CN113093710A - Bus data analysis method, device and equipment and automobile diagnosis system - Google Patents
Bus data analysis method, device and equipment and automobile diagnosis system Download PDFInfo
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Abstract
The embodiment of the invention relates to the technical field of automobile diagnosis, and discloses a bus data analysis method, which comprises the following steps: the method is applied to an automobile diagnosis system, the automobile diagnosis system is used for obtaining communication data on each automobile bus, and the automobile buses are used for communication among electronic control units of automobiles, and the method comprises the following steps: acquiring a query request of a user, wherein the query request carries target bus information; acquiring communication data of a target bus according to the target bus information; the target bus is any one or more buses in the automobile buses; analyzing the communication data to obtain an analysis result; generating display content according to the analysis result and a preset display mode; and displaying the display content to the user. Through the mode, the embodiment of the invention realizes the beneficial effect of effectively analyzing the communication quality.
Description
Technical Field
The embodiment of the invention relates to the technical field of automobile diagnosis, in particular to a bus data analysis method, a bus data analysis device, bus data analysis equipment, an automobile diagnosis system and a computer readable storage medium.
Background
With the increasing number of electronic control units in an automobile system and the increasing complexity of an automobile bus connecting the electronic control units, the communication quality of the automobile bus is very important to the stability and safety of system operation. Some intermittent faults are often caused by deterioration of communication quality of the automobile bus, and analysis of the communication quality and performance of the automobile bus has instructive significance for troubleshooting. However, the inventor finds that the conventional automobile diagnosis tools do not have the function of analyzing the bus communication quality and performance, and how to analyze the automobile bus performance through an automobile diagnosis system has important practical value for automobile diagnosis.
Disclosure of Invention
In view of the foregoing problems, embodiments of the present invention provide a bus data analysis method, which is used to solve the problem that the existing automobile diagnostic device in the prior art cannot analyze the performance of an automobile bus.
According to an aspect of an embodiment of the present invention, there is provided a bus data analysis method applied in an automobile diagnosis system for acquiring communication data on respective automobile buses used for communication between electronic control units of an automobile, the method including:
acquiring a query request of a user, wherein the query request carries target bus information;
acquiring communication data of a target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
analyzing the communication data to obtain an analysis result;
generating display content according to the analysis result and a preset display mode;
and displaying the display content to the user.
In an optional manner, the analyzing the communication data to obtain an analysis result includes: calculating differential data according to the communication data to obtain differential data; filtering the differential data to obtain filtered differential data; decoding the filtered differential data according to a preset decoding rule to obtain decoded data; decoding the decoded data according to a preset bus protocol to obtain decoded data; and analyzing according to the decoded data to obtain an analysis result.
In an optional mode, the target bus information is bus information of all automobile buses; the analysis results comprise analysis results corresponding to the automobile buses; the preset display mode is an automobile bus topological graph; the generating of the display content according to the analysis result and the preset display mode includes: adding the analysis result to an automobile bus topological graph to obtain display content; nodes in the automobile bus topological graph represent all electronic control units of an automobile, and edges in the automobile bus topological graph represent automobile buses among all the electronic control units.
In an optional mode, the analysis result comprises the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit, and the current state of the electronic control units, wherein the current state comprises a normal state or a fault state; the current state is determined according to the communication volume of the electronic control unit and/or the communication load rate of the electronic control unit; adding the analysis result to an automobile bus topological graph to obtain display content, wherein the display content comprises the following steps: and marking the communication volume of each electronic control unit and/or the communication load rate and the current state of each electronic control unit in the automobile bus topological graph to obtain display content.
In an optional manner, before the obtaining of the query request of the user, where the query request carries target bus information, the method further includes: acquiring automobile bus information among all electronic control units; and determining the automobile bus topological graph according to the electronic control units and the automobile bus information.
In an alternative mode, the target bus information is bus information of a single automobile bus; the analysis result is the analysis result of a single automobile bus; the preset display mode is a single automobile bus display mode; the generating of the display content according to the analysis result and the preset display mode includes:
and generating display content according to the single automobile bus display mode and the analysis result of the single automobile bus.
In an alternative mode, the analysis result includes at least one or more of a total amount of bus communication messages, a total amount of messages of error frames, an average message amount, a peak message amount, a bus load rate, a message load of error frames, a communication amount of the electronic control unit, a communication load rate of the electronic control unit, error frame context data, and an average rate of error frames; the single vehicle bus display mode comprises one or more of a list, a bar graph, a wave graph, a progress bar, a sector graph and a message tree.
