Vehicle Wheel Vibration Sensor Road Quality Detection
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Solution Overview
Problem
Current systems lack the ability to determine road quality to activate or adapt functions of electronic measurement units in vehicle wheels, which are essential for accurate parameter measurement and processing.
Innovation Solution
A method using a sensor in the vehicle's wheel to measure vibrations at a specific frequency range (300-500 Hz), calculate their strength, and compare it against predetermined thresholds to determine road quality, allowing for activation of specific functions or adaptation of operating parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are used to measure vibrations at low frequencies (0- few Hz), then the existing measurement functions can be maintained, but the road quality cannot be distinguished
Solution Approach 1:
The patent changes the frequency parameter from low frequencies (0-few Hz) to a specific higher frequency range (300-500 Hz, preferably around 450 Hz). This parameter change enables the sensor to detect vibrations that carry road quality information, allowing differentiation between various road quality levels while maintaining existing measurement functions.
2Measurement precision
If the distinguishing frequency is set between 300-500 Hz, then road quality levels can be easily distinguished, but the measurement system requires new frequency calibration
Solution Approach 1:
The patent establishes a specific frequency range (300-500 Hz) as the new operating parameter for road quality detection. This standardized parameter change, while requiring initial calibration, simplifies the overall system by providing a clear, defined frequency band for processing, making the calibration process systematic rather than complex.
3Adaptability or versatility
If existing sensors are used for general vehicle measurements, then multiple functions can be served, but road quality specific measurements cannot be performed
Solution Approach 1:
The patent makes the existing vibration sensor multi-functional by utilizing it for both traditional vehicle measurements (at low frequencies) and road quality determination (at 300-500 Hz). The sensor processes vibrations across different frequency ranges, enabling it to serve multiple functions without requiring additional dedicated sensors for road quality monitoring.
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
Enables reliable and effective determination of road quality, allowing for the activation of functions or adaptation of electronic measurement unit parameters, improving measurement accuracy and processing efficiency.
Implementation Method 1
at least one sensor able to measure the vibrations perceived by the tread of the tire of said wheel
Data Source
AI summary
A method of determining the level of quality of a road from an electronic measurement unit mounted in a wheel of a motor vehicle traveling on the road. The electronic measurement unit includes at least one sensor able to measure the vibrations perceived by the tread of the tire of said wheel. The method includes measuring, using the sensor, the vibrations perceived by the tread of the tire of the wheel, calculating the strength of the vibrations measured at a predetermined vibrational frequency referred to as the distinguishing frequency, comparing the calculated strength with predetermined strength values contained in a table stored in a memory zone, which are characteristic of various road quality levels, and determining the level of quality of the road from the comparison made.