Automatic Driving Control Planning Apparatus for Driver Burden Management
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Solution Overview
Problem
Existing automatic driving control systems face challenges in maintaining a sufficient length of the driving switching preparation section while ensuring the length of the automatic driving section is not reduced, leading to increased driver burden.
Innovation Solution
An automatic driving control planning apparatus that includes a driving load calculation unit, a driving switching permission determination unit, and a permission standard relaxation unit, which calculates and manages the driving load for each point in the driving switching preparation section, permits switching to manual driving based on a threshold value, and relaxes the standard as the vehicle approaches the end of the section to prevent excessive reduction in the preparation section length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sections with large driving load are excluded from the driving switching preparation section, then the driver burden is reduced, but the substantial length of the driving switching preparation section is shortened
Solution Approach 1:
The threshold value is dynamically adjusted based on the vehicle's position within the preparation section. As the vehicle progresses through the section and the driver's awareness increases, the threshold value increases, allowing sections with higher driving loads to be included in the preparation section without unduly burdening the driver. This dynamic approach preserves the substantial length of the preparation section while still protecting the driver from excessive burden at the beginning of the transition.
2Reliability
If the threshold value for driving load is strictly maintained, then switching safety is ensured, but the length of the driving switching preparation section is excessively reduced
Solution Approach 1:
Rather than maintaining a strict fixed threshold value, the invention implements a dynamic threshold that increases as the vehicle approaches the end of the preparation section. This allows the system to maintain high safety standards (stringent threshold) at the beginning of the preparation section when driver awareness is low, while gradually relaxing the standard (increasing threshold) towards the end when driver awareness has increased, thereby preserving the length of the preparation section without compromising overall switching safety.
Data Source
AI summary
An automatic driving control plan creation unit creates a plan of an automatic driving section in which a subject vehicle is automatically driven, and a plan of a driving switching preparation section for switching the subject vehicle from automatic driving to manual driving. For each point in the driving switching preparation section, a driving load calculation unit calculates a driving load applied to a driver when the driver manually drives the subject vehicle. A driving switching permission determination unit permits switching of the subject vehicle from automatic driving to manual driving at a point where the driving load is smaller than a predetermined threshold value, and does not permit switching of the subject vehicle from automatic driving to manual driving at a point where the driving load is equal to or larger than the threshold value. A permission standard relaxation unit makes the driving load difficult to exceed the threshold value.