Vehicle Deviation Detection Using Map Data
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Solution Overview
Problem
Current driving assistance systems are inadequate in preventing accidents that occur when a vehicle deviates from its intended travel path, particularly in scenarios where obstacles like guardrails or sidewalk steps are not detected, leading to potential collisions or falls outside designated areas.
Innovation Solution
A driving assistance apparatus equipped with a determination unit and controller that uses map information and vehicle position data to assess the likelihood of deviation from a defined travel range, prompting warnings, restricting engine power, or applying brakes to prevent such deviations, even without driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If driving assistance systems use obstacle detection to prevent accidents, then collision accidents can be prevented, but accidents caused by deviation from travel path (e.g., falling off road, running on sidewalk) cannot be detected
Solution Approach 1:
The system transitions from detecting obstacles in the advance direction (one-dimensional approach) to determining whether the vehicle will deviate from the traveling possible range by projecting the vehicle position in the advance direction onto map information (two-dimensional approach). This dimensional change enables detection of potential deviations from the road or parking lot boundaries without requiring physical obstacles to be present.
2Reliability
If driving assistance systems rely on detecting fences or guardrails as obstacles, then collision risks can be mitigated, but deviations through gaps or undetected structures cannot be prevented
Solution Approach 1:
The system introduces map information as an intermediary between the vehicle and the actual boundary structures (fences, guardrails). Instead of directly detecting these structures, the system uses map data representing the traveling possible range to determine whether the vehicle will deviate from the road or parking lot, providing more reliable boundary protection.
3Ease of operation
If driving assistance systems use traditional obstacle detection methods, then simple collision scenarios can be handled, but complex accident forms (falling, running off road) cannot be appropriately coped with
Solution Approach 1:
The system achieves multi-functionality by using map information to determine the traveling possible range, which enables the same determination mechanism to handle various accident scenarios including falling off roads, running on sidewalks, and deviations from parking lots, without requiring separate detection systems for each scenario.
Data Source
AI summary
A driving assistance apparatus according to an embodiment includes a determination unit configured to determine whether or not there is a probability that a vehicle is deviated from a traveling possible range based on map information, position information of the vehicle, and information regarding an advancing direction of the vehicle, and a control information output unit configured to output first control information regarding at least one of warning a driver of the vehicle, restricting drive force of the vehicle regardless of an operation of the driver, and applying braking force to the vehicle regardless of an operation of the driver, in a case where the determination unit determines that there is a probability that the vehicle is deviated from the traveling possible range.