WO2022213788A1 - Bus data analysis method, apparatus, and device, and automobile diagnosis system - Google Patents

Abstract

A bus data analysis method, 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 an automobile. The method comprises: obtaining a query request of a user, the query request carrying target bus information (110); collecting communication data of a target bus according to the target bus information, the target bus being any one or more of buses in automobile buses (120); analyzing the communication data to obtain an analysis result (130); generating display content according to the analysis result and a preset display mode (140); and displaying the display content to the user (150). The present invention achieves the effective analysis of the communication quality.

Description

Bus data analysis method, device, equipment and automobile diagnosis system

This application claims the priority of the Chinese patent application with the application number 202110385199.4 and the application name "Bus data analysis method, device, equipment and automotive diagnostic system" filed with the China Patent Office on April 9, 2021, the entire contents of which are by reference Incorporated in this application.

technical field

Embodiments of the present invention relate to the technical field of automobile diagnosis, and in particular, to a bus data analysis method, apparatus, device, automobile diagnosis system, and computer-readable storage medium.

Background technique

With more and more electronic control units in the automotive system, the automotive bus connecting the electronic control units becomes more and more complex. The communication quality of the automotive bus is very important to the stability and security of the system operation. Some intermittent faults are often caused by the deterioration of the communication quality of the automobile bus. The analysis of the communication quality and performance of the automobile bus has guiding significance for the troubleshooting of the fault. However, the inventor found that the existing vehicle diagnostic tools do not have the function of analyzing the quality and performance of the bus communication. How to analyze the performance of the vehicle bus through the vehicle diagnostic system has important practical value for the vehicle diagnosis.

SUMMARY OF THE INVENTION

In view of the above problems, the embodiments of the present invention provide a bus data analysis method, which is used to solve the problem that the existing automobile diagnostic equipment in the prior art cannot analyze the automobile bus performance.

According to an aspect of the embodiments of the present invention, a method for analyzing bus data is provided, which is applied to an automobile diagnostic system, where the automobile diagnostic system is used to acquire communication data on each automobile bus, and the automobile bus is used for electronic Communication between control units, the method comprising:

Obtain a user's query request, where the query request carries target bus information;

Collect the communication data of target bus according to described target bus information; Described target bus is any one or more buses in automobile bus;

Analyzing the communication data to obtain an analysis result;

generating display content according to the analysis result and a preset display mode;

The displayed content is presented to the user.

In an optional manner, the analyzing the communication data to obtain an analysis result includes: performing differential data calculation according to the communication data to obtain differential data; filtering the differential data to obtain filtered data decode the filtered differential data according to the preset decoding rules to obtain the decoded data; decode the decoded data according to the preset bus protocol to obtain the decoded data; according to the decoded data Perform the analysis and get the analysis result.

In an optional manner, the target bus information is bus information of all automobile buses; the analysis results include analysis results corresponding to each of the automobile buses; the preset display mode is an automobile bus topology diagram; The generating the display content according to the analysis result and the preset display mode includes: adding the analysis result to the vehicle bus topology map to obtain the display content; the nodes in the vehicle bus topology map represent various electronic components of the vehicle. A control unit, the edges in the vehicle bus topology diagram represent the vehicle bus between each of the electronic control units.

In an optional manner, the analysis result includes 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, where the current state includes 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; The said analysis result is added to the vehicle bus topology map to obtain the display content, including: The communication volume of the control unit and/or the communication load rate of each electronic control unit and the current state are marked in the vehicle bus topology diagram, and the displayed content is obtained.

In an optional manner, before obtaining the query request of the user, before the query request carries the target bus information, the method further includes: obtaining the vehicle bus information between each electronic control unit; The electronic control unit and the vehicle bus information determine the vehicle bus topology map.

In an optional manner, the target bus information is the bus information of a single vehicle bus; the analysis result is the analysis result of a single vehicle bus; the preset display mode is a single vehicle bus display mode; the The display content is generated according to the analysis result and the preset display mode, including:

Display content is generated according to the single vehicle bus display mode and the analysis result of the single vehicle bus.

In an optional manner, the analysis results include the total amount of bus communication messages, the total amount of messages in error frames, the average message amount, the peak message amount, the bus load rate, the message load in error frames, and the communication of the electronic control unit. At least one or more of the amount of data, the communication load rate of the electronic control unit, the error frame context data, and the average rate of error frames; the single-car bus display mode includes list, bar graph, waveform graph, progress bar, sector Graph and one or more of the message tree species.

