Vehicle Return Control Using Stored Route and Initial Stop Position
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Solution Overview
Problem
Existing vehicle control systems become complicated when attempting to safely and autonomously move a host vehicle from a position that obstructs another vehicle's path to a position that does not, requiring continuous collision risk determination using various sensors.
Innovation Solution
A travel assistance device comprising a detection result storage unit, a moving object recognition unit, a route storage unit, an initial stop position determination unit, and a vehicle control unit that autonomously moves the host vehicle to an initial position based on stored detection results and vehicle information, simplifying the determination process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the host vehicle autonomously moves to a position that does not hinder the travel of another vehicle using continuous sensor monitoring and collision risk determination, then the safety of the maneuver is improved, but the system complexity increases significantly
Solution Approach 1:
The system stores the initial stop position and surrounding environment detection results before the host vehicle starts moving. When the vehicle needs to yield to another vehicle, it can autonomously return to the pre-stored initial position without needing continuous complex collision risk determination, as the safe position has already been identified and recorded in advance
Solution Approach 2:
The system creates a copy of the initial stop position information and surrounding environment data in the detection result storage unit. This stored information serves as a reference that eliminates the need for real-time complex sensor processing and collision risk analysis during the autonomous movement back to the initial position
2Reliability
If the host vehicle stops on the path of an approaching vehicle to avoid collision, then the safety of the host vehicle is improved, but it obstructs the travel of the other vehicle
Solution Approach 1:
Instead of maintaining the stopped position to avoid collision, the system inverts the approach by autonomously moving the host vehicle back to the initial stop position that was stored before movement began. This initial position is guaranteed to not obstruct the other vehicle's path, as it was the position from which the vehicle originally started
Data Source
AI summary
A travel assistance device includes: a detection result storage unit that stores a detection result of an external sensor installed in a host vehicle; a moving object recognition unit that recognizes a surrounding moving object based on a detection result of the external sensor; a route storage unit that stores a route along which the host vehicle has moved based on vehicle information acquired by a vehicle sensor installed in the host vehicle; an initial stop position determination unit that determines an initial position at which the host vehicle has stopped before starting, based on the detection result stored in the detection result storage unit; and a vehicle control unit that stops the host vehicle based on a recognition result of the moving object recognition unit after the host vehicle starts from the initial position. The detection result storage unit stores at least the initial position and the detection result on the route. The vehicle control unit controls movement on the route from a stop position where the host vehicle is stopped to the initial position based on a detection result of the external sensor at a current position of the host vehicle and a detection result of the external sensor stored in the detection result storage unit.