Train position monitoring system based on wireless base station and monitoring method thereof

Abstract

The invention discloses a train position monitoring system based on a wireless base station and a monitoring method of the system, which relates to the field of rail traffic train operation monitoring. The system comprises a monitoring center, vehicle-mounted equipment and rail-side equipment; the rail-side equipment comprises a plurality of ground base stations; the ground base stations are respectively connected with the monitoring center through a wired network; the vehicle-mounted equipment comprises a wireless terminal adopting a coded orthogonal frequency division multiplexing (COFDM) technology; the wireless terminal transmits enciphered data to 2 to 4 ground base stations adjacent to the wireless terminal through a wireless special network; the ground base stations convert the enciphered data into IP data and then forward the IP data to the monitoring center to decipher. The invention adopts a COFDM wireless modulation technology, reduces the number of the ground rail-side equipment, reduces the operation and maintenance costs of rail companies, does not depend on speed measuring equipment, has high anti-interference performance and good wireless coverage performance, is more accurate for position monitoring, and guarantees the monitoring reliability of train position.

Description

technical field [0001] The invention relates to the field of rail transit train operation monitoring, in particular to a monitoring method for a train positioning monitoring system based on a wireless base station. Background technique [0002] With the development of society, rail transit has increasingly become an important part of urban traffic, and "safe, fast, accurate and comfortable" has become the goal of rail transit operation. Safety is the top priority of this goal. Train positioning is a very important link in the track operation system. It is an important technical means to eliminate potential safety hazards, guide operation and maintenance, improve train operation management efficiency, and ensure train operation safety. . [0003] Currently, there are two main methods of train positioning: [0004] 1. Card response type, the position of the train needs to be calculated by the speed measuring equipment and the installation position of the transponder. However...

AI Technical Summary

Problems solved by technology

However, there are following defects in this method: a. many transponders will be laid along the track, and the application of a large number of transponders will bring great trouble to the operation and maintenance management of the rail company; b. when the train travels at a high speed, the transponder Unable to respond in time, resulting in untimely train positioning and positioning errors; c. Must rely on speed measuring equipment, once the speed measuring equipment has problems, accurate positioning cannot be completed

[0005] 2. GPS positioning method, GPS positioning is basically accurate, but it is not suitable for use in tunnels. In tunnels, due to the poor coverage of positioning signals, the number of positioning satellites that can be searched by the device is limited, so the positioning error is large and the positioning is not accurate enough

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