Parking Steering Assistance System for Efficient Parallel Exit
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Solution Overview
Problem
Existing parking assistance systems often require multiple maneuvers to exit a parallel parking space inefficiently, with drivers neglecting their monitoring duties and complex sensor systems struggling to recognize moving objects, leading to potential collisions.
Innovation Solution
A parking-steering assistance system that detects activation, determines exit direction, and uses distance determination systems to measure rear and lateral obstacle distances, controlling the steering angle to maximize space utilization and minimize maneuvers by aligning wheels for parallel travel and reversing with maximum deflection against the parking direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fully automated parking assistance systems are used, then driver workload is reduced, but driver monitoring duties are neglected and collision risk increases
Solution Approach 1:
The system inverts the traditional automated parking approach by requiring the driver to actively control the vehicle while the system provides steering assistance. This reversal ensures the driver remains engaged and monitors the environment, eliminating the monitoring neglect problem while still reducing driver workload through automated steering support.
Solution Approach 2:
The system continuously provides feedback to the driver about the parking maneuver status, steering angle, and environmental conditions. This feedback loop keeps the driver informed and engaged, maintaining situational awareness and reducing collision risk while the system handles complex steering tasks.
2Difficulty of detecting and measuring
If complex sensor systems with redundancy are used, then detection capability is improved, but system complexity and cost increase
Solution Approach 1:
The system uses a single distance measuring device that performs multiple functions: detecting obstacles during parking maneuvers, determining parking space dimensions, and providing continuous distance information. This multi-functional approach eliminates the need for separate specialized sensors for different detection tasks, reducing system complexity while maintaining detection capability.
3Area of stationary object
If multiple parking maneuvers are required to exit a parking space, then space utilization is optimized, but maneuver time and complexity increase
Solution Approach 1:
The system dynamically adjusts the steering angle based on real-time distance measurements and the specific geometric configuration of the parking space and surrounding obstacles. This dynamic steering control enables the vehicle to execute optimized exit trajectories that maximize space utilization while minimizing the number of maneuvers required, adapting to each unique parking situation.
Solution Approach 2:
The system changes key parameters such as steering angle, vehicle speed, and trajectory in real-time during the parking maneuver based on measured distances and calculated optimal paths. These parameter adjustments enable efficient exit maneuvers that optimize both space utilization and maneuver time for each specific parking configuration.
Data Source
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AI summary
The invention relates to a parking steering assistance system and a method for assisting the process of driving a motor vehicle out of a parked position. A parking steering assistance system comprises: means (42) for detecting a system activation; means (47) for determining an intended direction for driving out of a parked position; means (50) for detecting a set direction of travel; a control unit (40) for activating at least one actuator (38) as a function of the set direction of travel, wherein a steering angle of steerable wheels (15) of the motor vehicle (1) can be set by means of the actuator (38), at least one distance measuring system (56), by means of which a rear obstacle distance (dhH) to a rear obstacle (5) which delimits the parking bay (2) in the reverse travel direction can be measured, wherein a lateral obstacle distance (dSH) to a lateral obstacle (6) which delimits the parking bay (2) on a side facing away from the roadway (3) can be determined by means of the at least one distance measuring system (56) or by means of a further distance measuring system, and the control unit (40) is designed such that, during a first movement of the process of driving out of the parked position, if said first movement is carried out in the reverse travel direction, said control unit (40) activates the actuator (38) in such a way that the steerable wheels (15) are firstly aligned for travelling parallel to the roadway (3) if and for as long as the rear obstacle distance (dhH) is longer, taking into consideration a rear safety margin (dhS), than a steering travel (dL), and subsequently, or otherwise, said control unit (40) effects a maximum steer movement of the steerable wheels (15) counter to the direction for driving out of a parked position, wherein the steering travel (dL) is the distance, parallel to the roadway (3), which can be covered taking into consideration the lateral obstacle distance (dsH), and if appropriate taking into consideration a lateral safety margin (dss), when the maximum steer movement counter to the direction for driving out of a parked position is effected.