In an optional manner, the vehicle diagnostic system includes a diagnostic device host computer and a connecting device, and the diagnostic device host computer obtains the communication data on the automobile bus through the connecting device; the electronic control unit includes an automobile control unit and a connecting device. The vehicle-mounted automatic diagnosis device OBD; before obtaining the query request from the user, before the query request carries the target bus information, the method further includes: connecting the connecting device to the vehicle bus of each of the vehicle control units through a probe ; The connection device is connected with the vehicle-mounted automatic diagnosis device OBD.

In an optional manner, the connection device includes a car communication interface and an oscilloscope; the oscilloscope is connected to the car bus of each of the car control units; the oscilloscope communicates with the on-board automatic diagnosis device OBD through the car communication interface connect.

According to another aspect of the embodiments of the present invention, a bus data analysis device is provided, which is applied in an automobile diagnostic system, where the automobile diagnostic system is used to acquire communication data on each automobile bus, and the automobile bus is used for Communication between electronic control units, the device includes:

a request module, configured to obtain a user's query request, where the query request carries target bus information;

a collection module, used for collecting communication data of the target bus according to the target bus information; the target bus is any one or more buses in the vehicle bus;

an analysis module for analyzing the communication data to obtain an analysis result;

a generating module for generating display content according to the analysis result and a preset display mode;

The display module is used for displaying the display content to the user.

According to another aspect of the embodiments of the present invention, a bus data analysis device is provided, including: a processor, a memory, a communication interface, and a communication bus, the processor, the memory, and the communication interface passing through the communication bus Complete mutual communication; the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to perform the operations of the above-mentioned bus data analysis method.

According to another aspect of the embodiments of the present invention, an automobile diagnostic system is provided, including the above-mentioned bus data analysis device or the above-mentioned bus data analysis device.

According to yet another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, where at least one executable instruction is stored in the storage medium, and when the executable instruction is executed on the bus data analysis device, the bus data The analysis device performs the operations of the bus data analysis method as described above.

In the embodiment of the present invention, by acquiring the communication data on the car bus, analyzing the communication data, and displaying the analysis result to the user according to the preset display mode, the communication load, communication quality and The communication frequency and other information between each ECU, and the monitored data are recorded, which effectively improves the efficiency of the user's fault analysis.

The above description is only an overview of the technical solutions of the embodiments of the present invention. In order to understand the technical means of the embodiments of the present invention more clearly, it can be implemented according to the contents of the description, and in order to make the above and other purposes, features and The advantages can be more clearly understood, and the following specific embodiments of the present invention are given.

Description of drawings

The drawings are only used to illustrate the embodiments and are not considered to be limiting of the present invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:

FIG. 1 shows a schematic structural diagram of an automobile diagnostic system provided by an embodiment of the present invention;

2 shows a schematic flowchart of a method for analyzing bus data provided by an embodiment of the present invention;

FIG. 3 shows a schematic diagram of display content provided by an embodiment of the present invention;

FIG. 4 shows a schematic diagram of display content provided by another embodiment of the present invention;

5 shows a schematic structural diagram of a bus data analysis device provided by an embodiment of the present invention;

FIG. 6 shows a schematic structural diagram of a bus data analysis device provided by an embodiment of the present invention.

Detailed ways

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein.

First, the related technical terms that appear in the embodiments of the present invention are explained:

ECU: car control unit;

CAN/K-Line/PWM/LIN/FlexRay: bus communication protocol;

VCMI: a connecting device that integrates an oscilloscope and a car communication interface;

OBD: Abbreviation for On-Board Diagnostics, "on-board automatic diagnostic equipment".

Referring to FIG. 1 , FIG. 1 shows a schematic structural diagram of an automobile diagnostic system provided by an embodiment of the present invention. The vehicle diagnostic system 10 includes a diagnostic device host computer 101 and a connection device 102 , and the diagnostic device host computer 101 obtains communication data on the vehicle bus through the connection device 102 . The car bus refers to the bus used for communication connection between various electronic control units in the car, including the car internal bus connecting the car control unit and the diagnosis bus connecting the on-board automatic diagnosis device (OBD) 202; the electronic control unit includes the car Each ECU 201 and OBD 202 in the vehicle control unit 201 and the on-board automatic diagnosis device 202 are connected to the gateway through a bus, and then communicate with the on-board automatic diagnosis device 202 . The connecting device 102 is connected to the car bus of each of the car control units (only one car control unit 201 is shown in the figure) through probes; the connecting device 102 is also connected to an on-board automatic diagnostic device (OBD) 202 . The connecting device is a VCMI, which includes an oscilloscope for measuring signals, a vehicle communication interface VCI for communicating with cars, a multimeter for measuring signals, and a signal generator for outputting a certain waveform signal. The oscilloscope passes through the probe The oscilloscope is connected to the car bus connected to the car control unit 201 to obtain the communication data of the car bus. The oscilloscope is also connected to the OBD interface through the car communication interface to obtain the data on the diagnosis bus of the on-board automatic diagnosis device 202 . The car diagnostic system 10 can obtain the communication data on the car bus according to the user's request, and can also obtain it automatically on a regular basis or in real time. After obtaining the data on the car bus, analyze the communication data on the car bus to obtain the analysis result. , and use the preset mode to generate display results to display to the user. Among them, the oscilloscope of the automobile diagnosis system 10 can obtain the communication data of the automobile bus and send it to the upper computer 101 of the diagnosis equipment, and the upper computer 101 of the diagnosis equipment analyzes the communication data to obtain the analysis result, or the oscilloscope in the connection equipment 101 is receiving the data. After the communication data is received, the FPGA module in the oscilloscope is used for analysis and processing, and the analysis results are obtained.

