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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• QUASI-DISTRIBUTED NETWORK OF LOW-COHERENCE FIBER-OPTIC FABRY-PÉROT SENSORS WITH CAVITY LENGTH-BASED ADDRESSING

  Publikacja

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

  - Metrology and Measurement Systems - Rok 2021

  Distributed measurement often relies on sensor networks. In this paper, we present the construction of low coherent fiber-optic Fabry-Pérot sensors connected into a quasi-distributed network. We discuss the mechanism of spectrum modulation in this type of sensor and the constraints of assembly of such sensors in the network. Particular attention was paid to separate the signals from individual sensors, which can be achieved by...

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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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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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• Inverse and forward surrogate models for expedited design optimization of unequal-power-split patch couplers

  Publikacja

  • S. Kozieł
  • A. Bekasiewicz

  - Metrology and Measurement Systems - Rok 2019

  In the paper, a procedure for precise and expedited design optimization of unequal power split patchcouplers is proposed. Our methodology aims at identifying the coupler dimensions that correspond to thecircuit operating at the requested frequency and featuring a required power split. At the same time, thedesign process is supposed to be computationally efficient. The proposed methodology involves two typesof auxiliary models (surrogates):...

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• Investigation of optical properties of Infitec and Active Stereo stereoscopic techniques for CAVE-type virtual reality systems

  Publikacja

  • A. Mazikowski

  - Metrology and Measurement Systems - Rok 2019

  In recent years, many scientific and industrial centres in the world developed virtual reality systems or laboratories. At present, among the most advanced virtual reality systems are CAVE-type (Cave Automatic Virtual Environment) installations. Such systems usually consist of four, five, or six projection screens arranged in the form of a closed or hemi-closed space. The basic task of such systems is to ensure the effect of user...

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• MACHINE LEARNING SYSTEM FOR AUTOMATED BLOOD SMEAR ANALYSIS

  Publikacja

  • M. Grochowski
  • M. Wąsowicz
  • A. Mikołajczyk-Bareła (dawniej: A. Mikołajczyk)
  • M. Ficek
  • M. Kulka
  • M. Wróbel
  • M. Szczerska

  - Metrology and Measurement Systems - Rok 2019

  In this paper the authors propose a decision support system for automatic blood smear analysis based on microscopic images. The images are pre-processed in order to remove irrelevant elements and to enhance the most important ones - the healthy blood cells (erythrocytes) and the pathologic (echinocytes). The separated blood cells are analyzed in terms of their most important features by the eigenfaces method. The features are the...

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• Method of earth fault loop impedance measurement without nuisance tripping of RCDs in 3-phase low-voltage circuits

  Publikacja

  • S. Czapp

  - Metrology and Measurement Systems - Rok 2019

  Verification of electrical safety in low-voltage power systems includes the measurement of earth fault loop impedance. This measurement is performed to verify the effectiveness of protection against indirect contact. The widespread classic methods and meters use a relatively high value of the measuring current (5–20) A, so that they are a source of nuisance tripping of residual current devices (RCDs). The meters dedicated to circuits...

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• MULTI-OBJECTIVE OPTIMIZATION PROBLEM IN THE OptD-MULTI METHOD

  Publikacja

  • W. Błaszczak-bąk
  • A. Sobieraj-Żłobińska
  • M. Kowalik

  - Metrology and Measurement Systems - Rok 2019

  New measurement technologies, e.g. Light Detection And Ranging (LiDAR), generate very large datasets. In many cases, it is reasonable to reduce the number of measuring points, but in such a way that the datasets after reduction satisfy specific optimization criteria. For this purpose the Optimum Dataset (OptD) method proposed in [1] and [2] can be applied. The OptD method with the use of several optimization criteria is called...

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• Reduced-cost design closure of antennas by means of gradient search with restricted sensitivity update

  Publikacja

  • S. Kozieł
  • A. Pietrenko-Dąbrowska

  - Metrology and Measurement Systems - Rok 2019

  Design closure, i.e., adjustment of geometry parameters to boost the performance, is a challenging stage of antenna design process. Given complexity of contemporary structures, reliable parameter tuning requires numerical optimization and can be executed using local algorithms. Yet, EM-driven optimization is a computationally expensive endeavour and reducing its cost is highly desirable. In this paper, a modification of the trust-region...

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• Ship’s de-perming process using coils lying on seabed

  Publikacja

  • M. Wołoszyn
  • P. Jankowski

  - Metrology and Measurement Systems - Rok 2019

  A ship built from ferromagnetic steel disturbs the uniformity of the Earth’s magnetic field. Changes of ship’s signature are due to the magneto-mechanical interaction of the hull with the Earth’s magnetic field. The ship’s magnetic field can be detected by a magnetic naval mine. For this reason, the vessel has to be demagnetized. There are several methods of ship’s de-perming. The results of experimental and computer simulations...

