Railway Switch Defect Bypass and Occupancy Control
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Solution Overview
Problem
Defective rail switches in track systems lead to unnecessary track occupancy reports, causing significant impairment of rail traffic and reducing system availability, as adjacent sections are marked as occupied, affecting both the defective section and safety-relevant distances.
Innovation Solution
A method and system that generate a message signal indicating a defective rail switch's position, allowing for the analysis of bypass options and proposing alternative routes that minimize track section failures, ensuring the defective switch is not part of the new route, and using dual-subsystem rail switches to verify axle counts and generate accurate occupancy messages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rail switch is defective, then safety precautions require marking adjacent track sections as occupied, but this causes significant impairment of rail traffic and reduces system availability
Solution Approach 1:
The track system is segmented into multiple independent track sections with individual rail switches. When a defect occurs in one rail switch, only the specific track section associated with that switch is marked as occupied, rather than marking entire adjacent sections. This segmentation allows other parts of the track system to remain operational, maintaining rail traffic availability while preserving safety through localized protection.
2Reliability
If a rail switch defect causes extensive track sections to be marked as occupied, then safety is maintained, but the defect permanently unavailable track sections and reduces system availability
Solution Approach 1:
The system applies local quality by implementing differentiated occupancy marking based on the specific location and nature of the defect. Instead of uniformly marking all adjacent track sections as occupied, the system precisely identifies and marks only the specific track section where the defect exists. This localized approach maintains safety protection at the defect site while minimizing the time loss for the overall track system, allowing other sections to remain available for rail traffic.
3Reliability
If the system marks all adjacent track sections as occupied in response to a rail switch defect, then dangerous situations are prevented, but this results in unnecessary track occupancy reports and traffic impairment
Solution Approach 1:
The system performs preliminary action by pre-defining the exact boundaries and relationships between track sections and their associated rail switches. When a defect is detected, the system immediately identifies the precise track section that requires occupancy marking based on pre-established safety parameters, rather than requiring complex real-time analysis. This preliminary configuration enables the system to generate accurate occupancy reports with minimal complexity, preventing dangerous situations while avoiding unnecessary traffic impairment.
Data Source
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AI summary
The invention relates to a method for operating a track system (GA) with a first track section (GS1) and a second track section (GS2), with at least one switch (W) comprising a main direction (SR) and adjustable in at least one branch direction (ZR), and with a first rail switch (AZ1) arranged in the main direction (SR) on the first track section (GS1) behind the switch (W), wherein a system control (AS) of the track system (GA) generates a message signal in the event of a defect of the first rail switch (AZ1), which contains at least one indication to set the switch (W) in the branch direction (ZR) so that an alternative route (FW) can be used.