Vehicle Control Lever Handover Using Trajectory Alignment
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Solution Overview
Problem
Current systems lack a safe and efficient method to transfer vehicle control from automated to manual control using a control lever, potentially leading to dangerous situations if not aligned properly, as the vehicle may drift off course during transition.
Innovation Solution
The method involves graphically displaying the vehicle's actual speed and trajectory alongside the lever's position-based speed and trajectory on a display screen, ensuring alignment before transferring control, with confirmation through visual, tactile, or voice commands to ensure safe manual takeover.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If automated vehicle control is transferred to manual control without alignment verification, then control transfer speed is improved, but vehicle safety deteriorates due to potential drift off course
Solution Approach 1:
The system performs preliminary alignment verification by graphically displaying the control lever position and predicted vehicle trajectory against the actual vehicle trajectory before control transfer is finalized. This preliminary action ensures the vehicle is properly aligned with the intended path, preventing drift off course during the transition from automated to manual control.
2Reliability
If control lever position is verified against vehicle state before control transfer, then vehicle safety is improved, but control transfer complexity increases due to alignment verification requirements
Solution Approach 1:
The system introduces a graphical display interface as an intermediary between the control lever and the vehicle control system. This intermediary visually represents the control lever position and predicted trajectory, allowing verification of alignment without adding complex mechanical verification mechanisms. The graphical interface serves as a mediator that simplifies the verification process while maintaining safety.
3Measurement precision
If graphical display of actual and predicted trajectories is implemented, then control alignment accuracy is improved, but information processing requirements increase
Solution Approach 1:
The system creates a graphical copy or representation of the actual vehicle trajectory and the predicted trajectory based on control lever position. By displaying these trajectories visually rather than performing complex real-time computational analysis, the system achieves precise trajectory alignment verification with reduced computational energy consumption. The graphical copy allows intuitive verification without heavy processing requirements.
Data Source
AI summary
A method for transferring control of a vehicle from automated vehicle control by a control unit to manual vehicle control by a driver by a control lever, wherein the control lever is used at least to accelerate, brake, and steer the vehicle, wherein there is also at least one first display screen for displaying driving information, including at least an actual speed and an actual trajectory of the vehicle and a speed and a trajectory based on the actual position of the control lever, and wherein automated vehicle control is transferred to manual vehicle control when the actual speed of the vehicle corresponds graphically to the speed based on the actual position of the control lever and the actual trajectory of the vehicle corresponds graphically to the trajectory based on the actual position of the control lever on the first display screen.