Robust Real-time Self-Mixing Interferometric Laser Vibration Sensor with Embedded MEMS AccelerometerReport as inadecuate




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1 LAAS-OSE - Équipe Optoélectronique pour les Systèmes Embarqués LAAS - Laboratoire d-analyse et d-architecture des systèmes Toulouse

Abstract : In this paper, we present a real-time implementation of a Self-Mixing SM interferometric laser diode LD based vibration sensor coupled with an embedded MEMS microelectromechanical system accelerometer. Such a sensor allows measuring correct target movements even when the LD based SM sensor is subject to extraneous movements. This results in a vibration sensing system that can be used for embedded applications as there is no more need of keeping the sensor stationary. Such an approach opens the way for the use of such laser sensors in conditions where the use of anti-vibration support is not available or possible. The proposed data fusion between a MEMS accelerometer and a LD based SM sensor results in a robust, compact and low-cost sensing system.

Keywords : laser diode embedded sensing vibration measurement displacement measurement self-mixing interferometry accelerometer laser diode.





Author: Usman Zabit - Olivier Bernal - Thierry Bosch -

Source: https://hal.archives-ouvertes.fr/



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