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Air ion measurement
Lazorka, Martin ; Roubal, Zdeněk (referee) ; Špinka, Jiří (advisor)
This thesis focuses on the basic problems of ions and the ionization itself, what influence ions have to the organism. Further it examines compensation of small negative ions in the residential environment. Introduction to measurement of ion concentrations. First measurements with the aspiration capacitor which is now the most commonly used measurement of ion fields. Measurement is focused on the concentration of air ions in the building, VUT FEKT T-10, then the concentration changes depending on the daily cycle, ventilation and concentration before teaching and after teaching.
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Air ionts measurement
Lazorka, Martin ; Buřival, Zdeněk (referee) ; Špinka, Jiří (advisor)
The work is focused on the composition of the atmosphere, the processes that take place in it, especially on the formation of atmospheric ions and the energy that must be supplied to ionize the gas. The work examines the influence of aerosol particles on the concentration of ions and also how air ions influence the human health. Last but not least, there is mentioned a comparison of the possibilities of artificial air ionization for interiors.
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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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Design And Optimization Of Special Low-Level Amplifier For Measurement Of Air Ions
Zdražil, Lukáš
This paper deals with low-current measurement in order of picoamps up to a few dozens of femtoamps. Such low currents measuring is necessary for determination of air ions concentration. Disturbances, which are otherwise negligible for ordinary measurements must be considered. For example, leakage currents and noise generated in measuring device circuit. The choice of a precise operation amplifier with low input bias current is as important as the selection of low noise passive components.
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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.
|
|
|
Air ion measurement
Lazorka, Martin ; Roubal, Zdeněk (referee) ; Špinka, Jiří (advisor)
This thesis focuses on the basic problems of ions and the ionization itself, what influence ions have to the organism. Further it examines compensation of small negative ions in the residential environment. Introduction to measurement of ion concentrations. First measurements with the aspiration capacitor which is now the most commonly used measurement of ion fields. Measurement is focused on the concentration of air ions in the building, VUT FEKT T-10, then the concentration changes depending on the daily cycle, ventilation and concentration before teaching and after teaching.
|
|
|
Air ionts measurement
Lazorka, Martin ; Buřival, Zdeněk (referee) ; Špinka, Jiří (advisor)
The work is focused on the composition of the atmosphere, the processes that take place in it, especially on the formation of atmospheric ions and the energy that must be supplied to ionize the gas. The work examines the influence of aerosol particles on the concentration of ions and also how air ions influence the human health. Last but not least, there is mentioned a comparison of the possibilities of artificial air ionization for interiors.
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