Sökning: "Trådlösa sensornätverk"

Visar resultat 16 - 20 av 33 uppsatser innehållade orden Trådlösa sensornätverk.

  1. 16. Wireless Sensor-based Agricultural Monitoring System

    Master-uppsats, KTH/Radio Systems Laboratory (RS Lab)

    Författare :Alexandros Zografos; [2014]
    Nyckelord :IEEE 802.15.4; precision agriculture; wireless sensor networks; ZigBee; IEEE 802.15.4; precisionsjordbruk; trådlösa sensornätverk; ZigBee;

    Sammanfattning : Today energy resources are becoming scarcer and therefore more valuable. In conjunction with the population growth over last century, the need for finding new, more efficient, and sustainable methods of agricultural cultivation and food production has become more critical. LÄS MER

  3. 17. Synchronous sleep in a wireless mesh network : Using synchronous sleep schedule, in a wireless sensor network for indoor climate control, to save power enabling battery powered network

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Fredrik Isaksson; [2014]
    Nyckelord :;

    Sammanfattning : För att styra inomhusklimat behövs det ett styrsystem med återkoppling. Det finns flera olika sätt att återkoppla, men en av möjligheterna är att använda ett trådlöst nätverk med sensorer. I trådlösa sensornätverk vill man alltid spara energi för att få längre batteritid. Det finns flera olika tekniker för att uppnå det. LÄS MER

  4. 18. System design choices in smartautonomous networked irrigation systems

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Kim Öberg; Johanna Simonsson; [2014]
    Nyckelord :;

    Sammanfattning : Wireless Sensor Networks are often deployed in great numbers spanning large, sometimes hard to reach and hostile, areas with the aim of monitoring environmental conditions through the use of different sensors. Due to decreasing costs of ownership (e.g. LÄS MER

  5. 19. Wireless sensor networks in building automation systems

    Uppsats för yrkesexamina på avancerad nivå, KTH/Skolan för informations- och kommunikationsteknik (ICT)

    Författare :Erik Pramsten; Daniel Roberthson; [2014]
    Nyckelord :;

    Sammanfattning : Tiny devices communicating wirelessly, also called wireless sensor networks, have developed rapidly the last few years. As the devices have been more energy efficient and more reliable new application areas have become interesting, one of them is building automation systems. LÄS MER

  7. 20. Energy harvesting power supply for wireless sensor networks : Investigation of piezo- and thermoelectric micro generators

    Kandidat-uppsats, Institutionen för teknikvetenskaper

    Författare :Nils Edvinsson; [2013]
    Nyckelord :energy harvesting piezo wireless sensor networks duty cycling UPWIS Seebeck Peltier piezoelectric thermoelectric;

    Sammanfattning : Computers and their constituent electronics continue to shrink. The same amount of work can be done with increasingly smaller and cheaper components that need less power to function than before. In wireless sensor networks, the energy needed by one sensor node borders the amount that is already present in its immediate surroundings. LÄS MER