Vehicle Collision Avoidance Warning Timing Based on Approach Direction

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing vehicle collision avoidance systems fail to provide timely warnings for drivers when approaching intersections, as they do not account for the direction from which a crossing vehicle is approaching, leading to potential collisions and improper stopping within the intersection.

Innovation Solution

A vehicle collision avoidance system that includes units to acquire and analyze the driving states of both vehicles, determine the approach direction and collision point, set a stop point, and provide warnings to prevent collisions by allowing the vehicle to stop before the intersection, using vehicle-to-vehicle communication and image processing to adjust the stop point based on the number of lanes and lane position.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a warning is given at the same timing for vehicles from both right and left sides, then the warning system is simple, but the subject vehicle may stop within the intersection due to longer distance to right-side vehicles

Engineering Contradiction:

Improvewarning system complexityVSAvoidcollision avoidance reliability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The system changes the warning timing parameter based on the approach direction of the crossing vehicle. When a vehicle is detected from the right side, the warning is given earlier than when detected from the left side, compensating for the longer stopping distance required to reach the stop line before the intersection

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the warning timing is adjusted based on approach direction, then collision avoidance reliability is improved, but the warning system complexity increases

Engineering Contradiction:

Improvecollision avoidance reliabilityVSAvoidwarning system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The warning timing is made dynamic rather than fixed, adjusting automatically based on the detected approach direction of the crossing vehicle. The system dynamically selects between early warning (for right-side vehicles) and standard warning (for left-side vehicles) timing

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses feedback from the vehicle detection unit to determine the approach direction of crossing vehicles, and based on this feedback, adjusts the warning timing accordingly. The detection result feeds back to the warning control unit to modify the warning behavior

Inventive Principle:

Principle #23Feedback

3Device complexity

If the stop point is set without considering the number of lanes, then the system is simple, but the stop point may be inaccurate leading to improper stopping position

Engineering Contradiction:

Improvestop point calculation complexityVSAvoidstop point position accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The stop point calculation incorporates the number of lanes as a variable parameter. The stop point is set at different distances from the intersection based on whether there is one lane or multiple lanes, ensuring accurate positioning at the appropriate stop line

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9815461B2Vehicle collision avoidance supporting apparatus and vehicle collision avoidance supporting method

Publication Date: 2017.11.14 HONDA MOTOR CO LTD

AI summary

After determination of from which side, right or left, a second vehicle is approaching, a position of a collision point is determined, a position of a stop point is set from the determined collision point, and a warning is given at a position and timing of a warning point which is set to allow a first vehicle to stop before the set stop point.