Vehicle Cabin Mode Transition Cues Through Variable Interior Change Speed
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Solution Overview
Problem
Existing methods for notifying occupants of driving mode or travel mode transitions in vehicles lack the ability to vary the speed of changes in interior equipment, such as illumination color and position, which affects recognizability and spatial presentation of the cabin.
Innovation Solution
A vehicle system that includes a mode transition determination unit and a controller to determine transitions in driving and travel modes, varying the speed of state changes in interior equipment like seat position, steering wheel angle, and interior lighting based on these determinations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the speed of state change of interior equipment is kept constant, then the control system is simple, but the occupant awareness of mode changes is insufficient
Solution Approach 1:
The control system dynamically adjusts the speed of state change of interior equipment based on the current driving mode. In automated driving mode, the speed of state change is set to a first (faster) speed to enhance occupant awareness, while in manual driving mode, it is set to a second (slower) speed. This dynamic adjustment resolves the contradiction by making the system adaptive rather than static.
Solution Approach 2:
The system changes the parameter of state change speed based on the determined driving mode. The controller selects between a first state change speed and a second state change speed according to whether the vehicle is in automated or manual driving mode, respectively. This parameter change approach allows the system to optimize occupant awareness without requiring a completely complex control architecture.
2Speed
If the state change of interior equipment occurs rapidly, then the response to mode changes is immediate, but the spatial presentation in the cabin deteriorates
Solution Approach 1:
The system dynamically adjusts the state change speed of interior equipment based on the driving mode. During automated driving, a faster state change speed is applied for immediate response, while during manual driving, a slower speed is used to maintain spatial presentation stability. This dynamic adaptation resolves the contradiction between response speed and spatial stability.
Solution Approach 2:
The controller changes the state change speed parameter according to the determined driving mode. When automated driving is detected, the first state change speed (faster) is applied; when manual driving is detected, the second state change speed (slower) is applied. This parameter switching resolves the contradiction by optimizing both response speed and spatial presentation according to operational context.
3Adaptability or versatility
If a single state change speed is used for all driving modes, then the control system is simple, but the adaptability to different driving modes is limited
Solution Approach 1:
The control system becomes dynamic by adjusting the state change speed according to the determined driving mode. The system transitions from a static single-speed approach to a dynamic multi-speed approach, enhancing adaptability while maintaining relatively simple control logic through mode-based selection.
Solution Approach 2:
The system changes the state change speed parameter based on the detected driving mode. By selecting between a first state change speed and a second state change speed according to whether automated or manual driving is active, the system achieves better adaptability without significantly increasing control complexity.
Data Source
AI summary
A vehicle includes a mode transition determination unit, and a controller. The mode transition determination unit is configured to make a determination as to whether or not one or both of a driving mode and a travel mode have made a transition. The controller is configured to vary a speed of a state change of interior equipment, based on a result of the determination by the mode transition determination unit.