Vehicle Display Pointer Mode Based on System Confidence
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Solution Overview
Problem
In vehicles operating under automatic drive control, the driver may need to intervene due to changes in external environments, making it difficult to continue automatic drive control, and there is a need for intuitive display of the possibility of continuing automatic drive control.
Innovation Solution
A display device that includes an on-board display and an electronic control unit to obtain a traveling plan and system confidence level from the automatic driving system, displaying a pointer indicating the course in a mode set based on the confidence level, with changes in transparency and color to indicate the reliability of automatic drive control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the automatic driving system operates without driver intervention, then the automation level is improved, but the safety and reliability deteriorate when external environment changes make continuing automatic drive control difficult
Solution Approach 1:
The system continuously monitors the external environment and calculates a system confidence level based on sensor data quality, environmental conditions, and driving scenario complexity. This feedback mechanism allows the system to detect when automatic drive control reliability is deteriorating and triggers appropriate responses including driver alerts and mode transitions.
Solution Approach 2:
The display mode of the pointer dynamically changes based on the system confidence level. When confidence is high, the pointer displays in normal mode; when confidence decreases, the pointer changes color, increases in size, or becomes more prominent to alert the driver. This dynamic adaptation allows the system to maintain automation while communicating reliability status to the driver.
2Reliability
If the system provides detailed information about automatic drive control status, then the reliability is improved, but the ease of operation deteriorates due to information overload for the driver
Solution Approach 1:
Instead of providing comprehensive system status information throughout the interface, the patent applies enhanced visual indicators selectively to the pointer element that is most relevant to the driver's immediate needs. The pointer's appearance changes (color, size, position) to convey specific information about system confidence and recommended actions, while other interface elements remain simple and uncluttered.
3Measurement precision
If the pointer display mode changes frequently to reflect system confidence level, then the information accuracy is improved, but the ease of operation deteriorates due to visual distraction
Solution Approach 1:
The system uses color changes in the pointer to convey system confidence level and drive control status. For example, green may indicate high confidence and normal operation, yellow may indicate reduced confidence requiring driver attention, and red may indicate low confidence requiring immediate driver intervention. This color-coding system provides precise information about system state while using intuitive visual cues that reduce cognitive load compared to numerical or text-based displays.
Data Source
AI summary
A display device includes an electronic control unit configured to: obtain a traveling plan from an automatic driving system of a vehicle, the traveling plan including a course of the vehicle under automatic drive control of the automatic driving system; obtain, from the automatic driving system, a system confidence level of the automatic drive control calculated based on at least an external environment around the vehicle; and display, on a display, a pointer as an image indicating the course during the automatic drive control in a display mode set based on the system confidence level.