Autonomous Vehicle Collision Avoidance for Long Vehicles
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Solution Overview
Problem
Existing autonomous vehicle driving safety systems face challenges in accurately controlling braking for long vehicles, leading to potential collisions due to overly sensitive or erroneous braking, especially when there is no avoidable area for steering around the host vehicle's path.
Innovation Solution
An autonomous vehicle control system that uses sensor information to determine if another vehicle satisfies specific length and width criteria, calculates an impact point, and sets the vehicle as a target, determining collision types and indices to decide between a first avoidance mode with basic functions or a second mode with additional deceleration capabilities based on the likelihood of collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If braking is performed based on the rear center point of a long target vehicle, then the braking control becomes more sensitive and responsive, but the likelihood of erroneous braking control increases
Solution Approach 1:
The patent applies local quality by differentiating the target point selection based on the specific characteristics of the target vehicle. For long vehicles (length ≥ 5m), the front center point is selected as the target point, while for short vehicles, the rear center point is used. This localized adaptation of the control parameter (target point position) to match the specific condition (vehicle length) resolves the contradiction by ensuring both responsiveness and accuracy for each vehicle type.
2Reliability
If additional deceleration quantity is applied for long target vehicles, then collision avoidance capability is improved, but the risk of overly sensitive or erroneous braking control increases
Solution Approach 1:
The patent implements preliminary action by pre-establishing classification criteria for target vehicles based on length thresholds (≥5m for long vehicles). The system proactively identifies and categorizes target vehicles before executing braking control, selecting appropriate target points and deceleration quantities in advance. This preliminary classification ensures that the correct braking parameters are applied from the outset, preventing erroneous braking while maintaining effective collision avoidance.
3Ease of operation
If braking control is based on the rear of a long target vehicle, then the control system operates with standard parameters, but the braking quantity may be insufficient when no avoidable area exists
Solution Approach 1:
The patent applies dynamics by making the braking control parameters adaptive rather than fixed. The system dynamically adjusts the target point position (front center vs. rear center) and deceleration quantity based on the real-time classification of the target vehicle's length. This dynamic adaptation allows the control system to maintain simplicity in operation while ensuring sufficient braking quantity by automatically selecting appropriate parameters matched to the specific situation.
Data Source
AI summary
An apparatus for controlling autonomous driving of a host vehicle is introduced. The apparatus may comprise a processor, and memory storing instructions, when executed by the processor, may cause the apparatus to receive sensor information from at least one of a plurality of sensors mounted on the host vehicle, determine, based on the sensor information, whether another vehicle, traveling within a threshold distance from the host vehicle, satisfies a target condition, based on the other vehicle satisfying the target condition, set the other vehicle as a target vehicle, determine an avoidance condition between the target vehicle and the host vehicle, and control, based on the avoidance condition, the autonomous driving of the host vehicle to operate in a first avoidance mode or in a second avoidance mode.