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Energy Harvesting Power Supply for MEMS Applications
Smilek, Jan ; Leuchter, Jan (oponent) ; Ondrůšek, Čestmír (oponent) ; Hadaš, Zdeněk (vedoucí práce)
This thesis deals with the development of an independent power source for modern low-power electronic applications. Since the traditional approach of powering small applications by means of primary or secondary batteries lowers the user comfort of using such a device due to the necessary periodical maintenance, the novel power source is using the energy harvesting approach. This approach means that the energy is scavenged from the ambience of the powered application and converted into electricity in order to satisfy the power requirements of the newest MEMS electrical devices. The target applications for the new energy harvesting device are seen in wearable and biomedical electronic devices. That places challenging requirements on the energy harvester, as it has to harvest sufficient energy from the ambience of human body, while fulfilling practical size and weight constraints. After the preliminary requirements setting and analyses of possible sources of energy a kinetic energy harvesting principle is selected to be employed. A series of measurements is then conducted to obtain and generalize the kinetic energy levels available in the human body during various activities. A novel design of kinetic energy harvester is then introduced and developed into the form of a functional prototype, on which the actual performance is evaluated. Aside from the actual new harvester design, the thesis introduces an original way of improving the power output of the inertial energy harvesters and provides statistical data and models for the human energy harvesting usability prediction.
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Energy Harvesting Power Supply for MEMS Applications
Smilek, Jan ; Leuchter, Jan (oponent) ; Ondrůšek, Čestmír (oponent) ; Hadaš, Zdeněk (vedoucí práce)
This thesis deals with the development of an independent power source for modern low-power electronic applications. Since the traditional approach of powering small applications by means of primary or secondary batteries lowers the user comfort of using such a device due to the necessary periodical maintenance, the novel power source is using the energy harvesting approach. This approach means that the energy is scavenged from the ambience of the powered application and converted into electricity in order to satisfy the power requirements of the newest MEMS electrical devices. The target applications for the new energy harvesting device are seen in wearable and biomedical electronic devices. That places challenging requirements on the energy harvester, as it has to harvest sufficient energy from the ambience of human body, while fulfilling practical size and weight constraints. After the preliminary requirements setting and analyses of possible sources of energy a kinetic energy harvesting principle is selected to be employed. A series of measurements is then conducted to obtain and generalize the kinetic energy levels available in the human body during various activities. A novel design of kinetic energy harvester is then introduced and developed into the form of a functional prototype, on which the actual performance is evaluated. Aside from the actual new harvester design, the thesis introduces an original way of improving the power output of the inertial energy harvesters and provides statistical data and models for the human energy harvesting usability prediction.
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