TPMS Tangential Acceleration Wear Detection for Vehicle Tires
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Solution Overview
Problem
Current methods for monitoring tire wear, especially in autonomous vehicles, require complex communication between tire pressure monitoring systems and central processors, leading to inefficiencies and increased power consumption, and often rely on manual inspections or indirect methods that may not accurately detect wear levels.
Innovation Solution
A method implemented by a tire pressure monitoring module that acquires tangential acceleration signals, processes maximum and minimum peak measurements, compares them to predetermined thresholds, and transmits warnings autonomously, eliminating the need for central processor integration and allowing direct processing within the module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If complex communication between tire pressure monitoring systems and central processors is used, then tire wear monitoring can be achieved, but power consumption increases and system efficiency decreases
Solution Approach 1:
The tire pressure monitoring module autonomously processes tangential acceleration signals and performs wear detection calculations itself, without requiring continuous communication with the central processor. This self-service approach eliminates unnecessary data transmission and processing overhead, significantly reducing power consumption while maintaining accurate tire wear monitoring
Solution Approach 2:
The patent extracts the essential wear detection functionality from the central processor and implements it directly in the tire pressure monitoring module. By taking out only the necessary signal processing and threshold comparison functions and placing them in the distributed module, the system achieves accurate wear detection with minimal power consumption and no complex communication requirements
2Device complexity
If manual inspection methods are used, then system complexity is reduced, but tire wear detection reliability decreases due to human error and lack of systematic monitoring
Solution Approach 1:
The patent replaces manual visual inspection with an automated electronic monitoring system that processes tangential acceleration signals from the tire. This substitution of mechanical/manual methods with electronic sensing and automated threshold comparison provides reliable, objective wear detection without requiring human intervention or complex system architecture
Solution Approach 2:
The system monitors changes in tangential acceleration parameters over time and compares them against predetermined thresholds. By tracking parameter variations rather than requiring complex image processing or multiple sensors, the system achieves reliable wear detection through simple, effective parameter change monitoring
3Quantity of substance
If indirect methods using multiple onboard sensors are used, then comprehensive data collection is achieved, but measurement precision decreases due to extended cause and effect chains
Solution Approach 1:
The patent extracts the essential measurement function from complex multi-sensor systems and implements it using only the tangential acceleration signal already available in the tire pressure monitoring module. By taking out the wear detection capability and implementing it directly at the source of the acceleration data, the system achieves high measurement precision without requiring comprehensive data collection from multiple sensors
Solution Approach 2:
Instead of using multiple sensors to infer wear through complex chains of cause and effect, the patent inverts the approach by directly utilizing the tangential acceleration signal that is already present in the tire monitoring system. This inversion of the measurement strategy—using the available signal directly rather than inferring from multiple indirect measurements—achieves superior precision with simpler methodology
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 approach provides a more efficient, autonomous, and accurate monitoring of tire wear, reducing power consumption and enhancing the relevance of wear processing strategies by directly processing tangential acceleration signals within the tire pressure monitoring module, thereby improving the detection of significant wear levels.
Implementation Method 1
A TDS method known from the prior art consists in using the tangential acceleration signal in the contact zone between the tire and the ground, to deduce a state of wear of the tire therefrom. This signal corresponds to the tangential acceleration signal perceived by the TPMS module that is mounted in the tire and fixed on the tread of the tire. The tangential accelerometer of the TPMS module monitors the tangential acceleration on rotation of the wheel on which the tire to be monitored is mounted.
Data Source
AI summary
The invention relates to a method for monitoring the wear of a motor vehicle tire. According to the invention, the method comprises the following steps of:acquiring (step E1), from a tangential acceleration signal of said monitoring module, measurements of a variable in the group comprising a maximum tangential acceleration peak and a minimum tangential acceleration peak,performing (step E2) processing of said measurements of said acquired variable,comparing (step E3) said processed measurements to a predetermined maximum variation threshold value,transmitting a warning (step E4) when said predetermined maximum variation threshold value is reached.The invention also relates to a tire pressure monitoring module for implementing said method.