Rok 2020

• A 1-nS 1-V Sub-1-µW Linear CMOS OTA with Rail-to-Rail Input for Hz-Band Sensory Interfaces

  Publikacja

  • J. Jakusz
  • W. Jendernalik
  • G. Blakiewicz
  • M. Kłosowski
  • S. Szczepański

  - SENSORS - Rok 2020

  The paper presents an operational transconductance amplifier (OTA) with low transconductance (0.62–6.28 nS) and low power consumption (28–270 nW) for the low-frequency analog front-ends in biomedical sensor interfaces. The proposed OTA implements an innovative, highly linear voltage-to-current converter based on the channel-length-modulation effect, which can be rail-to-rail driven. At 1-V supply and 1-Vpp asymmetrical input driving,...

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• A Review of Emotion Recognition Methods Based on Data Acquired via Smartphone Sensors

  Publikacja

  • A. Kołakowska
  • W. Szwoch
  • M. Szwoch

  - SENSORS - Rok 2020

  In recent years, emotion recognition algorithms have achieved high efficiency, allowing the development of various affective and affect-aware applications. This advancement has taken place mainly in the environment of personal computers offering the appropriate hardware and sufficient power to process complex data from video, audio, and other channels. However, the increase in computing and communication capabilities of smartphones,...

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• Accuracy Analysis of Measuring X-Y-Z Coordinates with Regard to the Investigation of the Tombolo Effect

  Publikacja

  • R. Masnicki
  • C. Specht
  • J. Mindykowski
  • P. Dąbrowski
  • M. Specht

  - SENSORS - Rok 2020

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• Accuracy of Trajectory Tracking Based on Nonlinear Guidance Logic for Hydrographic Unmanned Surface Vessels

  Publikacja

  • A. Stateczny
  • P. Burdziakowski
  • K. Najdecka
  • B. Domagalska-Stateczna

  - SENSORS - Rok 2020

  A new trend in recent years for hydrographic measurement in water bodies is the use of unmanned surface vehicles (USVs). In the process of navigation by USVs, it is particularly important to control position precisely on the measuring profile. Precise navigation with respect to the measuring profile avoids registration of redundant data and thus saves time and survey costs. This article addresses the issue of precise navigation...

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• Analysis of Satellite Compass Error’s Spectrum

  Publikacja

  • A. Felski
  • K. Jaskólski
  • K. Zwolak
  • P. Piskur
  • P. Piskur

  - SENSORS - Rok 2020

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Rok 2019

• A Generalized SDP Multi-Objective Optimization Method for EM-Based Microwave Device Design

  Publikacja

  • L. Ying
  • Q. Cheng
  • S. Kozieł

  - SENSORS - Rok 2019

  In this article, a generalized sequential domain patching (GSDP) method for efficient multi-objective optimization based on electromagnetics (EM) simulation is proposed. The GSDP method allowing fast searching for Pareto fronts for two and three objectives is elaborated in detail in this paper. The GSDP method is compared with the NSGA-II method using multi-objective problems in the DTLZ series, and the results show the GSDP method...

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• A Highly Selective Biosensor Based on Peptide Directly Derived from the HarmOBP7 Aldehyde Binding Site

  Publikacja

  • W. Tomasz
  • B. Szulczyński
  • M. Wojciechowski
  • W. Kamysz
  • J. Gębicki

  - SENSORS - Rok 2019

  This paper presents the results of research on determining the optimal length of a peptide chain to eectively bind octanal molecules. Peptides that map the aldehyde binding site in HarmOBP7 were immobilized on piezoelectric transducers. Based on computational studies, four Odorant Binding Protein-derived Peptides (OBPPs) with dierent sequences were selected. Molecular modelling results of ligand docking with selected peptides were...

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• A Multi-Antenna Scheme for Early Detection and Mitigation of Intermediate GNSS Spoofing

  Publikacja

  • J. Magiera

  - SENSORS - Rok 2019

  This article presents a method for detecting and mitigating intermediate GNSS spoofing. In this type of attack, at its early stage, a spoofer transmits counterfeit signals which have slight time offsets compared to true signals arriving from satellites. The anti-spoofing method proposed in this article fuses antenna array processing techniques with a multipath detection algorithm. The latter is necessary to separate highly correlated...

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Rok 2021

• A Method for Underwater Wireless Data Transmission in a Hydroacoustic Channel under NLOS Conditions

  Publikacja

  • J. Mizeraczyk
  • R. Studanski,
  • A. Zak
  • A. Czapiewska

  - SENSORS - Rok 2021

  Wireless data transmission in the hydroacoustic channel under non-line-of-sight (NLOS) propagation conditions, for example, during a wreck penetration, is difficult to implement reliably. This is mostly due to the multipath propagation, which causes a reduction in the quality of data reception. Therefore, in this work an attempt has been made to develop a reliable method of wireless underwater communication test it under the NLOS...

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• A New Adaptive Method for the Extraction of Steel Design Structures from an Integrated Point Cloud

  Publikacja

  • P. Burdziakowski
  • A. Zakrzewska

  - SENSORS - Rok 2021

  The continuous and intensive development of measurement technologies for reality modelling with appropriate data processing algorithms is currently being observed. The most popular methods include remote sensing techniques based on reflected-light digital cameras, and on active methods in which the device emits a beam. This research paper presents the process of data integration from terrestrial laser scanning (TLS) and image data...

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• A Simple Neural Network for Collision Detection of Collaborative Robots

  Publikacja

  • M. Czubenko
  • Z. Kowalczuk

  - SENSORS - Rok 2021

  Due to the epidemic threat, more and more companies decide to automate their production lines. Given the lack of adequate security or space, in most cases, such companies cannot use classic production robots. The solution to this problem is the use of collaborative robots (cobots). However, the required equipment (force sensors) or alternative methods of detecting a threat to humans are usually quite expensive. The article presents...

