Positioning and real time tracing system for temperature insensitive optical fiber optical grating stress sensing train

A fiber grating and train positioning technology, which is applied in transportation and packaging, railway car body parts, vehicle route interaction equipment, etc., to achieve the effects of shortening the time between trains, improving positioning accuracy, and cheap sensitivity

Inactive Publication Date: 2008-10-29
BEIJING JIAOTONG UNIV
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method of overcoming temperature stress cross-sensitive distributed fiber gra

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Positioning and real time tracing system for temperature insensitive optical fiber optical grating stress sensing train
  • Positioning and real time tracing system for temperature insensitive optical fiber optical grating stress sensing train
  • Positioning and real time tracing system for temperature insensitive optical fiber optical grating stress sensing train

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example one

[0040] The present invention proposes a temperature-insensitive fiber grating stress sensing train positioning and real-time tracking system. The connections between its components are as follows, see image 3 :

[0041] Just below a rail C10 of a railway line, there are embedded fiber grating stress sensors A211...A21n. The center wavelengths of these fiber grating stress sensors are different. Each fiber grating stress sensor with a different center wavelength represents one Geographic location, the upper end surface 21 of the fiber grating stress sensor is in contact with the bottom surface of the rail, the two fiber grating stress sensors are separated by 100 meters, and the connection between the two adjacent ones is the right port 73 of the right circulator 70 and the left of the other The left port 11 of the circulator 10 is connected with an optical fiber;

[0042] The broadband light source A10 installed at the train departure station is connected to ...

Example Embodiment

[0051] Example two

[0052] The present invention proposes a temperature-insensitive fiber grating stress sensing train positioning and real-time tracking system. The connections between its components are as follows, see Figure 4 :

[0053] Just below each rail C10 of the two railway lines, fiber grating stress sensors A211...A21n and fiber grating stress sensors A221...A22n are embedded. The center wavelengths of these fiber grating stress sensors are different. Similarly, the fiber grating stress sensor of each wavelength represents a geographic location. The upper end surface 21 of the fiber grating stress sensor is in contact with the bottom surface of the rail. The two fiber grating stress sensors are separated by 500 meters, and the connection between two adjacent ones is a right side. The right port 73 of the circulator 70 is connected to the left port 11 of the other left circulator 10 with an optical fiber;

[0054] The broadband light source A10 installed in the train ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a fibre grating stress sensing train positioning and real-time tracking system which is insensitive to temperature. The system of the invention is characterized in that a plurality of fibre grating stress sensors (A211...A21n)...(A211...A21n) with different central wavelengths are embedded just below one steel rail of each line of the railway with the interval of 100-500 meters. A broadband light source (A10) is connected with a fast optical switch (A20) and a first fibre grating stress sensor (A211...a2m1); a final fibre grating stress sensor (A21n...A2mn) is connected with an optical amplifier (A30), a wavelength-division element (A41), a high-speed optical switch (A42), an O/E converter (A43), a digital signal processing module (A44), a host computer (A45), as well as a server (A47) and a large screen (A46) which memorize three-dimensional electronic maps. The fibre grating stress sensing train positioning and real-time tracking system is suitable for the positioning and real-time tracking of the high-speed railway trains.

Description

technical field [0001] The invention relates to a temperature-insensitive optical fiber grating stress sensing train positioning and real-time tracking system, which is suitable for the fields of optical fiber communication, optical fiber sensing, train safety operation, traffic information engineering and control technology, and is especially suitable for high-speed railway train operation control and Train real-time tracking technology field. Background technique [0002] High-speed railway is not only the requirement of rapid transportation for social development, but also the mainstream of railway development in various countries in the world. How to realize real-time tracking of high-speed trains to ensure driving safety and improve transport capacity is becoming increasingly important. [0003] In order to ensure the safe running of high-speed trains, many different control systems have been studied in the world. [0004] Developments vary from country to country, and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B61L25/00B61L1/02
Inventor 裴丽宁提纲董小伟延凤平祁春慧赵瑞峰阮乂吴树强刘俊杰
Owner BEIJING JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap