Vehicle Wheel Acceleration Sensor for Mechanical Load Assessment
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Solution Overview
Problem
Current methods for determining the state of motor vehicle components, such as suspension systems, lack precision in assessing mechanical loading, which is influenced by road conditions, tire pressure, and driving maneuvers, often requiring multiple sensors and being limited in diagnostic accuracy.
Innovation Solution
A method using a sensor at the wheel to measure instantaneous vertical acceleration, allowing for the determination of mechanical loading through mean, maximum, and minimum values, statistical distribution, and characteristic curves, with the option to include tire internal pressure and load state analysis, enabling precise assessment of component wear and failure probability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current methods are used to determine the state of motor vehicle components, then the assessment process is simple, but the measurement precision of mechanical loading is insufficient
Solution Approach 1:
The patent combines multiple assessment parameters (vertical acceleration, tire internal pressure, load state) into a unified mechanical loading assessment system. By merging these different data sources and processing them together through statistical analysis, the system achieves more precise measurement of mechanical loading while managing complexity through integrated processing rather than separate systems.
Solution Approach 2:
The assessment system is designed to evaluate the state of multiple different components (suspension systems, springs, shock absorbers, chassis, vehicle bodywork) using the same core methodology and sensor setup. This multi-functional approach allows the system to provide comprehensive mechanical loading assessment across various vehicle components without requiring component-specific specialized systems.
2Reliability
If multiple parameters are measured to assess component state, then the reliability of assessment improves, but the device complexity increases
Solution Approach 1:
The system uses a universal assessment methodology that can evaluate multiple vehicle components (suspension, springs, shock absorbers, chassis, bodywork) using the same core sensors and processing approach. This allows reliable multi-component monitoring without requiring separate specialized systems for each component, thereby managing complexity while maintaining reliability.
Solution Approach 2:
The system leverages existing vehicle sensors and operational data (acceleration sensors, tire pressure monitoring systems, load state information) to perform mechanical loading assessment. By utilizing data that is already being collected by the vehicle's own systems, the patent reduces the need for additional dedicated sensors and processing infrastructure, thereby improving reliability without proportionally increasing device complexity.
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 accurate and efficient determination of mechanical loading, reducing the number of required components and enabling predictive maintenance by identifying threshold exceedances and potential component failures.
Implementation Method 1
A plurality of values of an instantaneous vertical acceleration of at least a partial region of at least one wheel of the motor vehicle is determined during operation of the motor vehicle using at least one sensor arranged in the region of the wheel
Data Source
AI summary
A method determines a parameter that indicates a state of at least one component of a motor vehicle. The method contains the now described steps. A plurality of values of an instantaneous vertical acceleration of a sub-region of a wheel of the motor vehicle is determined during operation of the motor vehicle by use of at least one sensor arranged in the region of the wheel. In addition, a degree of a mechanical load on at least one component of the motor vehicle is determined on the basis of the determined values of the instantaneous vertical acceleration.