External Trajectory Storage for Vehicle Learning
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Solution Overview
Problem
Existing methods require each motor vehicle to learn separate trajectories for parking on private property, increasing the learning effort when multiple vehicles need to perform similar driving maneuvers.
Innovation Solution
A method where trajectory data sets are determined and stored externally, allowing guidance data records to be shared among vehicles, taking into account vehicle geometry parameters for accurate navigation and control, enabling vehicles to use learned trajectories regardless of their geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If each motor vehicle learns separate trajectories locally, then the trajectory data is available for immediate use by that vehicle, but the learning effort increases significantly when multiple vehicles need to perform similar driving maneuvers
Solution Approach 1:
The patent merges the trajectory learning function from individual vehicles to a centralized external storage device. Multiple vehicles can access and share learned trajectories from this central repository, eliminating redundant learning efforts. When one vehicle learns a trajectory to a destination, other vehicles can retrieve the same trajectory data without repeating the learning process, directly improving learning efficiency and reducing time loss.
Solution Approach 2:
The external storage device serves as a universal trajectory repository that can store and provide trajectory data for multiple different vehicles and destinations. Instead of each vehicle having vehicle-specific local storage, the system uses a multi-functional external storage solution that serves all vehicles in the network, allowing any vehicle to benefit from any learned trajectory regardless of which vehicle originally learned it.
2Adaptability or versatility
If trajectory data is stored externally, then multiple vehicles can share the same trajectory data sets, but additional systems are needed to manage and distribute the data
Solution Approach 1:
The external storage device acts as an intermediary between vehicles and trajectory data. Instead of vehicles directly exchanging data or each vehicle maintaining its own database, the external storage mediates all data access. It receives trajectory data from vehicles, manages storage, and distributes data to requesting vehicles, simplifying the overall system architecture while enabling versatile trajectory sharing.
Solution Approach 2:
The system uses copying to distribute trajectory data from the external storage device to multiple vehicles. When a vehicle needs a trajectory, the system copies the relevant data from the central storage to the vehicle's local memory for execution. This copying mechanism enables efficient data sharing without requiring complex real-time synchronization or direct peer-to-peer connections between vehicles.
3Measurement precision
If trajectories are learned separately for each vehicle, then the trajectory data is vehicle-specific and accurate for that vehicle's geometry, but the learning effort must be repeated for every new vehicle
Solution Approach 1:
The system stores not only trajectory path data but also vehicle-specific parameters such as wheelbase length and track width in the external storage device. When a vehicle requests a trajectory, the system retrieves both the path data and the original vehicle parameters, then adjusts the trajectory by applying scaling factors based on the ratio between the requesting vehicle's parameters and the original vehicle's parameters. This allows accurate adaptation of trajectories to different vehicle geometries while avoiding redundant learning.
Data Source
Figure 1
AI summary
A method for operating a motor vehicle (1), comprising the steps of: – ascertaining at least one path data record describing a respective travelled trajectory (9, 10) of the or a respective further motor vehicle (1), and sending the path data record to a vehicle-external memory device (26), – providing at least one guidance data record for the motor vehicle (1) from the memory device (26), each guidance data record being associated with one of the trajectories (9, 10) and being ascertained on the basis of the path data record describing the respective associated trajectory (9, 10), and – actuating the vehicle device (6, 7, 8) of the motor vehicle (1) on the basis of the provided guidance data record, or, if multiple instances of the guidance data records are provided by the memory device (26), an instance of the provided guidance data records that is selected in the vehicle, to output a driving instruction relating to the associated trajectory (9, 10) to a driver of the motor vehicle (1) and/or to perform at least one driving intervention.