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• Acoustic Detector of Road Vehicles Based on Sound Intensity

  Publikacja

  • G. Szwoch
  • J. Kotus

  - SENSORS - Rok 2021

  A method of detecting and counting road vehicles using an acoustic sensor placed by the road is presented. The sensor measures sound intensity in two directions: parallel and perpendicular to the road. The sound intensity analysis performs acoustic event detection. A normalized position of the sound source is tracked and used to determine if the detected event is related to a moving vehicle and to establish the direction of movement....

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• Acoustic Sensing Analytics Applied to Speech in Reverberation Conditions

  Publikacja

  • P. Odya
  • J. Kotus
  • A. Kurowski
  • B. Kostek

  - SENSORS - Rok 2021

  The paper aims to discuss a case study of sensing analytics and technology in acoustics when applied to reverberation conditions. Reverberation is one of the issues that makes speech in indoor spaces challenging to understand. This problem is particularly critical in large spaces with few absorbing or diffusing surfaces. One of the natural remedies to improve speech intelligibility in such conditions may be achieved through speaking...

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• Analysis of GNSS, Hydroacoustic and Optoelectronic Data Integration Methods Used in Hydrography

  Publikacja

  • O. Lewicka
  • M. Specht
  • A. Stateczny
  • C. Specht
  • D. Brčić
  • A. Jugović
  • S. Widźgowski
  • M. Wiśniewska

  - SENSORS - Rok 2021

  The integration of geospatial data in hydrography, performed using different measurement systems, involves combining several study results to provide a comprehensive analysis. Each of the hydroacoustic and optoelectronic systems is characterised by a different spatial reference system and the method for technical implementation of the measurement. Therefore, the integration of hydrographic data requires that problems in selected...

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Rok 2022

• A Novel Method for Intelligibility Assessment of Nonlinearly Processed Speech in Spaces Characterized by Long Reverberation Times

  Publikacja

  • A. Kurowski
  • J. Kotus
  • P. Odya
  • B. Kostek

  - SENSORS - Rok 2022

  Objective assessment of speech intelligibility is a complex task that requires taking into account a number of factors such as different perception of each speech sub-bands by the human hearing sense or different physical properties of each frequency band of a speech signal. Currently, the state-of-the-art method used for assessing the quality of speech transmission is the speech transmission index (STI). It is a standardized way...

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• Adjusting the Stiffness of Supports during Milling of a Large-Size Workpiece Using the Salp Swarm Algorithm

  Publikacja

  • K. J. Kaliński (dawniej: K. Kaliński)
  • M. Galewski
  • N. Stawicka-Morawska
  • M. Mazur
  • A. Parus

  - SENSORS - Rok 2022

  This paper concerns the problem of vibration reduction during milling. For this purpose, it is proposed that the standard supports of the workpiece be replaced with adjustable stiffness supports. This affects the modal parameters of the whole system, i.e., object and its supports, which is essential from the point of view of the relative tool–workpiece vibrations. To reduce the vibration level during milling, it is necessary to...

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• Analysis of Methods for Determining Shallow Waterbody Depths Based on Images Taken by Unmanned Aerial Vehicles

  Publikacja

  • M. Specht
  • M. Wiśniewska
  • A. Stateczny
  • C. Specht
  • B. Szostak
  • O. Lewicka
  • M. Stateczny
  • S. Widźgowski
  • A. Halicki

  - SENSORS - Rok 2022

  Hydrographic surveys enable the acquisition and processing of bathymetric data, which after being plotted onto nautical charts, can help to ensure safety of navigation, monitor changes in the coastal zone, and assess hydro-engineering structure conditions. This study involves the measurement of waterbody depth, identification of the seabed shape and geomorphology, the coastline course, and the location of underwater obstacles....

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Rok 2024

• A Review of Recent Advances in Human-Motion Energy Harvesting Nanogenerators, Self-Powering Smart Sensors and Self-Charging Electronics

  Publikacja

  • J. Gołąbek
  • M. Strankowski

  - SENSORS - Rok 2024

  In recent years, portable and wearable personal electronic devices have rapidly developed with increasing mass production and rising energy consumption, creating an energy crisis. Using batteries and supercapacitors with limited lifespans and environmental hazards drives the need to find new, environmentally friendly, and renewable sources. One idea is to harness the energy of human motion and convert it into electrical energy...

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• A Selection of Starting Points for Iterative Position Estimation Algorithms Using Feedforward Neural Networks

  Publikacja

  • J. Sadowski
  • J. Stefański

  - SENSORS - Rok 2024

  This article proposes the use of a feedforward neural network (FNN) to select the starting point for the first iteration in well-known iterative location estimation algorithms, with the research objective of finding the minimum size of a neural network that allows iterative position estimation algorithms to converge in an example positioning network. The selected algorithms for iterative position estimation, the structure of the...

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Rok 2017

• An IoT-Based Computational Framework for Healthcare Monitoring in Mobile Environments

  Publikacja

  • H. Mora
  • D. Gil
  • R. Munoz Terol
  • J. Azorin-Lopez
  • J. Szymański

  - SENSORS - Rok 2017

  The new Internet of Things paradigm allows for small devices with sensing, processing and communication capabilities to be designed, which enable the development of sensors, embedded devices and other ‘things’ ready to understand the environment. In this paper, a distributed framework based on the internet of things paradigm is proposed for monitoring human biomedical signals in activities involving physical exertion. The main...

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