Rok 2018

• 3D MODELLING OF CYLINDRICAL-SHAPED OBJECTS FROM LIDAR DATA - AN ASSESSMENT BASED ON THEORETICAL MODELLING AND EXPERIMENTAL DATA

  Publikacja

  • K. Bobkowska
  • A. Janowski
  • J. Szulwic

  - Metrology and Measurement Systems - Rok 2018

  Despite the increasing availability of measured laser scanning data and their widespread use, there is still the problem of rapid and correct numerical interpretation of results. This is due to the large number of observations that carry similar information. Therefore, it is necessary to extract from the results only the essential features of the modelled objects. Usually, it is based on a process using filtration, followed by...

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• A random signal generation method for microcontrollers with DACs

  Publikacja

  • Z. Czaja
  • M. Kowalewski

  - Metrology and Measurement Systems - Rok 2018

  A new method of noise generation based on software implementation of a 7-bit LFSR based on a common polynomial PRBS7 using microcontrollers equipped with internal ADCs and DACs and a microcontroller noise generator structure are proposed in the paper. Two software applications implementing the method: written in ANSI C and based on the LUT technique and written in AVR Assembler are also proposed. In the method the ADC results are...

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• APPLICATION OF STATISTICAL FEATURES AND MULTILAYER NEURAL NETWORK TO AUTOMATIC DIAGNOSIS OF ARRHYTHMIA BY ECG SIGNALS

  Publikacja

  • A. B. Slama
  • Ł. Lentka
  • A. Mouelhi
  • M. F. Diouani
  • M. Sayadi
  • J. Smulko

  - Metrology and Measurement Systems - Rok 2018

  Abnormal electrical activity of heart can produce a cardiac arrhythmia. The electrocardiogram (ECG) is a non-invasive technique which is used as a diagnostic tool for cardiac diseases. Non-stationarity and irregu- larity of heartbeat signal imposes many difficulties to clinicians (e.g., in the case of myocardial infarction arrhythmia). Fortunately, signal processing algorithms can expose hidden information within ECG signal contaminated...

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• Computationally efficient two-objective optimization of compact microwave couplers through corrected domain patching

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - Metrology and Measurement Systems - Rok 2018

  Finding an acceptable compromise between various objectives is a necessity in the design of contemporary microwave components and circuits. A primary reason is that most objectives are at least partially conflicting. For compact microwave structures, the design trade-offs are normally related to the circuit size and its electrical performance. In order to obtain comprehensive information about the best possible trade-offs, multi-objective...

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• Economical methods for measuring road surface roughness

  Publikacja

  • D. Grabowski
  • M. Szczodrak
  • A. Czyżewski

  - Metrology and Measurement Systems - Rok 2018

  Two low-cost methods of estimating the road surface condition are presented in the paper, the first one based on the use of accelerometers and the other on the analysis of images acquired from cameras installed in a vehicle. In the first method, miniature positioning and accelerometer sensors are used for evaluation of the road surface roughness. The device designed for installation in vehicles is composed of a GPS receiver and...

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• EVALUATION OF SOUND QUALITY FEATURES ON ENVIRONMENTAL NOISE EFFECTS – A CASE STUDY APPLIED TO ROAD TRAFFIC NOISE

  Publikacja

  • W. Paszkowski
  • J. Kotus
  • T. Poremski
  • B. Kostek

  - Metrology and Measurement Systems - Rok 2018

  The paper shows a study on the relationship between noise measures and sound quality (SQ) features that are related to annoyance caused by the traffic noise. First, a methodology to perform analyses related to the traffic noise annoyance is described including references to parameters of the assessment of road noise sources. Next, the measurement setup, location and results are presented along with the derived sound quality features....

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Rok 2019

• A design framework for rigorous constrained EM-driven optimization of miniaturized antennas with circular polarization

  Publikacja

  • A. Bekasiewicz
  • S. Kozieł

  - Metrology and Measurement Systems - Rok 2019

  Compact radiators with circular polarization are important components of modern mobile communication systems. Their design is a challenging process which requires maintaining simultaneous control over several performance figures but also the structure size. In this work, a novel design framework for multi-stage constrained miniaturization of antennas with circular polarization is presented. The method involves sequential optimization...

