Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Safety monitoring system of long-distance pipeline

A safety monitoring, long-distance technology, applied in the field of pipeline systems, to achieve high positioning accuracy, system signal-to-noise ratio assurance, and wide application effects

Inactive Publication Date: 2009-10-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the congenital deficiency in principle, the longest monitoring distance without relay does not exceed 80km

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
  • Safety monitoring system of long-distance pipeline
  • Safety monitoring system of long-distance pipeline
  • Safety monitoring system of long-distance pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] For purposes of summarizing the invention, certain aspects, advantages and novel features of the invention are described herein. It should be understood that not necessarily all such advantages can be achieved in accordance with any one particular embodiment of the invention. Accordingly, the invention is not to be limited to any particular embodiment disclosed.

[0030] Embodiments of the present invention are as follows:

[0031] 1. Implementation plan 1 safety monitoring long-distance communication optical cable, this example is an experimental prototype, its composition is as follows figure 1shown. The thick connecting wires in the figure are optical fibers, provided by Chengdu Zhongzhu Optical Cable Co., Ltd., and the thin connecting wires are electric wires. The computer 5 is a PC104 system, the light source driver 6, and the circuit processing board 10 with a detector are three 1MHz12bit A / D chips, three PIN detectors, a driving circuit, a processing circuit,...

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

No PUM Login to View More

Abstract

The invention discloses a safety monitoring system of a long-distance pipeline, comprising a transmitted and received light signal processing module 1, a light delay component 2, a single-line optical fiber 3 and a nonlinear optical environment 4 with a probing blind area, which are all formed into a variant-type optical fiber Sagnac interferometer. A polarization control element is used for ensuring the maximum interference intensity, and at least three wavelengths and three coherent light pulse signals are used for independently obtaining data to inhibit noise produced by the light source fluctuation and the polarization state change. The preservation time of A / D sampling is greater than the value of a pulse width, and the A / D sampling frequency is greater than the light source repetition frequency. A probe completely transforms each returned coherent light pulse so that an electric signal is undistorted. A single detection system has no relay to detect the distance of over 100 km.

Description

technical field [0001] The invention discloses a long-distance pipeline safety monitoring system constructed by using the optical fiber Sagnac interference principle, relates to distributed measurement of vibration and impact, and belongs to the technical field of pipeline systems. Background technique [0002] Maintaining the security of infrastructure is a basic requirement for social stability and rapid economic development. Safety monitoring of infrastructure such as communication cables, high-voltage power grids, oil pipelines, gas pipelines, bridges, dams, and buildings to determine health, maintenance needs, life expectancy, and other characteristics is not only a guarantee for the technical functions of these facilities, It is an effective means to avoid major economic losses and maintain social stability and development. In recent years, the absolute security of optical fiber information transmission has been broken, and eavesdropping incidents on terrestrial optic...

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): F17D5/02G01H9/00
Inventor 张利勋刘永智彭增寿代志勇欧中华
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com