Parking Assistance Device Repositioning Path Computation
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Solution Overview
Problem
Vehicles may deviate from ideal parking position and orientation due to sensor inaccuracies and steering delays, necessitating a system to reposition them correctly.
Innovation Solution
A parking assistance device with a positional deviation determination unit and a repositioning path computing unit that calculates a repositioning path to correct positional deviations, allowing the vehicle to be moved from the parking space to the road and back to the target position, ensuring correct alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle is parked along the guidance path using sensor data and steering control, then the parking operation can be automated, but the position and orientation of the vehicle may deviate from ideal ones due to sensor errors and steering delays
Solution Approach 1:
The system performs feedback by detecting the actual parking position using sensors, comparing it with the target position, and generating a reparking guidance path when deviation is detected. This closed-loop control enables the system to correct positioning errors automatically, resolving the contradiction between automation and precision.
Solution Approach 2:
The system pre-calculates a reparking guidance path based on the detected positional deviation before executing the reparking maneuver. By preparing the correction path in advance, the system ensures precise reparking while maintaining automated operation.
2Manufacturing precision
If the vehicle is reparked by calculating a reparking guidance path to correct positional deviations, then the parking precision is improved, but the parking operation time is extended
Solution Approach 1:
The system performs reparking only when positional deviation exceeds a threshold, rather than continuously adjusting. This partial action approach corrects significant errors while avoiding unnecessary reparking operations, thus balancing precision improvement with time efficiency.
3Adaptability or versatility
If the vehicle moves from the parking space to the road and back to correct positional deviation, then the reparking flexibility is increased, but the complexity of the parking system increases
Solution Approach 1:
The parking assistance system performs multiple functions: initial parking guidance, position detection, deviation calculation, and reparking guidance. By integrating these functions into a single universal system, the patent achieves reparking flexibility without proportionally increasing system complexity.
Data Source
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AI summary
An object of the present invention is to provide a parking assistance device that assists in reparking a vehicle that has been parked with its position and orientation deviated from ideal ones, by repositioning the vehicle such that the vehicle is at a correct position and in a correct orientation. A parking assistance device (1) of the present invention is adapted to assist in parking a vehicle (V) in a parking space (20) provided on one side of a road (21), and includes a parking path setting unit (14) that sets a parking path of from the initial position (P0) of the vehicle V on the road (21) to a target parking position (PI) in the parking space (20), a positional deviation determination unit (15) that determines whether there is any positional deviation between the vehicle (V) and the parking space (20) when the vehicle (V) has been parked along the parking path, and a repositioning path computing unit (16) configured to compute a repositioning path when a positional deviation is determined to be present.