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    Wyświetlanie 1-4 z 4
    Tytuł:
    The system of MEMS sensors data streaming and signal quality analysis
    Autorzy:
    Fabiański, B.
    Nowopolski, K.
    Wicher, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/97285.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    MEMS technology
    accelerometers
    data streaming
    digital signal processing
    data acquisition
    STM32L microcontrollers
    Opis:
    In the article, a dedicated testing environment for MEMS sensors is presented. The system serve real–time measurements from several, different interfaced sensors, what gives opportunity to collect the data and – furthermore – its off–line analysis. To complete the main challenge what is MEMS ICs integration in one platform, a special hardware layer is applied together with operational algorithms. Two low–level boards are connected to the embedded server by RS–485 lines. This data server translates RS–485 signals and communicates with dedicated PC program by an Ethernet interface. Such a solution made possible to parallel streaming, archive, and analyze of data in a convenient way. The architecture and operational algorithms of individual components, such as complex synchronization methods in the data streaming process is described. Proper system design is verified by presenting selected signal waveforms grabbed in an experimental tests. In the end introduced two signal quality indicators resulting in comparison of different MEMS ICs. Summary table of computed indicators is shown with its analysis.
    Źródło:
    Computer Applications in Electrical Engineering; 2016, 14; 328-339
    1508-4248
    Pojawia się w:
    Computer Applications in Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The system of streaming and analysis of signals from MEMS accelerometers
    Autorzy:
    Fabiański, B.
    Nowopolski, K.
    Wicher, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/377908.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    MEMS technology
    gravity sensors
    data streaming
    digital signal processing
    data acquisition
    STM32L microcontrollers
    Opis:
    In the article, a dedicated testing environment for MEMS acceleration sensors is shown. The system is able to collect data from multiple devices with different physical interfaces, send them through parallel streaming, archive, and analyze it. The architecture and operational algorithms of individual components, such as complex synchronization methods in the data streaming process is described. This data streaming is finally realized by Ethernet interface which becomes a bridge between the PC system running the dedicated application and the sensor board. In the last section of the article, quality indicators of acceleration sensors signals are presented. These indicators indicate primarily a useful signal to noise ratio with respect to the measurement resolution.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2016, 87; 301-312
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contribution to the Assessment of the Data Acquisition Effectiveness in the Aspect of Gas Porosity Defects Prediction in Ductile Cast Iron Castings
    Autorzy:
    Ignaszak, Z.
    Sika, R.
    Rogalewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/381804.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry processes
    information technology
    gas porosity
    data acquisition
    procesy odlewnicze
    technologie informatyczne
    porowatość gazowa
    akwizycja danych
    Opis:
    The article presents an example of analysis of the influence of selected parameters deriving from data acquisition in foundries on the occurrence of Gas porosity defects (detected by Visual testing) in castings of ductile cast iron. The possibilities as well as related effectiveness of prediction of this kind of defects were assessed. The need to rationally limit the number of possible parameters affecting this kind of porosity was indicated. Authors also benefited from expert group's expertise in evaluating possible causes associated with the creation of the aforementioned defect. A ranking of these parameters was created and their impact on the occurrence of the defect was determined. The classic statistical tools were used. The possibility of unexpected links between parameters in case of uncritical use of these typical statistical tools was indicated. It was emphasized also that the acquisition realized in production conditions must be subject to a specific procedure ordering chronology and frequency of data measurements as well improving the casting quality control. Failure to meet these conditions will significantly affect the difficulties in implementing and correcting analysis results, from which INput/OUTput data is expected to be the basis for modelling for quality control.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 35-40
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Specificity of SPC procedures application in foundry in aspect of data acquisition and data exploration
    Autorzy:
    Ignaszak, Z.
    Sika, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/380308.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    technologia informatyczna
    przemysł odlewniczy
    statystyczne sterowanie procesem
    karta kontrolna Shewharta
    akwizycja danych
    pozyskiwanie danych
    information technology
    foundry industry
    statistical process control
    shewhart control charts
    data acquisition
    data mining
    Opis:
    The paper presents an analysis of SPC (Statistical Process Control) procedures usability in foundry engineering. The authors pay particular attention to the processes complexity and necessity of correct preparation of data acquisition procedures. Integration of SPC systems with existing IT solutions in area of aiding and assistance during the manufacturing process is important. For each particular foundry, methodology of selective SPC application needs to prepare for supervision and control of stability of manufacturing conditions, regarding specificity of data in particular 'branches' of foundry production (Sands, Pouring, Metallurgy, Quality).
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 4; 65-70
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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