Digital monitoring and health diagnosis for mechanical equipment operation safety based on fiber Bragg grating sensor

doi:10.1007/s11465-009-0011-3

Front Mech Eng Chin

2009, Vol. 4

Issue (1) : 5-14 https://doi.org/10.1007/s11465-009-0011-3

RESEARCH ARTICLE

Digital monitoring and health diagnosis for mechanical equipment operation safety based on fiber Bragg grating sensor

Zude ZHOU(

), Desheng JIANG, Quan LIU

President’s office of Wuhan University of Technology, Wuhan 430070, China

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Abstract

This paper introduces fiber Bragg grating (FBG) based on a fiber optic grating sensor developed to be embedded on mechanical equipment for digital monitoring and health diagnosis. The theoretical and experimental researches on the new-style FBG sensor (FBGS) technology, high-speed demodulation, and data transmission are discussed. The transmission characteristics between the FBG and the detection interface, modeling and compensation method for online distributed multi-parameter digital monitoring and methods for data processing, synchronous sampling, and long-term dynamic digital monitoring using embedded technology are also presented. The acquired information by an FBGS can be used for the optimization of maintenance schedules and refinement of mechanical equipment design. It is a challenge to gather real-time data from components working at high speed and in a severe environment of high temperature, high pressure, and high rotation speed. Currently, there are no sensors or technologies available for digital monitoring and health diagnosis under this rigorous situation for use in mechanical engineering operation safety. As a result, this paper introduces an online distributed and integrated digital monitoring system and health diagnosis. The new principle and new method will contribute to modern measurements in science and technology, mechanical engineering, and large mechanical equipment operation safety.

Keywords fiber Bragg grating sensor (FBGS) mechanical equipment operation safety embedded technology high-speed demodulation digital monitoring health diagnosis

Corresponding Author(s): ZHOU Zude,Email:zudezhou@whut.edu.cn

Issue Date: 05 March 2009

Cite this article:

Zude ZHOU,Desheng JIANG,Quan LIU. Digital monitoring and health diagnosis for mechanical equipment operation safety based on fiber Bragg grating sensor[J]. Front Mech Eng Chin, 2009, 4(1): 5-14.

URL:

https://academic.hep.com.cn/fme/EN/10.1007/s11465-009-0011-3
https://academic.hep.com.cn/fme/EN/Y2009/V4/I1/5

Fig.1 Relationship curve of refractive index and exposure time under non hydrogen-loading

Fig.2 Relationship curve of refractive index and exposure time under hydrogen-loading

Fig.3 Temperature property of adulteration fiber FBG sensor

Fig.4 Embedding FBG strain sensor structure

Fig.5 FBG and capillary stainless steel tube combined to form FBGS

Fig.6 Structure of plaster FBGS

Fig.7 Structure of multi-channel, multi-point FBG embedded high-speed demodulation system

Fig.8 Communication interface standard between each subsystem

Fig.9 Structure model of 65 t quay container crane

Fig.10 Sensors collocation diagram

Fig.11 Seaside left door leg strain vary diagram

Fig.12 Behind crossbeam down edge strain vary diagram

Fig.13 Embedded FBGS force transducer

Fig.14 Magnetic flux lines of magnetic bearing and transducer

Fig.15 Health diagnosis system for large mechanical equipment

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