17 April 2018 Measurement of ambient vibration by self-mixing interferometry and its application to intrusion detection
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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.
© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
Silvano Donati, Silvano Donati, Giuseppe Martini, Giuseppe Martini, Sheng-Kwang Hwang, Sheng-Kwang Hwang, } "Measurement of ambient vibration by self-mixing interferometry and its application to intrusion detection," Optical Engineering 57(5), 051508 (17 April 2018). https://doi.org/10.1117/1.OE.57.5.051508 . Submission: Received: 29 October 2017; Accepted: 22 March 2018
Received: 29 October 2017; Accepted: 22 March 2018; Published: 17 April 2018
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