Vehicle Behavior Data Storage Control System
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Solution Overview
Problem
Existing vehicle behavior data storage systems struggle to accurately differentiate between normal and unexpected vehicle behaviors, leading to potential misclassification of driver-intended actions as abnormal, which complicates subsequent analysis.
Innovation Solution
A vehicle behavior data storage control system comprising a storage control device and electronic control units (ECUs) that determine unexpected behaviors through a multi-step process, including behavior acquisition, determination, and correction, ensuring only truly unexpected behaviors are recorded and stored for analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the storage control device records all behavior data that satisfies a predetermined condition (e.g., acceleration greater than or equal to a threshold), then the quantity of recorded behavior data increases, but normal driver actions are misclassified as abnormal behaviors, reducing the quality and accuracy of recorded data
Solution Approach 1:
The system segments the behavior determination process into multiple independent determination units. Each ECU that performs control actions makes its own determination about whether its control caused the observed behavior, and these determination results are combined by the storage control device. This segmentation allows the system to filter out normal driver actions at the source rather than relying on a single threshold-based filter, thereby maintaining data quality while still capturing sufficient abnormal behavior data.
Solution Approach 2:
The determination result from the ECU acts as an intermediary that mediates between the raw behavior data and the final storage decision. Instead of directly storing all behavior data meeting a threshold, the system introduces a determination result that indicates whether the behavior was caused by ECU control. This intermediary layer filters out normal driver actions while preserving abnormal behaviors, resolving the contradiction between data quantity and data quality.
2Device complexity
If the storage control device uses a simple threshold-based determination method, then the device complexity is reduced, but the accuracy of determining whether a behavior is truly unexpected deteriorates
Solution Approach 1:
The ECU performs self-determination about whether its control caused the observed behavior change. Each ECU monitors its own control actions and automatically determines whether a behavior deviation should be attributed to its control or to other causes. This self-service approach distributes the determination complexity across multiple ECUs rather than concentrating it in a single complex determination device, maintaining individual ECU simplicity while achieving system-level accuracy.
Solution Approach 2:
The system merges the determination capabilities of multiple ECUs into a unified determination result. Each ECU contributes its determination result about whether its control caused the behavior, and the storage control device combines these results to make the final storage decision. This merging allows the system to achieve high determination accuracy through collective intelligence while keeping individual components relatively simple.
Data Source
AI summary
A vehicle behavior data storage control system is disclosed. The system includes a storage control device and an electronic control unit (ECU). The storage control device determines whether or not an unexpected behavior has occurred based on a behavior data. When the ECU determines that a change in the behavior data is attributed to control performed by the ECU, the ECU transmits a determination result to an in-vehicle network. At a time when the storage control device determines that the unexpected behavior has occurred, the storage control device records the behavior data at this time in the memory. When determining that the unexpected behavior relates to the control performed by the ECU, the storage control device deletes or permits overwriting the behavior data stored in the memory.