A method and device for analyzing data of a new energy vehicle acceleration pedal stroke value, a brake pedal stroke value and a vehicle speed

By filtering feature fields based on actual vehicle operation and instrument reference data in new energy vehicles, the problem of binary custom format parsing relying on vehicle manufacturer protocols was solved, achieving efficient and accurate data parsing and meeting the judicial needs of accident investigation.

CN122176818APending Publication Date: 2026-06-09XIAMEN MEIYABAIKE INFORMATION SECURITY RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN MEIYABAIKE INFORMATION SECURITY RES INST CO LTD
Filing Date
2026-01-22
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The binary custom format parsing of accelerator pedal travel value, brake pedal travel value, and vehicle speed data in existing new energy vehicles relies on the vehicle manufacturer's protocol, resulting in low parsing efficiency and poor timeliness, which cannot meet the judicial requirements of accident investigation.

Method used

By conducting actual vehicle operations on a rotating test bench or closed road, and combining instrument reference data, fields that meet the characteristics in a custom binary data block are selected to infer the data storage location and parameters. Data is collected using a general OBD diagnostic instrument, and multiple rounds of verification are conducted to ensure the accuracy and uniqueness of the analysis results.

Benefits of technology

It achieves efficient and accurate parsing without relying on vehicle manufacturer protocols, improves the timeliness of accident investigations and the judicial validity of electronic evidence, is compatible with multiple vehicle brands, lowers hardware barriers and costs, and facilitates large-scale application.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a method and apparatus for analyzing accelerator pedal travel value, brake pedal travel value, and vehicle speed data of new energy vehicles. This method does not rely on internal vehicle manufacturer protocols. By placing the vehicle on a rotating test bench or closed road, simulating states such as stationary, cruise control, and pedal fully depressed, the method uses the vehicle speed displayed on the instrument panel and the pedal travel range (0~100%) as reference data to filter fields that meet certain characteristics from a custom binary data block: in the stationary state, the "0 value field" is located; in cruise control, the vehicle speed coefficient k is deduced; and in the pedal fully depressed state, the "field that gradually transitions to 0x64" is located. The data storage location is confirmed through multiple rounds of verification. This invention offers high parsing efficiency (≤2 hours), small error (vehicle speed deviation ≤±0.5km / h), and can meet the electronic data evidence collection needs of traffic accident investigations, improving the judicial validity of evidence. It also has strong compatibility and can be integrated into in-vehicle evidence collection products.
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