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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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• PHASE OBJECT OBSERVATION SYSTEM BASED ON DIFFRACTION PHASE MICROSCOPY

  Publikacja

  • S. Babicz-Kiewlicz
  • B. Stawarz-Graczyk
  • P. Wierzba

  - Metrology and Measurement Systems - Rok 2018

  In the paper authors present a special measurement system for observing phase objects. The diffraction phas microscopy makes it possible to measure the dimensions of a tested object with a nanometre resolution. To meet this requirement, it is proposed to apply a spatial transform. The proposed setup can be based either on a two lenses system (called 4 f ) or a Wollaston prism. Both solutions with all construction aspects are described...

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• Portable exhaled breath analyzer employing fluctuation-enhanced gas sensing method in resistive gas sensors

  Publikacja

  • A. Kwiatkowski
  • T. Chludziński
  • J. Smulko

  - Metrology and Measurement Systems - Rok 2018

  This paper presents a portable exhaled breath analyser, developed to detect selected diseases. The set-up employs resistive gas sensors: commercial MEMS sensors and prototype gas sensors made of WO3 gas sensing layers doped with various metal ingredients. The set-up can modulate the gas sensors by applying UV light to induce physical changes of the gas sensing layers. The sensors are placed in a tiny gas chamber of a volume...

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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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• MEASUREMENT OF NOISE IN SUPERCAPACITORS

  Publikacja

  • A. Szewczyk

  - Metrology and Measurement Systems - Rok 2017

  A developed method and measurement setup for measurement of noise generated in a supercapacitor is presented. The requirements for noise data recording are considered and correlated with working modes of supercapacitors. An example of results of low-frequency noise measurements in commercially available supercapacitors are presented. The ability of flicker noise measurements suggests that they can be used to assess quality of tested supercapacitors.

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• Modelling of Mechanical Behaviour of High-Frequency Piezoelectric Actuators Using Bouc-Wen Model

  Publikacja

  • R. Kędra
  • M. Rucka

  - Metrology and Measurement Systems - Rok 2017

  The paper presents the application of a modified, symmetrical Bouc-Wen model to simulate a mechanical behaviour of high-frequency piezoelectric actuators (PAs). In order to identify parameters of the model, a two-step algorithm was utilized. In the first stage, the mechanical parameters were identified by taking into account their bilinear variability and using a square input voltage waveform. In the second step, the hysteresis...

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• Programmable Input Mode Instrumentation Amplifier Using Multiple Output Current Conveyors

  Publikacja

  • B. Pankiewicz

  - Metrology and Measurement Systems - Rok 2017

  In this paper a programmable input mode instrumentation amplifier (IA) utilising second generation, multiple output current conveyors and transmission gates is presented. Its main advantage is the ability to choose a voltage or current mode of inputs by setting the voltage of two configuration nodes. The presented IA is prepared as an integrated circuit block to be used alone or as a sub-block in a microcontroller or in a field...

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• Transmission Quality Measurements in DAB+ Broadcast System

  Publikacja

  • P. Falkowski-Gilski
  • J. Stefański

  - Metrology and Measurement Systems - Rok 2017

  In the age of digital media, delivering broadcast content to customers at an acceptable level of quality is one of the most challenging tasks. The most important factor is the efficient use of available resources, including bandwidth. An appropriate way of managing the digital multiplex is essential for both the economic and technical issues. In this paper we describe transmission quality measurements in the DAB+ broadcast system....

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• Verification of a Novel Method of Detecting Faults in Medium-Voltage Systems with Covered Conductors

  Publikacja

  • S. Mišák
  • Š. Hamacek
  • M. Bartłomiejczyk

  - Metrology and Measurement Systems - Rok 2017

  This paper describes the use of new methods of detecting faults in medium-voltage overhead lines built of covered conductors. The methods mainly address such faults as falling of a conductor, contacting a conductor with a tree branch, or falling a tree branch across three phases of a medium-voltage conductor. These faults cannot be detected by current digital relay protection systems. Therefore, a new system that can detect the...

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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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• Histogram of Oriented Gradients with Cell Average Brightness for Human Detection

  Publikacja

  • M. Wójcikowski

  - Metrology and Measurement Systems - Rok 2016

  A modification of the descriptor in a human detector using Histogram of Oriented Gradients (HOG) and Support Vector Machine (SVM) is presented. The proposed modification requires inserting the values of average cell brightness resulting in the increase of the descriptor length from 3780 to 3908 values, but it is easy to compute and instantly gives ≈ 25% improvement of the miss rate at 10‒4 False Positives Per Window (FPPW). The...

