Parking Assistance System Trajectory Display for Blind Spot Obstacles
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Solution Overview
Problem
Current parking assistance systems (PAS) fail to display surrounding obstacles not visible to the driver, leading to potential collisions, especially in densely populated areas where parking spaces are insufficient, and do not operate effectively in low-speed conditions.
Innovation Solution
A PAS that includes a state sensing unit for vehicle speed and gear information, an obstacle sensing unit with cameras and ultrasonic sensors to detect obstacles, and a control unit that calculates and displays a parking trajectory, warns the driver, and controls steering, acceleration, and braking devices to prevent collisions, even in low-speed conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a parking trajectory is displayed using an AVM system, then the driver can see the parking path, but surrounding obstacles that are not visible to the driver are not displayed, leading to potential collisions
Solution Approach 1:
The system segments obstacle detection and information display by separating visible parking trajectory information from invisible obstacle information. Multiple sensors (ultrasonic, infrared, radar) are segmented to detect different types of obstacles, and the display is segmented to show both trajectory and obstacle locations separately, ensuring comprehensive information is provided without confusion.
Solution Approach 2:
The control unit acts as an intermediary that processes information from multiple sensors and synthesizes a comprehensive display. It mediates between the AVM system's trajectory display and the obstacle detection system, combining both types of information into a unified interface that shows the parking trajectory alongside detected obstacles, preventing information loss.
2Adaptability or versatility
If a PAS operates only when a sufficient parking space is secured, then automatic parking can be achieved, but the system does not operate in low-speed driving situations in densely populated areas
Solution Approach 1:
The system dynamically adjusts its operating conditions based on real-time sensor input. Instead of operating only in fixed parking scenarios, the control unit continuously monitors obstacle detection data and automatically activates assistance functions in low-speed driving situations when obstacles are detected, making the system adaptable to various densely populated area conditions.
Solution Approach 2:
The PAS is designed with multi-functionality to serve both automatic parking and low-speed driving assistance. The same sensor suite and control unit that enable automatic parking also detect obstacles during low-speed maneuvering in densely populated areas, allowing the system to provide collision prevention across multiple operating scenarios beyond just sufficient parking spaces.
3Loss of information
If the driver visually checks rear or side obstacles using mirrors, then the driver can see some obstacles, but blind spots in rear corner portions cannot be recognized
Solution Approach 1:
The system replaces the mechanical visual checking method with sensor-based detection. Instead of relying on the driver's physical line of sight through mirrors, ultrasonic sensors, infrared sensors, and radar automatically detect obstacles in blind spots and provide audio-visual warnings, eliminating the limitations of human visual inspection.
Solution Approach 2:
The system implements continuous feedback by having sensors constantly monitor blind spot areas and providing real-time warnings to the driver. When obstacles are detected in previously invisible areas, the system immediately alerts the driver through multiple channels, creating a closed-loop information system that compensates for the driver's inability to visually check certain areas.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents collisions by displaying and guiding the vehicle along a calculated trajectory, warning the driver of close obstacles, and automatically controlling the vehicle's movement, even when parking spaces are not secured, thereby enhancing safety in tight spaces.
Implementation Method 1
an obstacle sensing unit that photographs a forward, backward, or lateral side image of the vehicle and senses an obstacle present on a front, rear, or lateral side of the vehicle
Data Source
AI summary
Disclosed herein are a parking assistance system (PAS) and a method for controlling the same. The PAS according to the present disclosure includes a state sensing unit that senses a state of a vehicle including speed information and gear information of the vehicle, an obstacle sensing unit that photographs a forward, backward, or lateral side image of the vehicle and senses an obstacle present on a front, rear, or lateral side of the vehicle, and a control unit that calculates a parking trajectory based on information about the sensed state and obstacle of the vehicle, and displays the photographed forward or backward image including the calculated parking trajectory based on the sensed gear information of the vehicle, when a speed of the vehicle is less than a preset threshold value.