Magnetic Field Detection with an Advanced FBG-based Sensor Device
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- 作者：Vivien Schukar ; vivien.schukar@bam.de ; Enrico Kö ; ppe ; Detlef Hofmann ; Anja Westphal ; Mario Sahre ; Xin Gong ; Matthias Bartholmai ; Uwe Beck
- 关键词：fiber Bragg grating ; magnetostriction ; strain ; magnetic field
- 刊名：Procedia Engineering
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：168
- 期：Complete
- 页码：1270-1274
- 全文大小：418 K
- 卷排序：168
文摘
A high-performance fiber Bragg grating-based (FBG) sensor device has been developed for the detection of small magnetic fields. Based on a smart multilayer jacket around the fibre over the physical length of the FBG, magnetic fields generated by rotating machine parts, power generators or power cable can be easily detected, analysed and evaluated. Consequently, this innovative, on-line and non-contact inspection method results in an increase in quality and reliability of high-performing machine parts, devices and cables. The basic physical principle is based on a magnetostrictive multilayer system that strains the high-resolution FBG element in presence of magnetic fields. Subsequently, a fixed relationship between induced magnetic field and wavelength change of the FBG element describes the characteristic sensitivity curve. Intensive tests regarding characterisation of this magnetic field FBG sensor have been carried out and its performance has been evaluated.