a state of storing data, it is determined that the levels of the currently executed storage instruction level and the instruction level corresponding to the storage instruction are high or low, and the processing priorities of different instruction levels are set in advance. And if the instruction level is not higher than the storage instruction level, continuing to execute the current storage instruction without considering a new storage instruction. And if the instruction level is higher than the storage instruction level, stopping the currently stored work, quickly formatting the block of the currently stored data, responding to a new storage instruction, selecting target data from the cache data according to the storage instruction, and performing fault analysis according to the target data to obtain fault analysis data.
The data fixing storage unit 133 is in communication connection with the data storage management unit 132, and the data fixing storage unit 133 stores the target data selected by the data storage management unit 132 and the analyzed fault analysis data to obtain fixing storage data. The data storage management unit 132 allocates the blocks storing the fixed storage data according to the current storage condition of the data fixed storage unit 133, and the data storage management unit 132 determines whether any block in the data fixed storage unit 133 needs to be formatted, and determines whether the storage command can respond, so that not only the level of the storage command needs to be determined, but also whether the fixed storage unit of itself meets the storage condition, where the conditions of the fixed storage unit include: and identifying whether the target storage block is formatted.
The invention sets the instruction level, and judges whether to execute or not according to the instruction level when triggering the storage instruction, thereby ensuring that no conflict exists during data storage and the most needed data can be stored.
Alternatively, in another embodiment of the present invention, if the instruction level is higher than the storage instruction level, the data storage management unit 132 acquires a target data type and a fault occurrence time according to the storage instruction, where the target data type is a data type related to the fault or a data type required to be acquired in the instruction. And selecting target data from the buffer data according to the type of the target data and the fault occurrence time, wherein the data with the preset time length before can be obtained according to the fault occurrence time, and the target data can be analyzed more comprehensively when fault analysis is carried out according to the target data to obtain fault analysis data, so that omission is avoided.
Optionally, in another embodiment of the present invention, the data fixing storage unit 133 is further communicatively connected to the data caching module 120, and after the data storage management unit 132 responds to the new storage instruction and the data fixing storage unit 133 stores the fixed storage data, the data caching module 120 continues to cache the data corresponding to the target data type, so that the data fixing storage unit 133 obtains and stores the new cache data corresponding to the target data type in the cache data, that is, the block corresponding to the data fixing storage unit 133 stores the fixed storage data and also continuously stores the new cache data corresponding to the target data type. The storage can be performed in a time sequence, and the storage is finished until the space of the specific storage block is used up. After the data storage is completed, the fixed storage unit feeds back the stored instruction to the data storage management unit 132. The data storage management unit 132 determines a block to be formatted and sends a data formatting command to the fixed storage unit. : the fixed storage unit completes the data formatting operation and feeds back instructions to the data storage management unit 132.
The fixed storage data stored in the invention is data of a period of time before the trigger instruction is triggered and a period of time after the trigger condition is stored, and more comprehensive data can be provided for analyzing the cause of the vehicle fault.
Optionally, in another embodiment of the present invention, the data storage processing module 130 further includes:
a data storage tag unit 134, communicatively connected to the data storage managing unit 132, configured to generate a storage tag according to the storage instruction, where the storage tag includes the storage trigger instruction, the instruction level, the target data type, and the fault occurrence time;
the data fixing storage unit 133 is in communication connection with the data storage tag unit 134, and is configured to receive and store the storage tag, and establish a relationship between the storage tag and the stored target data and the stored failure analysis data.
Optionally, in this embodiment, the data storage processing module 130 further includes a data storage tag unit 134, and the data storage tag unit 134 is connected in communication with the data storage management unit 132, and adds a tag to the data to be determined to be stored, so as to ensure uniqueness of the data. The data storage tag unit 134 generates a storage tag according to the storage instruction sent by the data storage management unit 132, where the storage tag includes a storage trigger instruction, an instruction level, a target data type, and a failure occurrence time. The data fixing storage unit 133 is in communication connection with the data storage tag unit 134, and the data fixing storage unit 133 receives and stores the storage tag, and meanwhile, the storage tag is associated with the stored fixing storage data, so that the storage position of the data can be quickly located so as to be called.