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• Accuracy assessment of mobile satellite measurements in relation to the geometrical layout of rail tracks

  Publikacja

  • C. Specht
  • W. Koc
  • P. Chrostowski
  • J. Szmagliński

  - Metrology and Measurement Systems - Rok 2019

  The paper presents the campaigns of mobile satellite measurements, carried out in 2009–2015 on the railway and tram lines. The accuracy of the measurement method has been analysed on the basis of the results obtained in both horizontal and vertical planes. The track axis deviation from the defined geometric shape has been analysed in the areas clearly defined in terms of geometry, i.e. on the straight sections and sections with...

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• DIAGNOSIS OF MALIGNANT MELANOMA BY NEURAL NETWORK ENSEMBLE-BASED SYSTEM UTILISING HAND-CRAFTED SKIN LESION FEATURES

  Publikacja

  • M. Grochowski
  • A. Mikołajczyk-Bareła (dawniej: A. Mikołajczyk)
  • A. Kwasigroch

  - Metrology and Measurement Systems - Rok 2019

  Malignant melanomas are the most deadly type of skin cancer but detected early have high chances for successful treatment. In the last twenty years, the interest of automated melanoma recognition detection and classification dynamically increased partially because of public datasets appearing with dermatoscopic images of skin lesions. Automated computer-aided skin cancer detection in dermatoscopic images is a very challenging task...

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• Electrochemical capacitor temperature fluctuations during charging/discharging processes

  Publikacja

  • S. Galla
  • A. Szewczyk
  • Ł. Lentka

  - Metrology and Measurement Systems - Rok 2019

  Thepaperpresentsaproposalofusingadditionalstatisticalparameterssuchas:standarddeviation,variance, maximum and minimum increases of the observed value that were determined during measurements of temperature fields created on the surface of the tested electrochemical capacitor. The measurements were carriedoutusingthermographicmethodsinordertosupportassessmentoftheconditionofelectrochemical capacitorunderclassicdurabilitytestsbasedonmethodsofdeterminationofcapacityandequivalentseries...

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• FIBRE-OPTIC SENSOR FOR SIMULTANEOUS MEASUREMENT OF THICKNESSAND REFRACTIVE INDEX OF LIQUID LAYERS

  Publikacja

  • M. J. Marzejon (dawniej: M. Marzejon)
  • K. Karpienko
  • A. Mazikowski
  • M. Szczerska

  - Metrology and Measurement Systems - Rok 2019

  In this paper, we present a fibre-optic sensor for simultaneous measurement of refractive index and thickness of liquid layers. We designed an experimental low-coherence setup with two broadband light sources and an extrinsic fibre-optic Fabry–Pérot interferometer acting as the sensing head. We examined how the refractive index of a liquid film and its thickness affect spectrum at the output of a fibre-optic interferometer. We...

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Rok 2013

• A family of new generation miniaturized impedance analyzers for technical object diagnostics

  Publikacja

  • J. Hoja
  • G. Lentka

  - Metrology and Measurement Systems - Rok 2013

  The paper presents the family of three analyzers allowing to measure impedance in range of 10 ohm<|Zx|<10 Gohm in a wide frequency range from 10 mHz up to 100 kHz. The most important features of the analyzers family are: miniaturization, low power consumption, low production cost, telemetric controlling and the use of impedance measurement method based on digital signal processing DSP. The miniaturization and other above mentioned...

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• Analogue CMOS ASICs in Image Processing Systems

  Publikacja

  • W. Jendernalik
  • G. Blakiewicz
  • A. Handkiewicz
  • M. Melosik

  - Metrology and Measurement Systems - Rok 2013

  In this paper a survey of analog application specific integrated circuits (ASICs) for low-level image processing, called vision chips, is presented. Due to the specific requirements, the vision chips are designed using different architectures best suited to their functions. The main types of the vision chip architectures and their properties are presented and characterized on selected examples of prototype integrated circuits (ICs)...

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• Application of Infrared Thermography to Non-Contact Testing of Varistors

  Publikacja

  • S. Galla
  • A. Konczakowska

  - Metrology and Measurement Systems - Rok 2013

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• Application of infrared thermoography to non-contact testing of varistors

  Publikacja

  • S. Galla
  • A. Konczakowska

  - Metrology and Measurement Systems - Rok 2013

  Testing of varistors using thermography was carried out in order to assess their protective properties against possible overvoltage phenomena in the form of high-level voltage surges. An advantage of the thermography technique is non-contact temperature measurement. It was proposed to assess the properties of varistors workingin electronic devices as protective elements, on the basis of estimating temperature increments on varist...

