Sökning: "Lysdiod"

Visar resultat 1 - 5 av 13 uppsatser innehållade ordet Lysdiod.

  1. 1. Construction of a scanning confocal microscope for Quantum Dot mapping at telecom wavelength

    Master-uppsats, KTH/Tillämpad fysik

    Författare :Alexandros Bampis; [2023]
    Nyckelord :Nanophotonics; Quantum Dot Positioning; Photoluminescence Mapping; Scanning Microscope; Nanofotonik; Positionering av kvantprickar; Fotoluminescenskartläggning; Skanningsmikroskop;

    Sammanfattning : Future commercial applications making use of non-classical light sources require bright quantum emitters. Such emitters can be achieved by embedding self-assembled, optically active semiconductor quantum dots (QDs) in centered photonic structures. LÄS MER

  3. 2. Optimization of Light Conditions in a Greenhouse Environment : Reducing energy consumption and increasing yield using mechatronics

    Magister-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Elias Mahjoub; [2022]
    Nyckelord :Indoor growing; Light-emitting diode; Mechatronics; Sustainability; Vertical Farming.; Inomhusodling; Lysdiod; Mekatronik; Hållbarhet; Vertikalt Jordbruk;

    Sammanfattning : The present thesis explores the possibilities of reducing electrical energy consumption in a greenhouse environment through the construction a demonstrator system. The demonstrator system is imagined to be used in a vertical farming setup and is fully automated. The system achieves two main actions. LÄS MER

  4. 3. Pre-study of optical LED units for shunting signals

    M1-uppsats, KTH/Hälsoinformatik och logistik

    Författare :Tobias Adolfsson; Axel Dellenby; [2021]
    Nyckelord :LED - Light Emitting Diode; Booster Converter; MLCC - Multi-layer capacitor; ESR - Equivalent Serie Resistance; OU - Optical Unit; Reactive compensation; LED - lysdiod; step-up omvandlare; MLCC - flerskiktskeramisk kondensator; ESR - ekvivalent serie motstånd; OU - optiskt enhet; reaktiv kompensering;

    Sammanfattning : Alstom wanted to investigate the possibility of adapting its light emitting diode (LED) technology for shunting signals in train traffic. The LED technology uses 50V, but Alstom wants to adapt it for 12V. The LED technology is energy efficient but needs to be adapted for existing signal interlocking by drawing a higher current. LÄS MER

  5. 4. Achieving Optimal Alignments of IR Source and Detector in Waveguide Based Gas Sensor

    Uppsats för yrkesexamina på grundnivå, KTH/Medicinteknik och hälsosystem

    Författare :Sefik Güler; Agbai Randolph Agwu; [2020]
    Nyckelord :Non-dispersive infrared technology; microelectromechanical systems; infrared light; electromagnetic spectrum; gas sensor; light emitting diode; photodiode detector; Icke-dispersiv infraröd teknologi; mikroelektromekaniska system; infrarött ljus; elektromagnetiskt spektrum; gassensor; lysdiod; fotodioddetektor;

    Sammanfattning : I takt med att tekniken för mikroelektromekaniska system utvecklas uppkommer det nya områden för tillämpning. Ett område är inom gassensorer där icke-dispersiv infraröd strålning används genom att mäta absorptionen hos olika gaser för att bestämma mängden av en specifik gas i luften. LÄS MER

  7. 5. Best PAL : Ball Exercise Sound Tracking PAL

    Kandidat-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Axel Sundkvist; Joakim Hellberg; [2018]
    Nyckelord :mechatronics; microcontroller; sound source localization; wireless communication; DC motor controlling; mekatronik; mikrokontroller; ljudlokalisering; trådlös kommunikation; likströmsmotorstyrning;

    Sammanfattning : The PAL (Practise and Learn) Original is a ball boardconsisting of three wooden boards placed in a triangle, developedto practise football players’ passing ability and firsttouch. The former Swedish international footballer JessicaLandstr¨om observed that these ball boards can, if they areimproved, help footballers to develop even more skills whilepracticing alone. LÄS MER