Wagon Swing Detection Using Fixed Track Sensors
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Solution Overview
Problem
Existing solutions for monitoring wagon swing in railways are inadequate as they rely on measuring the angle of attack between wheels and tracks, which does not accurately reflect the wagon's rocking inclination, leading to inaccurate data and inability to effectively gauge or measure swing for maintenance purposes.
Innovation Solution
A system and method using a set of fixed sensors spaced apart and installed on a railway track, measuring the angle of inclination of a wagon relative to its centerline, allowing for the detection of wagon swing by measuring distances and obtaining damping curves, independent of the angle of attack, to classify the damping assembly's integrity and determine maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors are installed on the wagon to measure oscillations and angles, then the measurement system is portable and easy to install, but the measured angle of attack does not accurately reflect the wagon's swing due to damping system interference
Solution Approach 1:
The patent introduces an intermediary measurement system consisting of fixed sensors installed on the railway track infrastructure rather than on the wagon itself. This intermediary system measures the wagon's swing indirectly as it passes by, avoiding the interference of the damping system that prevents direct measurement on the wagon. The fixed sensors act as a mediator that captures swing data without being affected by the wagon's internal damping mechanisms.
Solution Approach 2:
The patent replaces the mechanical sensor installation on the wagon with an optical/electronic sensing system fixed on the track infrastructure. This substitution eliminates the need for mechanical coupling between sensors and the wagon, thereby avoiding the damping system's interference with measurement accuracy. The system uses non-contact or minimal-contact sensing methods to detect swing parameters.
2Device complexity
If the angle of attack between wheels and tracks is measured, then the measurement system is simple to implement, but it provides inaccurate data that does not reflect the real wagon swing
Solution Approach 1:
The patent uses fixed sensors on the track as an intermediary measurement device that captures wagon swing data without requiring direct attachment to the wagon. This intermediary approach maintains relative simplicity in implementation while achieving accurate swing measurement by observing the wagon's interaction with the track infrastructure rather than measuring internal wheel angles.
Solution Approach 2:
The patent shifts the measurement from the traditional one-dimensional angle of attack at the wheel-rail contact point to a multi-dimensional approach using fixed sensors that can capture swing parameters from multiple angles and positions as the wagon passes by. This dimensional change enables comprehensive swing assessment while maintaining system simplicity.
3Stability of the object's composition
If damping systems are used to reduce vibrations and swings, then wagon stability is improved, but the damping system prevents accurate measurement of the swing it is meant to control
Solution Approach 1:
The patent introduces fixed sensors on the track infrastructure as an intermediary measurement system that observes wagon swing externally. This intermediary approach allows accurate measurement of the swing that the damping system controls, without being interfered with by the damping mechanism itself. The measurement system and damping system operate independently, with the sensors capturing data as the wagon passes by.
Solution Approach 2:
The patent performs swing measurement at a specific location and time when the wagon passes through the fixed sensor array, capturing the swing characteristics before the damping system fully dampens the motion. This preliminary measurement action enables accurate assessment of swing parameters while the wagon is still exhibiting measurable oscillations.
Data Source
AI summary
A system (1) and method for the detection of wagon swing (6) are provided. Wagon swing is detected by specific sensors (5a, 5b, 5c, 5d) when a wagon (6) presents excessive swing when passing through a certain section of a railway track (2), in which such detection is made by measuring specific distances, advantageously disregarding an angle of attack of the wagon wheels (6) measured between an axis of such wheels and a horizontal plane on which railway tracks (2) are located.