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• Efficiency of linear and non-linear classifiers for gas identification from electrocatalytic gas sensor

  Publikacja

  • P. Kalinowski
  • Ł. Woźniak
  • A. Strzelczyk
  • P. Jasiński
  • G. Jasiński

  - Metrology and Measurement Systems - Rok 2013

  Electrocatalytic gas sensors belong to the family of electrochemical solid state sensors. Their responses are acquired in the form of I-V plots as a result of application of cyclic voltammetry technique. In order to obtain information about the type of measured gas the multivariate data analysis and pattern classification techniques can be employed. However, there is a lack of information in literature about application of such...

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• Fast High-Impedance Spectroscopy Method Using SINC Signal Excitation

  Publikacja

  • M. Kowalewski
  • G. Lentka

  - Metrology and Measurement Systems - Rok 2013

  In this paper the method of fast impedance spectroscopy of technical objects with high impedance (|Zx| > 1 Gohm) is evaluated by means of simulation and practical experiment. The method is based on excitation of an object with a sinc signal and sampling response signals proportional to current flowing through and voltage across the measured impedance. The object impedance spectrum is obtained with use of continuous Fourier transform...

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Rok 2016

• A High-Efficient Low-Voltage Rectifier for CMOS Technology

  Publikacja

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

  - Metrology and Measurement Systems - Rok 2016

  A new configuration of rectifier suiting CMOS technology is presented. The rectifier consists of only two nchannel MOS transistors, two capacitors and two resistors; for this reason it is very favourable in manufacturing in CMOS technology. With these features the rectifier is easy to design and cheap in production. Despite its simplicity, the rectifier has relatively good characteristics, the voltage and power efficiency, and...

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• A system for acoustic field measurement employing cartesian robot

  Publikacja

  • M. Szczodrak
  • A. Kurowski
  • J. Kotus
  • A. Czyżewski
  • B. Kostek

  - Metrology and Measurement Systems - Rok 2016

  A system setup for measurements of acoustic field, together with the results of 3D visualisations of acoustic energy flow are presented in the paper. Spatial sampling of the field is performed by a Cartesian robot. Automatization of the measurement process is achieved with the use of a specialized control system. The method is based on measuring the sound pressure (scalar) and particle velocity (vector) quantities. The aim of the...

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• An Implementation of a Compact Smart Resistive Sensor Based on a Microcontroller with an Internal ADC

  Publikacja

  • Z. Czaja

  - Metrology and Measurement Systems - Rok 2016

  In the paper a new implementation of a compact smart resistive sensor based on a microcontroller with internal ADCs is proposed and analysed. The solution is based only on a (already existing in the system) microcontroller and a simple sensor interface circuit working as a voltage divider consisting of a reference resistor and the resistive sensor connected in parallel with an interference suppression capacitor. The measurement...

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• Detection of gaseous compounds with different techniques

  Publikacja

  • J. Mikołajczyk
  • Z. Bielecki
  • T. Stacewicz
  • J. Smulko
  • J. Wojtas
  • D. Szabra
  • Ł. Lentka
  • A. Prokopiuk
  • P. Magryta

  - Metrology and Measurement Systems - Rok 2016

  Sensing technology has been developed for detection of gases in some environmental, industrial, medical, and scientific applications. The main tasks of these works is to enhance performance of gas sensors taking into account their different applicability and scenarios of operation. This paper presents the descriptions, comparison and recent progress in some existing gas sensing technologies. Detailed introduction to optical sensing...

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Rok 2006

• A method of identification of RTS components in noise signals

  Publikacja

  • J. A. Cichosz
  • A. Szatkowski
  • A. Konczakowska

  - Metrology and Measurement Systems - Rok 2006

  W artykule przedstawiono oryginalną metodę wydzielania szumu RTS (Random Telegraph Signal) - dwupoziomowego lub wielopoziomowego - z sygnału szumowego. Podstawą oceny jakości metody jest założenie, że wartości chwilowe szumu RTS mają rozkład niegaussowski natomiast pozostała część sygnału ma rozkład gaussowski.Algorytm identyfikacji wielopoziomowych szumów RTS w sygnałach szumowych małej częstotliwości oparty został na aproksymacji...

