Search for dissertations about: "harvesting"

Showing result 21 - 25 of 379 swedish dissertations containing the word harvesting.

  2. 21. Conjoined piezoelectric harvesters and carbon supercapacitors for powering intelligent wireless sensors

    Author : Henrik Staaf; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electrode material; coupled resonators; selftuning; Kinetic harvesting; Intelligent wireless sensor; piezoelectric energy harvesting; Supercapacitor; carbon nanomaterials;

    Abstract : To achieve total freedom of location for intelligent wireless sensors (IWS), these need to be autonomous. To achive this today there is a need of broadband piezoelectric energy harvesting and a long-lasting energy. The Harvester need to be able to provide sufficient amount of energy for the intelligent wireless sensor to perform its task. READ MORE

  4. 22. Rotational Electromagnetic Energy Harvesting Through Variable Reluctance

    Author : Ye Xu; Sebastian Bader; Bengt Oelmann; Carlo Trigona; Mittuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Rotating components are found in a majority of modern industrial applications.As key parts for machinery operations, rotating components need tobe monitored in order to detect and prevent machine failures. READ MORE

  5. 23. Energy Harvesting for Smart-Internet-Connected Bearings

    Author : Fredrik Häggström; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Electronics; Industriell elektronik;

    Abstract : With the number of interconnected devices, many of which being wireless, exceeding the human population, there is a need to power resource-constrained devices through means other than disposable batteries. Harvesting ambient energy from the vicinity of the device is one solution. READ MORE

  6. 24. Power Estimation for Indoor Light Energy Harvesting

    Author : Xinyu Ma; Bengt Oelmann; Sebastian Bader; Alex Weddell; Mittuniversitetet; []
    Keywords : ;

    Abstract : The growing popularity of indoor light energy harvesting for wireless sensor systems and low-power electronics has created a demand for systematic power estimation methods for different lighting conditions. Although existing research has recognized the critical role played by the spectral information on the output power of a photovoltaic cell, power estimation methods have rarely considered it. READ MORE

  7. 25. Rain Water Harvesting (RWH) North of Iraq

    Author : Saleh Zakaria; Ahmed Hachum; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Abstract : Rainwater harvesting is one of the methods that can ensure availability of water for winter crop in Iraq. Using this technique the excess rainwater (runoff) is stored in reservoirs of dams of different sizes. The water from these reservoirs can be used later when required to satisfy the crops requirements. READ MORE