Sökning: "Large FFT"

Visar resultat 1 - 5 av 25 uppsatser innehållade orden Large FFT.

  1. 1. A Travelling Wave Slot Array based on a Double-Layer Lens for 77 GHz Automotive Radar

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Ashray Ugle; [2023]
    Nyckelord :Automotive radar; Double-layer lens; Gap waveguide technology; Waveguide slot; Antenna array; Lens-beamforming.; Bilradar; Dubbelskiktslins; Gap-vågledarteknik; Waveguide-kortplats; Antennuppsättning; Lens-beamforming.;

    Sammanfattning : Automotive radars have gained considerable interest in recent years for applications of road safety for vulnerable road users. The use of multipleinput and multiple-output (MIMO) technology in automotive radar has helped in realising a virtual aperture greater than the physical aperture of the antenna which has reduced the size of the overall radar module. LÄS MER

  3. 2. Audio Thermometer : Determining Water Temperature By Its Sound

    Kandidat-uppsats,

    Författare :Hannes Rohlin; Jesper Thulin; [2022]
    Nyckelord :Sound; Water; Temperature; Machine Learning; Thermometer; Audio; FFT; Ljudtermometer; Ljud; Vatten; Temperatur; Maskininlärning; Termometer; Ljud; FFT;

    Sammanfattning : In this project, the temperature of water was to be determined by recording the sound made whilst being poured into a container. The goal was set to achieve an accuracy of at least 80% of measurements should be predicted within ±10°C and a negligible amount outside ±20°C. LÄS MER

  4. 3. Characterizing coil windings noise due to compressive fault currents : A study to determine if there is a characteristic noise from transformer windings due to fault currents

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Simon Lundgren; [2022]
    Nyckelord :Transformer windings; short circuit forces; current pulses; microphone; Comsol Multiphysics; FFT; Transformator lindningar; strömpulser; mikrofon; kortslutingskrafter; Comsol Multiphysics; FFT;

    Sammanfattning : Transformers are essential for modern power distribution system. They are efficient and enable the voltages to be transformed up for transportation of electricity and back down for consumer use. The reliability of the transformer is affected by faults and fatigue of the copper. LÄS MER

  5. 4. A Graphical User Interface for IR-image-based Process Analysis : A tool for assessing root causes in paperboard variability

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Sabina Westergren Ahlin; Agnes Höglund; [2022]
    Nyckelord :paperboard; variability; FFT; Fast Fourier Transform; Fourier transform; app; application; GUI; Graphical User Interface;

    Sammanfattning : Paperboard is produced in a large and complex process where many parameters can affect its quality. The common methods of analysing paperboard quality are through traversing point-like sensors that only measure a very small fraction of the produced paperboard. LÄS MER

  7. 5. Evaluation of sensor techniques for detection of contaminants in greywater from showers

    Master-uppsats, Lunds universitet/Avdelningen för Biomedicinsk teknik

    Författare :Andreas Bengtsson; Kalle Andersson; [2020]
    Nyckelord :Greywater; Ultrasound; IR; Impedance; Detection; Shower; Technology and Engineering;

    Sammanfattning : This thesis has been made in collaboration with the company Orbital Systems. The aim has been to optimize their product the Orbital shower, which is a circulating shower system. The work evaluates different sensor techniques suitable for detection of contaminants in greywater. LÄS MER