Design of a Low-Cost Acquisition System to Reconstruct Images through Electrical Resistance Tomography

Moura, Bruno Furtado de; Martins, Márcio Ferreira; Palma, Francisco Hernán Sepúlveda; Silva, Wellington Betencurte da; Cabello, Jorge Acevedo; Ramos, Rogério

doi:10.1109/tla.2020.9381801

Cited by 9 publications

(4 citation statements)

References 28 publications

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“…Comparatively to other tomographic techniques all modalities are low-cost builds, viable to be portable, and allow for relatively fast data acquisition with simple operation, increased handling safety (because no harmful radiation is used) and their robust construction is a good match with most industrial environments [72][73][74][75]. A schematic representation of the main components in an electrical tomographic system is shown in Figure 18.…”

Section: Electrical Tomographymentioning

confidence: 99%

Experimental Characterization Techniques for Solid-Liquid Slurry Flows in Pipelines: A Review

Silva

2022

Processes

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In industrial environments, having instrumentation able to attain fast, accurate, and autonomous measurements is pivotal to understanding the dynamics of liquid and particles during transport. Ideally, these instruments, consisting of either probes or sensors, should be robust, fast, and unintrusive, i.e., not cause interference on the very flows being monitored, and require minimal maintenance. Beyond monitoring, the process knowledge gained through real time inspection allows teams to make informed technical decisions based on particle behavior, i.e., settling of particles causing pipe wear and clustering or blockages that can damage the unit or cause shutdowns, both of which with economical drawbacks. The purpose of this review is to examine experimental measurement techniques used to characterize physical properties and operational parameters of solid-liquid slurry flows, focusing on non-ionizing radiation methods. With this text the intent is not to provide an exhaustive examination of each individual technique but rather an overview on the most pertinent types of instrumentation, which will be presented, in addition to application examples from the literature, while directing the reader for pertinent seminal and review papers for a more in-depth analysis.

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Section: Electrical Tomographymentioning

confidence: 99%

Experimental Characterization Techniques for Solid-Liquid Slurry Flows in Pipelines: A Review

Silva

2022

Processes

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“…As one may notice, the data acquisition system has the same structure as the EIT systems [27][28][29][30]. Attention must be taken to the current magnitude, which must be adjustable.…”

Section: Data Acquisition Systemmentioning

confidence: 99%

“…The measurement protocol proposed is implemented on the system described in [28] to validate the method, figure 6. It is considered a circular vessel with a diameter of 144 mm, containing 16 stainless steel electrodes with a hemispherical shape with a diameter of 18 mm, figure 6.…”

Section: Experimental Measurementsmentioning

confidence: 99%

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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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EIT Performance Criteria According to Variations in Conductivity

Mata

Moura

Martins³

et al. 2022

Lecture Notes in Mechanical Engineering

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Design of a Low-Cost Acquisition System to Reconstruct Images through Electrical Resistance Tomography

Cited by 9 publications

References 28 publications

Experimental Characterization Techniques for Solid-Liquid Slurry Flows in Pipelines: A Review

Experimental Characterization Techniques for Solid-Liquid Slurry Flows in Pipelines: A Review

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

EIT Performance Criteria According to Variations in Conductivity

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