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Wyniki wyszukiwania dla: measurement system
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Measurement of relative tool displacement to the workpiece for the assesment of influences of machining errors on surface profiles
PublikacjaZaprezentowano układ pomiarowy promieniowego i osiowego przemieszczenia narzędzia względem przedmiotu dla identyfikacji oddziaływań układu obróbkowego na formowanie struktury geometrycznej powierzchni toczonej. Zawiera on dwa analogowe tory pomiarowe przemieszczeń względnych z bezstykowymi przetwornikami i przetwarzaniem a/c oraz cyfrowy tor pomiaru obrotu przedmiotu, jego znacznik i interfejs z komputerem. Pomierzono sygnały przemieszczeń...
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Measurement of pulse signal period from incremental encorder by counters of Multifunctuin DAQ devices.
PublikacjaW artykule omówiono parametry liczników znajdujących się na wielofunkcyjnych kartach akwizycji sygnałów pomiarowych. Przedstawiono przygotowane w środowisku programowania Lab VIEW aplikacje wykorzystujące te liczniki. Służą one do pomiaru i rejestracji długości zadanej liczby okresów mierzonego sygnału oraz liczby okresów uzależnionej od ich długości (metoda zliczania zależnego z wydłużonym czasem pomiaru). Aplikacje te zostały...
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A measurement method for capacitive sensors based on a versatile direct sensor-to-microcontroller interface circuit
PublikacjaIn the paper, there is presented a new time-domain measurement method for determining the capacitance values of capacitive sensors, dedicated, among others, to capacitive relative humidity sensors. The method is based on a versatile direct sensor-to-microcontroller interface for microcontrollers with internal analog comparators (ACs) and with precision voltage reference sources, e.g. digital-to-analog converters (DACs). The reference...
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Measurement of selected characteristics of low-coherence optical signal sources for optical coherence tomography
PublikacjaOCT to nowa metoda badania wewnętrznych struktur materiałów. Wśród wielu technik detekcji sygnału optycznego wykorzystywanych w OCT najpopularniejszą i najbardziej obiecującą jest OLCR (Opticla-Low Coherence Reflectomerty - reflektometria niskokoherentna). OLCR wykorzystuje szerokopasmowe źródła, których parametry, jak np.: charakterystyka widmowa, charakterystyka szumowa, determinują właściwości metrologiczne systemu OCT. W artykule...
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Reduction of measurement data before Digital Terrain Model generation vs. DTM generalisation
PublikacjaModern data acquisition technologies provide large datasets that are not always necessary in its entirety to properly accomplish the goal of the study. In addition, such datasets are often cumbersome for rational processing, and their processing is time and labour consuming. Therefore, methods that enable to reduce the size of the measurement dataset, such as the generalization of the Digital Terrain Model (DTM) or the reduction...
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MEASUREMENT OF TEMPERATURE-DEPENDENT VISCOSITY AND THERMAL CONDUCTIVITY OF ALUMINA AND TITANIA THERMAL OIL NANOFLUIDS
PublikacjaIn this study results of simultaneous measurements of dynamic viscosity, thermal conductivity, electrical conductivity and pH of two nanofluids, i.e. thermal oil/Al2O3 and thermal oil/TiO2 are presented. Thermal oil is selected as a base liquid because of possible application in ORC systems as an intermediate heating agent. Nanoparticles were tested at the concentration of 0.1%, 1% and 5% by weight within temperature range from...
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Discussion of Derivability of Local Residual Stress Level from Magnetic Stray Field Measurement
PublikacjaThe NDT procedure dubbed ‘metal magnetic memory’ method and the related ISO 24497 standard has found wide industrial acceptance in some countries, mainly in Russia and China. The method has been claimed by some researchers (Roskosz and Bieniek in NDT&E Int 45:55–62, 2012; Wilson et al. in Sens Actuators A 135:381–387, 2007) as having potential for quantitative determination of local residual stress state in engineering structures,...
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Flicker Noise in Resistive Gas Sensors—Measurement Setups and Applications for Enhanced Gas Sensing
PublikacjaWe discuss the implementation challenges of gas sensing systems based on low-frequency noise measurements on chemoresistive sensors. Resistance fluctuations in various gas sensing materials, in a frequency range typically up to a few kHz, can enhance gas sensing by considering its intensity and the slope of power spectral density. The issues of low-frequency noise measurements in resistive gas sensors, specifically in two-dimensional...
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Frequency measurement research with weight averaging of pulse output signal of voltage-to-frequency converter
PublikacjaThe paper presents the essence and investigation of the efficiency of weight averaging of a pulse output signal of voltage-to-frequency converter. The effect of counting and the influence of interference on the result of weight averaging of frequency modulated pulses are analyzed. It is shown that from the point of view of counting error reduction, the best are polynomial weight functions. In the case of high interferences whose...