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Rok 2010

• A method of RTS noise identification in noise signals of semiconductor devices in the time domain

  Publikacja

  • B. Stawarz-Graczyk
  • D. Dokupil
  • P. Flisikowski

  - Metrology and Measurement Systems - Rok 2010

  In the paper a new method of Random Telegraph Signal (RTS) noise identification is presented. The method is based on a standardized histogram of instantaneous noise values and processing by Gram-Charlier series. To find a device generating RTS noise by the presented method one should count the number of significant coefficients of the Gram-Charlier series. This would allow to recognize the type of noise. There is always one (first)...

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• Algorithms of chemicals detection using raman spectra

  Publikacja

  • A. Kwiatkowski
  • J. Smulko
  • M. Gnyba
  • P. Wierzba

  - Metrology and Measurement Systems - Rok 2010

  Raman spectrometers are devices which enable fast and non-contact identification of examined chemicals. These devices utilize the Raman phenomenon to identify unknown and often illicit chemicals (e.g. drugs, explosives)without the necessity of their preparation. Now, Raman devices can be portable and therefore can be more widely used to improve security at public places. Unfortunately, Raman spectra measurements is a challenge...

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• Current measurement and analysis for induction motor diagnostics

  Publikacja

  • L. Swędrowski

  - Metrology and Measurement Systems - Rok 2010

  Przedstawiono sposób diagnozowania łożysk tocznych w silnikach indukcyjnych z wykorzystaniem pomiarów i analizy prądu zasilającego silnik. Zaprezentowano metodę pomiarową i opracowania danych diagnostycznych. Uzyskano zgodność częstotliwości składowych widma prądu otrzymanych z badań teoretycznych i eksperymentalnych.Podano wyniki badań łożysk o róznych uszkodzeniach i prawdopodobieństwa poprawnych diagnoz.

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• Distribution of roughness and waviness components of turned surface profiles

  Publikacja

  • A. Boryczko

  - Metrology and Measurement Systems - Rok 2010

  The paper presents a spectral formulation of surface profile irregularity in a wideband frequency range for roughness, waviness and shape components along the measured length. A unique distribution of roughness and waviness components is proposed, according to the nature of their origination in the course of machining with tools of defined cutting edge, as distinct from standard filtration in measurements of surface irregularities....

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• Electrochemical sensor for measurement of volatile organic compounds employing square wave perturbation voltage

  Publikacja

  • J. Gębicki
  • A. Kloskowski

  - Metrology and Measurement Systems - Rok 2010

  The paper presents the results of investigation on a prototype sensor for measurement of benzaldehyde in air. Sensitivity and limit of quantification of the sensor were determined for different internal electrolyte using the square wave voltammetry (SWV) as a detection technique. The working and counter electrodes were made of platinum. Ionic liquids 1-hexyl, 3-methylimidazolium chloride,1-hexyl, 3-methylimidazolium bis (trifluoromethanesulfonyl)...

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Rok 2003

• A metrological analysis of the input circuit of an impedance meter.

  Publikacja

  • J. Hoja

  - Metrology and Measurement Systems - Rok 2003

  W pracy przeprowadzono analizę obwodu wejściowego miernika impedancji W analizie obwodu wejściowego, uwzględniono najważniejsze czynniki wpływające na sygnały na jego wejściu: parametry zmiennoprądowe zastosowanych wzmacniaczy, rezystancję zakresową przetwornika prąd-napięcie, pojemności montażowe. Przeprowadzono symulację sygnałów wydzielanych w obwodzie dla różnych wartości pojemności pasożytniczych, następnie dokonano badań...

Rok 2007

• An automatic system for identification of random telegraph signal (RTS) noise in noise signals

  Publikacja

  • B. Stawarz-Graczyk
  • D. Załęski
  • A. Konczakowska

  - Metrology and Measurement Systems - Rok 2007

  In the paper the automatic and universal system for identification of Random Telegraph Signal (RTS) noise as a non-Gaussian component of the inherent noise signal of semiconductor devices is presented. The system for data acquisition and processing is described. Histograms of the instantaneous values of the noise signals are calculated as the basis for analysis of the noise signal to determine the number of local maxima of histograms...

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Rok 2004

• Analog fault signature based on sigma-delta modulation and oscillation-test methodology.