In an optional mode, the automobile diagnosis system comprises a diagnosis device upper computer and a connection device, wherein the diagnosis device upper computer obtains communication data on an automobile bus through the connection device; the electronic control unit comprises an automobile control unit and a vehicle-mounted automatic diagnosis device OBD; before the query request of the user is obtained and carries the target bus information, the method further includes: the connecting equipment is connected to the automobile bus of each automobile control unit through a probe; the connecting device is connected with the vehicle-mounted automatic diagnosis device OBD.
In an optional mode, the connection device comprises an automobile communication interface and an oscilloscope; the oscilloscopes are connected to the automobile buses of the automobile control units; and the oscilloscope is connected with the vehicle-mounted automatic diagnostic equipment OBD through the automobile communication interface.
According to another aspect of the embodiments of the present invention, there is provided a bus data analysis apparatus applied in an automobile diagnosis system for acquiring communication data on respective automobile buses used for communication between electronic control units of automobiles, the apparatus including:
the request module is used for acquiring a query request of a user, wherein the query request carries target bus information;
the acquisition module is used for acquiring communication data of the target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
the analysis module is used for analyzing the communication data to obtain an analysis result;
the generating module is used for generating display content according to the analysis result and a preset display mode;
and the display module is used for displaying the display content to the user.
According to another aspect of the embodiments of the present invention, there is provided a bus data analysis device including: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus; the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation of the bus data analysis method.
According to another aspect of the embodiments of the present invention, there is provided an automobile diagnostic system, including the above-mentioned bus data analysis device or the above-mentioned bus data analysis apparatus.
According to a further aspect of the embodiments of the present invention, there is provided a computer-readable storage medium having at least one executable instruction stored therein, which when run on a bus data analysis device, causes the bus data analysis device to perform the operations of the bus data analysis method as described above.
According to the embodiment of the invention, the communication data on the automobile bus is acquired, the communication data is analyzed, the analysis result is displayed to the user according to the preset display mode, the information such as the communication load, the communication quality, the communication frequency between each ECU and the like of the automobile diagnosis bus and the automobile internal bus can be intercepted, the intercepted data is recorded, and the efficiency of the user in fault analysis is effectively improved.
The foregoing description is only an overview of the technical solutions of the embodiments of the present invention, and the embodiments of the present invention can be implemented according to the content of the description in order to make the technical means of the embodiments of the present invention more clearly understood, and the detailed description of the present invention is provided below in order to make the foregoing and other objects, features, and advantages of the embodiments of the present invention more clearly understandable.
Drawings
The drawings are only for purposes of illustrating embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic diagram of an automotive diagnostic system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a bus data analysis method according to an embodiment of the present invention;
FIG. 3 illustrates a schematic diagram of display content provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating display content provided by another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a bus data analysis device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a bus data analysis device according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein.
First, the related art terms appearing in the embodiments of the present invention are explained:
an ECU: a vehicle control unit;
CAN/K-Line/PWM/LIN/FlexRay: a bus communication protocol;
VCMI: a connecting device integrating an oscilloscope and an automobile communication interface;
and (3) OBD: On-Board Diagnostics, acronym, "On-Board automatic diagnostic device".
Referring to fig. 1, fig. 1 is a schematic structural diagram of an automobile diagnostic system according to an embodiment of the present invention. The automobile diagnosis system 10 comprises a diagnosis device upper computer 101 and a connection device 102, wherein the diagnosis device upper computer 101 obtains communication data on an automobile bus through the connection device 102. The automobile bus refers to a bus used for communication connection among all electronic control units in an automobile, and comprises an automobile internal bus connected with the automobile control units and a diagnosis bus connected with an on-board automatic diagnosis device (OBD) 202; the electronic control unit includes each ECU201 and OBD202 in the automobile; the vehicle control unit 201 and the vehicle-mounted automatic diagnosis device 202 are connected to the gateway through a bus, and then communicate with the vehicle-mounted automatic diagnosis device 202. The connection device 102 is connected to the vehicle bus of each of the vehicle control units (only one vehicle control unit 201 is shown in the figure) through a probe; the connection device 102 is also connected to an on-board automatic diagnostic device (OBD) 202. The connection equipment is VCMI, the VCMI comprises an oscilloscope used for measuring signals, an automobile communication interface VCI used for communicating with an automobile, a multimeter used for measuring signals and a signal generator used for outputting a certain waveform signal, the oscilloscope is connected with the automobile bus connected with the automobile control unit 201 through a probe so as to obtain communication data of the automobile bus, and the oscilloscope is also connected with an interface of the OBD through the automobile communication interface so as to obtain data on a diagnosis bus of the vehicle-mounted automatic diagnosis equipment 202. The automobile diagnosis system 10 may acquire the communication data on the automobile bus according to a user request, or may automatically acquire the communication data on the automobile bus periodically or in real time, analyze the communication data on the automobile bus after acquiring the data on the automobile bus to obtain an analysis result, and generate a display result in a preset mode to display the analysis result to the user. The oscilloscope of the automobile diagnosis system 10 may acquire communication data of the automobile bus and send the communication data to the diagnosis device upper computer 101, the diagnosis device upper computer 101 analyzes the communication data to obtain an analysis result, or the oscilloscope of the connection device 101 performs analysis processing through an FPGA module in the oscilloscope after receiving the communication data to obtain an analysis result.