FIG. 2 shows a flowchart of a method for analyzing bus data provided by an embodiment of the present invention, where the method is executed by a device for analyzing bus data. The bus data analysis device may be a computer device, a distributed device, a cloud service device, a terminal, etc., and specifically, may be the above-mentioned car diagnosis system. As shown in Figure 2, the method includes the following steps:

Step 110: Obtain a query request from the user, where the query request carries target bus information.

The target bus information includes a target bus identifier, such as the name of the target bus, which may include the names of multiple target buses, or may be a single target bus. The query request also includes a statistical time window, which is the statistical time of the communication data. For example, it can be the statistics on the target bus for a recent period of time, or the statistics of the communication data in a certain historical time period, or it can be from the start point to the The time of the measurement point. For example, for the CAN bus, the target bus identifier includes CAN_H, CAN_L and so on.

In the embodiment of the present invention, as shown in FIG. 4 , a schematic diagram of the display content provided by the embodiment of the present invention is shown. The user can generate a query request through the message statistics interface, the message statistics interface includes a preset automobile bus topology diagram, the nodes in the automobile bus topology diagram represent each electronic control unit of the automobile, and the edges in the automobile bus topology diagram Characterize the vehicle bus between each of the electronic control units. The message statistics interface may also include a bus selection box. The user may select an edge on the message statistics interface to generate the query request, or the user may input a target bus identifier in the bus selection box in the message statistics interface to generate the query request.

Step 120: Collect communication data of the target bus according to the target bus information; the target bus is any one or more buses in the automobile bus.

Wherein, the target bus information may be bus information of all vehicle buses, or may be bus information of a single vehicle bus.

In the embodiment of the present invention, after the communication data on the target bus is collected by the oscilloscope in the VCMI, the collected data is stored in the data buffer. Among them, the oscilloscope samples the voltage of the target bus to obtain the communication data on the target bus, and the voltage can be sampled through the ADC configured in the VCMI.

Step 130: Analyze the communication data to obtain an analysis result.

In the embodiment of the present invention, after the communication data is obtained, operations such as differential calculation, filtering, decoding, and decoding need to be performed on the communication data, and then the communication data on the target bus is analyzed by an analysis algorithm. It specifically includes the following steps: acquiring communication data from the data cache, where the communication data is bus voltage data of the target bus. Perform differential data calculation according to the communication data to obtain differential data; filter the differential data to obtain filtered differential data; decode the filtered differential data according to a preset decoding rule to obtain decoded data ; decode the decoded data according to a preset bus protocol to obtain decoded data; analyze according to the decoded data to obtain an analysis result. Among them, for differential 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, such as CAN_H (high-speed CAN bus) and CAN_L (low-speed CAN bus), the voltage of CAN_H The data is V _{CAN_H} , the voltage data of CAN_L is V _{CAN_L} , and the differential data is V _{CAN_H} minus V _{CAN_L} ; for a single-wire bus, the differential data is the signal difference between the voltage data of the single-wire bus and the ground. In order to eliminate the influence of interference, it is necessary to filter the interference signal before decoding. The filtering process can be set according to the characteristics of the differential voltage waveform. The filtering process is: using statistical analysis to find the interference point, The data is replaced by electricity, and the value is replaced by the value of the adjacent boundary. In this way, the interference electricity can be effectively filtered, so that the subsequent decoding threshold setting is more reasonable. The decoding process is as follows: the decoding mainly converts the communication data into binary logic data such as 0 1 according to the baud rate and sampling rate of the target bus; it is set according to the decoding threshold. The decode threshold may be a voltage threshold. If the voltage is greater than a certain voltage threshold, it is 1, otherwise it is 0. The number of sampling points corresponding to a logic point is determined by the parameters set by the oscilloscope. Specifically, set the level threshold for decoding according to the characteristics of the target bus. For example, CAN_H can set the level threshold to 1.5V. When V _{CAN_H} >1.5V, the decoding is 1; when it is less than 1V, the decoding is 0, according to These parameters can be decoded. Decoding process: Decoding needs to convert the binary logic data such as logic 01 output from the decoding into a data frame with a data format according to the communication protocol. After the decoding is completed, the decoding is performed according to the bus protocol of the target bus, wherein the VCI of the VCMI includes a plurality of bus protocols, and the decoded data is obtained by decoding the decoded data according to the bus protocol. The decoded decoded data is stored as a log file (log file), and the log file may be a file in formats such as xls, txt, and binary data.

