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

Push-pull fiber detector

A fiber optic detector, push-pull technology, applied in seismic signal receivers and other directions, can solve problems such as process difficulty and underwater static pressure resistance, and achieve the effects of consistent process, reduced volume, and reduced lateral sensitivity

Active Publication Date: 2012-02-15
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF8 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In view of this, the main purpose of the present invention is to provide a push-pull optical fiber detector to solve the problems of sensor volume, lateral sensitivity, process difficulty and consistency, hydrostatic pressure resistance, etc.

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
  • Push-pull fiber detector
  • Push-pull fiber detector
  • Push-pull fiber detector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0034] Please refer to Figure 1-Figure 5 , the push-pull optical fiber detector includes: a base 10 for installing a sensing arm 20; two sensing arms 20 mounted on the base 10 in a centrosymmetric manner for sensing vibration signals; a fiber optic coupler 30, which The two ends on the same side are respectively connected to one end of the sensing fiber 23 on the two sensing arms 20 for making the light in the sensing fiber 23 of the two sensing arms 20 interfere. Wherein, the sensing arm 20 further includes: an end frame 22 for installing the support beam 21 and the diaphragm 25 on the base 10; the support beam 21 for winding the sensing optical fiber 23; the diaphragm installed on the end frame 22 25, as an elastic el...

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 push-pull fiber detector which comprises that: a pedestal used for installing a sensing arm; two sensing arms which are installed on the pedestal in a central symmetry mode and are used for sensing a vibration signal; a fiber coupler used for enabling light in sensing fibers of the two sensing arms to interfere, wherein two ends of a same side of the fiber coupler connect with one end of the sensing fibers of the two sensing arms respectively. According to the invention, through winding fibers around a support beam and a mass block, utilizing a diaphragm as an elastic element, a volume of the push-pull fiber detector is effectively reduced; through limiting a vibration mode of the mass block through the diaphragm, transverse sensitivity is effectively reduced; through employing a method of winding fibers around the support beam and the mass block, structures of each sensing arm are same, technology is consistent, composition design is simplified, technology difficulty of the fiber detector is effectively reduced, and consistency of the detector is raised.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensors, in particular to a push-pull optical fiber detector. Background technique [0002] Compared with the corresponding conventional sensors, fiber optic sensors have obvious advantages in terms of sensitivity, dynamic range, and reliability. They are particularly prominent in the fields of national defense and military applications, and are listed as key national defense technologies by many countries. [0003] The optical fiber detector is an instrument that uses the light transmission characteristics of the optical fiber and various modulation effects generated by its interaction with the surrounding environment to detect seismic wave signals on the surface, underground, and in liquids. Compared with traditional piezoelectric sensors, it has the following main advantages: wide frequency band, high sound pressure sensitivity, no electromagnetic interference, light weight, can be design...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/18
Inventor 张文涛李芳
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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