Rearward Collision Warning Range Adjustment by Target Direction
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Solution Overview
Problem
Existing vehicle rearward warning systems face errors due to discrepancies between the detected location of a target vehicle and the collision warning range, leading to inaccurate collision warnings.
Innovation Solution
A vehicle rearward warning system that includes a detection unit to locate the target vehicle, an estimation unit to estimate its traveling direction, and a setting unit to adjust the collision warning range based on the estimated direction, using radar sensors and calculation units to determine and adjust boundaries dynamically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the collision warning range is maintained at a fixed size, then the system can detect all potential collision targets, but false alarms increase when target vehicles leave the warning range
Solution Approach 1:
The collision warning range boundaries are made dynamic by adjusting them based on the estimated traveling direction of the target vehicle. When the target vehicle is estimated to be moving away from the subject vehicle, the boundary is adjusted to reduce the warning range, thereby eliminating false alarms while maintaining detection accuracy for relevant targets.
Solution Approach 2:
The system changes the parameter of the collision warning range (its boundary position) based on the traveling direction parameter of the target vehicle. By modifying the warning range parameters according to the target's motion state, the system achieves both accurate collision warning and reduction of false alarms.
2Object-generated harmful factors
If the collision warning range is reduced when target vehicle leaves, then false alarms are reduced, but detection coverage may be compromised
Solution Approach 1:
The system applies different warning range configurations to different spatial regions based on the target vehicle's traveling direction. When the target is moving away, the warning range is reduced in that specific direction, while maintaining coverage in other directions where collision risk remains. This localized adjustment reduces false alarms without compromising overall detection coverage.
3Measurement precision
If the boundary is adjusted based on lateral distance, then detection precision is improved, but system complexity increases
Solution Approach 1:
The system uses feedback from the detected lateral distance and estimated traveling direction to automatically adjust the collision warning range boundary. This feedback mechanism enables precise target location detection and dynamic boundary adjustment without requiring complex manual configuration, as the system self-regulates based on real-time target information.
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 system reduces the collision warning range accurately when the target vehicle leaves the warning range, enhancing the detection of target vehicles and reducing false alarms by dynamically adjusting the warning boundaries based on the target's movement and distance.
Implementation Method 1
The detection unit may be connected to a radar sensor positioned at the rear of the subject vehicle and configured to detect the location of the target vehicle positioned behind or on a side of the subject vehicle.
Data Source
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AI summary
The present invention provides a vehicle rearward warning system that includes a detection unit detecting a location of a target vehicle, an estimation unit estimating a traveling direction of the target vehicle based on the location of the target vehicle detected by the detection unit, and a setting unit setting a collision warning range in respect of a subject vehicle and changing the collision warning range based on the traveling direction of the target vehicle estimated by the estimation unit.