  Publikacja

  • W. Toczek

  - Metrology and Measurement Systems - Rok 2004

  W artykule dokonano przeglądu prac z zakresu testowania układów elektronicznych metodą oscylacyjną. Wskazując na niedostatki aktualnie stosowanej techniki testowania oscylacyjnego zaproponowano nową sygnaturę uszkodzeń dla układów analogowych. Proponowany parametr diagnostyczny jest wydobywany z odpowiedzi czasowej oscylatora testującego, w układzie złożonym z detektora szczytowego, modulatora sigma-delta oraz licznika rewersyjnego....

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Rok 2017

• Analysis of economical lighting of highways in the environment of SMOL language

  Publikacja

  • Z. Kowalczuk
  • J. Wszołek

  - Metrology and Measurement Systems - Rok 2017

  The paper puts forward and implements a method of designing and creating a modelling simulation environment for eztensive and complete analysis of economical lighting on highways. From a general design viewpoint, the proposed solution explores the concept of a network description language (SMOL), which has been designed to describe the necessary network functions, mechanisms, and devices; for the purpose of their computer simulation...

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• Analysis of Properties of an Active Linear Gesture Sensor

  Publikacja

  • K. Czuszyński
  • J. Rumiński
  • J. Wtorek

  - Metrology and Measurement Systems - Rok 2017

  Basic gesture sensors can play a significant role as input units in mobile smart devices. However, they have to handle a wide variety of gestures while preserving the advantages of basic sensors. In this paper a user-determined approach to the design of a sparse optical gesture sensor is proposed. The statistical research on a study group of individuals includes the measurement of user-related parameters like the speed of a performed...

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• Dynamic Signal Strength Mapping and Analysis by Means of Mobile Geographic Information System

  Publikacja

  • M. Kulawiak
  • W. Wycinka

  - Metrology and Measurement Systems - Rok 2017

  Bluetooth beacons are becoming increasingly popular for various applications such as marketing or indoor navigation. However, designing a proper beacon installation requires knowledge of the possible sources of interference in the target environment. While theoretically beacon signal strength should decay linearly with log distance, on-site measurements usually reveal that noise from objects such as Wi-Fi networks operating in...

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• EXAMINATION OF SOL-GEL DERIVED HYDROXYAPATITE ENHANCED WITH SILVER NANOPARTICLES USING OCT AND RAMAN SPECTROSCOPY

  Publikacja

  • M. J. Głowacki (dawniej: M. Głowacki)
  • M. Gnyba
  • P. Strąkowska
  • M. Gardas
  • M. Kraszewski
  • M. Trojanowski
  • M. Strąkowski

  - Metrology and Measurement Systems - Rok 2017

  Hydroxyapatite (HAp) has been attracting widespread interest in medical applications. In a form of coating, it enables to create a durable bond between an implant and surrounding bone tissues. With addition of silver nanoparticles HAp should also provide antibacterial activity. The aim of this research was to evaluate the composition of hydroxyapatite with silver nanoparticles in a non-destructive and non-contact way. For control measurements...

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Rok 2009

• Analyzer for spectroscopy of low-impedance objects

  Publikacja

  • J. Hoja
  • G. Lentka

  - Metrology and Measurement Systems - Rok 2009

  W artykule przedstawiono analizator umożliwiający pomiar impedancji w zakresie 1 ohma < |Zx| < 100 Mohma. Zastosowano w nim nowe rozwiązania dotyczące obwodu wejściowego i techniki detekcji fazoczułej sygnałów pomiarowych. Obwód wejściowy zaprojektowano w postaci 5-zaciskowej sondy pomiarowej, która umożliwia ograniczenie wpływu rezystancji, indukcyjności i pojemności pasożytniczych na błąd pomiaru impedancji w szerokim przedziale...

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• Built-in Test Scheme for detection, classification and evaluation of nonlinearities

  Publikacja

  • W. Toczek
  • M. Kowalewski

  - Metrology and Measurement Systems - Rok 2009

  W artykule przedstawiono koncepcję testera wbudowanego (BIST) przeznaczonego do detekcji nieliniowości, klasyfikacji rodzaju nieliniowości i oceny zniekształceń nieliniowych sygnału testowanego, bez użycia drogiego systemu automatycznego testowania. Tester bazuje na modulatorze sigma-delta umieszczonym na pakiecie testowanym i sztucznej sieci neuronowej zaimplementowanej w komputerze osobistym. Koncepcję testera zweryfikowano poprzerz...

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• Excitation-independent constant conductance isfet driver

  Publikacja

  • M. Kokot
  • T. Ossowski

  - Metrology and Measurement Systems - Rok 2009

  A new constant conductance driver for ISFETs sensors has been developed. The proposed circuit maintains the sensor operating point at constant drain-source conductance. The combination of a simple, self-balancing resistance bridge and the subtraction half (or similar fraction) of source-drain voltage from the gate-source voltage provides the independence of output signal from current and voltage drivers instability. The use of...

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Rok 2012

• Assessment of cardiovascular risk in assisted living

  Publikacja

  • J. Wtorek
  • A. Bujnowski
  • J. Rumiński
  • A. Poliński
  • M. Kaczmarek
  • A. Z. Nowakowski

  - Metrology and Measurement Systems - Rok 2012

  Wady i choroby układu krążenia są jedną z podstawowych przyczyn problemów zdrowotnych oraz przyczyn śmierci. Wczesne ich wykrycie jest szczególnie cenne jako, że może zapobiec przez poważnymi incydentami (np. zawał, udar, itp.). W artykule przedstawiono nasobny system pomiarowy integrujący wiele pomiarów przydatnych do oceny problemów kardiologicznych.Disorders of the heart and blood vessels are the leading cause of health problems...

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• Characteristics of an image sensor with early-vision processing fabricated in standard 0.35 µm CMOS technology

  Publikacja

  • W. Jendernalik
  • J. Jakusz
  • G. Blakiewicz
  • S. Szczepański
  • R. P. Piotrowski

  - Metrology and Measurement Systems - Rok 2012

  The article presents measurement results of prototype integrated circuits for acquisition and processing of images in real time. In order to verify a new concept of circuit solutions of analogue image processors, experimental integrated circuits were fabricated. The integrated circuits, designed in a standard 0.35 µm CMOS technology, contain the image sensor and analogue processors that perform low-level convolution-based image...

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• Distance measurement errors in silent FM-CW sonar with matched filtering

  Publikacja

  • J. Marszal
  • R. Salamon

  - Metrology and Measurement Systems - Rok 2012

  The secretiveness of sonar operation can be achieved by using continuous frequency-modulated sounding signalswith reduced power and significantly prolonged repeat time. The application of matched filtration in the sonarreceiver provides optimal conditions for detection against the background of white noise and reverberation, and avery good resolution of distance measurements of motionless targets. The article shows that target...

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• Distributed System For Noise Threat Evaluation Based On Psychoacoustic Measurements

  Publikacja

  • J. Kotus
  • M. Szczodrak
  • A. Czyżewski
  • B. Kostek

  - Metrology and Measurement Systems - Rok 2012

  An innovative system designed for the continuous monitoring of acoustic climate of urban areas was presentedin the paper. The assessment of environmental threats is performed using online data, acquired through a grid ofengineered monitoring stations collecting comprehensive information about the acoustic climate of urban areas.The grid of proposed devices provides valuable data for the purpose of long and short time acoustic climateanalysis....

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• Evaluation of multimedia applications in a cluster oriented environment

  Publikacja

  • H. Krawczyk
  • P. Czarnul
  • T. Dziubich

  - Metrology and Measurement Systems - Rok 2012

  In the age of Information and Communication Technology (ICT), Web and the Internet have changed significantly the way applications are developed, deployed and used. One of recent trends is modern design of web-applications based on SOA. This process is based on the composition of existing web services into a single scenario from the point of view of a particular user or client. This allows IT companies to shorten product time-to-market....

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Rok 2014

• Characterization of Optical and Electrical Properties of Transparent Conductive Boron-Doped Diamond thin Films Grown on Fused Silica

  Publikacja

  • R. Bogdanowicz

  - Metrology and Measurement Systems - Rok 2014

  A conductive boron-doped diamond (BDD) grown on a fused silica/quartz has been investigated. Diamond thin films were deposited by the microwave plasma enhanced chemical vapor deposition (MW PECVD). The main parameters of the BDD synthesis, i.e. the methane admixture and the substrate temperature were investigated in detail. Preliminary studies of optical properties were performed to qualify an optimal CVD synthesis and film parameters...

