Automatic Railway Traffic Integration for Locomotive Trains
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Solution Overview
Problem
Locomotive-moving trains, which can operate in various configurations such as pulling or pushing cars, or alone, are currently restricted from fully participating in automatic train services due to lack of information on train integrity, leading to reduced performance in automatic train traffic systems.
Innovation Solution
Assigning an erasable traffic restriction mark to the locomotive's position signal, allowing the train to treat traveled sections as occupied and clearing the mark when the next section is free, enabling the locomotive to continue driving in automatic mode, and sending a driving license to the on-board device for mode changes, facilitating integration into automatic train services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If locomotive-moving trains operate without train integrity information, then they can maintain operational flexibility in various configurations, but they are restricted from fully participating in automatic train services
Solution Approach 1:
The system performs preliminary actions by assigning a traffic restriction mark to the locomotive before it enters automatic train service. This mark is placed in advance based on the absence of train integrity information, allowing the locomotive to operate with restricted permissions initially. When the locomotive later transmits position signals and the system can verify its status, the restriction mark is erased and full automatic service participation is granted.
2Productivity
If locomotive-moving trains are integrated into automatic train services, then system efficiency improves, but train integrity monitoring becomes more complex
Solution Approach 1:
The monitoring system is segmented into two distinct approaches: a simplified mode for locomotives without integrity information that uses traffic restriction marks and position signal transmission, and a full mode for locomotives with integrity information that uses complete train status monitoring. This segmentation allows the system to handle different train types with appropriate complexity levels, improving overall system efficiency without unnecessarily complicating the monitoring of all trains.
3Extent of automation
If traffic restriction marks are assigned to locomotives, then automatic train service integration is enabled, but tracking and managing restricted locomotives becomes more complex
Solution Approach 1:
Instead of implementing complex real-time tracking systems for restricted locomotives, the system uses a copying approach where the traffic restriction mark is transmitted as a signal state in position telegrams. The track device receives and processes these mark states as part of the existing position reporting protocol, eliminating the need for separate tracking infrastructure while maintaining effective management of restricted locomotives.
Data Source
AI summary
The invention relates to a method for implementing automatic railway traffic using automatic train control and train protection by means of data communication between an on-board device on a train and a track-side device (8). In order to develop said type of method is such a way that (as many) locomotive-operated trains (as possible) can travel along with automatic trains without notably reducing traffic efficiency for the automatic trains, when a locomotive-operated train (5) is used, upon transmission of a position signal (P) designating the front position of the locomotive (6) of the locomotive-operated train (5), the track-side device (8), after receiving a position signal (P), assigns a deletable front traffic restriction tag (S2) to the locomotive (6), such that the portions of a track section (3) that are located in front of the traffic restriction tag (S2) are treated as being occupied, said track section (3) being used by the locomotive-operated train (5) and being reported as being occupied, and the front traffic tag (S2) is deleted while the locomotive-operated train (5) is allowed to continue its course if the subsequent track section (2) is free when the locomotive (6) arrives at the boundary of track section (3). The invention also relates to a railway traffic system for implementing automatic railway traffic.