Trailer Parking Automation Using Reference Data
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Solution Overview
Problem
Current driver assistance systems for parking vehicles with trailers are inefficient, requiring constant driver intervention and struggling to accurately navigate complex parking spaces, especially when the trailer's dimensions and kinematics are not accounted for.
Innovation Solution
A method and device for automated parking that involves a learning mode where reference data is recorded during manual parking, allowing for subsequent automated parking with the trailer, using sensor data to adjust the driving path and account for trailer dimensions and kinematics, enabling partial or full automation even outside the sensor's detection range with a tolerance deviation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If automated parking is implemented without considering trailer dimensions and kinematics, then the parking process is simplified, but the navigation accuracy and reliability deteriorate
Solution Approach 1:
The system performs preliminary actions by recording reference data about the parking area and storing trailer-specific dimensions and kinematic parameters before the actual automated parking maneuver. This pre-processing of spatial information and vehicle parameters enables accurate navigation without requiring complex real-time calculations during parking execution.
Solution Approach 2:
The system changes parameters by adapting the driving path based on trailer-specific dimensions (length, width, wheelbase) and kinematic characteristics (articulation angle, turning radius). The control unit modifies navigation parameters dynamically to account for the trailer's physical constraints, ensuring accurate positioning while maintaining operational simplicity.
2Measurement precision
If driver intervention is required constantly during trailer parking, then navigation accuracy is maintained, but the extent of automation deteriorates
Solution Approach 1:
The system implements self-service by enabling the automated parking system to independently determine the driving path and execute the parking maneuver without constant driver intervention. The control unit autonomously processes reference data, trailer parameters, and real-time sensor information to navigate the vehicle-trailer combination into the parking space accurately.
Solution Approach 2:
The system uses feedback mechanisms where sensor data during the parking maneuver is continuously compared against the pre-recorded reference data and stored trailer parameters. The control unit adjusts the driving path based on this feedback, maintaining parking accuracy while reducing the need for manual correction by the driver.
3Measurement precision
If reference data is recorded during manual parking, then automated parking accuracy is improved, but the time required for setup increases
Solution Approach 1:
The system performs the time-consuming reference data recording and trailer parameter input as preliminary actions during manual parking operations. Once recorded, this spatial and vehicle-specific data is stored and reused for subsequent automated parking maneuvers, amortizing the initial time investment across multiple automated parking operations.
Solution Approach 2:
The system creates a digital copy of the parking area geometry and vehicle-trailer kinematics through reference data recording. This copied information serves as a reusable template for automated parking, eliminating the need to repeatedly measure and analyze the same parking space and vehicle parameters.
4Reliability
If the driving path is adjusted based on trailer dimensions, then parking reliability is improved, but the device complexity increases
Solution Approach 1:
The system manages complexity by changing parameters through software-based adjustments to the driving path based on trailer dimensions and kinematics. Rather than requiring complex mechanical adjustments or multiple specialized systems, the control unit computationally adapts the navigation parameters to account for the trailer's physical characteristics, maintaining reliability while minimizing hardware complexity.
Data Source
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AI summary
The invention relates to a method for the automated parking of a motor vehicle (1) with a trailer (19) in a parking space (15) using a driver assistance device (2) of the motor vehicle (1), with a) manual parking of the motor vehicle (1) in the parking space (15) by a driver of the motor vehicle (1) with an activated learning mode of the driver assistance device (2), wherein in the learning mode during parking a1) reference data about an area (12) of the parking space (15) are acquired and stored by a sensor device (3) of the driver assistance device (2) and a2) a reference target position (14) in which the motor vehicle (1) is parked in the parking space (15) is acquired and stored by the driver assistance device (2);wherein, in a subsequent b) automated parking of the motor vehicle (1) with the attached trailer (19) into this parking space (15) using the driver assistance device (2) in an operating mode of the driver assistance device (2) different from the learning mode, the stored reference data and the reference target position (14) are taken into account in order to improve the support of a driver of the motor vehicle (1) when parking with the trailer (19) into the parking space (15).