Tire Temperature Diagnosis Using Pressure-Based Cause Detection
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Solution Overview
Problem
Existing tire monitoring systems struggle to determine the cause of a high temperature state in tires, whether it is due to factors on the vehicle side or the tire side, which hampers maintainability and troubleshooting.
Innovation Solution
A tire monitoring system that includes an information acquisition unit to gather data from inflation pressure sensors and temperature sensors, a temperature determination unit to identify if the tire temperature exceeds a threshold, and an inflation pressure determination unit to determine the cause of the high temperature state based on inflation pressure data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tire internal pressure is monitored using a TPMS system, then tire pressure management is improved, but the ability to determine the cause of high temperature state is insufficient
Solution Approach 1:
The determination process is segmented into distinct functional units: a temperature determination unit that identifies high temperature states, and an inflation pressure determination unit that analyzes pressure changes. This segmentation allows each unit to specialize in specific aspects of diagnosis, improving overall determination accuracy while maintaining clear functional boundaries.
Solution Approach 2:
The system merges temperature monitoring and inflation pressure monitoring into a unified determination system. By combining data from both sensors and analyzing them together through the determination units, the system achieves comprehensive cause analysis that neither system could accomplish alone, resolving the information loss problem.
2Device complexity
If only inflation pressure threshold comparison is used, then system complexity is reduced, but maintainability and troubleshooting capability deteriorate
Solution Approach 1:
The system implements feedback mechanisms where the determination units continuously analyze sensor data and provide diagnostic information about the cause of high temperature states. This feedback loop enables real-time troubleshooting by identifying whether the issue originates from the tire side (inflation pressure) or vehicle side (braking, steering), significantly improving ease of repair without adding excessive complexity.
3Reliability
If comprehensive monitoring of temperature and pressure is implemented, then diagnostic capability is improved, but device complexity increases
Solution Approach 1:
The determination units are designed with multi-functionality, serving both as temperature analysis components and inflation pressure analysis components. This universal design allows the same hardware structure to perform multiple diagnostic functions, improving reliability through comprehensive monitoring while minimizing the increase in device complexity through functional integration.
Data Source
AI summary
A tire monitoring system includes an information acquisition unit, a temperature determination unit, and an inflation pressure determination unit. The information acquisition unit acquires measurement data by an inflation pressure sensor and a temperature sensor. The temperature determination unit determines whether the measurement data for temperature is higher than a predetermined threshold value based on the measurement data acquired by the information acquisition unit. The inflation pressure determination unit determines, when the temperature determination unit determines that the temperature is higher than the predetermined threshold value, whether a high temperature state in the tire is caused by a factor on a vehicle side or a tire side based on the measurement data for inflation pressure.