Optionally, in another embodiment of the present invention, the data transmission export management module 150 is further included, the data transmission export management module 150 is in communication connection with the data storage processing module 130, the data transmission export management module 150 performs information confirmation with devices such as the diagnostic apparatus/MP 5/T-BOX, and obtains a diagnostic instruction, the diagnostic instruction includes a data type and a time point that need to be obtained, and the data transmission export management module 150 obtains the data type and diagnostic data corresponding to the time point from the fixed storage data according to the diagnostic instruction. In addition, the diagnostic data processing device also comprises a data protocol conversion module, wherein the data protocol conversion module is in communication connection with the data storage processing module 130 and the data transmission and delivery management module 150, and converts the acquired diagnostic data according to a protocol well specified by equipment such as a diagnostic instrument/MP 5/T-BOX and the like. The converted data is transmitted to a diagnostic apparatus/MP 5/T-BOX and other devices through a data receiving and transmitting module 110.
The invention obtains data when the vehicle has faults, the data is fixedly stored and can be exported through equipment such as a diagnostic instrument/MP 5/T-BOX, and the like, and data basis is provided when the fault cause is analyzed. And no additional external device is added, the existing controller on the vehicle is fully utilized, and the acquisition and storage of vehicle-mounted data can be completed. The stored data comprises data before and after a specific moment, and analysis and use are facilitated.
As shown in fig. 4, a vehicle fault diagnosis method includes the steps of:
acquiring data information of a vehicle, and caching to obtain cached data;
receiving a storage trigger instruction, and selecting target data from the cache data according to the storage trigger instruction;
and carrying out fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data.
Optionally, the method further includes, after obtaining data information of the vehicle and obtaining the cache data by caching, receiving a storage trigger instruction, and before selecting target data from the cache data according to the storage trigger instruction:
and when a fault is judged to occur according to the data information, a fault instruction is obtained, and the storage triggering instruction comprises the fault instruction.
Optionally, receiving a storage trigger instruction, and selecting target data from the cache data according to the storage trigger instruction specifically includes:
receiving the storage triggering instruction, and generating a storage instruction according to the storage triggering instruction;
if the current state is the state of storing data, obtaining the instruction grade according to the storage instruction, and obtaining the currently executed storage instruction grade;
if the instruction level is higher than the storage instruction level, selecting target data from the cache data according to the storage instruction;
and if the instruction level is not higher than the storage instruction level, continuing to execute the current storage instruction.
Optionally, if the instruction level is higher than the storage instruction level, selecting target data from the cache data according to the storage instruction, specifically including:
if the instruction level is higher than the storage instruction level, acquiring a target data type and fault occurrence time according to the storage instruction;
and selecting target data from the cache data according to the target data type and the fault occurrence time.
Optionally, after performing fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data, the method further includes:
and after the fixed storage data is stored, acquiring and storing new cache data corresponding to the target data type in the cache data.
Optionally, after performing fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data, the method further includes:
generating a storage tag according to the storage instruction, wherein the storage tag comprises the storage triggering instruction, the instruction level, the target data type and the fault occurrence time;
and storing the storage tag, and establishing association between the storage tag and the stored fixed storage data.
Optionally, after performing fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data, the method further includes:
acquiring a diagnosis instruction, and acquiring diagnosis data from the fixed storage data according to the diagnosis instruction;
and converting the diagnostic data according to the format requirement in the diagnostic instruction.
Specifically, the implementation manner of each step in this embodiment has been elaborated in the above corresponding system embodiment, and therefore, a description thereof is not repeated.
Based on the same inventive concept, the embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements all or part of the method steps of the above method.
