Vehicle Drive Assist Route Planning for Multi-Risk Avoidance
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Solution Overview
Problem
Existing vehicle drive assist systems struggle to formulate an optimal avoidance route when there are multiple risk areas on the road, as these areas involve varying levels of risk and diverse locations, making it difficult to ensure safe driving with minimal driver discomfort.
Innovation Solution
A vehicle drive assist apparatus equipped with a stereo camera, image processing unit, and travel control unit that recognizes objects, sets risk areas, determines risk levels, and calculates optimal route candidates to avoid these risks, adjusting route evaluation values based on the risk level encountered during travel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system sets multiple route candidates to avoid risk areas, then the safety is improved, but the device complexity increases due to multiple calculation components
Solution Approach 1:
The patent combines multiple functional components (object recognizer, risk area setter, risk level setter, route candidate setter, route evaluation value calculator, and vehicle travel route setter) into an integrated drive assist apparatus. This merging approach maintains the comprehensive safety functionality while reducing overall system complexity compared to having separate independent systems for each function.
Solution Approach 2:
The drive assist apparatus performs multiple functions within a single system: object recognition, risk area identification, risk level assessment, route candidate generation, route evaluation, and travel route determination. This multi-functionality improves safety coverage while avoiding the complexity of multiple separate specialized systems.
2Measurement precision
If the system calculates route evaluation values for multiple route candidates, then the route selection accuracy is improved, but the calculation time increases
Solution Approach 1:
The system pre-calculates route evaluation values for multiple route candidates before the vehicle actually needs to navigate. By preparing evaluation data in advance for various possible routes, the system ensures accurate route selection is ready when needed, reducing real-time calculation delays while maintaining high precision.
Solution Approach 2:
The route evaluation value calculation is performed dynamically based on current vehicle conditions and detected risk areas. The system adjusts which route candidates are evaluated and how their values are calculated based on real-time circumstances, optimizing the balance between calculation accuracy and computation time.
Data Source
AI summary
A vehicle drive assist apparatus is to be applied to a vehicle. The apparatus includes an object recognizer, a risk area setter, a risk level setter, a route candidate setter, a route evaluation value calculator, and a vehicle travel route setter. The object recognizer recognizes an object in front of the vehicle. The risk area setter sets, when small objects are around the object, a risk area including the small objects. The risk level setter sets a risk level for the risk area based on a distribution state of the small objects within the risk area. The route candidate setter sets patterns of route candidates for avoiding a risk resulting from the risk area. The route evaluation value calculator calculates a route evaluation value for each of the route candidates. The vehicle travel route setter sets, as a vehicle travel route, the route candidate having an optimum route evaluation value.