Search results for: UNCERTAINTY OF MEASUREMENT, TECHNICAL METHOD, MEASUREMENT OF RESISTANCE

• Influence of the analyzing window on electrode impedance measurement by thecontinuous freqency scanning method

  Publication

  • K. Darowicki
  • P. Ślepski

  - JOURNAL OF ELECTROANALYTICAL CHEMISTRY - Year 2002

  Przeprowadzono pomiary impedancyjne modelowego układu elektrycznego RC techniką ciągłego skanowania częstotliwościowego. Wyznaczono impedancję modelowego układu dla różnych okien analizujących oraz ich różnych wielkości. Wyznaczone dla różnych okien analizujących wartości R i C porównywano z wartościami rzeczywistymi. Stwierdzono wpływ rodzaju okna analizującego oraz jego długość na dokładność otrzymywanych wyników.

• Measurement of distance, velocity and angle of arrival using FMCW-CW combined waveform

  Publication

  • D. Duraj
  • M. Płotka
  • M. Rzymowski
  • K. Nyka
  • Ł. Kulas

  - Year 2016

  A procedure of tacking small flying object based on a general principle of FMCW and Doppler radar is presented. In order to increase measurement range, this technique uses active signal source on the moving object. For simultaneous measurements of distance, radial velocity and direction (AoA) as well as simplified synchronization a combined FMCW-CW waveform is proposed. The presented measurement system was realized and verified...

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• Frequency measurement research with weight averaging of pulse output signal of voltage-to-frequency converter

  Publication

  • M. Dorozhovets
  • E. Pawłowski
  • D. Świsulski

  - MEASUREMENT - Year 2023

  The 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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• Measurement of relative tool displacement to the workpiece for the assesment of influences of machining errors on surface profiles

  Publication

  • A. Boryczko

  - MEASUREMENT - Year 2002

  Zaprezentowano 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...

• Installation of GNSS receivers on a mobile railway platform – methodology and measurement aspects

  Publication

  • P. Dąbrowski
  • C. Specht
  • W. Koc
  • A. Wilk
  • K. Czaplewski
  • K. Karwowski
  • M. Specht
  • P. Chrostowski
  • J. Szmagliński
  • S. Grulkowski

  - Zeszyty Naukowe Akademii Morskiej w Szczecinie - Year 2019

  Determining the course of a railway track axis using satellite methods relies on ensuring the precise assembly of GNSS receivers in dedicated measuring devices. Depending on the number of receivers, solutions that are based on placing the apparatus directly above the railway track axis (as well as in eccentric positions) are used to indirectly obtain data to form the basis of the desired results. This publication describes the...

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• Small city and a bridge. Landscape perspective

  Publication

  • A. Sas-Bojarska

  - Year 2018

  The aim of the paper is to present the problems connected with the location of big infrastructure objects; like bridges; in close neighbourhood to the small cities located in valuable environment and landscape; and the ways to minimize the potential threats. The case study of the small town Wyszogrod in central Poland will be presented to illustrate the values of the environment and landscape; which could have been easily destroyed...

• Measurement of luminance and color uniformity of displays using the large-format scanner

  Publication

  • A. Mazikowski

  - Year 2017

  Uniformity of display luminance and color is important for comfort and good perception of the information presented on the display. Although display technology has developed and improved a lot over the past years, different types of displays still present a challenge in selected applications, e.g. in medical use or in case of multi-screen installations. A simplified 9-point method of determining uniformity does not always produce...

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• Performance of DS-CDMA Radionavigation Receiver with Subsample Time Measurement Resolution in Various Environments

  Publication

  • J. Sadowski

  - Year 2015

  This paper presents results of investigation of position estimation performance in TDOA radionavigation system with receiver containing code tracking loop with subsample time measurement resolution. Position estimation accuracy was evaluated using real signals from CDMA base stations, recorded during measurement campaigns in various environments: on sea, flat terrain and hilly terrain.

• LOW COST MEASUREMENT MODULE FOR MATRIX OF AMPEROMETRIC GAS SENSOR

  Publication

  • G. Jasiński
  • P. A. Kościński
  • A. Strzelczyk
  • Ł. Woźniak
  • G. Lentka

  - Year 2015

  This paper describes an amperometric sensor module for gas concentration measurement. A module can be used for many types of electrochemical gas sensors without major hardware changes. Device is based on AVR ATmega8 microcontroller. As signal processing circuit a specialized integrated circuit LMP9l000 configurable via I2C interface is used. The concept of a measuring system composed of several modules dedicated for a gas sensors...