Fig. 2 is a flowchart illustrating a bus data analysis method according to an embodiment of the present invention, which is executed by a bus data analysis device. The bus data analysis device may be a computer device, a distributed device, a cloud service device, a terminal, and the like, and specifically, may be the above-mentioned automobile diagnosis section system. As shown in fig. 2, the method comprises the steps of:
step 110: acquiring a query request of a user, wherein the query request carries target bus information.
The target bus information includes a target bus identifier, such as a name of the target bus, which may include names of multiple target buses, or may be a single target bus. The query request further includes a statistical time window, which is a statistical time of the communication data, such as a statistical time of a recent period of time on the target bus, or a statistical time of the communication data within a certain historical period of time, or a time from the starting point to the measuring point. For example, for a CAN bus, the target bus identification includes CAN _ H, CAN _ L, etc.
In the embodiment of the present invention, as shown in fig. 4, a schematic diagram of display content provided by the embodiment of the present invention is shown. The user can generate a query request through a message statistical interface, wherein the message statistical interface comprises a preset automobile bus topological graph, nodes in the automobile bus topological graph represent all electronic control units of an automobile, and edges in the automobile bus topological graph represent automobile buses among all the electronic control units. The message statistics interface may also include a bus selection box. The query request may be generated by a user selecting a certain edge on the message statistics interface, or may be generated by a user inputting a certain target bus identifier in a bus selection box in the message statistics interface.
Step 120: acquiring communication data of a target bus according to the target bus information; the target bus is any one or more buses in the automobile bus.
The target bus information may be bus information of all automobile buses, or may be bus information of a single automobile bus.
In the embodiment of the invention, after the communication data on the target bus is acquired by the oscilloscope in the VCMI, the acquired data is stored in the data cache. The oscilloscope performs voltage sampling on the target bus to obtain communication data on the target bus, and the voltage sampling can be performed through an ADC (analog to digital converter) configured in the VCMI.
Step 130: and analyzing the communication data to obtain an analysis result.
In the embodiment of the invention, after the communication data are obtained, the operations of differential calculation, filtering, decoding and the like are required to be carried out on the communication data, and then the communication data on the target bus are analyzed through an analysis algorithmThe situation is. The method specifically comprises the following steps: and acquiring communication data from the data cache, wherein the communication data is bus voltage data of the target bus. Calculating differential data according to the communication data to obtain differential data; filtering the differential data to obtain filtered differential data; decoding the filtered differential data according to a preset decoding rule to obtain decoded data; decoding the decoded data according to a preset bus protocol to obtain decoded data; and analyzing according to the decoded data to obtain an analysis result. Wherein for the difference data calculation: when the target bus is a two-wire bus, the voltage data of the target bus includes high voltage data and low voltage data, e.g., for CAN _ H (high speed CAN bus) and CAN _ L (low speed CAN bus), the voltage data of CAN _ H is VCAN_HVoltage data of CAN _ L is VCAN_LDifferential data of VCAN_HMinus VCAN_L(ii) a For a single-wire bus, the differential data is the signal difference between the voltage data of the single-wire bus and ground. In order to eliminate the interference influence, the filtering process is required to be performed on the interference signal before decoding, the filtering process can be set correspondingly according to the characteristics of the differential voltage waveform, and the filtering process is as follows: the method has the advantages that the interference points are found in a statistical analysis mode, data replacement is carried out on interference electricity, values of adjacent boundaries are used for replacement, the interference electricity can be effectively filtered through the mode, and subsequent decoding threshold value setting is more reasonable. The decoding process comprises the following steps: the decoding is mainly to convert the communication data into binary logic data such as 01 and the like according to the baud rate and the sampling rate of the target bus; the setting is made according to the decoding threshold. The decode threshold may be a voltage threshold. If the voltage is larger than a certain voltage threshold value, the voltage is 1, otherwise the voltage is 0, and how many sampling points correspond to one logic point is determined by parameters set by the oscilloscope. Specifically, the level threshold is set according to the characteristics of the target bus for decoding, for example, CAN _ H CAN set the level threshold to be 1.5V, when V isCAN_H>When the voltage is 1.5V, the code is 1; when the decoding is 0 when the decoding is less than 1V, the decoding can be carried out according to the parameters. And (3) decoding process: decoding requires converting the decoded output binary logic data such as logic 01 into a number having a data format according to a communication protocolAccording to the frame. And after decoding is finished, decoding according to the bus protocol of the target bus, wherein the VCI of the VCMI comprises a plurality of bus protocols, and decoding the decoded data according to the bus protocol to obtain the decoded data. The decoded data is stored as a Log file (Log file), which may be in a format such as xls, txt, binary data, and the like.