Wherein, after decoding, it can be determined whether there is an abnormal data frame in the decoded data according to the bus protocol of the target bus, and if there is, the part of the data is determined as an error frame. The data segments before and after the error frame are reserved to obtain the error frame context data. The error frame context data is stored in the Log file for subsequent analysis. Different bus protocols define corresponding exceptions to be defined. The bus protocol can be consulted to identify abnormal error frames.

Among them, the analysis algorithm can be deployed on the upper computer of the diagnostic equipment or in the VCMI. If it is deployed on the upper computer of the diagnostic equipment, after the oscilloscope of the VCMI collects the bus waveform, it transmits the waveform data (bus voltage data) to the upper computer of the diagnosis equipment, and the upper computer of the diagnosis equipment knows in advance the communication rate of the waveform, the sampling rate of the oscilloscope, The characteristics of the bus, etc., the sampling rate of the oscilloscope is set by the upper computer of the diagnosis equipment, and the measured bus type and communication rate are stored in the upper computer of the diagnosis equipment in advance. If deployed in VCMI, the analysis algorithm is set in the FPGA of the oscilloscope, which makes the operation faster. The bus speed, decoding threshold, and bus protocol of the oscilloscope are preset by the upper computer of the diagnostic equipment.

In this embodiment of the present invention, the analysis result may include several communication data analysis dimensions in Table 1 below. The following analysis results are obtained through analysis. Each communication data analysis dimension is set with a corresponding threshold. By comparing the analysis result with the threshold, the corresponding internal bus fault, OBD fault, or ECU fault can be determined.

S/N	Communication data analysis dimension	unit
1	The total amount of communication messages	frame
2	total number of messages for error frames	frame
3	average message	frames/sec
4	peak message	frames/sec
5	bus load	%
6	message payload of the error frame	%
7	Communication volume of each ECU	frame
8	ECU communication load	%
9	Context before and after the error frame
10	Average rate of error frames	frames/sec

Table 1: Communication Data Analysis Dimensions

In the embodiment of the present invention, when the target bus information is the bus information of all automobile buses, that is, the states of all automobile buses and electronic control units are to be analyzed. The analysis result includes the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit, the current state of the electronic control unit, and the current state includes a normal state or a fault state; the current state is based on the electronic control unit. The communication volume of the control unit and/or the communication load rate of the electronic control unit is determined. Specifically, the communication data on each target bus in the target time period is collected according to the vehicle bus topology map, and the above differential calculation, filtering, decoding and decoding are performed to obtain the analysis result. The target time period is determined according to the user's query request.

The preset display mode is a single vehicle bus display mode, that is, the user wants to analyze a single target bus. Analysis of a single bus The analysis results include the total number of bus communication messages, the total number of messages in error frames, the average message volume, the peak message volume, the bus load rate, the message load of error frames, the communication volume of the electronic control unit, the At least one or more of communication load rate, error frame context data, and average rate of error frames. Specifically, the communication data on the target bus in the target time period is collected according to the target bus identifier, and the above differential calculation, filtering, decoding and decoding are performed to obtain the analysis result. The target time period is determined according to the user's query request.

Step 140: Generate display content according to the analysis result and a preset display mode.

Wherein, as shown in FIG. 3 , the single-car bus display mode includes one or more of a list, a bar graph, a waveform graph, a progress bar, a fan graph, and a message tree. Display content is generated according to the single vehicle bus display mode and the analysis result of the single vehicle bus. In the embodiment of the present invention, different display modes may be adopted for different communication data analysis dimensions. As shown in Table 2 below, several preferred display modes corresponding to the communication data analysis dimensions are given.

Table 2: The optimal display mode corresponding to the communication data analysis dimension

Among them, as shown in FIG. 4 , in the embodiment of the present invention, when the target bus information is the bus information of all automobile buses, that is, the states of all automobile buses and electronic control units should be analyzed. Specifically, by adding the analysis result to the vehicle bus topology map, the displayed content is obtained, including: marking the communication volume of each electronic control unit and/or the communication load rate of each electronic control unit and the current state in the vehicle In the bus topology diagram, the displayed content is obtained. For example, the communication load rate includes the occupancy rate of the ECU, etc., and it is updated in the car bus topology diagram. If the occupancy rate is too high, it means that the ECU is faulty.

