Wire-Mesh Sensor Super-Resolution Based on Statistical Reconstruction

Dias, Felipe de Assis; Pipa, Daniel Rodrigues; Morales, Rigoberto E. M.; Silva, Marco J. da

doi:10.1109/tim.2021.3058362

Cited by 8 publications

(8 citation statements)

References 23 publications

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“…The first one is created based on standard FEM models reported in the literature, i.e. [36], [40], [43]. Along this paper we will refer to this approach as (basic/standard FEM model).…”

Section: Wire-mesh Sensor Modeling By Femmentioning

confidence: 99%

“…Since one of the media used in this work is tap water (conductivity ∼420 µS/cm and relative permittivity ∼ 80), the measurement signal is related to both conductivity and relative permittivity of the fluids. Different from other works, where the measurements were based only on the conductivity [27], [38], [41], [43] or permittivity [36], [40], we have considered both electrical properties.…”

Section: ) Boundary Condition and Field Simulationmentioning

confidence: 99%

“…Based on this fact, many researchers have employed FEM to generate a sensitivity matrix of WMS in order to improve the sensor resolution [37]- [39]. In this direction, Dias et al [40] used field simulation combined with experimental flow data to improve not only the spatial resolution, but also the average void fraction estimation from WMS with a reduced number of electrodes.…”

Section: Introductionmentioning

confidence: 99%

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Combined Finite Element and Electronic Circuit Model of a Wire-Mesh Sensor

et al. 2021

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A new wire-mesh sensor model based on electric field and circuit simulations is presented. In our approach, the excitation and amplification stages of the capacitance WMS are created as macromodels and coupled to the electrodes of a 3D geometry of the sensor. Thus, the effects caused by nonideal characteristics of the amplifiers are considered (e.g. finite open-loop gain and bandwidth). In order to evaluate the performance of the model, a static validation based on phantom measurement was performed. The phantoms were created with paraffin to emulate typical flow regimes, i.e. annular, slug and bubble flow. A mapping containing the position and the electrical properties of the patterns was obtained by image processing and incorporated to the field simulation. Hence the numerical simulations could be directly compared to the experimental data. The results show that coupling the external circuits to the capacitance WMS model is crucial to provide reliable synthetic data.

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“…The first one is created based on standard FEM models reported in the literature, i.e. [36], [40], [43]. Along this paper we will refer to this approach as (basic/standard FEM model).…”

Section: Wire-mesh Sensor Modeling By Femmentioning

confidence: 99%

Section: ) Boundary Condition and Field Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Combined Finite Element and Electronic Circuit Model of a Wire-Mesh Sensor

et al. 2021

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“…In [13], experiments suggested that Maxwell-Garnett and logarithmic mixture models are more suitable for intermittent oilwater flows. In [14], the logarithmic model is used in a reconstruction algorithm not only to improve the spatial resolution, but also to correct the phase fraction estimation of WMSs with a reduced number of electrode wires.…”

Section: Introductionmentioning

confidence: 99%

Improvement of wire-mesh sensor accuracy via adapted circuit design and integrated energy loss measurement

Dias

Wiedemann

Schleicher

et al. 2022

Meas. Sci. Technol.

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We reviewed the electronic principles and design of the wire-mesh sensor with respect to inherent energy losses. From the analysis we derived a new circuit design with an optimized ampliﬁer circuit and extended the sensor by an extra transmitter electrode embedded into the dielectric construction material. The latter allows an inherent determination of the energy losses that cannot be suppressed by circuit optimization only. Experimental analysis showed that we achieve an improvement in measurement accuracy with respect to the local and average phase fractions. Deviations in a single crossing point are reduced from more than 30% down to less than 5% and deviations in the average phase fraction are reduced from more than 15% down to less than 2%.

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“…The wire-mesh sensor is an intrusive type that measures the voltage from a mesh set on the flow [3][4][5]. It is possible to obtain an image of the flow that is utilized to identify the flow pattern and calculate the void-fraction profile [6].…”

Section: Introductionmentioning

confidence: 99%

A novel methodology to measure the film thickness profile based on current stimulation for two-phase flow

Moura¹,

Mata²,

Martins³

et al. 2021

Meas. Sci. Technol.

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The film thickness of a two-phase flow is a parameter of interest since it is of importance to the heat and mass transfer phenomena. A novel method is proposed based on electrical impedance tomography (EIT) and conductance sensors to measure this quantity. An analytical equation is developed to relate the differential voltage associated with a current injection on the domain and the angular film thickness profile. A characteristic of the measuring procedure is that it presents a high sensitivity when the thickness is small, with the possibility of adjustment using different magnitudes of current. This model is compared experimentally and by the complete electrode model (CEM), solved by finite elements method (FEM). Results presented a good agreement with the FEM simulations, and the experimental results presented systematic error caused by the fringe effect.

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Wire-Mesh Sensor Super-Resolution Based on Statistical Reconstruction

Cited by 8 publications

References 23 publications

Combined Finite Element and Electronic Circuit Model of a Wire-Mesh Sensor

Combined Finite Element and Electronic Circuit Model of a Wire-Mesh Sensor

Improvement of wire-mesh sensor accuracy via adapted circuit design and integrated energy loss measurement

A novel methodology to measure the film thickness profile based on current stimulation for two-phase flow

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