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Design of frequency output pressure ...

Ma, Jinge.

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Design of frequency output pressure transducer.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Design of frequency output pressure transducer./
作者:	Ma, Jinge.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2015,
面頁冊數:	58 p.
附註:	Source: Masters Abstracts International, Volume: 55-04.
Contained By:	Masters Abstracts International55-04(E).
標題:	Information science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10034722
ISBN:	9781339538174

Design of frequency output pressure transducer.
Ma, Jinge.

Design of frequency output pressure transducer. - Ann Arbor : ProQuest Dissertations & Theses, 2015 - 58 p.

Source: Masters Abstracts International, Volume: 55-04.

Thesis (M.S.)--University of North Texas, 2015.

Piezoelectricity crystal is used in different area in industry, such as downhole oil, gas industry, and ballistics. The piezoelectricity crystals are able to create electric fields due to mechanical deformation called the direct piezoelectric effect, or create mechanical deformation due to the effect of electric field called the indirect piezoelectric effect. In this thesis, piezoelectricity effect is the core part. There are 4 parts in the frequency output pressure transducer: two crystal oscillators, phase-locked loop (PLL), mixer, frequency counter. Crystal oscillator is used to activate the piezoelectricity crystal which is made from quartz. The resonance frequency of the piezoelectricity crystal will be increased with the higher pressure applied. The signal of the resonance frequency will be transmitted to the PLL. The function of the PLL is detect the frequency change in the input signal and makes the output of the PLL has the same frequency and same phase with the input signal. The output of the PLL will be transmitted to a Mixer. The mixer has two inputs and one output. One input signal is from the pressure crystal oscillator and another one is from the reference crystal oscillator. The frequency difference of the two signal will transmitted to the frequency counter from the output of the mixer. Thus, the frequency output pressure transducer with a frequency counter is a portable device which is able to measure the pressure without oscilloscope or computer.

ISBN: 9781339538174Subjects--Topical Terms:

554358
Information science.

Design of frequency output pressure transducer.
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