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Titolo:
Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators
Autore:
Zook, JD; Herb, WR; Bassett, CJ; Stark, T; Schoess, JN; Wilson, ML;
Indirizzi:
Honeywell Technol Ctr, Plymouth, MN 55441 USA Honeywell Technol Ctr Plymouth MN USA 55441 l Ctr, Plymouth, MN 55441 USA Honeywell Technol Ctr, Minneapolis, MN 55413 USA Honeywell Technol Ctr Minneapolis MN USA 55413 Minneapolis, MN 55413 USA
Titolo Testata:
SENSORS AND ACTUATORS A-PHYSICAL
fascicolo: 1-3, volume: 83, anno: 2000,
pagine: 270 - 276
SICI:
0924-4247(20000522)83:1-3<270:FVSBOF>2.0.ZU;2-A
Fonte:
ISI
Lingua:
ENG
Keywords:
self-resonant; vibration sensor; fiber-optic sensor; frequency modulation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Zook, JD Honeywell Technol Ctr, 12001 Highway 55, Plymouth, MN 55441 USA Honeywell Technol Ctr 12001 Highway 55 Plymouth MN USA 55441 USA
Citazione:
J.D. Zook et al., "Fiber-optic vibration sensor based on frequency modulation of light-excited oscillators", SENS ACTU-A, 83(1-3), 2000, pp. 270-276

Abstract

Resonant microbeams have been demonstrated to be sensitive strain transducers that can be used in pressure, acceleration, and temperature sensors. Ashigh-Q strain-sensitive resonators, they can provide a frequency output representing the variable being sensed. This paper describes vibration sensors, a new application for optically self-resonant microbeam oscillators thatare driven and sensed by a single multimode optical fiber. When fabricatedinto acceleration-sensitive microstructures, the oscillator frequency is modulated by the vibration of the microstructure. Treated as FM sources, they function as combined temperature and vibration sensors, with the average carrier frequency las measured by a counter, for example) dependent on temperature and the FM demodulated signal providing the vibration spectrum. With properly designed acceleration-sensitive microstructures, low-noise laser sources and detection electronics, and proper packaging, such devices can provide high performance as both temperature sensors and vibration sensors. As such, they may prove useful as structural health monitors or as monitors for condition-based maintenance of rotating machinery. (C) 2000 Elsevier Science S.A. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 02:43:35