Adaptive Parking Trajectory Radius Optimization
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Solution Overview
Problem
Current parking assistance systems fail to adapt to the immediate environment of the vehicle, leading to collisions with objects on the side opposite the parallel parking space, especially on narrow streets, due to fixed cutting-in radii that cause the vehicle to swerve into the oncoming lane.
Innovation Solution
The method calculates a maximum cutting-in radius based on the vehicle's current position and surrounding environment, including objects on both sides of the parking space, to minimize swerving and prevent collisions, allowing for one-go parking or calculating multiple maneuvering moves if necessary, using sensors like ultrasonic, radar, or LIDAR to detect distances and directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a fixed cutting-in radius is used in parking assistance systems, then the steering process can be automated with a standardized path, but the vehicle swerves into the oncoming lane causing collisions with objects on the side opposite the parallel parking space
Solution Approach 1:
The patent applies dynamics by making the cutting-in radius adaptive rather than fixed. The system dynamically adjusts the cutting-in radius based on real-time detection of objects in the environment, particularly objects on the side opposite the parking space. This allows the automated steering system to maintain safety while preserving automation, resolving the contradiction between standardized automated paths and collision avoidance.
Solution Approach 2:
The patent changes the parameter of cutting-in radius from a fixed value to a variable parameter that is adjusted based on environmental conditions. By detecting objects and calculating safe trajectories, the system modifies the cutting-in radius parameter to prevent collisions while enabling automated parking, thus resolving the contradiction between automation and safety.
2Shape
If a small cutting-in radius is used to minimize the vehicle's cutting out when parking, then the vehicle stays closer to the parking space, but the front left corner of the vehicle swerves further into the oncoming lane increasing collision risk
Solution Approach 1:
The patent resolves this contradiction by changing the cutting-in radius parameter from small and fixed to variable and optimized. The system calculates an optimal cutting-in radius that balances two competing requirements: keeping the vehicle trajectory close to the parking space (minimizing cutting out) while preventing the front left corner from swerving into the oncoming lane. This parameter optimization eliminates collisions while maintaining efficient parking trajectories.
Solution Approach 2:
The patent employs feedback by using sensors to detect objects in the environment and feeding this information back to the trajectory calculation system. Based on this feedback, the system adjusts the cutting-in radius and steering commands in real-time, allowing the vehicle to maintain an optimal trajectory that avoids collisions while minimizing cutting out during the parking maneuver.
3Shape
If the vehicle drives further ahead to achieve a larger maximum cutting-in radius, then the swerving is minimized, but the distance to objects delimiting the parking space increases making collision avoidance more difficult
Solution Approach 1:
The patent resolves this contradiction through continuous feedback from sensors that monitor the vehicle's position and distance to parking space boundaries. Even when the vehicle drives further ahead to achieve a larger cutting-in radius and minimize swerving, the feedback system maintains accurate distance measurements, allowing the trajectory calculation to adjust and ensure collision avoidance while optimizing the parking path.
Data Source
Figure 1
Figure 2
Figure 3.1~3.3
AI summary
The invention relates to a method for assisting a driver while parking into a parallel parking space (5), wherein data of the surroundings of the parallel parking space (5) are detected when the vehicle drives past the parking space, and a suitable parking trajectory (1; 43) is calculated from the detected data. The parking trajectory (1; 43) is calculated such that a first pull-in radius, which is driven by the vehicle (3), is maximal so that a pull-out of the vehicle (3) is minimized when parking and a collision with objects bordering the parallel parking space (5) is prevented.