Rail Brake Vibration Testing for Automated Pre-Operation Checks
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Solution Overview
Problem
Existing brake testing methods for rail-guided vehicles are laborious, complex, and prone to mechanical failures, particularly in freight trains with diverse braking systems, and do not allow for efficient automated testing before operation.
Innovation Solution
A method utilizing a vibratory system comprising wheels and brakes, where an actuator generates vibrations, which are measured by a sensor, and compared to reference results to determine the applied or released state of the brakes, enabling automated brake testing through a computing environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual brake testing is performed by technicians circumnavigating the train, then brake function can be checked, but the process is laborious and time-consuming
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated sensor-based measurement system. Sensors detect vibration characteristics of the brake system to automatically determine brake state, eliminating the need for technicians to physically circumnavigate and manually check each brake component.
Solution Approach 2:
The brake testing system performs self-verification through automated sensors and evaluation units that continuously monitor brake function. The system independently assesses its own operational state without requiring external manual inspection, enabling autonomous brake testing.
2Productivity
If multiple sensors and mechanical devices are deployed for automated brake testing, then testing efficiency improves, but device complexity and mechanical failure risk increase
Solution Approach 1:
The patent extracts the essential diagnostic information by focusing solely on vibration characteristic measurements. Instead of deploying multiple sensors for comprehensive monitoring, the system uses vibration data as the primary and sufficient indicator of brake function, simplifying the overall test setup.
Solution Approach 2:
The evaluation unit serves multiple functions: it processes vibration signals, determines brake state, compares measurements against reference values, and generates test results. This multi-functional approach consolidates what would otherwise require separate dedicated devices for each function.
3Loss of information
If pressure-based brake testing methods are used, then brake system operation can be monitored, but only overall train braking function can be assessed
Solution Approach 1:
The patent applies local quality assessment by measuring vibration characteristics at specific locations along the train. Each measurement point provides localized information about the brake system state at that particular position, enabling component-level diagnostics rather than only overall system monitoring.
Solution Approach 2:
The system uses mechanical vibration as the measurement principle to detect brake state. Vibration sensors capture characteristic vibrations generated by brake components, providing precise local information about brake function that pressure-based methods cannot detect.
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, automated brake testing before operation, reducing manual effort and mechanical complexity, and allowing for real-time identification of brake system errors.
Implementation Method 1
a vibration is generated in a vibratory system, which includes brakes and wheels of the relevant vehicle, by an actuator
Implementation Method 2
the generated vibration in the relevant vibratory system is recorded by a sensor as a first measurement result
Data Source
AI summary
A brake testing method in rail-guided vehicle assemblies checks properly applied and released brakes. When applied, an actuator generates vibration in a vibratory system including brakes and wheels. A sensor records the vibration as a first measurement result for the applied state and subsequently an actuator generates vibrations in the released state. The vibration is recorded by the sensor as measurement result for the released state and a computer aids in comparison of first measurement results with first reference results for the released state and/or second measurement results with second reference results for the applied state and/or first measurement results with second measurement results and compares difference results with third reference results. Upon deviations outside a tolerance between measurement and/or difference results and associated reference results, a computer aides generating an error signal. A rail-guided vehicle, computer program and computer-readable storage medium are also provided.