Parking Space Classification Using Curb Angle Detection
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Solution Overview
Problem
Existing driver assistance systems struggle to reliably and user-friendlyly support drivers when parking in spaces with curbs, as they often fail to prevent wheel damage during the parking process, especially when the angle over the curb is not sufficient, leading to aborted parking attempts and driver confusion.
Innovation Solution
A method that uses a vehicle-mounted sensor device to detect parking spaces with curbs, estimate a starting position, determine a driving trajectory over the curb, and classify the parking space based on the angle between the trajectory and the curb, allowing semi-autonomous parking only if the angle exceeds a predetermined limit value, thereby preventing wheel damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver assistance system offers the parking space to the driver before classification, then the user-friendliness is improved, but the risk of wheel damage increases if the angle is insufficient
Solution Approach 1:
The system performs preliminary classification of the parking space by estimating the starting position and determining the driving trajectory and angle before offering the parking space to the driver. This preliminary action ensures that only suitable parking spaces are offered, preventing wheel damage while maintaining user-friendliness.
2Measurement precision
If the system waits to classify the parking space after moving to the starting position, then the classification accuracy is improved, but the driver confusion increases as the space may already be offered
Solution Approach 1:
The system estimates the starting position and determines the driving trajectory and angle in advance, before the motor vehicle is moved to the starting position. This preliminary classification eliminates driver confusion while maintaining accurate classification by using predictive calculations rather than waiting for actual positioning.
Solution Approach 2:
The system dynamically adjusts the classification process by performing it at the optimal moment (before movement to starting position) rather than statically waiting until after positioning. This dynamic timing resolves the contradiction between early offering and accurate classification.
3Reliability
If the system aborts the parking process when the angle is insufficient, then the wheel damage is prevented, but the productivity decreases due to aborted attempts
Solution Approach 1:
The system performs preliminary classification to identify suitable parking spaces before the driver attempts parking. By pre-filtering out unsuitable spaces with insufficient angles, the system prevents aborted parking attempts and maintains high productivity while ensuring wheel damage prevention.
Data Source
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AI summary
The invention relates to a method for assisting a driver of a motor vehicle (1) during a parking maneuver into a parking space (10) having a curb (12), in which the parking space (10) having the curb (12) is detected in an area (7) surrounding the motor vehicle (1) by means of a vehicle-side sensor device (4), wherein a starting position (16) for the parking maneuver of the motor vehicle (1) into the parking space (10) is estimated in the area (7), a driving trajectory (19) leading over the curb (12) into the parking space (10) is determined from the estimated starting position (16), an angle (α) between the driving trajectory (19) and the curb (12) is determined, and the parking space (10) is classified as suitable for the parking maneuver if the angle (α) exceeds a predetermined limit value. The invention also relates to a driver assistance system (2) and a motor vehicle (1).