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Materials for photovoltaic neurostimulators based on silicon photodiodes
Kunovský, Ondřej ; Weiter, Martin (referee) ; Glowacki, Eric Daniel (advisor)
Tato práce je zaměřena na možnosti neurostimulátorů s bezdrátovým přenosem energie, konkrétně se zabývá přenosem energie pomocí světla. Běžně používané neurostimulátory zahrnují bateriově napájené implantovatelné pulzní generátory a trpí problémem objemných baterií, které vyžadují invazivnější operace a nutnost periodické výměny. V této práci je zkoumána alternativa přenosu energie s využitím fotovoltaických diod. Monokrystalické křemíkové fotovoltaické diody jsou modifikovány a používány pro přeměnu energie ze světelné na elektrickou. Tyto diody byly rozřezány na různé velikosti aktivních ploch a byly zapojeny do sériových nebo paralelních zapojení. Tyto fotovoltaické články byly spojeny s elektrodami vyrobenými z osmi různých materiálů a se čtyřmi různými velikostmi fotovoltaických diod, aby pokryly širokou škálu možných neurostimulačních aplikací. Dále byl vyroben prototyp fotovoltaického stimulátoru skládající se z flexibilních elektrod a fotovoltaické diody. Tento prototyp byl úspěšně testován na modelech malých zvířat, kterými byli Hirudo verbena a Locusta migratoria. Tato práce charakterizuje řadu kombinací jednotlivých velikostí a materiálů elektrod s fotovoltaickými diodami pro různé intenzity a frekvence světla a vytváří mapu relevantních parametrů, z nichž lze navrhnout prototyp stimulátoru pro konkrétní aplikaci. Tato práce pokládá základ pro další vývoj fotovoltaických neurostimulátorů, které umožní nové experimenty a jednoho dne možná méně invazivní klinická zařízení.
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Converter for wireless temperature sensing
Řežucha, Tomáš ; Horský, Pavel (referee) ; Kolka, Zdeněk (advisor)
Thesis focuses on design, construction and measurement of wireless power transfer module, which will be used as a feed for wireless temperature sensor in subsequent bachelor’s thesis. An analysis of available solutions on the wireless charging market is performed, which describes its capabilities in terms of the maximum transmit power, the scope of applicability and effectiveness. Further is described an electromagnetic resonant coupling between two inductors and the possibilities of optical data transmission.
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Design and implementation of wireless charging for embedded systems
Bednařík, Josef ; Bastl, Michal (referee) ; Krejsa, Jiří (advisor)
This thesis deals with the design and realization of wireless power charging circuit for embedded systems. The research section focuses on the various ways and technologies used in applications of wireless power transfer. The theoretical part also briefly characterizes resonant inductive coupling and critical parameters of the transfer. This is followed by realization of various variants of transfer coils and electromagnetic oscillators. Wireless power charging prototype system is created and used for testing purposes to find optimal configuration of resonator. The hardware unit presented in the final part of the thesis exploits microcontroller and implemented software is extended by foreign object detection algorithm along with method to monitor battery charging state.
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Wireless power transfer by inductive coupling for biomedical applications
Studený, Jakub ; Dřínovský, Jiří (referee) ; Mrnka, Michal (advisor)
The bachelor thesis deals with wireless power transfer implemented using a couple of inductively coupled planar coils. A procedure for designing planar coils using the Wheeler method is described as well as the process of simulating wireless transmission in a 3D electromagnetic field simulator. The conclusion of the thesis is devoted to the implementation of the designed coils with adaptive circuits, measurement of transmission by vector analyzer, investigation into the impact of coil distance, and mutual rotation of the coils and the materials interposed the between coils.
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Design and implementation of wireless charging for embedded systems
Bednařík, Josef ; Bastl, Michal (referee) ; Krejsa, Jiří (advisor)
This thesis deals with the design and realization of wireless power charging circuit for embedded systems. The research section focuses on the various ways and technologies used in applications of wireless power transfer. The theoretical part also briefly characterizes resonant inductive coupling and critical parameters of the transfer. This is followed by realization of various variants of transfer coils and electromagnetic oscillators. Wireless power charging prototype system is created and used for testing purposes to find optimal configuration of resonator. The hardware unit presented in the final part of the thesis exploits microcontroller and implemented software is extended by foreign object detection algorithm along with method to monitor battery charging state.
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Wireless Power Transfer 20 Kw
Tománek, Radek
This contribution deals with the design of wireless power transfer at a distance of 600 mm dimensioned to 20 kW. The transfer is provided by inductive coupling of the resonant circuit with 800mm diameter coils. It contains a description of the design and calculations of individual parts, stating specific values. It also includes description and schematics of control circuits.
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Wireless power transfer by inductive coupling for biomedical applications
Studený, Jakub ; Dřínovský, Jiří (referee) ; Mrnka, Michal (advisor)
The bachelor thesis deals with wireless power transfer implemented using a couple of inductively coupled planar coils. A procedure for designing planar coils using the Wheeler method is described as well as the process of simulating wireless transmission in a 3D electromagnetic field simulator. The conclusion of the thesis is devoted to the implementation of the designed coils with adaptive circuits, measurement of transmission by vector analyzer, investigation into the impact of coil distance, and mutual rotation of the coils and the materials interposed the between coils.
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Converter for wireless temperature sensing
Řežucha, Tomáš ; Horský, Pavel (referee) ; Kolka, Zdeněk (advisor)
Thesis focuses on design, construction and measurement of wireless power transfer module, which will be used as a feed for wireless temperature sensor in subsequent bachelor’s thesis. An analysis of available solutions on the wireless charging market is performed, which describes its capabilities in terms of the maximum transmit power, the scope of applicability and effectiveness. Further is described an electromagnetic resonant coupling between two inductors and the possibilities of optical data transmission.
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Convertor for Wireless Temperature Sensing
Řežucha, T.
This thesis focuses on design of wireless power transfer module, which will be used as a power supply for wireless temperature sensor and/or other sensors. The device is suitable for industrial environment, where it can monitor required parameters of moving parts.
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