Tire Groove Depth Visualization for Uneven Tread Wear Assessment
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Solution Overview
Problem
Existing methods for displaying tire wear unevenness, such as JP2019-518209 A, fail to effectively convey the visibility of tire groove depth variations, making it difficult to assess tire wear irregularities.
Innovation Solution
A tire groove depth display method and device that extract grounded areas on a tire's tread surface, calculate the depth of tire grooves between these areas, and generate images showing the extracted areas and calculated depths for improved visibility of wear unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a three-dimensional topological surface presentation of the tire is generated, then the surface shape of the tire can be visualized, but the visibility of wear unevenness is insufficient
Solution Approach 1:
The tire tread surface is segmented into multiple measurement regions (e.g., center portion, inner shoulder portion, outer shoulder portion) along the width direction. By dividing the tire into these distinct segments and measuring groove depth in each segment separately, the system can visualize wear patterns across different regions, making wear unevenness clearly visible through comparative display of depth values across segments.
Solution Approach 2:
The invention transitions from displaying only the three-dimensional surface shape to adding a fourth dimension of groove depth information. By measuring and displaying the depth of grooves (voids) in addition to surface topology, the system provides quantitative depth data that makes wear unevenness visually apparent through depth color mapping or numerical display across different tire regions.
2Ease of operation
If only the surface shape of the tire is displayed, then the overall tire structure can be observed, but the groove depth variations indicating wear unevenness cannot be clearly assessed
Solution Approach 1:
The invention introduces an intermediary measurement system that uses sensors (such as laser sensors or contact probes) to measure groove depth at multiple points across the tire tread. This intermediary measurement layer translates physical groove depth into visual data that can be overlaid on the tire image, bridging the gap between simple surface observation and precise wear assessment.
Solution Approach 2:
The system changes the parameter being displayed from purely geometric surface coordinates to groove depth values. By measuring the vertical distance from the tread surface to the groove bottom at multiple locations, and displaying these depth parameters with color coding or numerical labels, the system transforms invisible depth variations into visible information that clearly shows wear patterns.
Data Source
AI summary
A tire groove depth display method includes a grounded part extracting step, a groove depth calculating step, an image generating step, and a displaying step. The grounded part extracting step extracts a grounded part on a surface of a tread part of a tire as a plurality of areas sandwiching a tire groove. The groove depth calculating step calculates a depth of the tire groove between respective areas of the grounded part. The image generating step generates an image that shows the areas extracted by the grounded part extracting step and information on the depth of the tire groove calculated by the groove depth calculating step. The displaying step displays the image generated by the image generating step.