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

Optical fiber grating sonic device

A fiber grating and hydrophone technology, applied to transducers and instruments used underwater, using optical devices to transmit sensing components, etc., can solve the problems of difficult measurement of high pressure and complicated process, and achieve sound pressure sensitivity. , Small size, volume reduction effect

Inactive Publication Date: 2008-07-02
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
View PDF0 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical fiber pressure sensor produced in this way requires prestressed bonding of optical fibers, and adopts point bonding, the process is complicated, the linear diaphragm is thin, it is difficult to measure high pressure, and it is sensitive to temperature changes

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
  • Optical fiber grating sonic device
  • Optical fiber grating sonic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as figure 1 as shown, figure 1 Structural sectional view of the fiber grating hydrophone provided by the present invention. The fiber grating hydrophone includes: a support cylinder 1, the support cylinder 1 is the main body of the fiber grating hydrophone, and the support cylinder 1 is cylindrical. A first end cap 2 and a second end cap 3, the first end cap 2 and the second end cap 3 are respectively installed at both ends of the support cylinder 1 for sealing; the first end cap 2 and the second end cap There are small holes 7 and 8 in the center of 3, which are used to lead out the pigtail of the optical fiber 6; a first elastic body 4 and a second elastic body 5, the first elastic body 4 and the second elastic body 5 are located in the support cylinder 1 The two sides close to the end are used to feel the sound pressure and generate deformation. The material of the first elastic body 4 and the second elastic body 5 is silicon rubber or polyurethane rubber. The...

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

An optical fiber grating hydrophone is provided, which is characterized in that the hydrophone comprises a cylindrical supporting drum as the main body of the optical fiber grating hydrophone, a first end cover and a second end cover, which are respectively arranged at the two ends of the supporting drum and each provided with a small hole at the center, a first elastic member 4 and a second elastic member respectively positioned at the two sides inside the supporting drum, close to the ends, and an optical grating positioned in the middle of the supporting drum. The tail end of the optical grating penetrates the first elastic member and the second elastic member and is lead out of the small holes on the first end cover and the second end cover.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensors, in particular to an optical fiber grating hydrophone. Background technique [0002] Compared with the corresponding conventional sensors, optical fiber sensors also 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] Optical fiber hydrophone is an instrument that detects signals such as pressure and sound in liquids by using the light transmission characteristics of optical fiber and various modulation effects generated by its interaction with the surrounding environment. 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 designed into any sha...

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): G01D5/353G01L11/02G01H9/00H04R1/44
Inventor 张文涛刘丽辉李芳刘育梁
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