Brillouin distributed optical fiber sensing system

A technology of distributed optical fiber and sensing system, which is applied in the direction of using optical devices to transmit sensing components, general control systems, control/regulation systems, etc., can solve the problems of synchronous coded pulse train, complex structure, high cost, etc., and achieve high measurement Accurate, highly integrated, highly targeted effects

Active Publication Date: 2013-12-18
UNIV OF ELECTRONIC SCI & TECH OF CHINA
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to improve the measurement accuracy and measurement distance of the distributed temperature measurement system, the pulsed light can be encoded to improve the signal-to-noise ratio of the system. This requires a waveform generation card that can generate encoding, and cooperate with the data acquisition card for data acquisition. However, Since the general-purpose waveform generation card needs computer software above the PC to con

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
  • Brillouin distributed optical fiber sensing system
  • Brillouin distributed optical fiber sensing system
  • Brillouin distributed optical fiber sensing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] refer to figure 1 , a Brillouin distributed optical fiber sensing system, including Brillouin scattered light 1, photodetector 2, signal preprocessing circuit 3, high-speed AD acquisition circuit 4, arbitrary encoding pulse circuit 5, acousto-optic driver 6, data Storage circuit 7, microwave frequency sweep control circuit 9, FPGA logic control circuit 10, ARM and host computer interface circuit 11 and host computer 12; the output end of Brillouin scattered light 1 is connected with the input end of photodetector 2, and the photoelectric The output end of the detector 2 is connected with the input end of the signal preprocessing circuit 3, the output end of the signal preprocessing circuit 3 is connected with the input end of the high-speed AD acquisition circuit 4, and the output end of the high-speed AD acquisition circuit 4 is connected with t...

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 Brillouin distributed optical fiber sensing system which comprises Brillouin scattering light (1), a photoelectric detector (2), a signal preprocessing circuit (3), a high speed AD collecting circuit (4), an arbitrary coded pulse circuit (5), an acousto-optic driver (6), a data storage circuit (7), a microwave source (8), a microwave frequency sweeping control circuit (9), an FPGA logic control circuit (10), an ARM and upper computer interface circuit (11) and an upper computer (12). The Brillouin distributed optical fiber sensing system provides coded pulse drive signals needed by a Brillouin optical time domain analysis meter, and carries out collection and processing on the Brillouin scattering optical signals generated by an optical subsystem, temperature and strain information is demodulated from the Brillouin scattering optical signals, and the Brillouin distributed optical fiber sensing system is strong in pertinence, high in integration level and low in cost, and achieves high measuring accuracy and long measuring distance.

Description

technical field [0001] The invention relates to a distributed optical fiber sensing system, in particular to a Brillouin distributed optical fiber sensing system, which is an integrated signal processing platform suitable for a long-distance, high-resolution distributed optical fiber sensing system. Background technique [0002] Worldwide, due to the continuous improvement in the safety and efficiency requirements of industrial facilities, the demand for integrated safety detection systems is gradually rising. Although point-type and quasi-distributed optical fiber sensing technology has high spatial resolution, short measurement time, and strong signal, it has a strong affinity for continuous, uninterrupted, long-distance measurement and the measured medium. It is relatively weak, and it does not have the characteristics of combining transmission and sensing media into one. [0003] In order to improve the measurement accuracy and measurement distance of the distribute...

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): G01D5/353G05B19/042
Inventor 崔安彬王子南闫晓东饶云江
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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