Railway Wagon Swing Detection via Track-Mounted 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 assess the damping system's integrity effectively.
Innovation Solution
A system and method using a set of fixed sensors spaced apart and installed on a railway track to measure the wagon's angle of inclination relative to its centerline, allowing for the detection of swing parameters like amplitude, frequency, and damping factor, independent of wheel angle measurements, and providing a real damping curve for assessing the damping assembly's integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sensors are installed on the wagon to measure oscillations, then the measurement system is portable and easy to install, but the damping system masks the true wagon swing by absorbing oscillations
Solution Approach 1:
The patent introduces an external measurement system (laser sensors, cameras, or radar) positioned on the track infrastructure as an intermediary to measure wagon swing. This external position allows direct observation of the wagon's motion without being affected by the damping system's absorption of oscillations, thereby achieving both ease of installation and accurate measurement of true wagon swing.
2Reliability
If sensors are installed on the axle to measure angle of attack, then the measurement is directly related to wheel-track interaction, but the angle of attack does not reflect the actual wagon rocking inclination
Solution Approach 1:
The patent extracts the measurement function from the wheel-axle system and places it on the track infrastructure. By using external sensors to directly observe the wagon's motion, the system separates the measurement of wagon swing from the wheel-track interaction parameters, thereby obtaining accurate wagon inclination data that is not confounded by the damping system's effect on wheel dynamics.
3Stability of the object's composition
If the damping system is designed to absorb oscillations, then wagon stability is improved, but the ability to detect and monitor true wagon swing is reduced
Solution Approach 1:
The patent uses an external measurement system as an intermediary that observes the wagon's motion from the track infrastructure. This external position allows the system to capture information about the wagon's swing that would otherwise be absorbed or masked by the damping system, thereby maintaining both wagon stability and information about true swing characteristics for monitoring purposes.
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 accurate detection and classification of wagon swing, allowing for selective maintenance and ensuring the damping assembly's integrity, providing precise data for maintenance history and identifying potential instability issues.
Implementation Method 1
a set of fixed sensors, spaced apart, arranged at a certain height from the ground and installed on a section of a railway track, the system being configured to obtain at least one angle of inclination of a car in relation to its center line
Data Source
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AI summary
The present invention relates to a system (1) and method for the detection of wagon swing (6), through which it 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.