Perpendicular Parking Trajectory Control for Safe Corrective Moves
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Solution Overview
Problem
Existing parking assistance systems struggle to reliably prevent interference between a vehicle performing corrective movements in a perpendicular parking space and following traffic, especially when the following traffic has accelerated or fails to stop.
Innovation Solution
The method involves determining a trajectory for the vehicle that includes parking and corrective movements, and defining a blocking line that runs longitudinally through the vehicle. The system checks if the blocking line will be cleared during non-final parking movements, and if so, outputs a signal to prevent clearing the blocking line before the last parking movement, thus maintaining the traffic space occupied.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle enters far into the perpendicular parking space during parking movement, then the parking position is reached more efficiently, but the driver's view of following traffic is blocked and interference with following traffic may occur
Solution Approach 1:
The system performs preliminary analysis of the parking trajectory to determine if corrective movements are required before the vehicle actually enters the parking space. By pre-calculating the trajectory and identifying the need for corrective movements in advance, the system can prevent the vehicle from entering too far into the parking space, thereby maintaining the driver's view of following traffic and preventing interference.
2Productivity
If the vehicle clears the blocking line during non-final parking movements, then the traffic space is released for following traffic, but corrective movements cannot be performed safely
Solution Approach 1:
The system continuously monitors the vehicle's position relative to the blocking line and the progression of parking movements. By providing feedback on whether the vehicle has cleared the blocking line during non-final movements, the system can detect potentially unsafe situations and trigger appropriate responses, such as alerting the driver or adjusting the trajectory, to ensure corrective movements can be performed safely if needed.
3Productivity
If the following traffic accelerates or fails to stop when the blocking line is cleared, then traffic flow is maintained, but interference with the parking vehicle performing corrective movements occurs
Solution Approach 1:
The system takes preliminary anti-action by preventing the vehicle from clearing the blocking line during non-final parking movements when corrective movements are required. This preventive measure ensures that the traffic space remains occupied, which naturally causes following traffic to slow down or stop, thereby eliminating the harmful effect of interference before it can occur.
Data Source
AI summary
A parking operation of a vehicle from a starting position to a parked position in a perpendicular parking space includes determining a trajectory into the parked position with at least one parking movement and potentially one or more corrective movements which includes a change of direction. A blocking line is defined running in a straight line and longitudinally through the vehicle when positioned in the starting position. If the trajectory provides for one or more corrective movements, then it is determined whether the blocking line will be cleared by the vehicle during a nonfinal parking movement or a nonfinal corrective movement. If the blocking line will be cleared then a signal is output for interrupting the trajectory. The interruption can include an alert and/or a determination of a corrected trajectory in such a way that clearing the blocking line by the vehicle during the nonfinal parking movement is prevented.