An electronic high-pressure measuring system using a polarimetric fiber-optic sensor

2002 ◽  
Author(s):  
A. Barwicz ◽  
W.J. Bock
Keyword(s):  
High Pressure ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Measuring System ◽  
Optic Sensor

The Application of Fiber Optic Sensor to the Study of Engineering Structure

2006 ◽  
Vol 326-328 ◽  
pp. 1351-1354
Author(s):  
Qi Rong Zhu ◽  
Ru Hua Fang ◽  
Guo Biao Yang ◽  
Wei Ming Zeng
Keyword(s):  
Fiber Optic ◽  
Experimental Testing ◽  
Smart Structure ◽  
Fiber Optic Sensor ◽  
Measuring System ◽  
Vibration Measurement ◽  
Technical Equipment ◽  
Electronic Measuring ◽  
Engineering Structure ◽  
Optic Sensor

The fiber optic sensor measuring system based on the Mech-Zehnder interferometry is developed in the paper. The system can be used for the strain and vibration measurement of engineering structure, and has the advantages: convenient adjusting, stable performance and strong ability of anti-interference, etc. Therefore the fiber optic sensor has been widely used in the engineering field. First the system is introduced into measuring the frequency and amplitude of the vibration subjected to force of the FRP-concrete beam. The fiber optic sensor measuring system and the electronic measuring system are synchronous used for the measurement. The analysis results of fiber optic sensor measurement approximate to the results of electronic strain gauge. Then the system is introduced into experimental stress analysis on the gas pipe, good results is obtained too. The paper provides new technical equipment for the experimental testing of various engineering structure using fiber optic sensor, also establishes the technical foundation of the research of smart structure.

scholarly journals Simple fiber-optic sensor for simultaneous and sensitive measurement of high pressure and high temperature based on the silica capillary tube

2019 ◽  
Vol 27 (18) ◽  
pp. 25777 ◽  
Author(s):  
Haoyang He ◽  
Yi Liu ◽  
Yingying Liao ◽  
Changpeng Lang ◽  
Yan Li ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Fiber Optic ◽  
Capillary Tube ◽  
Fiber Optic Sensor ◽  
Optic Sensor ◽  
Silica Capillary

scholarly journals Design of an information-measuring system for monitoring deformation and displacement of rock massif layers based on fiber-optic sensors

2021 ◽  
Vol 6 (5 (114)) ◽  
Author(s):  
Vyacheslav Yugay ◽  
Ali Mekhtiyev ◽  
Yelena Neshina ◽  
Bakhytkul Aubakirova ◽  
Raushan Aimagambetova ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Fiber Optic Sensors ◽  
Rock Massif ◽  
Fiber Optic Sensor ◽  
Measuring System ◽  
Processing Unit ◽  
Software Complex ◽  
Information Measuring ◽  
Optic Sensor ◽  
Information Measuring System

This paper reports a study into designing an information-measuring system that could be used in coal mines that are dangerous in terms of the explosion of coal dust and methane gas. The results of reviewing technical advancements in the field of fiber-optic system development are given. To solve the set task, prototypes of a fiber-optic sensor of a new type and a hardware-software complex were constructed. The research aims to improve the safety of workers at coal enterprises. The result of the theoretical research has established that additional losses related to a micro bending should be taken into consideration while accounting for the effect of photoelasticity. The fundamental difference between the idea reported here and existing analogs is the development of a hardware-software complex capable of working with a single-mode optical fiber of great length with a significant noise level. The data processing unit is equipped with a television matrix and can analyze changes in the pixels of a light spot. The proposed system is quasi-distributed; it controls individual points within a rock massif. The designed hardware-software system provides high noise immunity of measuring channels when the external temperature changes. The research results helped develop an information-measuring system for monitoring the deformation and displacement of rock massif layers based on fiber-optic sensors, capable of operating in an explosive environment. The system makes it possible to control several layers located in the roof of the workings, while the fiber-optic sensor may contain two or three sensitive elements that are connected to different channels. With a sharp fluctuation in pressure and an increase in the displacement parameter, the system triggers a warning signal about the danger.

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