After decoding, whether the decoded data has an abnormal data frame or not can be judged according to the bus protocol of the target bus, and if so, the partial data is determined to be an error frame. And reserving the data sections before and after the error frame to obtain the context data of the error frame. And storing the error frame context data in a Log file for subsequent analysis. Different bus protocols define the corresponding exception conditions to define. The bus protocol may be consulted to determine an anomalous error frame.
The analysis algorithm can be deployed on an upper computer of the diagnostic equipment and can also be deployed in the VCMI. If the bus waveform is deployed on the diagnostic equipment upper computer, the oscilloscope of the VCMI acquires the bus waveform and then transmits waveform data (bus voltage data) to the diagnostic equipment upper computer, the communication speed of the waveform, the sampling rate of the oscilloscope, the characteristics of the bus and the like are known in advance by the diagnostic equipment upper computer, the sampling rate of the oscilloscope is set by the diagnostic equipment upper computer, and the measured bus type and the communication speed are stored in advance by the diagnostic equipment upper computer. If the analysis algorithm is deployed in the VCMI, the analysis algorithm is set in an FPGA of the oscilloscope, so that the operation is faster, wherein the bus speed, the decoding threshold value and the bus protocol of the oscilloscope are preset by an upper computer of the diagnostic equipment.
In an embodiment of the present invention, the analysis result may include several communication data analysis dimensions as shown in table 1 below. And analyzing to obtain an analysis result, wherein each communication data analysis dimension is provided with a corresponding threshold, and comparing the analysis result with the threshold so as to determine whether the corresponding internal bus fault or the OBD fault or the ECU fault.
| S/N | Communication data analysis dimension | Unit of | |
| 1 | Aggregate of | Frame | |
| 2 | Message amount of | Frame | |
| 3 | Averaging messages | Frames/second | |
| 4 | Peak message | Frames/second | |
| 5 | Bus load | ％ | |
| 6 | Message load of error frame | ％ | |
| 7 | Communication amount of each ECU | Frame | |
| 8 | Communication load of ECU | ％ | |
| 9 | |
||
| 10 | Average rate of erroneous frames | Frames/second |
Table 1: communication data analysis dimension
In the embodiment of the invention, when the target bus information is the bus information of all the automobile buses, the states of all the automobile buses and the electronic control unit are analyzed. The analysis result comprises the communication traffic of each electronic control unit and/or the communication load rate of each electronic control unit and the current state of the electronic control units, and the current state comprises a normal state or a fault state; the current state is determined based on the traffic of the electronic control unit and/or the traffic load rate of the electronic control unit. Specifically, communication data on each target bus in a target time period are collected according to an automobile bus topological graph, and the difference calculation, filtering, decoding and decoding are carried out to obtain an analysis result. The target time period is determined according to a query request of a user.
The preset display mode is a single automobile bus display mode, namely, a user wants to analyze a single target bus. The single bus analysis result comprises at least one or more of the total amount of bus communication messages, the total amount of error frame messages, the average message amount, the peak message amount, the bus load rate, the message load of error frames, the communication traffic of the electronic control unit, the communication load rate of the electronic control unit, error frame context data and the average rate of error frames. Specifically, communication data on the target bus in the target time period is collected according to the target bus identification, and the difference calculation, filtering, decoding and decoding are carried out to obtain an analysis result. The target time period is determined according to a query request of a user.
Step 140: and generating display content according to the analysis result and a preset display mode.
As shown in fig. 3, the single car bus display mode includes one or more of a list, a bar graph, a wave graph, a progress bar, a sector graph, and a message tree. And generating display content according to the single automobile bus display mode and the analysis result of the single automobile bus. In the embodiment of the present invention, different display modes may be adopted for different communication data analysis dimensions, and as shown in table 2 below, preferred display modes corresponding to several communication data analysis dimensions are provided.
Table 2: better display mode corresponding to communication data analysis dimension
As shown in fig. 4, in the embodiment of the present invention, when the target bus information is bus information of all the vehicle buses, that is, states of all the vehicle buses and the electronic control units are to be analyzed. Specifically, the adding the analysis result to the car bus topological graph to obtain a display content includes: and marking the communication volume of each electronic control unit and/or the communication load rate and the current state of each electronic control unit in the automobile bus topological graph to obtain display content. For example, the communication load factor includes the occupancy of the ECU, and the ECU is updated in the bus topology map of the vehicle, and if the occupancy is too high, it indicates that the ECU has a failure.
