Dynamic Reference Angle for Rear Cross Traffic Alert Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional rear cross traffic alert systems struggle with accurate detection and alert generation when a target vehicle approaches at an angle, leading to potential driver neglect and exclusion of relevant vehicles from the alert, particularly in diagonal parking scenarios.
Innovation Solution
A rear cross traffic alert control apparatus that dynamically sets a reference angle based on the vehicle's parking form, using sensing information and parking space data to determine the incidence angle and generate alerts only when the incidence angle exceeds the adjusted reference angle, ensuring accurate detection and alert generation regardless of parking orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional rear cross traffic alert apparatus uses a fixed reference angle for detection, then the system structure is simple, but the detection accuracy deteriorates when a target vehicle approaches at an angle similar to the host vehicle's parking orientation
Solution Approach 1:
The reference angle is changed from a fixed value to a dynamic value that varies according to the host vehicle's parking orientation. The system determines the parking form (parallel, perpendicular, or diagonal) and adjusts the reference angle accordingly, allowing accurate detection of target vehicles regardless of the host vehicle's parking angle
Solution Approach 2:
The system changes the detection parameter (reference angle) based on the parking form. By adjusting the reference angle parameter to match different parking orientations, the system maintains high detection accuracy without requiring complex additional sensors or hardware
2Reliability
If a conventional rear cross traffic alert apparatus uses a fixed detection criterion, then the control logic is simple, but the reliability deteriorates because target vehicles may be excluded from alert targets in diagonal parking situations
Solution Approach 1:
The detection criterion is made dynamic by adjusting the reference angle based on parking form. This allows the system to reliably detect target vehicles in all parking situations (parallel, perpendicular, diagonal) while maintaining reasonable control logic complexity
Solution Approach 2:
The system achieves universal applicability across different parking forms using a single detection mechanism. By making the reference angle adaptable to various parking orientations, one detection system serves multiple parking scenarios without requiring separate detection systems for each parking type
3Measurement precision
If the reference angle is adjusted according to parking form, then the detection accuracy for angled vehicles improves, but the device complexity increases due to additional sensing and processing requirements
Solution Approach 1:
The system achieves precise incidence angle measurement by changing the reference angle parameter according to parking form rather than adding complex measurement hardware. The parking form determination module uses existing sensors to identify parking type, and the reference angle adjustment module computes the appropriate angle, maintaining simplicity while improving precision
Data Source
AI summary
An apparatus for controlling a rear cross traffic alert includes: a parking form determiner that determines a parking form of a vehicle using at least one of sensing information or parking space information; a reference angle setter that sets a reference angle for controlling a rear cross traffic alert in accordance with the parking form; and a traffic alert controller that controls generation/non-generation of a traffic alert using a result of comparison between an incidence angle, which is formed by a movement path of another vehicle detected inside a rear cross traffic alert area of the vehicle and a longitudinal reference line of the vehicle, and the reference angle if a rear cross traffic alert start condition of the vehicle is satisfied.