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• Low-power device simulator for micro-energy measurement methods testing

  Publication

  • D. Palmowski
  • G. Lentka
  • A. Hojka

  - Przegląd Elektrotechniczny - Year 2016

  The paper presents low-power device simulator designed for testing of micro-energy measurement methods. Such kind methods can be used for evaluation of power systems based on Energy Harvesting. The device allows to set the current consumption characteristic over the time, thus making possible playing the role of different types of low-power devices e.g. simulating sensor network node.

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• A Development of a Capacitive Voltage Divider for High Voltage Measurement as Part of a Combined Current and Voltage Sensor

  Publication

  • R. Hrbac
  • V. Kolar
  • M. Bartłomiejczyk
  • T. Mlcak
  • P. Orsag
  • J. Vanc

  - Elektronika Ir Elektrotechnika - Year 2020

  This article deals with the development of capacitive voltage divider for high voltage measurements and presents a method of analysis and optimization of its parameters. This divider is a part of a combined voltage and current sensor for measurements in high voltage power networks. The sensor allows continuous monitoring of the network distribution status and performs a quick diagnosis and location of possible network failures....

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• Measurement of idlers rotation speed in belt conveyors based on image data analysis for diagnostic purposes

  Publication

  • P. Dąbek
  • P. Krot
  • J. Wodecki
  • P. Zimroz
  • J. Szrek
  • R. Zimroz

  - Measurement - Year 2022

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• Comparison of the measurement techniques employed for evaluation of ambient air odour quality

  Publication

  • W. Wojnowski
  • T. Majchrzak
  • J. Gębicki
  • T. Dymerski
  • J. Namieśnik

  - Year 2016

  The paper presents the results of investigation on ambient air odour quality in a vicinity of the industrial sewage treatment plant being a part of the crude oil processing plant. The investigation was performed during spring-winter season using a prototype of electronic nose and the Nasal Ranger field olfactometers. The prototype was equipped with a set of six semiconductor sensors by FIGARO Co. and one PID-type sensor. The field...

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• The loop impedance measurement

  Open Research Data

  open access

  • A. Golijanek-Jędrzejczyk

  The loop impedance measurement

• Evaluation of high-frequency roughness measurement errors for composite and ceramic surfaces after machining

  Publication

  • P. Podulka
  • W. Macek
  • M. Szala
  • A. Kubit
  • K. C. Das
  • G. Królczyk

  - Journal of Manufacturing Processes - Year 2024

  Precise characterisation of surface topography is of the greatest importance since many factors directly affect the accuracy of the whole measurement process. In this paper, the variety of surface topographies from machined composite and ceramic workpieces was studied with a special emphasis on the measurement results. Surfaces were subjected to the ground diamond, honing and milling processes. Measurement results were analysed...

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• The prototype of a wireless measurement card

  Publication

  • W. Jesko
  • P. Kuwalek
  • P. Kuwałek

  - ITM Web of Conferences - Year 2019

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• Air Pollutant Emission Measurement

  Publication

  • N. Račić
  • B. Lalić
  • I. Komar
  • F. Vidović
  • L. Stazić

  - Pedagogika-Pedagogy - Year 2021

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• Spikes removal in surface measurement

  Publication

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

  - Journal of Physics: Conference Series - Year 2014

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• Strouhal Number Measurement for Novel Biomimetic Folding Fins Using an Image Processing Method

  Publication

  • P. Piskur

  - Journal of Marine Science and Engineering - Year 2022

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• Application of the Least Squares Method to the approximation of equally spaced samples in frequency measurement approach

  Publication

  • E. Pawłowski

  - Przegląd Elektrotechniczny - Year 2020

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• The critical rotational speed of circular saw: simple measurement method and its practical implementations.

  Publication

  • K. Orłowski
  • J. Sandak
  • C. Tanaka

  - JOURNAL OF WOOD SCIENCE - Year 2007

  Producenci pił tarczowych są zobligowani do podawania ich dopuszczalnych prędkości obrotowych. Jednakże, umieszczane przez nich prędkości na piłach są często bliskie prędkościom krytycznym lub je przewyższają. Przecinanie takimi narzędziami może być więc niebezpieczne dla obsługującego. Praca przedstawia prostą metodologię wyznaczania prędkości obrotowych krytycznych pił tarczowych. Badania były prowadzone z wykorzystaniem technik...

