CN114415898A - Method and system for reinjecting real vehicle data into Simulink model - Google Patents
Method and system for reinjecting real vehicle data into Simulink model Download PDFInfo
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Abstract
The invention discloses a method and a system for reinjecting real vehicle data into a Simulink model, wherein the real vehicle data is reinjected in the following steps of 1) reinjection data extraction; the reinjection data extraction is to extract effective data from problem data on the real vehicle and convert the effective data into data format timeseries which can be directly injected into a Simlink model; 2) constructing a reinjection model; the reinjection model construction is to copy a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modify an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface; 3) and operating the extracted reinjection data on the reinjection model, namely realizing real vehicle data reinjection. The invention can automatically complete the data reinjection work, shorten the problem troubleshooting period and further improve the working efficiency.
Description
Technical Field
The invention relates to improvement of a data reinjection technology, in particular to a method and a system for reinjecting real vehicle data into a Simulink model, and belongs to the technical field of vehicles.
Background
With the increasing development of national economy, the demand of people on automobiles is gradually transited from hard experience brought by hardware to soft experience brought by software, thereby meeting the vigorous development situation of vehicle-mounted software. With the improvement of the functional complexity of software, complex and various algorithms and strategies are introduced into various functional fields, such as automatic driving, intelligent vehicle control, intelligent chassis and the like.
In the development stage of the vehicle, a large number of real vehicle road tests exist, a large number of test problems also exist, and when the complexity of software is high, even a functional developer cannot directly locate the cause of the problem according to problem data. The common way is to inject data back into the software emulation and locate the problem point by means of software debugging.
The Simulink tool of Matlab can be used for conveniently developing the development work of the algorithm and the strategy. In the industry, most of the current host factories adopt the tool to develop application software.
However, due to the essential difference between the application scenarios of the real vehicle data acquisition toolchain and the development toolchain, data cannot be directly reinjected to the Simulink model, and many conversion steps are usually required. Meanwhile, as the volume of the data increases, the process of data reinjection becomes more complicated and tedious. Based on this, the problem needs to be solved urgently, the repeated labor of developers is avoided, the problem troubleshooting period is shortened, and further the benefit is brought to the development of the whole vehicle.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for real vehicle data reinjection Simulink model.
The technical scheme of the invention is realized as follows:
a method for reinjecting real vehicle data into a Simulink model is characterized by comprising the following steps: the steps are as follows,
1) extracting reinjection data; the reinjection data extraction is to extract effective data from problem data on the real vehicle and convert the effective data into data format timeseries which can be directly injected into a Simlink model;
2) constructing a reinjection model; the reinjection model construction is to copy a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modify an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface; the reconstructed replication model forms a reinjection model;
3) and operating the extracted reinjection data on the reinjection model, namely realizing the reinjection of the real vehicle data into the Simulink model.
Preferably, when extracting the reinjection data in step 1), firstly determining a problem model on the real vehicle based on the problem data of the real vehicle, then finding the reinjection Simulink model corresponding to the problem model on the real vehicle on the computer, reading all interface names required by the reinjection Simulink model, then performing matching on the interface names in the problem data, extracting the data with consistent names, and converting the data into a timeseries format, thereby realizing the extraction of the reinjection data.
Wherein, the specific steps of the extraction of the reinjection data in the step 1) are as follows,
1.1) pressing a data selection button on a computer operation interface;
1.2) popping up a file selection window on a computer display interface;
1.3) selecting corresponding question data on a computer operation interface;
1.4) displaying the absolute path of the data on a computer display interface;
1.5) then loading the problem data to matlab;
1.6) pressing a button for selecting the model on the computer operation interface;
1.7) popping up a model selection window on a computer display interface;
1.8) selecting a reinjection Simulink model corresponding to the problem model on a computer operation interface;
1.9) displaying the absolute path of the reinjection Simulink model on a computer display interface;
1.10) reading the interface name of the outermost layer of the reinjection Simulink model;
1.11) finding out the question data matched with the interface name and converting the data format into a time format;
1.12) extracting reinjection data.
And 2) modifying the interfaces of the replication model in the step 2), specifically, deleting all original interfaces of the replication model, adding a specific reinjection interface From works to the replication model, and directly associating the reinjection interface with the extracted reinjection data to construct and form the reinjection model.
The utility model provides an automatic realize system of real vehicle data reinjection Simulink model which characterized in that: comprises that
An interactive interface module; the interactive interface module is provided with an interactive interface, and the interactive interface comprises a plurality of plates of reinjection data loading, reinjection model loading, reinjection button starting, reinjection progress and information prompt;
the reinjection data extraction module: the data format timeliness is used for extracting effective data from problem data on a real vehicle and converting the effective data into data format timeseries which can be directly injected by a Simlink model;
a reinjection model construction module: the method is used for copying a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modifying an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface.
