An efficient algorithm for processing data from a multi-point sensor of vibrations

Abstract A new technique of vibration sensing, based on a polarimetric fibre-optic strain sensor, is presented; it is designed for localisation of multiple sources of disturbances in a broad frequency spectrum without using fibre gratings. A mathematical model of the sensor is used for development of a variational method for estimation of amplitudes of component vibrations on the basis of noisy samples of the signal at the output of the sensor. This method is implemented in a new algorithm of estimation, being 100–1000 more efficient (in terms of computing time) than an algorithm published previously.

[1]  W. Bock,et al.  Influence of high hydrostatic pressure on beat length in highly birefringent single-mode bow tie fibers. , 1990, Applied optics.

[2]  Kyriacos Kalli,et al.  Fiber Bragg Gratings: Fundamentals and Applications in Telecommunications and Sensing , 2000 .

[3]  Tomasz R. Wolinski,et al.  Fiber optic sensing of an inner combustion engine , 2003, Optical Fibers and Their Applications.

[4]  J. A. Guemes,et al.  Response of Bragg grating fiber-optic sensors when embedded in composite laminates , 2002 .

[5]  J. Alfredo Guemes,et al.  Measurement of strain distribution in bonded joints by fiber Bragg gratings , 1998, Smart Structures.

[6]  Slawomir Ertman,et al.  Comparison of Bragg and Polarimetric Optical Fiber Sensors for Stress Monitoring in Composite Materials , 2009 .

[7]  W J Bock,et al.  Cross-sensitivity effect in temperature-compensated sensors based on highly birefringent fibers. , 1994, Applied optics.

[8]  B. Kim,et al.  Strain effects on highly elliptical core two-mode fibers. , 1987, Optics letters.

[9]  Tomasz R. Wolinski,et al.  Polarimetric fiber optic sensors: state of the art and future , 1994, Other Conferences.

[10]  T. Yoshino,et al.  Distributed Fiber-Optic Sensor Using Forward Travelling Light In Polarization Maintaining Fiber , 1987, Other Conferences.

[11]  H. Thienpont,et al.  Polarimetric optical fiber sensors: aspects of sensitivity and practical implementation , 1997 .

[12]  Wojtek J. Bock,et al.  High hydrostatic pressure effects in highly birefringent optical fibers , 1989 .

[13]  P. Makowski,et al.  Modelling and processing of data from a fibre-optic sensor of vibrations , 2010 .