Parking Exit Assist Control With Driver-Triggered End Timing
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Solution Overview
Problem
Existing parking exit assist devices end parking exit assistance at a predetermined position, potentially before the vehicle reaches the desired exit completion position, leading to inconvenient or unwanted termination of assistance, especially in scenarios with remaining turning positions or longer distances.
Innovation Solution
A parking exit assist device that notifies the driver when specific conditions are met, allowing the parking exit assist control to be ended by a predetermined operation, such as accelerator or brake operation, ensuring the vehicle is within a threshold distance of the exit completion position and lacks any turning positions on the path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parking exit assistance ends at a predetermined position where the vehicle is closest to an object, then the vehicle can avoid collision with objects, but the assistance may end at a timing not desired by the driver, such as when there is still a long distance to the exit target position or when turning positions remain on the travel path
Solution Approach 1:
The patent applies dynamics by making the end permission condition dynamic rather than fixed. The system continuously evaluates multiple conditions (distance to exit completion position, presence of turning positions, distance to objects) and adjusts when end permission is granted based on the current state. This resolves the contradiction by allowing the vehicle to maintain reliable collision avoidance while adapting to driver needs and varying parking scenarios.
Solution Approach 2:
The patent changes parameters by introducing multiple threshold values (threshold distance to exit completion position, threshold distance to objects) and evaluating different state parameters (presence of turning positions, vehicle position relative to objects). This multi-parameter approach allows the system to balance collision avoidance reliability with driver convenience by granting end permission only when all parameters indicate it is safe and appropriate to end assistance.
2Ease of operation
If parking exit assistance continues until the vehicle reaches the exit completion position, then the driver receives continuous assistance, but the assistance may continue longer than necessary when the vehicle is already close to the exit and no turning positions remain
Solution Approach 1:
The patent applies preliminary action by evaluating end permission conditions in advance before the vehicle actually reaches the exit completion position. The system checks whether the vehicle has passed the closest point to objects, whether the distance to the exit completion position is within threshold, and whether turning positions remain. This allows the system to prepare for timely termination of assistance, reducing unnecessary assistance duration while maintaining driver convenience.
3Reliability
If the system allows ending assistance at the position closest to an object, then the vehicle can be controlled to avoid collision, but the remaining travel path may still contain turning positions or long distances to the exit target position
Solution Approach 1:
The patent changes parameters by introducing multiple evaluation criteria beyond just the distance to objects. The system now considers the distance to the exit completion position, the presence of turning positions on the remaining travel path, and the vehicle's position relative to objects. This multi-parameter approach ensures that assistance ends with both collision avoidance reliability and accurate exit position achievement.
Solution Approach 2:
The patent applies dynamics by making the end permission condition adaptive rather than fixed at a single predetermined position. The system dynamically evaluates whether ending assistance at the current position would leave turning positions or excessive distance to the exit completion position. This dynamic evaluation ensures both collision avoidance and accurate exit position achievement.
Data Source
AI summary
A parking exit assist device for a vehicle is configured to execute a parking exit assist control for moving a parked vehicle to a predetermined exit completion position along a travel path stored in advance. The parking exit assist device is configured to, when a specific condition is satisfied before the vehicle under the parking exit assist control reaches the exit completion position, notify an occupant of the vehicle that the parking exit assist control is allowed to be ended by a predetermined operation, and end the parking exit assist control when the predetermined operation is detected. The specific condition is a condition that there is no turning position on the travel path from a current position of the vehicle to the exit completion position and the distance from the current position of the vehicle to the exit completion position is equal to or less than a predetermined threshold.