Wheel Wear Estimation Using Acceleration and Revolution Sensing
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Solution Overview
Problem
Existing wheel wear computation systems are inaccurate when GPS signals are unavailable, as they rely on position information from GPS satellites, which can contain errors and have long reception intervals, leading to low precision in wheel wear estimation.
Innovation Solution
A wheel wear computing system that uses a revolution sensor to detect wheel revolutions and an acceleration sensor to calculate travel distance, allowing for precise wear computation even without GPS signals, by considering fore and aft, lateral travel distances, and incorporating temperature and vertical load sensors for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If GPS position information is used to compute travel distance, then the system can provide a simple implementation, but the measurement precision deteriorates due to meter-level errors and long reception intervals
Solution Approach 1:
The patent replaces the GPS-based position measurement system with an acceleration sensor-based motion detection system. The acceleration sensor detects vehicle acceleration, which is then integrated to compute travel distance, eliminating reliance on satellite signals and their inherent precision limitations.
Solution Approach 2:
The patent introduces an acceleration sensor as an intermediary device between the vehicle and the wear computation system. This intermediary captures motion data at high frequency, providing a more precise basis for calculating travel distance and subsequent wear metrics.
2Adaptability or versatility
If GPS signals are used for wear computation, then the system works in open environments, but the reliability deteriorates in GPS-denied environments such as tunnels and indoor areas
Solution Approach 1:
The patent makes the wear computation system universal by replacing GPS-dependent functionality with acceleration sensor-based measurement. This allows the system to function reliably in all environments including tunnels, indoor areas, and GPS-denied zones, achieving multi-environment adaptability.
Solution Approach 2:
The patent extracts the wear computation functionality from its dependency on GPS signals. By removing the GPS requirement and using acceleration sensor data instead, the system can operate independently of satellite signal availability, ensuring reliability in diverse environments.
3Productivity
If GPS position data with meter-level errors is used, then the system can operate with available technology, but the wear computation precision deteriorates
Solution Approach 1:
The patent substitutes the low-precision GPS position measurement system with a high-precision acceleration sensor-based measurement system. The acceleration sensor captures motion at high frequency with superior precision, enabling accurate wear computation while maintaining system operability.
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 high-precision wheel wear computation in all directions, reducing errors and providing reliable wear estimation, even in GPS-denied environments, with the option to display multiple wear metrics for user awareness.
Implementation Method 1
an acceleration sensor (49) configured to detect an acceleration of the vehicle (2) in a travel direction thereof
Implementation Method 2
a revolution sensor (48) configured to detect a number of revolutions of the wheel (3)
Data Source
AI summary
A wear computing system (100, 200, 300) for computing a wear of a wheel (3) of a vehicle (2) comprises a revolution sensor (48) configured to detect a number of revolutions of the wheel (3), an acceleration sensor (49) configured to detect an acceleration of the vehicle (2) in a travel direction thereof, and a control unit (7) configured to compute a travel distance of the vehicle from the acceleration of the vehicle, and compute the wear from the travel distance and the number of revolutions of the wheel (3).