Step 150: and displaying the display content to the user.
In the implementation of the invention, after the user acquires the display content, corresponding subsequent analysis can be carried out according to the display content, the Log file and the like.
According to the embodiment of the invention, the communication data on the automobile bus is acquired, the communication data is analyzed, the analysis result is displayed to the user according to the preset display mode, the information such as the communication load, the communication quality, the communication frequency between each ECU and the like of the automobile diagnosis bus and the automobile internal bus can be intercepted, the intercepted data is recorded, and the efficiency of the user in fault analysis is effectively improved.
Fig. 5 is a schematic structural diagram of a bus data analysis device according to an embodiment of the present invention, which is applied to an automobile diagnostic system for acquiring communication data on each automobile bus used for communication between electronic control units of automobiles. As shown in fig. 5, the apparatus 200 includes: a request module 210, an acquisition module 220, an analysis module 230, a generation module 240, and a display module 250.
A request module 210, configured to obtain a query request of a user, where the query request carries target bus information;
the acquisition module 220 is used for acquiring communication data of the target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
an analysis module 230, configured to analyze the communication data to obtain an analysis result;
a generating module 240, configured to generate display content according to the analysis result and a preset display mode;
a display module 250, configured to display the display content to the user.
In an optional manner, the analyzing the communication data to obtain an analysis result includes: calculating differential data according to the communication data to obtain differential data; filtering the differential data to obtain filtered differential data; decoding the filtered differential data according to a preset decoding rule to obtain decoded data; decoding the decoded data according to a preset bus protocol to obtain decoded data; and analyzing according to the decoded data to obtain an analysis result.
In an optional mode, the target bus information is bus information of all automobile buses; the analysis results comprise analysis results corresponding to the automobile buses; the preset display mode is an automobile bus topological graph; the generating of the display content according to the analysis result and the preset display mode includes: adding the analysis result to an automobile bus topological graph to obtain display content; nodes in the automobile bus topological graph represent all electronic control units of an automobile, and edges in the automobile bus topological graph represent automobile buses among all the electronic control units.
In an optional mode, the analysis result comprises the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit, and the current state of the electronic control units, wherein the current state comprises a normal state or a fault state; the current state is determined according to the communication volume of the electronic control unit and/or the communication load rate of the electronic control unit; adding the analysis result to an automobile bus topological graph to obtain display content, wherein the display content comprises the following steps: and marking the communication volume of each electronic control unit and/or the communication load rate and the current state of each electronic control unit in the automobile bus topological graph to obtain display content.
In an optional manner, before the obtaining of the query request of the user, where the query request carries target bus information, the method further includes: acquiring automobile bus information among all electronic control units; and determining the automobile bus topological graph according to the electronic control units and the automobile bus information.
In an alternative mode, the target bus information is bus information of a single automobile bus; the analysis result is the analysis result of a single automobile bus; the preset display mode is a single automobile bus display mode; the generating of the display content according to the analysis result and the preset display mode includes:
and generating display content according to the single automobile bus display mode and the analysis result of the single automobile bus.
In an alternative mode, the analysis result includes at least one or more of a total amount of bus communication messages, a total amount of messages of error frames, an average message amount, a peak message amount, a bus load rate, a message load of error frames, a communication amount of the electronic control unit, a communication load rate of the electronic control unit, error frame context data, and an average rate of error frames; the single vehicle bus display mode comprises one or more of a list, a bar graph, a wave graph, a progress bar, a sector graph and a message tree.
In an optional mode, the automobile diagnosis system comprises a diagnosis device upper computer and a connection device, wherein the diagnosis device upper computer obtains communication data on an automobile bus through the connection device; the electronic control unit comprises an automobile control unit and a vehicle-mounted automatic diagnosis device OBD; before the query request of the user is obtained and carries the target bus information, the method further includes: the connecting equipment is connected to the automobile bus of each automobile control unit through a probe; the connecting device is connected with the vehicle-mounted automatic diagnosis device OBD.
In an optional mode, the connection device comprises an automobile communication interface and an oscilloscope; the oscilloscopes are connected to the automobile buses of the automobile control units; and the oscilloscope is connected with the vehicle-mounted automatic diagnostic equipment OBD through the automobile communication interface. According to the embodiment of the invention, the communication data on the automobile bus is acquired, the communication data is analyzed, the analysis result is displayed to the user according to the preset display mode, the information such as the communication load, the communication quality, the communication frequency between each ECU and the like of the automobile diagnosis bus and the automobile internal bus can be intercepted, the intercepted data is recorded, and the efficiency of the user in fault analysis is effectively improved.
