Tire Acceleration Peak Detection via Signal Averaging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for detecting acceleration peaks in tires, which are crucial for determining tire contact patch changes, face challenges due to complex and noisy radial acceleration signals with superimposed vibrations, making reliable detection difficult.
Innovation Solution
A method involving continuous recording of acceleration signals, forming average values, and comparing them to threshold values to determine brief acceleration peaks, enhancing robustness by analyzing ratios of different average values to accurately identify the start and end of tire contact patch changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If radial acceleration signal is analyzed to detect tire contact patch changes, then measurement of geometric changes is achieved, but the signal contains superimposed vibrations from road surface and tire tread that reduce detection reliability
Solution Approach 1:
The patent extracts only the relevant acceleration peak information from the complex radial acceleration signal by identifying specific peak characteristics (magnitude, duration, timing) that correspond to tire contact patch changes, while filtering out superimposed vibrations from road surface and tire tread through signal processing
Solution Approach 2:
The patent transforms the raw acceleration signal into meaningful parameters by analyzing peak magnitude, peak duration, and peak timing relative to tire rotation position, converting noisy physical measurements into reliable diagnostic indicators for tire condition monitoring
2Reliability
If multiple sensors and safety systems are integrated in vehicles, then safety and comfort functions are improved, but system complexity increases
Solution Approach 1:
The acceleration sensor serves multiple functions: detecting tire contact patch changes, monitoring tire tread condition, measuring tire load state, and providing data for both safety and comfort systems, thereby reducing the need for separate dedicated sensors and simplifying overall system architecture
Solution Approach 2:
The system uses the existing radial acceleration signal, which already contains information about tire contact patch changes due to centripetal acceleration during rotary motion, and processes this self-generated signal to extract diagnostic information without requiring additional external measurement systems
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 robust and reliable method for detecting acceleration peaks, improving the accuracy of tire contact patch determination and enhancing the reliability of safety and comfort systems by filtering out noise and vibrations in the acceleration signals.
Implementation Method 1
the radial acceleration signal, which is characterized by the centripetal acceleration in the round region of the tire, is analyzed, and executes a rotary motion and transitions into a translatory motion in the region of the tire contact area
Data Source
AI summary
A method and a device for determining an acceleration peak, in particular for a tire, on the basis of a signal output by a sensor and assignable to the rotation of the tire, which signal corresponds to an acceleration, the determination being made by performing the following: recording at least one acceleration signal assignable to the rotation of the tire, the recording being carried out continuously; forming an average value from the recorded acceleration signal; comparing the recorded acceleration signal with the formed average value; forming a additional average value from the recorded acceleration signal; comparing the recorded acceleration signal with the formed average value; and determining the acceleration peak on the basis of the formed comparison.