Vehicle Control Stop Planning Before Non-Controllable Road Points
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Solution Overview
Problem
Automatic vehicle control systems struggle to safely stop the vehicle when there is a problem with the driver, particularly at non-controllable points where high precision map information is unavailable or the vehicle cannot be safely controlled, such as on roads with low curvature radius or steep gradients.
Innovation Solution
A vehicle control device that determines the existence of non-controllable points ahead and sets a vehicle stop location before such points, allowing the vehicle to safely stop by switching to manual control when a driver issue is detected, using sensors and processors to assess driver condition and plan a safe stopping location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle stops at a non-controllable point when driver problem is detected, then the vehicle can be stopped, but the stop becomes unsafe due to inability to switch to manual control
Solution Approach 1:
The system performs preliminary detection of non-controllable points ahead on the road and pre-calculates safe stop locations before the driver problem becomes critical. When a driver problem is detected, the system has already identified suitable stop locations where manual control can be successfully transferred, ensuring safe stopping by acting in advance rather than reactively at the non-controllable point
2Reliability
If the vehicle maintains strict control limits when traveling to stop location, then control safety is maintained, but the vehicle cannot reach the stop location before the non-controllable point
Solution Approach 1:
The system applies different control strategies based on the local situation. When traveling to a pre-determined safe stop location, the system temporarily relaxes control limits to allow the vehicle to reach the stop location within a specified time, while still maintaining safety through continuous monitoring and predetermined stop location selection where control can be successfully transferred
Data Source
AI summary
A vehicle control device has a processor that is configured to determine whether or not a non-controllable point where automatic control of vehicle travel is not allowed exists in a predetermined range from a current location of a vehicle on a path ahead of the vehicle, when it has been determined that there is a problem with a driver, and to set a vehicle stop location where the vehicle can stop at a location before the non-controllable point, when it has been determined that the non-controllable point exists.