Fig. 6 is a schematic structural diagram of a bus data analysis device according to an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the bus data analysis device.
As shown in fig. 6, the bus data analysis apparatus may include: a processor (processor)302, a communication Interface 304, a memory 306, and a communication bus 308.
Wherein: the processor 302, communication interface 304, and memory 306 communicate with each other via a communication bus 308. A communication interface 304 for communicating with network elements of other devices, such as clients or other servers. The processor 302 is configured to execute the program 310, and may specifically execute the relevant steps in the above embodiments of the method for bus data analysis device.
In particular, program 310 may include program code comprising computer-executable instructions.
The processor 302 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement an embodiment of the present invention. The bus data analysis device comprises one or more processors which can be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.
And a memory 306 for storing a program 310. Memory 306 may comprise high-speed RAM memory and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
Specifically, the program 310 may be invoked by the processor 302 to cause the bus data analysis device to perform the following operations:
acquiring a query request of a user, wherein the query request carries target bus information;
acquiring communication data of a target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
analyzing the communication data to obtain an analysis result;
generating display content according to the analysis result and a preset display mode;
and displaying the display content to the user.
In an optional manner, the analyzing the communication data to obtain an analysis result includes: calculating differential data according to the communication data to obtain differential data; filtering the differential data to obtain filtered differential data; decoding the filtered differential data according to a preset decoding rule to obtain decoded data; decoding the decoded data according to a preset bus protocol to obtain decoded data; and analyzing according to the decoded data to obtain an analysis result.
In an optional mode, the target bus information is bus information of all automobile buses; the analysis results comprise analysis results corresponding to the automobile buses; the preset display mode is an automobile bus topological graph; the generating of the display content according to the analysis result and the preset display mode includes: adding the analysis result to an automobile bus topological graph to obtain display content; nodes in the automobile bus topological graph represent all electronic control units of an automobile, and edges in the automobile bus topological graph represent automobile buses among all the electronic control units.
In an optional mode, the analysis result comprises the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit, and the current state of the electronic control units, wherein the current state comprises a normal state or a fault state; the current state is determined according to the communication volume of the electronic control unit and/or the communication load rate of the electronic control unit; adding the analysis result to an automobile bus topological graph to obtain display content, wherein the display content comprises the following steps: and marking the communication volume of each electronic control unit and/or the communication load rate and the current state of each electronic control unit in the automobile bus topological graph to obtain display content.
In an optional manner, before the obtaining of the query request of the user, where the query request carries target bus information, the method further includes: acquiring automobile bus information among all electronic control units; and determining the automobile bus topological graph according to the electronic control units and the automobile bus information.
In an alternative mode, the target bus information is bus information of a single automobile bus; the analysis result is the analysis result of a single automobile bus; the preset display mode is a single automobile bus display mode; the generating of the display content according to the analysis result and the preset display mode includes:
and generating display content according to the single automobile bus display mode and the analysis result of the single automobile bus.
In an alternative mode, the analysis result includes at least one or more of a total amount of bus communication messages, a total amount of messages of error frames, an average message amount, a peak message amount, a bus load rate, a message load of error frames, a communication amount of the electronic control unit, a communication load rate of the electronic control unit, error frame context data, and an average rate of error frames; the single vehicle bus display mode comprises one or more of a list, a bar graph, a wave graph, a progress bar, a sector graph and a message tree.
In an optional mode, the automobile diagnosis system comprises a diagnosis device upper computer and a connection device, wherein the diagnosis device upper computer obtains communication data on an automobile bus through the connection device; the electronic control unit comprises an automobile control unit and a vehicle-mounted automatic diagnosis device OBD; before the query request of the user is obtained and carries the target bus information, the method further includes: the connecting equipment is connected to the automobile bus of each automobile control unit through a probe; the connecting device is connected with the vehicle-mounted automatic diagnosis device OBD.
In an optional mode, the connection device comprises an automobile communication interface and an oscilloscope; the oscilloscopes are connected to the automobile buses of the automobile control units; and the oscilloscope is connected with the vehicle-mounted automatic diagnostic equipment OBD through the automobile communication interface. According to the embodiment of the invention, the communication data on the automobile bus is acquired, the communication data is analyzed, the analysis result is displayed to the user according to the preset display mode, the information such as the communication load, the communication quality, the communication frequency between each ECU and the like of the automobile diagnosis bus and the automobile internal bus can be intercepted, the intercepted data is recorded, and the efficiency of the user in fault analysis is effectively improved.
An embodiment of the present invention provides a computer-readable storage medium, where the storage medium stores at least one executable instruction, and when the executable instruction is executed on a bus data analysis device, the bus data analysis device is enabled to execute a bus data analysis method in any method embodiment described above.
