Train Release Speed Control for Dynamic Target Section Entry
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Solution Overview
Problem
Current railway signaling systems lack efficient methods for optimizing train entry into target sections, particularly in complex and congested areas, without requiring significant investment or engineering, while ensuring safety and flexibility in track use.
Innovation Solution
A method for dynamically determining the release speed of a train based on its characteristics and the available overrun distance, allowing continuous or event-driven adjustments to ensure safe and flexible train entry into target sections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If additional track sections and signals are introduced to increase throughput, then capacity increases, but system complexity and data manageability deteriorate
Solution Approach 1:
The invention changes the parameter of release speed from a fixed value to a dynamically determined value based on train characteristics and overrun distance. This allows the system to optimize throughput by adjusting release speed according to actual conditions rather than using a conservative fixed value, thereby increasing capacity without adding infrastructure complexity
Solution Approach 2:
The invention uses virtual copying of track sections through the concept of overrun distance and virtual target points. Instead of physically subdividing track sections with additional signals, the system creates virtual representations that allow multiple trains to be managed efficiently, increasing throughput without adding physical signaling infrastructure
2Reliability
If release speed is fixed at a low value for safety, then safety is ensured, but train entry speed and throughput deteriorate
Solution Approach 1:
The invention makes the release speed dynamic rather than fixed. The release speed is continuously adjusted based on train characteristics (length, braking capacity) and available overrun distance, allowing the system to maintain safety while optimizing entry speed for each specific situation, thereby resolving the contradiction between safety and speed
3Ease of operation
If fixed release speed is used, then system simplicity is maintained, but operational flexibility and throughput deteriorate
Solution Approach 1:
The system performs self-service by automatically determining optimal release speeds based on train characteristics and track conditions. The control system autonomously calculates and adjusts release speeds without requiring manual intervention, maintaining operational simplicity while achieving optimized throughput through dynamic adaptation to varying conditions
Data Source
Figure 1~2
AI summary
The present invention discloses a method for optimized train entry into a target section by dynamically determining the release speed (12) or (14) for a train (2) whose entry into the target section (6), secured by a target point (4) and located upstream of the target point (4) in the direction of travel of the train (2), is planned, comprising the following method steps: a) communicating characteristics of the train (2) to a control system for train dispatching that also covers this track section (6); b) assigning, on the control system and interlocking side, an overrun path (10) for this train (2) that depends on the characteristics of the train (2) and is subordinate to the target point (4);and c) Control system-side initiation and interlocking/RBC-side granting of a movement authority for the train (2) authorizing entry into the target section (6), wherein the release speed is initially determined based on the characteristics of the train and the overrun distance assigned to this train (2) on the basis of the risk acceptance criteria defined by a railway operator and displayed in the onboard unit of the train (2), wherein this determination of the release speed based on the currently available and secured overrun distance is continuously and/or event-oriented repeated before or during the entry of the train (2) and the previously specified release speed is increased if the newly determined value for the release speed (14) is greater than the previously specified value for the release speed (12).