IEEE Latin America Transactions · 2020 · 14 citations · 22 references
EngineeringBiomedical EngineeringElectrical EngineeringBiomedical ImagingDiagnostic ImagingDigital ImagingElectrical MeasurementFlow MeasurementImage AcquisitionImage ReconstructionImagingMedical ImagingElectrical Impedance TomographyImpedance ReconstructionMultiphase Flow DynamicsSignal-to-noise RatioTomographic AcquisitionTomographic ImagingTomographic ReconstructionTomographic System Design
Electrical Resistance Tomography (ERT) is a technique employed in the industrial environment that reconstructs images formed by the impedance distributions inside a vessel. The method relies on measures from a data acquisition system, responsible to inject a current inside the vessel and measures the voltage on the boundaries, and sequentially an inverse problem solution. This paper introduces a low-cost design of an acquisition system that can obtain 30 images/s with a signal-to-noise ratio of 57.47 dB and a maximum error of 3.79%. It utilizes a simple RMS-to-DC converter demodulation scheme to provide good accessibility to researchers aimed at investigating flow patterns of multiphase flow applications.
22
Electrical resistivity tomography of vadose water movement
William Daily, Abelardo Ramirez, Douglas LaBrecque et al. · Water Resources Research · 1992 · 537 citations