Parking Trajectory Selection Based on Lane Boundary Geometry
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Solution Overview
Problem
Current driver assistance systems for parking vehicles are not sufficiently reliable in identifying and navigating multi-storey car parks and parking lots, often requiring cumbersome and time-consuming maneuvers, especially when dealing with complex layouts of rows and lanes.
Innovation Solution
A method using environmental data from sensors and a digital map to determine whether a tramline is bounded on one or both sides by parking spaces, outputting specific travel trajectories to guide the vehicle centrally between rows for parallel parking and closer to rows for perpendicular parking, facilitating the detection and approach of free parking spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driver assistance systems use general parking detection methods, then they can detect parking spaces, but they are not sufficiently reliable in identifying and navigating multi-storey car parks and parking lots with complex layouts
Solution Approach 1:
The parking area is segmented into multiple rows of parking spaces with associated tramlines. The system divides the navigation task into row-level decisions, where each row is evaluated independently for available parking spaces, simplifying the overall navigation complexity while improving reliability.
Solution Approach 2:
The system introduces a digital map dimension that stores pre-defined structural information about parking areas, including row configurations and tramline layouts. This additional dimensional layer of information enhances reliability by providing contextual guidance beyond simple sensor detection.
2Productivity
If the system provides detailed navigation guidance for different tramline configurations, then parking efficiency improves, but the system complexity increases
Solution Approach 1:
The system generates different travel trajectories based on local conditions - specifically whether a tramline is bounded on one side or both sides by parking spaces. This local adaptation approach improves productivity by optimizing the parking maneuver for each specific configuration without requiring a completely different system architecture.
Solution Approach 2:
The trajectory generation is dynamic and adaptive, selecting between first and second travel trajectories based on real-time evaluation of the tramline configuration. This dynamic behavior allows the system to handle various parking area layouts efficiently while maintaining manageable system complexity through rule-based decision logic.
3Measurement precision
If the system evaluates tramline boundaries using environmental data, then parking space detection accuracy improves, but the time required for navigation planning increases
Solution Approach 1:
The system performs preliminary evaluation of environmental data to determine tramline boundary conditions before finalizing the navigation plan. By assessing whether tramlines are bounded on one or both sides in advance, the system achieves accurate detection while streamlining the subsequent trajectory selection process, reducing overall planning time.
Data Source
AI summary
The invention relates to a method for assisting a driver in parking a motor vehicle (1) comprising the steps of: positioning the motor vehicle (1) on a parking area (8) which has a plurality of parking space rows (9), each with a plurality of parking spaces (10) for the motor vehicle (1), and a plurality of driving lanes (11) for approaching the parking space rows (9) (S1); receiving environmental data describing the environment (4) of at least one of the driving lanes (11) by means of a receiving device (3) of the motor vehicle (1); determining whether the at least one of the driving lanes (11) is bounded on one side or on both sides by one of the parking space rows (9) based on the received environmental data by means of an evaluation device (5) of the motor vehicle (1) (S2); and outputting a first driving trajectory (16) for a journey along the at least one driving lane (11).if at least one of the driving lanes (11) is bounded on both sides by one of the parking space rows (9), and issuing a second driving trajectory (15) for a journey along the at least one driving lane (11), if at least one driving lane (11) is bounded on one side by one of the parking space rows (9).