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Multi-body system of structures with electro-mechanical resonators
Tichý, Jiří ; Lošák, Petr (referee) ; Hadaš, Zdeněk (advisor)
This thesis is dealing with creation of computation model of energy harvestors. Harvestors based on translational motion and planar motion were modeled. These models were created in MSC Adams. Proposed harvestors are tranforming mechanical vibrations into electrical energy by electromagnetical induction. To achieve better electrical output, harvestors were tuned to natural frequency suitable for chosen aplication. First proposed harvestor is meant for railway track. For validation of its usability in intended application, model of railway track section is also proposed. Force generated by passing train is used for excitation of the track model. Second harvestor is nonlinear electromechanical oscilator proposed for use on unanchored sea buoy (drifter). After retuning previously proposed concept of energy harvestor to natural frequency 1.6 Hz, computation model for simulation purposes was created. After the simulation of sinusoidal excitation, the excitation based on real sea data was simulated. When excited by regular sea, the peak electric power 9 W was achieved. When excited by irregular sea the peak electrical power of the generator was 7.5 mW.
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Low-power sensor networks
Frank, Jan ; Šimek, Milan (referee) ; Hynčica, Ondřej (advisor)
This work deals with measuring and optimization of power consumption of nodes in sensor network. It suggests and compares different methods of power saving for sensor network nodes, defines mathematical model of power consumption of node and implements it into Matlab. This work also includes a measure of power consumption of module Zigbit MNZB-900-B0. This module communicates in IEEE 802.15.4 standard. Measurement is used to verify accuracy of mathematical model. This work also presents basics of energy harvesting and development of system, which is using this method.
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Measurement Of Energy Harvesters
Kašpárek, Ondřej
This paper deals with energy harvesting based on piezoelectric principle and options of determining power parameters of piezoelectric energy harvesters. Purpose of the work is to depict one of possible methods in determining these parameters. Subsequently a system for measuring the generated voltage from piezoelectric energy harvesters under harmonic force signal in circuit with external load and a program for evaluating the measured data are put into operation.
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Multi-body system of structures with electro-mechanical resonators
Tichý, Jiří ; Lošák, Petr (referee) ; Hadaš, Zdeněk (advisor)
This thesis is dealing with creation of computation model of energy harvestors. Harvestors based on translational motion and planar motion were modeled. These models were created in MSC Adams. Proposed harvestors are tranforming mechanical vibrations into electrical energy by electromagnetical induction. To achieve better electrical output, harvestors were tuned to natural frequency suitable for chosen aplication. First proposed harvestor is meant for railway track. For validation of its usability in intended application, model of railway track section is also proposed. Force generated by passing train is used for excitation of the track model. Second harvestor is nonlinear electromechanical oscilator proposed for use on unanchored sea buoy (drifter). After retuning previously proposed concept of energy harvestor to natural frequency 1.6 Hz, computation model for simulation purposes was created. After the simulation of sinusoidal excitation, the excitation based on real sea data was simulated. When excited by regular sea, the peak electric power 9 W was achieved. When excited by irregular sea the peak electrical power of the generator was 7.5 mW.
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|
|
Low-power sensor networks
Frank, Jan ; Šimek, Milan (referee) ; Hynčica, Ondřej (advisor)
This work deals with measuring and optimization of power consumption of nodes in sensor network. It suggests and compares different methods of power saving for sensor network nodes, defines mathematical model of power consumption of node and implements it into Matlab. This work also includes a measure of power consumption of module Zigbit MNZB-900-B0. This module communicates in IEEE 802.15.4 standard. Measurement is used to verify accuracy of mathematical model. This work also presents basics of energy harvesting and development of system, which is using this method.
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