Automated Parking Control Handover Before Spot Entry
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Solution Overview
Problem
Automated parking assist systems often require multiple maneuvers to guide a vehicle into a parking spot, consuming resources and time.
Innovation Solution
The system initiates handover of vehicle control to the automated parking assist system before reaching the parking spot, allowing early calculation and execution of a favorable trajectory, reducing the number of necessary parking maneuvers by guiding the vehicle to a first stop position from which further maneuvers can be optimized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the automated parking assist system waits until reaching the parking spot to calculate trajectory and perform maneuvers, then the system has complete information about the parking spot dimensions, but the number of parking maneuvers increases and time is consumed
Solution Approach 1:
The controller initiates trajectory calculation and vehicle guidance before the vehicle reaches the parking spot. This preliminary action allows the system to prepare the optimal trajectory in advance, reducing the number of maneuvers needed during actual parking execution.
Solution Approach 2:
The parking process is divided into distinct phases: approach phase (before reaching parking spot), handover phase (transferring control), and execution phase (performing maneuvers). This segmentation allows trajectory calculation to begin in the approach phase, improving overall efficiency.
2Reliability
If the controller calculates trajectory after handing over drive control at the parking spot, then the system ensures accurate spot detection, but multiple forward and backward maneuvers are required
Solution Approach 1:
The system performs preliminary trajectory calculation and vehicle positioning before the handover is complete. This allows the controller to have the trajectory ready when control is transferred, enabling more efficient execution with fewer maneuvers.
Solution Approach 2:
A first stop position is introduced as an intermediate position between the approach path and the final parking position. The vehicle is guided to this intermediate position first, from which the final parking maneuvers can be executed more efficiently.
3Device complexity
If the handover is initiated late when the vehicle is at the parking spot, then the system maintains simple control transition, but the trajectory calculation time is insufficient leading to multiple maneuvers
Solution Approach 1:
The controller starts trajectory calculation before the handover is initiated, using the approach phase as preparation time. This extends the calculation duration without complicating the handover process itself.
Solution Approach 2:
The trajectory calculation process begins during the approach phase and continues through the handover phase, ensuring continuous progress toward the final parking position without interruption or delay.
Data Source
AI summary
The disclosure relates to an automated parking assist system for parking a vehicle in a parking spot, comprising a controller configured to handover drive control from a user to the automated parking assist system; and to start an automated parking procedure; wherein the controller is configured to initiate the handover as the vehicle approaches the parking spot, and to finish the handover before the vehicle reaches the parking spot.