Railway Vehicle Presence Detection Using Axle Count Discrimination
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Solution Overview
Problem
Current methods for discriminating the presence of a railway vehicle on a block, especially with small vehicles, are inadequate as they often fail to accurately determine if a single vehicle is present due to length limitations, leading to potential safety issues either by ignoring small vehicles or requiring manual intervention.
Innovation Solution
A method involving on-board and ground-based components that utilize axle counters and secondary detection devices to determine the presence of a railway vehicle by transmitting and comparing the number of axles on a block to the number of axles of the vehicle, ensuring accurate discrimination without operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the distance-based sweeping method is used to discriminate vehicle presence, then the system is simple to operate, but it fails to accurately detect small vehicles whose length is less than the distance to adjacent blocks
Solution Approach 1:
The patent changes the detection parameter from distance-based (sweeping method using distance to adjacent blocks) to axle-count-based (comparing detected axles with expected axles). This parameter change enables accurate detection of small vehicles regardless of their length, as axle count remains a reliable identifier even when distance-based methods fail.
Solution Approach 2:
The patent replaces the mechanical distance-based sweeping detection with an axle counting system that uses secondary detection devices to count axles on each block. This substitution eliminates the limitation of small vehicle detection while maintaining system simplicity through automated axle comparison.
2Reliability
If small vehicles are ignored in the traffic management system, then the system operation remains simple, but safety problems occur due to undetected vehicles
Solution Approach 1:
The system performs self-service by automatically comparing the number of axles detected on each block with the expected number of axles for vehicles present. This automated axle-based discrimination eliminates the need for manual intervention while ensuring small vehicles are detected, thereby maintaining both safety and ease of operation.
Solution Approach 2:
The system uses feedback from secondary detection devices that continuously monitor and count axles on each block. This real-time axle count feedback is compared with expected values to automatically determine vehicle presence, ensuring safety without compromising automatic operation.
3Measurement precision
If manual operator intervention is used to discriminate vehicle presence, then detection accuracy improves, but the system loses automatic operation capability and introduces human error risks
Solution Approach 1:
The system achieves self-service through automated axle counting and comparison. Secondary detection devices automatically count axles on each block, and the ground computer automatically compares these counts with expected values to determine vehicle presence, eliminating manual intervention while maintaining high detection accuracy.
Solution Approach 2:
The patent replaces manual operator discrimination with an automated axle-based detection system. The ground computer automatically processes axle count data from secondary detection devices and determines vehicle presence, substituting human judgment with reliable automated computation that maintains both accuracy and automation.
Data Source
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AI summary
The invention relates to a method for discriminating the presence of a vehicle (2) on a section (6C) of a railway track (4), comprising the steps of: - transmission, from a computer (14) on board the vehicle (2) to a ground computer (12), of information relating to the number of axles of the vehicle (2); - transmission, over time, by track sensors (8) associated with said section (6C) and with adjacent sections (6B, 6D) of said section (6C), to a ground computer (12), of information relating to the number of axles present in the corresponding section (6B, 6C, 6D); - discrimination by the ground computer (12) of the presence of said vehicle (2) on said section (6C) if the number of axles present on said section (6C) is equal to the number of axles of said vehicle (2), and if the number of axles present on each of the adjacent sections (6B, 6D) is zero.