Setting a reinjection data loading button on the interactive interface, directly entering a computer file system to select corresponding problem data by clicking the reinjection data loading button, and displaying an absolute path of the problem data on the interactive interface after the problem data is selected; the path will become the entry for the extraction of the reinjection data, and the corresponding data will become the target data for the reinjection.
And setting a reinjection model loading button on the interactive interface, directly accessing a computer file system to select a model needing reinjection by clicking the reinjection model loading button, and displaying an absolute path of the model on the interactive interface after the selection is finished, wherein the path is an extraction inlet of the reinjection model, and the corresponding model is a target model of the reinjection.
And setting a start reinjection button on the interactive interface, clicking the start reinjection button, and starting a data reinjection function.
And a reinjection progress prompting bar is arranged on the interactive interface and used for prompting the reinjection progress.
And an information prompt box is arranged on the interactive interface and used for displaying abnormal conditions and execution results.
Compared with the prior art, the invention has the following beneficial effects:
based on the design of the invention, a user can directly operate and complete the whole data reinjection process on the interactive interface, the operation is simple, the technical threshold of data reinjection is reduced, and all the reinjection processes are automatically executed after being packaged in the background, so that both hands of people are fully liberated, the problem positioning speed is accelerated, and the rapid solution of the vehicle problem is promoted.
In the whole data reinjection process, a user can complete the function of reinjecting real vehicle data into Simulink only by simple button clicking and file selection, and the burden of development engineers in actual work is greatly reduced.
Drawings
FIG. 1 is a diagram of the sub-function structure of the real vehicle data reinjection Simulink model system.
FIG. 2 is a schematic view of an interactive interface of the present invention.
FIG. 3 is a flow chart of the reinjection data extraction step of the present invention.
FIG. 4 is a flow chart of the steps of construction of the reinjection model of the present invention.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
The specific software operation of the invention is based on a Matlab platform and is compiled by using m language.
The present invention will be described in further detail below with reference to the drawings.
As shown in fig. 1, a system for automatically implementing real vehicle data reinjection Simulink model is composed of three sub-functional modules, which are respectively an interactive interface module, an reinjection data extraction module, and an reinjection model construction module.
An interactive interface module; the interactive interface module is provided with an interactive interface, and the interactive interface comprises a plurality of plates of reinjection data loading, reinjection model loading, reinjection button starting, reinjection progress and information prompt.
The reinjection data extraction module: the method is used for extracting effective data from problem data on a real vehicle and converting the effective data into data format timeseries which can be directly injected by a Simlink model.
A reinjection model construction module: the method is used for copying a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modifying an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface. Firstly, deleting the original interface of the model, because the original interface does not support data reinjection; then adding a specific reinjection interface From works to the model, and directly associating the reinjection interface with the extracted reinjection data.
The detailed design of the interactive interface shown in fig. 1 is shown in fig. 2, and a schematic diagram of the interactive interface is shown in fig. 2. In this schematic diagram, the interactive windows necessary for the interactive interface are presented.
The interactive interface shown in FIG. 2 is developed based on an App designer tool of Matlab.
The upper computer display name 100 represents the name of the upper computer.
The start button 101 is a start button for data reinjection, and can be started by clicking after reinjection data and a reinjection model are selected. And clicking a start reinjection button to start a data reinjection function.
The select data button 102 (i.e., the remark data load button) is an entry for selecting data, and when pressed, enters the file selection system, and after the data ready for remark is selected, an absolute path of the data is displayed in the first text display window 103. Clicking the data selection button 102 can directly enter a computer file system to select corresponding problem data, and displaying an absolute path of the problem data on an interactive interface after the selection is finished; the path will become the entry for the extraction of the reinjection data, and the corresponding data will become the target data for the reinjection.
The select model button 105 (i.e., the reinjection model load button) is an entry for selecting a model, and when pressed, enters the file selection system, and after the model ready for reinjection is selected, the absolute path of the model is displayed in the text display window two 106. Clicking the selection model button 105 can directly access the computer file system to select the model needing to be reinjected, and after the selection is completed, an absolute path of the model is displayed on the interactive interface, wherein the path becomes an extraction inlet of the reinjected model, and the corresponding model becomes a target model of the reinjection.
The progress bar 107 is used for showing the progress of model reinjection, and is presented in percentage, and the stage completion display module 104 displays the completed steps in stages.
The information prompt box 108 is used for prompting some additional information, such as exception information and execution results.
