Shulou(Shulou.com)06/02 Report--

With the gradual popularization of intelligent driving technology in new vehicles, a lot of real vehicle testing work needs to be done in the vehicle research and development phase. the current testing method is mainly to extract the test scene and analyze the test data according to the standards and regulations after collecting the real vehicle data. The survey shows that the vast majority of intelligent driving R & D manufacturers mainly use traditional manual analysis or semi-automatic data processing with the help of non-professional tools, and the efficiency of test and analysis is very low.

Because the road test does not drive sequentially according to the predetermined working conditions, various scenes often appear irregularly in the process of collection, which brings a lot of difficulties to data screening and analysis. Generally speaking, the step of data analysis is to extract a specific scene by playing back the data, and then evaluate the data, but often the time of data extraction and analysis is the same as that of the real car, or even more.

In order to solve the above problems, Jingwei Hengrun independently developed a sharp tool INTEWORK-VDA tool for data analysis based on parallel and scientific computing platform, through which the rapid screening and scientific evaluation of test scenarios in real vehicle recording data can be realized. VDA includes the following main functional modules:

The use of VDA tools can greatly improve the analysis efficiency of collected data, and quickly and automatically generate analysis results and reports. The following is the time-consuming comparison between ACC and stop and start data analysis based on the traditional method and using VDA software (data collected in 3 hours of real cars, including 1G message files and 4.5G video files):

Typical functions of VDA

? Scene quick screening

Based on VDA, rapid scene screening and visual analysis can be realized. The following are the conditions for input LDW wire pressing alarm screening. The software can list all data that meet the conditions in the form of data segments, and users can view any data that meets the LDW alarm scene and support synchronous playback of bus signals and video data.

? Automatic extraction of key evaluation indexes

Support hundreds of intelligent driving site code tests and open road testing key indicators automatic extraction, data statistics and test report automatic generation.

? Data visualization

The curve analysis module of VDA provides a variety of curve viewing functions, which can mark, enlarge and reduce the signal and display conventional statistical results such as maximum, minimum, standard deviation and average.

? Test case editing

VDA supports the input of test cases and test result evaluation criteria for typical test scenarios, and use cases can be directly reused in subsequent tests as accumulation.

? Use case execution and report generation

The edited use case can be executed and analyzed combined with the data collected by the real car, and the software automatically generates the analysis results according to the screening conditions and evaluation criteria, and can support the automatic generation and export of test reports in pdf, html and excel formats.

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