Second generation of a rotational electrochemical seismometer using magnetohydrodynamic technology

Leugoud, Robert; Харламов, А. В.

doi:10.1007/s10950-012-9290-y

Cited by 22 publications

(15 citation statements)

References 1 publication

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“…Currently the MET angular sensor is probably the only technology which commercially delivers highly sensitive rotational seismometers with a very low self-noise. Table 2 shows the key performances of current commercially available rotational seismometers (METR-03 and R2) [27,28]. …”

Section: Different Types Of Met Motion Sensormentioning

confidence: 99%

Molecular Electric Transducers as Motion Sensors: A Review

Huang

Agafonov

2013

Sensors

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This article reviews the development of a new category of motion sensors including linear and angular accelerometers and seismometers based on molecular electronic transducer (MET) technology. This technology utilizes a liquid not only as an inertial mass, but also as one of the main elements in the conversion of mechanical motion into electric current. The amplification process is similar to that in a vacuum triode. Therefore, it is possible to achieve signal amplification close to 108. Motion sensors demonstrating wide frequency and dynamic range and sensitivity that are one to two orders of magnitude better than MEMS devices of the same size have been developed.

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Section: Different Types Of Met Motion Sensormentioning

confidence: 99%

Molecular Electric Transducers as Motion Sensors: A Review

Huang

Agafonov

2013

Sensors

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“…where ω h =R h S/2πRρ is the hydrodynamic frequency, above which transfer function of the mechanical system reduces proportionally to ω -1 [21]. In realistic parameters the hydrodynamic resistance defining the value of ω h for this system is so high that H mech (ω) transfer function decline begins at the frequency range of tens and even hundreds of Hz.…”

Section: Electrochemical Angular Motion Sensorsmentioning

confidence: 98%

Low noise Linear and Angular Motion Sensors for Vibration Monitoring

Shabalina¹,

Neeshpapa²,

Zaitsev³

et al. 2015

Third International Conference on Advances in Civil, Structural and Construction Engineering - CSCE 2015

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This article reviews on the development of a new category motion sensors for vibration monitoring including linear and angular accelerometers based on molecular electronic transducer (MET) technology. This technology utilizes liquid not only as an inertial mass but also as one of the main elements in the conversion of mechanical motion into electric current. It is possible to achieve signal amplification close to 10 8. Motion sensors demonstrate wide frequency and dynamic range and sensitivity that are one to two orders of magnitude better than MEMS devices of the same size. They can provide an alternative paradigm in development of motion sensors in wide variety of applications including monitoring systems of complex engineering structures, seismic analysis of bridges and buildings, remote sensing devices, structural behavior and structure wind excitation measurement.

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“…In terms of the noise parameters of angular MET sensors, there is a number of publications with experimental data for several types of sensors and for various frequency ranges [ 17 , 18 , 19 ]. In particular, in [ 19 ], the distinction of noises for different types of sensors was connected with the distinction of their hydrodynamic resistance. This mechanism is apparently not the only one, which was especially proven in [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

“…In particular, in [ 19 ], the distinction of noises for different types of sensors was connected with the distinction of their hydrodynamic resistance. This mechanism is apparently not the only one, which was especially proven in [ 19 ]. Unlike the mentioned works, in this study we made experimental measurements and generalized the model for a wider frequency range—from 0.01 to 200 Hz—which is, in fact, the complete frequency range of the modern applications of molecular electronic angular motion sensors.…”

Section: Introductionmentioning

confidence: 99%

Molecular Electronic Angular Motion Transducer Broad Band Self-Noise

Zaitsev

Agafonov

Egorov

et al. 2015

Sensors

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Modern molecular electronic transfer (MET) angular motion sensors combine high technical characteristics with low cost. Self-noise is one of the key characteristics which determine applications for MET sensors. However, until the present there has not been a model describing the sensor noise in the complete operating frequency range. The present work reports the results of an experimental study of the self-noise level of such sensors in the frequency range of 0.01–200 Hz. Based on the experimental data, a theoretical model is developed. According to the model, self-noise is conditioned by thermal hydrodynamic fluctuations of the operating fluid flow in the frequency range of 0.01–2 Hz. At the frequency range of 2–100 Hz, the noise power spectral density has a specific inversely proportional dependence of the power spectral density on the frequency that could be attributed to convective processes. In the high frequency range of 100–200 Hz, the noise is conditioned by the voltage noise of the electronics module input stage operational amplifiers and is heavily reliant to the sensor electrical impedance. The presented results allow a deeper understanding of the molecular electronic sensor noise nature to suggest the ways to reduce it.

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Second generation of a rotational electrochemical seismometer using magnetohydrodynamic technology

Cited by 22 publications

References 1 publication

Molecular Electric Transducers as Motion Sensors: A Review

Molecular Electric Transducers as Motion Sensors: A Review

Low noise Linear and Angular Motion Sensors for Vibration Monitoring

Molecular Electronic Angular Motion Transducer Broad Band Self-Noise

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