The executable instructions may be specifically configured to cause the bus data analysis device to perform the following operations:
acquiring a query request of a user, wherein the query request carries target bus information;
acquiring communication data of a target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
analyzing the communication data to obtain an analysis result;
generating display content according to the analysis result and a preset display mode;
and displaying the display content to the user.
In an optional manner, the analyzing the communication data to obtain an analysis result includes: calculating differential data according to the communication data to obtain differential data; filtering the differential data to obtain filtered differential data; decoding the filtered differential data according to a preset decoding rule to obtain decoded data; decoding the decoded data according to a preset bus protocol to obtain decoded data; and analyzing according to the decoded data to obtain an analysis result.
In an optional mode, the target bus information is bus information of all automobile buses; the analysis results comprise analysis results corresponding to the automobile buses; the preset display mode is an automobile bus topological graph; the generating of the display content according to the analysis result and the preset display mode includes: adding the analysis result to an automobile bus topological graph to obtain display content; nodes in the automobile bus topological graph represent all electronic control units of an automobile, and edges in the automobile bus topological graph represent automobile buses among all the electronic control units.
In an optional mode, the analysis result comprises the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit, and the current state of the electronic control units, wherein the current state comprises a normal state or a fault state; the current state is determined according to the communication volume of the electronic control unit and/or the communication load rate of the electronic control unit; adding the analysis result to an automobile bus topological graph to obtain display content, wherein the display content comprises the following steps: and marking the communication volume of each electronic control unit and/or the communication load rate and the current state of each electronic control unit in the automobile bus topological graph to obtain display content.
In an optional manner, before the obtaining of the query request of the user, where the query request carries target bus information, the method further includes: acquiring automobile bus information among all electronic control units; and determining the automobile bus topological graph according to the electronic control units and the automobile bus information.
In an alternative mode, the target bus information is bus information of a single automobile bus; the analysis result is the analysis result of a single automobile bus; the preset display mode is a single automobile bus display mode; the generating of the display content according to the analysis result and the preset display mode includes:
and generating display content according to the single automobile bus display mode and the analysis result of the single automobile bus.
In an alternative mode, the analysis result includes at least one or more of a total amount of bus communication messages, a total amount of messages of error frames, an average message amount, a peak message amount, a bus load rate, a message load of error frames, a communication amount of the electronic control unit, a communication load rate of the electronic control unit, error frame context data, and an average rate of error frames; the single vehicle bus display mode comprises one or more of a list, a bar graph, a wave graph, a progress bar, a sector graph and a message tree.
In an optional mode, the automobile diagnosis system comprises a diagnosis device upper computer and a connection device, wherein the diagnosis device upper computer obtains communication data on an automobile bus through the connection device; the electronic control unit comprises an automobile control unit and a vehicle-mounted automatic diagnosis device OBD; before the query request of the user is obtained and carries the target bus information, the method further includes: the connecting equipment is connected to the automobile bus of each automobile control unit through a probe; the connecting device is connected with the vehicle-mounted automatic diagnosis device OBD.
In an optional mode, the connection device comprises an automobile communication interface and an oscilloscope; the oscilloscopes are connected to the automobile buses of the automobile control units; and the oscilloscope is connected with the vehicle-mounted automatic diagnostic equipment OBD through the automobile communication interface. According to the embodiment of the invention, the communication data on the automobile bus is acquired, the communication data is analyzed, the analysis result is displayed to the user according to the preset display mode, the information such as the communication load, the communication quality, the communication frequency between each ECU and the like of the automobile diagnosis bus and the automobile internal bus can be intercepted, the intercepted data is recorded, and the efficiency of the user in fault analysis is effectively improved.
The embodiment of the invention also provides an automobile diagnosis system which comprises the bus data analysis device or the bus data analysis equipment.
The embodiment of the invention provides a bus data analysis device, which is used for executing the bus data analysis method.
Embodiments of the present invention provide a computer program that can be invoked by a processor to cause a bus data analysis device to perform a bus data analysis method in any of the above-described method embodiments.
Embodiments of the present invention provide a computer program product comprising a computer program stored on a computer-readable storage medium, the computer program comprising program instructions which, when run on a computer, cause the computer to perform the bus data analysis method of any of the above-described method embodiments.
The algorithms or displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. In addition, embodiments of the present invention are not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names. The steps in the above embodiments should not be construed as limiting the order of execution unless specified otherwise.
Claims (13)
1. A bus data analysis method applied to an automobile diagnosis system for acquiring communication data on respective automobile buses used for communication between electronic control units of automobiles, the method comprising:
acquiring a query request of a user, wherein the query request carries target bus information;
acquiring communication data of a target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
analyzing the communication data to obtain an analysis result;
generating display content according to the analysis result and a preset display mode;
and displaying the display content to the user.
