Railway Traffic Management via Dynamic Track Resource Sharing
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Solution Overview
Problem
Current railway network management systems cannot share resources between trains, leading to increased average time intervals between consecutive trains due to allocated resources being unavailable for other trains.
Innovation Solution
Implementing a system with on-board controllers and ground controllers that manage track resources through double-entry log tables, allowing for the sharing of resources between trains by dynamically allocating and releasing track resources based on compatible circulation constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If track resources are allocated exclusively to a single train, then train safety and operational control are improved, but the average time interval between consecutive trains increases due to resource unavailability for other trains
Solution Approach 1:
The patent implements dynamic resource allocation where track resources can be shared between multiple trains based on real-time operational conditions. The system transitions from static exclusive allocation to dynamic shared allocation, allowing resources to be allocated to one train and then shared with another train when the first train has cleared the resource, thereby reducing time intervals while maintaining safety through continuous monitoring and control.
Solution Approach 2:
The system changes the allocation state parameter from binary (allocated/unallocated) to a more nuanced state that allows partial sharing. By introducing the concept of resource sharing with conditional allocation, the system modifies how resources are assigned based on train positions, speeds, and track conditions, enabling tighter scheduling while maintaining safety requirements.
2Productivity
If track resources are shared between multiple trains, then the average time interval between consecutive trains is reduced, but the complexity of resource management and control increases
Solution Approach 1:
The patent segments the track network into multiple independent resources (tracks, sections, stations) that can be managed separately. Each segment can be allocated to different trains based on specific conditions, allowing the complex sharing problem to be broken down into manageable units. This segmentation enables the system to handle multiple trains simultaneously without overwhelming complexity in any single resource management area.
Solution Approach 2:
The system implements continuous feedback mechanisms where ground controllers monitor train positions, speeds, and resource usage in real-time. This feedback allows the system to dynamically adjust allocations, ensure safety conditions are met, and optimize resource sharing. The feedback loop enables the complex control system to adapt to changing conditions automatically, reducing the need for manual intervention and simplifying overall management.
3Loss of time
If resources are allocated to maximize train circulation efficiency, then waiting times are reduced, but the risk of resource conflicts and safety issues increases
Solution Approach 1:
The system performs preliminary actions by calculating and verifying safety conditions before allocating resources to multiple trains. Ground controllers assess train positions, speeds, and required clearances in advance to ensure that shared resources will not create safety conflicts. This preliminary verification allows the system to optimize circulation efficiency while preventing safety issues before they occur.
Solution Approach 2:
The ground controller acts as an intermediary between trains and track resources, managing the allocation and sharing process. This intermediary role allows the system to coordinate multiple train requests, verify safety conditions, and allocate resources optimally without direct train-to-train conflict. The ground controller mediates the complexity, ensuring both efficiency and safety in resource sharing.
Data Source
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AI summary
The installation (15) has on-board controllers (18) fixed on a ground (16) and consignment tables, and channel resources (2-6) adapted to a single controller. Each table is fixed to each resource and used to store data relating to management of vehicles. A resources authorization and release unit defines a first vehicle (12) of an electronic bulletin logging to permit entry of resources of a second vehicle. A reading unit and a checking unit allow entry of the second vehicle on a track resource only if the electronic bulletin logging issued by the first vehicle permits entry of the resources. An independent claim is also included for a method for managing vehicle traffic on a railway network.