A micro seismometer based on molecular electronic transducer technology for planetary exploration

Huang, Hai; Carande, Bryce; Tang, Rui; Oiler, Jonathan; Zaitsev, Dmitry; Agafonov, Vadim M.; Yu, Hongyu

doi:10.1063/1.4806983

Cited by 39 publications

(19 citation statements)

References 13 publications

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“…For the commercial sensors the sensitive cell consists of four mesh electrodes sandwiched together with three porous dielectric ceramic spacers [5]. Alternative configurations for sensitive cells have been reported recently [6][7][8][9]. External electrodes (anodes) are connected to positive potential relative to the internal ones (cathodes).…”

Section: Methodsmentioning

confidence: 99%

Self-Noise of the MET Angular Motion Seismic Sensors

2015

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Interest to angular motion seismic sensors is generated by an expectation that direct measurement of the rotations, associated with seismic signals, would allow obtaining more detailed and accurate information from them. Due to the seismic signals low intensity a self-noise of the sensors is one of the most crucial parameters, characterizing their performance. In seismic applications the molecular-electronic transfer (MET) technology is considered as one of the most promising technologies for the rotations measurements. In this research we have developed a noise model for the MET angular sensors. The experimental part of the research which fully agrees with theoretical data includes the instrument self-noise measurement in quite locations. Based on the modelling we have revealed the directions of further research to improve the MET angular sensors performance.

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Section: Methodsmentioning

confidence: 99%

Self-Noise of the MET Angular Motion Seismic Sensors

2015

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“…The interaction of the chemical reaction and fluid motion in the form of the proportional ion concentration gradient ∇C generated by acceleration a causes the current between the anodes and cathodes to change. The differential current from the two cathodes, which is the output of the sensing element, also forms the input to the signal conditioning circuit for the next process [6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

AC Equivalent Circuit Model of an Electrochemical Accelerometer for 3D Numerical Simulation in the Low-Frequency Range

Zhou

Chen

et al. 2019

Energies

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The electrochemical principles presented in this paper can be applied to the manufacture of vibration sensors for oil and gas exploration, as well as long-period vibration sensors for the observation of natural earthquakes. To facilitate the manufacture of high-volume electrochemical accelerometer (EAM), this paper presents an AC equivalent circuit model of an EAM in a low-frequency range. A 3D time-dependent numerical simulation based on finite element analysis was designed to combine a complex chemical reaction with electric circuit theory. A sensitive chip channel model was constructed by using partial differential equations and the problem caused by a designed mathematical model was solved by using multi-physics finite element analysis. When the electrochemical properties of an electrochemical vibration sensor and its design parameters as well as the parameters of the AC equivalent circuit model are considered, the abstract processing of the sensor on the equivalent circuit is better accomplished. The effectiveness of the proposed simulation model and the equivalent circuit model were verified by comparing the amplitude-frequency characteristic curve of the equivalent circuit with the amplitude-frequency characteristic curve of the single-channel simulation model of the sensitive chip. These model not only have great significance for the design guidance of an external conditioning circuit but also provide an effective method to decouple the output signal and noise of the sensor reaction cavity.

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“…Nevertheless, the solution of the task of high-precision finding of the azimuth direction with the help of this method is achievable with the use of a more sensitive and accurate angular sensor. Molecularelectronic technology-based angular sensor [7][8][9][10] can be used in this case. The described solution is implemented in the patent [11].…”

Section: Introductionmentioning

confidence: 99%

Study of Systems Error Compensation Methods Based on Molecular-Electronic Transducers of Motion Parameters

2018

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The main objective of the paper is to study the system errors of azimuth determination in the dynamic scheme of north finding on the base of the molecular-electronic sensitive angular motion sensor. Introduced theoretical and experimental study of some error compensation methods. Investigated the most significant system inaccuracies of azimuth determination depended on MET sensor g-sensitivity factor and the occurrence of rotation uneven in the system and as a result of tiny angular accelerations which appeared. Methods and algorithms of error reduce are experimentally verified.

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A micro seismometer based on molecular electronic transducer technology for planetary exploration

Cited by 39 publications

References 13 publications

Self-Noise of the MET Angular Motion Seismic Sensors

Self-Noise of the MET Angular Motion Seismic Sensors

AC Equivalent Circuit Model of an Electrochemical Accelerometer for 3D Numerical Simulation in the Low-Frequency Range

Study of Systems Error Compensation Methods Based on Molecular-Electronic Transducers of Motion Parameters

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