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Laboratory Measurements of Skin Conductance
Slouka, Petr ; Harabiš, Vratislav (referee) ; Sekora, Jiří (advisor)
This thesis contains an introduction to anatomy and physiology of the skin highlighting its barrier function. The barrier function of the skin enables it to separate internal organism from external environment. thermore, the electrical properties of the skin are described and possibilities of skin conductance measurement are discussed. The thesis presents a design of a device for the skin conductance measurement as the method of evaluation for barrier function. Alternating current is used for measurement during iontophoresis for evaluation of skin conductance. Circuit design and circuit board are included with a list of parts. The designed device was realized and in the end it was tested and the results were discussed.
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EOG signal processing using Arduino
Typovský, Viktor ; Králík, Martin (referee) ; Harabiš, Vratislav (advisor)
This bachelors thesis deals with scanning and processing EOG signal. Processing means displaying EOG signal detection and eye movement. The theoretical part is first described the formation and properties of EOG signal. Furthermore, they describe factors affecting EOG. The practical part is then given proposal hardware solutions to capture this signal and processing algorithm. Scanning EOG signal is realized by means of the instrumentation amplifier. Its filtration is used lowpass Sallen-Key. It was decided to maintain during scanning DC component of the signal. But that was a problem regarding the electrode potential. This problem would be resolved by the proposed compensation circuit. Processing the resultant signal is then performed in an environment Processing using Arduino platform. EOG imaging algorithm and motion detection functions and is given.
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The low level measurement for determination air ion concentration
Šot, Jan ; Steinbauer, Miloslav (referee) ; Roubal, Zdeněk (advisor)
This work deals with the possibilities of small current amplification to measure the concentration of air ions using the Aspiration condenser method. The work analyzes the connection containing precision operational amplifiers and the air ions measurement method. Two amplifiers, namely an instrumentation amplifier containing an integrated circuit INA116 recording the voltage drop on shunt and a current to voltage converter, have been designed and created to measure ion concentrations. The results of measurement show that using the instrumentation amplifier means lower measurement uncertainties of type A measurement than when using the current to voltage converter.
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EOG signal processing using Arduino
Typovský, Viktor ; Králík, Martin (referee) ; Harabiš, Vratislav (advisor)
This bachelors thesis deals with scanning and processing EOG signal. Processing means displaying EOG signal detection and eye movement. The theoretical part is first described the formation and properties of EOG signal. Furthermore, they describe factors affecting EOG. The practical part is then given proposal hardware solutions to capture this signal and processing algorithm. Scanning EOG signal is realized by means of the instrumentation amplifier. Its filtration is used lowpass Sallen-Key. It was decided to maintain during scanning DC component of the signal. But that was a problem regarding the electrode potential. This problem would be resolved by the proposed compensation circuit. Processing the resultant signal is then performed in an environment Processing using Arduino platform. EOG imaging algorithm and motion detection functions and is given.
|
|
|
The low level measurement for determination air ion concentration
Šot, Jan ; Steinbauer, Miloslav (referee) ; Roubal, Zdeněk (advisor)
This work deals with the possibilities of small current amplification to measure the concentration of air ions using the Aspiration condenser method. The work analyzes the connection containing precision operational amplifiers and the air ions measurement method. Two amplifiers, namely an instrumentation amplifier containing an integrated circuit INA116 recording the voltage drop on shunt and a current to voltage converter, have been designed and created to measure ion concentrations. The results of measurement show that using the instrumentation amplifier means lower measurement uncertainties of type A measurement than when using the current to voltage converter.
|
|
|
Laboratory Measurements of Skin Conductance
Slouka, Petr ; Harabiš, Vratislav (referee) ; Sekora, Jiří (advisor)
This thesis contains an introduction to anatomy and physiology of the skin highlighting its barrier function. The barrier function of the skin enables it to separate internal organism from external environment. thermore, the electrical properties of the skin are described and possibilities of skin conductance measurement are discussed. The thesis presents a design of a device for the skin conductance measurement as the method of evaluation for barrier function. Alternating current is used for measurement during iontophoresis for evaluation of skin conductance. Circuit design and circuit board are included with a list of parts. The designed device was realized and in the end it was tested and the results were discussed.
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