Auto-parking Device Adaptive Path Planning
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Solution Overview
Problem
Existing auto-parking systems are inflexible and require the vehicle to be positioned at a specific starting point, limiting their adaptability to varying environments and increasing the risk of collisions during parking, especially in tight spaces.
Innovation Solution
An auto-parking device equipped with a vehicle status sensing unit, image acquisition unit, range sensing unit, and processing unit that calculates and controls a parking path, allowing for adaptive parking in various initial positions and environments, using formulas to determine optimal steering and braking commands for parallel and back-in parking modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a fixed parking path is provided, then the parking operation can be automated, but the system becomes inflexible and cannot adapt to variable initial positions and environmental conditions
Solution Approach 1:
The system dynamically adjusts the parking path based on real-time detection of the vehicle's initial position, parking space dimensions, and surrounding obstacles. The processing unit calculates and generates adaptive parking paths rather than executing fixed pre-programmed sequences, allowing the system to respond flexibly to varying conditions while maintaining automation.
Solution Approach 2:
The system changes operational parameters (steering angle, speed, braking force) in real-time based on feedback from sensors and the calculated parking path. The processing unit continuously adjusts control commands to throttle, brake, and steering mechanisms according to the specific geometry of the parking space and vehicle position, enabling adaptation to different scenarios.
2Device complexity
If the driver must stop at a specific position for auto-parking, then the control system is simplified, but the system becomes limited and requires precise initial positioning
Solution Approach 1:
The system performs preliminary detection of the vehicle's current position, orientation, and surrounding environment before generating the parking path. The processing unit uses this advance information to calculate an appropriate parking maneuver that accommodates the actual initial conditions, eliminating the need for the driver to manually position the vehicle at a specific spot.
Solution Approach 2:
The system replaces manual driver positioning operations with automated sensor-based detection and computer-generated path planning. Instead of requiring mechanical precision in driver positioning, the system uses electronic sensors and algorithms to determine the vehicle's state and compute the optimal parking trajectory, thereby increasing flexibility without proportionally increasing complexity.
3Ease of operation
If manual parking operations are used, then the driver has full control, but the process becomes tedious and increases the risk of collisions
Solution Approach 1:
The system continuously monitors the vehicle's position, speed, and surrounding obstacles during the parking maneuver using sensors. This real-time feedback is fed back to the processing unit, which adjusts the control commands to maintain safe distances from obstacles and ensure precise positioning, thereby reducing collision risk while automating the tedious manual operations.
Solution Approach 2:
The system performs the parking maneuver autonomously once activated, with the vehicle's control systems (throttle, brake, steering) self-regulating based on the calculated path and sensor feedback. The driver simply needs to initiate the process and can monitor via display, freeing them from the tedious repeated forward-backward-steering actions while minimizing collision risk through automated precision control.
Data Source
AI summary
An auto-parking device installed on a vehicle comprises a vehicle status sensing unit for detecting a state of a vehicle, an image acquisition unit for capturing vehicle outside image, a range sensing unit for measuring the space, a processing unit for receiving states of the vehicle from the vehicle status sensing unit, receiving environmental states from the image acquisition unit and range sensing unit, calculating a parking path based on parallel parking or back-in parking and then controlling the vehicle steering, throttle and brake via a driving control unit to automatically park the car into the space as per the planned parking path.