Park Out Assist Collision Avoidance via Path Clearance Calculation
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Solution Overview
Problem
Current automatic parking systems lack effective mechanisms for determining clearance when exiting a parallel parking space, which can lead to collisions with obstacles or other vehicles during merging into traffic.
Innovation Solution
A vehicle parking assistance system that utilizes surround-view cameras, distance sensors, and a chassis control system to determine the vehicle's path and wheel angle, providing warnings and autonomous control to ensure safe egress from a parking spot by calculating the distance to adjacent vehicles and adjusting the steering wheel angle to avoid collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle uses present mechanisms for determining clearance, then the system complexity is reduced, but the reliability of collision-free egress is insufficient
Solution Approach 1:
The system performs preliminary path calculation and clearance assessment before the vehicle actually exits the parking space. The control unit calculates the egress path and determines clearance requirements in advance, allowing the driver to adjust the steering wheel angle beforehand to ensure safe exit without collisions.
Solution Approach 2:
The system provides feedback to the driver about the calculated clearance and egress path. The display unit shows clearance information and path guidance, enabling the driver to make informed steering adjustments. This feedback loop continues during the egress maneuver to ensure collision-free operation.
2Reliability
If the vehicle calculates precise clearance for exiting, then the safety is improved, but the time required for egress increases
Solution Approach 1:
The system calculates the egress path and clearance requirements in advance, before the vehicle begins moving out of the parking space. This preliminary calculation allows the driver to make steering adjustments beforehand, so that once the vehicle starts moving, the egress can proceed efficiently without delays for mid-maneuver calculations.
Solution Approach 2:
The system adapts the level of intervention based on the egress situation. For clear paths, the system provides minimal guidance allowing rapid egress. For constrained situations, the system activates more detailed path calculation and steering assistance, balancing safety with speed according to real-time conditions.
3Reliability
If the vehicle provides real-time warnings and autonomous control, then the driver safety is enhanced, but the ease of operation is reduced
Solution Approach 1:
The driver maintains control of the vehicle using their own steering input, while the system serves itself by automatically calculating paths and providing clearance information. The driver's steering wheel adjustments directly control the vehicle without the system needing to autonomously actuate steering, preserving driver agency while providing safety enhancements.
Solution Approach 2:
The display unit and warning system act as intermediaries between the vehicle's sensors and the driver. Rather than directly controlling the vehicle, the system processes sensor data and presents processed information to the driver, who then makes final control decisions. This intermediary layer enhances safety without completely removing driver control.
Data Source
AI summary
A method, including: detecting a distance between a vehicle and an object. The method also includes determining, based on the distance between the vehicle and the object, that a path of travel of the vehicle presents a risk of collision between the vehicle and the object. The method also includes causing at least one of a wheel angle, a vehicle drivetrain, and vehicle braking to be changed to reduce the risk of collision.