Angle Parking Path Computation for Vehicle Attitude Alignment
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Solution Overview
Problem
Existing parking assistance devices cannot effectively assist in angle parking, especially when the initial vehicle position is not suitable or the vehicle attitude is not aligned with the parking space, as they rely on perpendicular parking methods and cannot compute paths for diagonally inclined parking spaces.
Innovation Solution
A parking assistance device that computes a pull-out path and a reachable path to guide the vehicle into a diagonally inclined parking space, using a pull-out path computing unit, candidate connection position setting unit, and parking path setting unit to independently determine the optimal parking path based on the vehicle's position and attitude, allowing for correct vehicle orientation and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If perpendicular parking method is used, then parking assistance can be provided for standard parking spaces, but it cannot be applied to diagonally inclined parking spaces
Solution Approach 1:
The patent changes the computational parameters from fixed perpendicular parking assumptions to variable angle parameters. The pull-out path computing unit calculates paths based on the actual angle of inclination between the road orientation and parking space orientation, allowing the system to adapt to different parking configurations while maintaining reliable path computation.
Solution Approach 2:
The patent creates a universal parking assistance system that can handle both perpendicular and angle parking scenarios through a single computational framework. The pull-out path computing unit serves multiple functions by computing paths for different parking orientations using the same basic algorithm, just with different angle parameters.
2Manufacturing precision
If guidance path is computed based on initial position and vehicle attitude, then parking path can be optimized for ideal starting conditions, but parking assistance fails when initial position is unsuitable
Solution Approach 1:
The patent performs preliminary computation of multiple candidate pull-out paths from the target parking position before determining the final parking path. By pre-calculating multiple possible pull-out trajectories and their corresponding reachable paths from various initial positions, the system can select the most appropriate path based on the actual initial vehicle position and attitude, ensuring accurate parking even from suboptimal starting conditions.
Solution Approach 2:
The patent introduces dynamic path selection where the system computes multiple candidate paths and selects the optimal one based on real-time vehicle position and attitude. The reachable path computing unit dynamically adjusts the path computation based on the vehicle's current state, allowing the system to adapt to different initial conditions while maintaining parking accuracy.
3Device complexity
If single parking path method is used, then computation is simple, but it cannot accommodate different parking orientations
Solution Approach 1:
The patent segments the parking path computation into distinct functional units: a pull-out path computing unit that handles the exit trajectory from the parking space, a reachable path computing unit that handles the approach to the parking space, and a parking path setting unit that integrates them. This segmentation allows each unit to be optimized for its specific function while collectively providing comprehensive support for different parking orientations.
Data Source
AI summary
A parking assistance device that can, when assisting in angle parking, park a vehicle at a position intended by a driver and in a correct vehicle attitude. The parking assistance device includes a pull-out path computing unit that computes a pull-out path for pulling a vehicle out of a parking space based on parking space information and constraint conditions regarding vehicle behavior, a candidate connection position setting unit that sets a plurality of candidate connection positions the pull-out path, a reachable path computing unit that computes a reachable path that allows the vehicle to reach one of the plurality of candidate connection positions from the initial position, and a parking path setting unit that sets a parking path by connecting the pull-out path and the reachable path. The pull-out path computing unit computes the pull-out path based on the angle of inclination between the road orientation and the parking orientation.