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

Fiber body strain gauge

A technology of body strain and strain gauge, applied in instruments, optical devices, measuring devices, etc., can solve problems such as electromagnetic interference, lightning protection, zero drift, etc., and achieve the effect of reducing zero drift problems

Active Publication Date: 2013-06-26
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide an optical fiber body strain gauge to solve the problems of electromagnetic interference, lightning protection and zero drift of existing drilling strain gauges

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
  • Fiber body strain gauge
  • Fiber body strain gauge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] 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.

[0025] Please refer to Figure 1-Figure 2 , the optical fiber body strain gauge provided by the present invention includes: a strain cylinder 20 for sensing body strain; filling the liquid 50 in the strain cylinder 20 for transmitting the body strain felt by the strain cylinder 20; an end cap 10 for sealing; The spring tube 40 installed at the bottom of the strain tube 20 is used to sense the pressure change in the strain tube 20; the bolt 80 installed at the bottom of the strain tube 20 is used for filling the liquid 50 and sealing it; it is fixed at the bottom of the spring tube 40 and the strain tube 20 The fiber grating 60 at the end is used to measure the end displacement of the spring tube 40; the protective cover 7...

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 fiber body strain gauge which comprises that: a strain cylinder used for sensing body strain; liquid which is filled into the strain cylinder and is used for transmitting body strain sensed by the strain cylinder; a end cap used for carrying out sealing; a spring tube which is installed at a bottom of the strain cylinder and is used for sensing pressure change in the strain cylinder; a bolt which is installed at the bottom of the strain cylinder and is used for filling liquid and carrying out sealing; a fiber grating which is fixed at a bottom of the spring tube and the bottom of the strain cylinder and is used for measuring end displacement of the spring tube; a protective cover which is installed at the bottom of the strain cylinder and is used for protecting internal structures of the body strain gauge. By utilizing the invention, problems of electromagnetic interference, lightening proof and null shift of a present boring strain gauge are solved.

Description

technical field [0001] The invention relates to the technical field of seismic detection, in particular to an optical fiber body strain gauge. Background technique [0002] Under the action of regional stress field, the crust will be deformed, and the borehole strain observation is an important means to study the deformation of the crust and the change of the stress field. Borehole strain gauges can continuously record the crustal deformation at and before and after earthquakes and volcanic activities in minutes or even close to seismic sampling time. Therefore, it plays an important role in earthquake prediction and geophysical research. [0003] Existing borehole strain gauges include bulk strain gauges and component strain gauges (Qiu Zehua et al., "Development Status of Borehole Strain Observation Abroad", Acta Seismological Sciences, 2004). But no matter what kind of strain gauge, electrical sensors are used for detection. For example, the FZY-1 borehole strain gauge...

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 Patents(China)
IPC IPC(8): G01B11/16G01V1/52
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