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    Wyświetlanie 1-7 z 7
    Tytuł:
    Influence of the disturbance created in the measuring channel on the readings of the hot-wire anemometric sensor
    Autorzy:
    Nitkiewicz, Szymon
    Al-Jumaily, Ahmed
    Powiązania:
    https://bibliotekanauki.pl/articles/13800134.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    flow
    numerical modeling
    fluid mechanics
    przepływ
    modelowanie numeryczne
    mechanika płynów
    Opis:
    The research presents issues related to fluid mechanics, thermodynamics, and statistics. In the first sections, the authors review methods and parameters of fluid measurements. The work mainly emphasizes measurements concerning the parameters of air flows during human breathing. In the following section, the test bench for the analysis is described, and the methodology of data acquisition is described. Finally, the authors present a numerical model of the measurement channel and its calculations compared to measurements from an actual test stand. The data acquirement was performed with LabVIEW, modeling with COMSOL Multiphysics®, and calculations with MATLAB software.
    Źródło:
    Diagnostyka; 2023, 24, 3; art. no. 2023315
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of forces in a racing simulator based on a Stewart platform
    Autorzy:
    Tytuła, Jakub
    Zaremba, Arnold
    Nitkiewicz, Szymon
    Powiązania:
    https://bibliotekanauki.pl/articles/11025753.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    Stewart platform
    force
    race simulator
    platforma Stewarta
    siła
    symulator wyścigu
    Opis:
    This paper presents how forces are perceived in a racing simulator based on a Stewart Platform. By retrieving calculated forces in a racing game by its physics engine and comparing them to real-life measurements during the platforms motions it is possible to evaluate the platforms immersiveness. Virtual values extracted from the game engine are deemed satisfactory to their real life counterparts and serve as a baseline. In order to evaluate forces created by the simulator, a lap around a virtual test track is recorded and played back while an accelerometer and gyroscope record its movements. Overall, accelerations recorded in the direction of X and Y axis along with angular speed of rotation around the aforementioned those axis. To accurately comparing every derived force, the recorded virtual lap is divided into sections representing the five most common manoeuvres during racing. These comparisons serve as an evaluation method to measure the immersiveness of the simulator.
    Źródło:
    Diagnostyka; 2023, 24, 3; art. no. 2023405
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of the possibilities of using a virtual reality system in fitness training
    Autorzy:
    Zaremba, Arnold
    Tytuła, Jakub
    Nitkiewicz, Szymon
    Powiązania:
    https://bibliotekanauki.pl/articles/22615528.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie
    Tematy:
    virtual reality
    intermittent training
    continuous training
    shooting range
    Opis:
    Virtual Reality (VR) is an amazing tool in the field of interaction, simulation, and entertainment between humans and computers. This technology is often used for recreational purposes in combination with physical activities. The main objective of this study was to compare intermittent training with continuous training on the shooting range. The first part of the article presents the essence of virtual reality and the possibilities that arise from its use. Then the created virtual environment, in which the shooter is located, and the way the study has been carried out are presented. The attempts of the participants were shown and evaluated. The realistic physics of movement and environment interactions have been designed into this map. The main aspects of the modelled and programmed shooting range were presented and their use has been described. The following section describes the research process and the analysis of the results of the test carried out on eight participants who had not previously been exposed to virtual reality. The test subjects were divided into two groups, one intermittent training and the other continuous training. The results of these groups were compared to assess which forms of training in a virtual reality environment were more beneficial.
    Źródło:
    Technical Sciences / University of Warmia and Mazury in Olsztyn; 2023, 26(1); 97--110
    1505-4675
    2083-4527
    Pojawia się w:
    Technical Sciences / University of Warmia and Mazury in Olsztyn
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The study of Arduino UNO feasibility for DAQ purposes
    Studium przydatności platformy Arduino dla celów akwizycji danych
    Autorzy:
    Barański, Robert
    Galewski, Marek A.
    Nitkiewicz, Szymon
    Powiązania:
    https://bibliotekanauki.pl/articles/329446.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    microcontroller
    Arduino
    ATmega
    monitoring
    data acquisition
    signal analysis
    mikrokontroler
    pozyskiwanie danych
    analiza sygnału
    Opis:
    Using microcontroller systems becomes a routine in various measurement and control tasks. Their wide availability together with a huge potential of extending their functionality by additional modules allows developing advanced measuring and monitoring systems by non-specialists. However, using popular example codes often leads the user to pass over or not to be aware of the limitations of the system and drawing too farreaching conclusions on the basis of incorrectly performed measurements This paper deals with the problem of choosing the right method for performing measurements using an acquisition system based on the budget Arduino UNO solution. The main assumption was to use the standard, widely available Arduino libraries. The work focuses on the scenario when data should be subject to time and frequency analysis in the later processing. The operating limits of the device were also determined depending on the data transmission method used.
    Pomiary wielkości fizycznych z wykorzystaniem układów opartych na mikrokontrolerach stają się standardem. Ich szeroka dostępność wraz z modułami rozszerzającymi ich funkcjonalność daje możliwość budowy zaawansowanych układów pomiarowych i monitorujących przez osoby nie będące specjalistami. Szereg dostępnych przykładów umożliwia szybką budowę systemu pomiarowego. Niejednokrotnie jednak powoduje, iż użytkownik jak i konstruktor nie zdają sobie sprawy z ograniczeń układu i na podstawie pomiarów wyciągają zbyt daleko idące wnioski. Niniejsza praca dotyka problematyki właściwej metody pozyskiwania danych pomiarowych. Na przykładach popularnie wykorzystywanych podejść do akwizycji danych, zobrazowano nie widoczne w pierwszym momencie skutki. W pracy skoncentrowano się na sytuacji, gdy w późniejszej obróbce dane mają podlegać analizom czasowym lub częstotliwościowym. Całość poparto przykładami bazując na układzie Arduino UNO. Założeniem autorów było wykorzystanie standardowo dostępnych bibliotek.
