Vehicle Control Apparatus for Adaptive Inter-Vehicle Distance

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Solution Overview

Problem

Existing vehicle control systems fail to effectively adjust inter-vehicle distance and lane change timing based on the driving skill level of adjacent vehicles, leading to potential safety issues due to unpredictable driver behavior.

Innovation Solution

A control apparatus and method that acquire the driving skill level of adjacent vehicles using sensors and communication devices, adjusting inter-vehicle distance and lane change timing to ensure safe following and lane changes, particularly by determining skilled or non-skilled drivers through steering angle and acceleration variability analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If inter-vehicle distance is reduced to improve traffic flow efficiency, then productivity increases, but safety decreases due to unpredictable driver behavior of adjacent vehicles

Engineering Contradiction:
Improvetraffic flow efficiencyVSAvoidsafety
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

The system performs preliminary assessment of the adjacent vehicle driver's skill level before adjusting inter-vehicle distance. By evaluating driving behavior patterns in advance and categorizing drivers as skilled or non-skilled, the system proactively prepares appropriate safety margins, allowing reduced distance for skilled drivers while maintaining safety for non-skilled drivers.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically changes the inter-vehicle distance parameter based on the assessed driving skill level of the adjacent vehicle driver. When a non-skilled driver is detected, the system increases the safety margin (inter-vehicle distance); when a skilled driver is detected, the system reduces the distance to optimize traffic flow, thus adapting the distance parameter to the specific driving scenario.

Inventive Principle:
Principle #35Parameter changes

2Productivity

If lane change timing is adjusted to improve productivity, then traffic efficiency increases, but safety decreases due to sudden breaks or unstable vehicle behavior from non-skilled drivers

Engineering Contradiction:
Improvetraffic efficiencyVSAvoidsudden breaks or unstable vehicle behavior
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary evaluation of the adjacent vehicle driver's skill level before executing lane change maneuvers. By assessing driving behavior patterns in advance and identifying non-skilled drivers, the system proactively adjusts lane change timing to avoid potential conflicts, allowing more aggressive lane changes for skilled drivers while exercising caution with non-skilled drivers.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors the driving behavior of adjacent vehicles and uses this feedback to dynamically adjust lane change timing. When feedback indicates unstable behavior or sudden breaks from a non-skilled driver, the system modifies lane change decisions accordingly, creating a closed-loop control system that adapts to real-time driving conditions.

Inventive Principle:
Principle #23Feedback

3Reliability

If driving skill level assessment is implemented to improve safety, then reliability increases, but device complexity increases due to additional sensors and processing requirements

Engineering Contradiction:
ImprovesafetyVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system uses existing vehicle sensors (accelerometers, gyroscopes, steering angle sensors) for multiple purposes: both for basic vehicle control and for assessing driver skill level. By making these sensors multi-functional, the system avoids adding dedicated hardware for skill assessment, thereby improving safety through skill-level awareness while minimizing the increase in device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system performs self-assessment of driver skill level by analyzing its own sensor data without requiring external assessment systems. The vehicle's control unit independently evaluates driving behavior patterns using data from existing sensors, eliminating the need for complex external communication systems or additional assessment infrastructure, thus improving safety while keeping the system relatively simple.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11524681B2Control apparatus for vehicle, control method for vehicle, and computer-read able recording medium
Publication Date: 2022.12.13 SUBARU CORP
  • US11524681B2 patent drawing
  • US11524681B2 patent drawing
  • US11524681B2 patent drawing

AI summary

A control apparatus for a vehicle includes a skill level acquiring unit and an inter-vehicle distance controller. The skill level acquiring unit is configured to acquire a driving skill level of a driver of a first vehicle other than a second vehicle. The second vehicle is an own vehicle. The inter-vehicle distance controller is configured to control an inter-vehicle distance from the first vehicle to the second vehicle on the basis of the driving skill level acquired by the skill level acquiring unit.