Search results for "inductive sensor"

showing 2 items of 2 documents

Eddy current imaging with an atomic radio-frequency magnetometer

2016

We use a radio-frequency $^{85}$Rb alkali-vapor cell magnetometer based on a paraffin-coated cell with long spin-coherence time and a small, low-inductance driving coil to create highly resolved conductivity maps of different objects. We resolve sub-mm features in conductive objects, we characterize the frequency response of our technique, and by operating at frequencies up to 250 kHz we are able to discriminate between differently conductive materials based on the induced response. The method is suited to cover a wide range of driving frequencies and can potentially be used for detecting non-metallic objects with low DC conductivity.

Frequency responseTechnologyMaterials sciencePhysics - Instrumentation and DetectorsPhysics and Astronomy (miscellaneous)Atomic Physics (physics.atom-ph)MagnetometerAcousticsFOS: Physical sciences02 engineering and technology01 natural sciencesphysics.atom-phlaw.inventionPhysics - Atomic PhysicsEngineeringlaw0103 physical sciencesEddy currentInductive sensorElectrical conductorphysics.ins-detApplied Physics010302 applied physicsInstrumentation and Detectors (physics.ins-det)021001 nanoscience & nanotechnologyElectromagnetic coilPhysical SciencesRadio frequencyElectric current0210 nano-technology
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Radiometric Partial Discharge Detection: A Review

2023

One of the most common failures or breakdowns that can occur in high-voltage (HV) equipment is due to partial discharges (PDs). This occurs as a result of inadequate insulation, aging, harsh environmental effects, or manufacturing flaws. PD detection and recognition methods have gained growing attention and have seen great progress in the past decades. Radiometric methods are one of the most investigated detection approaches due to their immunity to electromagnetic interference (EMI) and their capabilities to detect and locate PD activities in different applications such as transformers, cables, etc. Several review articles have been published to classify and categorize these works. Nonethe…

UHF antennaprinted antennasinductive sensorControl and OptimizationRenewable Energy Sustainability and the EnvironmentEnergy Engineering and Power TechnologyPartial discharge detectionBuilding and Constructionradiometric detectionHV equipment diagnosiloop antennaSettore ING-IND/31 - ElettrotecnicaElectrical and Electronic EngineeringEngineering (miscellaneous)Energy (miscellaneous)
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