Vehicle Obstacle Avoidance Routing Around Oncoming-Lane Blind Spots
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Solution Overview
Problem
Existing travel assistance systems fail to consider blind spot areas on the oncoming lane when generating travel routes to avoid obstacles, leading to inappropriate route generation and driver anxiety.
Innovation Solution
A travel assistance device that integrates sensors and navigation systems to detect blind spot areas on the oncoming lane, adjusts the avoidance section and route curvature in response to potential obstacles, and prioritizes smoothness or safety based on the risk of objects entering the blind spot area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a travel route is generated to avoid a traveling avoidance region using virtual obstacles, then the subject vehicle can avoid the obstacle, but the system cannot detect moving objects in blind spot areas on the oncoming lane
Solution Approach 1:
The system performs preliminary detection of blind spot areas on the oncoming lane before generating the avoidance route. By identifying potential blind spot regions in advance and incorporating them into the route planning, the system prevents information loss about moving objects that could enter the subject vehicle's path during avoidance maneuvers.
2Reliability
If the avoidance section is extended to account for blind spot areas, then the system can detect potential moving objects, but the travel route becomes more complex and longer
Solution Approach 1:
The system applies local quality by selectively extending the avoidance section only in specific regions where blind spots are detected on the oncoming lane, rather than uniformly increasing the avoidance section throughout the entire route. This targeted approach maintains route simplicity while ensuring adequate coverage of high-risk areas.
3Reliability
If the travel route considers blind spot areas on the oncoming lane, then the route becomes safer, but the route generation time increases
Solution Approach 1:
The system implements partial action by considering blind spot areas only when they are actually detected on the oncoming lane, rather than always performing full blind spot analysis for every avoidance route. This conditional approach reduces unnecessary computational overhead while maintaining safety when blind spots are present.
Data Source
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AI summary
A travel assistance device includes a traveling boundary acquisition unit (101), a surrounding object acquisition unit (102), an obstacle determination unit (104), an avoidance determination unit (105), a blind spot determination unit (108), an avoidance section setting unit (107), and a vehicle control unit (112). The traveling boundary acquisition unit (101) is configured to acquire lane information around a subject vehicle. The surrounding object acquisition unit (102) is configured to acquire surrounding object information about an object around the subject vehicle. The obstacle determination unit (104) is configured to determine whether or not an obstacle hindering a travel of the subject vehicle on a subject lane where the subject vehicle travels is present, based on the lane information and the surrounding object information. The avoidance determination unit (105) is configured to determine whether or not the subject vehicle is allowed to avoid the obstacle by a steering control in an avoidance direction to avoid the obstacle based on the lane information when the obstacle is determined to be present by the obstacle determination unit. The blind spot determination unit (108) is configured to determine whether or not a blind spot area as a blind spot from the subject vehicle is present on an oncoming lane opposed to a travel direction of the subject vehicle when the subject vehicle is determined to be allowed to avoid the obstacle. The blind spot area is located in the avoidance direction with respect to the subject lane. The avoidance section setting unit (107) is configured to set an avoidance end position of an avoidance section to execute an avoidance control including the steering control in the avoidance direction according to a result of the determination of whether or not the blind spot area is present. The vehicle control unit (112) is configured to generate a travel route for the subject vehicle to travel from an avoidance start position to the avoidance end position of the avoidance section.