Search

CN-121979897-A - Test method and device for vehicle-mounted event data record

CN121979897ACN 121979897 ACN121979897 ACN 121979897ACN-121979897-A

Abstract

The invention provides a test method and a test device for vehicle-mounted event data records. The method comprises the steps of obtaining field values of a plurality of fields of a vehicle-mounted event data record by a signal simulation system, generating scene simulation data based on the field values, transmitting the scene simulation data to a signal reporting system, uploading the scene simulation data to a vehicle networking platform by the signal reporting system, obtaining a pulling value of the scene simulation data from the vehicle networking platform by an analysis system, obtaining an expected value of the scene simulation data from the signal simulation system, and comparing the expected value with the pulling value to generate a comparison report. In the mode, comprehensive test support can be provided for development and improvement, pattern authentication and quality control of EDR products, reliability and data recording quality of the EDR products are improved, and more reliable data basis is provided for analysis and responsibility identification of automobile safety accidents.

Inventors

  • ZHOU GUANGYING

Assignees

  • 奇瑞汽车股份有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. A method for testing a vehicle event data record, the method comprising: The signal simulation system acquires field values of a plurality of fields of the vehicle-mounted event data record, generates scene simulation data based on the field values, and transmits the scene simulation data to the signal reporting system; the signal reporting system uploads the scene simulation data to a vehicle networking platform; The analysis system acquires a pulling value of the scene simulation data from the Internet of vehicles platform, acquires an expected value of the scene simulation data from the signal simulation system, compares the expected value with the pulling value, and generates a comparison report.
  2. 2. The method of claim 1, wherein the development tool design interface of the signal simulation system is pre-selected with a plurality of field management units; the method for acquiring the field values of the multiple fields of the vehicle-mounted event data record by the signal simulation system comprises the following steps: The signal simulation system acquires field values input or selected by a user in a plurality of field management units.
  3. 3. The method according to claim 2, wherein after the step of acquiring the field values input or selected by the user at a plurality of the field management units, the method further comprises: If the user does not input or select a field value at the field management unit, the signal modeling system determines the field value based on the number of bytes occupied by the field of the field management unit.
  4. 4. The method of claim 1, wherein generating scene simulation data based on a plurality of the field values comprises: The signal simulation system converts a plurality of field values into 16-system data, assembles the 16-system data into byte character strings based on the field requirements in a preset signal document, and takes the byte character strings as scene simulation data.
  5. 5. The method of claim 4, wherein the step of the signal reporting system uploading the scene simulation data to a vehicle networking platform comprises: The signal reporting system encrypts and encapsulates the byte character string into a vehicle-mounted event data record message based on a hash encryption mode; the signal reporting system encapsulates a plurality of appointed fields in the byte character string into a login message; The signal reporting system uploads the login message to the Internet of vehicles platform in a message queue telemetry transmission mode; And if the login message is successfully uploaded, the signal reporting system uploads the vehicle-mounted event data record message to a vehicle networking platform.
  6. 6. The method of claim 5, wherein after the step of uploading the login message to the internet of vehicles platform by the signal reporting system through message queue telemetry transmission, the method further comprises: If the login message fails to be uploaded, the signal reporting system transmits error information of the login message failed to be uploaded to the analysis system; after the step that the signal reporting system uploads the vehicle-mounted event data record message to the internet of vehicles platform, the method further comprises the following steps: And if the uploading of the vehicle-mounted event data record message fails, the signal reporting system transmits error information of the uploading failure of the vehicle-mounted event data record message to the analysis system.
  7. 7. The method of claim 5, wherein the step of the signal reporting system uploading the vehicle event data record message to a vehicle networking platform comprises: The signal reporting system pushes the vehicle-mounted event data record message to a cluster through an asynchronous sending mode, so that the cluster stores the vehicle-mounted event data record message in a distributed mode; And the Internet of vehicles platform subscribes the vehicle-mounted event data record message from the cluster.
  8. 8. The method according to claim 1, wherein the method further comprises: The Internet of vehicles platform determines a pull value based on the scene simulation data, and displays the pull value on a page; the signal simulation system determines an expected value based on the scene simulation data.
  9. 9. The method of claim 1, wherein the step of the analysis system comparing the expected value to the pulled value to generate a comparison report comprises: the analysis system performs field level comparison and overall level comparison on the expected value and the pull value, wherein the field level comparison comprises numerical field comparison, time field comparison, state field comparison or identification field comparison, and the overall level comparison characterizes the overall passing rate of the expected value and the pull value; The analysis system generates a comparison report based on the results of the field level comparison and the overall level comparison, wherein the comparison report comprises a full-scale result, an abnormal data and a data index.
  10. 10. A test device for vehicle event data recording, the device comprising: The scene simulation data generation module is used for acquiring field values of a plurality of fields of the vehicle-mounted event data record by the signal simulation system, generating scene simulation data based on the field values, and transmitting the scene simulation data to the signal reporting system; The scene simulation data uploading module is used for uploading the scene simulation data to the Internet of vehicles platform by the signal reporting system; The scene simulation data comparison module is used for acquiring a pulling value of the scene simulation data from the Internet of vehicles platform by the analysis system, acquiring an expected value of the scene simulation data from the signal simulation system, and comparing the expected value with the pulling value to generate a comparison report.