Step 150: Present the displayed content to the user.

In the implementation of the present invention, after the user acquires the displayed content, the user can perform corresponding subsequent analysis according to the displayed content and the Log file.

In the embodiment of the present invention, by acquiring the communication data on the car bus, analyzing the communication data, and displaying the analysis result to the user according to the preset display mode, the communication load, communication quality and The communication frequency and other information between each ECU, and the monitored data are recorded, which effectively improves the efficiency of the user's fault analysis.

5 shows a schematic structural diagram of a bus data analysis device provided by an embodiment of the present invention, which is applied to an automobile diagnostic system, where the automobile diagnostic system is used to acquire communication data on each automobile bus, and the automobile bus is used for Communication between electronic control units. As shown in FIG. 5 , the apparatus 200 includes: a request module 210 , a collection module 220 , an analysis module 230 , a generation module 240 and a display module 250 .

a request module 210, configured to obtain a user's query request, where the query request carries target bus information;

A collection module 220, configured to collect communication data of the target bus according to the target bus information; the target bus is any one or more buses in the vehicle bus;

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;

The display module 250 is configured to display the displayed content to the user.

In an optional manner, the analyzing the communication data to obtain an analysis result includes: performing differential data calculation according to the communication data to obtain differential data; filtering the differential data to obtain filtered data decode the filtered differential data according to the preset decoding rules to obtain the decoded data; decode the decoded data according to the preset bus protocol to obtain the decoded data; according to the decoded data Perform the analysis and get the analysis result.

In an optional manner, the target bus information is bus information of all automobile buses; the analysis results include analysis results corresponding to each of the automobile buses; the preset display mode is an automobile bus topology diagram; The generating the display content according to the analysis result and the preset display mode includes: adding the analysis result to the vehicle bus topology map to obtain the display content; the nodes in the vehicle bus topology map represent various electronic components of the vehicle A control unit, the edges in the vehicle bus topology diagram represent the vehicle bus between each of the electronic control units.

In an optional manner, the analysis result includes 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, where the current state includes 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; The said analysis result is added to the vehicle bus topology map to obtain the display content, including: The communication volume of the control unit and/or the communication load rate of each electronic control unit and the current state are marked in the vehicle bus topology diagram, and the displayed content is obtained.

In an optional manner, before obtaining the query request of the user, before the query request carries the target bus information, the method further includes: obtaining the vehicle bus information between each electronic control unit; The electronic control unit and the vehicle bus information determine the vehicle bus topology map.

In an optional manner, the target bus information is the bus information of a single vehicle bus; the analysis result is the analysis result of a single vehicle bus; the preset display mode is a single vehicle bus display mode; the The display content is generated according to the analysis result and the preset display mode, including:

Display content is generated according to the single vehicle bus display mode and the analysis result of the single vehicle bus.

In an optional manner, the analysis results include the total amount of bus communication messages, the total amount of messages in error frames, the average message amount, the peak message amount, the bus load rate, the message load in error frames, and the communication of the electronic control unit. At least one or more of the amount of data, the communication load rate of the electronic control unit, the error frame context data, and the average rate of error frames; the single-car bus display mode includes list, bar graph, waveform graph, progress bar, sector Graph and one or more of the message tree species.

In an optional manner, the vehicle diagnostic system includes a diagnostic device host computer and a connecting device, and the diagnostic device host computer obtains the communication data on the automobile bus through the connecting device; the electronic control unit includes an automobile control unit and a connecting device. The vehicle-mounted automatic diagnosis device OBD; before obtaining the query request from the user, before the query request carries the target bus information, the method further includes: connecting the connecting device to the vehicle bus of each of the vehicle control units through a probe ; The connection device is connected with the vehicle-mounted automatic diagnosis device OBD.

In an optional manner, the connection device includes a car communication interface and an oscilloscope; the oscilloscope is connected to the car bus of each of the car control units; the oscilloscope communicates with the on-board automatic diagnosis device OBD through the car communication interface connect. In the embodiment of the present invention, by acquiring the communication data on the car bus, analyzing the communication data, and displaying the analysis result to the user according to the preset display mode, the communication load, communication quality and The communication frequency and other information between each ECU, and the monitored data are recorded, which effectively improves the efficiency of the user's fault analysis.

FIG. 6 shows a schematic structural diagram of a bus data analysis device provided by an embodiment of the present invention. 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 device may include: a processor (processor) 302 , a communication interface (Communications Interface) 304 , a memory (memory) 306 , and a communication bus 308 .

