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A gas pressure monitoring system based on optical fiber white light interferometry technology

A technology of white light interference and measurement technology, which is applied in the field of gas pressure monitoring system, can solve the problems such as the difficulty of gas pressure measurement, and achieve the effect of simple structure, good control and reduced influence

Active Publication Date: 2021-07-16
CHONGQING UNIV OF ARTS & SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem in the prior art that it is difficult to measure gas pressure in a strong electromagnetic field environment

Method used

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  • A gas pressure monitoring system based on optical fiber white light interferometry technology
  • A gas pressure monitoring system based on optical fiber white light interferometry technology
  • A gas pressure monitoring system based on optical fiber white light interferometry technology

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Embodiment Construction

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the present invention provides a gas pressure monitoring system based on optical fiber white light interferometry technology, including an optical interferometric demodulator, an optical fiber topological network 8 and an air pressure sensor group;

[0027] The white light interferometer includes a white light source 1, a first optical fiber circulator 2, a second optical fiber circulator 7, a first optical fiber half mirror 3, a mirror 5, a first self-focusing lens 4, a stepping motor 6, a data acquisition Card, photodetector 13 and computer; White light source 1 is the white light source 1 of central wavelength 1310nm, and white light source 1 is arranged on the No. 1 port of the first optical fiber circulator 2, the No. 2 port of the first optical fiber circulator 2 and the first The input end of the optical fiber half mi...

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Abstract

The invention provides a gas pressure monitoring system based on optical fiber white light interferometry technology, which includes a white light interferometric demodulator, an optical fiber topology network and a gas pressure sensor group; the white light interferometric demodulator includes a white light source, a first optical fiber circulator, a second Optical fiber circulator, the first optical fiber half mirror, reflecting mirror, the first self-focusing lens, stepper motor, data acquisition card, photodetector and computer; the optical fiber topological network is made of optical switch or multi-channel splitter and is formed by tree The air pressure sensor group includes a plurality of identical air pressure sensors, and the air pressure sensor includes an elastic film, a reflective coating, a sensor housing, a standard air pressure inert gas, transparent glass, a second fiber optic half mirror, and a second self-focusing lens. The gas pressure monitoring system based on optical fiber white light interferometry technology provided by the present invention uses optical sensors to monitor the internal pressure of pressure vessels, and is more suitable for pressure monitoring of gas pressure vessels under harsh conditions.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, in particular to a gas pressure monitoring system based on optical fiber white light interferometry technology. Background technique [0002] Gas pressure monitoring is one of the important monitoring contents in industrial engineering safety monitoring. It is widely used in absolute height monitoring, internal pressure monitoring of gas pressure vessels, and leakage prevention monitoring of gas storage containers. In the air pressure monitoring problem of pressure vessels in the environment of high temperature, strong acid and alkali, and strong electromagnetic field, due to the natural aging and corrosion speed of the container, the compressive strength of the rust point decreases, or the air tightness decreases, which will cause the performance of the pressure vessel to decline. . Therefore, the internal pressure monitoring of gas pressure vessels and the anti-leakage monitoring...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L11/02
CPCG01L11/025
Inventor 张平磊张滟
Owner CHONGQING UNIV OF ARTS & SCI
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