Simple single transducer ultrasonic thermometer using electrostatic actuator

Result code in 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>

Alternative codes found

RIV/68407700:21230/19:00327000

Result on the web

<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>

Result language

angličtina

Original language name

Simple single transducer ultrasonic thermometer using electrostatic actuator

Original language description

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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20205 - Automation and control systems

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Applied Acoustics

ISSN

0003-682X

e-ISSN

1872-910X

Volume of the periodical

2020

Issue of the periodical within the volume

148

Country of publishing house

GB - UNITED KINGDOM

Number of pages

9

Pages from-to

448-456

UT code for WoS article

000460842800045

EID of the result in the Scopus database

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