Parking Path Generation Device Direction Switching
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Solution Overview
Problem
Automatic parking systems often require unnecessary travel when they fail to find a parking space in the initial search direction, leading to increased parking time and reduced driver convenience.
Innovation Solution
A parking path generation device that automatically switches the search direction based on the driver's intention and vehicle direction, using sensors like ultrasonic, lidar, and cameras to find a parking space, and generates a parking path when a space is successfully located, thereby reducing unnecessary travel and enhancing convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vehicle searches for parking spaces by one-time search in a fixed direction, then the search process is simple, but the vehicle must unnecessarily travel to search for parking spaces when the initial search fails
Solution Approach 1:
The patent implements dynamic search direction switching based on the vehicle's current traveling direction. When the vehicle fails to find a parking space in the initial search direction, the system automatically switches to search in the opposite direction, making the search process adaptive rather than fixed. This resolves the contradiction by maintaining simple one-time search operation while eliminating unnecessary travel through intelligent direction adjustment.
Solution Approach 2:
The system incorporates feedback mechanisms where the control unit monitors whether the parking space search unit successfully finds a parking space. Based on this feedback, the control unit determines whether to switch search directions. This feedback loop enables the system to avoid unnecessary traveling by detecting search failure and automatically adjusting the search strategy, thereby improving parking search efficiency without adding complex manual operations.
2Extent of automation
If the vehicle automatically controls steering and driving to follow a parking trajectory, then parking automation is achieved, but parking time increases due to unnecessary travel when parking spaces are missed
Solution Approach 1:
The system performs preliminary action by proactively switching search directions before the vehicle completes unnecessary travel. When the search unit fails to find a parking space in the initial direction, the control unit immediately determines to switch to the opposite direction and generates a new parking trajectory. This preliminary direction switching prevents the vehicle from following an extended unnecessary trajectory, thereby reducing overall parking time while maintaining full automation.
Solution Approach 2:
The patent changes the search direction parameter dynamically based on search results. The control unit modifies the trajectory parameters by switching from one search direction to the opposite direction when parking spaces are not found. This parameter change enables the automated system to adapt to missed parking opportunities without requiring manual intervention, thus reducing parking time while preserving automation extent.
3Ease of operation
If the parking space search unit searches in the forward direction only, then the search control is simple, but the vehicle misses parking spaces that are only accessible by reversing
Solution Approach 1:
The parking space search unit is designed with multi-functionality to search in both forward and reverse directions. The control unit determines the appropriate search direction based on the vehicle's traveling direction and parking space location. This universal search capability allows the system to handle various parking scenarios (forward-accessible and reverse-accessible spaces) without requiring different search units or complex manual control, thus maintaining ease of operation while achieving search direction flexibility.
Solution Approach 2:
The system implements inversion by switching search direction from forward to reverse when initially failing to find parking spaces. Instead of persisting in the ineffective forward direction, the control unit inverts the search approach by commanding the vehicle to reverse and search in the opposite direction. This inversion strategy maintains simple automated control while dramatically improving adaptability to different parking space configurations.
Data Source
AI summary
The present disclosure provides a parking path generation device, a system including the same, and a method of automatically parking a vehicle. The parking path generation device includes: a parking space search unit to search for a parking space in a forward direction or in a reverse direction, a control unit to control a search direction of the parking space search unit, and to determine whether the parking space search unit fails to find the parking space in the search direction, and a path generation unit to generate a parking path in the search direction when the parking space search unit successfully finds the parking space.