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Vector phase-sensitive measurement amplifier
Rejnuš, Milan ; Vlček, Čestmír (referee) ; Drexler, Petr (advisor)
The master’s thesis describes known methods of signal measurement using principle of synchronous detection. Various methods are presented, their principles are examined and the problems when using them are analyzed. Further, procedures for reduction of adverse effects are described also. Second part of this thesis is focused on the instrument design. The instrument is intended for detection and processing of the output signals in a given optometric system. The proposed device is designed to operate on the principle of synchronous detection method using a vector signal evaluation. Advantages and disadvantages are discussed below.
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Lock-in Amplifier
Pivnička, Martin ; Šír, Michal (referee) ; Beneš, Petr (advisor)
This thesis deals with coherent demodulation by using Lock-in amplifier. The first part of this thesis focuses on theoretical analysis of this issue. The second – practical part describes design, construction and measurement of single–channel and dual–channels analog Lock-in amplifier. Further is described measurement of flow through the Coriolis flow meter by using dual-channels Lock-in amplifier. As further is described design digital Lock-in amplifier by using measuring card. The conclusion summarizes the results of measurement of Lock-in amplifier.
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Lock-in Amplifier
Pivnička, Martin ; Šír, Michal (referee) ; Beneš, Petr (advisor)
This thesis deals with coherent demodulation by using Lock-in amplifier. The first part of this thesis focuses on theoretical analysis of this issue. The second – practical part describes design, construction and measurement of single–channel and dual–channels analog Lock-in amplifier. Further is described measurement of flow through the Coriolis flow meter by using dual-channels Lock-in amplifier. As further is described design digital Lock-in amplifier by using measuring card. The conclusion summarizes the results of measurement of Lock-in amplifier.
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Vector phase-sensitive measurement amplifier
Rejnuš, Milan ; Vlček, Čestmír (referee) ; Drexler, Petr (advisor)
The master’s thesis describes known methods of signal measurement using principle of synchronous detection. Various methods are presented, their principles are examined and the problems when using them are analyzed. Further, procedures for reduction of adverse effects are described also. Second part of this thesis is focused on the instrument design. The instrument is intended for detection and processing of the output signals in a given optometric system. The proposed device is designed to operate on the principle of synchronous detection method using a vector signal evaluation. Advantages and disadvantages are discussed below.
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