Method and system for realizing train positioning and real-time tracking by using leakage coaxial cable

A technology for leaking coaxial cables and train positioning, applied in optics, light guides, optical components, etc., can solve the functions that cannot transmit accurate positioning and real-time tracking of high-speed trains, and the on-board receiving system is susceptible to external electromagnetic waves. Interference, driving instructions bugs etc.

Inactive Publication Date: 2007-07-11
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, only Japan in the high-speed train section in the world uses leaky coaxial to realize vehicle-ground communication. Without optical fiber bundle tubes, a stable broadband vehicle-to-ground communication system with photoelectric conversion cannot be formed. The bandwidth of the entire system is less than 1MHz, and the functions of accurate positioning and real-time tracking of high-speed trains cannot be transmitted, and the vehicle-mounted transmitting and receiving antennas are all open. type antenna, the vehicle-mounted transmitting system will generate electromagnetic field interference to the outside world, and the vehicle-mounted receiving system is also susceptible to interference from external electromagnetic waves
The vehicle-ground communication system is related to the safety of driving. If it is subject to external interference, it will increase error codes and even cause errors in driving instructions.
Especially in extraordinary times, it is easy for the enemy to use many radio stations in remote areas to attack the vehicle-ground communication system of the traffic command, resulting in the paralysis of the vehicle-ground traffic system

Method used

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  • Method and system for realizing train positioning and real-time tracking by using leakage coaxial cable
  • Method and system for realizing train positioning and real-time tracking by using leakage coaxial cable
  • Method and system for realizing train positioning and real-time tracking by using leakage coaxial cable

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Embodiment 1

[0036] 1. Invented double steel wire reinforced inner conductor "E" shaped slotted outer conductor leakage coaxial optical cable, as shown in Figures 1, 2 and 3. The empty plastic pipe is extruded from polyethylene or other plastics, and two reinforcing steel wires (201) are contained on both sides of the empty plastic pipe. The two reinforced steel wires are on the same plane as the center of the empty plastic tube, and the plastic empty tube containing the two reinforced steel wires is the mechanical strength support body (202) of the inner conductor. In the extrusion molding process, in the plastic empty tube (202) containing two reinforced steel wires, the fiber bundle tube (203) with oil filling is placed longitudinally (the number of optical fibers in the oil-filled bundle tube is determined by the system requirements), the filling The oil fiber bundle tube (203) is an optical transmission medium for vehicle-to-ground communication, and can constitute a high-quality vehi...

Embodiment 2

[0045] A leaky coaxial optical cable to realize train positioning and real-time tracking system, including double steel wire reinforced inner conductor "E" shape slotted outer conductor leaky coaxial optical cable, vehicle antenna made of leaky coaxial cable, photoelectric conversion sending and receiving module structure , The terminal structure of the train positioning and command system, the structure of the on-board digital information processing system and broadband high-frequency amplifier, filter, high-speed data processing terminal, and the three-dimensional electronic map formulated according to the radius of curvature of the track and the condition of the roadbed.

[0046] Double steel wire reinforced inner conductor "E" shaped slotted outer conductor leaky coaxial optical cable, the structure is to use double steel wire reinforced inner conductor "E" shaped slotted outer conductor leaky coaxial optical cable, made of polyethylene or other plastic extrusion molding pla...

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Abstract

The invention relates to a method for positioning and real-time tracking train via leakage coaxial optical cable system, wherein it is formed by five inventions, as dual-wire strengthen inner conductor E-shaped groove outer conductor leakage coaxial optical cable, leakage coaxial cable carrier antenna, optical-electric convert emission receiver, train positioning instructing system, and carrier digit information processor. When train receives accurate position signal, the electric map marks the position of train, to calculate out the speed and accelerator of train; the center receives the real-time information of each train, to real-time display accurate position, speed and accelerator at the electric map; computer via said information calculates out best train line, and sends relative command to the train; train receives command to operate.

Description

technical field [0001] The invention is a method and system for realizing train positioning and real-time tracking by using a leaky coaxial optical cable, which belongs to the technical field of rail transit vehicle-ground communication and train real-time tracking, and is particularly suitable for high-speed railway vehicle-ground communication and train real-time tracking technical fields. Background technique [0002] At present, only Japan in the high-speed train section in the world uses leaky coaxial to realize vehicle-ground communication. Without optical fiber bundle tubes, a stable broadband vehicle-to-ground communication system with photoelectric conversion cannot be formed. The bandwidth of the entire system is less than 1MHz, and the functions of accurate positioning and real-time tracking of high-speed trains cannot be transmitted, and the vehicle-mounted transmitting and receiving antennas are all open. Type antenna, the vehicle-mounted transmitting system wil...

Claims

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Application Information

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IPC IPC(8): B61L1/18B61L25/02G02B6/00G01V8/16
Inventor 简水生延凤平童治简伟范林勇
Owner BEIJING JIAOTONG UNIV
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