The present invention can implement all or part of the processes of the above methods, and can also be implemented by using a computer program to instruct related hardware, where the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer readable medium may include: any entity or device capable of carrying computer program code, recording medium, U.S. disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution media, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, in accordance with legislation and patent practice, the computer readable medium does not include electrical carrier signals and telecommunications signals.
Based on the same inventive concept, an embodiment of the present application further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program running on the processor, and the processor executes the computer program to implement all or part of the method steps in the method.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor being the control center of the computer device and the various interfaces and lines connecting the various parts of the overall computer device.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the computer device by executing or executing the computer programs and/or modules stored in the memory, as well as by invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (e.g., a sound playing function, an image playing function, etc.); the storage data area may store data (e.g., audio data, video data, etc.) created according to the use of the cellular phone. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, server, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), servers and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A vehicle fault diagnosis system characterized by comprising:
the data receiving and sending module is used for acquiring data information of the vehicle;
the data caching module is in communication connection with the data receiving and sending module and is used for receiving the data information and caching to obtain cached data;
and the data storage processing module is in communication connection with the data cache module and is used for receiving a storage triggering instruction, selecting target data from the cache data according to the storage triggering instruction, performing fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data.
2. The vehicle fault diagnosis system according to claim 1, further comprising:
and the fault instruction judging module is in communication connection with the data receiving and sending module and the data storage and processing module and is used for receiving the data information, acquiring and sending a fault instruction when a fault is judged according to the data information, and the storage triggering instruction comprises the fault instruction.
3. The vehicle fault diagnostic system of claim 1, wherein the data storage processing module comprises:
the data storage triggering unit is used for receiving the storage triggering instruction and generating a storage instruction according to the storage triggering instruction;
the data storage management unit is in communication connection with the data storage triggering unit and is used for acquiring a command level according to the storage command and acquiring a currently executed storage command level if the data storage management unit is in a data storage state at present, selecting target data from the cache data according to the storage command if the command level is higher than the storage command level, and performing fault analysis according to the target data to obtain fault analysis data;
and the data fixed storage unit is in communication connection with the data storage management unit and is used for storing the target data and the fault analysis data to obtain fixed storage data.
4. The vehicle fault diagnosis system according to claim 3, wherein the data storage management unit is further configured to, if the instruction level is higher than the storage instruction level, acquire a target data type and a fault occurrence time according to the storage instruction, select target data from the cache data according to the target data type and the fault occurrence time, and perform fault analysis according to the target data to obtain fault analysis data.
5. The vehicle fault diagnosis system according to claim 4, wherein the data fixed storage unit is communicatively connected to the data cache module, and further configured to obtain and store new cache data corresponding to the target data type in the cache data after storing the fixed storage data.
6. The vehicle fault diagnosis system according to any one of claims 3 to 5, wherein the data storage processing module further includes:
the data storage label unit is in communication connection with the data storage management unit and is used for generating a storage label according to the storage instruction, and the storage label comprises the storage triggering instruction, the instruction level, the target data type and the fault occurrence time;
the data fixed storage unit is in communication connection with the data storage label unit and is used for receiving and storing the storage label and establishing association between the storage label and the stored fixed storage data.
7. The vehicle fault diagnostic system of claim 3, wherein the data storage management unit is further configured to continue executing a current storage command if the command level is not greater than the storage command level.
8. The vehicle fault diagnosis system according to claim 1, further comprising:
and the data transmission export management module is in communication connection with the data storage processing module and is used for acquiring a diagnosis instruction and acquiring diagnosis data from the fixed storage data according to the diagnosis instruction.
9. A vehicle fault diagnosis method characterized by comprising the steps of:
acquiring data information of a vehicle, and caching to obtain cached data;
receiving a storage trigger instruction, and selecting target data from the cache data according to the storage trigger instruction;
and carrying out fault analysis according to the target data to obtain fault analysis data, and storing the target data and the fault analysis data to obtain fixed storage data.
10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the vehicle fault diagnosis method according to claim 9.
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