Parking Assistance Trajectory Visualization for Obstacle Avoidance
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Solution Overview
Problem
Existing parking assistance devices struggle to display accurate trajectories for both forward and reverse movements of a vehicle when parking, making it difficult for drivers to avoid obstacles during the process.
Innovation Solution
A parking assistance device that displays both the forward and reverse trajectories of a vehicle superimposed on its surroundings, allowing drivers to visualize potential collision points and select a suitable reverse start position more effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If only the reverse trajectory with fixed maximum steering angle is displayed, then the device complexity is reduced, but the driver cannot check both forward and reverse trajectories simultaneously making it difficult to avoid obstacles
Solution Approach 1:
The patent merges the display of forward trajectory and reverse trajectory into a single unified display interface. The forward trajectory (from current position at current steering angle) and reverse trajectory (from current position at different steering angle) are superimposed on the same image of surroundings, allowing drivers to compare both paths simultaneously without needing separate displays or systems.
Solution Approach 2:
The patent adds the dimension of temporal sequencing to the trajectory display. Instead of showing only one trajectory at a time, the system displays multiple trajectories (forward and reverse) in different visual dimensions (different colors, line styles, or positions) on the same spatial plane, enabling comprehensive visualization without increasing physical device complexity.
2Reliability
If multiple trajectories at different steering angles are displayed, then the driver has more information for safe parking, but the display complexity and information processing increase
Solution Approach 1:
The patent applies local quality by displaying trajectories with different visual characteristics based on their purpose. The forward trajectory and reverse trajectory are distinguished through local visual properties (such as different line types, colors, or thicknesses) rather than requiring completely separate display systems, making the information distinguishable while maintaining system simplicity.
Solution Approach 2:
The system performs preliminary calculation and display of multiple trajectories (forward and reverse) before the driver actually executes the parking maneuver. By showing both trajectories in advance with different steering angles, the driver can plan the parking path safely without real-time complexity during execution.
Data Source
AI summary
When a host vehicle moves forward, a drawing arithmetic unit and a display of an ECU which display the image of the surroundings of the host vehicle display a trajectory when the host vehicle moves forward from the current position at the current steering angle and trajectories when the host vehicle is reversed from the current position at a steering angle different from the current steering angle so as to be superimposed on a bird's-eye image.