Tire Failure Prediction Using Symmetrical Axle Temperature Comparison
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Solution Overview
Problem
Existing tire failure prediction systems lack accuracy in predicting tire failure on vehicles, as they rely on temperature and air pressure detection without considering symmetrical temperature differences between tires mounted on the same axle, leading to potential false negatives or false positives.
Innovation Solution
A tire failure prediction system that includes temperature sensors for each tire, a determination unit that compares temperature values between symmetrical tires on the same axle, and optional air pressure sensors, using threshold values to determine if a tire has a higher likelihood of failure based on temperature and air pressure differences, with temperature correction and change rate calculations for enhanced accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If temperature and air pressure detection is used for tire failure prediction, then tire failure can be predicted, but prediction accuracy is insufficient due to not considering symmetrical temperature differences between tires
Solution Approach 1:
The patent applies asymmetry by introducing a temperature difference threshold specifically for symmetrical tires on the same axle. Instead of treating all tires equally with a single threshold, the system recognizes that symmetrical tires should have similar temperatures, and deviations from this symmetry indicate potential failures. This asymmetric treatment of tire temperature data improves both prediction accuracy and reliability by filtering out normal variations while detecting actual anomalies.
2Ease of operation
If temperature threshold comparison is used for failure determination, then simple determination can be made, but false positives or false negatives occur due to not considering symmetrical tire comparisons
Solution Approach 1:
The patent merges two determination approaches: simple temperature threshold comparison and symmetrical tire temperature difference comparison. By combining these methods, the system maintains operational simplicity while significantly improving determination accuracy. The controller first checks if individual tire temperatures exceed the threshold, then further checks if symmetrical tires have excessive temperature differences, reducing false positives and false negatives without complicating the overall determination process.
Data Source
AI summary
A tire failure prediction system includes first and second temperature sensors to detect temperatures of first and second tires mounted on a traveling vehicle, a temperature acquisition unit to acquire the temperatures detected by the first and second temperature sensors, and a determination unit to determine, based on the temperatures acquired, a possibility of failure for the first and second tires. The vehicle includes axles on which the tires are mounted. The first and second tires are mounted on an identical axle of the vehicle. Mounting positions of the first and second tires are symmetrical on the identical axle. The determination unit determines that the first tire has a possibility of failure where the temperature of the first tire is greater than a predetermined threshold, and a difference between the temperatures of the first and second tires is greater than a predetermined first temperature threshold.