Vehicle Collision Warning Control Using Position-Based Approach Angles
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Solution Overview
Problem
Existing advanced driver assistance systems (ADAS) face inaccuracies in determining the approach angle and predicted position of a target vehicle, leading to erroneous or missed collision warnings due to errors in velocity detection by radar sensors.
Innovation Solution
A method and system that utilize radar sensors to detect the position of a target vehicle, set initial and subsequent detection positions, determine the approach angle based on these positions, and control collision warnings accordingly, compensating for velocity errors by recalculating angles and positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ADAS system determines approach angle and predicted collision position based on velocity detected by radar sensors, then the warning function can be activated, but measurement errors in velocity lead to increased errors in approach angle and collision position
Solution Approach 1:
The patent changes the calculation parameters from velocity-based to position-based. Instead of using velocity measurements to determine approach angle and collision position, the system uses sequential position detections to calculate displacement and derive approach angle through trigonometric relationships. This parameter transformation eliminates the accumulation of velocity measurement errors.
2Productivity
If velocity-based calculation is used to determine approach angle and collision position, then the system can provide real-time warnings, but errors increase leading to erroneous or missed warnings
Solution Approach 1:
The system implements feedback by continuously monitoring the target vehicle's position over time and using the change in position (displacement) to recalculate the approach angle. This feedback mechanism allows the system to adapt to the target vehicle's actual movement trajectory, improving accuracy while maintaining real-time warning capability.
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
Improves the accuracy of collision warnings by accurately determining the approach angle and predicted position of a target vehicle, reducing erroneous warnings and ensuring timely alerts are sent.
Implementation Method 1
detecting a position of a target vehicle and sequentially setting an initial detection position and a subsequent detection position of the target vehicle
Data Source
AI summary
A method of controlling a vehicle includes detecting a position of a target vehicle and sequentially setting an initial detection position and a subsequent detection position of the target vehicle, determining an approach angle of the target vehicle based on the initial detection position and the subsequent detection position, and controlling whether to send a warning of a collision based on the approach angle.