A low frequency MEMS vibration sensor for low power missile health monitoring

Horowitz, Stephen; Allen, Michael S.; Fox, Jon R.; Cortes, Jean P.; Barkett, Laura; Mathias, Adam D.; Hernandez, Corey D.; Martin, Adam; Sanghadasa, Mohan; Marotta, Stephen

doi:10.1109/aero.2013.6496967

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…While conventional accelerometers are designed to operate over a large bandwidth below resonance, resonant accelerometers operate with a narrow bandwidth near resonance [4]. A high quality factor resonant response increases sensitivity over that of a flat-band accelerometer and attenuates undesirable out-of-band signals.…”

Section: Accelerometer Designmentioning

confidence: 99%

Two-Channel Wakeup System Employing Aluminum Nitride Based Mems Resonant Accelerometers for Near-Zero Power Applications

Reger¹,

Yen²,

Barney³

et al. 2018

2018 Solid-State, Actuators, and Microsystems Workshop Technical Digest

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The Defense Advanced Research Project Agency has identified a need for low-standby-power systems which react to physical environmental signals in the form of an electrical wakeup signal. To address this need, we design piezoelectric aluminum nitride based microelectromechanical resonant accelerometers that couple with a near-zero power, complementary metal-oxide-semiconductor application specific integrated circuit. The piezoelectric accelerometer operates near resonance to form a passive mechanical filter of the vibration spectrum that targets a specific frequency signature. Resonant vibration sensitivities as large as 490 V/g (in air) are obtained at frequencies as low as 43 Hz. The integrated circuit operates in the subthreshold regime employing current starvation to minimize power consumption. Two accelerometers are coupled with the circuit to form the wakeup system which requires only 5.25 nW before wakeup and 6.75 nW after wakeup. The system is shown to wake up to a generator signal and reject confusers in the form of other vehicles and background noise.

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Section: Accelerometer Designmentioning

confidence: 99%

Two-Channel Wakeup System Employing Aluminum Nitride Based Mems Resonant Accelerometers for Near-Zero Power Applications

Reger¹,

Yen²,

Barney³

et al. 2018

2018 Solid-State, Actuators, and Microsystems Workshop Technical Digest

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show abstract

“…Even though great strides have been made introducing missile health monitoring, severe challenges exist in formulating predictive/proactive sustainment capabilities that not only target the most significant sustainment drivers for greatest effect, but also create solutions which in themselves are highly efficient and effective [1]. It is generally recognized and accepted that health monitoring, prognostics, and embedded diagnostics can replace/optimize traditional corrective or preventive maintenance to enhance system availability, lower logistics footprint, and reduce operating and support costs.…”

Section: Introductionmentioning

confidence: 99%

Return-on-Investment potential for US Army missile health monitoring

Simmons¹,

Marotta

2014

2014 International Conference on Prognostics and Health Management

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Application of health monitoring technology and the capability to predict failures can potentially improve the efficiency and effectiveness of US Army missile sustainment. Sustainment functions throughout the weapon's lifecycle and across the spectrum of different Army missiles such as field testing, lab testing, inspections, retrograde, maintenance, reliability improvements, and supply functions offer many opportunities to better the sustainment status quo in both cost and performance. New technology solutions must however accrue benefits associated with metrics such as total life cycle cost, as well as other readiness-type metrics such as reporting accuracy, timeliness, uncertainty, and other factors. Application of health monitoring and failure prediction must provide an acceptably high return in benefits as compared to the investments needed upfront for development and deployment. Given those constraints, only the most innovative and well engineered applications of existing, emerging, and new technology will suffice in context even though overall sustainment improvements are highly desired. The information in this paper is intended to notionally describe the US Army's missile logistics and supply such that feasible and effective technology solutions can be targeted at specific processes, and thereby provide maximal quantifiable effect. The paper will also briefly address applied research currently being conducted that targets Return-on-Investment (ROI) risks and thereby better enable technology transition. I.

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A low frequency MEMS vibration sensor for low power missile health monitoring

Cited by 2 publications

References 4 publications

Two-Channel Wakeup System Employing Aluminum Nitride Based Mems Resonant Accelerometers for Near-Zero Power Applications

Two-Channel Wakeup System Employing Aluminum Nitride Based Mems Resonant Accelerometers for Near-Zero Power Applications

Return-on-Investment potential for US Army missile health monitoring

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