Modeling the Convective Noise in an Electrochemical Motion Transducer

Agafonov, Vadim M.

doi:10.20964/2018.12.01

Cited by 6 publications

(2 citation statements)

References 49 publications

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“…This active component is responsible for transporting charge across the liquid-metal interface at the electrode surface. It has been established [23] that in this case, to calculate the current that flows in the system, it is sufficient to take into account only the flows of the active component, considering both diffusion and convective transfer. The background electrolyte acts as a shield for the electric field in the liquid and thus suppresses charges migration.…”

Section: Methodsmentioning

confidence: 99%

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Study of the Phase Relationship between Noise Cathode Currents in Electrochemical Motion Sensors to Determine the Mechanism of Self-Noise

Zhubanyshkaliyev,

Shabalina,

Agafonov

2023

Preprint

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The limits for recording weak signals for electrochemical seismic sensors are determined by their self-noise. At the same time, the noise nature is complex and not fully understood. In this work, for the first time, in addition to the frequency dependences of the noise amplitude, the difference in the phases of the noise currents of the cathodes of an electrochemical sensor has been studied. It has been established that at low frequencies the cathode currents change in an-tiphase. As the frequency increases, the phase difference becomes random. At the same time, the frequency at which the phase difference changes depend on the interelectrode distance; the clos-er the electrodes are located to each other, the greater it is. Physically, this effect is explained by the transition from noise caused by the integral flow of the working fluid to noise associated with vortex flows, the size of which depends on frequency. Thus, a new way of studying noise makes it possible to identify its physical nature and develop new methods of reduction.

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Section: Methodsmentioning

confidence: 99%

“…The measurement limit of weak signals is defined by the self-noise of the sensors. That is why a significant number of publications are devoted to the study of the self-noise of MET sensors [12,[19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Study of the Phase Relationship between Noise Cathode Currents in Electrochemical Motion Sensors to Determine the Mechanism of Self-Noise

Zhubanyshkaliyev,

Shabalina,

Agafonov

2023

Preprint

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Design, Modeling and Simulation of a Liquid Jet Gyroscope Based on Electrochemical Transducers

et al. 2021

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We propose a novel liquid jet gyroscope based on electrochemical transducers, which uses electrolyte as the jet medium, and two electrochemical transducers placed symmetrically as the velocity measuring unit. The gyroscope includes a fluid pump to generate a jet flow, which flows into the jet chamber. Then, it is diverged into the shunt channels, pumped into reflux channels and merged by a fluid pump. The velocities of shunt flows are measured by two electrochemical transducers. The feasibility of the method was demonstrated in theory, and a 2D finite element model was built to simulate the dynamics of the liquid jet gyroscope. Simulation results confirm the effectiveness of the gyroscope, which has higher sensitivity in the near DC frequency band.

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Study of Transfer Characteristics of a Molecular Electronic Sensor for Borehole Surveys at High Temperatures and Pressures

Evseev

Zaitsev

Agafonov

2019

Sensors

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The paper considers the development and experimental study of the characteristics of a high-temperature motion parameter sensor based on molecular-electronic technology (MET) operating at elevated pressures. Studies were conducted in an extended temperature range (25–125 °C) with a static external pressure of up to 10 atm. A pilot plant based on a high-pressure chamber with the ability to output an electrical signal was specially designed and commissioned. A family of amplitude-frequency characteristics of a ME sensor in an extended temperature range was obtained for the first time. A theoretical model was constructed and verified to describe the transfer function of the sensor at high temperatures and pressures. The activation energies of active carriers were calculated, and a prediction was made about the possibility of using the developed devices for the needs of the oil and gas mining industries.

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Modeling the Convective Noise in an Electrochemical Motion Transducer

Cited by 6 publications

References 49 publications

Study of the Phase Relationship between Noise Cathode Currents in Electrochemical Motion Sensors to Determine the Mechanism of Self-Noise

Study of the Phase Relationship between Noise Cathode Currents in Electrochemical Motion Sensors to Determine the Mechanism of Self-Noise

Design, Modeling and Simulation of a Liquid Jet Gyroscope Based on Electrochemical Transducers

Study of Transfer Characteristics of a Molecular Electronic Sensor for Borehole Surveys at High Temperatures and Pressures

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