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Accounting for the distributions of input quantities in the procedure for the measurement uncertainty evaluation when calibrating the goniometer
PublikacjaThe discords concerning the measurement uncertainty evaluation in the Guide to the Expressing of Uncertainty in Measurement (GUM) and its Supplement 1 are considered. To overcome these discords, the authors of the paper propose to use the kurtosis method and the law of the propagation of the expanded uncertainty. Using the example of the goniometer calibration, the features of accounting for the distribution laws of input quantities...
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Geospatial Modeling of the Tombolo Phenomenon in Sopot using Integrated Geodetic and Hydrographic Measurement Methods
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Application of particle image velocimetry (PIV) for deformation measurement during granular silo flow.
PublikacjaW artykule przedstawiono wyniki pomiarów tensora odkształceń w materiałach granulowanych podczas przepływu silosowego Pomiary wykonano przy zastosowaniu techniki optoelektronicznej PIV dla silosów z wkładkami i bez wkładek. Wyniki porównano ze zdjęciami rentgenowskimi.
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Technical State Assessment of Charge Exchange System of Self-Ignition Engine, Based On the Exhaust Gas Composition Testing
PublikacjaThis paper presents possible use of results of exhaust gas composition testing of self - ignition engine for technical state assessment of its charge exchange system under assumption that there is strong correlation between considered structure parameters and output signals in the form of concentration of toxic compounds (ZT) as well as unambiguous character of their changes. Concentration of the analyzed ZT may be hence considered...
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Sudden death of effective entanglement
PublikacjaSudden death of entanglement is a well-known effect resulting from the finite volume of separable states. We study the case when the observer has a limited measurement capability and analyze the effective entanglement (i.e., entanglement minimized over the output data). We show that in the well-defined system of two quantum dots monitored by single-electron transistors, one may observe a sudden death of effective entanglement when...
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Frequency Diagnostics of Transformer Insulating Parameters
PublikacjaIn the article is presented experimental analysis and diagnostics of insulating system oil-paper for power transformers, mainly by progressive frequency method – dielectric spectroscopy. In the 1-st part of the article is described base theory about measurement and diagnostics insulating part (oil and paper) of power transformers. In the 2-nd part of article is described measuring method of insulating frequency diagnostics - frequency...
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The analysis of tram tracks geometrical layout based on Mobile Satellite Measurements
PublikacjaIn this article, the results of the research in a field of which uses active global navigation satellite system (GNSS) geodetic networks for the inventory of geodetic geometric tram tracks are presented. The applied measurement technique has been adapted for the designing of the geometric layout of tram tracks. Several configurations of receivers and settings of an active GNSS networks with the objective to increase the accuracy...
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Studies on optical transmittance of boron-doped nanocrystalline diamond films
PublikacjaThickness is one of the most important parameters in many applications using thin layers. This article describes thickness determination of a boron-doped nanocrystalline diamond (NCD) grown on fused silica glass. A spectroscopic measurement system has been used. A high refractive index (2.3 at 550nm) was achieved for NCD films. The thickness of NCD samples has been determined from the transmission spectrum.
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Monitoring działania wzmocnienia gruntu pod nasypem drogowym za pomocą sztywnych kolumn
PublikacjaOpis systemu pomiarowego zainstalowanego w kolumnach betonowych wzmacniających słabe podłoże gruntowe pod nasypem drogowym. Wstępne przedstawienie przykładowych wyników pomiarów. Problematyka niedokładności i odchyleń pomiarowych oraz sposób ich interpretacji.
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ECG measurement from the hand with standing - hands resting on the device - Woman 27 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Man 29 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Woman 27 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Woman 49 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with standing - hands resting on the device - Man 29 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Woman 27 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with standing - hands resting on the device - Woman 49 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Man 29 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Woman 49 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with standing - hands resting on the device - Man 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Man 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Woman 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with standing - hands resting on the device - Woman 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Woman 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with standing - hands resting on the device - Man 53 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Man 30 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Man 53 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Man 53 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with standing - hands resting on the device - Woman 24 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the table top - Woman 24 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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ECG measurement from the hand with elbows resting on the armrests of the chair - Woman 24 age
Dane BadawczeThe data set shows the measurements of the ECG signal from the hand made with the use of the proprietary measuring system, based on the AD8232 and STM32 chips. Thanks to such a constructed device, it is possible to measure the ECG signal in a non-standard way - from the hand. The results show the ECG signal for a specific hand and forearm position relative...
