High Resolution Time-of-Flight Measurement with Narrow-Band COTS Ultrasonic Transducers

Mondo Saito, Jin Mitsugi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Ultrasonic transducers (a pair of speaker and microphone) are extensively used in distance and wind speed measurements. The measurement of Time-of-Flight (TOF) between an ultrasonic speaker and a microphone dominates the accuracy. This paper presents a method to improve the TOF measurement accuracy using narrow-band commercial off-the-shelf (COTS) ultrasonic transducers. The method features the use of an experimentally captured waveform to correlate the transmitted and received signals and the use of a phase modulated ultrasonic signal. The method is experimentally evaluated to show that the proposal can significantly reduce the TOF measurement error, from 25.5% to 0.3%.

Original languageEnglish
Title of host publication2018 IEEE SENSORS, SENSORS 2018 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Volume2018-October
ISBN (Electronic)9781538647073
DOIs
Publication statusPublished - 2018 Dec 26
Event17th IEEE SENSORS Conference, SENSORS 2018 - New Delhi, India
Duration: 2018 Oct 282018 Oct 31

Other

Other17th IEEE SENSORS Conference, SENSORS 2018
CountryIndia
CityNew Delhi
Period18/10/2818/10/31

Keywords

  • Cross correlation
  • time of flight estimation
  • ultrasonic measurement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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    Saito, M., & Mitsugi, J. (2018). High Resolution Time-of-Flight Measurement with Narrow-Band COTS Ultrasonic Transducers. In 2018 IEEE SENSORS, SENSORS 2018 - Conference Proceedings (Vol. 2018-October). [8589571] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICSENS.2018.8589571