    Źródło:
    Diagnostyka; 2019, 20, 2; 33-48
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating transmitters for quantifying respiratory airflow in the breathing mechanism
    Autorzy:
    Barański, Robert
    Nitkiewicz, Szymon
    Zając, Andrzej
    Kukwa, Andrzej
    Stano, Łukasz
    Szawarc, Sebastian
    Powiązania:
    https://bibliotekanauki.pl/articles/27313802.pdf
    Data publikacji:
    2024
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    signal analysis
    flow sensors
    breathing
    measurements
    Opis:
    Techniques for measuring fluid flow have been known since the 19th century. The first solutions based on the use of pressure only allowed relatively slow changes to be observed. It was not until measurement techniques based on the use of electronic components and the phenomenon of thermo-transfer, combined with a method enabling fast signal recording (A/C converters), that it became possible to analyse the flow of a medium (e.g. air) in detail. Although flow sensors based on measuring changes in resistance have been known for many years, new solutions are still being developed. This paper presents the results of a study using three sensors. Their response to laminar airflow was investigated for different velocities (1.2 - 2.6 m/s). The flow forcing was implemented using an axial fan and the signals were measured simultaneously for all the sensors tested. The results showed which sensors had the smallest dispersion of results (PAN and WA sensors) and confirmed that for the investigated velocity variations (0.14 m/s pitch) the results are unambiguously interpretable.. It should be noted that sensor research is related to the need to develop a device to measure flow as accurately as possible, while at the same time ensuring the comfort of the test person during the measurements. Therefore, the search was for a sensor that is small in size and at the same time resistant to damage and operation in a harsh humid environment.
    Źródło:
    Diagnostyka; 2024, 25, 1; art. no. 2024105
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anatomical and functional assessment of patency of the upper respiratory tract in selected respiratory disorders - Part 2
    Autorzy:
    Zając, Andrzej
    Kukwa, Andrzej
    Barański, Robert
    Nitkiewicz, Szymon
    Zomkowska, Edyta
    Rybak, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/2173877.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optical diagnostic in otolaryngology
    upper respiratory tract diagnostics
    otolaryngology
    spirometer
    Fourier transform
    wavelet transform
    quantitative parameters of the respiratory cycle
    Opis:
    This article presents selected physical diagnostic methods used in otorhinolaryngology and results of their application. In addition to the applications of methods using the capabilities of selective sensors, selected methods of hybrid diagnostics were also presented - for assessment of parameters of respiratory processes, with polysomnography as an example of using both typical diagnostic methods dedicated to otolaryngology, as well as standard EEG and ECG methods. It has been shown that in some special cases of respiratory disorders, measurements of the air flow in the respiratory tract can be supplemented with pressure measurements in selected positions within the airways. The presented optical methods and diagnostic systems are very often used in the diagnosis of diseases not specific for otolaryngology occurring in the area of the head and neck. The presented material is the second part of the study discussing both standard and widely used diagnostic methods. All presented methods are dedicated to otolaryngology. This text is a continuation of the material published in No 4 of 2021 [1].
    Źródło:
    Metrology and Measurement Systems; 2022, 29, 3; 429--454
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anatomical and functional assessment of patency of the upper respiratory tract in selected respiratory disorders - Part 1
    Autorzy:
    Kukwa, Andrzej
    Zając, Andrzej
    Barański, Robert
    Nitkiewicz, Szymon
    Kukwa, Wojciech
    Zomkowska, Edyta
    Rybak, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/2052154.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    optical diagnostic in otolaryngology
    upper respiratory tract diagnostics
    otolaryngology
    spirometer
    Fourier transform
    wavelet transform
    quantitative parameters of the respiratory cycle
    Opis:
    The rapidly developing measurement techniques and emerging new physical methods are frequently used in otolaryngological diagnostics. A wide range of applied diagnostic methods constituted the basis for the review study aimed at presenting selected modern diagnostic methods and achieved diagnostic results to a wider group of users. In this part, the methods based on measuring the respiratory parameters of patients were analysed. Respiration is the most important and necessary action to support life and its effective duration. It is an actual gas exchange in the respiratory system consisting of removing CO2 and supplying O2. Gas exchange occurs in the alveoli, and an efficient respiratory tract allows for effective ventilation. The disruption in the work of the respiratory system leads to measurable disturbances in blood saturation and, consequently, hypoxia. Frequent, even short-term, recurrent hypoxia in any part of the body leads to multiple complications. This process is largely related to its duration and the processes that accompany it. The causes of hypoxia resulting from impaired patency of the respiratory tract and/or the absence of neuronal respiratory drive can be divided into the following groups depending on the cause: peripheral, central and/or of mixed origin. Causes of the peripheral form of these disorders are largely due to the impaired patency of the upper and/or lower respiratory tract. Therefore, early diagnosis and location of these disorders can be considered reversible and not a cause of complications. Slow, gradually increasing obstruction of the upper respiratory tract (URT) is not noticeable and becomes a slow killer. Hypoxic individuals in a large percentage of cases have a shorter life expectancy and, above all, deal with the consequences of hypoxia much sooner.
    Źródło:
    Metrology and Measurement Systems; 2021, 28, 4; 813-836
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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