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
CN101293528AInactive Publication Date: 2008-10-29BEIJING JIAOTONG UNIV
1 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BEIJING JIAOTONG UNIV
Publication Date
2008-10-29
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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