The processor 302 , the communication interface 304 , and the memory 306 communicate with each other through the communication bus 308 . The communication interface 304 is used 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 specifically may execute the relevant steps in the above-mentioned embodiments of the method for a bus data analysis device.

Specifically, program 310 may include program code, which includes 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 embodiments of the present invention. The one or more processors included in the bus data analysis device may be the same type of processors, such as one or more CPUs; or may be different types of processors, such as one or more CPUs and one or more ASICs.

The memory 306 is used to store the program 310 . Memory 306 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk memory.

The program 310 can be specifically called by the processor 302 to make the bus data analysis device perform the following operations:

Obtain a user's query request, where the query request carries target bus information;

Collect the communication data of target bus according to described target bus information; Described target bus is any one or more buses in automobile bus;

Analyzing the communication data to obtain an analysis result;

generating display content according to the analysis result and a preset display mode;

The displayed content is presented to the user.

In an optional manner, the analyzing the communication data to obtain an analysis result includes: performing differential data calculation according to the communication data to obtain differential data; filtering the differential data to obtain filtered data decode the filtered differential data according to the preset decoding rules to obtain the decoded data; decode the decoded data according to the preset bus protocol to obtain the decoded data; according to the decoded data Perform the analysis and get the analysis result.

In an optional manner, the target bus information is bus information of all automobile buses; the analysis results include analysis results corresponding to each of the automobile buses; the preset display mode is an automobile bus topology diagram; The generating the display content according to the analysis result and the preset display mode includes: adding the analysis result to the vehicle bus topology map to obtain the display content; the nodes in the vehicle bus topology map represent various electronic components of the vehicle. A control unit, the edges in the vehicle bus topology diagram represent the vehicle bus between each of the electronic control units.

In an optional manner, the analysis result includes 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, where the current state includes 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; The said analysis result is added to the vehicle bus topology map to obtain the display content, including: The communication volume of the control unit and/or the communication load rate of each electronic control unit and the current state are marked in the vehicle bus topology diagram, and the displayed content is obtained.

In an optional manner, before obtaining the query request of the user, before the query request carries the target bus information, the method further includes: obtaining the vehicle bus information between each electronic control unit; The electronic control unit and the vehicle bus information determine the vehicle bus topology map.

In an optional manner, the target bus information is the bus information of a single vehicle bus; the analysis result is the analysis result of a single vehicle bus; the preset display mode is a single vehicle bus display mode; the The display content is generated according to the analysis result and the preset display mode, including:

Display content is generated according to the single vehicle bus display mode and the analysis result of the single vehicle bus.

In an optional manner, the analysis results include the total amount of bus communication messages, the total amount of messages in error frames, the average message amount, the peak message amount, the bus load rate, the message load in error frames, and the communication of the electronic control unit. At least one or more of the amount of data, the communication load rate of the electronic control unit, the error frame context data, and the average rate of error frames; the single-car bus display mode includes list, bar graph, waveform graph, progress bar, sector Graph and one or more of the message tree species.

In an optional manner, the vehicle diagnostic system includes a diagnostic device host computer and a connecting device, and the diagnostic device host computer obtains the communication data on the automobile bus through the connecting device; the electronic control unit includes an automobile control unit and a connecting device. The vehicle-mounted automatic diagnosis device OBD; before obtaining the query request from the user, before the query request carries the target bus information, the method further includes: connecting the connecting device to the vehicle bus of each of the vehicle control units through a probe ; The connection device is connected with the vehicle-mounted automatic diagnosis device OBD.

In an optional manner, the connection device includes a car communication interface and an oscilloscope; the oscilloscope is connected to the car bus of each of the car control units; the oscilloscope communicates with the on-board automatic diagnosis device OBD through the car communication interface connect. In the embodiment of the present invention, by acquiring the communication data on the car bus, analyzing the communication data, and displaying the analysis result to the user according to the preset display mode, the communication load, communication quality and The communication frequency and other information between each ECU, and the monitored data are recorded, which effectively improves the efficiency of the user's fault analysis.

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 run on a bus data analysis device, causes the bus data analysis device to execute any of the above methods The bus data analysis method in the embodiment.

The executable instructions can specifically be used to cause the bus data analysis device to perform the following operations:

Obtain a user's query request, where the query request carries target bus information;

The communication data of the target bus is collected according to the target bus information; the target bus is any one or more buses in the vehicle bus;

Analyzing the communication data to obtain an analysis result;

generating display content according to the analysis result and a preset display mode;

The displayed content is presented to the user.

In an optional manner, the analyzing the communication data to obtain an analysis result includes: performing differential data calculation according to the communication data to obtain differential data; filtering the differential data to obtain filtered data decode the filtered differential data according to the preset decoding rules to obtain the decoded data; decode the decoded data according to the preset bus protocol to obtain the decoded data; according to the decoded data Perform the analysis and get the analysis result.

In an optional manner, the target bus information is bus information of all automobile buses; the analysis results include analysis results corresponding to each of the automobile buses; the preset display mode is an automobile bus topology diagram; The generating the display content according to the analysis result and the preset display mode includes: adding the analysis result to the vehicle bus topology map to obtain the display content; the nodes in the vehicle bus topology map represent various electronic components of the vehicle. A control unit, the edges in the vehicle bus topology diagram represent the vehicle bus between each of the electronic control units.

In an optional manner, the analysis result includes 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, where the current state includes 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; The said analysis result is added to the vehicle bus topology map to obtain the display content, including: The communication volume of the control unit and/or the communication load rate of each electronic control unit and the current state are marked in the vehicle bus topology diagram, and the displayed content is obtained.

In an optional manner, before obtaining the query request of the user, before the query request carries the target bus information, the method further includes: obtaining the vehicle bus information between each electronic control unit; The electronic control unit and the vehicle bus information determine the vehicle bus topology map.

In an optional manner, the target bus information is the bus information of a single vehicle bus; the analysis result is the analysis result of a single vehicle bus; the preset display mode is a single vehicle bus display mode; the The display content is generated according to the analysis result and the preset display mode, including:

Display content is generated according to the single vehicle bus display mode and the analysis result of the single vehicle bus.

In an optional manner, the analysis results include the total amount of bus communication messages, the total amount of messages in error frames, the average message amount, the peak message amount, the bus load rate, the message load in error frames, and the communication of the electronic control unit. At least one or more of the amount of data, the communication load rate of the electronic control unit, the error frame context data, and the average rate of error frames; the single-car bus display mode includes list, bar graph, waveform graph, progress bar, sector Graph and one or more of the message tree species.

In an optional manner, the vehicle diagnostic system includes a diagnostic device host computer and a connecting device, and the diagnostic device host computer obtains the communication data on the automobile bus through the connecting device; the electronic control unit includes an automobile control unit and a connecting device. The vehicle-mounted automatic diagnosis device OBD; before obtaining the query request from the user, before the query request carries the target bus information, the method further includes: connecting the connecting device to the vehicle bus of each of the vehicle control units through a probe ; The connection device is connected with the vehicle-mounted automatic diagnosis device OBD.

In an optional manner, the connection device includes a car communication interface and an oscilloscope; the oscilloscope is connected to the car bus of each of the car control units; the oscilloscope communicates with the on-board automatic diagnosis device OBD through the car communication interface connect. In the embodiment of the present invention, by acquiring the communication data on the car bus, analyzing the communication data, and displaying the analysis result to the user according to the preset display mode, the communication load, communication quality and The communication frequency and other information between each ECU, and the monitored data are recorded, which effectively improves the efficiency of the user's fault analysis.

An embodiment of the present invention further provides an automobile diagnosis system, including the above-mentioned bus data analysis device or the above-mentioned bus data analysis device.

An embodiment of the present invention provides a bus data analysis apparatus, which is used for executing the above bus data analysis method.

An embodiment of the present invention provides a computer program, which can be invoked by a processor to cause a bus data analysis device to execute the bus data analysis method in any of the above method embodiments.

An embodiment of the present invention provides a computer program product. The computer program product includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are run on a computer, the computer is made to execute any of the above. The bus data analysis method in the method embodiment.

The algorithms or displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used with teaching based on this. The structure required to construct such a system is apparent from the above description. Furthermore, embodiments of the present invention are not directed to any particular programming language. It is to be understood that various programming languages may be used to implement the inventions described herein, and that the descriptions of specific languages above are intended to disclose the best mode for carrying out the invention.

In the description provided herein, numerous specific details are set forth. It will be 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 is to be understood that, in the above description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together into a single implementation in order to simplify the invention and to aid in the understanding of one or more of the various aspects of the invention. examples, figures, or descriptions thereof. This disclosure, however, should not be construed as reflecting an intention that the invention as claimed requires more features than are expressly recited in each claim.

Those skilled in the art can understand that the modules in the device in the embodiment can be adaptively changed and arranged in one or more devices different from the embodiment. The modules or units or components in the embodiments may be combined into one module or unit or component, and they may be divided into multiple sub-modules or sub-units or sub-assemblies. All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method so disclosed may be employed in any combination, unless at least some of such features and/or procedures or elements are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including 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-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art 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 can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names. The steps in the above embodiments should not be construed as limitations on the execution order unless otherwise specified.

