Optical fiber Bragg grating pressure sensor and corresponding measurement method thereof

An optical fiber Bragg and pressure sensor technology, which is applied in the measurement of fluid pressure using optical methods, and the measurement of force by measuring the change of optical properties of materials when they are stressed, can solve the problems of temperature cross-sensitivity and difficulty in accurately measuring pressure, etc. Achieve the effect of easy operation, solve temperature cross-sensitivity, and improve measurement accuracy

Active Publication Date: 2010-12-01
NINGBO SHANGONG CENT OF STRUCTURAL MONITORING &CONTROL ENG
View PDF4 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual engineering test of the fiber Bragg grating sensor, because the reflection center wavelength of the fiber Bragg grating will drift with the fluctuation of the ambient temperature, it

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 Bragg grating pressure sensor and corresponding measurement method thereof
  • Optical fiber Bragg grating pressure sensor and corresponding measurement method thereof
  • Optical fiber Bragg grating pressure sensor and corresponding measurement method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.

[0033] The fiber Bragg grating pressure sensor proposed by the present invention, such as figure 1 with figure 2 As shown, it includes a cylindrical shell 1, a circular elastic diaphragm 2, an L-shaped equal-strength beam 3, and a fiber Bragg grating 4. The top of the shell 1 is provided with an opening 11, and the opening 11 and the shell The internal space of 1 is connected to form a cavity 12 with an opening. The elastic diaphragm 2 is connected to the top end of the housing 1. The elastic diaphragm 2 covers the opening 11, and the L-shaped equal-strength beam 3 is arranged in the cavity 12. The fixing plate 31 of the equal-strength beam 3 can be fixedly connected to the cavity wall of the cavity 12 by fasteners such as screws. The free end of the beam arm 32 of the L-shaped equal-strength beam 3 is provided with a compression block 33 and an elastic d...

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 an optical fiber Bragg grating pressure sensor and a corresponding measurement method thereof, and the sensor comprises a housing, an elastic diaphragm, an L-shaped uniform strength beam and an optical fiber Bragg grating, wherein an opening is arranged at the top end of the housing, the opening and internal space of the housing constitute a cavity body, the elastic diaphragm covers the opening, the uniform strength beam is arranged in the cavity body, a pressure block is arranged at the free end of a beam arm of the uniform strength beam, a hard boss which is tightly connected with the pressure block is arranged on the lower surface of the elastic diaphragm, the optical fiber Bragg grating is mainly constituted by connecting two Bragg gratings with the identical temperature gradient in series through an optical fiber, and the two Bragg gratings are respectively connected on the upper surface and the lower surface of the beam arm. The sensor has the advantages that the elastic diaphragm is in rigid connection with the beam arm during the design, thereby not only improving the measurement precision, but also reducing the process difficulty; as the optical fiber Bragg grating is mainly constituted by the two Bragg gratings with the identical temperature gradient, the sensor can solve the temperature cross sensitivity problem during the measurement.

Description

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

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
Owner NINGBO SHANGONG CENT OF STRUCTURAL MONITORING &CONTROL ENG
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.

© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap