Phase-Coded Modulation Based Time-of-Flight Measurement Improvement for Piezoelectric Ceramic Transducers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F20%3A00556657" target="_blank" >RIV/60162694:G43__/20:00556657 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/abstract/document/9216080" target="_blank" >https://ieeexplore.ieee.org/abstract/document/9216080</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TUFFC.2020.3029329" target="_blank" >10.1109/TUFFC.2020.3029329</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Phase-Coded Modulation Based Time-of-Flight Measurement Improvement for Piezoelectric Ceramic Transducers

Popis výsledku v původním jazyce

Ultrasonic Time of Flight (ToF) measurement is commonly used in a variety of scenarios when using small bandwidth ultrasonic transducers with 40 kHz central frequency. With these transducers, threshold detection technique is commonly implemented, but the small bandwidth can cause inaccurate results. This article proposes a variant of correlation method for the improvement of the ToF measurement accuracy and stability with these transducers. Barker 13 and derived codes are proposed for this purpose, together with the selected code band narrowing techniques. The performance of these codes was evaluated experimentally, where 1000 measurements of each code and modulation schemes took place in a several fixed transmitter–receiver settings. As the main criterion for comparison of the performance of the codes and the threshold detection technique, a sample standard deviation (SSD) was selected, showing the stability of the measured results. The best results were produced by Quadriphase codes and codes with implemented fluent phase change technique, where the measured SSD was smaller than 20% of the SSD of the threshold detection techniques with all the used codes, and was also smaller than 10% for the best recorded cases.

Název v anglickém jazyce

Phase-Coded Modulation Based Time-of-Flight Measurement Improvement for Piezoelectric Ceramic Transducers

Popis výsledku anglicky

Ultrasonic Time of Flight (ToF) measurement is commonly used in a variety of scenarios when using small bandwidth ultrasonic transducers with 40 kHz central frequency. With these transducers, threshold detection technique is commonly implemented, but the small bandwidth can cause inaccurate results. This article proposes a variant of correlation method for the improvement of the ToF measurement accuracy and stability with these transducers. Barker 13 and derived codes are proposed for this purpose, together with the selected code band narrowing techniques. The performance of these codes was evaluated experimentally, where 1000 measurements of each code and modulation schemes took place in a several fixed transmitter–receiver settings. As the main criterion for comparison of the performance of the codes and the threshold detection technique, a sample standard deviation (SSD) was selected, showing the stability of the measured results. The best results were produced by Quadriphase codes and codes with implemented fluent phase change technique, where the measured SSD was smaller than 20% of the SSD of the threshold detection techniques with all the used codes, and was also smaller than 10% for the best recorded cases.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

ISSN

0885-3010

e-ISSN

1525-8955

Svazek periodika

68

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

1362-1369

Kód UT WoS článku

000634502600038

EID výsledku v databázi Scopus

2-s2.0-85103380446