Train-Ground Interlocking for Active Rail Resource Locking
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Solution Overview
Problem
Existing rail transit train operation control systems lack direct involvement of the train in interlocking processes, leading to inconsistent interlocking statuses and potential safety hazards due to indirect wayside control.
Innovation Solution
A train-ground interlocking method where the train actively manages interlocking by calculating required resources, requesting locks, and releasing them upon use, ensuring consistency between its movement behavior and interlocking status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the train is taken as the subject of resource management and actively manages interlocking status, then the consistency between train behavior and interlocking status is improved, but the device complexity increases
Solution Approach 1:
The train is empowered to actively manage its own interlocking status by initiating interlocking requests, querying equipment statuses, and releasing resources after use. This self-service approach ensures the train directly controls its interlocking relationships, guaranteeing consistency between actual train behavior and interlocking status without requiring external management.
Solution Approach 2:
The interlocking control function is segmented between the train (carborne controller) and the wayside (information controller). The train handles initiation, querying, and release of interlocking requests, while the wayside handles equipment control and status management. This segmentation distributes complexity across multiple components rather than centralizing it.
2Productivity
If the train actively initiates interlocking requests and manages resource allocation, then the resource utilization efficiency is improved, but the operation complexity increases
Solution Approach 1:
The train proactively initiates interlocking requests before needing to use equipment, queries equipment statuses in advance, and plans resource allocation ahead of time based on its movement plan. This preliminary action allows the train to secure necessary resources before they are needed, improving utilization efficiency while maintaining systematic control.
Solution Approach 2:
The train actively queries the actual statuses of interlocked equipment and receives feedback from the information controller about allocation and locking states. This feedback mechanism ensures the train has accurate information for decision-making, allowing it to manage resources efficiently while maintaining awareness of system state without excessive complexity.
3Device complexity
If the interlocking status is only controlled at wayside, then the system architecture is simplified, but the safety protection capability deteriorates
Solution Approach 1:
The control architecture transitions from a single-dimension wayside-only control to a two-dimension distributed control system involving both the train (carborne controller) and the wayside (information controller). This dimensional change allows safety-critical functions to be distributed to the train while maintaining centralized coordination at the wayside, improving safety without excessive architectural complexity.
Data Source
AI summary
The present disclosure relates to a train-ground interlocking method and system for rail transit train operation control. In the train-ground interlocking method, a train is taken as a subject of wayside and carborne resource management, and the train actively calculates a required resource according to a “movement mission”, applies to a wayside at an appropriate time and location, uses the resource after obtaining a resource use authority, and actively releases the resource after use of the resource; and once the wayside allocates the resource to one of other trains, the resource cannot be reallocated without being released by the train. Compared to the prior art, the present disclosure has the following advantages: interlocking control of integration of the train and wayside equipment is achieved, rail transit is improved from original passive and indirect interlocking control of the train to active and direct interlocking control of the train, the train safety protection function and the utilization efficiency of wayside resources are further improved, and safe, timely and appropriate match between a movement behavior of the train and a status of the wayside equipment is truly realized.