Simple single transducer ultrasonic thermometer using electrostatic actuator

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00177016%3A_____%2F19%3AN0000013" target="_blank" >RIV/00177016:_____/19:N0000013 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21230/19:00327000

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0003682X18305759?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0003682X18305759?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apacoust.2019.01.011" target="_blank" >10.1016/j.apacoust.2019.01.011</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Simple single transducer ultrasonic thermometer using electrostatic actuator

Popis výsledku v původním jazyce

This article presents an experimental setup for the ultrasonic temperature measurement with a single acoustic transducer. The ultrasonic thermometer uses the simple impulse-echo method to determine the time of flight of short 75 kHz acoustic bursts travelling through a waveguide from which the velocity of sound and subsequently the temperature (of the environment surrounding the waveguide) is computed. The waveguide consists of 500 mm long stainless steel tube with an inner diameter of 22 mm, connected in series with a tube of the reduced diameter (10 mm, 171 mm long). The difference in cross sections of respective parts allows to determine sound velocity only in the segment of the thermometer which is fully immersed into the measured medium. The whole system is controlled by the NI LabVIEW application which uses the NI PXI system for both generating the signal for the electrostatic actuator and measuring the signal from the receiver part of the circuit. Implementation of the electrostatic actuator allows to use one acoustic transducer without the need of complex supporting electronics or time synchronisation between signals. All the signals representing the initial acoustic pulse and echoes from the waveguide are present in a single channel record. The temperature estimation is computed from basic signal parameters. The principle of the thermometer prototype operation and first calibration results in the temperature range of (−20 to 90) °C are shown. Results of calibration and subsequent interpolation applied on measured data show current limits of the thermometer.

Název v anglickém jazyce

Simple single transducer ultrasonic thermometer using electrostatic actuator

Popis výsledku anglicky

This article presents an experimental setup for the ultrasonic temperature measurement with a single acoustic transducer. The ultrasonic thermometer uses the simple impulse-echo method to determine the time of flight of short 75 kHz acoustic bursts travelling through a waveguide from which the velocity of sound and subsequently the temperature (of the environment surrounding the waveguide) is computed. The waveguide consists of 500 mm long stainless steel tube with an inner diameter of 22 mm, connected in series with a tube of the reduced diameter (10 mm, 171 mm long). The difference in cross sections of respective parts allows to determine sound velocity only in the segment of the thermometer which is fully immersed into the measured medium. The whole system is controlled by the NI LabVIEW application which uses the NI PXI system for both generating the signal for the electrostatic actuator and measuring the signal from the receiver part of the circuit. Implementation of the electrostatic actuator allows to use one acoustic transducer without the need of complex supporting electronics or time synchronisation between signals. All the signals representing the initial acoustic pulse and echoes from the waveguide are present in a single channel record. The temperature estimation is computed from basic signal parameters. The principle of the thermometer prototype operation and first calibration results in the temperature range of (−20 to 90) °C are shown. Results of calibration and subsequent interpolation applied on measured data show current limits of the thermometer.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20205 - Automation and control systems

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied Acoustics

ISSN

0003-682X

e-ISSN

1872-910X

Svazek periodika

2020

Číslo periodika v rámci svazku

148

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

448-456

Kód UT WoS článku

000460842800045

EID výsledku v databázi Scopus

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