Dual-Sensor Tire Temperature Anomaly Detection for Early Uneven Wear
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Solution Overview
Problem
Existing methods for detecting uneven wear in vehicle tires are inadequate, as they often fail to detect uneven wear early enough or with sufficient accuracy, leading to premature tire degradation and safety risks.
Innovation Solution
A method that utilizes two temperature sensors positioned on either side of the central tire plane to detect temperature anomalies, which indicate uneven loads and potential skew or dragging issues, by measuring and analyzing the time-dependent temperature differences between the two sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing tire sensor methods are used to detect tire conditions, then tire pressure and tread wear can be monitored, but uneven wear cannot be detected with sufficient accuracy or early enough
Solution Approach 1:
The tire temperature monitoring is segmented into multiple measurement zones by placing temperature sensors at different radial positions within the tire. This segmentation allows detection of temperature asymmetry between different tire regions, which indicates uneven wear conditions before they become visually apparent.
Solution Approach 2:
The system performs preliminary detection of uneven wear by monitoring temperature differences between tire zones during normal operation. By detecting temperature asymmetry early in the wear process, the system enables preventive maintenance before actual uneven wear patterns develop, losing time for corrective action.
2Measurement precision
If external measuring devices are used to detect uneven wear, then detection accuracy improves, but the method can only detect wear after it has already occurred and is often irreparable
Solution Approach 1:
The internal temperature sensor system performs preliminary detection of conditions that lead to uneven wear by monitoring temperature asymmetry during tire operation. This allows identification of problematic tire conditions (such as improper inflation, alignment issues, or localized overheating) before actual wear patterns develop, enabling preventive maintenance.
Solution Approach 2:
Temperature serves as an intermediary parameter that reflects underlying tire conditions affecting wear. By monitoring temperature distribution within the tire, the system indirectly detects conditions that will lead to uneven wear, providing an early warning system that bridges the gap between current tire state and future wear patterns.
3Loss of time
If two temperature sensors are positioned on opposite sides of the tire to detect temperature differences, then early detection of uneven wear is enabled, but the device complexity increases
Solution Approach 1:
The temperature sensors serve multiple functions: they monitor overall tire temperature for overheating detection, detect temperature asymmetry for uneven wear prediction, and can identify localized hot spots indicating mechanical issues. This multi-functionality justifies the addition of sensors while providing comprehensive tire health monitoring.
Solution Approach 2:
The existing tire sensor infrastructure is leveraged to perform uneven wear detection without requiring separate dedicated sensors for this specific function. The temperature sensors, already present for other monitoring purposes, are utilized to detect temperature asymmetry patterns that indicate uneven wear, making the system self-sufficient.
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
This method allows for early and reliable detection of impending uneven wear, enabling corrective measures to prevent irreparable damage to the tire, and can be implemented using existing tire sensor technology, reducing the need for additional equipment and computational resources.
Implementation Method 1
a first electronic temperature sensor unit arranged in the tire interior on the system vehicle tire for measuring a first tire temperature T1
Implementation Method 2
a second electronic temperature sensor unit arranged in the tire interior on the system vehicle tire for measuring a second tire temperature T2
Implementation Method 3
detecting a temperature anomaly of the system vehicle tire by evaluating the time-dependent temperature difference evaluation variable
Data Source
Figure 1~2
AI summary
The invention relates to a method for detecting a temperature anomaly in system vehicle tires (10), wherein the system vehicle tire (10) comprises a first temperature sensor unit (16) and a second temperature sensor unit (18), which are arranged on different sides of the plane AE orthogonal to the axial direction and extending centrally through the system vehicle tire (10) with respect to the axial direction, and comprising the method steps: a) measuring a time-dependent first tire temperature T1(t1) with a first electronic temperature sensor unit (16) and measuring a time-dependent second tire temperature T2(t2) with an electronic temperature sensor unit (18) and determining a time-dependent temperature difference evaluation variable ΔTB(t3) from the measured first tire temperatures T1 and the measured second tire temperatures T2 with the electronic data processing device,and b) detecting a temperature anomaly of the system vehicle tire (10) by evaluating the time-dependent temperature difference evaluation variable ΔTB(t3) with the electronic data processing device, wherein the temperature anomaly of the system vehicle tire (10) is detected if the time-dependent temperature difference evaluation variable ΔTB(t3) indicates that at least one predetermined change in the temperature difference between the measured first tire temperature T1 and the measured second tire temperature T2 exists.