A method for reinjecting real vehicle data into a Simulink model comprises the following steps,
1) extracting reinjection data; the reinjection data extraction is to extract effective data from problem data on the real vehicle and convert the effective data into data format timeseries which can be directly injected into a Simlink model; generally, the data collected by the real vehicle is data covering the whole system, the number of signals is often thousands or tens of thousands, and the data really needed to be reinjected for a specific problem is far from being so much. Therefore, all interface names required by the reinjected Simulink model are read out, then the interface names are matched with the problem data, and the data with consistent names are extracted and converted into a time format.
2) Constructing a reinjection model; the reinjection model construction is to copy a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modify an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface; the reconstructed replication model forms a reinjection model; specifically, all original interfaces of the replication model are deleted, then a specific reinjection interface From works is added to the replication model, and the reinjection interface is directly associated with the extracted reinjection data, so that the reinjection model is constructed and formed.
3) And operating the extracted reinjection data on the reinjection model, namely realizing the reinjection of the real vehicle data into the Simulink model.
Preferably, when extracting the reinjection data in step 1), firstly determining a problem model on the real vehicle based on the problem data of the real vehicle, then finding the reinjection Simulink model corresponding to the problem model on the real vehicle on the computer, reading all interface names required by the reinjection Simulink model, then performing matching on the interface names in the problem data, extracting the data with consistent names, and converting the data into a timeseries format, thereby realizing the extraction of the reinjection data.
Wherein, the specific steps of the extraction of the reinjection data in the step 1) are as follows,
1.1) pressing a data selection button on a computer operation interface;
1.2) popping up a file selection window on a computer display interface;
1.3) selecting corresponding question data on a computer operation interface;
1.4) displaying the absolute path of the data on a computer display interface;
1.5) then loading the problem data to matlab;
1.6) pressing a button for selecting the model on the computer operation interface;
1.7) popping up a model selection window on a computer display interface;
1.8) selecting a reinjection Simulink model corresponding to the problem model on a computer operation interface;
1.9) displaying the absolute path of the reinjection Simulink model on a computer display interface;
1.10) reading the interface name of the outermost layer of the reinjection Simulink model;
1.11) finding out the question data matched with the interface name and converting the data format into a time format;
1.12) extracting reinjection data.
Step 1) extraction of the reinjection data is detailed in a flow chart of the reinjection data extraction step in fig. 3, and as can be seen from fig. 3, the extraction of the reinjection data depends on a user to select the reinjection data and a reinjection model through an interactive interface. After the relative path of the data is acquired, the data is loaded to matlab, preliminary data arrangement is needed here, the format of the data is identified, different data reading modes are selected according to the data format, and then effective data content is extracted, wherein the effective data content generally comprises the internal signal name, the signal value and the time information of the data. After the relative path of the model is obtained, the name of the outermost layer interface of the model is read firstly, then the interface name and the data which are primarily arranged are compared one by one, all the data of which the names can be matched are extracted, and then the extracted data are converted into a time format by combining with time information. Finally, completion of the extraction of the reinjection data is displayed in the stage completion display module 104.
It can also be seen from the flow chart of the reinjection data extraction step of fig. 3 that the reinjection data extraction has already started after the data and model selection is completed, without waiting for the user to click the start button for triggering. The purpose of the design is to save the time for reinjection, in the practical process, relatively large data are often encountered, and a certain time is often spent when the matlab loads the data with the large volume, so that the data are preprocessed by the method, and the time for reinjection is reduced.
The construction of the reinjection model in the step 2) is detailed in a flow chart of the construction steps of the reinjection model in fig. 4, and as can be seen from fig. 4, the reinjection model construction is performed only after the completion of the extraction of the reinjection data and the user clicks the start button 101. According to the absolute path of the model, the selected reinjection model is automatically copied to the absolute path of the model, then the copied model is opened, all interfaces outside the model are deleted, a test interface module from works space is added for each interface, and then a corresponding reinjection signal is associated with the test interface according to the interface name, namely data in a time series format of the reinjection data are extracted. If there is no corresponding reinjection signal in the above-mentioned association process, there are no two cases, one is that the interface name of the model is inconsistent with that of the signal in the data, and the other is that there is no corresponding signal recorded in the data. At this time, the information prompt box 108 prompts the name of the signal which cannot be reinjected, and the reinjection interface which fails to be associated is replaced by the Const module and filled with the default value. Finally, completion of construction of the reinjection model is displayed in the stage completion display module 104.
After the steps are completed, the matlab working path is automatically switched to the absolute path of the reinjection model, the user can operate the model by clicking the operation button of Simulink, and simulation and test are carried out as required, so that the problem is found out.
