Tyre Sensor Module Misalignment Detection Using Speed-Dependent Signals
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Solution Overview
Problem
Tire monitoring systems face reliability issues due to incorrect sensor module arrangements in sensor module holders, leading to falsified operating parameter readings, particularly affecting acceleration-based parameters.
Innovation Solution
A method to detect faulty sensor module arrangements by comparing vehicle-speed-dependent operating parameters with expected values, utilizing centrifugal force influences and mathematical models to identify deviations, especially in elastic material holders, and evaluating these across specific speed ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sensor modules are arranged in elastic material holders to enable easy replacement, then ease of operation is improved, but manufacturing precision deteriorates due to tilting and misalignment
Solution Approach 1:
The patent changes the physical state of the holder material from rigid to elastic, allowing the holder to flex and accommodate the sensor module during installation. This elastic deformation enables easy insertion and replacement while the material's recovery force maintains proper positioning, thus resolving the contradiction between ease of operation and manufacturing precision.
2Manufacturing precision
If sensor modules are tightly fixed in holders to prevent misalignment, then manufacturing precision is improved, but ease of operation deteriorates due to difficult replacement
Solution Approach 1:
The holder is designed with dynamic characteristics, allowing it to transition between a relaxed state during installation (enabling easy replacement) and a constrained state during operation (maintaining precision). The elastic material naturally adapts its stiffness based on the operational phase, resolving the contradiction between ease of operation and manufacturing precision.
3Ease of operation
If sensor modules are loosely arranged in holders to facilitate installation, then ease of operation is improved, but measurement precision deteriorates due to faulty arrangement
Solution Approach 1:
The elastic holder material acts as an intermediary between the sensor module and the mounting structure. It provides a compliant interface that allows easy installation while simultaneously ensuring proper positioning and orientation. The material's elasticity compensates for minor misalignments, maintaining measurement precision without compromising ease of installation.
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
Enhances the reliability of tire monitoring systems by accurately identifying and correcting misalignments or tilts of sensor modules, ensuring precise data collection and reducing errors in tire contact patch and load calculations.
Implementation Method 1
each of which determines an operating parameter of the respective tire depending on a sensor-detected acceleration at the location of the sensor module
Implementation Method 2
In particular, the method according to the aforementioned aspect of the invention can be used to detect a sensor module installed at an angle in the sensor module mount
Implementation Method 3
utilizing centrifugal force influences and mathematical models to identify deviations
Data Source
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AI summary
One aspect of the invention relates to a method for detecting a faulty arrangement of a sensor module (12) in a sensor module holder (13) in a tyre (2) on a vehicle (1) equipped with a tyre monitoring system. A faulty arrangement of a sensor module (12) is detected by establishing on the basis of a comparison of operating parameters (FPQ) determined by the sensor modules (12) of the tyre monitoring system that there is, for this sensor module (12), a vehicle (1)-speed dependent discrepancy between the operating parameter (FPQ) and an operating parameter (FPQ) to be expected for this sensor module (12).