A miniaturized VCSEL based sensor platform for velocity measurement

Lee, A. van der; Carpaij, Mark; Mönch, Holger; Schemmann, M.F.C.; Pruijmboom, A.

doi:10.1109/imtc.2008.4547019

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…Self-mixing (SM) or optical feedback interferometry technique has been investigated during the last two decades [1][2][3] for distance [4], velocity [5], vibration [6] and displacement [7] sensing applications as it results in a simple, compact, self-aligned, and low-cost sensor that becomes attractive not only for industrial use but also for large-scale consumer applications [5].…”

Section: Introductionmentioning

confidence: 99%

Robust real-time self-mixing interferometric laser vibration sensor with embedded MEMS accelerometer

Zabit¹,

Bernal²,

Bosch³

2012

AIP Conference Proceedings

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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.

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Section: Introductionmentioning

confidence: 99%

Robust real-time self-mixing interferometric laser vibration sensor with embedded MEMS accelerometer

Zabit¹,

Bernal²,

Bosch³

2012

AIP Conference Proceedings

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“…The simplicity of SM sensors makes these very attractive not only for industrial use but also for large-scale consumer applications [4]. This physical phenomenon occurs when a laser beam is back-scattered by a remote target inside the active cavity of the laser.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Transition Detection Algorithm for a Self-Mixing Displacement Sensor

2009

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A new algorithm for self-mixing (SM) sensors has been developed to perform displacement measurements. It is able to differentiate between the different SM regimes (very weak, weak, moderate, and strong) and thus converges automatically to the optimum threshold level required to detect all the SM fringes, independently of the shape of the signal. Displacement reconstructions based on this algorithm have been validated with counter measuring commercial sensors for both weak and moderate regime acquisitions which are most frequently encountered under experimental conditions. Index Terms-Displacement measurement, optical feedback, optical interferometry.

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A miniaturized VCSEL based sensor platform for velocity measurement

Cited by 2 publications

References 2 publications

Robust real-time self-mixing interferometric laser vibration sensor with embedded MEMS accelerometer

Robust real-time self-mixing interferometric laser vibration sensor with embedded MEMS accelerometer

Adaptive Transition Detection Algorithm for a Self-Mixing Displacement Sensor

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