Reviewing the whole implementation process, the user only needs to click a button and select a file simply to complete the function of annotating the Simulink with the real vehicle data. Really reducing the burden of development engineers in the middle of practical work.
Finally, it should be noted that the above-mentioned examples of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, it will be apparent to those skilled in the art that other variations and modifications can be made based on the above description. Not all embodiments are exhaustive. All obvious changes and modifications of the present invention are within the scope of the present invention.
Claims (10)
1. A method for reinjecting real vehicle data into a Simulink model is characterized by comprising the following steps: the steps are as follows,
1) extracting reinjection data; the reinjection data extraction is to extract effective data from problem data on the real vehicle and convert the effective data into data format timeseries which can be directly injected into a Simlink model;
2) constructing a reinjection model; the reinjection model construction is to copy a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modify an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface; the reconstructed replication model forms a reinjection model;
3) and operating the extracted reinjection data on the reinjection model, namely realizing the reinjection of the real vehicle data into the Simulink model.
2. The method for real vehicle data reinjection Simulink model according to claim 1, wherein: when the reinjection data in the step 1) is extracted, firstly, a problem model on the real vehicle is determined based on the problem data of the real vehicle, then, a reinjection Simulink model corresponding to the problem model on the real vehicle is found on a computer, all interface names required by the reinjection Simulink model are read out, then, the interface names are matched with the problem data, the data with the consistent names are extracted, and the data are converted into a timeseries format, so that the reinjection data are extracted.
3. The method for real vehicle data reinjection Simulink model according to claim 1, wherein: the extraction of the reinjection data in the step 1) comprises the following specific steps,
1.1) pressing a data selection button on a computer operation interface;
1.2) popping up a file selection window on a computer display interface;
1.3) selecting corresponding question data on a computer operation interface;
1.4) displaying the absolute path of the data on a computer display interface;
1.5) then loading the problem data to matlab;
1.6) pressing a button for selecting the model on the computer operation interface;
1.7) popping up a model selection window on a computer display interface;
1.8) selecting a reinjection Simulink model corresponding to the problem model on a computer operation interface;
1.9) displaying the absolute path of the reinjection Simulink model on a computer display interface;
1.10) reading the interface name of the outermost layer of the reinjection Simulink model;
1.11) finding out the question data matched with the interface name and converting the data format into a time format;
1.12) extracting reinjection data.
4. The method for real vehicle data reinjection Simulink model according to claim 1, wherein: and 2) modifying the interfaces of the replication model in the step 2), specifically, deleting all original interfaces of the replication model, adding a specific reinjection interface From works to the replication model, and directly associating the reinjection interface with the extracted reinjection data to construct and form the reinjection model.
5. The utility model provides an automatic realize system of real vehicle data reinjection Simulink model which characterized in that: comprises that
An interactive interface module; the interactive interface module is provided with an interactive interface, and the interactive interface comprises a plurality of plates of reinjection data loading, reinjection model loading, reinjection button starting, reinjection progress and information prompt;
the reinjection data extraction module: the data format timeliness is used for extracting effective data from problem data on a real vehicle and converting the effective data into data format timeseries which can be directly injected by a Simlink model;
a reinjection model construction module: the method is used for copying a reinjection Simulink model matched with a problem model on an actual vehicle on a computer to obtain a copy model, and modifying an interface of the copy model so that reinjection data can be reinjected into the copy model through the modified interface.
6. The system for automatically realizing real vehicle data reinjection Simulink model according to claim 5, wherein: setting a reinjection data loading button on the interactive interface, directly entering a computer file system to select corresponding problem data by clicking the reinjection data loading button, and displaying an absolute path of the problem data on the interactive interface after the problem data is selected; the path will become the entry for the extraction of the reinjection data, and the corresponding data will become the target data for the reinjection.
7. The system for automatically realizing real vehicle data reinjection Simulink model according to claim 5, wherein: and setting a reinjection model loading button on the interactive interface, directly accessing a computer file system to select a model needing reinjection by clicking the reinjection model loading button, and displaying an absolute path of the model on the interactive interface after the selection is finished, wherein the path is an extraction inlet of the reinjection model, and the corresponding model is a target model of the reinjection.
8. The system for automatically realizing real vehicle data reinjection Simulink model according to claim 5, wherein: and setting a start reinjection button on the interactive interface, clicking the start reinjection button, and starting a data reinjection function.
9. The system for automatically realizing real vehicle data reinjection Simulink model according to claim 5, wherein: and a reinjection progress prompting bar is arranged on the interactive interface and used for prompting the reinjection progress.
10. The system for automatically realizing real vehicle data reinjection Simulink model according to claim 5, wherein: and an information prompt box is arranged on the interactive interface and used for displaying abnormal conditions and execution results.
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