Sökning: "piezoelectric energy harvesting"
Visar resultat 1 - 5 av 12 avhandlingar innehållade orden piezoelectric energy harvesting.
1. Energy Harvesting and Energy Storage for Wireless and Less-Wired Sensors in Harsh Environments
Sammanfattning : Engineering requires sensors to control and understand the environment. This is particularly important in harsh environments. The drawbacks, especially in gas turbines is the complexity of installing a wired sensor and the weight of the wires. This makes wireless sensors attractive. LÄS MER
2. Conjoined piezoelectric harvesters and carbon supercapacitors for powering intelligent wireless sensors
Sammanfattning : 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. LÄS MER
3. Vibrational energy harvesting for sensors in vehicles
Sammanfattning : The miniaturization of semiconductor technology and reduction in power requirements have begun to enable wireless self-sufficient devices, powered by ambient energy. To date the primary application lies in generating and transmitting sensory data. LÄS MER
4. On-chip electrochemical capacitors and piezoelectric energy harvesters for self-powering sensor nodes
Sammanfattning : On-chip sensing and communications in the Internet of things platform have benefited from the miniaturization of faster and low power complementary-metal-oxide semiconductor (CMOS) microelectronics. Micro-electromechanical systems technology (MEMS) and development of novel nanomaterials have further improved the performance of sensors and transducers while also demonstrating reduction in size and power consumption. LÄS MER
5. Energy Harvesting for Wireless and Less-Wired Sensors in Gas Turbines
Sammanfattning : Four types of energy harvesters aimed for gas turbine applications were developed during this thesis. The unique gas turbine environment shaped the design- and material choices. A semiconductor thermoelectric harvester was built for a location in the gas turbine with active cooling at 600°C, with 800°C wall temperature. LÄS MER