Vehicle Display Control for Inter-Vehicle Time Change Awareness
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Solution Overview
Problem
Existing adaptive cruise control systems fail to effectively convey changes in vehicle speed and inter-vehicle distance to occupants, leading to potential misinterpretation of vehicle speed and distance variations.
Innovation Solution
An information processing device that acquires and displays graphic images on a vehicle's display unit, changing the graphic image when changes in vehicle speed or inter-vehicle distance exceed a threshold, using color and dimension adjustments to convey these changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inter-vehicle time control ACC is applied to display bar graph information, then the system can maintain a specified inter-vehicle time, but the occupant cannot recognize changes in vehicle speed or inter-vehicle distance when the bar graph display does not change
Solution Approach 1:
The patent applies color changes to the bar graph display to indicate variations in vehicle speed and inter-vehicle distance. When the magnitude of change in these parameters exceeds a predetermined threshold, the bar graph changes color to alert the occupant, thereby preserving the inter-vehicle time control function while improving occupant awareness of dynamic changes.
Solution Approach 2:
The patent introduces dynamic display characteristics by making the bar graph's visual properties (color, brightness) change in response to real-time variations in vehicle speed and inter-vehicle distance. This dynamic adjustment allows the display to convey information about parameter changes while maintaining the underlying control function.
2Device complexity
If the bar graph display remains static to maintain simplicity, then the display system remains simple, but the occupant cannot grasp changes in vehicle speed or inter-vehicle distance
Solution Approach 1:
The patent uses color changes as a simple yet effective mechanism to convey information about parameter changes. This approach adds minimal complexity to the display system while significantly improving the occupant's ability to grasp changes in vehicle speed and inter-vehicle distance.
Solution Approach 2:
The patent changes visual parameters of the bar graph (such as color and brightness) in response to changes in physical parameters (vehicle speed and inter-vehicle distance). This allows the display to convey dynamic information without requiring complex additional display elements.
Data Source
AI summary
The information processing device includes an acquisition unit that acquires detection information detected by a detection unit including the vehicle speed of the own vehicle and the inter-vehicle distance from another vehicle running ahead of the own vehicle in the traveling direction of the own vehicle; displaying on a display unit in the vehicle a graphical image representing information about the inter-vehicle time required for the own vehicle to reach the position where the other vehicle is located, which is derived using the acquired detection information; a display control unit that changes display of the graphic image when a magnitude of variation in at least one of the vehicle speed and the inter-vehicle distance included in the information exceeds a predetermined threshold.