Train Emergency Stop Zone Selection Using On-Board Route Maps
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Solution Overview
Problem
Existing methods for emergency stops in trains rely heavily on human driver judgment, which can lead to unsuitable or unsafe stopping locations due to varying reaction times and situational awareness, particularly in emergency situations.
Innovation Solution
A method that analyzes the train's route beforehand to identify suitable emergency stop zones and prevention zones, using on-board electronic maps and automatic systems to determine the train's position and initiate precise braking to reach these zones autonomously, with optional driver intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the train driver manually assesses and selects the emergency stop location, then the driver can consider the situation and make judgment calls, but the reaction time is prolonged and the stopping location may be unsuitable due to human error
Solution Approach 1:
The system pre-analyzes the route before the train journey starts, identifying suitable emergency stop zones and prevention zones in advance. These zones are stored in the vehicle control system, so when an emergency stop is requested, the system can immediately query the pre-prepared list without time-consuming analysis, thus reducing reaction time while ensuring reliable stopping location selection
Solution Approach 2:
The patent replaces the manual mechanical assessment process of the train driver with an automated electronic system. The vehicle control system automatically queries the stored zone information based on the train's current position and determines the appropriate emergency stop location without human intervention, eliminating reaction time delays and human error while maintaining high reliability
2Loss of time
If the emergency stop is executed immediately upon request, then the stopping time is minimized, but the train may stop at unsafe locations such as bridges or tunnels
Solution Approach 1:
The system continuously monitors the train's position and automatically queries the stored emergency stop zone information to determine whether the current location is suitable for stopping. The system provides feedback by comparing the train's real-time position with the pre-defined zones, enabling immediate emergency stop execution only when safe locations are identified, thus preventing stops at hazardous locations like bridges or tunnels
Solution Approach 2:
The patent introduces an intermediate automated decision-making layer between the emergency stop request and the actual braking execution. The vehicle control system acts as an intermediary that automatically determines suitability based on pre-stored zone data, allowing immediate response while ensuring safety by preventing stops at unsafe locations without requiring manual driver assessment
3Reliability
If the route analysis is performed in real-time during the emergency, then the most current information is used, but the processing time increases significantly
Solution Approach 1:
The system performs the computationally intensive route analysis before the train journey starts, identifying all suitable emergency stop zones and prevention zones along the route. This pre-processed information is stored in the vehicle control system, so during an actual emergency, the system only needs to query the pre-analyzed data based on current position, ensuring both high accuracy and rapid response without real-time processing delays
Data Source
AI summary
A method carries out a requested emergency stop for a train in order to bring the train to a stop at a suitable point on the route travelled by the train. On the train side, a list is provided in which, for the route to be travelled by the train, zones are defined where the train is allowed to stop and/or is not allowed to stop in the event of a requested emergency stop. When the train is travelling, a request for an emergency stop is automatically recorded and analyzed by the train without the involvement of the driver. The train carries out an automated determination of the position of the train in relation to the route being travelled, which is carried out independently of route-side apparatuses. Depending on the position of the train, a suitable zone where the train can be brought to a standstill for the emergency stop to be carried out is automatically selected from the list.