Vehicle Stability Display Using Instability Index and Directional Arrows
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Solution Overview
Problem
Existing vehicle stability display systems fail to accurately inform drivers of their driving stability, particularly when instability exceeds the displayable range, leading to inadequate feedback and reduced driver motivation for stable driving.
Innovation Solution
A stability display apparatus that estimates driving instability using an index and displays it within a predetermined range, with changes beyond the upper limit shown via a bar graph and vectors, ensuring the driver is promptly and accurately informed of instability levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the instability index is displayed only within the upper limit range, then the display remains clear and readable, but the driver cannot be informed of instability changes beyond the displayable range
Solution Approach 1:
The patent adds a vertical dimension to the display by showing instability changes beyond the upper limit as upward arrows above the bar graph. This dimensional extension allows information about out-of-range instability to be conveyed without cluttering the main display area, resolving the contradiction between information completeness and display simplicity.
Solution Approach 2:
The patent introduces an intermediary visual element (arrows indicating change direction and magnitude) that mediates between the raw instability data and the displayed representation. These arrows serve as a translator that conveys out-of-range instability information in a visually intuitive manner without requiring complex numerical displays.
2Ease of operation
If bar graphs are used to display instability trends, then visual recognition is improved, but the display area required increases
Solution Approach 1:
The patent segments the display into distinct functional zones: the bar graph area for historical trend visualization and the arrow indicator area for current instability status. This segmentation allows efficient use of display space by assigning specific functions to specific regions, maintaining visual recognition benefits while minimizing overall area requirements.
Solution Approach 2:
The patent displays only the essential portions of instability information - recent trends via bar graphs and current status via arrows - rather than showing complete historical data or detailed numerical values. This partial display approach maintains visual recognition advantages while significantly reducing the required display area.
Data Source
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AI summary
Disclosed herein are stability display apparatus and methods. One apparatus comprises driving state detection means adapted for detecting a driving state of a vehicle in operation; controller comprising an instability estimation means adapted for estimating an instability index indicating driving instability of the vehicle based on the driving state of the vehicle detected by the driving state detection means and adapted for determining changes in the instability index; and display means adapted for displaying the instability index estimated by the instability estimation means in a display region within a range less than or equal to an upper limit that is a limit of display and adapted for displaying in the display region a representation of the changes of the instability index when the instability index is beyond the upper limit.