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High Sensitivity Microwave Interferometric Vibration Real-time Monitoring System

A real-time monitoring system, a technology of microwave interference, which is applied to measurement devices, uses wave/particle radiation, and measures ultrasonic/sonic/infrasonic waves, etc., which can solve the problems of complex structure of vibration monitoring system, inability to realize real-time monitoring, low accuracy and sensitivity, etc. , to achieve the effect of simple structure, short time, improved sensitivity and resolution

Active Publication Date: 2022-07-12
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a high-sensitivity microwave interference vibration real-time monitoring system to solve the problems that the current vibration monitoring system has complex structure, low precision and sensitivity, long analysis time, and cannot realize real-time monitoring

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  • High Sensitivity Microwave Interferometric Vibration Real-time Monitoring System
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  • High Sensitivity Microwave Interferometric Vibration Real-time Monitoring System

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Embodiment Construction

[0028] In order for those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above objects, features, and advantages of the embodiments of the present invention more clearly understood, the following describes the technical solutions in the embodiments of the present invention with reference to the accompanying drawings. for further details.

[0029] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense. It is directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms can be understood according to specific situations.

[0030] see figure 1 , is a schematic structural diagram of an embodiment of the high-sensitivity microwave interference vibration real-time monitoring system of the present invention. Th...

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Abstract

The invention provides a high-sensitivity microwave interference vibration real-time monitoring system, comprising a broadband light source, an electro-optical intensity modulator, a coupler, a tunable optical attenuator, a reflector, a fiber Bragg grating, a photodetector and a spectrum analyzer. The input end of the electro-optical intensity modulator is connected, the output end of the electro-optical intensity modulator is connected to the coupling input end of the coupler, the first output end of the coupler is connected to the mirror through the adjustable optical attenuator, and the second The output end is connected to the fiber Bragg grating, and the coupling output end of the coupler is connected to the spectrometer through the photodetector. The invention has the advantages of simple structure, high precision and sensitivity, and short analysis time, and can realize real-time monitoring.

Description

technical field [0001] The invention belongs to the field of vibration monitoring, in particular to a high-sensitivity microwave interference vibration real-time monitoring system. Background technique [0002] Vibration monitoring plays an important role in modern engineering systems, such as health monitoring in the oil industry as well as seismic activity or environmental monitoring. Vibration is generated when these systems operate abnormally, and monitoring system vibration allows for early warning and diagnostics. Therefore, vibration sensing technology plays a very important role in the above systems. Optical fiber vibration sensors have been used in vibration monitoring due to their advantages of small size, light weight and anti-electromagnetic interference. Optical fiber vibration sensors are divided into three categories according to the sensing principle: light intensity-based sensors, interference-based sensors, and grating-based sensors. The current intensit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H9/00
CPCG01H9/00
Inventor 邓明冯丹祺张天衡谷三峰
Owner CHONGQING UNIV