Vehicle Speed-Range Display for Downhill Control Feedback
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Solution Overview
Problem
Conventional downhill speed control devices do not notify occupants of the speed range that can be controlled, making it difficult for them to recognize the state of driving control performed by the device.
Innovation Solution
A display device mounted on a vehicle displays a first image showing the speed range controllable by the driving controller, a second image showing the target vehicle speed, and a third image showing the vehicle's speed, with the second image being displayed in association with the upper or lower limit of the first image when the vehicle's speed deviates from the range, allowing the occupant to recognize the control state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a downhill speed control device is used to control vehicle speed, then the vehicle speed can be maintained at a constant speed, but the occupant cannot recognize the control state because the speed range is not notified
Solution Approach 1:
The display controller provides visual feedback to the occupant by displaying the controllable speed range (first image), target vehicle speed (second image), and actual vehicle speed (third image). When the vehicle speed deviates from the controllable range, the system provides feedback by associating the target speed display with the upper or lower limit of the speed range, enabling the occupant to understand the control state and take appropriate actions.
2Ease of operation
If the second image is always displayed at its normal position, then the display is simple, but the occupant cannot intuitively recognize when the speed deviates from the controllable range
Solution Approach 1:
The display controller changes the display position of the second image (target vehicle speed) based on the vehicle speed status. When the vehicle speed is within the controllable range, the second image is displayed at its normal position. When the vehicle speed exceeds the controllable range, the second image is displayed in association with the upper or lower limit of the speed range, providing visual information about the speed deviation while maintaining display simplicity.
Data Source
AI summary
A display device, a display control method, and a non-transitory computer-readable recording medium are disclosed. The display device of an embodiment is mounted on a vehicle and includes: a display part; and a display controller displaying a first image showing a speed range controllable by a driving controller that controls a speed of the vehicle to a constant speed, a second image showing a target vehicle speed of the vehicle, and a third image showing the speed of the vehicle on the display part. The display controller displays the second image in association with an upper limit or a lower limit of the first image on the display part when the speed of the vehicle deviates from the speed range.