Adaptive Vehicle Parking Trajectory Planning
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Solution Overview
Problem
Existing parking assistant systems fail to adaptively select parking trajectories based on the traversability of the area opposite the parking space, potentially leading to unsafe operations and disruptions in traffic, especially in high-risk environments like public roads.
Innovation Solution
A method that assesses the traversability of the area using satellite-based positioning systems like GPS or Galileo, allowing for environment-dependent path planning to either avoid or drive over the area, with options for first and second trajectory plans tailored to safety and traffic conditions, and a driver assistance system to execute these plans through steering and braking controls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single fixed trajectory plan is used for parking, then the system is simple to implement, but it cannot adapt to different traffic environments and may cause safety issues or traffic disruptions
Solution Approach 1:
The system dynamically switches between a first trajectory plan (avoiding the opposite area) and a second trajectory plan (crossing the opposite area) based on real-time assessment of traffic conditions, road type, and safety parameters. This dynamic adaptation allows the parking system to optimize for both safety and efficiency depending on the environment.
Solution Approach 2:
The system changes key parameters such as trajectory selection, safety margins, and decision thresholds based on the assessed traffic environment. For example, it adjusts the acceptable risk level and path geometry parameters according to whether the area opposite the parking space is traversable or not.
2Productivity
If the vehicle crosses the area opposite the parking space to park, then parking speed is improved, but safety of occupants and other road users may be compromised
Solution Approach 1:
The system performs preliminary assessment of the traffic environment and pre-calculates both trajectory options before execution. It evaluates safety conditions, traffic density, and road characteristics in advance to determine which trajectory plan is appropriate, preventing unsafe maneuvers from being executed.
Solution Approach 2:
The system continuously monitors traffic conditions, vehicle position, and environmental parameters during the parking maneuver. Based on this feedback, it can switch between trajectory plans or abort the maneuver if safety conditions change, ensuring real-time safety adaptation.
3Reliability
If the vehicle avoids crossing the area opposite the parking space, then safety is improved, but parking time increases due to additional maneuvers
Solution Approach 1:
The system dynamically selects between avoiding and crossing the opposite area based on real-time safety assessment. When conditions permit, it uses the faster crossing trajectory; when conditions are unsafe, it switches to the safer avoidance trajectory, optimizing the balance between safety and time.
4Productivity
If trajectory planning does not consider the area opposite the parking space, then the system is simpler, but it may disrupt traffic or fail to find optimal parking paths
Solution Approach 1:
The system segments the parking environment into distinct zones (parking space, opposite area, adjacent lanes) and assesses each segment independently. This modular approach allows efficient evaluation of only relevant areas rather than analyzing the entire environment, improving computational efficiency.
Data Source
Figure 1
AI summary
The invention relates to a method for parking a vehicle (1) in a parking space (2) on a road (3) and/or for unparking a vehicle (1) out of a parking space (2) on a road (3), comprising the method steps: a) classifying whether a traversable or non-traversable surface (4) is present on a side of the road (3) opposite of the parking space (2) and b1) if the surface (4) is classified as non-traversable: executing a first path planning (I) for parking the vehicle (1), wherein traversing the surface (4) is avoided, and/or b2) if the surface (4) is classified as traversable: executing the first path planning (I) for parking the vehicle (1) or a second path planning (II) for parking the vehicle (1), wherein traversing of the surface (4) is permitted. The parking process can thus be accelerated - in the event of the presence of a traversable surface (4) - and the safety of the occupants of the vehicle (1) and other road users can be increased - in the event of the presence of a non-traversable surface (4).