Electronic Parking Assistance System Virtual Map Generation
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Solution Overview
Problem
Existing electronic parking assistance systems (EPAS) often fail to determine optimal parking positions in transverse or angled parking spaces, especially when adjacent vehicles are skewed or angled, leading to suboptimal or partially outside parking.
Innovation Solution
The EPAS generates a virtual map of the parking area, considering the parking positions of at least three adjacent vehicles, including those not directly adjacent, to ascertain a possible parking position that avoids incorrect or nonoptimal alignments and ensures a safe distance, using acquisition units like cameras or radar to analyze angular and longitudinal alignments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the EPAS considers only the parking positions of vehicles directly adjacent to the transverse parking space, then the device complexity is reduced, but the manufacturing precision of the parking position determination deteriorates
Solution Approach 1:
The system applies different levels of analysis to different vehicles: vehicles directly adjacent to the transverse parking space receive detailed angular alignment analysis, while vehicles further away are considered with less computational intensity. This local differentiation allows the system to maintain high accuracy for critical vehicles while reducing overall computational complexity.
Solution Approach 2:
The determination process is segmented into multiple stages: first identifying vehicles directly adjacent to the parking space, then analyzing their angular alignments, and finally synthesizing this information with positions of other adjacent vehicles. This segmentation allows complex analysis to be broken down into manageable steps, balancing accuracy and complexity.
2Manufacturing precision
If the EPAS analyzes parking positions of multiple adjacent vehicles including those not directly adjacent, then the parking position determination accuracy is improved, but the device complexity increases
Solution Approach 1:
The system dynamically adjusts the number of vehicles analyzed based on parking space characteristics and surrounding conditions. For standard transverse parking spaces with clearly aligned vehicles, the system may analyze fewer vehicles. For skewed or angled parking scenarios, the system increases the number of vehicles analyzed to ensure accurate boundary detection and optimal position determination.
Solution Approach 2:
The EPAS implements a dynamic analysis process where the scope of vehicle analysis is adjusted in real-time based on detected conditions. The system starts with a baseline analysis of directly adjacent vehicles and expands the analysis scope when angular misalignments or boundary uncertainties are detected, allowing adaptive complexity management.
3Manufacturing precision
If the EPAS uses angular alignment analysis of adjacent vehicles to determine parking position, then the parking position accuracy is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The system uses the parked vehicles themselves as intermediary reference objects for angular alignment measurement. Instead of requiring direct measurement of the empty transverse parking space boundaries, the EPAS measures the angular positions of adjacent vehicles relative to the parking space orientation, using these vehicles as natural reference markers that simplify the measurement process.
Solution Approach 2:
The EPAS creates a virtual model of the parking area that includes the positions and angular orientations of adjacent vehicles. This virtual copy allows the system to perform angular alignment calculations in a simplified digital environment rather than dealing with complex physical measurements, reducing the difficulty of detection and measurement while maintaining accuracy.
Data Source
AI summary
A method for assisting a parking procedure of a motor vehicle in an available parking space. An electronic parking assistance system (EPAS) is operated to: acquire information related to a parking area having multiple parking spaces arranged adjacent and parallel to one another; generate a virtual map including positions of an available space, two flanking vehicles parked on opposed sides of the available space, and at least one additional vehicle parked alongside one of the two flanking parked vehicles on a side opposite from the available space; and determine a parking position in the available space considering the respective positions of the flanking vehicles and the additional vehicle. A vehicle steering system and/or braking system and/or powertrain is operated by the EPAS to guide the motor vehicle to the parking position.