Blind-Spot Radar Trailer Angle Adjustment
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Solution Overview
Problem
Vehicle radar systems face interference and false warnings when detecting objects near a host-vehicle towing a trailer, particularly when turning, due to reflections from the trailer and its dynamic position affecting blind-spot detection zones.
Innovation Solution
A blind-spot detection system incorporating an angle-detector and radar-sensor, which determines the trailer-angle and adjusts the sensing-boundary to differentiate between trailer-related and external objects, reducing false alerts by defining a trailer zone and adjusting the blind-zone accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radar system uses a fixed blind-zone detection area, then the system structure is simple, but false warnings occur when towing a trailer due to reflections and dynamic position changes
Solution Approach 1:
The sensing boundary is made dynamic by adjusting it based on the detected trailer angle. The controller modifies the blind-zone parameters in real-time according to the trailer's position relative to the host vehicle, allowing the detection area to adapt to the trailer's dynamic orientation and prevent false warnings while maintaining system reliability
Solution Approach 2:
The system changes the parameters of the sensing boundary (position, shape, or size of the blind-zone) based on the trailer angle detected by the angle detector. By modifying these parameters dynamically, the system resolves the contradiction between maintaining simple structure and achieving reliable detection without false warnings
2Reliability
If the radar system detects all objects in the blind-zone, then comprehensive detection is achieved, but trailer-related objects are incorrectly identified as external objects causing false alerts
Solution Approach 1:
The blind-zone is segmented into a trailer zone and a non-trailer zone based on the detected trailer angle. The controller creates a distinct trailer detection area that is separated from the general blind-zone, allowing the system to differentiate between trailer-related objects and external objects, thereby improving identification accuracy without losing trailer zone information
Solution Approach 2:
Different detection criteria or zones are applied to different regions within the blind-zone. The area occupied by the trailer is given special consideration as a 'trailer zone' with different detection characteristics, allowing the system to maintain comprehensive detection while preventing false alerts by treating trailer-related detections differently
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
The system effectively discriminates between trailer-related and external objects, reducing false warnings and improving active safety features, especially when the host-vehicle is turning, and enhancing control for autonomous vehicles towing trailers.
Implementation Method 1
a radar-sensor configured to emit a radar-signal toward a defined-area proximate to the host-vehicle, and detect a reflected-signal arising from the radar-signal being reflected by detected-targets
Implementation Method 2
If the host-vehicle is towing a trailer, reflections of radar-signals by the trailer may interfere with the detection of a target that does not correspond to or is not associated with the trailer
Data Source
AI summary
A blind-spot detection system includes an angle-detector, a radar-sensor, and a controller. The angle-sensor is used to determine a trailer-angle relative to a host-vehicle of a trailer being towed by the host-vehicle. The radar-sensor is used to detect an other-vehicle present in a blind-zone proximate to the host-vehicle. The controller is in communication with the angle-detector and the radar-sensor. The controller is configured to adjust a sensing-boundary that defines the blind-zone based on the trailer-angle.