Intersection Driving Assistance Using Vehicle Shielding Time
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Solution Overview
Problem
Existing driving support systems face delays due to the increased amount of information required to process the interactions of multiple vehicles in a surrounding environment, leading to longer determination times for normative vehicle behavior.
Innovation Solution
A driving support method and device that reduce the amount of information to be processed by focusing on the shielding time of a second vehicle relative to a first vehicle, allowing the host vehicle to determine whether it can enter an intersecting point based on this shielding time and the required entry time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the driving support device determines risk of contact with all other vehicles based on currently detected surrounding environment, then the comprehensiveness of safety assessment is improved, but the processing time increases and driving support becomes delayed
Solution Approach 1:
The patent segments the assessment process by prioritizing vehicles based on their risk level. Instead of uniformly assessing all vehicles, the system divides them into high-risk vehicles (requiring detailed assessment) and other vehicles (using simplified assessment), thereby reducing overall processing time while maintaining safety comprehensiveness for critical cases
Solution Approach 2:
The patent applies different assessment qualities to different vehicles based on their local characteristics. High-risk vehicles receive comprehensive local assessment while other vehicles receive simplified assessment, optimizing the balance between safety and processing efficiency by matching assessment depth to actual risk levels
2Measurement precision
If the driving support device processes information from all detected other vehicles, then the accuracy of normative behavior determination is improved, but the device complexity and processing load increase
Solution Approach 1:
The patent extracts only the essential information needed for accurate normative behavior determination by identifying and prioritizing high-risk vehicles. This extraction approach reduces processing complexity by focusing computational resources on the most critical vehicles while maintaining determination accuracy through targeted assessment of key risk factors
Data Source
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AI summary
A driving support method supports driving of a host-vehicle (20) in a traveling scene in which a host-vehicle track (30) on which the host-vehicle (20) travels and a first other vehicle track (31) on which a first other vehicle (21) travels intersect with each other at an intersecting point (P). Whether the host-vehicle (20) can enter the intersecting point (P) is determined based on a shielding time (Tab) during which a second other vehicle (22) shields the first other vehicle track (31) to the intersecting point (P) and a required entry time (Tp) from when the host-vehicle (20) starts entering the intersecting point (P) to when the host-vehicle (20) finishes entering the intersecting point (P).