Vehicle contour-aware collision avoidance for close passing
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Solution Overview
Problem
Current driver assistance systems for vehicle parking and low-speed maneuvers assume a rectangular vehicle shape, failing to account for the actual non-rectangular body contours, which limits the ability to pass objects closely and results in unnecessary distance warnings, leading to reduced system acceptance by drivers.
Innovation Solution
The method accounts for the vehicle's non-rectangular body shape by using a simplified 2D polygon or detailed 3D model to detect surroundings and calculate evasive paths, incorporating distance sensors and automatic steering/braking interventions to avoid collisions, while considering the driver's reaction time and vehicle dynamics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the vehicle body is assumed to be a rectangular box in driver assistance systems, then the system calculation is simplified, but the system cannot accurately assess collision risks during close passes and generates unnecessary distance warnings
Solution Approach 1:
The vehicle body contour is segmented into multiple coordinate points representing different body parts (front, rear, sides, corners). These discrete points are detected and processed individually to reconstruct the actual non-rectangular vehicle shape, enabling precise collision risk assessment without requiring complex continuous geometric models.
Solution Approach 2:
A simplified digital representation (polygon or 3D model) of the vehicle body contour is created based on detected coordinate points. This digital copy accurately reflects the actual vehicle geometry including recessed areas and non-rectangular features, allowing the system to perform precise collision calculations using the copied geometry rather than assuming a rectangular shape.
2Ease of operation
If the vehicle body contour is accurately modeled using multiple coordinate points, then the ability to pass objects closely is improved, but the device complexity and calculation requirements increase
Solution Approach 1:
The continuous vehicle body contour is divided into discrete coordinate points at key locations (front, rear, sides, corners). This segmentation allows the system to represent complex geometries using simple point data that can be processed efficiently, balancing accuracy with computational feasibility.
Solution Approach 2:
The vehicle body representation is extended from a 2D rectangular assumption to a multi-dimensional coordinate system that captures the actual 3D geometry of the vehicle. By using coordinate points in multiple dimensions, the system accurately models non-rectangular shapes including recessed areas, enabling precise collision assessment for close passing maneuvers.
3Reliability
If distance sensors and automatic interventions are implemented, then collision avoidance capability is improved, but the system complexity and cost increase
Solution Approach 1:
Multiple detection functions are merged into a single coordinate detection system that simultaneously captures vehicle body contours and identifies surrounding objects. The same sensor network and processing architecture handle both vehicle geometry representation and obstacle detection, reducing overall system complexity while maintaining comprehensive collision avoidance capability.
Solution Approach 2:
The detection and calculation system is designed to perform multiple functions: representing vehicle body geometry, detecting surrounding objects, calculating collision risks, and generating avoidance maneuvers. This multi-functional approach eliminates the need for separate specialized systems, reducing complexity while improving reliability through integrated operation.
Data Source
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AI summary
The invention relates to a method for assisting a driver of a vehicle (1) during a maneuver, in which at least the surroundings of the vehicle (1) in front of the vehicle (1 ) in the direction of travel are detected in order to detect objects (15, 23, 25) which would collide with the vehicle (1) if the vehicle (1 ) remained in the same direction of travel. A required steering action and/or a required braking action is indicated to the driver in the event of an imminent collision with an object (15, 23, 25) and/or an automatic steering action and/or an automatic braking action is performed in order to prevent a collision with the object (15, 23, 25). The contour (19) of the vehicle body (1 ) is taken into account in order to determine whether a collision with an object (15, 23, 25) is imminent.