Forward Parking Maneuver Control for Transverse Spaces
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Solution Overview
Problem
Current driver assistance systems for parking in perpendicular spaces require multiple vehicles to align optimally and can lead to collisions with objects on the opposite side, especially when parking forward, as they often necessitate driving past the space for measurement and involve rapid successive steering movements, which can be uncomfortable for drivers.
Innovation Solution
A method that uses environment sensors to detect the surroundings, allowing for a straight-ahead reverse movement followed by forward movements with circular arc segments and alignment to position the vehicle for direct parking, reducing the number of required maneuvers and avoiding collisions by terminating reverse movements at a predetermined distance from objects, thus enabling efficient forward parking in one or two moves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle drives past the parking space for measurement and alignment before parking, then the parking maneuver can be performed, but a large number of vehicles (more than four) are necessary to move the vehicle to the desired end position
Solution Approach 1:
The system performs preliminary detection of the parking space and surrounding objects using environment sensors before the vehicle begins its parking maneuver. This allows the control unit to calculate the optimal parking path in advance, eliminating the need for multiple adjustment maneuvers and reducing the total number of vehicles required from more than four to a maximum of four.
2Productivity
If rapid successive steering movements are used to align the vehicle for parking, then the parking maneuver can be completed, but the driver experiences uncomfortable steering movements
Solution Approach 1:
The control unit dynamically adjusts the steering angle based on the calculated parking path, enabling smooth and continuous steering movements rather than rapid successive adjustments. The system coordinates the steering movements with the vehicle's motion, allowing the vehicle to follow the desired trajectory comfortably while maintaining parking maneuver efficiency.
3Adaptability or versatility
If the vehicle is not optimally aligned before parking, then the parking maneuver can be attempted, but a large number of vehicles are necessary to correct the alignment and reach the desired end position
Solution Approach 1:
The system continuously monitors the vehicle's position and orientation during the parking maneuver using environment sensors and compares it with the calculated parking path. The control unit provides real-time feedback by adjusting the steering angle to keep the vehicle on the optimal path, eliminating the need for multiple correction maneuvers and reducing the total number of vehicles required.
4Ease of operation
If reverse movements are performed without distance limits, then the vehicle can be repositioned for parking, but collisions with objects on the opposite side may occur
Solution Approach 1:
The system performs preliminary detection of objects in the surrounding area using environment sensors before the vehicle begins its reverse movement. The control unit calculates the safe reverse path that maintains a predetermined distance from detected objects, preventing collisions before they can occur. This allows the vehicle to be repositioned safely for parking without collision risk.
Data Source
Figure 1.1~1.3
Figure 2
Figure 3
AI summary
The invention relates to a method for assisting a driver of a motor vehicle (1) during a parking manoeuvre into a transverse parking space (3), in which the motor vehicle (1) is parked forwards into the transverse parking space (3), comprising the following steps: (a) detection of the surroundings of the motor vehicle (1) with environment sensors and evaluation of data for detecting a transverse parking space (3) captured with the environment sensors and (b) execution of a reverse manoeuvre (15) aligned straight when the motor vehicle (1) drives at least partially into a transverse parking space (3), followed by a forward manoeuvre (17) which comprises a circular arc segment (23) with full lock of the steerable wheels in a first direction and a circular arc segment (27) with lock of the steerable wheels in a second direction opposite the first direction and an alignment straight line (29), or followed by a forward manoeuvre (39), with which the motor vehicle drives past at least some of the transverse parking space (3), a reverse manoeuvre (47), which ends with cornering with full lock of the steerable wheels in order to bring the motor vehicle (1) into a position which allows forward parking into the transverse parking space (3) in one manoeuvre and a subsequent forward manoeuvre (49) to park the motor vehicle (1) into the transverse parking space (3); or (c) execution of a reverse manoeuvre (47), which ends with cornering with partial or full lock of the steerable wheels in order to bring the motor vehicle (1) into a position which allows forward parking into the transverse parking space (3) in one manoeuvre, followed by a subsequent forward manoeuvre (49) to park the motor vehicle (1) in the transverse parking space (3), when the motor vehicle (1) has driven at least partially past the transverse parking space (3) and is aligned substantially transversely to the transverse parking space (3). The invention also relates to a device for carrying out the method.