2. The method of claim 1, wherein analyzing the communication data to obtain an analysis result comprises:
calculating differential data according to the communication data to obtain differential data;
filtering the differential data to obtain filtered differential data;
decoding the filtered differential data according to a preset decoding rule to obtain decoded data;
decoding the decoded data according to a preset bus protocol to obtain decoded data;
and analyzing according to the decoded data to obtain an analysis result.
3. The method of claim 1, wherein the target bus information is bus information of all vehicle buses; the analysis results comprise analysis results corresponding to the automobile buses; the preset display mode is an automobile bus topological graph;
the generating of the display content according to the analysis result and the preset display mode includes:
adding the analysis result to an automobile bus topological graph to obtain display content; nodes in the automobile bus topological graph represent all electronic control units of an automobile, and edges in the automobile bus topological graph represent automobile buses among all the electronic control units.
4. The method according to claim 3, wherein the analysis result comprises the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit, and the current state of the electronic control unit, wherein the current state comprises a normal state or a fault state; the current state is determined according to the communication volume of the electronic control unit and/or the communication load rate of the electronic control unit;
adding the analysis result to an automobile bus topological graph to obtain display content, wherein the display content comprises the following steps:
and marking the communication volume of each electronic control unit and/or the communication load rate and the current state of each electronic control unit in the automobile bus topological graph to obtain display content.
5. The method of claim 3, wherein before the obtaining of the query request of the user, where the query request carries the target bus information, the method further comprises:
acquiring automobile bus information among all electronic control units;
and determining the automobile bus topological graph according to the electronic control units and the automobile bus information.
6. The method of claim 1, wherein the target bus information is bus information of a single car bus; the analysis result is the analysis result of a single automobile bus; the preset display mode is a single automobile bus display mode;
the generating of the display content according to the analysis result and the preset display mode includes:
and generating display content according to the single automobile bus display mode and the analysis result of the single automobile bus.
7. The method of claim 6, wherein the analysis result comprises at least one or more of a total amount of bus communication messages, a total amount of messages of error frames, an average amount of messages, a peak amount of messages, a bus load rate, a message load of error frames, a traffic of electronic control units, a communication load rate of electronic control units, error frame context data, an average rate of error frames; the single vehicle bus display mode comprises one or more of a list, a bar graph, a wave graph, a progress bar, a sector graph and a message tree.
8. The method according to claim 1, wherein the automobile diagnosis system comprises a diagnosis device upper computer and a connection device, and the diagnosis device upper computer acquires communication data on an automobile bus through the connection device; the electronic control unit comprises an automobile control unit and a vehicle-mounted automatic diagnosis device OBD;
before the query request of the user is obtained and carries the target bus information, the method further includes:
the connecting equipment is connected to the automobile bus of each automobile control unit through a probe;
the connecting device is connected with the on-board automatic diagnostic device (OBD).
9. The method of claim 8, wherein the connected devices comprise an automotive communication interface and an oscilloscope;
the oscilloscopes are connected to the automobile buses of the automobile control units;
and the oscilloscope is connected with an automobile standard interface OBD through the automobile communication interface.
10. A bus data analysis device applied to an automobile diagnosis system for acquiring communication data on respective automobile buses for communication between electronic control units of automobiles, the device comprising:
the request module is used for acquiring a query request of a user, wherein the query request carries target bus information;
the acquisition module is used for acquiring communication data of the target bus according to the target bus information; the target bus is any one or more buses in the automobile buses;
the analysis module is used for analyzing the communication data to obtain an analysis result;
the generating module is used for generating display content according to the analysis result and a preset display mode;
and the display module is used for displaying the display content to the user.
11. A bus data analysis device, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is configured to store at least one executable instruction that causes the processor to perform the operations of the bus data analysis method of any of claims 1-9.
12. An automotive diagnostic system, characterized by comprising the bus data analysis device according to claim 10 or the bus data analysis apparatus according to claim 11.
13. A computer-readable storage medium having stored therein at least one executable instruction that, when executed on a bus data analysis device, causes the bus data analysis device to perform the operations of the bus data analysis method of any one of claims 1-9.
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| CN202110385199.4A CN113093710B (en) | 2021-04-09 | 2021-04-09 | Bus data analysis method, device and equipment and automobile diagnosis system |
| PCT/CN2022/081419 WO2022213788A1 (en) | 2021-04-09 | 2022-03-17 | Bus data analysis method, apparatus, and device, and automobile diagnosis system |
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| WO2022213788A1 (en) * | 2021-04-09 | 2022-10-13 | 深圳市道通科技股份有限公司 | Bus data analysis method, apparatus, and device, and automobile diagnosis system |
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| CN113093710B (en) | 2022-07-19 |
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