Claims (13)

1. A method for analyzing bus data, characterized in that it is applied to an automobile diagnostic system, wherein the automobile diagnostic system is used to obtain communication data on various automobile buses, and the automobile bus is used for communication between electronic control units of automobiles, The method includes:

   Obtain a user's query request, where the query request carries target bus information;

   The communication data of the target bus is collected according to the target bus information; the target bus is any one or more buses in the vehicle bus;

   Analyzing the communication data to obtain an analysis result;

   generating display content according to the analysis result and a preset display mode;

   The displayed content is presented to the user.
2. The method according to claim 1, wherein the analyzing the communication data to obtain an analysis result comprises:

   Perform differential data calculation 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;

   Analysis is performed according to the decoded data to obtain an analysis result.
3. The method according to claim 1, wherein the target bus information is bus information of all automobile buses; the analysis results include analysis results corresponding to each of the automobile buses; the preset display mode is automobile bus topology;

   The generating display content according to the analysis result and the preset display mode includes:

   Adding the analysis result to the vehicle bus topology diagram to obtain the display content; the nodes in the vehicle bus topology diagram represent each electronic control unit of the vehicle, and the edges in the vehicle bus topology diagram represent each of the electronic control units between car buses.
4. The method according to claim 3, wherein the analysis result includes 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, and the current state includes normal state or 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 the vehicle bus topology diagram to obtain display content, including:

   The communication volume of each electronic control unit and/or the communication load rate of each electronic control unit and the current state are marked on the vehicle bus topology diagram to obtain the displayed content.
5. The method according to claim 3, characterized in that, before acquiring the query request of the user, before the query request carries the target bus information, the method further comprises:

   Obtain vehicle bus information between various electronic control units;

   The vehicle bus topology map is determined according to each of the electronic control units and the vehicle bus information.
6. The method according to claim 1, wherein the target bus information is bus information of a single vehicle bus; the analysis result is an analysis result of a single vehicle bus; the preset display mode is a single vehicle bus display model;

   The generating display content according to the analysis result and the preset display mode includes:

   Display content is generated according to the single vehicle bus display mode and the analysis result of the single vehicle bus.
7. The method according to claim 6, wherein the analysis results include the total amount of bus communication messages, the total amount of messages in error frames, the average message amount, the peak message amount, the bus load rate, the message load in error frames, the electronic at least one or more of the communication volume of the control unit, the communication load rate of the electronic control unit, the error frame context data, and the average rate of error frames; the single-car bus display mode includes list, bar graph, waveform graph, One or more of a progress bar, a pie chart, and a message tree.
8. The method according to claim 1, wherein the vehicle diagnostic system comprises a diagnostic device host computer and a connecting device, the diagnostic device host computer obtains the communication data on the automobile bus through the connecting device; the electronic control unit includes Automobile control unit and on-board automatic diagnosis equipment OBD;

   Before obtaining the query request of the user, before the query request carries the target bus information, the method further includes:

   The connecting device is connected to the car bus of each of the car control units through probes;

   The connection device is connected to the OBD of the vehicle-mounted automatic diagnosis device.
9. The method according to claim 8, wherein the connection device comprises a vehicle communication interface and an oscilloscope;

   the oscilloscope is connected to the car bus of each of the car control units;

   The oscilloscope is connected with the car standard interface OBD through the car communication interface.
10. A bus data analysis device is characterized in that, it is applied to an automobile diagnostic system, the automobile diagnostic system is used to obtain communication data on each automobile bus, and the automobile bus is used for communication between electronic control units of automobiles, The device includes:

    a request module, configured to obtain a user's query request, where the query request carries target bus information;

    a collection module, used for collecting communication data of the target bus according to the target bus information; the target bus is any one or more buses in the vehicle bus;

    an analysis module for analyzing the communication data to obtain an analysis result;

    a generating module for generating display content according to the analysis result and a preset display mode;

    The display module is used for displaying the display content to the user.
11. A bus data analysis device, characterized in that it comprises: a processor, a memory, a communication interface and a communication bus, and the processor, the memory and the communication interface communicate with each other through the communication bus;

    The memory is used for storing at least one executable instruction, and the executable instruction enables the processor to perform the operation of the bus data analysis method according to any one of claims 1-9.
12. An automobile diagnosis system, characterized in that it comprises the bus data analysis device according to claim 10 or the bus data analysis device according to claim 11 .
13. A computer-readable storage medium, wherein at least one executable instruction is stored in the storage medium, and when the executable instruction is executed on the bus data analysis device, the bus data analysis device is made to execute the method as claimed in claim 1- 9. Operation of any one of the bus data analysis methods.

Images