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• Measurement of dynamic pulsations in bulk solid during silo discharging using ECT method

  Publication

  • K. Grudzień
  • Z. Chaniecki
  • M. Niedostatkiewicz
  • A. Romanowski
  • D. Sankowski

  - ZESZYTY NAUKOWE POLITECHNIKI ŁÓDZKIEJ, SERIA: ELEKTRYKA - Year 2009

  W pracy przedstawiono wyniki pomiarów pulsacji materiału sypkiego pomieroznych z zastosowaniem metody pomiarowej ECT. Analizę dynamicznych zmian koncetracji przperowadzono dla podstawowych(surowych) danych pomiarowych oraz danych zrekonstruowanych

• Application of the short time Fourier transformation to the continuous frequency method of measurement of electrode impedance

  Publication

  • P. Ślepski

  - Physico-Chemical Mechanics of Materials - Year 2002

  Przedstawiona została nowa metoda pomiaru impedancji elektrodowej. Wykorzystuje ona jako pobudzenie niestacjonarny sygnał napięciowy, którego częstotliwość jest liniową funkcją czasu. Zastosowanie transformacji STFT do analizy napięciowego sygnału pobudzenia i odpowiedzi prądowej umożliwia wyznaczenie widma impedancyjnego. Dokładność otrzymywanych wartości impedancji uwarunkowana jest wielkością okna i zastosowanej funkcji analizującej.

• Dynamic unattended measurement based routing algorithm for diffServ architecture

  Publication

  • M. Czarkowski
  • S. Kaczmarek

  - Year 2010

  Dynamic routing is very important in terms of assuring QoS in today's packet networks especially for streaming and elastic services. Existing solutions dedicated to dynamic routing are often too complicated and seem to be not usable in real time traffic scenarios where transferred traffic may vary significantly. This was the main reason for research and new routing mechanism proposal which should apply to today's packet networks....

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• Transient States during Short-circuit in a Line Powered by UPS and its Impact on Earth Fault Loop Impedance Measurement and Power Quality

  Publication

  • J. Katarzyński
  • M. Olesz

  - Year 2020

  The short-circuit in a line powered by Uninterruptible Power Supply (UPS) during different UPS operation modes is presented in the article. The transient state condition related to the short-circuit in a line fed from double conversion On-line UPS is discussed in detail. The results of the measurements of earth fault loop impedance (FLI) in circuits powered by UPS with the instruments of various manufacturers are presented. The...

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• Measurement Science Review

  Journals

  ISSN: 1335-8871

• The concept of estimation of elevator shaft control measurement results in the local 3D coordinate system.

  Publication

  • D. Filipiak-Kowszyk
  • W. Gierski
  • W. Kamiński
  • K. Makowska-Jarosik

  - Year 2018

  Geodetic control measurements play an important part because they provide information about the current state of repair of the construction, which has a direct impact on the safety assessment of its exploitation. Authors in this paper have focused on control measurements of the elevator shaft. The article discusses the problem of determining the deviation of elevator shaft walls from the vertical plane in the local 3D coordinate...

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• Comparison of induction motor bearing diagnostic test results through vibration and stator current measurement

  Publication

  • T. Ciszewski
  • L. Swędrowski

  - Computer Applications in Electrical Engineering - Year 2013

  The paper discusses results of tests performed by authors, related to the angine bearings diagnostic using vibration and stator current measurements. The paper contains the description of an automatic measurement system, developed for measurement of those harmonics and processing that to obtain bearing diagnostic information. System was tested on objects with intentionally made defects in bearings, results of this test was also...

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

  Publication

  • A. Boryczko

  - Metrology and Measurement Systems - Year 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...

• Testing of Software for the Planning of a Linear Object GNSS Measurement Campaign under Simulated Conditions

  Publication

  • S. Figiel
  • C. Specht
  • M. Moszyński
  • A. Stateczny
  • M. Specht

  - ENERGIES - Year 2021

  The precision of a linear object measurement using satellite techniques is determined by the number and the relative position of the visible satellites by the receiver. The status of the visible constellation is described by DOP. The obtained geometric coefficient values are dependent on many variables. When determining these values, field obstacles at the receiver location and satellite positions changing with time must be taken...

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• Designing a magnetoacoustic emission measurement configuration for measurement of creep damage in power plant boiler tubes

  Publication

  • B. Augustyniak
  • M. Chmielewski
  • L. Piotrowski
  • J. M. Sablik

  - JOURNAL OF APPLIED PHYSICS - Year 2002

  Opisywane są własności skonstruowanego detektora emisji magneto-akustycznej (EMA) służącego dla pomiaru stopnia degradacji rurociągów w przemyśle energetycznym. Specjalna budowa biegunów magnesu umożliwia ich dopasowanie do zakrzywionych powierzchni. Układ pomiarowy pozwala na badanie natężenia EMA dla pola wzdłuż osi rury, a także w kierunku obwodowym. Wykazano, iż możliwa jest detekcja zmiany stopnia degradacji materiału na obwodzie...

