Vehicle Driving Style Warning Using Past Driver Operation Data

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Solution Overview

Problem

Different drivers depress the accelerator and brake pedals in unique manners, leading to discomfort for vehicle occupants due to differences in driving styles.

Innovation Solution

A vehicle control device with a warning system that compares current driver operations to past driver data, providing warnings when deviations exceed thresholds, thereby adjusting driving style to match past drivers' patterns.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the system stores and compares past driver operation data with current driver operations, then the comfort of vehicle occupants is improved, but the device complexity increases

Engineering Contradiction:
Improveoccupant comfortVSAvoidcontrol system complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The system creates a copy of past driver operation data (accelerator and brake pedal operations) stored in memory, then compares this copied data with current driver operations to generate warnings. This copying approach enables comfort improvement without requiring complex real-time learning algorithms.

Inventive Principle:
Principle #26Copying

Solution Approach 2:

The system implements feedback by continuously comparing current driver operations against stored past operation patterns and providing warnings when deviations exceed thresholds. This feedback mechanism helps align current driving behavior with past patterns, improving occupant comfort through automated guidance.

Inventive Principle:
Principle #23Feedback

2Reliability

If the system provides frequent warnings when operation deviations exceed thresholds, then the alignment of driving style with past patterns is improved, but the driver may experience annoyance or distraction

Engineering Contradiction:
Improvedriving style alignmentVSAvoiddriver distraction
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The system applies partial action by providing warnings only when deviations exceed a predetermined threshold, rather than continuously monitoring all variations. This selective warning approach maintains reliability for significant deviations while avoiding unnecessary driver distraction from minor variations.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The warning system dynamically adjusts its behavior based on the degree of deviation from past operation patterns. By making the warning threshold adaptable and context-dependent, the system maintains reliable driving style alignment while minimizing harmful driver distraction through intelligent warning timing.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS12609023B2Vehicle control device
Publication Date: 2026.04.21 SUBARU CORP
  • US12609023B2 patent drawing
  • US12609023B2 patent drawing
  • US12609023B2 patent drawing

AI summary

A vehicle control device mountable on a vehicle includes a warning device that warns a current driver of the vehicle, and a control system including a processor and a memory that are communicably coupled. The control system obtains, a numerical value indicating an acceleration operation and/or a deceleration operation for each past driver of the vehicle, and the numerical value as past operation data. When an occupant other than the current driver matches any past driver, the control system sets the past operation data of the any past driver as reference data. The control system obtains a numerical value indicating an acceleration operation and/or a deceleration operation by the current driver as current operation data, and controls the warning device to warn the current driver when the current operation data deviates from the reference data by an amount more than a warning threshold.