Train Speed Control via Dynamic Zone Expansion
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Solution Overview
Problem
Autonomous trains face challenges in reliably detecting obstacles on the track and initiating appropriate braking measures, as current systems often result in unnecessary rapid braking for harmless objects and fail to detect dangerous ones in time.
Innovation Solution
A computer-implemented method that dynamically adjusts the maximum speed of a train based on environmental parameters and map information to define and expand safety zones, ensuring reliable obstacle detection and appropriate braking responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the train operates at high speed, then productivity is improved, but the ability to detect and respond to obstacles in time deteriorates
Solution Approach 1:
The system performs preliminary actions by determining the dynamic zone and adjusting the maximum speed before the train encounters an obstacle. The control unit calculates the appropriate speed limit based on environmental parameters and map information in advance, allowing the train to maintain optimal speed while ensuring safe stopping distance is available for potential obstacles.
2Ease of operation
If the train maintains a fixed maximum speed, then ease of operation is improved, but adaptability to different environmental conditions deteriorates
Solution Approach 1:
The system implements dynamics by continuously adjusting the maximum speed based on real-time environmental parameters and pre-stored map information. The control unit dynamically recalculates the dynamic zone and speed limits as the train progresses along the route, adapting to changing conditions such as curves, crests, and environmental factors while maintaining automated operation.
3Reliability
If the train brakes immediately upon detecting any obstacle, then reliability of safety is improved, but unnecessary energy loss increases
Solution Approach 1:
The system applies local quality by differentiating between harmful and harmless obstacles based on their characteristics and location within the dynamic zone. The control unit evaluates each detected object individually, initiating emergency braking only for dangerous obstacles that pose a genuine threat, while allowing the train to continue at normal speed for harmless objects like rubbish or leaves, thereby avoiding unnecessary energy loss.
Data Source
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AI summary
The invention relates to a computer-implemented method for providing a maximum speed of a train, comprising the steps of: a. providing at least one environmental parameter (S1); b. providing at least one map information in relation to a train route (S2); c. determining at least one dynamic zone depending on the at least one environmental parameter (S3), wherein the at least one zone defines a distance between an obstacle and the front of the train, wherein the obstacle is located on the route or on a section of the route; d. extending the at least one dynamic zone taking into account the at least one map information (S4); e. adjusting the maximum speed of the train depending on the at least one extended dynamic zone (S5); and f. providing the adjusted maximum speed (S6).Furthermore, the invention relates to a technical system and a corresponding computer program product.