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• Metrological analysis of precision of the system of delivering a water capsule for explosive production of water aerosol

  Publikacja

  • G. Śmigielski
  • W. Toczek
  • R. Dygdała
  • K. Stefański

  - Metrology and Measurement Systems - Rok 2016

  In this paper an analysis of precision of the system controlling delivery by a helicopter of water-capsule designed for extinguishing large scale fires is presented. The analysis was performed using the numerical method of distribution propagation (Monte Carlo method) supplemented with results of application of the uncertainty propagation method. In addition the optimum conditions for the airdrop are determined to ensure achievement...

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• Reliability of Pulse Measurements in Videoplethysmography

  Publikacja

  • J. Rumiński

  - Metrology and Measurement Systems - Rok 2016

  Reliable, remote pulse rate measurement is potentially very important for medical diagnostics and screening. In this paper the Videoplethysmography was analyzed especially to verify the possible use of signals obtained for the YUV color model in order to estimate the pulse rate, to examine what is the best pulse estimation method for short video sequences and finally, to analyze how potential PPG-signals can be distinguished from...

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• Voltage Dependence of Supercapacitor Capacitance

  Publikacja

  • A. Szewczyk
  • J. Sikula
  • V. Sedlakova
  • J. Majzner
  • P. Sedlak
  • T. Kuparowitz

  - Metrology and Measurement Systems - Rok 2016

  Electronic Double-Layer Capacitors (EDLC), called Supercapacitors (SC), are electronic devices that are capable to store a relatively high amount of energy in a small volume comparing to other types of capacitors. They are composed of an activated carbon layer and electrolyte solution. The charge is stored on electrodes, forming the Helmholtz layer, and in electrolyte. The capacitance of supercapacitor is voltage- dependent. We...

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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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• Transmission Protocol Simulation Framework For The Resource-Constrained Wireless Sensor Network

  Publikacja

  • M. Wójcikowski

  - Metrology and Measurement Systems - Rok 2015

  In this paper a prototype framework for simulation of wireless sensor network and its protocols are presented. The framework simulates operation of a sensor network with data transmission, which enables simultaneous development of the sensor network software, its hardware and the protocols for wireless data transmission. An advantage of using the framework is converging simulation with the real software. Instead of creating...

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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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• Potentiometric Oxygen Sensor with Solid State Reference Electrode

  Publikacja

  • K. Dunst
  • G. Jasiński
  • P. Jasiński

  - Metrology and Measurement Systems - Rok 2014

  The concentration or the partial pressure of oxygen in an environment can be determined using different measuring principles. For high temperature measurements of oxygen, ceramic-based sensors are the most practical. They are simple in construction, exploration and maintenance. A typical oxygen potentiometric sensor consists of an oxygen ion conducting solid electrolyte and two electrodes deposited...

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• Surface irregularities as a complex signal of tool representation together with uneven displacement in respect to the workpiece

  Publikacja

  • A. Boryczko
  • W. Rytlewski

  - Metrology and Measurement Systems - Rok 2014

  In a dynamic machining process, distortion in surface irregularity is a very complex phenomenon. Surface irregularities form a periodic representation of the tool profile with various kinds of disturbance in a broad range of changes in the height and length of the profile. To discern these irregularity disturbances, interactions of the tool in the form of changes perpendicular and parallel relative to the workpiece were analyzed...

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• SURFACE TEXTURE ANALYSIS AFTER BALL END MILLING WITH VARIOUS SURFACE INCLINATION OF HARDENED STEEL

  Publikacja

  • S. Wojciechowski
  • P. Twardowski
  • M. Wieczorowski

  - Metrology and Measurement Systems - Rok 2014

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• The Effect Of Reference Plane On Values Of Areal Surface Topography Parameters From Cylindrical Elements

  Publikacja

  • P. Podulka
  • P. Dobrzański
  • P. Pawlus
  • A. Lenart

  - Metrology and Measurement Systems - Rok 2014

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• Using A Particular Sampling Method for Impedance Measurement

  Publikacja

  • G. Lentka

  - Metrology and Measurement Systems - Rok 2014

  The paper presents an impedance measurement method using a particular sampling method which is an alternative to DFT calculation. The method uses a sine excitation signal and sampling response signals proportional to current flowing through and voltage across the measured impedance. The object impedance is calculated without using Fourier transform. The method was first evaluated in MATLAB by means of simulation. The method was...

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