Measurement of ambient vibration by self-mixing interferometry and its application to intrusion detection

Silvano Donati, Giuseppe Martini, Sheng Kwang Hwang

Research output: Contribution to journalArticlepeer-review

Abstract

We present a self-mixing interferometer (SMI) vibrometer developed around a laser diode with a simple and compact analog processing of the fringe signal, and show that this instrument can readily detect ambient vibrations-which adversely affect mechanical material-working lathes. In addition, we find out that the vibrometer is an excellent intrusion detector, capable of discovering a man stepping several meters away from the sensor, thus hinting at an SMI application as an antithief sensor.

Original languageEnglish
Article number051508
JournalOptical Engineering
Volume57
Issue number5
DOIs
Publication statusPublished - 2018 May 1

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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