Steering Grip-Aware Curve Speed Guidance for Vehicle Control
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Solution Overview
Problem
Existing vehicle travel control devices do not adequately provide useful information for occupants, particularly in relation to steering wheel gripping states during curved road travel, hindering the development of sustainable transportation systems.
Innovation Solution
A control device and method that determines a driver's steering wheel gripping state and adjusts vehicle speed and output information accordingly, providing different information based on gripping states and distances to enhance occupant awareness and vehicle control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the vehicle provides speed control information during curved road travel, then the driver receives guidance on appropriate speed plans, but the information may not be sufficiently differentiated based on driver behavior, reducing its usefulness
Solution Approach 1:
The system determines the driver's gripping state in advance before the vehicle enters the curved road section. Based on this predetermined gripping state, the system selects and provides appropriate speed plan information to the driver before the curve is encountered, ensuring the information is relevant and useful for the upcoming maneuver
Solution Approach 2:
The information provided to the driver is segmented based on the gripping state. When the driver is gripping the steering wheel, one type of speed plan information is provided, while when the driver is not gripping, different speed plan information is provided. This segmentation ensures the information is tailored to the driver's actual behavior and needs
2Loss of information
If the vehicle provides different information based on gripping state, then the information becomes more relevant to driver behavior, but the system complexity increases
Solution Approach 1:
The system automatically determines the driver's gripping state using sensors and automatically selects the appropriate speed plan information based on this state. The driver does not need to manually input or select information types - the system serves itself by autonomously adapting the information provision to the detected gripping state, thereby reducing the perceived complexity for the user
3Reliability
If the vehicle travels at lower speed when driver is not gripping steering wheel, then safety is improved, but the driver may lose control authority on the second curved road
Solution Approach 1:
The system continuously monitors the driver's gripping state on the second curved road and uses this feedback to adjust the information provision. When the driver is detected gripping the steering wheel on the second curve, the system provides speed plan information that restores higher speed capability, thereby returning control authority to the driver when needed while maintaining safety through continuous state monitoring
Data Source
AI summary
A control device determines whether or not a driver of a vehicle is gripping a steering wheel while the vehicle is traveling on a curved road, causes an output device to output first information in an object segment between the first curved road and a second curved road that is the next curved road after the first curved road on which the vehicle is scheduled to travel in a gripping state in which the driver is gripping the steering wheel, and causes the output device to output second information different from the first information in the object segment in a non-gripping state in which the driver is not gripping the steering wheel.