Adaptive Collision Warning Distance for Parking Maneuvers
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Solution Overview
Problem
Current parking assistance systems provide inadequate and potentially late warnings during perpendicular parking, as the minimum collision distance for warnings is fixed, leading to costly collisions with adjacent vehicles, and existing methods for time-to-impact warnings have limited precision and are less effective at slow speeds.
Innovation Solution
The method varies the predefined minimum distance for collision warnings based on the type of parking space and the specific maneuver, allowing for a larger initial distance in perpendicular parking to prevent costly side collisions and reducing the warning distance in subsequent moves, using sensors to detect the parking space type and orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed minimum distance is used for collision warnings, then the system is simple to operate, but the warning may arrive too late during perpendicular parking maneuvers
Solution Approach 1:
The patent applies dynamics by making the minimum distance parameter variable rather than fixed. The control device adjusts the minimum distance dynamically based on the detected parking space type (longitudinal, perpendicular, or diagonal) and the current maneuver phase. This allows the warning system to adapt to different parking scenarios, providing timely warnings during perpendicular parking while maintaining simplicity in other contexts.
Solution Approach 2:
The patent changes the parameter of minimum distance based on parking space type and maneuver phase. Different minimum distance values are set for different situations: larger distances for perpendicular parking during initial approaches, smaller distances for longitudinal parking. This parameter adaptation resolves the contradiction by making the system reliable when needed without requiring constant complexity.
2Reliability
If a larger minimum distance is used for warnings, then collision risk is reduced, but the warning may be too early and cause unnecessary driver intervention
Solution Approach 1:
The patent changes the minimum distance parameter according to the parking space type and maneuver phase. For perpendicular parking, larger minimum distances are used during initial reverse moves to prevent side collisions, then reduced in subsequent moves when the vehicle is already positioned. For longitudinal parking, smaller minimum distances are used throughout. This dynamic parameter adjustment prevents both premature and late warnings.
Solution Approach 2:
The patent segments the parking maneuver into different phases (initial reverse move, subsequent moves, final positioning) and applies different minimum distance values to each phase. This segmentation allows the system to provide appropriate warning distances for each stage of the maneuver, optimizing both safety and efficiency.
3Adaptability or versatility
If the warning system uses fixed output signals for certain distances, then the system is easy to implement, but it cannot adapt to different parking situations and speeds
Solution Approach 1:
The patent changes the minimum distance parameter based on parking space type (longitudinal, perpendicular, diagonal) and maneuver phase. The control device contains predefined minimum distances for different situations and selects the appropriate value based on sensor input. This provides situational adaptability without requiring complex real-time calculations.
Solution Approach 2:
The patent creates a universal warning system that handles multiple parking space types and maneuver phases through a single control device. The system universally applies the principle of adapting minimum distance to current conditions, whether for longitudinal, perpendicular, or diagonal parking, making the system versatile without proportionally increasing complexity.
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
This approach provides timely and adaptive warnings, reducing the risk of collisions by increasing the initial minimum distance in perpendicular parking and adjusting it in subsequent moves, ensuring driver safety and minimizing damage, while maintaining sufficient space for door opening.
Implementation Method 1
the distance of the vehicle to objects is recorded with the aid of distance sensors
Data Source
AI summary
In a method for warning a driver of a vehicle about a collision with an object in the course a parking operation, the distance of the vehicle to at least one object in the environment of the vehicle is detected, and if a specified minimum distance is undershot, the driver is warned to stop the vehicle or the vehicle is stopped automatically. The specified minimum distance is varied as a function of the type of parking space and the executed parking maneuver.