Self-mixing vibrometer with real-time digital signal elaboration

被引：57

作者：

Magnani, Alessandro ^{[1
]}

Pesatori, Alessandro ^{[1
]}

Norgia, Michele ^{[1
]}

机构：

[1] Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy

来源：

APPLIED OPTICS | 2012年 / 51卷 / 21期

关键词：

LASER-DIODE; BLOOD-FLOW; DISPLACEMENT; INTERFEROMETRY; VELOCIMETER; MODULATION;

D O I：

10.1364/AO.51.005318

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This work describes the development of an optical sensor for measurement of vibration without contact. The realized vibrometer is based on real-time digital elaboration of the signal obtained by a self-mixing interferometer, with an embedded autofocus system. Two different algorithms are implemented, for the continuous working on diffusive surfaces, with different levels of optical reflectivity. Thanks to the autofocus and the digital processing, the proposed sensor is easy to use and requires no assistance of a skilled operator. (C) 2012 Optical Society of America

引用

页码：5318 / 5325

页数：8

共 23 条

[1] Displacement measurements using a self-mixing laser diode under moderate feedback [J].

Bes, Caroline ;

Plantier, Guy ;

Bosch, Thierry .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2006, 55 (04) :1101-1105

[2]

Donati S., 2004, Electro-Optical Instrumentation: Sensing and Measuring with Lasers

[3] Self-mixing differential vibrometer based on electronic channel subtraction [J].

Donati, Silvano ;

Norgia, Michele ;

Giuliani, Guido .

APPLIED OPTICS, 2006, 45 (28) :7264-7268

[4] Improving the measurement performance for a self-mixing interferometry-based displacement sensing system [J].

Fan, Yuanlong ;

Yu, Yanguang ;

Xi, Jiangtao ;

Chicharo, Joe F. .

APPLIED OPTICS, 2011, 50 (26) :5064-5072

[5] Self-mixing laser diode vibrometer [J].

Giuliani, G ;

Bozzi-Pietra, S ;

Donati, S .

MEASUREMENT SCIENCE AND TECHNOLOGY, 2003, 14 (01) :24-32

[6] Laser diode linewidth measurement by means of self-mixing interferometry [J].

Giuliani, G ;

Norgia, M .

IEEE PHOTONICS TECHNOLOGY LETTERS, 2000, 12 (08) :1028-1030

[7]

Giuliani G., 2002, J OPT A-PURE APPL OP, V4, P283

[8] FIBER-COUPLED SELF-MIXING DIODE-LASER DOPPLER-VELOCIMETER - TECHNICAL ASPECTS AND FLOW VELOCITY PROFILE DISTURBANCES IN WATER AND BLOOD FLOWS [J].

KOELINK, MH ;

DEMUL, FFM ;

WEIJERS, AL ;

GREVE, J ;

GRAAFF, R ;

DASSEL, ACM ;

AARNOUDSE, JG .

APPLIED OPTICS, 1994, 33 (24) :5628-5641

[9] Measurement of Local Chest Wall Displacement by a Custom Self-Mixing Laser Interferometer [J].

Milesi, Ilaria ;

Norgia, Michele ;

Pompilio, Pasquale P. ;

Svelto, Cesare ;

Dellaca, Raffaele L. .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2011, 60 (08) :2894-2901

[10] High resolution self-mixing laser rangefinder [J].

Norgia, M. ;

Magnani, A. ;

Pesatori, A. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2012, 83 (04)

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