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Sensors, Volume 23, Issue 20

October-2 2023 - 311 articles

Cover Story: Thermal tomography (TT) is a promising non-contact nondestructive imaging method for the detection of pores in metallic structures printed with the laser powder bed fusion (LPBF) additive manufacturing method. We introduce a novel multi-task learning (MTL) approach, which simultaneously performs a classification of synthetic TT images and segmentation of experimental scanning electron microscopy (SEM) images. Synthetic TT images are obtained from computer simulations of metallic structures with subsurface elliptical-shape defects, while experimental SEM images are obtained from imaging of LPBF-printed stainless-steel coupons. The results of this study show that the MTL network performs better in both the classification and segmentation tasks, as compared to the conventional approach when the individual tasks are performed independently of each other. View this paper
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Articles (311)

  • Article
  • Open Access
6 Citations
2,499 Views
14 Pages

High Isolation, Double-Clamped, Magnetoelectric Microelectromechanical Resonator Magnetometer

  • Thomas Mion,
  • Michael J. D’Agati,
  • Sydney Sofronici,
  • Konrad Bussmann,
  • Margo Staruch,
  • Jason L. Kost,
  • Kevin Co,
  • Roy H. Olsson and
  • Peter Finkel

21 October 2023

Magnetoelectric (ME)-based magnetometers have garnered much attention as they boast ultra-low-power systems with a small form factor and limit of detection in the tens of picotesla. The highly sensitive and low-power electric readout from the ME sens...

  • Article
  • Open Access
16 Citations
3,167 Views
18 Pages

21 October 2023

Unmanned Aerial Vehicle (UAV) thermal imagery is rapidly becoming an essential tool in precision agriculture. Its ability to enable widespread crop status assessment is increasingly critical, given escalating water demands and limited resources, whic...

  • Article
  • Open Access
5 Citations
4,336 Views
15 Pages

21 October 2023

The aim of this study was to determine the muscle activations of the dominant arm during the forehand stroke of wheelchair tennis. Five players participated in the present study (age: 32.6 ± 9.9 years; body mass: 63.8 ± 3.12 kg; height:...

  • Article
  • Open Access
1 Citations
2,034 Views
22 Pages

Investigation of Material Loading on an Evolved Antecedent Hexagonal CSRR-Loaded Electrically Small Antenna

  • Jake Peng Sean Ng,
  • Yee Loon Sum,
  • Boon Hee Soong and
  • Paulo J. M. Monteiro

21 October 2023

Recent advances in embedded antenna and sensor technologies for 5G communications have galvanized a response toward the investigation of their electromagnetic performance for urban contexts and civil engineering applications. This article quantitativ...

  • Article
  • Open Access
2 Citations
3,460 Views
16 Pages

A Customisable Data Acquisition System for Open-Source Hyperspectral Imaging

  • Yiwei Mao,
  • Christopher H. Betters,
  • Samuel Garske,
  • Jeremy Randle,
  • K. C. Wong,
  • Iver H. Cairns and
  • Bradley J. Evans

21 October 2023

Hyperspectral imagers, or imaging spectrometers, are used in many remote sensing environmental studies in fields such as agriculture, forestry, geology, and hydrology. In recent years, compact hyperspectral imagers were developed using commercial-off...

  • Article
  • Open Access
7 Citations
3,174 Views
14 Pages

Accelerometric Classification of Resting and Postural Tremor Amplitude

  • Christina van der Linden,
  • Thea Berger,
  • Gregor A. Brandt,
  • Joshua N. Strelow,
  • Hannah Jergas,
  • Juan Carlos Baldermann,
  • Veerle Visser-Vandewalle,
  • Gereon R. Fink,
  • Michael T. Barbe and
  • Jan Niklas Petry-Schmelzer
  • + 1 author

21 October 2023

Clinical rating scales for tremors have significant limitations due to low resolution, high rater dependency, and lack of applicability in outpatient settings. Reliable, quantitative approaches for assessing tremor severity are warranted, especially...

  • Article
  • Open Access
8 Citations
2,435 Views
29 Pages

A Rolling Bearing Fault Feature Extraction Algorithm Based on IPOA-VMD and MOMEDA

  • Kang Yi,
  • Changxin Cai,
  • Wentao Tang,
  • Xin Dai,
  • Fulin Wang and
  • Fangqing Wen

21 October 2023

Since the rolling bearing fault signal captured by a vibration sensor contains a large amount of background noise, fault features cannot be accurately extracted. To address this problem, a rolling bearing fault feature extraction algorithm based on i...

  • Article
  • Open Access
18 Citations
4,771 Views
15 Pages

Diffusion Model for DAS-VSP Data Denoising

  • Donglin Zhu,
  • Lei Fu,
  • Vladimir Kazei and
  • Weichang Li

21 October 2023

Distributed acoustic sensing (DAS) has emerged as a transformational technology for seismic data acquisition. However, noise remains a major impediment, necessitating advanced denoising techniques. This study pioneers the application of diffusion mod...

  • Article
  • Open Access
1 Citations
2,391 Views
19 Pages

A Monoblock Light-Scattering Milk Fat Percentage and Somatic Cell Count Sensor for Use in Milking Systems

  • Alexey V. Shkirin,
  • Maxim E. Astashev,
  • Dmitry N. Ignatenko,
  • Nikolai V. Suyazov,
  • Sergey N. Chirikov,
  • Vladimir V. Kirsanov,
  • Dmitriy Y. Pavkin,
  • Yakov P. Lobachevsky and
  • Sergey V. Gudkov

21 October 2023

A monoblock light-scattering sensor, which is capable of measuring the fat content of milk and indicating the excess by which the somatic cell count (SCC) is over the permissible level, has been developed for installation in dairy systems. In order f...

  • Article
  • Open Access
4 Citations
2,086 Views
33 Pages

21 October 2023

Different techniques are used to analyze annular flow, but the more interesting ones are those techniques that do not perturb the flow and provide enough resolution to clearly distinguish the interfacial phenomena that take place at the interface, es...

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Sensors - ISSN 1424-8220