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• Educational Measurement-Issues and Practice

  Journals

  ISSN: 0731-1745 , eISSN: 1745-3992

• Journal of Food Measurement and Characterization

  Journals

  ISSN: 1932-7587

• Mediterranean Journal of Measurement and Control

  Journals

  ISSN: 1743-9310

• IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE

  Journals

  ISSN: 1094-6969 , eISSN: 1941-0123

• Modelling, Measurement and Control C

  Journals

  ISSN: 1259-5977

• IET Science Measurement & Technology

  Journals

  ISSN: 1751-8822 , eISSN: 1751-8830

• Measurement-Interdisciplinary Research and Perspectives

  Journals

  ISSN: 1536-6367 , eISSN: 1536-6359

• Journal of Economic and Social Measurement

  Journals

  ISSN: 0747-9662

• Modelling, Measurement and Control B

  Journals

  ISSN: 1259-5969

• Measurement and Evaluation in Counseling and Development

  Journals

  ISSN: 0748-1756 , eISSN: 1947-6302

• STUDY OF ARRAY OF MEMS INERTIAL MEASUREMENT UNITS UNDER QUASI-STATIONARY AND DYNAMIC CONDITIONS

  Publication

  • J. Demkowicz
  • K. Bikonis

  - Polish Maritime Research - Year 2021

  A measurement system includes all components in a chain of hardware and software that leads from a measured variable to processed data. In that context, the type and quality of the sensors or measuring devices are critical to any measurement system. MEMS/IMU sensors lag behind leading technologies in this respect, but the MEMS/IMU performance rapidly changes while is relatively inexpensive. For this reason, the paper proposes...

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• Potentiometric Solid-Contact Multisensor System for Simultaneous Measurement of Several Ions

  Publication

  • A. Jasiński
  • M. Urbanowicz
  • M. Guziński
  • M. Bocheńska
  • M. Guzinski

  - ELECTROANALYSIS - Year 2015

  The design and performance of potentiometric multisensor system made in solid-contact technology is described. Both, the measuring electrodes as well as the reference electrode are in a compact cell. The system allows for simultaneous measurement of various ions. The characteristics of the electrodes for Na+, K+ and Ca2+ ions were determined using the designed system and compared with ISEs of the same membrane composition in classical...

• Suppression of distortions in signals received from Doppler sensor for vehicle speed measurement

  Publication

  • G. Szwoch

  - Year 2018

  Doppler sensors are commonly used for movement detection and speed measurement. However, electromagnetic interference and imperfections in sensor construction result in degradation of the signal to noise ratio. As a result, detection of signals reflected from moving objects becomes problematic. The paper proposes an algorithm for reduction of distortions and noise in the signal received from a simple, dual-channel type of a Doppler...

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• PHYSIOLOGICAL MEASUREMENT

  Journals

  ISSN: 0967-3334 , eISSN: 1361-6579

• Maciej Wróbel dr inż.

  People

  Department of Metrology and Optoelectronics

  Received PhD from Gdańsk University of Technology in 2019. Research interests involve non-invasive applications of Raman spectroscopy for tissue analysis, specifically blood parameters measurements. Tissue mimicking phantoms, measurement of optical properties (scattering, absorption), as well as other optical sensing methods. Raman spectroscopy and surface-enhanced Raman spectroscopy (SERS) utilized for measurements of biological...

• Measurement and Analysis of the Radio Wave Polarisation in Off-Body Communications in Indoor Environment

  Publication

  • S. J. Ambroziak
  • R. Katulski
  • L. M. Correia
  • M. Maćkowiak

  - Year 2014

  The paper describes an analysis of the radio wave polarisation in off-body communications in indoor environment. The measurement stand for polarisation measurements has been shortly described. Five investigated scenarios with different body postures and different antenna placements have been characterize. The vertical and horizontal components of received radio signal have been analysed. The measure used in analysis is a ratio...

• THE APPLICATION OF BALANCED SCORECARD METHOD FOR THE SELECTION OF FACTORS USED IN THE EFFICIENCY MEASUREMENT OF PUBLIC HOSPITALS IN POLAND

  Publication

  • K. Miszczynska

  - Year 2018

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• Software-based method of increasing the effective resolution of a measurement chain for a transducer with a pulse frequency output

  Publication

  • E. Pawlowski

  - Year 2017

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• Methods of measurement signal acquisition from the rotational flow meter for frequency analysis

  Publication

  • D. Świsulski
  • R. Hanus
  • M. Zych
  • L. Petryka

  - EPJ Web of Conferences - Year 2017

  One of the simplest and commonly used instruments for measuring the flow of homogeneous substances is the rotational flow meter. The main part of such a device is a rotor (vane or screw) rotating at a speed which is the function of the fluid or gas flow rate. A pulse signal with a frequency proportional to the speed of the rotor is obtained at the sensor output. For measurements in dynamic conditions, a variable interval between...

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