Dynamic Collision Avoidance Control for Lateral Vehicle Risks
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Solution Overview
Problem
Conventional collision avoidance systems for vehicles are unable to execute optimal control strategies to prevent side collisions, as their control methods remain static and do not adapt to changing vehicle states, potentially leading to ineffective collision avoidance.
Innovation Solution
A collision avoidance apparatus that includes a laterally-existing movable object detector, a side collision determination section, a passage and avoidance determination section, and an accelerated/decelerated state controller, which dynamically adjusts the vehicle's state to either accelerate or decelerate based on real-time risk assessments and target deceleration calculations to ensure collision avoidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a control for decreasing the speed of the own vehicle is executed when a possibility that the other vehicle collides with the own vehicle at the front-lateral side portion is determined to be high, then the collision risk at the front-lateral side is reduced, but the other vehicle may approach the rear-lateral side portion during the passage of time, reducing collision avoidance effectiveness
Solution Approach 1:
The patent implements dynamic control by continuously monitoring the relative positions and velocities of the own vehicle and other vehicles, and adjusting the control strategy in real-time. The control apparatus dynamically switches between different control modes (front-lateral collision avoidance control and rear-lateral collision avoidance control) based on the changing travelling states, ensuring optimal collision avoidance effectiveness throughout the interaction.
Solution Approach 2:
The patent employs feedback mechanisms by continuously acquiring travelling state information of the own vehicle and other vehicles, evaluating collision risks based on this feedback, and adjusting the control strategy accordingly. The control apparatus uses feedback from position and velocity measurements to determine whether to maintain current control or switch to an alternative control mode, ensuring adaptive response to changing conditions.
2Ease of manufacture
If the vehicle control contents remain unchanged after starting the control for avoiding collision, then the control system is simple to implement, but the travelling states of the own vehicle and the other vehicle change from moment to moment, making the executed control not always optimal
Solution Approach 1:
The patent implements periodic evaluation of collision risk by continuously monitoring travelling states at regular intervals and reassessing whether the current control strategy remains optimal. The control apparatus periodically checks if alternative controls should be executed based on updated position and velocity information, balancing the simplicity of continuous monitoring with the need for adaptive control adjustments.
Data Source
AI summary
A collision avoidance apparatus capable of executing an appropriate vehicle control in order to avoid a collision between an own vehicle and a movable object is provided. A collision avoidance apparatus for avoiding a collision between an own vehicle and a movable object includes: a laterally-existing movable object detector for detecting for a movable object that approaches from a direction lateral to the own vehicle; a side collision determination section for determining whether or not a risk that the own vehicle and the movable object collide with each other is high, when the laterally-existing movable object detector has detected the movable object that approaches from the direction lateral to the own vehicle; a passage and avoidance determination section for determining, when the risk that the own vehicle and the movable object collide with each other is determined to be high, whether or not a possibility that a collision between the own vehicle and the movable object can be avoided by the own vehicle passing in front of the movable object, is high; and an accelerated state/decelerated state controller for controlling the own vehicle to be in one of an accelerated state and a decelerated state, according to a determination result of the passage and avoidance determination section.