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• Emotion Monitoring – Verification of Physiological Characteristics Measurement Procedures

  Publikacja

  • A. Landowska

  - Metrology and Measurement Systems - Rok 2014

  This paper concerns measurement procedures on an emotion monitoring stand designed for tracking human emotions in the Human-Computer Interaction with physiological characteristics. The paper addresses the key problem of physiological measurements being disturbed by a motion typical for human-computer interaction such as keyboard typing or mouse movements. An original experiment...

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Rok 2011

• Comparison of Tracking Methods in Respect of Automation of Animal Behavioral Test

  Publikacja

  • M. Mazur-Milecka

  - Metrology and Measurement Systems - Rok 2011

  Automation in experiments carried out on animals is getting more and more important in research. Computers take over laborious and time-consuming activities like recording and analysing images of experiment scene. The first step in an image analysis is finding and distinguishing between the observed animals, and then tracking all objects during the experiment. In this paper four tracking methods are presented. Quantitative and...

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Rok 2002

• Conditions for measurement, analog-to-digital conversion and frequency analysis of irregularities of profile surface

  Publikacja

  • A. Boryczko

  - Metrology and Measurement Systems - Rok 2002

  Przedstawiono uwarunkowania pomiaru, przetwarzania analogowo-cyfrowego i analizy częstotliwościowej nierówności powierzchni toczonych dla celów rozpoznawania ich głównych składowych. Przedstawiono ograniczenia w pomiarze igłą, która odwzorowuje nierówności poprzeczne. Podano zależności parametrów pomiaru cyfrowego nierówności warunkujące zakresy ich rozpatrywania. Dla wartości przedziału próbkowania, dla którego nie jest spełnione...

Rok 2015

• Determination Of Gas Mixture Components Using Fluctuation Enhanced Sensing And The LS-SVM Regression Algorithm

  Publikacja

  • Ł. Lentka
  • J. Smulko
  • R. Ionescu
  • C. G. Granqvist
  • L. B. Kish

  - Metrology and Measurement Systems - Rok 2015

  This paper analyses the effectiveness of determining gas concentrations by using a prototype WO3 resistive gas sensor together with fluctuation enhanced sensing. We have earlier demonstrated that this method can determine the composition of a gas mixture by using only a single sensor. In the present study, we apply Least-Squares Support-Vector-Machine-based (LS-SVM-based) nonlinear regression to determine the gas concentration...

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Rok 2021

• EVALUATION OF LIQUID-GAS FLOW IN PIPELINE USING GAMMA-RAY ABSORPTION TECHNIQUE AND ADVANCED SIGNAL PROCESSING

  Publikacja

  • R. Hanus
  • M. Zych
  • V. Mosorov
  • A. Golijanek-Jędrzejczyk
  • M. Jaszczur
  • A. Andruszkiewicz

  - Metrology and Measurement Systems - Rok 2021

  Liquid-gas flows in pipelines appear in many industrial processes, e.g. in the nuclear, mining, and oil industry. The gamma-absorption technique is one of the methods that can be successfully applied to study such flows. This paper presents the use of thegamma-absorption method to determine the water-air flow parameters in a horizontal pipeline. Three flow types were studied in this work: plug, transitional plug-bubble,...

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Rok 2020

• EVALUATION OF THE NO2CONCENTRATION PREDICTION POSSIBILITYBASED ON STATIC AND DYNAMIC RESPONSES OF TGS SENSORSAT CHANGING HUMIDITY LEVELS

  Publikacja

  • P. Kalinowski
  • Ł. Woźniak
  • G. Jasiński
  • P. Jasiński

  - Metrology and Measurement Systems - Rok 2020

  The commercially available metal-oxide TGS sensors are widely used in many applications due to thefact that they are inexpensive and considered to be reliable. However, they are partially selective and theirresponses are influenced by various factors,e.g. temperature or humidity level. Therefore, it is importanttodesign a proper analysis system of the sensor responses. In this paper, the results of examinations of eightcommercial...

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• Exhaled breath analysis by resistive gas sensors

  Publikacja

  • T. Chludziński
  • A. Kwiatkowski

  - Metrology and Measurement Systems - Rok 2020

  Breath analysis has attracted human beings for centuries. It was one of the simplest methods to detect various diseases by using human smell sense only. Advances in technology enable to use more reliable and standardized methods, based on different gas sensing systems. Breath analysis requires the detection of volatile organic compounds (VOCs) of the concentrations below individual ppm (parts per million). Therefore, advanced detection...

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