Trackside Device Re-initialization via Neighbor Data Exchange
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Solution Overview
Problem
Current systems for determining the occupancy state of a track section in a railway network face challenges, particularly when a trackside device fails, leading to decreased safety and increased time for re-initialization, as they require proximity to compared objects and manual intervention, which can result in delayed movement authority for guided vehicles.
Innovation Solution
A method and system where a trackside device calculates the subsequent number of guided vehicles on a track section by gathering information from neighboring trackside devices regarding vehicles entering and leaving adjacent sections, allowing for continuous monitoring and rapid re-initialization after a failure, using known techniques like track vacancy detection and position reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional track occupancy determination methods are used after a trackside device failure, then safety conditions must be strictly verified and manual intervention required, but this leads to increased re-initialization time and delayed movement authority delivery
Solution Approach 1:
The system performs preliminary actions by having neighboring trackside devices continuously monitor and report vehicle entry/exit counts before a failure occurs. When a device fails, this pre-collected data is immediately available for rapid re-initialization without requiring manual verification or prolonged safety checks
Solution Approach 2:
The failed trackside device automatically re-initializes itself using occupancy data received from neighboring devices without requiring manual intervention. The system serves itself by leveraging distributed information from other devices to restore functionality independently and rapidly
2Reliability
If manual verification and proximity checks are performed for track occupancy determination, then safety is maintained, but this increases operational complexity and delays movement authority issuance
Solution Approach 1:
Neighboring trackside devices act as intermediaries that provide occupancy information to the failed device. This intermediary data transfer mechanism maintains safety verification while eliminating the need for complex manual procedures and proximity checks at the failed device location
Solution Approach 2:
The system implements continuous feedback loops where neighboring devices report vehicle occupancy status to the failed device. This automated feedback mechanism replaces manual verification processes, maintaining safety through continuous monitoring while reducing operational complexity
3Loss of time
If continuous monitoring of track occupancy is implemented using neighboring devices, then rapid re-initialization is achieved, but this increases communication and data processing requirements
Solution Approach 1:
The monitoring function is segmented and distributed across multiple neighboring trackside devices rather than requiring centralized continuous monitoring. Each device independently tracks vehicle entry/exit counts in its vicinity, reducing individual communication loads while enabling rapid collective re-initialization
Solution Approach 2:
The system recovers occupancy information from neighboring devices that continue to function normally. By discarding the need for complex centralized verification and recovering simple count data from distributed sources, the system achieves rapid re-initialization with minimal communication overhead
Data Source
AI summary
A method and a system determine a subsequent number of guided vehicles occupying a track section of a railway network. The system has a trackside device configured for controlling and managing a movement authority of a guided vehicle for a track section and at least one neighboring trackside device. Each neighboring trackside device is configured for controlling and managing a movement authority for a directly neighboring track section. The trackside device is configured for calculating the subsequent number of guided vehicles from a number of guided vehicles occupying the track section previously determined by the trackside device and information received from each neighboring trackside device regarding a number of guided vehicles entering, from the track section. The directly neighboring track section is controlled by the neighboring trackside device and a number of guided vehicles leaving the directly neighboring track section for the track section.