Train Running Control Unit for Delay Propagation
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Solution Overview
Problem
Conventional train-running management devices do not effectively consider the running conditions of subsequent trains, leading to potential delay propagation in a chain reaction, which can negatively impact the punctuality of subsequent trains.
Innovation Solution
A train-running management device that includes a ground running control unit, which groups a control-target train with preceding and subsequent trains, and adjusts the running pattern to have the control-target train decelerate significantly after high-speed departure, thereby reducing the impact on subsequent trains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the control-target train maintains high speed running to improve its own punctuality, then the arrival time punctuality of the control-target train is improved, but the delay propagates to subsequent trains in a chain reaction
Solution Approach 1:
The ground running control unit preemptively adjusts the running pattern of the control-target train by applying deceleration after high-speed departure when it is determined that the train affects a subsequent train. This preliminary action prevents delay propagation to subsequent trains before the delay can occur, resolving the contradiction between maintaining punctuality and preventing chain reaction delays
Solution Approach 2:
The system performs preliminary determination of whether the control-target train affects a subsequent train, and accordingly adjusts the running pattern in advance. By calculating and applying the appropriate deceleration before the delay propagation occurs, the system ensures both the control-target train's punctuality and prevents negative impact on subsequent trains
2Loss of time
If the conventional technique adjusts speed based on preceding train status, then the control-target train's arrival punctuality is improved, but insufficient consideration is given to subsequent train conditions
Solution Approach 1:
The ground running control unit merges the consideration of the control-target train with its preceding and subsequent trains into a unified control group. By determining whether the control-target train affects a subsequent train and adjusting the running pattern accordingly, the system comprehensively considers the entire train group's running conditions, not just individual train punctuality
Data Source
AI summary
When it is determined that a control-target train has an impact on a third train that is other than a train that is determined to affect the control-target train, a ground running control unit of a train-running management device further changes a running pattern and instructs the control-target train to take less time to completely leave a departure station.