Trailer Detection Zone Adjustment for Radar Blind Spot Accuracy
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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, especially when turning, due to reflections from the trailer and inadequate detection zones.
Innovation Solution
A trailer-detection system incorporating an angle-detector and radar-sensor, with a controller that determines the trailer's presence and size, adjusts the sensing boundary based on the trailer-angle, distinguishing trailer-related signals from other objects and adjusting the blind-zone accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the radar-system uses a fixed detection zone directly behind the host-vehicle, then the system structure is simple, but false warnings occur when the vehicle is turning because the trailer detection zone does not adjust to the turning angle
Solution Approach 1:
The patent applies the dynamics principle by making the trailer detection zone adjustable and dynamic rather than fixed. The controller modifies the detection zone parameters (position, size, orientation) based on the trailer angle and vehicle turning state, allowing the zone to adapt to different operating conditions and eliminate false warnings during turns
Solution Approach 2:
The patent changes the parameters of the detection zone (such as its boundaries, orientation angle, and coverage area) based on the detected trailer angle and vehicle state. By dynamically adjusting these parameters, the system maintains accurate trailer detection while avoiding false positives during turning maneuvers
2Reliability
If the radar-signal reflects off the trailer, then the trailer can be detected, but the reflection interferes with the detection of other targets that are not associated with the trailer
Solution Approach 1:
The patent segments the detection space by creating a dedicated trailer detection zone that is spatially separated from the general object detection area. By defining specific boundaries for the trailer zone based on trailer angle and position, the system can process signals within this zone differently, identifying them as trailer-related and preventing interference with other target detections
Solution Approach 2:
The controller acts as an intermediary that mediates between the raw radar signals and the final target identification. It uses the trailer angle information to create a virtual trailer detection zone, and signals falling within this zone are automatically attributed to the trailer, preventing false identification of other targets
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 solution enhances the accuracy of object detection, reduces false warnings, and improves active safety features by accurately differentiating trailer-related signals from other objects, even when the trailer is not directly behind the vehicle, and adjusts the detection zone dynamically.
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 from the radar-signal
Implementation Method 2
detect a reflected-signal from the radar-signal
Data Source
AI summary
A trailer-detection system includes a radar-sensor, an angle-detector, and a controller. The radar-sensor is used to detect an other-vehicle present in a blind-zone proximate to the host-vehicle. The angle-detector is used to determine a trailer-angle relative to a host-vehicle of a trailer being towed by the host-vehicle. The controller is in communication with the angle-detector and the radar-sensor. The controller is configured to determine a trailer-presence of the trailer based on the radar-signal and the trailer-angle.