Title :
A novel optical accelerometer
Author :
Barbosa, F. Rudge ; Borin, F. ; Arakaki, Alexander ; Aguiar, João G D ; Chaves, Claudionor
Author_Institution :
Fundacao CPqD, Campinas, Brazil
Abstract :
Frequently, assessment and monitoring of mechanical (acoustic) vibrations is necessary in large structures. Cost and reliability are major issues for field-deployment. We present a simple, compact and reliable optical accelerometer designed and constructed in our labs, capable of consistent and reliable measurement of vibrations in intermediate acoustic range (few Hz to few kHz), based on variation of optical power coupling between fibers in the optical sensor head. The device sensitivity has a lower limit to accelerations as low as 1 g, but has a surprising upper value above 180 m/s2 (18 g).
Keywords :
accelerometers; acoustic variables measurement; fibre optic sensors; vibration measurement; acoustic vibrations; intermediate acoustic range; mechanical vibrations; optical accelerometer; optical power coupling; optical sensor; vibration measurements; Accelerometers; Acoustic devices; Acoustic measurements; Costs; Monitoring; Optical design; Optical fiber sensors; Optical sensors; Power measurement; Vibration measurement;
Conference_Titel :
Microwave and Optoelectronics, 2005 SBMO/IEEE MTT-S International Conference on
Print_ISBN :
0-7803-9341-4
DOI :
10.1109/IMOC.2005.1580050
