Blind Spot Radar Detection of Trailers and Coaches
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Solution Overview
Problem
Current radar-based blind spot warning systems cannot effectively detect large-sized trailers or coaches due to differences in radar signal reflection, leading to failure in identifying these vehicles nearby.
Innovation Solution
A method using on-vehicle radar devices to detect proximity by identifying a first radar reflection point outside the blind spot zone, setting an object area, and determining a second radar reflection point inside the zone to identify a target-type vehicle based on positional relationships and specific conditions, such as distance and height, to accurately detect trailers or coaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a radar-based blind spot warning system uses conventional detection methods, then it can detect regular vehicles effectively, but it fails to detect large-sized trailers or coaches due to different radar signal reflection characteristics
Solution Approach 1:
The system changes detection parameters by identifying specific radar reflection point patterns - using the spatial distribution and positional relationships of multiple reflection points rather than single-point detection, which allows differentiation between regular vehicles and target-type vehicles based on their unique reflection characteristics
Solution Approach 2:
The system adds a spatial dimension to detection by analyzing the distribution of multiple radar reflection points in three-dimensional space (position, distance, elevation angle) rather than relying on conventional two-dimensional detection, enabling identification of vehicles with different structural characteristics
2Adaptability or versatility
If the radar system expands detection coverage to include areas outside the conventional blind spot zone, then it can detect target-type vehicles, but the system complexity increases due to multiple detection zones and reflection point analysis
Solution Approach 1:
The system segments the detection process into distinct functional modules: a detection unit that identifies multiple reflection points, a determination unit that analyzes their spatial relationships, and a classification unit that identifies target-type vehicles. This segmentation manages complexity by dividing the overall function into manageable, specialized components
Solution Approach 2:
The system introduces an intermediary analysis layer that processes raw radar reflection data through spatial relationship analysis before final vehicle type determination. This intermediary step (analyzing positional relationships between reflection points) simplifies the overall system by creating a structured intermediate representation of the detection data
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
Enables the radar-based blind spot warning system to effectively detect and alert drivers of the presence of large-sized trailers or coaches, improving safety by accurately identifying these vehicles in proximity.
Implementation Method 1
a radar apparatus 14 to transmit a radar signal and receive a reflected wave
Implementation Method 2
detecting a first radar reflection point reflected by an object
Data Source
AI summary
A method of identifying target-type vehicle through radar based blind spot warning (BSW) system of a host vehicle, comprising: detecting a first radar reflection point reflected by an object, said first radar reflection point being outside the BSW zone of the BSW system; setting an object area based on the distribution of groups of the first radar reflection point; assuming the object to be other vehicle based on the positional relationship between the object area and the BSW zone; detecting a second radar reflection point inside the BSW zone; and determining the other vehicle to be the target-type vehicle based on the detected second radar reflection point. The target-type vehicle is trailer or coach.