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The analysis of the accuracy of spatial models using photogrammetric software: Agisoft Photoscan and Pix4D
PublikacjaThis article was created as a result of research conducted within the master thesis. The purpose of the measurements was to analyze the accuracy of the positioning of points by computer programs. Selected software was a specialized computer software dedicated to photogrammetric work. For comparative purposes it was decided to use tools with similar functionality. As the basic parameters that affect the results selected the resolution...
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Signal conditioning for examination of shallow-water acoustic noise correlation properties
PublikacjaThe article describes the process of signal conditioning for examination of acoustic noise correlation properties in shallow water. Knowledge of these properties is very important for the design processes of passive and active hydroacoustic systems. This paper focuses on the above issue from the point of view of passive sonar. In sonar systems, signal processing algorithms operate on both useful acoustic signals, and accompanying...
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ECG measurement in the bathtub - drl on the outside of the bathtub on both sides, measuring electrodes on the front and back of the bathtub- men
Dane BadawczeThe measurement data shows the measurement of the ECG signal in water in the bathtub. The data includes the measurement time, the reference ECG signal from the chest, and the ECG signal measured by electrodes placed in the bathtub without contact with the human body. Using the presented data, it is possible to estimate the optimal arrangement of measuring...
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Electrical conductivity relaxation measurements - water uptake of BaCe0.6Zr0.2Y0.1Tb0.1O3-δ
Dane BadawczeFor Electrical Conductivity Relaxation (ECR) measurements, platinum reversible electrodes were applied in a four-probe arrangement and the BaCe0.6Zr0.2Y0.1Tb0.1O3-δ sample was measured in the ProboStat™ measurement system. The ECR measurements were performed in air in the temperature range of 450-800 ℃ after switching water partial pressure between...
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MEMS Technology Quality Requirements as Applied to Multibeam Echosounder
PublikacjaSmall, lightweight, power-efficient, and low-cost microelectromechanical system (MEMS) inertial sensors and microcontrollers, available in the market today, help reduce the instability of Multibeam Sonars. Current MEMS inertial measurement units (IMUs) come in many shapes, sizes, and costs — depending on the application and performance required. Although MEMS inertial sensors offer affordable, appropriately scaled units, they are...
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Evaluation of the Possibility of Identifying a Complex Polygonal Tram Track Layout Using Multiple Satellite Measurements
PublikacjaWe present the main assumptions about the algorithmization of the analysis of measurement data recorded in mobile satellite measurements. The research team from the Gda´nsk University of Technology and the Maritime University in Gdynia, as part of a research project conducted in cooperation with PKP PLK (Polish Railway Infrastructure Manager), developed algorithms supporting the identification and assessment of track axis layout....
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Evaluation of the Possibility of Identifying a Complex Polygonal Tram Track Layout Using Multiple Satellite Measurements
PublikacjaWe present the main assumptions about the algorithmization of the analysis of measurement data recorded in mobile satellite measurements. The research team from the Gda´nsk University of Technology and the Maritime University in Gdynia, as part of a research project conducted in cooperation with PKP PLK (Polish Railway Infrastructure Manager), developed algorithms supporting the identification and assessment of track axis layout....
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Wear estimation of current collector contact strips by analysis of a 3D scanning results
PublikacjaThe technical condition of current collector contact strips is very important when operational reliability of railway transportation is considered. The authors proposed a novel measurement system based on a 3D camera to register the shape and dimensions of the current collector contact strips surface. The system was installed above the railway track for tests in target ambient. During the trial operation a few dozen of contact...
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Investigation of H2:CH4 plasma composition by means of spatially resolved optical spectroscopy
PublikacjaThe system based on spatially resolved optical emission spectroscopy dedicated for in situ diagnostics of plasma assisted CVD processes is presented in this paper. Measurement system coupled with chemical vapour deposition chamber by dedicated fiber-optic paths enables investigation of spatial distribution of species densities (Hx, H+, CH, CH+) during chemical vapour deposition process. Experiments were performed for a various...
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Determination of refractive index dispersion using fiber-optic low-coherence Fabry–Perot interferometer: implementation and validation
PublikacjaWe present the implementation and validation of low-coherence Fabry–Perot interferometer for refractive index dispersion measurements of liquids. A measurement system has been created with the use of four superluminescent diodes with different optical parameters, a fiber-optic coupler and an optical spectrum analyzer. The Fabry–Perot interferometer cavity has been formed by the fiber-optic end and mirror surfaces mounted on a micromechanical...
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"Shadow" method application within endoscopic examinations of marine engines
PublikacjaThe paper deals with diagnostic issues concerning endoscopic examinations of the working spaces within marine diesel and gas turbine engines. In the beginning, the endoscopy apparatus being on the laboratory equipment of the Department of Ship Power Plants of Gdansk University of Technology in Poland has been characterized. The endoscopy considerations have been focused on theoretical bases of a digital image processing and especially...