Electromagnetic Rail Brake Testing via Multi-Controller Coordination
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Solution Overview
Problem
Existing methods for brake testing of magnetic rail brake units in rail vehicles only monitor current flow and do not reliably detect contact between brake pads and the rail edge, limiting diagnostic capabilities.
Innovation Solution
A method utilizing a vehicle controller, brake controller, drive controller, and independent monitor coupled via a data transmission system to perform a brake test, including phases for verification and standstill monitoring, which measures current values and braking torque to ensure secure contact with the rail edge, and includes semi-automatic or fully automatic monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only current flow is monitored during brake testing, then the monitoring system remains simple, but the ability to reliably detect brake pad contact with rail edge is insufficient
Solution Approach 1:
The patent combines multiple monitoring functions (current monitoring, torque monitoring, standstill monitoring) into a coordinated brake testing system. The vehicle controller, brake controller, drive controller, and independent monitor work together through a data transmission system to comprehensively detect brake pad contact by integrating electrical current measurements with mechanical torque measurements and vehicle speed/position status.
Solution Approach 2:
The monitoring system is designed to perform multiple functions simultaneously: it monitors electrical current through sensors, measures braking torque through the drive controller, verifies vehicle standstill status, and coordinates between multiple control units. This multi-functional approach enables reliable detection of brake pad contact using existing system components.
2Adaptability or versatility
If a single control unit is used for brake testing, then the system structure remains simple, but the ability to perform comprehensive brake testing with multiple parameters is limited
Solution Approach 1:
The brake testing system is segmented into specialized control units: a vehicle controller for overall coordination, a brake controller for brake-specific operations, a drive controller for torque measurement and drive coordination, and an independent monitor for safety verification. Each unit handles specific aspects of the testing, allowing comprehensive multi-parameter testing while maintaining clear functional separation.
Solution Approach 2:
A data transmission system acts as an intermediary between the multiple control units, enabling communication and coordination. This mediator allows the segmented control units to exchange information about current measurements, torque values, standstill status, and test results, achieving comprehensive testing capability while maintaining modular system architecture.
3Reliability
If brake testing is performed without standstill verification, then the testing process is faster, but safety is compromised when vehicle movement occurs during testing
Solution Approach 1:
The system performs preliminary standstill verification before initiating brake pad contact detection. The drive controller and independent monitor verify that the vehicle is stationary and maintain this verification throughout the testing process. This preliminary and continuous standstill check ensures safety is established before critical measurements are taken.
Solution Approach 2:
The system continuously monitors vehicle standstill status during brake testing and provides feedback to the control units. If movement is detected, the system can abort the test or alert operators, ensuring that testing conditions remain safe. This real-time feedback mechanism maintains safety without requiring excessively long testing durations.
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 detection of brake pad contact with the rail edge and monitoring of braking torque for each pair of brakes, ensuring accurate brake testing and safety by preventing continued testing if contact is lost, thereby enhancing diagnostic accuracy and safety.
Implementation Method 1
Braking is generated by energizing magnetizable brake blocks via electromagnets. The resulting magnetic forces press the brake blocks against a running rail, generating a braking force through friction.
Implementation Method 2
The resulting magnetic forces press the brake blocks against a running rail, generating a braking force through friction.
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
The invention relates to a method for carrying out a braking test on at least one electromagnetic rail brake unit of a rail vehicle, wherein a braking effect of each brake pair (1) is tested up to n of the electromagnetic rail brake unit in a stationary state of the rail vehicle, with - a starting phase, - in each case a testing phase for each brake pair (1) up to n of the electromagnetic rail brake unit and - a terminating phase. In order to provide a method for carrying out a braking test at at least one electromagnetic rail brake unit of a rail vehicle, with which it is possible not only to measure a current but also to reliably detect the setting down of brake blocks on an upper edge of a rail, the braking test is carried out by a vehicle controller, a brake controller, a drive controller and an independent monitoring system, which are coupled to one another via a data transmission system.