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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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Test Bench for Experimental Analysis of Conductive Composite Materials for Aerospace Applications.
Pham, N. N. ; Leuchter, J. ; Václavík, J.
The paper presents the materials used in aerospace industry and introduces an automated test bench for investigating these materials’ electrical properties. The test bench is also designed to investigate aviation electronic components, especially regarding electromagnetic compatibility (EMC). The test bench contains various measuring instruments which are connected to a computer (workstation). The designed program on the computer supervises identifying connected instruments and creating communication channels to those instruments. This program also controls those instruments to conduct required measurement or testing and obtain the measuring results. Instrument control is realized by using Standard Command for Programable Instrument (SCPI) commands. The program is designed in MATLAB development environment and add-on application MATLAB App Designer with toolboxes Instrument Control Toolbox and Signal Processing Toolbox.
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Wireless Battery Management System for Military Unmanned Vehicles
Pham, N. N. ; Leuchter, J. ; Dong, H. Q.
This paper introduces a Battery Management System (BMS) for Military Unmanned Vehicles, which uses multi-cell battery packs. The designed BMS is composed of slave modules and a master module. Each slave module is in charge of managing the state of one battery, include flowing current, voltage of battery, voltage of each cell, temperature of battery. From these obtained data, each module can predict the State of Charge (SoC) of connected battery. All slave modules are interconnected to the master module via Wireless Communication Protocol such as Wi-Fi, Bluetooth, or ESP-NOW. The master module will save all the received data to a microSD card, and if required, send these data to a workstation. These data are useful to predict the operation range of the vehicle, which is very important for decision the tactic of using. The designed BMS was verified in various applications in University of Defence in Brno.
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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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