Intersection Entry Guidance System for Right Turn Hazard Warning
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Solution Overview
Problem
Existing intersection entry systems struggle to effectively warn drivers of potential hazards during right turns at intersections, particularly due to limitations in detecting vehicles approaching from the left and right sides, which can lead to collisions.
Innovation Solution
A vehicle intersection entry guidance system that uses a combination of camera and radar-based object movement patterns, along with traffic light information, to classify intersection scenarios and provide scenario-specific warnings to the driver through a human-machine interface, utilizing existing sensors like front cameras and radars to determine safe right turn guidance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If proximity sensors or CCD cameras are used to detect approaching vehicles, then rear-end collision warning capability is improved, but the ability to detect vehicles approaching from left and right sides at intersections deteriorates
Solution Approach 1:
The patent combines camera-based traffic light recognition with radar-based object movement detection to create a comprehensive intersection monitoring system. The camera captures traffic light states while the radar detects vehicle movement patterns from all directions, merging optical and electromagnetic sensing capabilities to achieve both rear-end and lateral collision warning at intersections
Solution Approach 2:
The system makes existing sensors multi-functional by enabling the camera to not only detect traffic lights but also monitor intersection scenarios, and the radar to detect both approaching and lateral vehicles. This universal application of sensors eliminates the need for additional specialized sensors while expanding detection coverage
2Measurement precision
If additional sensors are installed to improve intersection hazard detection, then detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The system enables existing sensors to serve multiple purposes: the camera serves both traffic light recognition and intersection scenario classification, while the radar serves both distance measurement and lateral vehicle detection. This self-service approach allows existing components to compensate for each other's limitations without requiring additional specialized sensors
3Reliability
If comprehensive intersection monitoring is implemented, then collision warning reliability is improved, but computational load increases
Solution Approach 1:
The patent segments the intersection monitoring task into distinct classification scenarios (first scenario with verifiable traffic light patterns, second scenario with object movement patterns). This segmentation allows the system to process information in manageable categories and apply appropriate detection methods for each scenario, reducing overall computational complexity
Data Source
AI summary
An intersection right turn hazard warning method using an intersection entry guidance system of a subject vehicle reduces a collision hazard that may occur upon a right turn of the subject vehicle at an intersection. The method may include determining intersection information and vehicle right turn information from a vehicle information sensor, traffic light-blinking pattern information of left/right crosswalk traffic lights and a road-traveling traffic light from a first vehicle exterior information sensor. The method may also include determining longitudinal movement pattern information of an object at the intersection from a second vehicle exterior information sensor. The method May further include outputting an intersection scenario-specific warning to a human machine interface (HMI) and/or a surround view monitor (SVM) upon a right turn of the subject vehicle at the intersection according to an intersection scenario selected from a intersection situation classification table.