Vehicle Path Display With Lateral Acceleration Band Mapping
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Solution Overview
Problem
Existing display devices fail to effectively convey the correlation between vehicle travel path and lateral acceleration, making it difficult to comprehend the driver's skills and behavior, particularly in complex maneuvers like turning.
Innovation Solution
A display device that visually represents lateral acceleration through a band of varying width along the travel path, opposite to the direction of acceleration, with color coding for front-rear acceleration, allowing easy comprehension of lateral and front-rear acceleration magnitudes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If travel path and acceleration are displayed separately in individual windows, then each parameter can be displayed clearly, but it becomes difficult to comprehend the correlation between position on travel path and acceleration at these positions
Solution Approach 1:
The patent combines the travel path display and acceleration display into a single integrated view. The acceleration band is superimposed directly on the travel path, allowing users to see both the path and acceleration correlation simultaneously without needing to switch between separate windows or mentally correlate data from different displays.
Solution Approach 2:
The patent adds a visual dimension to represent acceleration magnitude by varying the width of the band along the travel path. Instead of displaying acceleration as a separate numerical value or graph, the magnitude is encoded in the spatial width of the band, creating a intuitive visual correlation between position and acceleration without requiring separate display windows.
2Quantity of substance
If lateral acceleration is displayed using a graph with vertical axis for acceleration and horizontal axis for lateral acceleration, then acceleration data can be shown, but it becomes difficult to understand lateral acceleration at each specific position on the travel path
Solution Approach 1:
The patent applies local quality by making the band width at each specific position along the travel path correspond to the lateral acceleration magnitude at that same position. This localized mapping allows users to understand acceleration at any given point on the path by simply observing the band width at that location, eliminating the need to interpret abstract graph coordinates.
Solution Approach 2:
The travel path is effectively segmented into multiple positions, with each position having its own acceleration representation through the varying band width. This segmentation allows for position-specific acceleration understanding while maintaining the overall contextual view of the entire travel path.
3Measurement precision
If the display device shows detailed acceleration data for evaluation, then measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent changes the parameter representation from traditional graphical coordinates to spatial width variation. By encoding acceleration magnitude in the width parameter of the band rather than in coordinate positions on a graph, the display maintains detailed acceleration information while using a simpler, more intuitive visual structure that reduces perceived complexity.
Data Source
AI summary
The display device disclosed in the present specification draws a band having a width corresponding to the magnitude of the lateral acceleration at each position on a side opposite to the direction of the lateral acceleration of the vehicle at each position of the travel path along the travel path of the vehicle. When the vehicle turns along a curve, lateral acceleration toward inside of the curve is generated in the vehicle. In the display device disclosed in the present specification, a band spreading to outside of the curve is drawn along the travel path. The greater the lateral acceleration is, the wider the band is.