Beidou Hybrid Positioning for Railway Collision Warning
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Solution Overview
Problem
Current railway safety systems lack effective early warning protection for collision prevention between trains and field workers, with existing technologies experiencing accuracy and reliability issues in positioning and communication, particularly in high-speed railway environments.
Innovation Solution
An early warning protection system utilizing Beidou position automatic sensing, integrating a locomotive train-mounted terminal subsystem, a ground early warning protection platform subsystem, and a handheld terminal subsystem, which employs Beidou positioning and 4G wireless communication to provide high-precision tracking and automatic collision warnings, combining multiple positioning technologies and short message communication for real-time information exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If track circuit positioning is used, then positioning reliability is improved, but positioning accuracy deteriorates
Solution Approach 1:
The patent combines track circuit positioning with satellite positioning (Beidou) to create a hybrid positioning system. The ground early warning protection platform receives positioning information from both sources, processes them together, and uses them to determine train position and calculate safety distances. This merging allows the system to maintain the reliability of track circuits while achieving the accuracy of satellite positioning.
2Measurement precision
If satellite navigation positioning is used, then positioning accuracy is improved, but positioning reliability deteriorates
Solution Approach 1:
The system merges satellite positioning (Beidou) with track circuit positioning to compensate for the reliability issues of satellite-only systems. The ground early warning protection platform processes both positioning information sources, using the track circuit as a backup or validation mechanism for satellite positioning, thereby improving overall system reliability while maintaining high accuracy.
3Object-affected harmful factors
If inductive line positioning is used, then anti-interference capability is improved, but device complexity and maintenance workload increase
Solution Approach 1:
The patent extracts the positioning function from the inductive line system and implements it through satellite positioning (Beidou) combined with ground-based processing. Instead of using complex inductive lines along the track, the system uses satellite signals received by mobile terminals on trains and handheld devices, processed by the ground early warning protection platform, thereby reducing maintenance workload while maintaining anti-interference capability.
4Adaptability or versatility
If wireless positioning is used, then mobility is improved, but positioning reliability deteriorates
Solution Approach 1:
The system merges wireless satellite positioning with track circuit positioning to maintain mobility while improving reliability. The ground early warning protection platform processes positioning information from both sources, using the track circuit as a validation mechanism for wireless satellite positioning, thereby improving overall system reliability while maintaining the mobility advantages of wireless communication.
5Adaptability or versatility
If speed measurement positioning is used, then mobility is improved, but positioning accuracy deteriorates due to error accumulation
Solution Approach 1:
The patent replaces speed measurement positioning (which accumulates errors) with satellite positioning (Beidou) combined with track circuit positioning. The ground early warning protection platform processes positioning information from both sources, providing absolute position fixes that eliminate the error accumulation problem of speed integration while maintaining mobility.
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 achieves high-precision positioning and real-time collision warnings for both trains and field workers, enhancing railway safety by leveraging Beidou satellite technology and 4G communication, addressing the limitations of previous systems in accuracy and reliability.
Implementation Method 1
the ground early warning protection platform subsystem performs judgment processing on train-to-train and train-to-person early warning logics according to Beidou positioning, a train speed, and train direction information provided by the locomotive train-mounted terminal subsystem and Beidou positioning information of the handheld terminal subsystem
Implementation Method 2
combining multiple positioning technologies and short message communication for real-time information exchange
Data Source
AI summary
The present invention relates to an early warning protection system based on Beidou position automatic sensing, the system is in communication connection with a TDCS/CTC system, and the early warning protection system includes a locomotive train-mounted terminal subsystem, a ground early warning protection platform subsystem, and a handheld terminal subsystem, the ground early warning protection platform subsystem is in communication connection to the TDCS/CTC system, the locomotive train-mounted terminal subsystem, and the handheld terminal subsystem respectively; and the ground early warning protection platform subsystem performs judgment processing on train-to-train and train-to-person early warning logics according to Beidou positioning, a train speed, and train direction information provided by the locomotive train-mounted terminal subsystem and Beidou positioning information of the handheld terminal subsystem and with reference to station information and train number information sent by the TDCS/CTC system and line data and data of a virtual transponder, and forwards processed early warning information to the locomotive train-mounted terminal subsystem and the handheld terminal subsystem. Compared with the prior art, the present invention has the advantages of implementing early warning and protection for railway construction personnel, a train, and the like.