Train Identification Using Wheel Sensors
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Solution Overview
Problem
Existing methods for automatically identifying train information, such as distinguishing between passenger and goods trains, are unreliable due to environmental influences and require precise sensor placement, and fail to provide accurate speed, segmentation, or locating information.
Innovation Solution
A system using wheel sensors mounted on the railway to measure speed and wheelbases, combined with database analysis and additional devices like X-ray inspection systems, to accurately identify train types and provide comprehensive information including arrival and departure times, carriage numbers, and segmentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If photoelectric sensors are used to detect carriage gaps, then train type identification can be achieved, but the system becomes susceptible to environmental influences such as sunlight, rain, snow, and insects
Solution Approach 1:
The patent replaces photoelectric sensors with wheel sensors that detect wheel passages mechanically. This substitution eliminates the susceptibility to environmental factors like sunlight, rain, snow, and insects that affect photoelectric sensors, while maintaining the ability to identify train types through gap detection between carriages.
Solution Approach 2:
The patent introduces wheel sensors as an intermediary element between the train wheels and the detection system. These sensors detect wheel passages and provide signals that are processed to identify train types, thereby avoiding direct exposure to environmental conditions that would affect photoelectric sensors.
2Measurement precision
If between-wheel spacing method is used with 4 magnetic sensors, then train type distinction can be made, but the method has high requirements for sensor positioning and is limited in train types
Solution Approach 1:
The patent extracts the essential function of wheel passage detection from the complex between-wheel spacing method. By using wheel sensors that simply detect when wheels pass by and calculating intervals between these passages, the system achieves train type identification without requiring precise sensor positioning or complex multi-sensor arrangements.
Solution Approach 2:
The patent changes the measurement parameter from fixed wheelbase distances (requiring precise sensor placement) to time intervals between wheel passages. This parameter transformation allows the system to adapt to various train types and configurations without requiring complex sensor positioning, as the wheel sensor system naturally captures the temporal patterns of different train compositions.
3Reliability
If existing identification methods are used, then basic train type distinction can be achieved, but accurate speed, segmentation, and locating information cannot be provided
Solution Approach 1:
The patent makes the wheel sensor system multi-functional by using it not only for train type identification but also for measuring train speed, determining carriage segmentation, and locating specific carriages. The same wheel passage detection data is processed through different algorithms to extract multiple types of information, eliminating the need for separate sensing systems for each function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system provides accurate identification of train types and information, unaffected by environmental factors and carriage shapes, with improved reliability and flexibility compared to prior methods, enabling efficient inspection and data collection.
Implementation Method 1
A system using wheel sensors mounted on the railway to measure speed and wheelbases
Data Source
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AI summary
The present invention relates to a method and system for automatically identifying various information of a train. The method comprises using sensors to collect wheelbase information, processing the information by signal data processing devices, thereby providing information of a train, namely: arranging a plurality of sensors along the rail in the incoming direction of the train, dividing the sensors into at least three groups, each group comprising at least two sensors; analyzing and processing the signal data stream obtained from the sensors and collected when a train vehicle passes by, thereby acquiring the speed and wheelbase of the train, and further acquiring the train segmentation information; determining the vehicle type; acquiring hook locating information; determining the train arrival; determining the train departure; acquiring vehicle number. The present invention further comprises a system for carrying out the information method for automatically identifying information of a train. The present invention can provide a plurality of types of train information with high accuracy, and is easy to be carried out.