Tire Tread Pressure Mapping for Automated Groove Analysis
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Solution Overview
Problem
Existing methods for analyzing tire treads are limited as they either lack the capability to measure pressure data or require significant manual effort, and current systems either focus on physical parameters or cannot capture pressure data simultaneously.
Innovation Solution
A pressure mapping system utilizing capacitive pressure sensors and advanced image processing to automatically measure physical parameters such as groove area fraction and shoulder center ratio by generating a pressure map, which includes a tire pressure sensor array, sensor electronics unit, and application software to analyze tire tread features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual techniques such as applying ink to the tread and rolling the tire across construction paper are used, then tread deformation can be examined, but the process is crude and lacks precision
Solution Approach 1:
The patent replaces manual mechanical techniques (ink application, rolling on paper) with a pressure mapping system that uses an array of pressure sensors to automatically measure and map contact pressures and tread deformations, significantly improving measurement precision while maintaining relatively simple system complexity
Solution Approach 2:
The patent creates a digital copy of the tread footprint through pressure sensor arrays that map contact areas, allowing for precise digital analysis and storage of tread deformation data without the crudeness of manual ink methods
2Measurement precision
If transducer matrix film is used for measuring tire tread pressures, then pressure measurements can be obtained, but considerable manual effort is required to extract the required data
Solution Approach 1:
The patent replaces manual data extraction processes with automated image processing and analysis software that processes pressure sensor data, calculates contact area, center of pressure, and other parameters automatically, eliminating the need for manual data extraction while maintaining accurate pressure measurements
Solution Approach 2:
The system performs self-service through automated algorithms that independently process pressure map data, calculate tread parameters, and generate results without requiring manual intervention, making the data extraction process fully automatic
3Loss of information
If CCD camera technology is used to capture tire tread images, then visual analysis is possible, but the system does not capture pressure data and only analyzes one tread at a time
Solution Approach 1:
The patent merges pressure sensing capabilities with visual imaging by combining pressure sensor arrays with camera systems, allowing simultaneous capture of both pressure data and visual tread images in a single integrated system, eliminating the need for separate analysis passes
Solution Approach 2:
The system achieves multi-functionality by designing a platform that can simultaneously perform pressure measurement, visual imaging, and automated analysis of multiple treads, making the system versatile enough to handle various tire testing scenarios without requiring separate dedicated systems
4Measurement precision
If optical imaging systems are used to analyze tire footprint, then various tread parameters can be identified, but the system has only coarse capabilities and is not capable of measuring pressure
Solution Approach 1:
The patent combines high-resolution optical imaging systems with pressure sensor arrays into a single integrated platform, enabling simultaneous capture of detailed visual tread parameters and accurate pressure measurements, thereby achieving both fine measurement capability and complete data collection
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate, automated measurement of tire tread physical and pressure parameters, reducing manual effort and enhancing data extraction efficiency by providing detailed pressure maps and feature analysis.
Implementation Method 1
A pressure sensor measures the pressure distribution produced by a tire
Data Source
AI summary
A pressure sensor is used to automatically calculate physical parameters of a tire, for example, groove area fraction or shoulder center ratio. In one approach, a pressure sensor measures the pressure distribution produced by a tire when a known load is applied to the tire while it is resting on or traversing the pressure sensor. The resulting pressure map corresponds to tread area and features of the tread contact area.