Oncoming Vehicle Intention Scoring for Safe Passing Control
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Solution Overview
Problem
Existing vehicle control methods do not account for the intention of the oncoming vehicle's driver, leading to unnecessary deceleration or braking when the vehicles can pass each other safely.
Innovation Solution
A vehicle control method and device that uses GPS, sensors, and a controller to calculate scores based on the oncoming vehicle's velocity and acceleration rate, integrating these to estimate the driver's intention and adjust the host vehicle's speed accordingly, avoiding sudden braking or acceleration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the host vehicle decelerates or stops when the passing route of the oncoming vehicle overlaps with the own lane, then the safety of the host vehicle is improved, but the comfort of the occupants deteriorates due to unnecessary braking
Solution Approach 1:
The patent replaces simple geometric overlap detection with a physics-based motion prediction system that calculates future positions using velocity and acceleration data. This substitution allows the system to distinguish between actual collision risks and false alarms, eliminating unnecessary braking while maintaining safety.
Solution Approach 2:
The system performs preliminary motion prediction by calculating the future passing route of the oncoming vehicle based on current velocity and acceleration. This preliminary action allows the host vehicle to make informed decisions before the actual passing maneuver occurs, avoiding reactive unnecessary braking.
2Object-affected harmful factors
If the host vehicle maintains current velocity when passing routes overlap, then the comfort of occupants is improved, but the safety may be compromised if the oncoming vehicle actually intends to pass
Solution Approach 1:
The system continuously monitors the oncoming vehicle's velocity and acceleration, updating the motion prediction in real-time. This feedback mechanism ensures that if the oncoming vehicle changes its intention (e.g., increases acceleration to pass), the host vehicle can respond appropriately, maintaining safety while avoiding unnecessary reactions to unchanged situations.
Solution Approach 2:
The patent replaces static lane overlap detection with dynamic motion prediction that incorporates physics-based calculations of future positions. This substitution enables the system to accurately assess whether maintaining current velocity is safe, reducing false safety warnings while preserving occupant comfort.
3Device complexity
If the system determines passing route overlap based on distance to center line, then the device complexity is reduced, but the measurement precision deteriorates leading to false positives
Solution Approach 1:
The patent changes the parameters used for passing route determination from static geometric data (distance to center line) to dynamic motion parameters (velocity, acceleration, and calculated future position). This parameter change significantly improves measurement precision while maintaining relatively simple control logic through straightforward physics calculations.
Data Source
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AI summary
The vehicle control device (1) sets a region including a stationary object on a road defined within a predetermined distance from the stationary object along an extending direction of the road, calculates a passing position at which a host vehicle and an oncoming vehicle pass each other in accordance with a velocity of the host vehicle and a position and a velocity of the oncoming vehicle, calculates a first score that is a larger value as the velocity of the oncoming vehicle is greater, calculates a second score that is a larger value as an acceleration rate of the oncoming vehicle is greater, integrates the first score with the second score so as to calculate an integration score, and causes the host vehicle to decelerate when the integration score is greater than or equal to a predetermined value or causing the host vehicle to keep the velocity or accelerate when the integration score is smaller than the predetermined value in a case in which the passing position is present within the region.