High speed and high sensitivity fiber Bragg grating interrogator based on the RF phase-shift technique

Glasser, Ziv; Ofer, Yochai; Abramov, Rita; Gotliv, Daniel; Sternklar, Shmuel

doi:10.1016/j.optcom.2018.07.004

Cited by 9 publications

(1 citation statement)

References 25 publications

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“…We used the Beta version of PerCiv's VC1S4 interrogator, which has the capability of providing real-time data form DC up to >1MHz of four sensors simultaneously. The interrogator is based on the RF phase-shift technique, which is described in detail elsewhere [9]. Due to its off-the-shelf alltelecommunication-based design, it is expected to serve as a robust low-cost wide-band device, opening a variety of applications in the field of health and condition monitoring.…”

Section: Introductionmentioning

confidence: 99%

Multitasking FBG sensors for condition monitoring with a wideband (DC–MHz) interrogation system

Glasser,

Liokumovitch,

Bank

et al. 2023

Appl. Opt.

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We demonstrate diagnosis of several machine-condition failures using wide-frequency-band interrogation of fiber Bragg grating (FBG) sensors. In collaboration with Israel’s national water company Mekorot Ltd., a scaled-down version of a semi-submerged pumping system was constructed. By monitoring broadband signals from DC to ultrasound (>MHz), at different points of the engine and the submersed pump, the system was able to diagnose incipient cavitation, faulty bearings, and submerged dynamic water-level measurements. In addition, a metal embedded FBG sensor was investigated, revealing the potential of using FBGs in applications where bonding is problematic such as bearing housing. These results prove that wideband data acquisition, together with advanced analytics, could open a variety of new applications in the fields of structural health and machine-condition monitoring.

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Section: Introductionmentioning

confidence: 99%