Description

Test method and device for vehicle-mounted event data record Technical Field The invention relates to the technical field of automobile safety test, in particular to a test method and device for vehicle-mounted event data record. Background The vehicle Event Data Recorder (EDR) can record the running state information and the driver operation information of the vehicle before and after the collision of the vehicle or other specific events, and has important significance for accident analysis, responsibility identification and vehicle safety improvement. The EDR needs to record various fields, including fields of vehicle motion parameters (such as longitudinal speed change delta-V, transverse acceleration and the like), driver operation parameters (such as brake pedal position, accelerator pedal position and the like), safety system states (such as safety belt states, airbag unfolding time and the like), system self information (such as ECU (‌ Electronic Control Unit ‌, electronic control unit) numbers, vehicle identification codes and the like) and the like, develops an automation tool, can realize field verification in a full coverage manner, and improves test efficiency. The existing EDR test method mainly has the following defects: (1) The test coverage field is incomplete, and partial parameters related to collision are often focused, so that the test of multiple fields such as system state, driver operation and the like is ignored; (2) The lack of verification of the logical relationship among the fields can not find the abnormality of the data record caused by the logical error; (3) The test scene is single, and the record performance of the EDR in various complex driving events is difficult to verify. Therefore, there is a need for a testing system and method that can fully cover all recorded fields of an EDR, verify logical relationships of the fields, accommodate multiple testing scenarios, and have high precision synchronization capabilities. Disclosure of Invention In view of the above, the present invention aims to provide a testing method and device for vehicle event data records, so as to solve the problems of insufficient coverage, missing logic verification, single scene, etc. of EDR test fields in the prior art. In a first aspect, the embodiment of the invention provides a method for testing a vehicle-mounted event data record, which comprises the steps that a signal simulation system acquires field values of a plurality of fields of the vehicle-mounted event data record, generates scene simulation data based on the field values, and transmits the scene simulation data to a signal reporting system; the signal reporting system uploads the scene simulation data to the Internet of vehicles platform, the analysis system acquires the pulling value of the scene simulation data from the Internet of vehicles platform, acquires the expected value of the scene simulation data from the signal simulation system, compares the expected value with the pulling value, and generates a comparison report. In an alternative embodiment of the present application, the development tool design interface of the signal simulation system is provided with a plurality of field management units in a preselection manner, and the step of obtaining field values of a plurality of fields of the vehicle-mounted event data record by the signal simulation system includes the step of obtaining the field values input or selected by a user in the plurality of field management units by the signal simulation system. In an alternative embodiment of the present application, after the step of obtaining the field values input or selected by the user in the plurality of field management units, the method further includes determining, by the signal simulation system, the field value based on the number of bytes occupied by the field of the field management unit if the field value is not input or selected by the user in the field management unit. In an alternative embodiment of the present application, the step of generating scene simulation data based on the plurality of field values includes the signal simulation system converting the plurality of field values into 16-ary data, assembling the 16-ary data into a byte string based on field requirements in a preset signal document, and using the byte string as the scene simulation data. In an optional embodiment of the application, the step of uploading the scene simulation data to the internet of vehicle platform by the signal reporting system comprises encrypting and packaging the byte character strings into the vehicle-mounted event data record message based on a hash encryption mode, packaging a plurality of designated fields in the byte character strings into a login message by the signal reporting system, uploading the login message to the internet of vehicle platform by the signal reporting system through a message queue telemetry transmission mode, and uploading the vehicle-mounted e