Autonomous Vehicle Display Device for Clear Intent Communication
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Solution Overview
Problem
Pedestrians and drivers of other vehicles may have difficulty recognizing the intentions of an autonomous vehicle, particularly when it displays stop road signs, due to confusion between the vehicle needing to stop or the vehicle stopping, and also due to country or area-specific road signs and writing.
Innovation Solution
A display device in an autonomous vehicle that includes a display unit, a determination unit, and a display control unit, which determines the vehicle's state (deceleration, stop, or start) and displays corresponding information, using optical presentations that move vertically from top to bottom to convey deceleration, and other visual cues to clearly communicate the vehicle's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If road signs and writing are used to communicate vehicle state, then information can be conveyed, but understanding becomes difficult due to country or area specificity
Solution Approach 1:
The patent changes the parameter of visual presentation from static text/symbols to dynamic optical motion patterns. Different vehicle states (deceleration, stop, start) are represented by distinct motion directions (downward, stationary, upward), creating a universal language that transcends cultural and linguistic barriers while effectively transmitting vehicle intent information.
2Loss of information
If stop road sign is displayed, then vehicle stop intent can be communicated, but confusion arises between vehicle needing to stop or vehicle stopping
Solution Approach 1:
The patent applies dynamics by using motion patterns to represent different vehicle states. The optical presentation moves downward for deceleration, remains stationary for stop state, and moves upward for start state. This dynamic visual language clearly distinguishes between 'vehicle needing to stop' (downward motion) and 'vehicle stopping' (stationary), eliminating the ambiguity inherent in static road signs.
3Adaptability or versatility
If optical presentation moves from upper side to lower side to indicate deceleration, then deceleration state becomes universally understandable, but display timing and speed conditions must be precisely controlled
Solution Approach 1:
The display control unit continuously receives feedback from the vehicle's speed and travel state, and adjusts the optical presentation accordingly. When the vehicle is in deceleration state, it displays downward motion; when stopped, it displays stationary presentation; when starting, it displays upward motion. This feedback mechanism ensures precise control despite the added complexity, maintaining accurate synchronization between vehicle state and visual communication.
Data Source
AI summary
A display device provided in a vehicle that travels autonomously includes: a display unit configured to display information to an outside of the vehicle; a determination unit configured to determine whether a travel state of the vehicle is any one of a deceleration state, a stop state, and a start state, based on a detection result of an internal sensor of the vehicle; and a display control unit configured to display on the display unit the information corresponding to each of the deceleration state, the stop state, and the start state, based on a determination result of the determination unit. In response to the determination unit having determined that the vehicle is in the deceleration state, the display control unit is configured to display on the display unit the information including a display moving from an upper side to a lower side along a vertical direction of the vehicle.