Sökning: "gas sensors"

Visar resultat 16 - 20 av 108 uppsatser innehållade orden gas sensors.

  1. 16. Graffiti Detection using a variable temperature MOx sensor and Machine Learning

    Master-uppsats, Lunds universitet/Matematisk statistik

    Författare :Mikael Kristensson; Christian Clemedtson; [2021]
    Nyckelord :MOX sensor; variable temperature; machine learning; graffiti; spray paint; Support Vector Machine; k-Nearest Neighbour; neural network; Mathematics and Statistics;

    Sammanfattning : MOx sensors are widely used for sensing gases. In this thesis a variable temperature MOx sensor was used to detect graffiti spray paint and differentiate it from other substances using the sensors sensitivity to different gases at different temperatures using machine learning. LÄS MER

  3. 17. Comparing radar satellites. Use of Sentinel-1 leads to an increase in oil spill alerts in Norwegian waters

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Ove Njøten; [2021]
    Nyckelord :Geography; GIS; Satellite; Radar; Oil spill; Earth and Environmental Sciences;

    Sammanfattning : Radar’s ability to detect oil spills through clouds, fog, and darkness is a significant advantage. Oil spill alert services using radar satellites have been in use in Norway for more than 25 years. After introducing two radar satellites Sentinel-1A and 1B in 2015-2016, the number of oil spill alerts has increased by 250% in Norwegian waters. LÄS MER

  4. 18. System för optisk mätning av linjeprofil

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för informationsteknologi

    Författare :Victor Svahn; Andreas Johansson; [2021]
    Nyckelord :;

    Sammanfattning : Today’s industry is moving towards a fourth revolution based on digitilizing technologies to reduce errors and streamline processes. When manufacturing hydraulicsand other pressurized systems, couplings are pressed onto pipes and hoses that mustbe able to maintain an expected pressure. LÄS MER

  5. 19. Quantifying nitrogen oxides and ammonia via frequency modulation in gas sensors

    Master-uppsats, Linköpings universitet/Statistik och maskininlärning

    Författare :Marcos Freitas Mourao dos Santos; [2021]
    Nyckelord :Nitrogen oxides; nox; ammonia; sic-fet; PLSR; quantification;

    Sammanfattning : The use of Silicon Carbide Field Effect Transistor (SiC-FET) sensors in cyclic operation is a proven way to quantify different gases. The standard workflow involves extracting shape-defining features such as averages and slopes of the sensor signal. LÄS MER

  7. 20. Anomaly Detection on Gas Turbine Time-series’ Data Using Deep LSTM-Autoencoder

    Master-uppsats, Umeå universitet/Institutionen för datavetenskap

    Författare :Marzieh Farahani; [2021]
    Nyckelord :;

    Sammanfattning : Anomaly detection with the aim of identifying outliers plays a very important role in various applications (e.g., online spam, manufacturing, finance etc.). LÄS MER