Geotechnical pressure cell using a long-term reliable high-precision fiber optic sensor head

2005 ◽  
Author(s):  
R. Gloetzl ◽  
D. Hofmann ◽  
F. Basedau ◽  
W. Habel
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Sensor Head ◽  
Pressure Cell ◽  
Optic Sensor

Measurement and Theoretical Analysis of Elastic Locus of High-Speed Mechanism

1992 ◽  
Author(s):  
Hui-jun Zou ◽  
L. Wang ◽  
R. Kovacevic
Keyword(s):  
Theoretical Analysis ◽  
High Precision ◽  
Dynamic Characteristics ◽  
High Speed ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Challenging Problem ◽  
Optic Sensor ◽  
On Line ◽  
Machine Speed

Abstract With increase of machine speed, the influence of elastic components on dynamic characterises has become a very challenging problem. In our paper, we use self-made fiber-optic sensor on-line to detect the elastic locus. The sensor has highly transmitting and collecting light properties so that steady elastic locus has high precision and distinguishabilty. A theoretical analysis has been conducted using our program KEDL. The conclusions reveal more information about the dynamic characteristics of high-speed mechanisms.

A super continuum characterized high-precision SPR fiber optic sensor for refractometry

2015 ◽  
Vol 229 ◽  
pp. 8-14 ◽  
Author(s):  
Hamid Esmaeilzadeh ◽  
Ezatollah Arzi ◽  
François Légaré ◽  
Maxime Rivard ◽  
Alireza Hassani
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Optic Sensor

New Frontiers for Mid-Infrared Sensors: Towards Deep Sea Monitoring with a Submarine FT-IR Sensor System

2003 ◽  
Vol 57 (6) ◽  
pp. 591-599 ◽  
Author(s):  
Martin Kraft ◽  
Michael Jakusch ◽  
Manfred Karlowatz ◽  
Abraham Katzir ◽  
Boris Mizaikoff
Keyword(s):  
Fiber Optic ◽  
Field Tests ◽  
Pollution Monitoring ◽  
Fiber Optic Sensor ◽  
Sensor System ◽  
Modular System ◽  
Remotely Operated Vehicle ◽  
Sensor Head ◽  
Optic Sensor ◽  
Ft Ir

A sub-sea deployable fiber-optic sensor system for the continuous determination of a range of environmentally relevant volatile organic compounds in seawater has been developed. The prototype of a robust, miniaturized Fourier transform infrared (FT-IR) spectrometer for in situ underwater pollution monitoring was designed, developed, and built in our research group. The assembled instrument is enclosed in a sealed aluminium pressure vessel and is capable of maintenance-free operation in an oceanic environment down to depths of at least 300 m. The whole system can be incorporated either in a tow frame or a remotely operated vehicle (ROV). A suitable fiber-optic sensor head was developed, optimized in terms of sensitivity and hydrodynamics, and connected to the underwater FT-IR spectrometer. Due to a modular system design, various other sensor head configurations could be realized and tested, ensuring facile adaptation of the instrument to future tasks. The sensor system was characterized in a series of laboratory and simulated field tests. The sensor proved to be capable of quantitatively detecting a range of chlorinated hydrocarbons and monocyclic aromatic hydrocarbons in seawater down to the low ppb (μg/L) concentration range, including mixtures of up to 6 components. It has been demonstrated that varying amounts of salinity, turbidity, or humic acids, as well as interfering seawater pollutants, such as aliphatic hydrocarbons or phenols, do not significantly influence the sensor characteristics. In addition, the sensor exhibits sufficient long-time stability and a low susceptibility to sensor fouling.

scholarly journals Distributed Temperature/Vibration Fiber Optic Sensor With High Precision and Wide Bandwidth

2019 ◽  
Vol 11 (6) ◽  
pp. 1-11 ◽  
Author(s):  
Tao He ◽  
Yanli Ran ◽  
Tao Liu ◽  
Hao Li ◽  
Cunzheng Fan ◽  
...  
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Fiber Optic Sensor ◽  
Wide Bandwidth ◽  
Optic Sensor

Wavelength-modulated fiber optic sensor for high precision displacement measurement

2002 ◽  
Vol 73 (10) ◽  
pp. 3687-3691 ◽  
Author(s):  
G. Berkovic ◽  
S. Rotter ◽  
E. Shafir ◽  
W. Scandale ◽  
E. Todesco
Keyword(s):  
High Precision ◽  
Fiber Optic ◽  
Displacement Measurement ◽  
Fiber Optic Sensor ◽  
Optic Sensor
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